1 | /* img.c |
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2 | * Routines for reading and writing Survex ".3d" image files |
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3 | * Copyright (C) 1993-2004,2005,2006,2010,2011,2013,2014,2017,2018 Olly Betts |
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4 | * |
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5 | * This program is free software; you can redistribute it and/or modify |
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6 | * it under the terms of the GNU General Public License as published by |
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7 | * the Free Software Foundation; either version 2 of the License, or |
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8 | * (at your option) any later version. |
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9 | * |
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10 | * This program is distributed in the hope that it will be useful, |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | * GNU General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU General Public License |
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16 | * along with this program; if not, write to the Free Software |
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17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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18 | */ |
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19 | |
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20 | #ifdef HAVE_CONFIG_H |
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21 | # include <config.h> |
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22 | #endif |
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23 | |
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24 | #include <ctype.h> |
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25 | #include <errno.h> |
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26 | #include <limits.h> |
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27 | #include <locale.h> |
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28 | #include <stdio.h> |
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29 | #include <stdlib.h> |
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30 | #include <string.h> |
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31 | #include <time.h> |
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32 | |
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33 | #include "img.h" |
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34 | |
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35 | #define TIMENA "?" |
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36 | #ifdef IMG_HOSTED |
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37 | # define INT32_T int32_t |
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38 | # include "debug.h" |
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39 | # include "filelist.h" |
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40 | # include "filename.h" |
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41 | # include "message.h" |
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42 | # include "useful.h" |
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43 | # define TIMEFMT msg(/*%a,%Y.%m.%d %H:%M:%S %Z*/107) |
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44 | #else |
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45 | # ifdef HAVE_STDINT_H |
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46 | # include <stdint.h> |
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47 | # define INT32_T int32_t |
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48 | # else |
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49 | # include <limits.h> |
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50 | # if INT_MAX >= 2147483647 |
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51 | # define INT32_T int |
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52 | # else |
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53 | # define INT32_T long |
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54 | # endif |
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55 | # endif |
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56 | # define TIMEFMT "%a,%Y.%m.%d %H:%M:%S %Z" |
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57 | # define EXT_SVX_3D "3d" |
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58 | # define EXT_SVX_POS "pos" |
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59 | # define FNM_SEP_EXT '.' |
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60 | # define METRES_PER_FOOT 0.3048 /* exact value */ |
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61 | # define xosmalloc(L) malloc((L)) |
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62 | # define xosrealloc(L,S) realloc((L),(S)) |
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63 | # define osfree(P) free((P)) |
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64 | # define osnew(T) (T*)malloc(sizeof(T)) |
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65 | |
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66 | /* in IMG_HOSTED mode, this tests if a filename refers to a directory */ |
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67 | # define fDirectory(X) 0 |
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68 | /* open file FNM with mode MODE, maybe using path PTH and/or extension EXT */ |
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69 | /* path isn't used in img.c, but EXT is */ |
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70 | # define fopenWithPthAndExt(PTH,FNM,EXT,MODE,X) \ |
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71 | ((*(X) = NULL), fopen(FNM,MODE)) |
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72 | # ifndef PUTC |
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73 | # define PUTC(C, FH) putc(C, FH) |
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74 | # endif |
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75 | # ifndef GETC |
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76 | # define GETC(FH) getc(FH) |
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77 | # endif |
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78 | # define fputsnl(S, FH) (fputs((S), (FH)) == EOF ? EOF : putc('\n', (FH))) |
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79 | # define SVX_ASSERT(X) |
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80 | |
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81 | #ifdef __cplusplus |
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82 | # include <algorithm> |
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83 | using std::max; |
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84 | using std::min; |
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85 | #else |
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86 | /* Return max/min of two numbers. */ |
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87 | /* May be defined already (e.g. by Borland C in stdlib.h) */ |
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88 | /* NB Bad news if X or Y has side-effects... */ |
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89 | # ifndef max |
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90 | # define max(X, Y) ((X) > (Y) ? (X) : (Y)) |
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91 | # endif |
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92 | # ifndef min |
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93 | # define min(X, Y) ((X) < (Y) ? (X) : (Y)) |
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94 | # endif |
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95 | #endif |
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96 | |
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97 | static INT32_T |
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98 | get32(FILE *fh) |
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99 | { |
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100 | INT32_T w = GETC(fh); |
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101 | w |= (INT32_T)GETC(fh) << 8l; |
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102 | w |= (INT32_T)GETC(fh) << 16l; |
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103 | w |= (INT32_T)GETC(fh) << 24l; |
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104 | return w; |
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105 | } |
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106 | |
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107 | static void |
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108 | put32(long w, FILE *fh) |
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109 | { |
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110 | PUTC((char)(w), fh); |
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111 | PUTC((char)(w >> 8l), fh); |
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112 | PUTC((char)(w >> 16l), fh); |
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113 | PUTC((char)(w >> 24l), fh); |
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114 | } |
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115 | |
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116 | static short |
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117 | get16(FILE *fh) |
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118 | { |
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119 | short w = GETC(fh); |
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120 | w |= (short)GETC(fh) << 8l; |
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121 | return w; |
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122 | } |
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123 | |
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124 | static void |
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125 | put16(short w, FILE *fh) |
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126 | { |
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127 | PUTC((char)(w), fh); |
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128 | PUTC((char)(w >> 8l), fh); |
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129 | } |
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130 | |
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131 | static char * |
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132 | baseleaf_from_fnm(const char *fnm) |
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133 | { |
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134 | const char *p; |
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135 | const char *q; |
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136 | char * res; |
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137 | size_t len; |
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138 | |
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139 | p = fnm; |
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140 | q = strrchr(p, '/'); |
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141 | if (q) p = q + 1; |
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142 | q = strrchr(p, '\\'); |
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143 | if (q) p = q + 1; |
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144 | |
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145 | q = strrchr(p, FNM_SEP_EXT); |
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146 | if (q) len = (const char *)q - p; else len = strlen(p); |
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147 | |
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148 | res = (char *)xosmalloc(len + 1); |
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149 | if (!res) return NULL; |
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150 | memcpy(res, p, len); |
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151 | res[len] = '\0'; |
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152 | return res; |
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153 | } |
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154 | #endif |
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155 | |
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156 | static char * my_strdup(const char *str); |
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157 | |
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158 | static time_t |
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159 | mktime_with_tz(struct tm * tm, const char * tz) |
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160 | { |
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161 | time_t r; |
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162 | char * old_tz = getenv("TZ"); |
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163 | #ifdef _MSC_VER |
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164 | if (old_tz) { |
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165 | old_tz = my_strdup(old_tz); |
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166 | if (!old_tz) |
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167 | return (time_t)-1; |
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168 | } |
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169 | if (_putenv_s("TZ", tz) != 0) { |
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170 | osfree(old_tz); |
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171 | return (time_t)-1; |
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172 | } |
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173 | #elif defined HAVE_SETENV |
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174 | if (old_tz) { |
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175 | old_tz = my_strdup(old_tz); |
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176 | if (!old_tz) |
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177 | return (time_t)-1; |
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178 | } |
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179 | if (setenv("TZ", tz, 1) < 0) { |
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180 | osfree(old_tz); |
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181 | return (time_t)-1; |
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182 | } |
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183 | #else |
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184 | char * p; |
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185 | if (old_tz) { |
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186 | size_t len = strlen(old_tz) + 1; |
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187 | p = (char *)xosmalloc(len + 3); |
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188 | if (!p) |
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189 | return (time_t)-1; |
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190 | memcpy(p, "TZ=", 3); |
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191 | memcpy(p + 3, tz, len); |
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192 | old_tz = p; |
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193 | } |
