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 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 | #ifndef IMG_API_VERSION |
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34 | # define IMG_API_VERSION 0 |
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35 | #elif IMG_API_VERSION > 1 |
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36 | # error IMG_API_VERSION > 1 too new |
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37 | #endif |
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38 | |
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39 | #ifdef IMG_HOSTED |
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40 | # include "debug.h" |
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41 | # include "filelist.h" |
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42 | # include "filename.h" |
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43 | # include "message.h" |
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44 | # include "useful.h" |
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45 | # define TIMENA msg(/*Date and time not available.*/108) |
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46 | # define TIMEFMT msg(/*%a,%Y.%m.%d %H:%M:%S %Z*/107) |
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47 | # ifndef INT32_T |
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48 | # define INT32_T int32_t |
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49 | # endif |
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50 | #else |
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51 | # define INT32_T int |
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52 | # define TIMENA "Time not available." |
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53 | # define TIMEFMT "%a,%Y.%m.%d %H:%M:%S %Z" |
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54 | # define EXT_SVX_3D "3d" |
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55 | # define EXT_SVX_POS "pos" |
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56 | # define FNM_SEP_EXT '.' |
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57 | # define METRES_PER_FOOT 0.3048 /* exact value */ |
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58 | # define xosmalloc(L) malloc((L)) |
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59 | # define xosrealloc(L,S) realloc((L),(S)) |
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60 | # define osfree(P) free((P)) |
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61 | # define ossizeof(T) sizeof(T) |
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62 | /* in IMG_HOSTED mode, this tests if a filename refers to a directory */ |
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63 | # define fDirectory(X) 0 |
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64 | /* open file FNM with mode MODE, maybe using path PTH and/or extension EXT */ |
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65 | /* path isn't used in img.c, but EXT is */ |
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66 | # define fopenWithPthAndExt(PTH,FNM,EXT,MODE,X) fopen(FNM,MODE) |
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67 | # define PUTC(C, FH) putc(C, FH) |
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68 | # define GETC(FH) getc(FH) |
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69 | # define fFalse 0 |
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70 | # define fTrue 1 |
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71 | # define bool int |
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72 | /* dummy do {...} while(0) hack to permit stuff like |
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73 | * if (s) fputsnl(s,fh); else exit(1); |
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74 | * to work as intended |
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75 | */ |
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76 | # define fputsnl(S, FH) do {fputs((S), (FH)); PUTC('\n', (FH));} while(0) |
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77 | # define SVX_ASSERT(X) |
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78 | |
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79 | static INT32_T |
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80 | get32(FILE *fh) |
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81 | { |
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82 | INT32_T w = GETC(fh); |
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83 | w |= (INT32_T)GETC(fh) << 8l; |
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84 | w |= (INT32_T)GETC(fh) << 16l; |
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85 | w |= (INT32_T)GETC(fh) << 24l; |
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86 | return w; |
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87 | } |
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88 | |
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89 | static void |
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90 | put32(long w, FILE *fh) |
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91 | { |
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92 | PUTC((char)(w), fh); |
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93 | PUTC((char)(w >> 8l), fh); |
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94 | PUTC((char)(w >> 16l), fh); |
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95 | PUTC((char)(w >> 24l), fh); |
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96 | } |
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97 | |
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98 | static short |
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99 | get16(FILE *fh) |
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100 | { |
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101 | short w = GETC(fh); |
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102 | w |= (short)GETC(fh) << 8l; |
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103 | return w; |
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104 | } |
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105 | |
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106 | static void |
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107 | put16(short w, FILE *fh) |
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108 | { |
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109 | PUTC((char)(w), fh); |
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110 | PUTC((char)(w >> 8l), fh); |
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111 | } |
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112 | |
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113 | static char * |
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114 | baseleaf_from_fnm(const char *fnm) |
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115 | { |
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116 | const char *p; |
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117 | char *q; |
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118 | size_t len; |
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119 | |
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120 | p = fnm; |
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121 | q = strrchr(p, '/'); |
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122 | if (q) p = q + 1; |
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123 | q = strrchr(p, '\\'); |
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124 | if (q) p = q + 1; |
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125 | |
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126 | q = strrchr(p, FNM_SEP_EXT); |
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127 | if (q) len = (const char *)q - p; else len = strlen(p); |
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128 | |
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129 | q = xosmalloc(len + 1); |
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130 | if (!q) return NULL; |
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131 | memcpy(q, p, len); |
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132 | q[len] = '\0'; |
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133 | return q; |
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134 | } |
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135 | #endif |
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136 | |
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137 | static unsigned short |
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138 | getu16(FILE *fh) |
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139 | { |
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140 | return (unsigned short)get16(fh); |
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141 | } |
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142 | |
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143 | #include <math.h> |
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144 | #ifdef HAVE_ROUND |
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145 | extern double round(double); /* prototype is often missing... */ |
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146 | # define my_round round |
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147 | #else |
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148 | static double |
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149 | my_round(double x) { |
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150 | if (x >= 0.0) return floor(x + 0.5); |
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151 | return ceil(x - 0.5); |
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152 | } |
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153 | #endif |
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154 | |
