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 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 <stdio.h> |
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25 | #include <string.h> |
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26 | #include <stdlib.h> |
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27 | #include <time.h> |
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28 | #include <ctype.h> |
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29 | #include <locale.h> |
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30 | |
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31 | #include "img.h" |
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32 | |
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33 | #define LATEST_IMG_VERSION 6 |
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34 | |
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35 | #ifdef IMG_HOSTED |
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36 | # include "debug.h" |
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37 | # include "filelist.h" |
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38 | # include "filename.h" |
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39 | # include "message.h" |
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40 | # include "useful.h" |
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41 | # define TIMENA msg(/*Date and time not available.*/108) |
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42 | # define TIMEFMT msg(/*%a,%Y.%m.%d %H:%M:%S %Z*/107) |
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43 | # define INT32_T int32_t |
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44 | #else |
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45 | # define INT32_T int |
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46 | # define TIMENA "Time not available." |
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47 | # define TIMEFMT "%a,%Y.%m.%d %H:%M:%S %Z" |
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48 | # define EXT_SVX_3D "3d" |
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49 | # define EXT_SVX_POS "pos" |
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50 | # define FNM_SEP_EXT '.' |
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51 | # define METRES_PER_FOOT 0.3048 /* exact value */ |
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52 | # define xosmalloc(L) malloc((L)) |
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53 | # define xosrealloc(L,S) realloc((L),(S)) |
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54 | # define osfree(P) free((P)) |
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55 | # define ossizeof(T) sizeof(T) |
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56 | /* in IMG_HOSTED mode, this tests if a filename refers to a directory */ |
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57 | # define fDirectory(X) 0 |
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58 | /* open file FNM with mode MODE, maybe using path PTH and/or extension EXT */ |
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59 | /* path isn't used in img.c, but EXT is */ |
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60 | # define fopenWithPthAndExt(PTH,FNM,EXT,MODE,X) fopen(FNM,MODE) |
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61 | # define fFalse 0 |
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62 | # define fTrue 1 |
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63 | # define bool int |
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64 | /* dummy do {...} while(0) hack to permit stuff like |
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65 | * if (s) fputsnl(s,fh); else exit(1); |
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66 | * to work as intended |
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67 | */ |
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68 | # define fputsnl(S, FH) do {fputs((S), (FH)); putc('\n', (FH));} while(0) |
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69 | # define SVX_ASSERT(X) |
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70 | |
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71 | static INT32_T |
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72 | get32(FILE *fh) |
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73 | { |
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74 | INT32_T w = getc(fh); |
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75 | w |= (INT32_T)getc(fh) << 8l; |
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76 | w |= (INT32_T)getc(fh) << 16l; |
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77 | w |= (INT32_T)getc(fh) << 24l; |
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78 | return w; |
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79 | } |
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80 | |
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81 | static void |
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82 | put32(long w, FILE *fh) |
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83 | { |
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84 | putc((char)(w), fh); |
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85 | putc((char)(w >> 8l), fh); |
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86 | putc((char)(w >> 16l), fh); |
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87 | putc((char)(w >> 24l), fh); |
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88 | } |
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89 | |
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90 | static short |
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91 | get16(FILE *fh) |
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92 | { |
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93 | short w = getc(fh); |
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94 | w |= (long)getc(fh) << 8l; |
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95 | return w; |
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96 | } |
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97 | |
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98 | static void |
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99 | put16(short w, FILE *fh) |
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100 | { |
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101 | putc((char)(w), fh); |
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102 | putc((char)(w >> 8l), fh); |
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103 | } |
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104 | |
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105 | static char * |
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106 | baseleaf_from_fnm(const char *fnm) |
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107 | { |
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108 | const char *p; |
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109 | char *q; |
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110 | size_t len; |
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111 | |
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112 | p = fnm; |
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113 | q = strrchr(p, '/'); |
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114 | if (q) p = q + 1; |
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115 | q = strrchr(p, '\\'); |
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116 | if (q) p = q + 1; |
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117 | |
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118 | q = strrchr(p, FNM_SEP_EXT); |
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119 | if (q) len = (const char *)q - p; else len = strlen(p); |
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120 | |
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121 | q = xosmalloc(len + 1); |
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122 | if (!q) return NULL; |
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123 | memcpy(q, p, len); |
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124 | q[len] = '\0'; |
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125 | return q; |
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126 | } |
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127 | #endif |
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128 | |
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129 | #include <math.h> |
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130 | #ifdef HAVE_ROUND |
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131 | extern double round(double); /* prototype is often missing... */ |
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132 | # define my_round round |
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133 | #else |
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134 | static double |
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135 | my_round(double x) { |
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136 | if (x >= 0.0) return floor(x + 0.5); |
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137 | return ceil(x - 0.5); |
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138 | } |
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139 | #endif |
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140 | |
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141 | /* portable case insensitive string compare */ |
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142 | #if defined(strcasecmp) || defined(HAVE_STRCASECMP) |
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143 | # define my_strcasecmp strcasecmp |
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144 | #else |
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145 | /* What about top bit set chars? */ |
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146 | int my_strcasecmp(const char *s1, const char *s2) { |
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147 | register int c1, c2; |
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148 | do { |
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149 | c1 = *s1++; |
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150 | c2 = *s2++; |
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151 | } while (c1 && toupper(c1) == toupper(c2)); |
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152 | /* now calculate real difference */ |
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153 | return c1 - c2; |
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154 | } |