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194 | p = (char *)xosmalloc(strlen(tz) + 4); |
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195 | if (!p) { |
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196 | osfree(old_tz); |
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197 | return (time_t)-1; |
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198 | } |
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199 | memcpy(p, "TZ=", 3); |
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200 | strcpy(p + 3, tz); |
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201 | if (putenv(p) != 0) { |
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202 | osfree(p); |
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203 | osfree(old_tz); |
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204 | return (time_t)-1; |
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205 | } |
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206 | #define CLEANUP() osfree(p) |
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207 | #endif |
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208 | tzset(); |
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209 | r = mktime(tm); |
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210 | if (old_tz) { |
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211 | #ifdef _MSC_VER |
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212 | _putenv_s("TZ", old_tz); |
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213 | #elif !defined HAVE_SETENV |
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214 | putenv(old_tz); |
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215 | #else |
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216 | setenv("TZ", old_tz, 1); |
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217 | #endif |
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218 | osfree(old_tz); |
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219 | } else { |
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220 | #ifdef _MSC_VER |
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221 | _putenv_s("TZ", ""); |
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222 | #elif !defined HAVE_UNSETENV |
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223 | putenv((char*)"TZ"); |
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224 | #else |
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225 | unsetenv("TZ"); |
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226 | #endif |
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227 | } |
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228 | #ifdef CLEANUP |
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229 | CLEANUP(); |
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230 | #undef CLEANUP |
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231 | #endif |
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232 | return r; |
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233 | } |
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234 | |
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235 | static unsigned short |
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236 | getu16(FILE *fh) |
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237 | { |
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238 | return (unsigned short)get16(fh); |
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239 | } |
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240 | |
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241 | #include <math.h> |
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242 | |
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243 | #if !defined HAVE_LROUND && !defined HAVE_DECL_LROUND |
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244 | /* The autoconf tests are not in use, but C99 and C++11 both added lround(), |
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245 | * so set HAVE_LROUND and HAVE_DECL_LROUND conservatively based on the language |
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246 | * standard version the compiler claims to support. */ |
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247 | # if (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L) || \ |
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248 | (defined __cplusplus && __cplusplus >= 201103L) |
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249 | # define HAVE_LROUND 1 |
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250 | # define HAVE_DECL_LROUND 1 |
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251 | # endif |
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252 | #endif |
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253 | |
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254 | #ifdef HAVE_LROUND |
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255 | # if defined HAVE_DECL_LROUND && !HAVE_DECL_LROUND |
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256 | /* On older systems, the prototype may be missing. */ |
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257 | extern long lround(double); |
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258 | # endif |
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259 | # define my_lround lround |
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260 | #else |
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261 | static long |
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262 | my_lround(double x) { |
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263 | return (x >= 0.0) ? (long)(x + 0.5) : -(long)(0.5 - x); |
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264 | } |
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265 | #endif |
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266 | |
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267 | /* portable case insensitive string compare */ |
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268 | #if defined(strcasecmp) || defined(HAVE_STRCASECMP) |
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269 | # define my_strcasecmp strcasecmp |
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270 | #else |
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271 | static int my_strcasecmp(const char *s1, const char *s2) { |
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272 | unsigned char c1, c2; |
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273 | do { |
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274 | c1 = *s1++; |
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275 | c2 = *s2++; |
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276 | } while (c1 && toupper(c1) == toupper(c2)); |
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277 | /* now calculate real difference */ |
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278 | return c1 - c2; |
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279 | } |
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280 | #endif |
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281 | |
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282 | unsigned int img_output_version = IMG_VERSION_MAX; |
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283 | |
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284 | static img_errcode img_errno = IMG_NONE; |
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285 | |
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286 | #define FILEID "Survex 3D Image File" |
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287 | |
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288 | #define EXT_PLT "plt" |
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289 | #define EXT_PLF "plf" |
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290 | |
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291 | /* Attempt to string paste to ensure we are passed a literal string */ |
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292 | #define LITLEN(S) (sizeof(S"") - 1) |
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293 | |
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294 | /* Fake "version numbers" for non-3d formats we can read. */ |
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295 | #define VERSION_CMAP_SHOT -4 |
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296 | #define VERSION_CMAP_STATION -3 |
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297 | #define VERSION_COMPASS_PLT -2 |
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298 | #define VERSION_SURVEX_POS -1 |
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299 | |
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300 | static char * |
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301 | my_strdup(const char *str) |
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302 | { |
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303 | char *p; |
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304 | size_t len = strlen(str) + 1; |
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305 | p = (char *)xosmalloc(len); |
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306 | if (p) memcpy(p, str, len); |
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307 | return p; |
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308 | } |
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309 | |
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310 | #define getline_alloc(FH) getline_alloc_len(FH, NULL) |
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311 | |
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312 | static char * |
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313 | getline_alloc_len(FILE *fh, size_t * p_len) |
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314 | { |
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315 | int ch; |
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316 | size_t i = 0; |
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317 | size_t len = 16; |
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318 | char *buf = (char *)xosmalloc(len); |
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319 | if (!buf) return NULL; |
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320 | |
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321 | ch = GETC(fh); |
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322 | while (ch != '\n' && ch != '\r' && ch != EOF) { |
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323 | buf[i++] = ch; |
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324 | if (i == len - 1) { |
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325 | char *p; |
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326 | len += len; |
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327 | p = (char *)xosrealloc(buf, len); |
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328 | if (!p) { |
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329 | osfree(buf); |
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330 | return NULL; |
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331 | } |
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332 | buf = p; |
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333 | } |
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334 | ch = GETC(fh); |
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335 | } |
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336 | if (ch == '\n' || ch == '\r') { |
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337 | int otherone = ch ^ ('\n' ^ '\r'); |
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338 | ch = GETC(fh); |
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339 | /* if it's not the other eol character, put it back */ |
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340 | if (ch != otherone) ungetc(ch, fh); |
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341 | } |
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342 | buf[i] = '\0'; |
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343 | if (p_len) *p_len = i; |
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344 | return buf; |
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345 | } |
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346 | |
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347 | img_errcode |
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348 | img_error(void) |
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349 | { |
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350 | return img_errno; |
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351 | } |
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352 | |
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353 | static int |
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354 | check_label_space(img *pimg, size_t len) |
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355 | { |
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356 | if (len > pimg->buf_len) { |
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357 | char *b = (char *)xosrealloc(pimg->label_buf, len); |
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358 | if (!b) return 0; |
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359 | pimg->label = (pimg->label - pimg->label_buf) + b; |
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360 | pimg->label_buf = b; |
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361 | pimg->buf_len = len; |
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362 | } |
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363 | return 1; |
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364 | } |
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365 | |
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366 | /* Check if a station name should be included. */ |
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367 | static int |
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368 | stn_included(img *pimg) |
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369 | { |
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370 | if (!pimg->survey_len) return 1; |
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371 | size_t l = pimg->survey_len; |
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372 | const char *s = pimg->label_buf; |
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373 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
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374 | return 0; |
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375 | } |
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376 | pimg->label += l + 1; |
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377 | return 1; |
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378 | } |
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379 | |
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380 | /* Check if a survey name should be included. */ |
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381 | static int |
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382 | survey_included(img *pimg) |
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383 | { |
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384 | if (!pimg->survey_len) return 1; |
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385 | size_t l = pimg->survey_len; |
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386 | const char *s = pimg->label_buf; |
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387 | if (strncmp(pimg->survey, s, l) != 0 || |
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388 | !(s[l] == '.' || s[l] == '\0')) { |
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389 | return 0; |
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390 | } |
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391 | pimg->label += l; |
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392 | /* skip the dot if there */ |
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393 | if (*pimg->label) pimg->label++; |
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394 | return 1; |
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395 | } |
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396 | |
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397 | /* Check if a survey name in a buffer should be included. |
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398 | * |
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399 | * For "foreign" formats which just have one level of surveys. |
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400 | */ |
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401 | static int |
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402 | buf_included(img *pimg, const char *buf, size_t len) |
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403 | { |
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404 | return pimg->survey_len == len && strncmp(buf, pimg->survey, len) == 0; |
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405 | } |
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406 | |
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407 | #define has_ext(F,L,E) ((L) > LITLEN(E) + 1 &&\ |
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408 | (F)[(L) - LITLEN(E) - 1] == FNM_SEP_EXT &&\ |
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409 | my_strcasecmp((F) + (L) - LITLEN(E), E) == 0) |
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410 | |
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411 | img * |
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412 | img_open_survey(const char *fnm, const char *survey) |
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413 | { |
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414 | img *pimg; |
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415 | FILE *fh; |
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416 | char* filename_opened = NULL; |
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417 | |
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418 | if (fDirectory(fnm)) { |
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419 | img_errno = IMG_DIRECTORY; |
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420 | return NULL; |
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421 | } |
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422 | |
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423 | fh = fopenWithPthAndExt("", fnm, EXT_SVX_3D, "rb", &filename_opened); |
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424 | pimg = img_read_stream_survey(fh, fclose, filename_opened, survey); |
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425 | if (pimg) { |
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426 | pimg->filename_opened = filename_opened; |
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427 | } else { |
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428 | osfree(filename_opened); |
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429 | } |
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430 | return pimg; |
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431 | } |
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432 | |
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433 | img * |
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434 | img_read_stream_survey(FILE *stream, int (*close_func)(FILE*), |
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435 | const char *fnm, |
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436 | const char *survey) |
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437 | { |
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438 | img *pimg; |
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439 | size_t len; |
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440 | char buf[LITLEN(FILEID) + 9]; |
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441 | int ch; |
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442 | |
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443 | if (stream == NULL) { |
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444 | img_errno = IMG_FILENOTFOUND; |
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445 | return NULL; |
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446 | } |
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447 | |
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448 | pimg = osnew(img); |
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449 | if (pimg == NULL) { |
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450 | img_errno = IMG_OUTOFMEMORY; |
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451 | if (close_func) close_func(stream); |
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452 | return NULL; |
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453 | } |
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454 | |
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455 | pimg->fh = stream; |
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456 | pimg->close_func = close_func; |
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457 | |
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458 | pimg->buf_len = 257; |
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459 | pimg->label_buf = (char *)xosmalloc(pimg->buf_len); |
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460 | if (!pimg->label_buf) { |
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461 | if (pimg->close_func) pimg->close_func(pimg->fh); |
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462 | osfree(pimg); |
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463 | img_errno = IMG_OUTOFMEMORY; |
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464 | return NULL; |
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465 | } |
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466 | |
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467 | pimg->fRead = 1; /* reading from this file */ |
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468 | img_errno = IMG_NONE; |
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469 | |
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470 | pimg->flags = 0; |
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471 | pimg->filename_opened = NULL; |
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472 | |
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473 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
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474 | /* for VERSION_COMPASS_PLT, 0 value indicates we haven't |
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475 | * entered a survey yet */ |
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476 | /* for VERSION_CMAP_SHOT, we store the last station here |
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477 | * to detect whether we MOVE or LINE */ |
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478 | pimg->label_len = 0; |
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479 | pimg->label_buf[0] = '\0'; |
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480 | |
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481 | pimg->survey = NULL; |
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482 | pimg->survey_len = 0; |
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483 | pimg->separator = '.'; |
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484 | #if IMG_API_VERSION == 0 |
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485 | pimg->date1 = pimg->date2 = 0; |
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486 | #else /* IMG_API_VERSION == 1 */ |
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487 | pimg->days1 = pimg->days2 = -1; |
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488 | #endif |
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489 | pimg->is_extended_elevation = 0; |
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490 | |
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491 | pimg->style = pimg->oldstyle = img_STYLE_UNKNOWN; |
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492 | |
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493 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
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494 | |
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495 | pimg->title = pimg->datestamp = pimg->cs = NULL; |
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496 | pimg->datestamp_numeric = (time_t)-1; |
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497 | |
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498 | if (survey) { |
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499 | len = strlen(survey); |
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500 | if (len) { |
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501 | if (survey[len - 1] == '.') len--; |
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502 | if (len) { |
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503 | char *p; |
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504 | pimg->survey = (char *)xosmalloc(len + 2); |
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505 | if (!pimg->survey) { |
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506 | img_errno = IMG_OUTOFMEMORY; |
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507 | goto error; |
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508 | } |
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509 | memcpy(pimg->survey, survey, len); |
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510 | /* Set title to leaf survey name */ |
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511 | pimg->survey[len] = '\0'; |
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512 | p = strrchr(pimg->survey, '.'); |
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513 | if (p) p++; else p = pimg->survey; |
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514 | pimg->title = my_strdup(p); |
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515 | if (!pimg->title) { |
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516 | img_errno = IMG_OUTOFMEMORY; |
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517 | goto error; |
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518 | } |
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519 | pimg->survey[len] = '.'; |
---|
520 | pimg->survey[len + 1] = '\0'; |
---|
521 | } |
---|
522 | } |
---|
523 | pimg->survey_len = len; |
---|
524 | } |
---|
525 | |
---|
526 | /* [VERSION_COMPASS_PLT, VERSION_CMAP_STATION, VERSION_CMAP_SHOT] pending |
---|
527 | * IMG_LINE or IMG_MOVE - both have 4 added. |
---|
528 | * [VERSION_SURVEX_POS] already skipped heading line, or there wasn't one |
---|
529 | * [version 0] not in the middle of a 'LINE' command |
---|
530 | * [version >= 3] not in the middle of turning a LINE into a MOVE |
---|
531 | */ |
---|
532 | pimg->pending = 0; |
---|
533 | |
---|
534 | len = strlen(fnm); |
---|
535 | if (has_ext(fnm, len, EXT_SVX_POS)) { |
---|
536 | pos_file: |
---|
537 | pimg->version = VERSION_SURVEX_POS; |
---|
538 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
---|
539 | pimg->datestamp = my_strdup(TIMENA); |
---|
540 | if (!pimg->datestamp) { |
---|
541 | img_errno = IMG_OUTOFMEMORY; |
---|
542 | goto error; |
---|
543 | } |
---|
544 | pimg->start = 0; |
---|
545 | return pimg; |
---|
546 | } |
---|
547 | |
---|
548 | if (has_ext(fnm, len, EXT_PLT) || has_ext(fnm, len, EXT_PLF)) { |
---|
549 | long fpos; |
---|
550 | plt_file: |
---|
551 | pimg->version = VERSION_COMPASS_PLT; |
---|
552 | /* Spaces aren't legal in Compass station names, but dots are, so |
---|
553 | * use space as the level separator */ |
---|
554 | pimg->separator = ' '; |
---|
555 | pimg->start = 0; |
---|
556 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
---|
557 | pimg->datestamp = my_strdup(TIMENA); |
---|
558 | if (!pimg->datestamp) { |
---|
559 | img_errno = IMG_OUTOFMEMORY; |
---|
560 | goto error; |
---|
561 | } |
---|
562 | while (1) { |
---|
563 | ch = GETC(pimg->fh); |
---|
564 | switch (ch) { |
---|
565 | case '\x1a': |
---|
566 | fseek(pimg->fh, -1, SEEK_CUR); |
---|
567 | /* FALL THRU */ |
---|
568 | case EOF: |
---|
569 | pimg->start = ftell(pimg->fh); |
---|
570 | return pimg; |
---|
571 | case 'N': { |
---|
572 | char *line, *q; |
---|
573 | fpos = ftell(pimg->fh) - 1; |
---|
574 | if (!pimg->survey) { |
---|
575 | /* FIXME : if there's only one survey in the file, it'd be nice |
---|
576 | * to use its description as the title here... |
---|
577 | */ |
---|
578 | ungetc('N', pimg->fh); |
---|
579 | pimg->start = fpos; |
---|
580 | return pimg; |
---|
581 | } |
---|
582 | line = getline_alloc(pimg->fh); |
---|
583 | if (!line) { |
---|
584 | img_errno = IMG_OUTOFMEMORY; |
---|
585 | goto error; |
---|
586 | } |
---|
587 | len = 0; |
---|
588 | while (line[len] > 32) ++len; |
---|
589 | if (!buf_included(pimg, line, len)) { |
---|
590 | osfree(line); |
---|
591 | continue; |
---|
592 | } |
---|
593 | q = strchr(line + len, 'C'); |
---|
594 | if (q && q[1]) { |
---|
595 | osfree(pimg->title); |
---|
596 | pimg->title = my_strdup(q + 1); |
---|
597 | } else if (!pimg->title) { |
---|
598 | pimg->title = my_strdup(pimg->label); |
---|
599 | } |
---|
600 | osfree(line); |
---|
601 | if (!pimg->title) { |
---|
602 | img_errno = IMG_OUTOFMEMORY; |
---|
603 | goto error; |
---|
604 | } |
---|
605 | if (!pimg->start) pimg->start = fpos; |
---|
606 | fseek(pimg->fh, pimg->start, SEEK_SET); |
---|
607 | return pimg; |
---|
608 | } |
---|
609 | case 'M': case 'D': |
---|
610 | pimg->start = ftell(pimg->fh) - 1; |
---|
611 | break; |
---|
612 | } |
---|
613 | while (ch != '\n' && ch != '\r') { |
---|
614 | ch = GETC(pimg->fh); |
---|
615 | } |
---|
616 | } |
---|
617 | } |
---|
618 | |
---|
619 | /* Although these are often referred to as "CMAP .XYZ files", it seems |
---|
620 | * that actually, the extension .XYZ isn't used, rather .SHT (shot |
---|
621 | * variant, produced by CMAP v16 and later), .UNA (unadjusted) and |
---|
622 | * .ADJ (adjusted) extensions are. Since img has long checked for |
---|
623 | * .XYZ, we continue to do so in case anyone is relying on it. |
---|
624 | */ |
---|
625 | if (has_ext(fnm, len, "sht") || |
---|
626 | has_ext(fnm, len, "adj") || |
---|
627 | has_ext(fnm, len, "una") || |
---|
628 | has_ext(fnm, len, "xyz")) { |
---|
629 | char *line; |
---|
630 | xyz_file: |
---|
631 | /* Spaces aren't legal in CMAP station names, but dots are, so |
---|
632 | * use space as the level separator. */ |
---|
633 | pimg->separator = ' '; |