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155 | #endif |
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156 | |
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157 | unsigned int img_output_version = LATEST_IMG_VERSION; |
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158 | |
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159 | #ifdef IMG_HOSTED |
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160 | static enum { |
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161 | IMG_NONE = 0, |
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162 | IMG_FILENOTFOUND = /*Couldn't open data file `%s'*/24, |
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163 | IMG_OUTOFMEMORY = /*Out of memory %.0s*/38, |
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164 | IMG_DIRECTORY = /*Filename `%s' refers to directory*/44, |
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165 | IMG_CANTOPENOUT = /*Failed to open output file `%s'*/47, |
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166 | IMG_BADFORMAT = /*Bad 3d image file `%s'*/106, |
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167 | IMG_READERROR = /*Error reading from file `%s'*/109, |
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168 | IMG_WRITEERROR = /*Error writing to file `%s'*/110, |
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169 | IMG_TOONEW = /*File `%s' has a newer format than this program can understand*/114 |
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170 | } img_errno = IMG_NONE; |
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171 | #else |
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172 | static img_errcode img_errno = IMG_NONE; |
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173 | #endif |
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174 | |
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175 | #define FILEID "Survex 3D Image File" |
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176 | |
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177 | #define EXT_PLT "plt" |
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178 | #define EXT_PLF "plf" |
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179 | #define EXT_XYZ "xyz" |
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180 | |
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181 | /* Attempt to string paste to ensure we are passed a literal string */ |
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182 | #define LITLEN(S) (sizeof(S"") - 1) |
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183 | |
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184 | /* Fake "version numbers" for non-3d formats we can read. */ |
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185 | #define VERSION_CMAP_SHOT -4 |
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186 | #define VERSION_CMAP_STATION -3 |
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187 | #define VERSION_COMPASS_PLT -2 |
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188 | #define VERSION_SURVEX_POS -1 |
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189 | |
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190 | static char * |
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191 | my_strdup(const char *str) |
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192 | { |
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193 | char *p; |
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194 | size_t len = strlen(str) + 1; |
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195 | p = xosmalloc(len); |
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196 | if (p) memcpy(p, str, len); |
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197 | return p; |
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198 | } |
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199 | |
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200 | static char * |
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201 | getline_alloc(FILE *fh) |
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202 | { |
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203 | int ch; |
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204 | size_t i = 0; |
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205 | size_t len = 16; |
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206 | char *buf = xosmalloc(len); |
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207 | if (!buf) return NULL; |
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208 | |
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209 | ch = getc(fh); |
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210 | while (ch != '\n' && ch != '\r' && ch != EOF) { |
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211 | buf[i++] = ch; |
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212 | if (i == len - 1) { |
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213 | char *p; |
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214 | len += len; |
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215 | p = xosrealloc(buf, len); |
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216 | if (!p) { |
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217 | osfree(buf); |
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218 | return NULL; |
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219 | } |
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220 | buf = p; |
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221 | } |
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222 | ch = getc(fh); |
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223 | } |
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224 | if (ch == '\n' || ch == '\r') { |
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225 | int otherone = ch ^ ('\n' ^ '\r'); |
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226 | ch = getc(fh); |
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227 | /* if it's not the other eol character, put it back */ |
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228 | if (ch != otherone) ungetc(ch, fh); |
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229 | } |
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230 | buf[i++] = '\0'; |
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231 | return buf; |
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232 | } |
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233 | |
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234 | #ifndef IMG_HOSTED |
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235 | img_errcode |
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236 | img_error(void) |
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237 | { |
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238 | return img_errno; |
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239 | } |
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240 | #else |
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241 | int |
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242 | img_error(void) |
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243 | { |
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244 | return (int)img_errno; |
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245 | } |
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246 | #endif |
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247 | |
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248 | static bool |
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249 | check_label_space(img *pimg, size_t len) |
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250 | { |
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251 | if (len > pimg->buf_len) { |
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252 | char *b = xosrealloc(pimg->label_buf, len); |
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253 | if (!b) return fFalse; |
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254 | pimg->label = (pimg->label - pimg->label_buf) + b; |
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255 | pimg->label_buf = b; |
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256 | pimg->buf_len = len; |
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257 | } |
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258 | return fTrue; |
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259 | } |
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260 | |
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261 | #define has_ext(F,L,E) ((L) > LITLEN(E) + 1 &&\ |
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262 | (F)[(L) - LITLEN(E) - 1] == FNM_SEP_EXT &&\ |
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263 | my_strcasecmp((F) + (L) - LITLEN(E), E) == 0) |
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264 | |
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265 | img * |
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266 | img_open_survey(const char *fnm, const char *survey) |
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267 | { |
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268 | img *pimg; |
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269 | size_t len; |
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270 | char buf[LITLEN(FILEID) + 9]; |
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271 | int ch; |
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272 | |
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273 | if (fDirectory(fnm)) { |
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274 | img_errno = IMG_DIRECTORY; |
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275 | return NULL; |
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276 | } |
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277 | |
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278 | pimg = (img *)xosmalloc(ossizeof(img)); |
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279 | if (pimg == NULL) { |
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280 | img_errno = IMG_OUTOFMEMORY; |
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281 | return NULL; |
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282 | } |
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283 | |
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284 | pimg->buf_len = 257; |
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285 | pimg->label_buf = xosmalloc(pimg->buf_len); |
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286 | if (!pimg->label_buf) { |
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287 | osfree(pimg); |