---|
634 | line = getline_alloc(pimg->fh); |
---|
635 | if (!line) { |
---|
636 | img_errno = IMG_OUTOFMEMORY; |
---|
637 | goto error; |
---|
638 | } |
---|
639 | /* There doesn't seem to be a spec for what happens after 1999 with cmap |
---|
640 | * files, so this code allows for: |
---|
641 | * * 21xx -> xx (up to 2150) |
---|
642 | * * 21xx -> 1xx (up to 2199) |
---|
643 | * * full year being specified instead of 2 digits |
---|
644 | */ |
---|
645 | len = strlen(line); |
---|
646 | if (len > 59) { |
---|
647 | /* Don't just truncate at column 59, allow for a > 2 digit year. */ |
---|
648 | char * p = strstr(line + len, "Page"); |
---|
649 | if (p) { |
---|
650 | while (p > line && p[-1] == ' ') |
---|
651 | --p; |
---|
652 | *p = '\0'; |
---|
653 | len = p - line; |
---|
654 | } else { |
---|
655 | line[59] = '\0'; |
---|
656 | } |
---|
657 | } |
---|
658 | if (len > 45) { |
---|
659 | /* YY/MM/DD HH:MM */ |
---|
660 | struct tm tm; |
---|
661 | unsigned long v; |
---|
662 | char * p; |
---|
663 | pimg->datestamp = my_strdup(line + 45); |
---|
664 | p = pimg->datestamp; |
---|
665 | v = strtoul(p, &p, 10); |
---|
666 | if (v <= 50) { |
---|
667 | /* In the absence of a spec for cmap files, assume <= 50 means 21st |
---|
668 | * century. */ |
---|
669 | v += 2000; |
---|
670 | } else if (v < 200) { |
---|
671 | /* Map 100-199 to 21st century. */ |
---|
672 | v += 1900; |
---|
673 | } |
---|
674 | if (v == ULONG_MAX || *p++ != '/') |
---|
675 | goto bad_cmap_date; |
---|
676 | tm.tm_year = v - 1900; |
---|
677 | v = strtoul(p, &p, 10); |
---|
678 | if (v < 1 || v > 12 || *p++ != '/') |
---|
679 | goto bad_cmap_date; |
---|
680 | tm.tm_mon = v - 1; |
---|
681 | v = strtoul(p, &p, 10); |
---|
682 | if (v < 1 || v > 31 || *p++ != ' ') |
---|
683 | goto bad_cmap_date; |
---|
684 | tm.tm_mday = v; |
---|
685 | v = strtoul(p, &p, 10); |
---|
686 | if (v >= 24 || *p++ != ':') |
---|
687 | goto bad_cmap_date; |
---|
688 | tm.tm_hour = v; |
---|
689 | v = strtoul(p, &p, 10); |
---|
690 | if (v >= 60) |
---|
691 | goto bad_cmap_date; |
---|
692 | tm.tm_min = v; |
---|
693 | if (*p == ':') { |
---|
694 | v = strtoul(p + 1, &p, 10); |
---|
695 | if (v > 60) |
---|
696 | goto bad_cmap_date; |
---|
697 | tm.tm_sec = v; |
---|
698 | } else { |
---|
699 | tm.tm_sec = 0; |
---|
700 | } |
---|
701 | tm.tm_isdst = 0; |
---|
702 | /* We have no indication of what timezone this timestamp is in. It's |
---|
703 | * probably local time for whoever processed the data, so just assume |
---|
704 | * UTC, which is at least fairly central in the possibilities. |
---|
705 | */ |
---|
706 | pimg->datestamp_numeric = mktime_with_tz(&tm, ""); |
---|
707 | } else { |
---|
708 | pimg->datestamp = my_strdup(TIMENA); |
---|
709 | } |
---|
710 | bad_cmap_date: |
---|
711 | if (strncmp(line, " Cave Survey Data Processed by CMAP ", |
---|
712 | LITLEN(" Cave Survey Data Processed by CMAP ")) == 0) { |
---|
713 | len = 0; |
---|
714 | } else { |
---|
715 | if (len > 45) { |
---|
716 | line[45] = '\0'; |
---|
717 | len = 45; |
---|
718 | } |
---|
719 | while (len > 2 && line[len - 1] == ' ') --len; |
---|
720 | if (len > 2) { |
---|
721 | line[len] = '\0'; |
---|
722 | pimg->title = my_strdup(line + 2); |
---|
723 | } |
---|
724 | } |
---|
725 | if (len <= 2) pimg->title = baseleaf_from_fnm(fnm); |
---|
726 | osfree(line); |
---|
727 | if (!pimg->datestamp || !pimg->title) { |
---|
728 | img_errno = IMG_OUTOFMEMORY; |
---|
729 | goto error; |
---|
730 | } |
---|
731 | line = getline_alloc(pimg->fh); |
---|
732 | if (!line) { |
---|
733 | img_errno = IMG_OUTOFMEMORY; |
---|
734 | goto error; |
---|
735 | } |
---|
736 | if (line[0] != ' ' || (line[1] != 'S' && line[1] != 'O')) { |
---|
737 | img_errno = IMG_BADFORMAT; |
---|
738 | goto error; |
---|
739 | } |
---|
740 | if (line[1] == 'S') { |
---|
741 | pimg->version = VERSION_CMAP_STATION; |
---|
742 | } else { |
---|
743 | pimg->version = VERSION_CMAP_SHOT; |
---|
744 | } |
---|
745 | osfree(line); |
---|
746 | line = getline_alloc(pimg->fh); |
---|
747 | if (!line) { |
---|
748 | img_errno = IMG_OUTOFMEMORY; |
---|
749 | goto error; |
---|
750 | } |
---|
751 | if (line[0] != ' ' || line[1] != '-') { |
---|
752 | img_errno = IMG_BADFORMAT; |
---|
753 | goto error; |
---|
754 | } |
---|
755 | osfree(line); |
---|
756 | pimg->start = ftell(pimg->fh); |
---|
757 | return pimg; |
---|
758 | } |
---|
759 | |
---|
760 | if (fread(buf, LITLEN(FILEID) + 1, 1, pimg->fh) != 1 || |
---|
761 | memcmp(buf, FILEID"\n", LITLEN(FILEID) + 1) != 0) { |
---|
762 | if (fread(buf + LITLEN(FILEID) + 1, 8, 1, pimg->fh) == 1 && |
---|
763 | memcmp(buf, FILEID"\r\nv0.01\r\n", LITLEN(FILEID) + 9) == 0) { |
---|
764 | /* v0 3d file with DOS EOLs */ |
---|
765 | pimg->version = 0; |
---|
766 | goto v03d; |
---|
767 | } |
---|
768 | rewind(pimg->fh); |
---|
769 | if (buf[1] == ' ') { |
---|
770 | if (buf[0] == ' ') { |
---|
771 | /* Looks like a CMAP .xyz file ... */ |
---|
772 | goto xyz_file; |
---|
773 | } else if (strchr("ZSNF", buf[0])) { |
---|
774 | /* Looks like a Compass .plt file ... */ |
---|
775 | /* Almost certainly it'll start "Z " */ |
---|
776 | goto plt_file; |
---|
777 | } |
---|
778 | } |
---|
779 | if (buf[0] == '(') { |
---|
780 | /* Looks like a Survex .pos file ... */ |
---|
781 | goto pos_file; |
---|
782 | } |
---|
783 | img_errno = IMG_BADFORMAT; |
---|
784 | goto error; |
---|
785 | } |
---|
786 | |
---|
787 | /* check file format version */ |
---|
788 | ch = GETC(pimg->fh); |
---|
789 | pimg->version = 0; |
---|
790 | if (tolower(ch) == 'b') { |
---|
791 | /* binary file iff B/b prefix */ |
---|
792 | pimg->version = 1; |
---|
793 | ch = GETC(pimg->fh); |
---|
794 | } |
---|
795 | if (ch != 'v') { |
---|
796 | img_errno = IMG_BADFORMAT; |
---|
797 | goto error; |
---|
798 | } |
---|
799 | ch = GETC(pimg->fh); |
---|
800 | if (ch == '0') { |
---|
801 | if (fread(buf, 4, 1, pimg->fh) != 1 || memcmp(buf, ".01\n", 4) != 0) { |
---|
802 | img_errno = IMG_BADFORMAT; |
---|
803 | goto error; |
---|
804 | } |
---|
805 | /* nothing special to do */ |
---|
806 | } else if (pimg->version == 0) { |
---|
807 | if (ch < '2' || ch > '0' + IMG_VERSION_MAX || GETC(pimg->fh) != '\n') { |
---|
808 | img_errno = IMG_TOONEW; |
---|
809 | goto error; |
---|
810 | } |
---|
811 | pimg->version = ch - '0'; |
---|
812 | } else { |
---|
813 | img_errno = IMG_BADFORMAT; |
---|
814 | goto error; |
---|
815 | } |
---|
816 | |
---|
817 | v03d: |
---|
818 | { |
---|
819 | size_t title_len; |
---|
820 | char * title = getline_alloc_len(pimg->fh, &title_len); |
---|
821 | if (pimg->version == 8 && title) { |
---|
822 | /* We sneak in an extra field after a zero byte here, containing the |
---|
823 | * specified coordinate system (if any). Older readers will just |
---|
824 | * not see it (which is fine), and this trick avoids us having to |
---|
825 | * bump the 3d format version. |
---|
826 | */ |
---|
827 | size_t real_len = strlen(title); |
---|
828 | if (real_len != title_len) { |
---|
829 | pimg->cs = my_strdup(title + real_len + 1); |
---|
830 | } |
---|
831 | } |
---|
832 | if (!pimg->title) { |
---|
833 | pimg->title = title; |
---|
834 | } else { |
---|
835 | osfree(title); |
---|
836 | } |
---|
837 | } |
---|
838 | pimg->datestamp = getline_alloc(pimg->fh); |
---|
839 | if (!pimg->title || !pimg->datestamp) { |
---|
840 | img_errno = IMG_OUTOFMEMORY; |
---|
841 | error: |
---|
842 | osfree(pimg->title); |
---|
843 | osfree(pimg->cs); |
---|
844 | osfree(pimg->datestamp); |
---|
845 | osfree(pimg->filename_opened); |
---|
846 | if (pimg->close_func) pimg->close_func(pimg->fh); |
---|
847 | osfree(pimg); |
---|
848 | return NULL; |
---|
849 | } |
---|
850 | |
---|
851 | if (pimg->version >= 8) { |
---|
852 | int flags = GETC(pimg->fh); |
---|
853 | if (flags & img_FFLAG_EXTENDED) pimg->is_extended_elevation = 1; |
---|
854 | } else { |
---|
855 | len = strlen(pimg->title); |
---|
856 | if (len > 11 && strcmp(pimg->title + len - 11, " (extended)") == 0) { |
---|
857 | pimg->title[len - 11] = '\0'; |
---|
858 | pimg->is_extended_elevation = 1; |
---|
859 | } |
---|
860 | } |
---|
861 | |
---|
862 | if (pimg->datestamp[0] == '@') { |
---|
863 | unsigned long v; |
---|
864 | char * p; |
---|
865 | errno = 0; |
---|
866 | v = strtoul(pimg->datestamp + 1, &p, 10); |
---|
867 | if (errno == 0 && *p == '\0') |
---|
868 | pimg->datestamp_numeric = v; |
---|
869 | /* FIXME: We're assuming here that the C time_t epoch is 1970, which is |
---|
870 | * true for Unix-like systems, Mac OS X and Windows, but isn't guaranteed |
---|
871 | * by ISO C. |
---|
872 | */ |
---|
873 | } else { |
---|
874 | /* %a,%Y.%m.%d %H:%M:%S %Z */ |
---|
875 | struct tm tm; |
---|
876 | unsigned long v; |
---|
877 | char * p = pimg->datestamp; |
---|
878 | while (isalpha((unsigned char)*p)) ++p; |
---|
879 | if (*p == ',') ++p; |
---|
880 | while (isspace((unsigned char)*p)) ++p; |
---|
881 | v = strtoul(p, &p, 10); |
---|
882 | if (v == ULONG_MAX || *p++ != '.') |
---|
883 | goto bad_3d_date; |
---|
884 | tm.tm_year = v - 1900; |
---|
885 | v = strtoul(p, &p, 10); |
---|
886 | if (v < 1 || v > 12 || *p++ != '.') |
---|
887 | goto bad_3d_date; |
---|
888 | tm.tm_mon = v - 1; |
---|
889 | v = strtoul(p, &p, 10); |
---|
890 | if (v < 1 || v > 31 || *p++ != ' ') |
---|
891 | goto bad_3d_date; |
---|
892 | tm.tm_mday = v; |
---|
893 | v = strtoul(p, &p, 10); |
---|
894 | if (v >= 24 || *p++ != ':') |
---|
895 | goto bad_3d_date; |
---|
896 | tm.tm_hour = v; |
---|
897 | v = strtoul(p, &p, 10); |
---|
898 | if (v >= 60 || *p++ != ':') |
---|
899 | goto bad_3d_date; |
---|
900 | tm.tm_min = v; |
---|
901 | v = strtoul(p, &p, 10); |
---|
902 | if (v > 60) |
---|
903 | goto bad_3d_date; |
---|
904 | tm.tm_sec = v; |
---|
905 | tm.tm_isdst = 0; |
---|
906 | while (isspace((unsigned char)*p)) ++p; |
---|
907 | /* p now points to the timezone string. |
---|
908 | * |
---|
909 | * However, it's likely to be a string like "BST", and such strings can |
---|
910 | * be ambiguous (BST could be UTC+1 or UTC+6), so it is impossible to |
---|
911 | * reliably convert in all cases. Just pass what we have to tzset() - if |
---|
912 | * it doesn't handle it, UTC will be used. |
---|
913 | */ |
---|
914 | pimg->datestamp_numeric = mktime_with_tz(&tm, p); |
---|
915 | } |
---|
916 | bad_3d_date: |
---|
917 | |
---|
918 | pimg->start = ftell(pimg->fh); |
---|
919 | |
---|
920 | return pimg; |
---|
921 | } |
---|
922 | |
---|
923 | int |
---|
924 | img_rewind(img *pimg) |
---|
925 | { |
---|
926 | if (!pimg->fRead) { |
---|
927 | img_errno = IMG_WRITEERROR; |
---|
928 | return 0; |
---|
929 | } |
---|
930 | if (fseek(pimg->fh, pimg->start, SEEK_SET) != 0) { |
---|
931 | img_errno = IMG_READERROR; |
---|
932 | return 0; |
---|
933 | } |
---|
934 | clearerr(pimg->fh); |
---|
935 | /* [VERSION_SURVEX_POS] already skipped heading line, or there wasn't one |
---|
936 | * [version 0] not in the middle of a 'LINE' command |
---|
937 | * [version >= 3] not in the middle of turning a LINE into a MOVE */ |
---|
938 | pimg->pending = 0; |
---|
939 | |
---|
940 | img_errno = IMG_NONE; |
---|
941 | |
---|
942 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
---|
943 | /* for VERSION_COMPASS_PLT, 0 value indicates we haven't entered a survey |
---|
944 | * yet */ |
---|
945 | /* for VERSION_CMAP_SHOT, we store the last station here to detect whether |
---|
946 | * we MOVE or LINE */ |
---|
947 | pimg->label_len = 0; |
---|
948 | pimg->style = img_STYLE_UNKNOWN; |
---|
949 | return 1; |
---|
950 | } |
---|
951 | |
---|
952 | img * |
---|
953 | img_open_write_cs(const char *fnm, const char *title, const char *cs, int flags) |
---|
954 | { |
---|
955 | if (fDirectory(fnm)) { |
---|
956 | img_errno = IMG_DIRECTORY; |
---|
957 | return NULL; |
---|
958 | } |
---|
959 | |
---|
960 | return img_write_stream(fopen(fnm, "wb"), fclose, title, cs, flags); |
---|
961 | } |
---|
962 | |
---|
963 | img * |
---|
964 | img_write_stream(FILE *stream, int (*close_func)(FILE*), |
---|
965 | const char *title, const char *cs, int flags) |
---|
966 | { |
---|
967 | time_t tm; |
---|
968 | img *pimg; |
---|
969 | |
---|
970 | if (stream == NULL) { |
---|
971 | img_errno = IMG_FILENOTFOUND; |
---|
972 | return NULL; |
---|
973 | } |
---|
974 | |
---|
975 | pimg = osnew(img); |
---|
976 | if (pimg == NULL) { |
---|
977 | img_errno = IMG_OUTOFMEMORY; |
---|
978 | if (close_func) close_func(stream); |
---|
979 | return NULL; |
---|
980 | } |
---|
981 | |
---|
982 | pimg->fh = stream; |
---|
983 | pimg->close_func = close_func; |
---|
984 | pimg->buf_len = 257; |
---|
985 | pimg->label_buf = (char *)xosmalloc(pimg->buf_len); |
---|
986 | if (!pimg->label_buf) { |
---|
987 | if (pimg->close_func) pimg->close_func(pimg->fh); |
---|
988 | osfree(pimg); |
---|
989 | img_errno = IMG_OUTOFMEMORY; |
---|
990 | return NULL; |
---|
991 | } |
---|
992 | |
---|
993 | pimg->filename_opened = NULL; |
---|
994 | |
---|
995 | /* Output image file header */ |
---|
996 | fputs("Survex 3D Image File\n", pimg->fh); /* file identifier string */ |
---|
997 | if (img_output_version < 2) { |
---|
998 | pimg->version = 1; |
---|
999 | fputs("Bv0.01\n", pimg->fh); /* binary file format version number */ |
---|
1000 | } else { |
---|
1001 | pimg->version = (img_output_version > IMG_VERSION_MAX) ? IMG_VERSION_MAX : img_output_version; |
---|
1002 | fprintf(pimg->fh, "v%d\n", pimg->version); /* file format version no. */ |
---|
1003 | } |
---|
1004 | |
---|
1005 | fputs(title, pimg->fh); |
---|
1006 | if (pimg->version < 8 && (flags & img_FFLAG_EXTENDED)) { |
---|
1007 | /* Older format versions append " (extended)" to the title to mark |
---|
1008 | * extended elevations. */ |
---|
1009 | size_t len = strlen(title); |
---|
1010 | if (len < 11 || strcmp(title + len - 11, " (extended)") != 0) |
---|
1011 | fputs(" (extended)", pimg->fh); |
---|
1012 | } |
---|
1013 | if (pimg->version == 8 && cs && *cs) { |
---|
1014 | /* We sneak in an extra field after a zero byte here, containing the |
---|
1015 | * specified coordinate system (if any). Older readers will just not |
---|
1016 | * see it (which is fine), and this trick avoids us having to bump the |
---|
1017 | * 3d format version. |
---|
1018 | */ |
---|
1019 | PUTC('\0', pimg->fh); |
---|
1020 | fputs(cs, pimg->fh); |
---|
1021 | } |
---|
1022 | PUTC('\n', pimg->fh); |
---|
1023 | |
---|
1024 | tm = time(NULL); |
---|
1025 | if (tm == (time_t)-1) { |
---|
1026 | fputsnl(TIMENA, pimg->fh); |
---|
1027 | } else if (pimg->version <= 7) { |
---|
1028 | char date[256]; |
---|
1029 | /* output current date and time in format specified */ |
---|
1030 | strftime(date, 256, TIMEFMT, localtime(&tm)); |
---|
1031 | fputsnl(date, pimg->fh); |
---|
1032 | } else { |
---|
1033 | fprintf(pimg->fh, "@%ld\n", (long)tm); |
---|
1034 | } |
---|
1035 | |
---|
1036 | if (pimg->version >= 8) { |
---|
1037 | /* Clear bit one in case anyone has been passing true for fBinary. */ |
---|
1038 | flags &=~ 1; |
---|
1039 | PUTC(flags, pimg->fh); |
---|
1040 | } |
---|
1041 | |
---|
1042 | #if 0 |
---|
1043 | if (img_output_version >= 5) { |
---|
1044 | static const unsigned char codelengths[32] = { |
---|
1045 | 4, 8, 8, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
---|
1046 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
---|
1047 | }; |
---|
1048 | fwrite(codelengths, 32, 1, pimg->fh); |
---|