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288 | img_errno = IMG_OUTOFMEMORY; |
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289 | return NULL; |
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290 | } |
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291 | |
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292 | pimg->fh = fopenWithPthAndExt("", fnm, EXT_SVX_3D, "rb", &(pimg->filename_opened)); |
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293 | if (pimg->fh == NULL) { |
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294 | osfree(pimg->label_buf); |
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295 | osfree(pimg); |
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296 | img_errno = IMG_FILENOTFOUND; |
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297 | return NULL; |
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298 | } |
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299 | |
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300 | pimg->fRead = fTrue; /* reading from this file */ |
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301 | img_errno = IMG_NONE; |
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302 | |
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303 | pimg->flags = 0; |
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304 | |
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305 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
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306 | /* for VERSION_COMPASS_PLT, 0 value indicates we haven't |
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307 | * entered a survey yet */ |
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308 | /* for VERSION_CMAP_SHOT, we store the last station here |
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309 | * to detect whether we MOVE or LINE */ |
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310 | pimg->label_len = 0; |
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311 | pimg->label_buf[0] = '\0'; |
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312 | |
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313 | pimg->survey = NULL; |
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314 | pimg->survey_len = 0; |
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315 | pimg->separator = '.'; |
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316 | pimg->date1 = 0; |
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317 | pimg->date2 = 0; |
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318 | pimg->is_extended_elevation = 0; |
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319 | |
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320 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
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321 | |
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322 | pimg->title = pimg->datestamp = NULL; |
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323 | if (survey) { |
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324 | len = strlen(survey); |
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325 | if (len) { |
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326 | if (survey[len - 1] == '.') len--; |
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327 | if (len) { |
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328 | char *p; |
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329 | pimg->survey = xosmalloc(len + 2); |
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330 | if (!pimg->survey) { |
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331 | img_errno = IMG_OUTOFMEMORY; |
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332 | goto error; |
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333 | } |
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334 | memcpy(pimg->survey, survey, len); |
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335 | /* Set title to leaf survey name */ |
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336 | pimg->survey[len] = '\0'; |
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337 | p = strchr(pimg->survey, '.'); |
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338 | if (p) p++; else p = pimg->survey; |
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339 | pimg->title = my_strdup(p); |
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340 | if (!pimg->title) { |
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341 | img_errno = IMG_OUTOFMEMORY; |
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342 | goto error; |
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343 | } |
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344 | pimg->survey[len] = '.'; |
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345 | pimg->survey[len + 1] = '\0'; |
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346 | } |
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347 | } |
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348 | pimg->survey_len = len; |
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349 | } |
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350 | |
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351 | /* [VERSION_COMPASS_PLT, VERSION_CMAP_STATION, VERSION_CMAP_SHOT] pending |
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352 | * IMG_LINE or IMG_MOVE - both have 4 added. |
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353 | * [VERSION_SURVEX_POS] already skipped heading line, or there wasn't one |
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354 | * [version 0] not in the middle of a 'LINE' command |
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355 | * [version >= 3] not in the middle of turning a LINE into a MOVE |
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356 | */ |
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357 | pimg->pending = 0; |
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358 | |
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359 | len = strlen(fnm); |
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360 | if (has_ext(fnm, len, EXT_SVX_POS)) { |
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361 | pos_file: |
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362 | pimg->version = VERSION_SURVEX_POS; |
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363 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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364 | pimg->datestamp = my_strdup(TIMENA); |
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365 | if (!pimg->datestamp) { |
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366 | img_errno = IMG_OUTOFMEMORY; |
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367 | goto error; |
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368 | } |
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369 | pimg->start = 0; |
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370 | return pimg; |
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371 | } |
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372 | |
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373 | if (has_ext(fnm, len, EXT_PLT) || has_ext(fnm, len, EXT_PLF)) { |
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374 | long fpos; |
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375 | plt_file: |
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376 | pimg->version = VERSION_COMPASS_PLT; |
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377 | /* Spaces aren't legal in Compass station names, but dots are, so |
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378 | * use space as the level separator */ |
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379 | pimg->separator = ' '; |
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380 | pimg->start = 0; |
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381 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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382 | pimg->datestamp = my_strdup(TIMENA); |
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383 | if (!pimg->datestamp) { |
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384 | img_errno = IMG_OUTOFMEMORY; |
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385 | goto error; |
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386 | } |
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387 | while (1) { |
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388 | ch = getc(pimg->fh); |
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389 | switch (ch) { |
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390 | case '\x1a': |
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391 | fseek(pimg->fh, -1, SEEK_CUR); |
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392 | /* FALL THRU */ |
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393 | case EOF: |
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394 | pimg->start = ftell(pimg->fh); |
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395 | return pimg; |
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396 | case 'N': { |
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397 | char *line, *q; |
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398 | fpos = ftell(pimg->fh) - 1; |
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399 | if (!pimg->survey) { |
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400 | /* FIXME : if there's only one survey in the file, it'd be nice |
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401 | * to use its description as the title here... |
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402 | */ |
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403 | ungetc('N', pimg->fh); |
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404 | pimg->start = fpos; |
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405 | return pimg; |
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406 | } |
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407 | line = getline_alloc(pimg->fh); |
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408 | if (!line) { |
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409 | img_errno = IMG_OUTOFMEMORY; |
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410 | goto error; |
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411 | } |
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412 | len = 0; |
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413 | while (line[len] > 32) ++len; |
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414 | if (pimg->survey_len != len || |