1049 | } |
---|
1050 | #endif |
---|
1051 | pimg->fRead = 0; /* writing to this file */ |
---|
1052 | img_errno = IMG_NONE; |
---|
1053 | |
---|
1054 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
---|
1055 | pimg->label_buf[0] = '\0'; |
---|
1056 | pimg->label_len = 0; |
---|
1057 | |
---|
1058 | #if IMG_API_VERSION == 0 |
---|
1059 | pimg->date1 = pimg->date2 = 0; |
---|
1060 | pimg->olddate1 = pimg->olddate2 = 0; |
---|
1061 | #else /* IMG_API_VERSION == 1 */ |
---|
1062 | pimg->days1 = pimg->days2 = -1; |
---|
1063 | pimg->olddays1 = pimg->olddays2 = -1; |
---|
1064 | #endif |
---|
1065 | pimg->style = pimg->oldstyle = img_STYLE_UNKNOWN; |
---|
1066 | |
---|
1067 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
1068 | |
---|
1069 | pimg->n_legs = 0; |
---|
1070 | pimg->length = 0.0; |
---|
1071 | pimg->E = pimg->H = pimg->V = 0.0; |
---|
1072 | |
---|
1073 | /* Don't check for write errors now - let img_close() report them... */ |
---|
1074 | return pimg; |
---|
1075 | } |
---|
1076 | |
---|
1077 | static void |
---|
1078 | read_xyz_station_coords(img_point *pt, const char *line) |
---|
1079 | { |
---|
1080 | char num[12]; |
---|
1081 | memcpy(num, line + 6, 9); |
---|
1082 | num[9] = '\0'; |
---|
1083 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
1084 | memcpy(num, line + 15, 9); |
---|
1085 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
1086 | memcpy(num, line + 24, 8); |
---|
1087 | num[8] = '\0'; |
---|
1088 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
1089 | } |
---|
1090 | |
---|
1091 | static void |
---|
1092 | read_xyz_shot_coords(img_point *pt, const char *line) |
---|
1093 | { |
---|
1094 | char num[12]; |
---|
1095 | memcpy(num, line + 40, 10); |
---|
1096 | num[10] = '\0'; |
---|
1097 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
1098 | memcpy(num, line + 50, 10); |
---|
1099 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
1100 | memcpy(num, line + 60, 9); |
---|
1101 | num[9] = '\0'; |
---|
1102 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
1103 | } |
---|
1104 | |
---|
1105 | static void |
---|
1106 | subtract_xyz_shot_deltas(img_point *pt, const char *line) |
---|
1107 | { |
---|
1108 | char num[12]; |
---|
1109 | memcpy(num, line + 15, 9); |
---|
1110 | num[9] = '\0'; |
---|
1111 | pt->x -= atof(num) / METRES_PER_FOOT; |
---|
1112 | memcpy(num, line + 24, 8); |
---|
1113 | num[8] = '\0'; |
---|
1114 | pt->y -= atof(num) / METRES_PER_FOOT; |
---|
1115 | memcpy(num, line + 32, 8); |
---|
1116 | pt->z -= atof(num) / METRES_PER_FOOT; |
---|
1117 | } |
---|
1118 | |
---|
1119 | static int |
---|
1120 | read_coord(FILE *fh, img_point *pt) |
---|
1121 | { |
---|
1122 | SVX_ASSERT(fh); |
---|
1123 | SVX_ASSERT(pt); |
---|
1124 | pt->x = get32(fh) / 100.0; |
---|
1125 | pt->y = get32(fh) / 100.0; |
---|
1126 | pt->z = get32(fh) / 100.0; |
---|
1127 | if (ferror(fh) || feof(fh)) { |
---|
1128 | img_errno = feof(fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1129 | return 0; |
---|
1130 | } |
---|
1131 | return 1; |
---|
1132 | } |
---|
1133 | |
---|
1134 | static int |
---|
1135 | skip_coord(FILE *fh) |
---|
1136 | { |
---|
1137 | return (fseek(fh, 12, SEEK_CUR) == 0); |
---|
1138 | } |
---|
1139 | |
---|
1140 | static int |
---|
1141 | read_v3label(img *pimg) |
---|
1142 | { |
---|
1143 | char *q; |
---|
1144 | long len = GETC(pimg->fh); |
---|
1145 | if (len == EOF) { |
---|
1146 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1147 | return img_BAD; |
---|
1148 | } |
---|
1149 | if (len == 0xfe) { |
---|
1150 | len += get16(pimg->fh); |
---|
1151 | if (feof(pimg->fh)) { |
---|
1152 | img_errno = IMG_BADFORMAT; |
---|
1153 | return img_BAD; |
---|
1154 | } |
---|
1155 | if (ferror(pimg->fh)) { |
---|
1156 | img_errno = IMG_READERROR; |
---|
1157 | return img_BAD; |
---|
1158 | } |
---|
1159 | } else if (len == 0xff) { |
---|
1160 | len = get32(pimg->fh); |
---|
1161 | if (ferror(pimg->fh)) { |
---|
1162 | img_errno = IMG_READERROR; |
---|
1163 | return img_BAD; |
---|
1164 | } |
---|
1165 | if (feof(pimg->fh) || len < 0xfe + 0xffff) { |
---|
1166 | img_errno = IMG_BADFORMAT; |
---|
1167 | return img_BAD; |
---|
1168 | } |
---|
1169 | } |
---|
1170 | |
---|
1171 | if (!check_label_space(pimg, pimg->label_len + len + 1)) { |
---|
1172 | img_errno = IMG_OUTOFMEMORY; |
---|
1173 | return img_BAD; |
---|
1174 | } |
---|
1175 | q = pimg->label_buf + pimg->label_len; |
---|
1176 | pimg->label_len += len; |
---|
1177 | if (len && fread(q, len, 1, pimg->fh) != 1) { |
---|
1178 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1179 | return img_BAD; |
---|
1180 | } |
---|
1181 | q[len] = '\0'; |
---|
1182 | return 0; |
---|
1183 | } |
---|
1184 | |
---|
1185 | static int |
---|
1186 | read_v8label(img *pimg, int common_flag, size_t common_val) |
---|
1187 | { |
---|
1188 | char *q; |
---|
1189 | size_t del, add; |
---|
1190 | if (common_flag) { |
---|
1191 | if (common_val == 0) return 0; |
---|
1192 | add = del = common_val; |
---|
1193 | } else { |
---|
1194 | int ch = GETC(pimg->fh); |
---|
1195 | if (ch == EOF) { |
---|
1196 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1197 | return img_BAD; |
---|
1198 | } |
---|
1199 | if (ch != 0x00) { |
---|
1200 | del = ch >> 4; |
---|
1201 | add = ch & 0x0f; |
---|
1202 | } else { |
---|
1203 | ch = GETC(pimg->fh); |
---|
1204 | if (ch == EOF) { |
---|
1205 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1206 | return img_BAD; |
---|
1207 | } |
---|
1208 | if (ch != 0xff) { |
---|
1209 | del = ch; |
---|
1210 | } else { |
---|
1211 | del = get32(pimg->fh); |
---|
1212 | if (ferror(pimg->fh)) { |
---|
1213 | img_errno = IMG_READERROR; |
---|
1214 | return img_BAD; |
---|
1215 | } |
---|
1216 | } |
---|
1217 | ch = GETC(pimg->fh); |
---|
1218 | if (ch == EOF) { |
---|
1219 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1220 | return img_BAD; |
---|
1221 | } |
---|
1222 | if (ch != 0xff) { |
---|
1223 | add = ch; |
---|
1224 | } else { |
---|
1225 | add = get32(pimg->fh); |
---|
1226 | if (ferror(pimg->fh)) { |
---|
1227 | img_errno = IMG_READERROR; |
---|
1228 | return img_BAD; |
---|
1229 | } |
---|
1230 | } |
---|
1231 | } |
---|
1232 | |
---|
1233 | if (add > del && !check_label_space(pimg, pimg->label_len + add - del + 1)) { |
---|
1234 | img_errno = IMG_OUTOFMEMORY; |
---|
1235 | return img_BAD; |
---|
1236 | } |
---|
1237 | } |
---|
1238 | if (del > pimg->label_len) { |
---|
1239 | img_errno = IMG_BADFORMAT; |
---|
1240 | return img_BAD; |
---|
1241 | } |
---|
1242 | pimg->label_len -= del; |
---|
1243 | q = pimg->label_buf + pimg->label_len; |
---|
1244 | pimg->label_len += add; |
---|
1245 | if (add && fread(q, add, 1, pimg->fh) != 1) { |
---|
1246 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1247 | return img_BAD; |
---|
1248 | } |
---|
1249 | q[add] = '\0'; |
---|
1250 | return 0; |
---|
1251 | } |
---|
1252 | |
---|
1253 | static int img_read_item_new(img *pimg, img_point *p); |
---|
1254 | static int img_read_item_v3to7(img *pimg, img_point *p); |
---|
1255 | static int img_read_item_ancient(img *pimg, img_point *p); |
---|
1256 | static int img_read_item_ascii_wrapper(img *pimg, img_point *p); |
---|
1257 | static int img_read_item_ascii(img *pimg, img_point *p); |
---|
1258 | |
---|
1259 | int |
---|
1260 | img_read_item(img *pimg, img_point *p) |
---|
1261 | { |
---|
1262 | pimg->flags = 0; |
---|
1263 | |
---|
1264 | if (pimg->version >= 8) { |
---|
1265 | return img_read_item_new(pimg, p); |
---|
1266 | } else if (pimg->version >= 3) { |
---|
1267 | return img_read_item_v3to7(pimg, p); |
---|
1268 | } else if (pimg->version >= 1) { |
---|
1269 | return img_read_item_ancient(pimg, p); |
---|
1270 | } else { |
---|
1271 | return img_read_item_ascii_wrapper(pimg, p); |
---|
1272 | } |
---|
1273 | } |
---|
1274 | |
---|
1275 | static int |
---|
1276 | img_read_item_new(img *pimg, img_point *p) |
---|
1277 | { |
---|
1278 | int result; |
---|
1279 | int opt; |
---|
1280 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
1281 | if (pimg->pending >= 0x40) { |
---|
1282 | if (pimg->pending == 256) { |
---|
1283 | pimg->pending = 0; |
---|
1284 | return img_XSECT_END; |
---|
1285 | } |
---|
1286 | *p = pimg->mv; |
---|
1287 | pimg->flags = (int)(pimg->pending) & 0x3f; |
---|
1288 | pimg->pending = 0; |
---|
1289 | return img_LINE; |
---|
1290 | } |
---|
1291 | again3: /* label to goto if we get a prefix, date, or lrud */ |
---|
1292 | pimg->label = pimg->label_buf; |
---|
1293 | opt = GETC(pimg->fh); |
---|
1294 | if (opt == EOF) { |
---|
1295 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1296 | return img_BAD; |
---|
1297 | } |
---|
1298 | if (opt >> 6 == 0) { |
---|
1299 | if (opt <= 4) { |
---|
1300 | if (opt == 0 && pimg->style == 0) |
---|
1301 | return img_STOP; /* end of data marker */ |
---|
1302 | /* STYLE */ |
---|
1303 | pimg->style = opt; |
---|
1304 | goto again3; |
---|
1305 | } |
---|
1306 | if (opt >= 0x10) { |
---|
1307 | switch (opt) { |
---|
1308 | case 0x10: { /* No date info */ |
---|
1309 | #if IMG_API_VERSION == 0 |
---|
1310 | pimg->date1 = pimg->date2 = 0; |
---|
1311 | #else /* IMG_API_VERSION == 1 */ |
---|
1312 | pimg->days1 = pimg->days2 = -1; |
---|
1313 | #endif |
---|
1314 | break; |
---|
1315 | } |
---|
1316 | case 0x11: { /* Single date */ |
---|
1317 | int days1 = (int)getu16(pimg->fh); |
---|
1318 | #if IMG_API_VERSION == 0 |
---|
1319 | pimg->date2 = pimg->date1 = (days1 - 25567) * 86400; |
---|
1320 | #else /* IMG_API_VERSION == 1 */ |
---|
1321 | pimg->days2 = pimg->days1 = days1; |
---|
1322 | #endif |
---|
1323 | break; |
---|
1324 | } |
---|
1325 | case 0x12: { /* Date range (short) */ |
---|
1326 | int days1 = (int)getu16(pimg->fh); |
---|
1327 | int days2 = days1 + GETC(pimg->fh) + 1; |
---|
1328 | #if IMG_API_VERSION == 0 |
---|
1329 | pimg->date1 = (days1 - 25567) * 86400; |
---|
1330 | pimg->date2 = (days2 - 25567) * 86400; |
---|
1331 | #else /* IMG_API_VERSION == 1 */ |
---|
1332 | pimg->days1 = days1; |
---|
1333 | pimg->days2 = days2; |
---|
1334 | #endif |
---|
1335 | break; |
---|
1336 | } |
---|
1337 | case 0x13: { /* Date range (long) */ |
---|
1338 | int days1 = (int)getu16(pimg->fh); |
---|
1339 | int days2 = (int)getu16(pimg->fh); |
---|
1340 | #if IMG_API_VERSION == 0 |
---|
1341 | pimg->date1 = (days1 - 25567) * 86400; |
---|
1342 | pimg->date2 = (days2 - 25567) * 86400; |
---|
1343 | #else /* IMG_API_VERSION == 1 */ |
---|
1344 | pimg->days1 = days1; |
---|
1345 | pimg->days2 = days2; |
---|
1346 | #endif |
---|
1347 | break; |
---|
1348 | } |
---|
1349 | case 0x1f: /* Error info */ |
---|
1350 | pimg->n_legs = get32(pimg->fh); |
---|
1351 | pimg->length = get32(pimg->fh) / 100.0; |
---|
1352 | pimg->E = get32(pimg->fh) / 100.0; |
---|
1353 | pimg->H = get32(pimg->fh) / 100.0; |
---|
1354 | pimg->V = get32(pimg->fh) / 100.0; |
---|
1355 | return img_ERROR_INFO; |
---|
1356 | case 0x30: case 0x31: /* LRUD */ |
---|
1357 | case 0x32: case 0x33: /* Big LRUD! */ |
---|
1358 | if (read_v8label(pimg, 0, 0) == img_BAD) return img_BAD; |
---|
1359 | pimg->flags = (int)opt & 0x01; |
---|
1360 | if (opt < 0x32) { |
---|
1361 | pimg->l = get16(pimg->fh) / 100.0; |
---|
1362 | pimg->r = get16(pimg->fh) / 100.0; |
---|
1363 | pimg->u = get16(pimg->fh) / 100.0; |
---|
1364 | pimg->d = get16(pimg->fh) / 100.0; |
---|
1365 | } else { |
---|
1366 | pimg->l = get32(pimg->fh) / 100.0; |
---|
1367 | pimg->r = get32(pimg->fh) / 100.0; |
---|
1368 | pimg->u = get32(pimg->fh) / 100.0; |
---|
1369 | pimg->d = get32(pimg->fh) / 100.0; |
---|
1370 | } |
---|
1371 | if (!stn_included(pimg)) { |
---|
1372 | return img_XSECT_END; |
---|
1373 | } |
---|
1374 | /* If this is the last cross-section in this passage, set |
---|
1375 | * pending so we return img_XSECT_END next time. */ |
---|
1376 | if (pimg->flags & 0x01) { |
---|
1377 | pimg->pending = 256; |
---|
1378 | pimg->flags &= ~0x01; |
---|
1379 | } |
---|
1380 | return img_XSECT; |
---|
1381 | default: /* 0x25 - 0x2f and 0x34 - 0x3f are currently unallocated. */ |
---|
1382 | img_errno = IMG_BADFORMAT; |
---|
1383 | return img_BAD; |
---|
1384 | } |
---|
1385 | goto again3; |
---|
1386 | } |
---|
1387 | if (opt != 15) { |
---|
1388 | /* 1-14 and 16-31 reserved */ |
---|
1389 | img_errno = IMG_BADFORMAT; |
---|
1390 | return img_BAD; |
---|
1391 | } |
---|
1392 | result = img_MOVE; |
---|
1393 | } else if (opt >= 0x80) { |
---|
1394 | if (read_v8label(pimg, 0, 0) == img_BAD) return img_BAD; |
---|
1395 | |
---|
1396 | result = img_LABEL; |
---|
1397 | |
---|
1398 | if (!stn_included(pimg)) { |
---|
1399 | if (!skip_coord(pimg->fh)) return img_BAD; |
---|
1400 | pimg->pending = 0; |
---|
1401 | goto again3; |
---|
1402 | } |
---|
1403 | |
---|
1404 | pimg->flags = (int)opt & 0x7f; |
---|
1405 | } else if ((opt >> 6) == 1) { |
---|
1406 | if (read_v8label(pimg, opt & 0x20, 0) == img_BAD) return img_BAD; |
---|
1407 | |
---|
1408 | result = img_LINE; |
---|
1409 | |
---|
1410 | if (!survey_included(pimg)) { |
---|
1411 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
1412 | pimg->pending = 15; |
---|
1413 | goto again3; |
---|
1414 | } |
---|
1415 | |
---|
1416 | if (pimg->pending) { |
---|
1417 | *p = pimg->mv; |
---|
1418 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
1419 | pimg->pending = opt; |
---|
1420 | return img_MOVE; |
---|
1421 | } |
---|
1422 | pimg->flags = (int)opt & 0x1f; |
---|
1423 | } else { |
---|
1424 | img_errno = IMG_BADFORMAT; |
---|
1425 | return img_BAD; |
---|
1426 | } |
---|
1427 | if (!read_coord(pimg->fh, p)) return img_BAD; |
---|
1428 | pimg->pending = 0; |
---|
1429 | return result; |
---|
1430 | } |
---|
1431 | |
---|
1432 | static int |
---|
1433 | img_read_item_v3to7(img *pimg, img_point *p) |
---|
1434 | { |
---|
1435 | int result; |
---|
1436 | int opt; |
---|
1437 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
1438 | if (pimg->pending == 256) { |
---|
1439 | pimg->pending = 0; |
---|
1440 | return img_XSECT_END; |
---|
1441 | } |
---|
1442 | if (pimg->pending >= 0x80) { |
---|
1443 | *p = pimg->mv; |
---|
1444 | pimg->flags = (int)(pimg->pending) & 0x3f; |
---|
1445 | pimg->pending = 0; |
---|
1446 | return img_LINE; |
---|
1447 | } |
---|
1448 | again3: /* label to goto if we get a prefix, date, or lrud */ |
---|
1449 | pimg->label = pimg->label_buf; |
---|
1450 | opt = GETC(pimg->fh); |
---|
1451 | if (opt == EOF) { |
---|
1452 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1453 | return img_BAD; |
---|
1454 | } |
---|
1455 | switch (opt >> 6) { |
---|
1456 | case 0: |
---|
1457 | if (opt == 0) { |
---|
1458 | if (!pimg->label_len) return img_STOP; /* end of data marker */ |
---|
1459 | pimg->label_len = 0; |
---|
1460 | goto again3; |
---|
1461 | } |
---|
1462 | if (opt < 15) { |
---|
1463 | /* 1-14 mean trim that many levels from current prefix */ |
---|
1464 | int c; |
---|
1465 | if (pimg->label_len <= 17) { |
---|
1466 | /* zero prefix using "0" */ |
---|
1467 | img_errno = IMG_BADFORMAT; |
---|
1468 | return img_BAD; |
---|
1469 | } |
---|
1470 | /* extra - 1 because label_len points to one past the end */ |
---|
1471 | c = pimg->label_len - 17 - 1; |
---|
1472 | while (pimg->label_buf[c] != '.' || --opt > 0) { |
---|
1473 | if (--c < 0) { |
---|
1474 | /* zero prefix using "0" */ |
---|
1475 | img_errno = IMG_BADFORMAT; |
---|
1476 | return img_BAD; |
---|
1477 | } |
---|
1478 | } |
---|
1479 | c++; |
---|
1480 | pimg->label_len = c; |
---|
1481 | goto again3; |
---|
1482 | } |
---|
1483 | if (opt == 15) { |
---|
1484 | result = img_MOVE; |
---|
1485 | break; |
---|
1486 | } |
---|
1487 | if (opt >= 0x20) { |
---|
1488 | switch (opt) { |
---|
1489 | case 0x20: /* Single date */ |
---|
1490 | if (pimg->version < 7) { |
---|
1491 | int date1 = get32(pimg->fh); |
---|
1492 | #if IMG_API_VERSION == 0 |
---|
1493 | pimg->date2 = pimg->date1 = date1; |
---|
1494 | #else /* IMG_API_VERSION == 1 */ |
---|
1495 | if (date1 != 0) { |
---|
1496 | pimg->days2 = pimg->days1 = (date1 / 86400) + 25567; |
---|
1497 | } else { |
---|
1498 | pimg->days2 = pimg->days1 = -1; |
---|
1499 | } |
---|
1500 | #endif |
---|
1501 | } else { |
---|
1502 | int days1 = (int)getu16(pimg->fh); |
---|
1503 | #if IMG_API_VERSION == 0 |
---|
1504 | pimg->date2 = pimg->date1 = (days1 - 25567) * 86400; |
---|
1505 | #else /* IMG_API_VERSION == 1 */ |
---|
1506 | pimg->days2 = pimg->days1 = days1; |
---|
1507 | #endif |
---|
1508 | } |
---|
1509 | break; |
---|
1510 | case 0x21: /* Date range (short for v7+) */ |
---|
1511 | if (pimg->version < 7) { |
---|
1512 | INT32_T date1 = get32(pimg->fh); |
---|
1513 | INT32_T date2 = get32(pimg->fh); |
---|
1514 | #if IMG_API_VERSION == 0 |
---|
1515 | pimg->date1 = date1; |
---|
1516 | pimg->date2 = date2; |
---|
1517 | #else /* IMG_API_VERSION == 1 */ |
---|
1518 | pimg->days1 = (date1 / 86400) + 25567; |
---|
1519 | pimg->days2 = (date2 / 86400) + 25567; |
---|
1520 | #endif |
---|
1521 | } else { |
---|
1522 | int days1 = (int)getu16(pimg->fh); |
---|
1523 | int days2 = days1 + GETC(pimg->fh) + 1; |
---|
1524 | #if IMG_API_VERSION == 0 |
---|
1525 | pimg->date1 = (days1 - 25567) * 86400; |
---|
1526 | pimg->date2 = (days2 - 25567) * 86400; |
---|
1527 | #else /* IMG_API_VERSION == 1 */ |
---|
1528 | pimg->days1 = days1; |
---|
1529 | pimg->days2 = days2; |
---|
1530 | #endif |
---|
1531 | } |
---|
1532 | break; |
---|
1533 | case 0x22: /* Error info */ |
---|
1534 | pimg->n_legs = get32(pimg->fh); |
---|
1535 | pimg->length = get32(pimg->fh) / 100.0; |
---|
1536 | pimg->E = get32(pimg->fh) / 100.0; |
---|
1537 | pimg->H = get32(pimg->fh) / 100.0; |
---|
1538 | pimg->V = get32(pimg->fh) / 100.0; |
---|
1539 | if (feof(pimg->fh)) { |
---|
1540 | img_errno = IMG_BADFORMAT; |
---|
1541 | return img_BAD; |
---|
1542 | } |
---|
1543 | if (ferror(pimg->fh)) { |
---|
1544 | img_errno = IMG_READERROR; |
---|
1545 | return img_BAD; |
---|
1546 | } |
---|
1547 | return img_ERROR_INFO; |
---|
1548 | case 0x23: { /* v7+: Date range (long) */ |
---|
1549 | if (pimg->version < 7) { |
---|
1550 | img_errno = IMG_BADFORMAT; |
---|
1551 | return img_BAD; |
---|
1552 | } |
---|
1553 | int days1 = (int)getu16(pimg->fh); |
---|
1554 | int days2 = (int)getu16(pimg->fh); |
---|
1555 | if (feof(pimg->fh)) { |
---|
1556 | img_errno = IMG_BADFORMAT; |
---|
1557 | return img_BAD; |
---|
1558 | } |
---|
1559 | if (ferror(pimg->fh)) { |
---|
1560 | img_errno = IMG_READERROR; |
---|
1561 | return img_BAD; |
---|
1562 | } |
---|
1563 | #if IMG_API_VERSION == 0 |
---|
1564 | pimg->date1 = (days1 - 25567) * 86400; |
---|
1565 | pimg->date2 = (days2 - 25567) * 86400; |
---|
1566 | #else /* IMG_API_VERSION == 1 */ |
---|
1567 | pimg->days1 = days1; |
---|
1568 | pimg->days2 = days2; |
---|
1569 | #endif |
---|
1570 | break; |
---|
1571 | } |
---|
1572 | case 0x24: { /* v7+: No date info */ |
---|
1573 | #if IMG_API_VERSION == 0 |
---|
1574 | pimg->date1 = pimg->date2 = 0; |
---|
1575 | #else /* IMG_API_VERSION == 1 */ |
---|
1576 | pimg->days1 = pimg->days2 = -1; |
---|
1577 | #endif |
---|
1578 | break; |
---|
1579 | } |
---|
1580 | case 0x30: case 0x31: /* LRUD */ |
---|
1581 | case 0x32: case 0x33: /* Big LRUD! */ |
---|
1582 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
1583 | pimg->flags = (int)opt & 0x01; |
---|
1584 | if (opt < 0x32) { |
---|
1585 | pimg->l = get16(pimg->fh) / 100.0; |
---|
1586 | pimg->r = get16(pimg->fh) / 100.0; |
---|
1587 | pimg->u = get16(pimg->fh) / 100.0; |
---|
1588 | pimg->d = get16(pimg->fh) / 100.0; |
---|
1589 | } else { |
---|
1590 | pimg->l = get32(pimg->fh) / 100.0; |
---|
1591 | pimg->r = get32(pimg->fh) / 100.0; |
---|
1592 | pimg->u = get32(pimg->fh) / 100.0; |
---|
1593 | pimg->d = get32(pimg->fh) / 100.0; |
---|
1594 | } |
---|
1595 | if (feof(pimg->fh)) { |
---|
1596 | img_errno = IMG_BADFORMAT; |
---|
1597 | return img_BAD; |
---|
1598 | } |
---|
1599 | if (ferror(pimg->fh)) { |
---|
1600 | img_errno = IMG_READERROR; |
---|
1601 | return img_BAD; |
---|
1602 | } |
---|
1603 | if (!stn_included(pimg)) { |
---|
1604 | return img_XSECT_END; |
---|
1605 | } |
---|
1606 | /* If this is the last cross-section in this passage, set |
---|
1607 | * pending so we return img_XSECT_END next time. */ |
---|
1608 | if (pimg->flags & 0x01) { |
---|
1609 | pimg->pending = 256; |
---|
1610 | pimg->flags &= ~0x01; |
---|
1611 | } |
---|
1612 | return img_XSECT; |
---|
1613 | default: /* 0x25 - 0x2f and 0x34 - 0x3f are currently unallocated. */ |
---|
1614 | img_errno = IMG_BADFORMAT; |
---|
1615 | return img_BAD; |
---|
1616 | } |
---|
1617 | if (feof(pimg->fh)) { |
---|
1618 | img_errno = IMG_BADFORMAT; |
---|
1619 | return img_BAD; |
---|
1620 | } |
---|
1621 | if (ferror(pimg->fh)) { |
---|
1622 | img_errno = IMG_READERROR; |
---|
1623 | return img_BAD; |
---|
1624 | } |
---|
1625 | goto again3; |
---|
1626 | } |
---|
1627 | /* 16-31 mean remove (n - 15) characters from the prefix */ |
---|
1628 | /* zero prefix using 0 */ |
---|
1629 | if (pimg->label_len <= (size_t)(opt - 15)) { |
---|
1630 | img_errno = IMG_BADFORMAT; |
---|
1631 | return img_BAD; |
---|
1632 | } |
---|
1633 | pimg->label_len -= (opt - 15); |
---|
1634 | goto again3; |
---|
1635 | case 1: |
---|
1636 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
1637 | |
---|
1638 | result = img_LABEL; |
---|
1639 | |
---|
1640 | if (!stn_included(pimg)) { |
---|
1641 | if (!skip_coord(pimg->fh)) return img_BAD; |
---|
1642 | pimg->pending = 0; |
---|
1643 | goto again3; |
---|
1644 | } |
---|
1645 | |
---|
1646 | pimg->flags = (int)opt & 0x3f; |
---|
1647 | break; |
---|
1648 | case 2: |
---|
1649 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
1650 | |
---|
1651 | result = img_LINE; |
---|
1652 | |
---|
1653 | if (!survey_included(pimg)) { |
---|
1654 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
1655 | pimg->pending = 15; |
---|
1656 | goto again3; |
---|
1657 | } |
---|
1658 | |
---|
1659 | if (pimg->pending) { |
---|
1660 | *p = pimg->mv; |
---|
1661 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
1662 | pimg->pending = opt; |
---|
1663 | return img_MOVE; |
---|
1664 | } |
---|
1665 | pimg->flags = (int)opt & 0x3f; |
---|
1666 | break; |
---|
1667 | default: |
---|
1668 | img_errno = IMG_BADFORMAT; |
---|
1669 | return img_BAD; |
---|
1670 | } |
---|
1671 | if (!read_coord(pimg->fh, p)) return img_BAD; |
---|
1672 | pimg->pending = 0; |
---|
1673 | return result; |
---|
1674 | } |
---|
1675 | |
---|
1676 | static int |
---|
1677 | img_read_item_ancient(img *pimg, img_point *p) |
---|
1678 | { |
---|
1679 | int result; |
---|
1680 | static long opt_lookahead = 0; |
---|
1681 | static img_point pt = { 0.0, 0.0, 0.0 }; |
---|
1682 | long opt; |
---|
1683 | |
---|
1684 | again: /* label to goto if we get a cross */ |
---|
1685 | pimg->label = pimg->label_buf; |
---|
1686 | pimg->label[0] = '\0'; |
---|
1687 | |
---|
1688 | if (pimg->version == 1) { |
---|
1689 | if (opt_lookahead) { |
---|
1690 | opt = opt_lookahead; |
---|
1691 | opt_lookahead = 0; |
---|
1692 | } else { |
---|
1693 | opt = get32(pimg->fh); |
---|
1694 | } |
---|
1695 | } else { |
---|
1696 | opt = GETC(pimg->fh); |
---|
1697 | } |
---|
1698 | |
---|
1699 | if (feof(pimg->fh)) { |
---|
1700 | img_errno = IMG_BADFORMAT; |
---|
1701 | return img_BAD; |
---|
1702 | } |
---|
1703 | if (ferror(pimg->fh)) { |
---|
1704 | img_errno = IMG_READERROR; |
---|
1705 | return img_BAD; |
---|
1706 | } |
---|
1707 | |
---|
1708 | switch (opt) { |
---|
1709 | case -1: case 0: |
---|
1710 | return img_STOP; /* end of data marker */ |
---|
1711 | case 1: |
---|
1712 | /* skip coordinates */ |
---|
1713 | if (!skip_coord(pimg->fh)) { |
---|
1714 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1715 | return img_BAD; |
---|
1716 | } |
---|
1717 | goto again; |
---|
1718 | case 2: case 3: { |
---|
1719 | size_t len; |
---|
1720 | result = img_LABEL; |
---|
1721 | if (!fgets(pimg->label_buf, pimg->buf_len, pimg->fh)) { |
---|
1722 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1723 | return img_BAD; |
---|
1724 | } |
---|
1725 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1726 | len = strlen(pimg->label); |
---|
1727 | if (len == 0 || pimg->label[len - 1] != '\n') { |
---|
1728 | img_errno = IMG_BADFORMAT; |
---|
1729 | return img_BAD; |
---|
1730 | } |
---|
1731 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
1732 | if (len == 1) goto again; |
---|
1733 | pimg->label[len - 1] = '\0'; |
---|
1734 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
1735 | if (opt == 2) goto done; |
---|
1736 | break; |
---|
1737 | } |
---|
1738 | case 6: case 7: { |
---|
1739 | long len; |
---|
1740 | result = img_LABEL; |
---|
1741 | |
---|
1742 | if (opt == 7) |
---|
1743 | pimg->flags = GETC(pimg->fh); |
---|
1744 | else |
---|
1745 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
1746 | |
---|
1747 | len = get32(pimg->fh); |
---|
1748 | |
---|
1749 | if (feof(pimg->fh)) { |
---|
1750 | img_errno = IMG_BADFORMAT; |
---|
1751 | return img_BAD; |
---|
1752 | } |
---|
1753 | if (ferror(pimg->fh)) { |
---|
1754 | img_errno = IMG_READERROR; |
---|
1755 | return img_BAD; |
---|
1756 | } |
---|
1757 | |
---|
1758 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
1759 | if (len == 0) goto again; |
---|
1760 | if (!check_label_space(pimg, len + 1)) { |
---|
1761 | img_errno = IMG_OUTOFMEMORY; |
---|
1762 | return img_BAD; |
---|
1763 | } |
---|
1764 | if (fread(pimg->label_buf, len, 1, pimg->fh) != 1) { |
---|
1765 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1766 | return img_BAD; |
---|
1767 | } |
---|
1768 | pimg->label_buf[len] = '\0'; |
---|
1769 | break; |
---|
1770 | } |
---|
1771 | case 4: |
---|
1772 | result = img_MOVE; |
---|
1773 | break; |
---|
1774 | case 5: |
---|
1775 | result = img_LINE; |
---|
1776 | break; |
---|
1777 | default: |
---|
1778 | switch ((int)opt & 0xc0) { |
---|
1779 | case 0x80: |
---|
1780 | pimg->flags = (int)opt & 0x3f; |
---|
1781 | result = img_LINE; |
---|
1782 | break; |
---|
1783 | case 0x40: { |
---|
1784 | char *q; |
---|
1785 | pimg->flags = (int)opt & 0x3f; |
---|
1786 | result = img_LABEL; |
---|
1787 | if (!fgets(pimg->label_buf, pimg->buf_len, pimg->fh)) { |
---|
1788 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1789 | return img_BAD; |
---|
1790 | } |
---|
1791 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
1792 | /* Ignore empty-labels in some .3d files (caused by a bug) */ |
---|
1793 | if (q == pimg->label_buf) goto again; |
---|
1794 | if (*q != '\n') { |
---|
1795 | img_errno = IMG_BADFORMAT; |
---|
1796 | return img_BAD; |
---|
1797 | } |
---|
1798 | *q = '\0'; |
---|
1799 | break; |
---|
1800 | } |
---|
1801 | default: |
---|
1802 | img_errno = IMG_BADFORMAT; |
---|
1803 | return img_BAD; |
---|
1804 | } |
---|
1805 | break; |
---|
1806 | } |
---|
1807 | |
---|
1808 | if (!read_coord(pimg->fh, &pt)) return img_BAD; |
---|
1809 | |
---|
1810 | if (result == img_LABEL && !stn_included(pimg)) { |
---|
1811 | goto again; |
---|
1812 | } |
---|
1813 | |
---|
1814 | done: |
---|
1815 | *p = pt; |
---|
1816 | |
---|
1817 | if (result == img_MOVE && pimg->version == 1) { |
---|
1818 | /* peek at next code and see if it's an old-style label */ |
---|
1819 | opt_lookahead = get32(pimg->fh); |
---|
1820 | |
---|
1821 | if (feof(pimg->fh)) { |
---|
1822 | img_errno = IMG_BADFORMAT; |
---|
1823 | return img_BAD; |
---|
1824 | } |
---|
1825 | if (ferror(pimg->fh)) { |
---|
1826 | img_errno = IMG_READERROR; |
---|
1827 | return img_BAD; |
---|
1828 | } |
---|
1829 | |
---|
1830 | if (opt_lookahead == 2) return img_read_item_ancient(pimg, p); |
---|
1831 | } |
---|
1832 | |
---|
1833 | return result; |
---|
1834 | } |
---|
1835 | |
---|
1836 | static int |
---|
1837 | img_read_item_ascii_wrapper(img *pimg, img_point *p) |
---|
1838 | { |
---|
1839 | /* We need to set the default locale for fscanf() to work on |
---|
1840 | * numbers with "." as decimal point. */ |
---|
1841 | int result; |
---|
1842 | char * current_locale = my_strdup(setlocale(LC_NUMERIC, NULL)); |
---|
1843 | setlocale(LC_NUMERIC, "C"); |
---|
1844 | result = img_read_item_ascii(pimg, p); |
---|
1845 | setlocale(LC_NUMERIC, current_locale); |
---|
1846 | free(current_locale); |
---|
1847 | return result; |
---|
1848 | } |
---|
1849 | |
---|
1850 | /* Handle all ASCII formats. */ |
---|
1851 | static int |
---|
1852 | img_read_item_ascii(img *pimg, img_point *p) |
---|
1853 | { |
---|
1854 | int result; |
---|
1855 | pimg->label = pimg->label_buf; |
---|
1856 | if (pimg->version == 0) { |
---|
1857 | ascii_again: |
---|
1858 | pimg->label[0] = '\0'; |
---|
1859 | if (feof(pimg->fh)) return img_STOP; |
---|
1860 | if (pimg->pending) { |
---|
1861 | pimg->pending = 0; |
---|
1862 | result = img_LINE; |
---|
1863 | } else { |
---|
1864 | char cmd[7]; |
---|
1865 | /* Stop if nothing found */ |
---|
1866 | if (fscanf(pimg->fh, "%6s", cmd) < 1) return img_STOP; |
---|
1867 | if (strcmp(cmd, "move") == 0) |
---|
1868 | result = img_MOVE; |
---|
1869 | else if (strcmp(cmd, "draw") == 0) |
---|
1870 | result = img_LINE; |
---|
1871 | else if (strcmp(cmd, "line") == 0) { |
---|
1872 | /* set flag to indicate to process second triplet as LINE */ |
---|
1873 | pimg->pending = 1; |
---|
1874 | result = img_MOVE; |
---|
1875 | } else if (strcmp(cmd, "cross") == 0) { |
---|
1876 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
1877 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1878 | return img_BAD; |
---|
1879 | } |
---|
1880 | goto ascii_again; |
---|
1881 | } else if (strcmp(cmd, "name") == 0) { |
---|
1882 | size_t off = 0; |
---|
1883 | int ch = GETC(pimg->fh); |
---|
1884 | if (ch == ' ') ch = GETC(pimg->fh); |
---|
1885 | while (ch != ' ') { |
---|
1886 | if (ch == '\n' || ch == EOF) { |
---|
1887 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
1888 | return img_BAD; |
---|
1889 | } |
---|
1890 | if (off == pimg->buf_len) { |
---|
1891 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
1892 | img_errno = IMG_OUTOFMEMORY; |
---|
1893 | return img_BAD; |
---|
1894 | } |
---|
1895 | } |
---|
1896 | pimg->label_buf[off++] = ch; |
---|
1897 | ch = GETC(pimg->fh); |
---|
1898 | } |
---|
1899 | pimg->label_buf[off] = '\0'; |
---|
1900 | |
---|
1901 | pimg->label = pimg->label_buf; |
---|
1902 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1903 | |
---|
1904 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1905 | |
---|
1906 | result = img_LABEL; |
---|
1907 | } else { |
---|
1908 | img_errno = IMG_BADFORMAT; |
---|
1909 | return img_BAD; /* unknown keyword */ |
---|
1910 | } |
---|
1911 | } |
---|
1912 | |
---|
1913 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
1914 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
1915 | return img_BAD; |
---|
1916 | } |
---|
1917 | |
---|
1918 | if (result == img_LABEL && !stn_included(pimg)) { |