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415 | memcmp(line, pimg->survey, len) != 0) { |
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416 | osfree(line); |
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417 | continue; |
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418 | } |
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419 | q = strchr(line + len, 'C'); |
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420 | if (q && q[1]) { |
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421 | osfree(pimg->title); |
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422 | pimg->title = my_strdup(q + 1); |
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423 | } else if (!pimg->title) { |
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424 | pimg->title = my_strdup(pimg->label); |
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425 | } |
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426 | osfree(line); |
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427 | if (!pimg->title) { |
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428 | img_errno = IMG_OUTOFMEMORY; |
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429 | goto error; |
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430 | } |
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431 | if (!pimg->start) pimg->start = fpos; |
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432 | fseek(pimg->fh, pimg->start, SEEK_SET); |
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433 | return pimg; |
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434 | } |
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435 | case 'M': case 'D': |
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436 | pimg->start = ftell(pimg->fh) - 1; |
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437 | break; |
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438 | } |
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439 | while (ch != '\n' && ch != '\r') { |
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440 | ch = getc(pimg->fh); |
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441 | } |
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442 | } |
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443 | } |
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444 | |
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445 | if (has_ext(fnm, len, EXT_XYZ)) { |
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446 | char *line; |
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447 | xyz_file: |
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448 | /* Spaces aren't legal in CMAP station names, but dots are, so |
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449 | * use space as the level separator. */ |
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450 | pimg->separator = ' '; |
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451 | line = getline_alloc(pimg->fh); |
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452 | if (!line) { |
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453 | img_errno = IMG_OUTOFMEMORY; |
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454 | goto error; |
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455 | } |
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456 | /* FIXME: reparse date? */ |
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457 | len = strlen(line); |
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458 | if (len > 59) line[59] = '\0'; |
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459 | if (len > 45) { |
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460 | pimg->datestamp = my_strdup(line + 45); |
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461 | } else { |
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462 | pimg->datestamp = my_strdup(TIMENA); |
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463 | } |
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464 | if (strncmp(line, " Cave Survey Data Processed by CMAP ", |
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465 | LITLEN(" Cave Survey Data Processed by CMAP ")) == 0) { |
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466 | len = 0; |
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467 | } else { |
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468 | if (len > 45) { |
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469 | line[45] = '\0'; |
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470 | len = 45; |
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471 | } |
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472 | while (len > 2 && line[len - 1] == ' ') --len; |
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473 | if (len > 2) { |
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474 | line[len] = '\0'; |
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475 | pimg->title = my_strdup(line + 2); |
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476 | } |
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477 | } |
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478 | if (len <= 2) pimg->title = baseleaf_from_fnm(fnm); |
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479 | osfree(line); |
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480 | if (!pimg->datestamp || !pimg->title) { |
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481 | img_errno = IMG_OUTOFMEMORY; |
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482 | goto error; |
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483 | } |
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484 | line = getline_alloc(pimg->fh); |
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485 | if (!line) { |
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486 | img_errno = IMG_OUTOFMEMORY; |
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487 | goto error; |
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488 | } |
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489 | if (line[0] != ' ' || (line[1] != 'S' && line[1] != 'O')) { |
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490 | img_errno = IMG_BADFORMAT; |
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491 | goto error; |
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492 | } |
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493 | if (line[1] == 'S') { |
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494 | pimg->version = VERSION_CMAP_STATION; |
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495 | } else { |
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496 | pimg->version = VERSION_CMAP_SHOT; |
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497 | } |
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498 | osfree(line); |
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499 | line = getline_alloc(pimg->fh); |
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500 | if (!line) { |
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501 | img_errno = IMG_OUTOFMEMORY; |
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502 | goto error; |
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503 | } |
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504 | if (line[0] != ' ' || line[1] != '-') { |
---|
505 | img_errno = IMG_BADFORMAT; |
---|
506 | goto error; |
---|
507 | } |
---|
508 | osfree(line); |
---|
509 | pimg->start = ftell(pimg->fh); |
---|
510 | return pimg; |
---|
511 | } |
---|
512 | |
---|
513 | if (fread(buf, LITLEN(FILEID) + 1, 1, pimg->fh) != 1 || |
---|
514 | memcmp(buf, FILEID"\n", LITLEN(FILEID) + 1) != 0) { |
---|
515 | if (fread(buf + LITLEN(FILEID) + 1, 8, 1, pimg->fh) == 1 && |
---|
516 | memcmp(buf, FILEID"\r\nv0.01\r\n", LITLEN(FILEID) + 9) == 0) { |
---|
517 | /* v0 3d file with DOS EOLs */ |
---|
518 | pimg->version = 0; |
---|
519 | goto v03d; |
---|
520 | } |
---|
521 | rewind(pimg->fh); |
---|
522 | if (buf[1] == ' ') { |
---|
523 | if (buf[0] == ' ') { |
---|
524 | /* Looks like a CMAP .xyz file ... */ |
---|
525 | goto xyz_file; |
---|
526 | } else if (strchr("ZSNF", buf[0])) { |
---|
527 | /* Looks like a Compass .plt file ... */ |
---|
528 | /* Almost certainly it'll start "Z " */ |
---|
529 | goto plt_file; |
---|
530 | } |
---|
531 | } |
---|
532 | if (buf[0] == '(') { |
---|
533 | /* Looks like a Survex .pos file ... */ |
---|
534 | goto pos_file; |
---|
535 | } |
---|
536 | img_errno = IMG_BADFORMAT; |
---|
537 | goto error; |
---|
538 | } |
---|
539 | |
---|
540 | /* check file format version */ |
---|
541 | ch = getc(pimg->fh); |
---|
542 | pimg->version = 0; |
---|
543 | if (tolower(ch) == 'b') { |
---|
544 | /* binary file iff B/b prefix */ |
---|
545 | pimg->version = 1; |
---|
546 | ch = getc(pimg->fh); |
---|
547 | } |
---|
548 | if (ch != 'v') { |
---|
549 | img_errno = IMG_BADFORMAT; |
---|
550 | goto error; |
---|
551 | } |
---|
552 | ch = getc(pimg->fh); |
---|
553 | if (ch == '0') { |
---|
554 | if (fread(buf, 4, 1, pimg->fh) != 1 || memcmp(buf, ".01\n", 4) != 0) { |
---|
555 | img_errno = IMG_BADFORMAT; |
---|
556 | goto error; |
---|
557 | } |
---|
558 | /* nothing special to do */ |
---|
559 | } else if (pimg->version == 0) { |
---|
560 | if (ch < '2' || ch > '0' + LATEST_IMG_VERSION || getc(pimg->fh) != '\n') { |
---|
561 | img_errno = IMG_TOONEW; |
---|
562 | goto error; |
---|
563 | } |
---|
564 | pimg->version = ch - '0'; |
---|
565 | } else { |
---|
566 | img_errno = IMG_BADFORMAT; |
---|
567 | goto error; |
---|
568 | } |
---|
569 | |
---|
570 | v03d: |
---|
571 | if (!pimg->title) |
---|
572 | pimg->title = getline_alloc(pimg->fh); |
---|
573 | else |
---|
574 | osfree(getline_alloc(pimg->fh)); |
---|
575 | pimg->datestamp = getline_alloc(pimg->fh); |
---|
576 | if (!pimg->title || !pimg->datestamp) { |
---|
577 | img_errno = IMG_OUTOFMEMORY; |
---|
578 | error: |
---|
579 | osfree(pimg->title); |
---|
580 | osfree(pimg->datestamp); |
---|
581 | osfree(pimg->filename_opened); |
---|
582 | fclose(pimg->fh); |
---|
583 | osfree(pimg); |
---|
584 | return NULL; |
---|
585 | } |
---|
586 | |
---|
587 | pimg->start = ftell(pimg->fh); |
---|
588 | |
---|
589 | len = strlen(pimg->title); |
---|
590 | if (len > 11 && strcmp(pimg->title + len - 11, " (extended)") == 0) { |
---|
591 | pimg->title[len - 11] = '\0'; |
---|
592 | pimg->is_extended_elevation = 1; |
---|
593 | } |
---|
594 | |
---|
595 | return pimg; |
---|
596 | } |
---|
597 | |
---|
598 | int |
---|
599 | img_rewind(img *pimg) |
---|
600 | { |
---|
601 | if (!pimg->fRead) { |
---|
602 | img_errno = IMG_WRITEERROR; |
---|
603 | return 0; |
---|
604 | } |
---|
605 | if (fseek(pimg->fh, pimg->start, SEEK_SET) != 0) { |
---|