---|
1919 | goto ascii_again; |
---|
1920 | } |
---|
1921 | |
---|
1922 | return result; |
---|
1923 | } else if (pimg->version == VERSION_SURVEX_POS) { |
---|
1924 | /* Survex .pos file */ |
---|
1925 | int ch; |
---|
1926 | size_t off; |
---|
1927 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1928 | againpos: |
---|
1929 | while (fscanf(pimg->fh, "(%lf,%lf,%lf )", &p->x, &p->y, &p->z) != 3) { |
---|
1930 | if (ferror(pimg->fh)) { |
---|
1931 | img_errno = IMG_READERROR; |
---|
1932 | return img_BAD; |
---|
1933 | } |
---|
1934 | if (feof(pimg->fh)) return img_STOP; |
---|
1935 | if (pimg->pending) { |
---|
1936 | img_errno = IMG_BADFORMAT; |
---|
1937 | return img_BAD; |
---|
1938 | } |
---|
1939 | pimg->pending = 1; |
---|
1940 | /* ignore rest of line */ |
---|
1941 | do { |
---|
1942 | ch = GETC(pimg->fh); |
---|
1943 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
1944 | } |
---|
1945 | |
---|
1946 | pimg->label_buf[0] = '\0'; |
---|
1947 | do { |
---|
1948 | ch = GETC(pimg->fh); |
---|
1949 | } while (ch == ' ' || ch == '\t'); |
---|
1950 | if (ch == '\n' || ch == EOF) { |
---|
1951 | /* If there's no label, set img_SFLAG_ANON. */ |
---|
1952 | pimg->flags |= img_SFLAG_ANON; |
---|
1953 | return img_LABEL; |
---|
1954 | } |
---|
1955 | pimg->label_buf[0] = ch; |
---|
1956 | off = 1; |
---|
1957 | while (!feof(pimg->fh)) { |
---|
1958 | if (!fgets(pimg->label_buf + off, pimg->buf_len - off, pimg->fh)) { |
---|
1959 | img_errno = IMG_READERROR; |
---|
1960 | return img_BAD; |
---|
1961 | } |
---|
1962 | |
---|
1963 | off += strlen(pimg->label_buf + off); |
---|
1964 | if (off && pimg->label_buf[off - 1] == '\n') { |
---|
1965 | pimg->label_buf[off - 1] = '\0'; |
---|
1966 | break; |
---|
1967 | } |
---|
1968 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
1969 | img_errno = IMG_OUTOFMEMORY; |
---|
1970 | return img_BAD; |
---|
1971 | } |
---|
1972 | } |
---|
1973 | |
---|
1974 | pimg->label = pimg->label_buf; |
---|
1975 | |
---|
1976 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1977 | |
---|
1978 | if (!stn_included(pimg)) goto againpos; |
---|
1979 | |
---|
1980 | return img_LABEL; |
---|
1981 | } else if (pimg->version == VERSION_COMPASS_PLT) { |
---|
1982 | /* Compass .plt file */ |
---|
1983 | if (pimg->pending > 0) { |
---|
1984 | /* -1 signals we've entered the first survey we want to |
---|
1985 | * read, and need to fudge lots if the first action is 'D'... |
---|
1986 | */ |
---|
1987 | /* pending MOVE or LINE */ |
---|
1988 | int r = pimg->pending - 4; |
---|
1989 | pimg->pending = 0; |
---|
1990 | pimg->flags = 0; |
---|
1991 | pimg->label[pimg->label_len] = '\0'; |
---|
1992 | return r; |
---|
1993 | } |
---|
1994 | |
---|
1995 | while (1) { |
---|
1996 | char *line; |
---|
1997 | char *q; |
---|
1998 | size_t len = 0; |
---|
1999 | int ch = GETC(pimg->fh); |
---|
2000 | |
---|
2001 | switch (ch) { |
---|
2002 | case '\x1a': case EOF: /* Don't insist on ^Z at end of file */ |
---|
2003 | return img_STOP; |
---|
2004 | case 'X': case 'F': case 'S': |
---|
2005 | /* bounding boX (marks end of survey), Feature survey, or |
---|
2006 | * new Section - skip to next survey */ |
---|
2007 | if (pimg->survey) return img_STOP; |
---|
2008 | skip_to_N: |
---|
2009 | while (1) { |
---|
2010 | do { |
---|
2011 | ch = GETC(pimg->fh); |
---|
2012 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
2013 | while (ch == '\n' || ch == '\r') ch = GETC(pimg->fh); |
---|
2014 | if (ch == 'N') break; |
---|
2015 | if (ch == '\x1a' || ch == EOF) return img_STOP; |
---|
2016 | } |
---|
2017 | /* FALLTHRU */ |
---|
2018 | case 'N': |
---|
2019 | line = getline_alloc(pimg->fh); |
---|
2020 | if (!line) { |
---|
2021 | img_errno = IMG_OUTOFMEMORY; |
---|
2022 | return img_BAD; |
---|
2023 | } |
---|
2024 | while (line[len] > 32) ++len; |
---|
2025 | if (pimg->label_len == 0) pimg->pending = -1; |
---|
2026 | if (!check_label_space(pimg, len + 1)) { |
---|
2027 | osfree(line); |
---|
2028 | img_errno = IMG_OUTOFMEMORY; |
---|
2029 | return img_BAD; |
---|
2030 | } |
---|
2031 | pimg->label_len = len; |
---|
2032 | pimg->label = pimg->label_buf; |
---|
2033 | memcpy(pimg->label, line, len); |
---|
2034 | pimg->label[len] = '\0'; |
---|
2035 | osfree(line); |
---|
2036 | break; |
---|
2037 | case 'M': case 'D': { |
---|
2038 | /* Move or Draw */ |
---|
2039 | long fpos = -1; |
---|
2040 | if (pimg->survey && pimg->label_len == 0) { |
---|
2041 | /* We're only holding onto this line in case the first line |
---|
2042 | * of the 'N' is a 'D', so skip it for now... |
---|
2043 | */ |
---|
2044 | goto skip_to_N; |
---|
2045 | } |
---|
2046 | if (ch == 'D' && pimg->pending == -1) { |
---|
2047 | if (pimg->survey) { |
---|
2048 | fpos = ftell(pimg->fh) - 1; |
---|
2049 | fseek(pimg->fh, pimg->start, SEEK_SET); |
---|
2050 | ch = GETC(pimg->fh); |
---|
2051 | pimg->pending = 0; |
---|
2052 | } else { |
---|
2053 | /* If a file actually has a 'D' before any 'M', then |
---|
2054 | * pretend the 'D' is an 'M' - one of the examples |
---|
2055 | * in the docs was like this! */ |
---|
2056 | ch = 'M'; |
---|
2057 | } |
---|
2058 | } |
---|
2059 | line = getline_alloc(pimg->fh); |
---|
2060 | if (!line) { |
---|
2061 | img_errno = IMG_OUTOFMEMORY; |
---|
2062 | return img_BAD; |
---|
2063 | } |
---|
2064 | /* Compass stores coordinates as North, East, Up = (y,x,z)! */ |
---|
2065 | if (sscanf(line, "%lf%lf%lf", &p->y, &p->x, &p->z) != 3) { |
---|
2066 | osfree(line); |
---|
2067 | if (ferror(pimg->fh)) { |
---|
2068 | img_errno = IMG_READERROR; |
---|
2069 | } else { |
---|
2070 | img_errno = IMG_BADFORMAT; |
---|
2071 | } |
---|
2072 | return img_BAD; |
---|
2073 | } |
---|
2074 | p->x *= METRES_PER_FOOT; |
---|
2075 | p->y *= METRES_PER_FOOT; |
---|
2076 | p->z *= METRES_PER_FOOT; |
---|
2077 | q = strchr(line, 'S'); |
---|
2078 | if (!q) { |
---|
2079 | osfree(line); |
---|
2080 | img_errno = IMG_BADFORMAT; |
---|
2081 | return img_BAD; |
---|
2082 | } |
---|
2083 | ++q; |
---|
2084 | len = 0; |
---|
2085 | while (q[len] > ' ') ++len; |
---|
2086 | q[len] = '\0'; |
---|
2087 | len += 2; /* ' ' and '\0' */ |
---|
2088 | if (!check_label_space(pimg, pimg->label_len + len)) { |
---|
2089 | img_errno = IMG_OUTOFMEMORY; |
---|
2090 | return img_BAD; |
---|
2091 | } |
---|
2092 | pimg->label = pimg->label_buf; |
---|
2093 | if (pimg->label_len) { |
---|
2094 | pimg->label[pimg->label_len] = ' '; |
---|
2095 | memcpy(pimg->label + pimg->label_len + 1, q, len - 1); |
---|
2096 | } else { |
---|
2097 | memcpy(pimg->label, q, len - 1); |
---|
2098 | } |
---|
2099 | q += len - 1; |
---|
2100 | /* Now read LRUD. Technically, this is optional but virtually |
---|
2101 | * all PLT files have it (with dummy negative values if no LRUD |
---|
2102 | * was measured) and some versions of Compass can't read PLT |
---|
2103 | * files without it! |
---|
2104 | */ |
---|
2105 | while (*q && *q <= ' ') q++; |
---|
2106 | if (*q == 'P') { |
---|
2107 | if (sscanf(q + 1, "%lf%lf%lf%lf", |
---|
2108 | &pimg->l, &pimg->r, &pimg->u, &pimg->d) != 4) { |
---|
2109 | osfree(line); |
---|
2110 | if (ferror(pimg->fh)) { |
---|
2111 | img_errno = IMG_READERROR; |
---|
2112 | } else { |
---|
2113 | img_errno = IMG_BADFORMAT; |
---|
2114 | } |
---|
2115 | return img_BAD; |
---|
2116 | } |
---|
2117 | pimg->l *= METRES_PER_FOOT; |
---|
2118 | pimg->r *= METRES_PER_FOOT; |
---|
2119 | pimg->u *= METRES_PER_FOOT; |
---|
2120 | pimg->d *= METRES_PER_FOOT; |
---|
2121 | } else { |
---|
2122 | pimg->l = pimg->r = pimg->u = pimg->d = -1; |
---|
2123 | } |
---|
2124 | osfree(line); |
---|
2125 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
2126 | if (fpos != -1) { |
---|
2127 | fseek(pimg->fh, fpos, SEEK_SET); |
---|
2128 | } else { |
---|
2129 | pimg->pending = (ch == 'M' ? img_MOVE : img_LINE) + 4; |
---|
2130 | } |
---|
2131 | return img_LABEL; |
---|
2132 | } |
---|
2133 | default: |
---|
2134 | img_errno = IMG_BADFORMAT; |
---|
2135 | return img_BAD; |
---|
2136 | } |
---|
2137 | } |
---|
2138 | } else { |
---|
2139 | /* CMAP .xyz file */ |
---|
2140 | char *line = NULL; |
---|
2141 | char *q; |
---|
2142 | size_t len; |
---|
2143 | |
---|
2144 | if (pimg->pending) { |
---|
2145 | /* pending MOVE or LINE or LABEL or STOP */ |
---|
2146 | int r = pimg->pending - 4; |
---|
2147 | /* Set label to empty - don't use "" as we adjust label relative |
---|
2148 | * to label_buf when label_buf is reallocated. */ |
---|
2149 | pimg->label = pimg->label_buf + strlen(pimg->label_buf); |
---|
2150 | pimg->flags = 0; |
---|
2151 | if (r == img_LABEL) { |
---|
2152 | /* nasty magic */ |
---|
2153 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
2154 | subtract_xyz_shot_deltas(p, pimg->label_buf + 16); |
---|
2155 | pimg->pending = img_STOP + 4; |
---|
2156 | return img_MOVE; |
---|
2157 | } |
---|
2158 | |
---|
2159 | pimg->pending = 0; |
---|
2160 | |
---|
2161 | if (r == img_STOP) { |
---|
2162 | /* nasty magic */ |
---|
2163 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
2164 | return img_LINE; |
---|
2165 | } |
---|
2166 | |
---|
2167 | return r; |
---|
2168 | } |
---|
2169 | |
---|
2170 | pimg->label = pimg->label_buf; |
---|
2171 | do { |
---|
2172 | osfree(line); |
---|
2173 | if (feof(pimg->fh)) return img_STOP; |
---|
2174 | line = getline_alloc(pimg->fh); |
---|
2175 | if (!line) { |
---|
2176 | img_errno = IMG_OUTOFMEMORY; |
---|
2177 | return img_BAD; |
---|
2178 | } |
---|
2179 | } while (line[0] == ' ' || line[0] == '\0'); |
---|
2180 | if (line[0] == '\x1a') return img_STOP; |
---|
2181 | |
---|
2182 | len = strlen(line); |
---|
2183 | if (pimg->version == VERSION_CMAP_STATION) { |
---|
2184 | /* station variant */ |
---|
2185 | if (len < 37) { |
---|
2186 | osfree(line); |
---|
2187 | img_errno = IMG_BADFORMAT; |
---|
2188 | return img_BAD; |
---|
2189 | } |
---|
2190 | memcpy(pimg->label, line, 6); |
---|
2191 | q = (char *)memchr(pimg->label, ' ', 6); |
---|
2192 | if (!q) q = pimg->label + 6; |
---|
2193 | *q = '\0'; |
---|
2194 | |
---|
2195 | read_xyz_station_coords(p, line); |
---|
2196 | |
---|
2197 | /* FIXME: look at prev for lines (line + 32, 5) */ |
---|
2198 | /* FIXME: duplicate stations... */ |
---|
2199 | return img_LABEL; |
---|
2200 | } else { |
---|
2201 | /* Shot variant (VERSION_CMAP_SHOT) */ |
---|
2202 | char old[8], new_[8]; |
---|
2203 | if (len < 61) { |
---|
2204 | osfree(line); |
---|
2205 | img_errno = IMG_BADFORMAT; |
---|
2206 | return img_BAD; |
---|
2207 | } |
---|
2208 | |
---|
2209 | memcpy(old, line, 7); |
---|
2210 | q = (char *)memchr(old, ' ', 7); |
---|
2211 | if (!q) q = old + 7; |
---|
2212 | *q = '\0'; |
---|
2213 | |
---|
2214 | memcpy(new_, line + 7, 7); |
---|
2215 | q = (char *)memchr(new_, ' ', 7); |
---|
2216 | if (!q) q = new_ + 7; |
---|
2217 | *q = '\0'; |
---|
2218 | |
---|
2219 | pimg->flags = img_SFLAG_UNDERGROUND; |
---|
2220 | |
---|
2221 | if (strcmp(old, new_) == 0) { |
---|
2222 | pimg->pending = img_MOVE + 4; |
---|
2223 | read_xyz_shot_coords(p, line); |
---|
2224 | strcpy(pimg->label, new_); |
---|
2225 | osfree(line); |
---|
2226 | return img_LABEL; |
---|
2227 | } |
---|
2228 | |
---|
2229 | if (strcmp(old, pimg->label) == 0) { |
---|
2230 | pimg->pending = img_LINE + 4; |
---|
2231 | read_xyz_shot_coords(p, line); |
---|
2232 | strcpy(pimg->label, new_); |
---|
2233 | osfree(line); |
---|
2234 | return img_LABEL; |
---|
2235 | } |
---|
2236 | |
---|
2237 | pimg->pending = img_LABEL + 4; |
---|
2238 | read_xyz_shot_coords(p, line); |
---|
2239 | strcpy(pimg->label, new_); |
---|
2240 | memcpy(pimg->label + 16, line, 70); |
---|
2241 | |
---|
2242 | osfree(line); |
---|
2243 | return img_LABEL; |
---|
2244 | } |
---|
2245 | } |
---|
2246 | } |
---|
2247 | |
---|
2248 | static void |
---|
2249 | write_coord(FILE *fh, double x, double y, double z) |
---|
2250 | { |
---|
2251 | SVX_ASSERT(fh); |
---|
2252 | /* Output in cm */ |
---|
2253 | static INT32_T X_, Y_, Z_; |
---|
2254 | INT32_T X = my_lround(x * 100.0); |
---|
2255 | INT32_T Y = my_lround(y * 100.0); |
---|
2256 | INT32_T Z = my_lround(z * 100.0); |
---|
2257 | |
---|
2258 | X_ -= X; |
---|
2259 | Y_ -= Y; |
---|
2260 | Z_ -= Z; |
---|
2261 | put32(X, fh); |
---|
2262 | put32(Y, fh); |
---|
2263 | put32(Z, fh); |
---|
2264 | X_ = X; Y_ = Y; Z_ = Z; |
---|
2265 | } |
---|
2266 | |
---|
2267 | static int |
---|
2268 | write_v3label(img *pimg, int opt, const char *s) |
---|
2269 | { |
---|
2270 | size_t len, n, dot; |
---|
2271 | |
---|
2272 | /* find length of common prefix */ |
---|
2273 | dot = 0; |
---|
2274 | for (len = 0; s[len] == pimg->label_buf[len] && s[len] != '\0'; len++) { |
---|
2275 | if (s[len] == '.') dot = len + 1; |
---|
2276 | } |
---|
2277 | |
---|
2278 | SVX_ASSERT(len <= pimg->label_len); |
---|
2279 | n = pimg->label_len - len; |
---|
2280 | if (len == 0) { |
---|
2281 | if (pimg->label_len) PUTC(0, pimg->fh); |
---|
2282 | } else if (n <= 16) { |
---|
2283 | if (n) PUTC(n + 15, pimg->fh); |
---|
2284 | } else if (dot == 0) { |
---|
2285 | if (pimg->label_len) PUTC(0, pimg->fh); |
---|
2286 | len = 0; |
---|
2287 | } else { |
---|
2288 | const char *p = pimg->label_buf + dot; |
---|
2289 | n = 1; |
---|
2290 | for (len = pimg->label_len - dot - 17; len; len--) { |
---|
2291 | if (*p++ == '.') n++; |
---|
2292 | } |
---|
2293 | if (n <= 14) { |
---|
2294 | PUTC(n, pimg->fh); |
---|
2295 | len = dot; |
---|
2296 | } else { |
---|
2297 | if (pimg->label_len) PUTC(0, pimg->fh); |
---|
2298 | len = 0; |
---|
2299 | } |
---|
2300 | } |
---|
2301 | |
---|
2302 | n = strlen(s + len); |
---|
2303 | PUTC(opt, pimg->fh); |
---|
2304 | if (n < 0xfe) { |
---|
2305 | PUTC(n, pimg->fh); |
---|
2306 | } else if (n < 0xffff + 0xfe) { |
---|
2307 | PUTC(0xfe, pimg->fh); |
---|
2308 | put16((short)(n - 0xfe), pimg->fh); |
---|
2309 | } else { |
---|
2310 | PUTC(0xff, pimg->fh); |
---|
2311 | put32(n, pimg->fh); |
---|
2312 | } |
---|
2313 | fwrite(s + len, n, 1, pimg->fh); |
---|
2314 | |
---|
2315 | n += len; |
---|
2316 | pimg->label_len = n; |
---|
2317 | if (!check_label_space(pimg, n + 1)) |
---|
2318 | return 0; /* FIXME: distinguish out of memory... */ |
---|
2319 | memcpy(pimg->label_buf + len, s + len, n - len + 1); |
---|
2320 | |
---|
2321 | return !ferror(pimg->fh); |
---|
2322 | } |
---|
2323 | |
---|
2324 | static int |
---|
2325 | write_v8label(img *pimg, int opt, int common_flag, size_t common_val, |
---|
2326 | const char *s) |
---|
2327 | { |
---|
2328 | size_t len, del, add; |
---|
2329 | |
---|
2330 | /* find length of common prefix */ |
---|
2331 | for (len = 0; s[len] == pimg->label_buf[len] && s[len] != '\0'; len++) { |
---|
2332 | } |
---|
2333 | |
---|
2334 | SVX_ASSERT(len <= pimg->label_len); |
---|
2335 | del = pimg->label_len - len; |
---|
2336 | add = strlen(s + len); |
---|
2337 | |
---|
2338 | if (add == common_val && del == common_val) { |
---|
2339 | PUTC(opt | common_flag, pimg->fh); |
---|
2340 | } else { |
---|
2341 | PUTC(opt, pimg->fh); |
---|
2342 | if (del <= 15 && add <= 15 && (del || add)) { |
---|
2343 | PUTC((del << 4) | add, pimg->fh); |
---|
2344 | } else { |
---|
2345 | PUTC(0x00, pimg->fh); |
---|
2346 | if (del < 0xff) { |
---|
2347 | PUTC(del, pimg->fh); |
---|
2348 | } else { |
---|
2349 | PUTC(0xff, pimg->fh); |
---|
2350 | put32(del, pimg->fh); |
---|
2351 | } |
---|
2352 | if (add < 0xff) { |
---|
2353 | PUTC(add, pimg->fh); |
---|
2354 | } else { |
---|
2355 | PUTC(0xff, pimg->fh); |
---|
2356 | put32(add, pimg->fh); |
---|
2357 | } |
---|
2358 | } |
---|
2359 | } |
---|
2360 | |
---|
2361 | if (add) |
---|
2362 | fwrite(s + len, add, 1, pimg->fh); |
---|
2363 | |
---|
2364 | pimg->label_len = len + add; |
---|
2365 | if (add > del && !check_label_space(pimg, pimg->label_len + 1)) |
---|
2366 | return 0; /* FIXME: distinguish out of memory... */ |
---|
2367 | |
---|
2368 | memcpy(pimg->label_buf + len, s + len, add + 1); |
---|
2369 | |
---|
2370 | return !ferror(pimg->fh); |
---|
2371 | } |
---|
2372 | |
---|
2373 | static void |
---|
2374 | img_write_item_date_new(img *pimg) |
---|
2375 | { |
---|
2376 | int same, unset; |
---|
2377 | /* Only write dates when they've changed. */ |
---|
2378 | #if IMG_API_VERSION == 0 |
---|
2379 | if (pimg->date1 == pimg->olddate1 && pimg->date2 == pimg->olddate2) |
---|
2380 | return; |
---|
2381 | |
---|
2382 | same = (pimg->date1 == pimg->date2); |
---|
2383 | unset = (pimg->date1 == 0); |
---|
2384 | #else /* IMG_API_VERSION == 1 */ |
---|
2385 | if (pimg->days1 == pimg->olddays1 && pimg->days2 == pimg->olddays2) |
---|
2386 | return; |
---|
2387 | |
---|
2388 | same = (pimg->days1 == pimg->days2); |
---|
2389 | unset = (pimg->days1 == -1); |
---|
2390 | #endif |
---|
2391 | |
---|
2392 | if (same) { |
---|
2393 | if (unset) { |
---|
2394 | PUTC(0x10, pimg->fh); |
---|
2395 | } else { |
---|
2396 | PUTC(0x11, pimg->fh); |
---|
2397 | #if IMG_API_VERSION == 0 |
---|
2398 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
2399 | #else /* IMG_API_VERSION == 1 */ |
---|
2400 | put16(pimg->days1, pimg->fh); |
---|
2401 | #endif |
---|
2402 | } |
---|
2403 | } else { |
---|
2404 | #if IMG_API_VERSION == 0 |
---|
2405 | int diff = (pimg->date2 - pimg->date1) / 86400; |
---|
2406 | if (diff > 0 && diff <= 256) { |
---|
2407 | PUTC(0x12, pimg->fh); |
---|
2408 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
2409 | PUTC(diff - 1, pimg->fh); |
---|
2410 | } else { |
---|
2411 | PUTC(0x13, pimg->fh); |
---|
2412 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
2413 | put16(pimg->date2 / 86400 + 25567, pimg->fh); |
---|
2414 | } |
---|
2415 | #else /* IMG_API_VERSION == 1 */ |
---|
2416 | int diff = pimg->days2 - pimg->days1; |
---|
2417 | if (diff > 0 && diff <= 256) { |
---|
2418 | PUTC(0x12, pimg->fh); |
---|
2419 | put16(pimg->days1, pimg->fh); |
---|
2420 | PUTC(diff - 1, pimg->fh); |
---|
2421 | } else { |
---|
2422 | PUTC(0x13, pimg->fh); |
---|
2423 | put16(pimg->days1, pimg->fh); |
---|
2424 | put16(pimg->days2, pimg->fh); |
---|
2425 | } |
---|
2426 | #endif |
---|
2427 | } |
---|
2428 | #if IMG_API_VERSION == 0 |
---|
2429 | pimg->olddate1 = pimg->date1; |
---|
2430 | pimg->olddate2 = pimg->date2; |
---|
2431 | #else /* IMG_API_VERSION == 1 */ |
---|
2432 | pimg->olddays1 = pimg->days1; |
---|
2433 | pimg->olddays2 = pimg->days2; |
---|
2434 | #endif |
---|
2435 | } |
---|
2436 | |
---|
2437 | static void |
---|
2438 | img_write_item_date(img *pimg) |
---|
2439 | { |
---|
2440 | int same, unset; |
---|
2441 | /* Only write dates when they've changed. */ |
---|
2442 | #if IMG_API_VERSION == 0 |
---|
2443 | if (pimg->date1 == pimg->olddate1 && pimg->date2 == pimg->olddate2) |
---|
2444 | return; |
---|
2445 | |
---|
2446 | same = (pimg->date1 == pimg->date2); |
---|
2447 | unset = (pimg->date1 == 0); |
---|
2448 | #else /* IMG_API_VERSION == 1 */ |
---|
2449 | if (pimg->days1 == pimg->olddays1 && pimg->days2 == pimg->olddays2) |
---|
2450 | return; |
---|
2451 | |
---|
2452 | same = (pimg->days1 == pimg->days2); |
---|
2453 | unset = (pimg->days1 == -1); |
---|
2454 | #endif |
---|
2455 | |
---|
2456 | if (same) { |
---|
2457 | if (img_output_version < 7) { |
---|
2458 | PUTC(0x20, pimg->fh); |
---|
2459 | #if IMG_API_VERSION == 0 |
---|
2460 | put32(pimg->date1, pimg->fh); |
---|
2461 | #else /* IMG_API_VERSION == 1 */ |
---|
2462 | put32((pimg->days1 - 25567) * 86400, pimg->fh); |
---|
2463 | #endif |
---|
2464 | } else { |
---|
2465 | if (unset) { |
---|
2466 | PUTC(0x24, pimg->fh); |
---|
2467 | } else { |
---|
2468 | PUTC(0x20, pimg->fh); |
---|
2469 | #if IMG_API_VERSION == 0 |
---|
2470 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
2471 | #else /* IMG_API_VERSION == 1 */ |
---|
2472 | put16(pimg->days1, pimg->fh); |
---|
2473 | #endif |
---|
2474 | } |
---|
2475 | } |
---|
2476 | } else { |
---|
2477 | if (img_output_version < 7) { |
---|
2478 | PUTC(0x21, pimg->fh); |
---|
2479 | #if IMG_API_VERSION == 0 |
---|
2480 | put32(pimg->date1, pimg->fh); |
---|
2481 | put32(pimg->date2, pimg->fh); |
---|
2482 | #else /* IMG_API_VERSION == 1 */ |
---|
2483 | put32((pimg->days1 - 25567) * 86400, pimg->fh); |
---|
2484 | put32((pimg->days2 - 25567) * 86400, pimg->fh); |
---|
2485 | #endif |
---|
2486 | } else { |
---|
2487 | #if IMG_API_VERSION == 0 |
---|
2488 | int diff = (pimg->date2 - pimg->date1) / 86400; |
---|
2489 | if (diff > 0 && diff <= 256) { |
---|
2490 | PUTC(0x21, pimg->fh); |
---|
2491 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
2492 | PUTC(diff - 1, pimg->fh); |
---|
2493 | } else { |
---|
2494 | PUTC(0x23, pimg->fh); |
---|
2495 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
2496 | put16(pimg->date2 / 86400 + 25567, pimg->fh); |
---|
2497 | } |
---|
2498 | #else /* IMG_API_VERSION == 1 */ |
---|
2499 | int diff = pimg->days2 - pimg->days1; |
---|
2500 | if (diff > 0 && diff <= 256) { |
---|
2501 | PUTC(0x21, pimg->fh); |
---|
2502 | put16(pimg->days1, pimg->fh); |
---|
2503 | PUTC(diff - 1, pimg->fh); |
---|
2504 | } else { |
---|
2505 | PUTC(0x23, pimg->fh); |
---|
2506 | put16(pimg->days1, pimg->fh); |
---|
2507 | put16(pimg->days2, pimg->fh); |
---|
2508 | } |
---|
2509 | #endif |
---|
2510 | } |
---|
2511 | } |
---|
2512 | #if IMG_API_VERSION == 0 |
---|
2513 | pimg->olddate1 = pimg->date1; |
---|
2514 | pimg->olddate2 = pimg->date2; |
---|
2515 | #else /* IMG_API_VERSION == 1 */ |
---|
2516 | pimg->olddays1 = pimg->days1; |
---|
2517 | pimg->olddays2 = pimg->days2; |
---|
2518 | #endif |
---|
2519 | } |
---|
2520 | |
---|
2521 | static void |
---|
2522 | img_write_item_new(img *pimg, int code, int flags, const char *s, |
---|
2523 | double x, double y, double z); |
---|
2524 | static void |
---|
2525 | img_write_item_v3to7(img *pimg, int code, int flags, const char *s, |
---|
2526 | double x, double y, double z); |
---|
2527 | static void |
---|
2528 | img_write_item_ancient(img *pimg, int code, int flags, const char *s, |
---|
2529 | double x, double y, double z); |
---|
2530 | |
---|
2531 | void |
---|
2532 | img_write_item(img *pimg, int code, int flags, const char *s, |
---|
2533 | double x, double y, double z) |
---|
2534 | { |
---|
2535 | if (!pimg) return; |
---|
2536 | if (pimg->version >= 8) { |
---|
2537 | img_write_item_new(pimg, code, flags, s, x, y, z); |
---|
2538 | } else if (pimg->version >= 3) { |
---|
2539 | img_write_item_v3to7(pimg, code, flags, s, x, y, z); |
---|
2540 | } else { |
---|
2541 | img_write_item_ancient(pimg, code, flags, s, x, y, z); |
---|
2542 | } |
---|
2543 | } |
---|
2544 | |
---|
2545 | static void |
---|
2546 | img_write_item_new(img *pimg, int code, int flags, const char *s, |
---|
2547 | double x, double y, double z) |
---|
2548 | { |
---|
2549 | switch (code) { |
---|
2550 | case img_LABEL: |
---|
2551 | write_v8label(pimg, 0x80 | flags, 0, -1, s); |
---|
2552 | break; |
---|
2553 | case img_XSECT: { |
---|
2554 | INT32_T l, r, u, d, max_dim; |
---|
2555 | img_write_item_date_new(pimg); |
---|
2556 | l = (INT32_T)my_lround(pimg->l * 100.0); |
---|
2557 | r = (INT32_T)my_lround(pimg->r * 100.0); |
---|
2558 | u = (INT32_T)my_lround(pimg->u * 100.0); |
---|
2559 | d = (INT32_T)my_lround(pimg->d * 100.0); |
---|
2560 | if (l < 0) l = -1; |
---|
2561 | if (r < 0) r = -1; |
---|
2562 | if (u < 0) u = -1; |
---|
2563 | if (d < 0) d = -1; |
---|
2564 | max_dim = max(max(l, r), max(u, d)); |
---|
2565 | flags = (flags & img_XFLAG_END) ? 1 : 0; |
---|
2566 | if (max_dim >= 32768) flags |= 2; |
---|
2567 | write_v8label(pimg, 0x30 | flags, 0, -1, s); |
---|
2568 | if (flags & 2) { |
---|
2569 | /* Big passage! Need to use 4 bytes. */ |
---|
2570 | put32(l, pimg->fh); |
---|
2571 | put32(r, pimg->fh); |
---|
2572 | put32(u, pimg->fh); |
---|
2573 | put32(d, pimg->fh); |
---|
2574 | } else { |
---|
2575 | put16(l, pimg->fh); |
---|
2576 | put16(r, pimg->fh); |
---|
2577 | put16(u, pimg->fh); |
---|
2578 | put16(d, pimg->fh); |
---|
2579 | } |
---|
2580 | return; |
---|
2581 | } |
---|
2582 | case img_MOVE: |
---|
2583 | PUTC(15, pimg->fh); |
---|
2584 | break; |
---|
2585 | case img_LINE: |
---|
2586 | img_write_item_date_new(pimg); |
---|
2587 | if (pimg->style != pimg->oldstyle) { |
---|
2588 | switch (pimg->style) { |
---|
2589 | case img_STYLE_NORMAL: |
---|
2590 | case img_STYLE_DIVING: |
---|
2591 | case img_STYLE_CARTESIAN: |
---|
2592 | case img_STYLE_CYLPOLAR: |
---|
2593 | case img_STYLE_NOSURVEY: |
---|
2594 | PUTC(pimg->style, pimg->fh); |
---|
2595 | break; |
---|
2596 | } |
---|
2597 | pimg->oldstyle = pimg->style; |
---|
2598 | } |
---|
2599 | write_v8label(pimg, 0x40 | flags, 0x20, 0x00, s ? s : ""); |
---|
2600 | break; |
---|
2601 | default: /* ignore for now */ |
---|
2602 | return; |
---|
2603 | } |
---|
2604 | write_coord(pimg->fh, x, y, z); |
---|
2605 | } |
---|
2606 | |
---|
2607 | static void |
---|
2608 | img_write_item_v3to7(img *pimg, int code, int flags, const char *s, |
---|
2609 | double x, double y, double z) |
---|
2610 | { |
---|
2611 | switch (code) { |
---|
2612 | case img_LABEL: |
---|
2613 | write_v3label(pimg, 0x40 | flags, s); |
---|
2614 | break; |
---|
2615 | case img_XSECT: { |
---|
2616 | INT32_T l, r, u, d, max_dim; |
---|
2617 | /* Need at least version 5 for img_XSECT. */ |
---|
2618 | if (pimg->version < 5) return; |
---|
2619 | img_write_item_date(pimg); |
---|
2620 | l = (INT32_T)my_lround(pimg->l * 100.0); |
---|
2621 | r = (INT32_T)my_lround(pimg->r * 100.0); |
---|
2622 | u = (INT32_T)my_lround(pimg->u * 100.0); |
---|
2623 | d = (INT32_T)my_lround(pimg->d * 100.0); |
---|
2624 | if (l < 0) l = -1; |
---|
2625 | if (r < 0) r = -1; |
---|
2626 | if (u < 0) u = -1; |
---|
2627 | if (d < 0) d = -1; |
---|
2628 | max_dim = max(max(l, r), max(u, d)); |
---|
2629 | flags = (flags & img_XFLAG_END) ? 1 : 0; |
---|
2630 | if (max_dim >= 32768) flags |= 2; |
---|
2631 | write_v3label(pimg, 0x30 | flags, s); |
---|
2632 | if (flags & 2) { |
---|
2633 | /* Big passage! Need to use 4 bytes. */ |
---|
2634 | put32(l, pimg->fh); |
---|
2635 | put32(r, pimg->fh); |
---|
2636 | put32(u, pimg->fh); |
---|
2637 | put32(d, pimg->fh); |
---|
2638 | } else { |
---|
2639 | put16(l, pimg->fh); |
---|
2640 | put16(r, pimg->fh); |
---|
2641 | put16(u, pimg->fh); |
---|
2642 | put16(d, pimg->fh); |
---|
2643 | } |
---|
2644 | return; |
---|
2645 | } |
---|
2646 | case img_MOVE: |
---|
2647 | PUTC(15, pimg->fh); |
---|
2648 | break; |
---|
2649 | case img_LINE: |
---|
2650 | if (pimg->version >= 4) { |
---|
2651 | img_write_item_date(pimg); |
---|
2652 | } |
---|
2653 | write_v3label(pimg, 0x80 | flags, s ? s : ""); |
---|
2654 | break; |
---|
2655 | default: /* ignore for now */ |
---|
2656 | return; |
---|
2657 | } |
---|
2658 | write_coord(pimg->fh, x, y, z); |
---|
2659 | } |
---|
2660 | |
---|
2661 | static void |
---|
2662 | img_write_item_ancient(img *pimg, int code, int flags, const char *s, |
---|
2663 | double x, double y, double z) |
---|
2664 | { |
---|
2665 | size_t len; |
---|
2666 | INT32_T opt = 0; |
---|
2667 | SVX_ASSERT(pimg->version > 0); |
---|
2668 | switch (code) { |
---|
2669 | case img_LABEL: |
---|
2670 | if (pimg->version == 1) { |
---|
2671 | /* put a move before each label */ |
---|
2672 | img_write_item_ancient(pimg, img_MOVE, 0, NULL, x, y, z); |
---|
2673 | put32(2, pimg->fh); |
---|
2674 | fputsnl(s, pimg->fh); |
---|
2675 | return; |
---|
2676 | } |
---|
2677 | len = strlen(s); |
---|
2678 | if (len > 255 || strchr(s, '\n')) { |
---|
2679 | /* long label - not in early incarnations of v2 format, but few |
---|
2680 | * 3d files will need these, so better not to force incompatibility |
---|
2681 | * with a new version I think... */ |
---|
2682 | PUTC(7, pimg->fh); |
---|
2683 | PUTC(flags, pimg->fh); |
---|
2684 | put32(len, pimg->fh); |
---|
2685 | fputs(s, pimg->fh); |
---|
2686 | } else { |
---|
2687 | PUTC(0x40 | (flags & 0x3f), pimg->fh); |
---|
2688 | fputsnl(s, pimg->fh); |
---|
2689 | } |
---|
2690 | opt = 0; |
---|
2691 | break; |
---|
2692 | case img_MOVE: |
---|
2693 | opt = 4; |
---|
2694 | break; |
---|
2695 | case img_LINE: |
---|
2696 | if (pimg->version > 1) { |
---|
2697 | opt = 0x80 | (flags & 0x3f); |
---|
2698 | break; |
---|
2699 | } |
---|
2700 | opt = 5; |
---|
2701 | break; |
---|
2702 | default: /* ignore for now */ |
---|
2703 | return; |
---|
2704 | } |
---|
2705 | if (pimg->version == 1) { |
---|
2706 | put32(opt, pimg->fh); |
---|
2707 | } else { |
---|
2708 | if (opt) PUTC(opt, pimg->fh); |
---|
2709 | } |
---|
2710 | write_coord(pimg->fh, x, y, z); |
---|
2711 | } |
---|
2712 | |
---|
2713 | /* Write error information for the current traverse |
---|
2714 | * n_legs is the number of legs in the traverse |
---|
2715 | * length is the traverse length (in m) |
---|
2716 | * E is the ratio of the observed misclosure to the theoretical one |
---|
2717 | * H is the ratio of the observed horizontal misclosure to the theoretical one |
---|
2718 | * V is the ratio of the observed vertical misclosure to the theoretical one |
---|
2719 | */ |
---|
2720 | void |
---|
2721 | img_write_errors(img *pimg, int n_legs, double length, |
---|
2722 | double E, double H, double V) |
---|
2723 | { |
---|
2724 | PUTC((pimg->version >= 8 ? 0x1f : 0x22), pimg->fh); |
---|
2725 | put32(n_legs, pimg->fh); |
---|
2726 | put32((INT32_T)my_lround(length * 100.0), pimg->fh); |
---|
2727 | put32((INT32_T)my_lround(E * 100.0), pimg->fh); |
---|
2728 | put32((INT32_T)my_lround(H * 100.0), pimg->fh); |
---|
2729 | put32((INT32_T)my_lround(V * 100.0), pimg->fh); |
---|
2730 | } |
---|
2731 | |
---|
2732 | int |
---|
2733 | img_close(img *pimg) |
---|
2734 | { |
---|
2735 | int result = 1; |
---|
2736 | if (pimg) { |
---|
2737 | if (pimg->fh) { |
---|
2738 | if (pimg->fRead) { |
---|
2739 | osfree(pimg->survey); |
---|
2740 | osfree(pimg->title); |
---|
2741 | osfree(pimg->cs); |
---|
2742 | osfree(pimg->datestamp); |
---|
2743 | } else { |
---|
2744 | /* write end of data marker */ |
---|
2745 | switch (pimg->version) { |
---|
2746 | case 1: |
---|
2747 | put32((INT32_T)-1, pimg->fh); |
---|
2748 | break; |
---|
2749 | default: |
---|
2750 | if (pimg->version <= 7 ? |
---|
2751 | (pimg->label_len != 0) : |
---|
2752 | (pimg->style != img_STYLE_NORMAL)) { |
---|
2753 | PUTC(0, pimg->fh); |
---|
2754 | } |
---|
2755 | /* FALL THROUGH */ |
---|
2756 | case 2: |
---|
2757 | PUTC(0, pimg->fh); |
---|
2758 | break; |
---|
2759 | } |
---|
2760 | } |
---|
2761 | if (ferror(pimg->fh)) result = 0; |
---|
2762 | if (pimg->close_func && pimg->close_func(pimg->fh)) |
---|
2763 | result = 0; |
---|
2764 | if (!result) img_errno = pimg->fRead ? IMG_READERROR : IMG_WRITEERROR; |
---|
2765 | } |
---|
2766 | osfree(pimg->label_buf); |
---|
2767 | osfree(pimg->filename_opened); |
---|
2768 | osfree(pimg); |
---|
2769 | } |
---|
2770 | return result; |
---|
2771 | } |
---|