606 | img_errno = IMG_READERROR; |
---|
607 | return 0; |
---|
608 | } |
---|
609 | clearerr(pimg->fh); |
---|
610 | /* [VERSION_SURVEX_POS] already skipped heading line, or there wasn't one |
---|
611 | * [version 0] not in the middle of a 'LINE' command |
---|
612 | * [version >= 3] not in the middle of turning a LINE into a MOVE */ |
---|
613 | pimg->pending = 0; |
---|
614 | |
---|
615 | img_errno = IMG_NONE; |
---|
616 | |
---|
617 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
---|
618 | /* for VERSION_COMPASS_PLT, 0 value indicates we haven't entered a survey |
---|
619 | * yet */ |
---|
620 | /* for VERSION_CMAP_SHOT, we store the last station here to detect whether |
---|
621 | * we MOVE or LINE */ |
---|
622 | pimg->label_len = 0; |
---|
623 | return 1; |
---|
624 | } |
---|
625 | |
---|
626 | img * |
---|
627 | img_open_write(const char *fnm, char *title_buf, bool fBinary) |
---|
628 | { |
---|
629 | time_t tm; |
---|
630 | img *pimg; |
---|
631 | |
---|
632 | fBinary = fBinary; |
---|
633 | |
---|
634 | if (fDirectory(fnm)) { |
---|
635 | img_errno = IMG_DIRECTORY; |
---|
636 | return NULL; |
---|
637 | } |
---|
638 | |
---|
639 | pimg = (img *)xosmalloc(ossizeof(img)); |
---|
640 | if (pimg == NULL) { |
---|
641 | img_errno = IMG_OUTOFMEMORY; |
---|
642 | return NULL; |
---|
643 | } |
---|
644 | |
---|
645 | pimg->buf_len = 257; |
---|
646 | pimg->label_buf = xosmalloc(pimg->buf_len); |
---|
647 | if (!pimg->label_buf) { |
---|
648 | osfree(pimg); |
---|
649 | img_errno = IMG_OUTOFMEMORY; |
---|
650 | return NULL; |
---|
651 | } |
---|
652 | |
---|
653 | pimg->fh = fopen(fnm, "wb"); |
---|
654 | if (!pimg->fh) { |
---|
655 | osfree(pimg->label_buf); |
---|
656 | osfree(pimg); |
---|
657 | img_errno = IMG_CANTOPENOUT; |
---|
658 | return NULL; |
---|
659 | } |
---|
660 | |
---|
661 | pimg->filename_opened = NULL; |
---|
662 | |
---|
663 | /* Output image file header */ |
---|
664 | fputs("Survex 3D Image File\n", pimg->fh); /* file identifier string */ |
---|
665 | if (img_output_version < 2) { |
---|
666 | pimg->version = 1; |
---|
667 | fputs("Bv0.01\n", pimg->fh); /* binary file format version number */ |
---|
668 | } else { |
---|
669 | pimg->version = (img_output_version > LATEST_IMG_VERSION) ? LATEST_IMG_VERSION : img_output_version; |
---|
670 | fprintf(pimg->fh, "v%d\n", pimg->version); /* file format version no. */ |
---|
671 | } |
---|
672 | fputsnl(title_buf, pimg->fh); |
---|
673 | tm = time(NULL); |
---|
674 | if (tm == (time_t)-1) { |
---|
675 | fputsnl(TIMENA, pimg->fh); |
---|
676 | } else { |
---|
677 | char date[256]; |
---|
678 | /* output current date and time in format specified */ |
---|
679 | strftime(date, 256, TIMEFMT, localtime(&tm)); |
---|
680 | fputsnl(date, pimg->fh); |
---|
681 | } |
---|
682 | #if 0 |
---|
683 | if (img_output_version >= 5) { |
---|
684 | static const unsigned char codelengths[32] = { |
---|
685 | 4, 8, 8, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
---|
686 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
---|
687 | }; |
---|
688 | fwrite(codelengths, 32, 1, pimg->fh); |
---|
689 | } |
---|
690 | #endif |
---|
691 | pimg->fRead = fFalse; /* writing to this file */ |
---|
692 | img_errno = IMG_NONE; |
---|
693 | |
---|
694 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
---|
695 | pimg->label_buf[0] = '\0'; |
---|
696 | pimg->label_len = 0; |
---|
697 | |
---|
698 | pimg->date1 = 0; |
---|
699 | pimg->date2 = 0; |
---|
700 | |
---|
701 | pimg->olddate1 = 0; |
---|
702 | pimg->olddate2 = 0; |
---|
703 | |
---|
704 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
705 | |
---|
706 | pimg->n_legs = 0; |
---|
707 | pimg->length = 0.0; |
---|
708 | pimg->E = pimg->H = pimg->V = 0.0; |
---|
709 | |
---|
710 | /* Don't check for write errors now - let img_close() report them... */ |
---|
711 | return pimg; |
---|
712 | } |
---|
713 | |
---|
714 | static void |
---|
715 | read_xyz_station_coords(img_point *pt, const char *line) |
---|
716 | { |
---|
717 | char num[12]; |
---|
718 | memcpy(num, line + 6, 9); |
---|
719 | num[9] = '\0'; |
---|
720 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
721 | memcpy(num, line + 15, 9); |
---|
722 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
723 | memcpy(num, line + 24, 8); |
---|
724 | num[8] = '\0'; |
---|
725 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
726 | } |
---|
727 | |
---|
728 | static void |
---|
729 | read_xyz_shot_coords(img_point *pt, const char *line) |
---|
730 | { |
---|
731 | char num[12]; |
---|
732 | memcpy(num, line + 40, 10); |
---|
733 | num[10] = '\0'; |
---|
734 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
735 | memcpy(num, line + 50, 10); |
---|
736 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
737 | memcpy(num, line + 60, 9); |
---|
738 | num[9] = '\0'; |
---|
739 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
740 | } |
---|
741 | |
---|
742 | static void |
---|
743 | subtract_xyz_shot_deltas(img_point *pt, const char *line) |
---|
744 | { |
---|
745 | char num[12]; |
---|
746 | memcpy(num, line + 15, 9); |
---|
747 | num[9] = '\0'; |
---|
748 | pt->x -= atof(num) / METRES_PER_FOOT; |
---|
749 | memcpy(num, line + 24, 8); |
---|
750 | num[8] = '\0'; |
---|
751 | pt->y -= atof(num) / METRES_PER_FOOT; |
---|
752 | memcpy(num, line + 32, 8); |
---|
753 | pt->z -= atof(num) / METRES_PER_FOOT; |
---|
754 | } |
---|
755 | |
---|
756 | static int |
---|
757 | read_coord(FILE *fh, img_point *pt) |
---|
758 | { |
---|
759 | SVX_ASSERT(fh); |
---|
760 | SVX_ASSERT(pt); |
---|
761 | pt->x = get32(fh) / 100.0; |
---|
762 | pt->y = get32(fh) / 100.0; |
---|
763 | pt->z = get32(fh) / 100.0; |
---|
764 | if (ferror(fh) || feof(fh)) { |
---|
765 | img_errno = feof(fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
766 | return 0; |
---|
767 | } |
---|
768 | return 1; |
---|
769 | } |
---|
770 | |
---|
771 | static int |
---|
772 | skip_coord(FILE *fh) |
---|
773 | { |
---|
774 | return (fseek(fh, 12, SEEK_CUR) == 0); |
---|
775 | } |
---|
776 | |
---|
777 | static int |
---|
778 | read_v3label(img *pimg) |
---|
779 | { |
---|
780 | char *q; |
---|
781 | long len = getc(pimg->fh); |
---|
782 | if (len == EOF) { |
---|
783 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
784 | return img_BAD; |
---|
785 | } |
---|
786 | if (len == 0xfe) { |
---|
787 | len += get16(pimg->fh); |
---|
788 | if (feof(pimg->fh)) { |
---|
789 | img_errno = IMG_BADFORMAT; |
---|
790 | return img_BAD; |
---|
791 | } |
---|
792 | if (ferror(pimg->fh)) { |
---|
793 | img_errno = IMG_READERROR; |
---|
794 | return img_BAD; |
---|
795 | } |
---|
796 | } else if (len == 0xff) { |
---|
797 | len = get32(pimg->fh); |
---|
798 | if (ferror(pimg->fh)) { |
---|
799 | img_errno = IMG_READERROR; |
---|
800 | return img_BAD; |
---|
801 | } |
---|
802 | if (feof(pimg->fh) || len < 0xfe + 0xffff) { |
---|
803 | img_errno = IMG_BADFORMAT; |
---|
804 | return img_BAD; |
---|
805 | } |
---|
806 | } |
---|
807 | |
---|
808 | if (!check_label_space(pimg, pimg->label_len + len + 1)) { |
---|
809 | img_errno = IMG_OUTOFMEMORY; |
---|
810 | return img_BAD; |
---|
811 | } |
---|
812 | q = pimg->label_buf + pimg->label_len; |
---|
813 | pimg->label_len += len; |
---|
814 | if (len && fread(q, len, 1, pimg->fh) != 1) { |
---|
815 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
816 | return img_BAD; |
---|
817 | } |
---|
818 | q[len] = '\0'; |
---|
819 | return 0; |
---|
820 | } |
---|
821 | |
---|
822 | static int img_read_item_ascii(img *pimg, img_point *p); |
---|
823 | |
---|
824 | int |
---|
825 | img_read_item(img *pimg, img_point *p) |
---|
826 | { |
---|
827 | int result; |
---|
828 | pimg->flags = 0; |
---|
829 | |
---|
830 | if (pimg->version >= 3) { |
---|
831 | int opt; |
---|
832 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
833 | if (pimg->pending == 256) { |
---|
834 | pimg->pending = 0; |
---|
835 | return img_XSECT_END; |
---|
836 | } |
---|
837 | if (pimg->pending >= 0x80) { |
---|
838 | *p = pimg->mv; |
---|
839 | pimg->flags = (int)(pimg->pending) & 0x3f; |
---|
840 | pimg->pending = 0; |
---|
841 | return img_LINE; |
---|
842 | } |
---|
843 | again3: /* label to goto if we get a prefix, date, or lrud */ |
---|
844 | pimg->label = pimg->label_buf; |
---|
845 | opt = getc(pimg->fh); |
---|
846 | if (opt == EOF) { |
---|
847 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
848 | return img_BAD; |
---|
849 | } |
---|
850 | switch (opt >> 6) { |
---|
851 | case 0: |
---|
852 | if (opt == 0) { |
---|
853 | if (!pimg->label_len) return img_STOP; /* end of data marker */ |
---|
854 | pimg->label_len = 0; |
---|
855 | goto again3; |
---|
856 | } |
---|
857 | if (opt < 15) { |
---|
858 | /* 1-14 mean trim that many levels from current prefix */ |
---|
859 | int c; |
---|
860 | if (pimg->label_len <= 17) { |
---|
861 | /* zero prefix using "0" */ |
---|
862 | img_errno = IMG_BADFORMAT; |
---|
863 | return img_BAD; |
---|
864 | } |
---|
865 | /* extra - 1 because label_len points to one past the end */ |
---|
866 | c = pimg->label_len - 17 - 1; |
---|
867 | while (pimg->label_buf[c] != '.' || --opt > 0) { |
---|
868 | if (--c < 0) { |
---|
869 | /* zero prefix using "0" */ |
---|
870 | img_errno = IMG_BADFORMAT; |
---|
871 | return img_BAD; |
---|
872 | } |
---|
873 | } |
---|
874 | c++; |
---|
875 | pimg->label_len = c; |
---|
876 | goto again3; |
---|
877 | } |
---|
878 | if (opt == 15) { |
---|
879 | result = img_MOVE; |
---|
880 | break; |
---|
881 | } |
---|
882 | if (opt >= 0x20) { |
---|
883 | switch (opt) { |
---|
884 | case 0x20: /* Single date */ |
---|
885 | pimg->date1 = get32(pimg->fh); |
---|
886 | pimg->date2 = pimg->date1; |
---|
887 | break; |
---|
888 | case 0x21: /* Date range */ |
---|
889 | pimg->date1 = get32(pimg->fh); |
---|
890 | pimg->date2 = get32(pimg->fh); |
---|
891 | break; |
---|
892 | case 0x22: /* Error info */ |
---|
893 | pimg->n_legs = get32(pimg->fh); |
---|
894 | pimg->length = get32(pimg->fh) / 100.0; |
---|
895 | pimg->E = get32(pimg->fh) / 100.0; |
---|
896 | pimg->H = get32(pimg->fh) / 100.0; |
---|
897 | pimg->V = get32(pimg->fh) / 100.0; |
---|
898 | return img_ERROR_INFO; |
---|
899 | case 0x30: case 0x31: /* LRUD */ |
---|
900 | case 0x32: case 0x33: /* Big LRUD! */ |
---|
901 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
902 | pimg->flags = (int)opt & 0x01; |
---|
903 | if (opt < 0x32) { |
---|
904 | pimg->l = get16(pimg->fh) / 100.0; |
---|
905 | pimg->r = get16(pimg->fh) / 100.0; |
---|
906 | pimg->u = get16(pimg->fh) / 100.0; |
---|
907 | pimg->d = get16(pimg->fh) / 100.0; |
---|
908 | } else { |
---|
909 | pimg->l = get32(pimg->fh) / 100.0; |
---|
910 | pimg->r = get32(pimg->fh) / 100.0; |
---|
911 | pimg->u = get32(pimg->fh) / 100.0; |
---|
912 | pimg->d = get32(pimg->fh) / 100.0; |
---|
913 | } |
---|
914 | if (pimg->survey_len) { |
---|
915 | size_t l = pimg->survey_len; |
---|
916 | const char *s = pimg->label_buf; |
---|
917 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
---|
918 | return img_XSECT_END; |
---|
919 | } |
---|
920 | pimg->label += l; |
---|
921 | /* skip the dot if there */ |
---|
922 | if (*pimg->label) pimg->label++; |
---|
923 | } |
---|
924 | /* If this is the last cross-section in this passage, set |
---|
925 | * pending so we return img_XSECT_END next time. */ |
---|
926 | if (pimg->flags & 0x01) { |
---|
927 | pimg->pending = 256; |
---|
928 | pimg->flags &= ~0x01; |
---|
929 | } |
---|
930 | return img_XSECT; |
---|
931 | default: /* 0x23 - 0x2f and 0x34 - 0x3f are currently unallocated. */ |
---|
932 | img_errno = IMG_BADFORMAT; |
---|
933 | return img_BAD; |
---|
934 | } |
---|
935 | goto again3; |
---|
936 | } |
---|
937 | /* 16-31 mean remove (n - 15) characters from the prefix */ |
---|
938 | /* zero prefix using 0 */ |
---|
939 | if (pimg->label_len <= (size_t)(opt - 15)) { |
---|
940 | img_errno = IMG_BADFORMAT; |
---|
941 | return img_BAD; |
---|
942 | } |
---|
943 | pimg->label_len -= (opt - 15); |
---|
944 | goto again3; |
---|
945 | case 1: |
---|
946 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
947 | |
---|
948 | result = img_LABEL; |
---|
949 | |
---|
950 | if (pimg->survey_len) { |
---|
951 | size_t l = pimg->survey_len; |
---|
952 | const char *s = pimg->label_buf; |
---|
953 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
---|
954 | if (!skip_coord(pimg->fh)) return img_BAD; |
---|
955 | pimg->pending = 0; |
---|
956 | goto again3; |
---|
957 | } |
---|
958 | pimg->label += l; |
---|
959 | /* skip the dot if there */ |
---|
960 | if (*pimg->label) pimg->label++; |
---|
961 | } |
---|
962 | |
---|
963 | pimg->flags = (int)opt & 0x3f; |
---|
964 | break; |
---|
965 | case 2: |
---|
966 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
967 | |
---|
968 | result = img_LINE; |
---|
969 | |
---|
970 | if (pimg->survey_len) { |
---|
971 | size_t l = pimg->survey_len; |
---|
972 | const char *s = pimg->label_buf; |
---|
973 | if (strncmp(pimg->survey, s, l) != 0 || |
---|
974 | !(s[l] == '.' || s[l] == '\0')) { |
---|
975 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
976 | pimg->pending = 15; |
---|
977 | goto again3; |
---|
978 | } |
---|
979 | pimg->label += l; |
---|
980 | /* skip the dot if there */ |
---|
981 | if (*pimg->label) pimg->label++; |
---|
982 | } |
---|
983 | |
---|
984 | if (pimg->pending) { |
---|
985 | *p = pimg->mv; |
---|
986 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
987 | pimg->pending = opt; |
---|
988 | return img_MOVE; |
---|
989 | } |
---|
990 | pimg->flags = (int)opt & 0x3f; |
---|
991 | break; |
---|
992 | default: |
---|
993 | img_errno = IMG_BADFORMAT; |
---|
994 | return img_BAD; |
---|
995 | } |
---|
996 | if (!read_coord(pimg->fh, p)) return img_BAD; |
---|
997 | pimg->pending = 0; |
---|
998 | return result; |
---|
999 | } |
---|
1000 | |
---|
1001 | pimg->label = pimg->label_buf; |
---|
1002 | |
---|
1003 | if (pimg->version > 0) { |
---|
1004 | static long opt_lookahead = 0; |
---|
1005 | static img_point pt = { 0.0, 0.0, 0.0 }; |
---|
1006 | long opt; |
---|
1007 | again: /* label to goto if we get a cross */ |
---|
1008 | pimg->label[0] = '\0'; |
---|
1009 | |
---|
1010 | if (pimg->version == 1) { |
---|
1011 | if (opt_lookahead) { |
---|
1012 | opt = opt_lookahead; |
---|
1013 | opt_lookahead = 0; |
---|
1014 | } else { |
---|
1015 | opt = get32(pimg->fh); |
---|
1016 | } |
---|
1017 | } else { |
---|
1018 | opt = getc(pimg->fh); |
---|
1019 | } |
---|
1020 | |
---|
1021 | if (feof(pimg->fh)) { |
---|
1022 | img_errno = IMG_BADFORMAT; |
---|
1023 | return img_BAD; |
---|
1024 | } |
---|
1025 | if (ferror(pimg->fh)) { |
---|
1026 | img_errno = IMG_READERROR; |
---|
1027 | return img_BAD; |
---|
1028 | } |
---|
1029 | |
---|
1030 | switch (opt) { |
---|
1031 | case -1: case 0: |
---|
1032 | return img_STOP; /* end of data marker */ |
---|
1033 | case 1: |
---|
1034 | /* skip coordinates */ |
---|
1035 | if (!skip_coord(pimg->fh)) { |
---|
1036 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1037 | return img_BAD; |
---|
1038 | } |
---|
1039 | goto again; |
---|
1040 | case 2: case 3: { |
---|
1041 | char *q; |
---|
1042 | int ch; |
---|
1043 | result = img_LABEL; |
---|
1044 | ch = getc(pimg->fh); |
---|
1045 | if (ch == EOF) { |
---|
1046 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1047 | return img_BAD; |
---|
1048 | } |
---|
1049 | if (ch != '\\') ungetc(ch, pimg->fh); |
---|
1050 | fgets(pimg->label_buf, 257, pimg->fh); |
---|
1051 | if (feof(pimg->fh)) { |
---|
1052 | img_errno = IMG_BADFORMAT; |
---|
1053 | return img_BAD; |
---|
1054 | } |
---|
1055 | if (ferror(pimg->fh)) { |
---|
1056 | img_errno = IMG_READERROR; |
---|
1057 | return img_BAD; |
---|
1058 | } |
---|
1059 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
1060 | if (*q != '\n') { |
---|
1061 | img_errno = IMG_BADFORMAT; |
---|
1062 | return img_BAD; |
---|
1063 | } |
---|
1064 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
1065 | if (q == pimg->label_buf) goto again; |
---|
1066 | *q = '\0'; |
---|
1067 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
1068 | if (opt == 2) goto done; |
---|
1069 | break; |
---|
1070 | } |
---|
1071 | case 6: case 7: { |
---|
1072 | long len; |
---|
1073 | result = img_LABEL; |
---|
1074 | |
---|
1075 | if (opt == 7) |
---|
1076 | pimg->flags = getc(pimg->fh); |
---|
1077 | else |
---|
1078 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
1079 | |
---|
1080 | len = get32(pimg->fh); |
---|
1081 | |
---|
1082 | if (feof(pimg->fh)) { |
---|
1083 | img_errno = IMG_BADFORMAT; |
---|
1084 | return img_BAD; |
---|
1085 | } |
---|
1086 | if (ferror(pimg->fh)) { |
---|
1087 | img_errno = IMG_READERROR; |
---|
1088 | return img_BAD; |
---|
1089 | } |
---|
1090 | |
---|
1091 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
1092 | if (len == 0) goto again; |
---|
1093 | if (!check_label_space(pimg, len + 1)) { |
---|
1094 | img_errno = IMG_OUTOFMEMORY; |
---|
1095 | return img_BAD; |
---|
1096 | } |
---|
1097 | if (fread(pimg->label_buf, len, 1, pimg->fh) != 1) { |
---|
1098 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1099 | return img_BAD; |
---|
1100 | } |
---|
1101 | pimg->label_buf[len] = '\0'; |
---|
1102 | break; |
---|
1103 | } |
---|
1104 | case 4: |
---|
1105 | result = img_MOVE; |
---|
1106 | break; |
---|
1107 | case 5: |
---|
1108 | result = img_LINE; |
---|
1109 | break; |
---|
1110 | default: |
---|
1111 | switch ((int)opt & 0xc0) { |
---|
1112 | case 0x80: |
---|
1113 | pimg->flags = (int)opt & 0x3f; |
---|
1114 | result = img_LINE; |
---|
1115 | break; |
---|
1116 | case 0x40: { |
---|
1117 | char *q; |
---|
1118 | pimg->flags = (int)opt & 0x3f; |
---|
1119 | result = img_LABEL; |
---|
1120 | if (!fgets(pimg->label_buf, 257, pimg->fh)) { |
---|
1121 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1122 | return img_BAD; |
---|
1123 | } |
---|
1124 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
1125 | /* Ignore empty-labels in some .3d files (caused by a bug) */ |
---|
1126 | if (q == pimg->label_buf) goto again; |
---|
1127 | if (*q != '\n') { |
---|
1128 | img_errno = IMG_BADFORMAT; |
---|
1129 | return img_BAD; |
---|
1130 | } |
---|
1131 | *q = '\0'; |
---|
1132 | break; |
---|
1133 | } |
---|
1134 | case 0xc0: |
---|
1135 | /* use this for an extra leg or station flag if we need it */ |
---|
1136 | default: |
---|
1137 | img_errno = IMG_BADFORMAT; |
---|
1138 | return img_BAD; |
---|
1139 | } |
---|
1140 | break; |
---|
1141 | } |
---|
1142 | |
---|
1143 | if (!read_coord(pimg->fh, &pt)) return img_BAD; |
---|
1144 | |
---|
1145 | if (result == img_LABEL && pimg->survey_len) { |
---|
1146 | if (strncmp(pimg->label_buf, pimg->survey, pimg->survey_len + 1) != 0) |
---|
1147 | goto again; |
---|
1148 | pimg->label += pimg->survey_len + 1; |
---|
1149 | } |
---|
1150 | |
---|
1151 | done: |
---|
1152 | *p = pt; |
---|
1153 | |
---|
1154 | if (result == img_MOVE && pimg->version == 1) { |
---|
1155 | /* peek at next code and see if it's an old-style label */ |
---|
1156 | opt_lookahead = get32(pimg->fh); |
---|
1157 | |
---|
1158 | if (feof(pimg->fh)) { |
---|
1159 | img_errno = IMG_BADFORMAT; |
---|
1160 | return img_BAD; |
---|
1161 | } |
---|
1162 | if (ferror(pimg->fh)) { |
---|
1163 | img_errno = IMG_READERROR; |
---|
1164 | return img_BAD; |
---|
1165 | } |
---|
1166 | |
---|
1167 | if (opt_lookahead == 2) return img_read_item(pimg, p); |
---|
1168 | } |
---|
1169 | |
---|
1170 | return result; |
---|
1171 | } else { |
---|
1172 | /* We need to set the default locale for fscanf() to work on |
---|
1173 | * numbers with "." as decimal point. */ |
---|
1174 | char * current_locale = my_strdup(setlocale(LC_NUMERIC, NULL)); |
---|
1175 | setlocale(LC_NUMERIC, "C"); |
---|
1176 | result = img_read_item_ascii(pimg, p); |
---|
1177 | setlocale(LC_NUMERIC, current_locale); |
---|
1178 | free(current_locale); |
---|
1179 | return result; |
---|
1180 | } |
---|
1181 | } |
---|
1182 | |
---|
1183 | /* Handle all for ASCII formats so we can easily fix up the locale |
---|
1184 | * so fscanf(), etc work on numbers with "." as decimal point. */ |
---|
1185 | static int |
---|
1186 | img_read_item_ascii(img *pimg, img_point *p) |
---|
1187 | { |
---|
1188 | int result; |
---|
1189 | if (pimg->version == 0) { |
---|
1190 | ascii_again: |
---|
1191 | pimg->label[0] = '\0'; |
---|
1192 | if (feof(pimg->fh)) return img_STOP; |
---|
1193 | if (pimg->pending) { |
---|
1194 | pimg->pending = 0; |
---|
1195 | result = img_LINE; |
---|
1196 | } else { |
---|
1197 | char cmd[7]; |
---|
1198 | /* Stop if nothing found */ |
---|
1199 | if (fscanf(pimg->fh, "%6s", cmd) < 1) return img_STOP; |
---|
1200 | if (strcmp(cmd, "move") == 0) |
---|
1201 | result = img_MOVE; |
---|
1202 | else if (strcmp(cmd, "draw") == 0) |
---|
1203 | result = img_LINE; |
---|
1204 | else if (strcmp(cmd, "line") == 0) { |
---|
1205 | /* set flag to indicate to process second triplet as LINE */ |
---|
1206 | pimg->pending = 1; |
---|
1207 | result = img_MOVE; |
---|
1208 | } else if (strcmp(cmd, "cross") == 0) { |
---|
1209 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
1210 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1211 | return img_BAD; |
---|
1212 | } |
---|
1213 | goto ascii_again; |
---|
1214 | } else if (strcmp(cmd, "name") == 0) { |
---|
1215 | size_t off = 0; |
---|
1216 | int ch = getc(pimg->fh); |
---|
1217 | if (ch == ' ') ch = getc(pimg->fh); |
---|
1218 | while (ch != ' ') { |
---|
1219 | if (ch == '\n' || ch == EOF) { |
---|
1220 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
1221 | return img_BAD; |
---|
1222 | } |
---|
1223 | if (off == pimg->buf_len) { |
---|
1224 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
1225 | img_errno = IMG_OUTOFMEMORY; |
---|
1226 | return img_BAD; |
---|
1227 | } |
---|
1228 | } |
---|
1229 | pimg->label_buf[off++] = ch; |
---|
1230 | ch = getc(pimg->fh); |
---|
1231 | } |
---|
1232 | pimg->label_buf[off] = '\0'; |
---|
1233 | |
---|
1234 | pimg->label = pimg->label_buf; |
---|
1235 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1236 | |
---|
1237 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1238 | |
---|
1239 | result = img_LABEL; |
---|
1240 | } else { |
---|
1241 | img_errno = IMG_BADFORMAT; |
---|
1242 | return img_BAD; /* unknown keyword */ |
---|
1243 | } |
---|
1244 | } |
---|
1245 | |
---|
1246 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
1247 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
1248 | return img_BAD; |
---|
1249 | } |
---|
1250 | |
---|
1251 | if (result == img_LABEL && pimg->survey_len) { |
---|
1252 | if (strncmp(pimg->label, pimg->survey, pimg->survey_len + 1) != 0) |
---|
1253 | goto ascii_again; |
---|
1254 | pimg->label += pimg->survey_len + 1; |
---|
1255 | } |
---|
1256 | |
---|
1257 | return result; |
---|
1258 | } else if (pimg->version == VERSION_SURVEX_POS) { |
---|
1259 | /* Survex .pos file */ |
---|
1260 | size_t off; |
---|
1261 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1262 | againpos: |
---|
1263 | off = 0; |
---|
1264 | while (fscanf(pimg->fh, "(%lf,%lf,%lf ) ", &p->x, &p->y, &p->z) != 3) { |
---|
1265 | int ch; |
---|
1266 | if (ferror(pimg->fh)) { |
---|
1267 | img_errno = IMG_READERROR; |
---|
1268 | return img_BAD; |
---|
1269 | } |
---|
1270 | if (feof(pimg->fh)) return img_STOP; |
---|
1271 | if (pimg->pending) { |
---|
1272 | img_errno = IMG_BADFORMAT; |
---|
1273 | return img_BAD; |
---|
1274 | } |
---|
1275 | pimg->pending = 1; |
---|
1276 | /* ignore rest of line */ |
---|
1277 | do { |
---|
1278 | ch = getc(pimg->fh); |
---|
1279 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
1280 | } |
---|
1281 | |
---|
1282 | pimg->label_buf[0] = '\0'; |
---|
1283 | while (!feof(pimg->fh)) { |
---|
1284 | if (!fgets(pimg->label_buf + off, pimg->buf_len - off, pimg->fh)) { |
---|
1285 | img_errno = IMG_READERROR; |
---|
1286 | return img_BAD; |
---|
1287 | } |
---|
1288 | |
---|
1289 | off += strlen(pimg->label_buf + off); |
---|
1290 | if (off && pimg->label_buf[off - 1] == '\n') { |
---|
1291 | pimg->label_buf[off - 1] = '\0'; |
---|
1292 | break; |
---|
1293 | } |
---|
1294 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
1295 | img_errno = IMG_OUTOFMEMORY; |
---|
1296 | return img_BAD; |
---|
1297 | } |
---|
1298 | } |
---|
1299 | |
---|
1300 | pimg->label = pimg->label_buf; |
---|
1301 | |
---|
1302 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1303 | |
---|
1304 | if (pimg->survey_len) { |
---|
1305 | size_t l = pimg->survey_len + 1; |
---|
1306 | if (strncmp(pimg->survey, pimg->label, l) != 0) goto againpos; |
---|
1307 | pimg->label += l; |
---|
1308 | } |
---|
1309 | |
---|
1310 | return img_LABEL; |
---|
1311 | } else if (pimg->version == VERSION_COMPASS_PLT) { |
---|
1312 | /* Compass .plt file */ |
---|
1313 | if (pimg->pending > 0) { |
---|
1314 | /* -1 signals we've entered the first survey we want to |
---|
1315 | * read, and need to fudge lots if the first action is 'D'... |
---|
1316 | */ |
---|
1317 | /* pending MOVE or LINE */ |
---|
1318 | int r = pimg->pending - 4; |
---|
1319 | pimg->pending = 0; |
---|
1320 | pimg->flags = 0; |
---|
1321 | pimg->label[pimg->label_len] = '\0'; |
---|
1322 | return r; |
---|
1323 | } |
---|
1324 | |
---|
1325 | while (1) { |
---|
1326 | char *line; |
---|
1327 | char *q; |
---|
1328 | size_t len = 0; |
---|
1329 | int ch = getc(pimg->fh); |
---|
1330 | |
---|
1331 | switch (ch) { |
---|
1332 | case '\x1a': case EOF: /* Don't insist on ^Z at end of file */ |
---|
1333 | return img_STOP; |
---|
1334 | case 'X': case 'F': case 'S': |
---|
1335 | /* bounding boX (marks end of survey), Feature survey, or |
---|
1336 | * new Section - skip to next survey */ |
---|
1337 | if (pimg->survey) return img_STOP; |
---|
1338 | skip_to_N: |
---|
1339 | while (1) { |
---|
1340 | do { |
---|
1341 | ch = getc(pimg->fh); |
---|
1342 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
1343 | while (ch == '\n' || ch == '\r') ch = getc(pimg->fh); |
---|
1344 | if (ch == 'N') break; |
---|
1345 | if (ch == '\x1a' || ch == EOF) return img_STOP; |
---|
1346 | } |
---|
1347 | /* FALLTHRU */ |
---|
1348 | case 'N': |
---|
1349 | line = getline_alloc(pimg->fh); |
---|
1350 | if (!line) { |
---|
1351 | img_errno = IMG_OUTOFMEMORY; |
---|
1352 | return img_BAD; |
---|
1353 | } |
---|
1354 | while (line[len] > 32) ++len; |
---|
1355 | if (pimg->label_len == 0) pimg->pending = -1; |
---|
1356 | if (!check_label_space(pimg, len + 1)) { |
---|
1357 | osfree(line); |
---|
1358 | img_errno = IMG_OUTOFMEMORY; |
---|
1359 | return img_BAD; |
---|
1360 | } |
---|
1361 | pimg->label_len = len; |
---|
1362 | pimg->label = pimg->label_buf; |
---|
1363 | memcpy(pimg->label, line, len); |
---|
1364 | pimg->label[len] = '\0'; |
---|
1365 | osfree(line); |
---|
1366 | break; |
---|
1367 | case 'M': case 'D': { |
---|
1368 | /* Move or Draw */ |
---|
1369 | long fpos = -1; |
---|
1370 | if (pimg->survey && pimg->label_len == 0) { |
---|
1371 | /* We're only holding onto this line in case the first line |
---|
1372 | * of the 'N' is a 'D', so skip it for now... |
---|
1373 | */ |
---|
1374 | goto skip_to_N; |
---|
1375 | } |
---|
1376 | if (ch == 'D' && pimg->pending == -1) { |
---|
1377 | if (pimg->survey) { |
---|
1378 | fpos = ftell(pimg->fh) - 1; |
---|
1379 | fseek(pimg->fh, pimg->start, SEEK_SET); |
---|
1380 | ch = getc(pimg->fh); |
---|
1381 | pimg->pending = 0; |
---|
1382 | } else { |
---|
1383 | /* If a file actually has a 'D' before any 'M', then |
---|
1384 | * pretend the 'D' is an 'M' - one of the examples |
---|
1385 | * in the docs was like this! */ |
---|
1386 | ch = 'M'; |
---|
1387 | } |
---|
1388 | } |
---|
1389 | line = getline_alloc(pimg->fh); |
---|
1390 | if (!line) { |
---|
1391 | img_errno = IMG_OUTOFMEMORY; |
---|
1392 | return img_BAD; |
---|
1393 | } |
---|
1394 | /* Compass stores coordinates as North, East, Up = (y,x,z)! */ |
---|
1395 | if (sscanf(line, "%lf%lf%lf", &p->y, &p->x, &p->z) != 3) { |
---|
1396 | osfree(line); |
---|
1397 | if (ferror(pimg->fh)) { |
---|
1398 | img_errno = IMG_READERROR; |
---|
1399 | } else { |
---|
1400 | img_errno = IMG_BADFORMAT; |
---|
1401 | } |
---|
1402 | return img_BAD; |
---|
1403 | } |
---|
1404 | p->x *= METRES_PER_FOOT; |
---|
1405 | p->y *= METRES_PER_FOOT; |
---|
1406 | p->z *= METRES_PER_FOOT; |
---|
1407 | q = strchr(line, 'S'); |
---|
1408 | if (!q) { |
---|
1409 | osfree(line); |
---|
1410 | img_errno = IMG_BADFORMAT; |
---|
1411 | return img_BAD; |
---|
1412 | } |
---|
1413 | ++q; |
---|
1414 | len = 0; |
---|
1415 | while (q[len] > ' ') ++len; |
---|
1416 | q[len] = '\0'; |
---|
1417 | len += 2; /* ' ' and '\0' */ |
---|
1418 | if (!check_label_space(pimg, pimg->label_len + len)) { |
---|
1419 | img_errno = IMG_OUTOFMEMORY; |
---|
1420 | return img_BAD; |
---|
1421 | } |
---|
1422 | pimg->label = pimg->label_buf; |
---|
1423 | if (pimg->label_len) { |
---|
1424 | pimg->label[pimg->label_len] = ' '; |
---|
1425 | memcpy(pimg->label + pimg->label_len + 1, q, len - 1); |
---|
1426 | } else { |
---|
1427 | memcpy(pimg->label, q, len - 1); |
---|
1428 | } |
---|
1429 | q += len - 1; |
---|
1430 | /* Now read LRUD. Technically, this is optional but virtually |
---|
1431 | * all PLT files have it (with dummy negative values if no LRUD |
---|
1432 | * was measured) and some versions of Compass can't read PLT |
---|
1433 | * files without it! |
---|
1434 | */ |
---|
1435 | while (*q && *q <= ' ') q++; |
---|
1436 | if (*q == 'P') { |
---|
1437 | if (sscanf(q + 1, "%lf%lf%lf%lf", |
---|
1438 | &pimg->l, &pimg->r, &pimg->u, &pimg->d) != 4) { |
---|
1439 | osfree(line); |
---|
1440 | if (ferror(pimg->fh)) { |
---|
1441 | img_errno = IMG_READERROR; |
---|
1442 | } else { |
---|
1443 | img_errno = IMG_BADFORMAT; |
---|
1444 | } |
---|
1445 | return img_BAD; |
---|
1446 | } |
---|
1447 | pimg->l *= METRES_PER_FOOT; |
---|
1448 | pimg->r *= METRES_PER_FOOT; |
---|
1449 | pimg->u *= METRES_PER_FOOT; |
---|
1450 | pimg->d *= METRES_PER_FOOT; |
---|
1451 | } else { |
---|
1452 | pimg->l = pimg->r = pimg->u = pimg->d = -1; |
---|
1453 | } |
---|
1454 | osfree(line); |
---|
1455 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1456 | if (fpos != -1) { |
---|
1457 | fseek(pimg->fh, fpos, SEEK_SET); |
---|
1458 | } else { |
---|
1459 | pimg->pending = (ch == 'M' ? img_MOVE : img_LINE) + 4; |
---|
1460 | } |
---|
1461 | return img_LABEL; |
---|
1462 | } |
---|
1463 | default: |
---|
1464 | img_errno = IMG_BADFORMAT; |
---|
1465 | return img_BAD; |
---|
1466 | } |
---|
1467 | } |
---|
1468 | } else { |
---|
1469 | /* CMAP .xyz file */ |
---|
1470 | char *line = NULL; |
---|
1471 | char *q; |
---|
1472 | size_t len; |
---|
1473 | |
---|
1474 | if (pimg->pending) { |
---|
1475 | /* pending MOVE or LINE or LABEL or STOP */ |
---|
1476 | int r = pimg->pending - 4; |
---|
1477 | /* Set label to empty - don't use "" as we adjust label relative |
---|
1478 | * to label_buf when label_buf is reallocated. */ |
---|
1479 | pimg->label = pimg->label_buf + strlen(pimg->label_buf); |
---|
1480 | pimg->flags = 0; |
---|
1481 | if (r == img_LABEL) { |
---|
1482 | /* nasty magic */ |
---|
1483 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
1484 | subtract_xyz_shot_deltas(p, pimg->label_buf + 16); |
---|
1485 | pimg->pending = img_STOP + 4; |
---|
1486 | return img_MOVE; |
---|
1487 | } |
---|
1488 | |
---|
1489 | pimg->pending = 0; |
---|
1490 | |
---|
1491 | if (r == img_STOP) { |
---|
1492 | /* nasty magic */ |
---|
1493 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
1494 | return img_LINE; |
---|
1495 | } |
---|
1496 | |
---|
1497 | return r; |
---|
1498 | } |
---|
1499 | |
---|
1500 | pimg->label = pimg->label_buf; |
---|
1501 | do { |
---|
1502 | osfree(line); |
---|
1503 | if (feof(pimg->fh)) return img_STOP; |
---|
1504 | line = getline_alloc(pimg->fh); |
---|
1505 | if (!line) { |
---|
1506 | img_errno = IMG_OUTOFMEMORY; |
---|
1507 | return img_BAD; |
---|
1508 | } |
---|
1509 | } while (line[0] == ' ' || line[0] == '\0'); |
---|
1510 | if (line[0] == '\x1a') return img_STOP; |
---|
1511 | |
---|
1512 | len = strlen(line); |
---|
1513 | if (pimg->version == VERSION_CMAP_STATION) { |
---|
1514 | /* station variant */ |
---|
1515 | if (len < 37) { |
---|
1516 | osfree(line); |
---|
1517 | img_errno = IMG_BADFORMAT; |
---|
1518 | return img_BAD; |
---|
1519 | } |
---|
1520 | memcpy(pimg->label, line, 6); |
---|
1521 | q = memchr(pimg->label, ' ', 6); |
---|
1522 | if (!q) q = pimg->label + 6; |
---|
1523 | *q = '\0'; |
---|
1524 | |
---|
1525 | read_xyz_station_coords(p, line); |
---|
1526 | |
---|
1527 | /* FIXME: look at prev for lines (line + 32, 5) */ |
---|
1528 | /* FIXME: duplicate stations... */ |
---|
1529 | return img_LABEL; |
---|
1530 | } else { |
---|
1531 | /* Shot variant */ |
---|
1532 | char old[8], new[8]; |
---|
1533 | if (len < 61) { |
---|
1534 | osfree(line); |
---|
1535 | img_errno = IMG_BADFORMAT; |
---|
1536 | return img_BAD; |
---|
1537 | } |
---|
1538 | |
---|
1539 | memcpy(old, line, 7); |
---|
1540 | q = memchr(old, ' ', 7); |
---|
1541 | if (!q) q = old + 7; |
---|
1542 | *q = '\0'; |
---|
1543 | |
---|
1544 | memcpy(new, line + 7, 7); |
---|
1545 | q = memchr(new, ' ', 7); |
---|
1546 | if (!q) q = new + 7; |
---|
1547 | *q = '\0'; |
---|
1548 | |
---|
1549 | pimg->flags = img_SFLAG_UNDERGROUND; |
---|
1550 | |
---|
1551 | if (strcmp(old, new) == 0) { |
---|
1552 | pimg->pending = img_MOVE + 4; |
---|
1553 | read_xyz_shot_coords(p, line); |
---|
1554 | strcpy(pimg->label, new); |
---|
1555 | osfree(line); |
---|
1556 | return img_LABEL; |
---|
1557 | } |
---|
1558 | |
---|
1559 | if (strcmp(old, pimg->label) == 0) { |
---|
1560 | pimg->pending = img_LINE + 4; |
---|
1561 | read_xyz_shot_coords(p, line); |
---|
1562 | strcpy(pimg->label, new); |
---|
1563 | osfree(line); |
---|
1564 | return img_LABEL; |
---|
1565 | } |
---|
1566 | |
---|
1567 | pimg->pending = img_LABEL + 4; |
---|
1568 | read_xyz_shot_coords(p, line); |
---|
1569 | strcpy(pimg->label, new); |
---|
1570 | memcpy(pimg->label + 16, line, 70); |
---|
1571 | |
---|
1572 | osfree(line); |
---|
1573 | return img_LABEL; |
---|
1574 | } |
---|
1575 | } |
---|
1576 | } |
---|
1577 | |
---|
1578 | static int |
---|
1579 | write_v3label(img *pimg, int opt, const char *s) |
---|
1580 | { |
---|
1581 | size_t len, n, dot; |
---|
1582 | |
---|
1583 | /* find length of common prefix */ |
---|
1584 | dot = 0; |
---|
1585 | for (len = 0; s[len] == pimg->label_buf[len] && s[len] != '\0'; len++) { |
---|
1586 | if (s[len] == '.') dot = len + 1; |
---|
1587 | } |
---|
1588 | |
---|
1589 | SVX_ASSERT(len <= pimg->label_len); |
---|
1590 | n = pimg->label_len - len; |
---|
1591 | if (len == 0) { |
---|
1592 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1593 | } else if (n <= 16) { |
---|
1594 | if (n) putc(n + 15, pimg->fh); |
---|
1595 | } else if (dot == 0) { |
---|
1596 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1597 | len = 0; |
---|
1598 | } else { |
---|
1599 | const char *p = pimg->label_buf + dot; |
---|
1600 | n = 1; |
---|
1601 | for (len = pimg->label_len - dot - 17; len; len--) { |
---|
1602 | if (*p++ == '.') n++; |
---|
1603 | } |
---|
1604 | if (n <= 14) { |
---|
1605 | putc(n, pimg->fh); |
---|
1606 | len = dot; |
---|
1607 | } else { |
---|
1608 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1609 | len = 0; |
---|
1610 | } |
---|
1611 | } |
---|
1612 | |
---|
1613 | n = strlen(s + len); |
---|
1614 | putc(opt, pimg->fh); |
---|
1615 | if (n < 0xfe) { |
---|
1616 | putc(n, pimg->fh); |
---|
1617 | } else if (n < 0xffff + 0xfe) { |
---|
1618 | putc(0xfe, pimg->fh); |
---|
1619 | put16((short)(n - 0xfe), pimg->fh); |
---|
1620 | } else { |
---|
1621 | putc(0xff, pimg->fh); |
---|
1622 | put32(n, pimg->fh); |
---|
1623 | } |
---|
1624 | fwrite(s + len, n, 1, pimg->fh); |
---|
1625 | |
---|
1626 | n += len; |
---|
1627 | pimg->label_len = n; |
---|
1628 | if (!check_label_space(pimg, n + 1)) |
---|
1629 | return 0; /* FIXME: distinguish out of memory... */ |
---|
1630 | memcpy(pimg->label_buf + len, s + len, n - len + 1); |
---|
1631 | |
---|
1632 | return !ferror(pimg->fh); |
---|
1633 | } |
---|
1634 | |
---|
1635 | static void |
---|
1636 | img_write_item_date(img *pimg) |
---|
1637 | { |
---|
1638 | if (pimg->date1 != pimg->olddate1 || |
---|
1639 | pimg->date2 != pimg->olddate2) { |
---|
1640 | /* Only write dates when they've changed. */ |
---|
1641 | if (pimg->date1 == pimg->date2) { |
---|
1642 | putc(0x20, pimg->fh); |
---|
1643 | put32(pimg->date1, pimg->fh); |
---|
1644 | } else { |
---|
1645 | putc(0x21, pimg->fh); |
---|
1646 | put32(pimg->date1, pimg->fh); |
---|
1647 | put32(pimg->date2, pimg->fh); |
---|
1648 | } |
---|
1649 | pimg->olddate1 = pimg->date1; |
---|
1650 | pimg->olddate2 = pimg->date2; |
---|
1651 | } |
---|
1652 | } |
---|
1653 | |
---|
1654 | void |
---|
1655 | img_write_item(img *pimg, int code, int flags, const char *s, |
---|
1656 | double x, double y, double z) |
---|
1657 | { |
---|
1658 | if (!pimg) return; |
---|
1659 | if (pimg->version >= 3) { |
---|
1660 | int opt = 0; |
---|
1661 | switch (code) { |
---|
1662 | case img_LABEL: |
---|
1663 | write_v3label(pimg, 0x40 | flags, s); |
---|
1664 | opt = 0; |
---|
1665 | break; |
---|
1666 | case img_XSECT: { |
---|
1667 | INT32_T l, r, u, d, max_dim; |
---|
1668 | /* Need at least version 5 for img_XSECT. */ |
---|
1669 | if (pimg->version < 5) break; |
---|
1670 | img_write_item_date(pimg); |
---|
1671 | l = (INT32_T)my_round(pimg->l * 100.0); |
---|
1672 | r = (INT32_T)my_round(pimg->r * 100.0); |
---|
1673 | u = (INT32_T)my_round(pimg->u * 100.0); |
---|
1674 | d = (INT32_T)my_round(pimg->d * 100.0); |
---|
1675 | if (l < 0) l = -1; |
---|
1676 | if (r < 0) r = -1; |
---|
1677 | if (u < 0) u = -1; |
---|
1678 | if (d < 0) d = -1; |
---|
1679 | max_dim = max(max(l, r), max(u, d)); |
---|
1680 | flags &= 1; |
---|
1681 | if (max_dim >= 32768) flags |= 2; |
---|
1682 | write_v3label(pimg, 0x30 | flags, s); |
---|
1683 | if (flags & 2) { |
---|
1684 | /* Big passage! Need to use 4 bytes. */ |
---|
1685 | put32(l, pimg->fh); |
---|
1686 | put32(r, pimg->fh); |
---|
1687 | put32(u, pimg->fh); |
---|
1688 | put32(d, pimg->fh); |
---|
1689 | } else { |
---|
1690 | put16(l, pimg->fh); |
---|
1691 | put16(r, pimg->fh); |
---|
1692 | put16(u, pimg->fh); |
---|
1693 | put16(d, pimg->fh); |
---|
1694 | } |
---|
1695 | return; |
---|
1696 | } |
---|
1697 | case img_MOVE: |
---|
1698 | opt = 15; |
---|
1699 | break; |
---|
1700 | case img_LINE: |
---|
1701 | if (pimg->version >= 4) { |
---|
1702 | img_write_item_date(pimg); |
---|
1703 | } |
---|
1704 | write_v3label(pimg, 0x80 | flags, s ? s : ""); |
---|
1705 | opt = 0; |
---|
1706 | break; |
---|
1707 | default: /* ignore for now */ |
---|
1708 | return; |
---|
1709 | } |
---|
1710 | if (opt) putc(opt, pimg->fh); |
---|
1711 | /* Output in cm */ |
---|
1712 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
1713 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
1714 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
1715 | } else { |
---|
1716 | size_t len; |
---|
1717 | INT32_T opt = 0; |
---|
1718 | SVX_ASSERT(pimg->version > 0); |
---|
1719 | switch (code) { |
---|
1720 | case img_LABEL: |
---|
1721 | if (pimg->version == 1) { |
---|
1722 | /* put a move before each label */ |
---|
1723 | img_write_item(pimg, img_MOVE, 0, NULL, x, y, z); |
---|
1724 | put32(2, pimg->fh); |
---|
1725 | fputsnl(s, pimg->fh); |
---|
1726 | return; |
---|
1727 | } |
---|
1728 | len = strlen(s); |
---|
1729 | if (len > 255 || strchr(s, '\n')) { |
---|
1730 | /* long label - not in early incarnations of v2 format, but few |
---|
1731 | * 3d files will need these, so better not to force incompatibility |
---|
1732 | * with a new version I think... */ |
---|
1733 | putc(7, pimg->fh); |
---|
1734 | putc(flags, pimg->fh); |
---|
1735 | put32(len, pimg->fh); |
---|
1736 | fputs(s, pimg->fh); |
---|
1737 | } else { |
---|
1738 | putc(0x40 | (flags & 0x3f), pimg->fh); |
---|
1739 | fputsnl(s, pimg->fh); |
---|
1740 | } |
---|
1741 | opt = 0; |
---|
1742 | break; |
---|
1743 | case img_MOVE: |
---|
1744 | opt = 4; |
---|
1745 | break; |
---|
1746 | case img_LINE: |
---|
1747 | if (pimg->version > 1) { |
---|
1748 | opt = 0x80 | (flags & 0x3f); |
---|
1749 | break; |
---|
1750 | } |
---|
1751 | opt = 5; |
---|
1752 | break; |
---|
1753 | default: /* ignore for now */ |
---|
1754 | return; |
---|
1755 | } |
---|
1756 | if (pimg->version == 1) { |
---|
1757 | put32(opt, pimg->fh); |
---|
1758 | } else { |
---|
1759 | if (opt) putc(opt, pimg->fh); |
---|
1760 | } |
---|
1761 | /* Output in cm */ |
---|
1762 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
1763 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
1764 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
1765 | } |
---|
1766 | } |
---|
1767 | |
---|
1768 | /* Write error information for the current traverse |
---|
1769 | * n_legs is the number of legs in the traverse |
---|
1770 | * length is the traverse length (in m) |
---|
1771 | * E is the ratio of the observed misclosure to the theoretical one |
---|
1772 | * H is the ratio of the observed horizontal misclosure to the theoretical one |
---|
1773 | * V is the ratio of the observed vertical misclosure to the theoretical one |
---|
1774 | */ |
---|
1775 | void |
---|
1776 | img_write_errors(img *pimg, int n_legs, double length, |
---|
1777 | double E, double H, double V) |
---|
1778 | { |
---|
1779 | putc(0x22, pimg->fh); |
---|
1780 | put32(n_legs, pimg->fh); |
---|
1781 | put32((INT32_T)my_round(length * 100.0), pimg->fh); |
---|
1782 | put32((INT32_T)my_round(E * 100.0), pimg->fh); |
---|
1783 | put32((INT32_T)my_round(H * 100.0), pimg->fh); |
---|
1784 | put32((INT32_T)my_round(V * 100.0), pimg->fh); |
---|
1785 | } |
---|
1786 | |
---|
1787 | int |
---|
1788 | img_close(img *pimg) |
---|
1789 | { |
---|
1790 | int result = 1; |
---|
1791 | if (pimg) { |
---|
1792 | if (pimg->fh) { |
---|
1793 | if (pimg->fRead) { |
---|
1794 | osfree(pimg->survey); |
---|
1795 | osfree(pimg->title); |
---|
1796 | osfree(pimg->datestamp); |
---|
1797 | } else { |
---|
1798 | /* write end of data marker */ |
---|
1799 | switch (pimg->version) { |
---|
1800 | case 1: |
---|
1801 | put32((INT32_T)-1, pimg->fh); |
---|
1802 | break; |
---|
1803 | case 2: |
---|
1804 | putc(0, pimg->fh); |
---|
1805 | break; |
---|
1806 | default: |
---|
1807 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1808 | putc(0, pimg->fh); |
---|
1809 | break; |
---|
1810 | } |
---|
1811 | } |
---|
1812 | if (ferror(pimg->fh)) result = 0; |
---|
1813 | if (fclose(pimg->fh)) result = 0; |
---|
1814 | if (!result) img_errno = pimg->fRead ? IMG_READERROR : IMG_WRITEERROR; |
---|
1815 | } |
---|
1816 | osfree(pimg->label_buf); |
---|
1817 | osfree(pimg->filename_opened); |
---|
1818 | osfree(pimg); |
---|
1819 | } |
---|
1820 | return result; |
---|
1821 | } |
---|