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155 | /* portable case insensitive string compare */ |
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156 | #if defined(strcasecmp) || defined(HAVE_STRCASECMP) |
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157 | # define my_strcasecmp strcasecmp |
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158 | #else |
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159 | /* What about top bit set chars? */ |
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160 | int my_strcasecmp(const char *s1, const char *s2) { |
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161 | register int c1, c2; |
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162 | do { |
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163 | c1 = *s1++; |
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164 | c2 = *s2++; |
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165 | } while (c1 && toupper(c1) == toupper(c2)); |
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166 | /* now calculate real difference */ |
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167 | return c1 - c2; |
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168 | } |
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169 | #endif |
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170 | |
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171 | unsigned int img_output_version = IMG_VERSION_MAX; |
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172 | |
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173 | #ifdef IMG_HOSTED |
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174 | static enum { |
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175 | IMG_NONE = 0, |
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176 | IMG_FILENOTFOUND = /*Couldn't open data file `%s'*/24, |
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177 | IMG_OUTOFMEMORY = /*Out of memory %.0s*/38, |
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178 | IMG_DIRECTORY = /*Filename `%s' refers to directory*/44, |
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179 | IMG_CANTOPENOUT = /*Failed to open output file `%s'*/47, |
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180 | IMG_BADFORMAT = /*Bad 3d image file `%s'*/106, |
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181 | IMG_READERROR = /*Error reading from file `%s'*/109, |
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182 | IMG_WRITEERROR = /*Error writing to file `%s'*/110, |
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183 | IMG_TOONEW = /*File `%s' has a newer format than this program can understand*/114 |
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184 | } img_errno = IMG_NONE; |
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185 | #else |
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186 | static img_errcode img_errno = IMG_NONE; |
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187 | #endif |
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188 | |
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189 | #define FILEID "Survex 3D Image File" |
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190 | |
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191 | #define EXT_PLT "plt" |
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192 | #define EXT_PLF "plf" |
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193 | #define EXT_XYZ "xyz" |
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194 | |
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195 | /* Attempt to string paste to ensure we are passed a literal string */ |
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196 | #define LITLEN(S) (sizeof(S"") - 1) |
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197 | |
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198 | /* Fake "version numbers" for non-3d formats we can read. */ |
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199 | #define VERSION_CMAP_SHOT -4 |
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200 | #define VERSION_CMAP_STATION -3 |
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201 | #define VERSION_COMPASS_PLT -2 |
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202 | #define VERSION_SURVEX_POS -1 |
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203 | |
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204 | static char * |
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205 | my_strdup(const char *str) |
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206 | { |
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207 | char *p; |
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208 | size_t len = strlen(str) + 1; |
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209 | p = xosmalloc(len); |
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210 | if (p) memcpy(p, str, len); |
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211 | return p; |
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212 | } |
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213 | |
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214 | static char * |
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215 | getline_alloc(FILE *fh) |
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216 | { |
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217 | int ch; |
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218 | size_t i = 0; |
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219 | size_t len = 16; |
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220 | char *buf = xosmalloc(len); |
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221 | if (!buf) return NULL; |
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222 | |
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223 | ch = GETC(fh); |
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224 | while (ch != '\n' && ch != '\r' && ch != EOF) { |
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225 | buf[i++] = ch; |
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226 | if (i == len - 1) { |
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227 | char *p; |
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228 | len += len; |
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229 | p = xosrealloc(buf, len); |
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230 | if (!p) { |
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231 | osfree(buf); |
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232 | return NULL; |
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233 | } |
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234 | buf = p; |
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235 | } |
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236 | ch = GETC(fh); |
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237 | } |
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238 | if (ch == '\n' || ch == '\r') { |
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239 | int otherone = ch ^ ('\n' ^ '\r'); |
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240 | ch = GETC(fh); |
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241 | /* if it's not the other eol character, put it back */ |
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242 | if (ch != otherone) ungetc(ch, fh); |
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243 | } |
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244 | buf[i++] = '\0'; |
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245 | return buf; |
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246 | } |
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247 | |
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248 | #ifndef IMG_HOSTED |
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249 | img_errcode |
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250 | img_error(void) |
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251 | { |
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252 | return img_errno; |
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253 | } |
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254 | #else |
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255 | int |
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256 | img_error(void) |
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257 | { |
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258 | return (int)img_errno; |
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259 | } |
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260 | #endif |
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261 | |
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262 | static bool |
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263 | check_label_space(img *pimg, size_t len) |
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264 | { |
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265 | if (len > pimg->buf_len) { |
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266 | char *b = xosrealloc(pimg->label_buf, len); |
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267 | if (!b) return fFalse; |
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268 | pimg->label = (pimg->label - pimg->label_buf) + b; |
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269 | pimg->label_buf = b; |
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270 | pimg->buf_len = len; |
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271 | } |
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272 | return fTrue; |
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273 | } |
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274 | |
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275 | #define has_ext(F,L,E) ((L) > LITLEN(E) + 1 &&\ |
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276 | (F)[(L) - LITLEN(E) - 1] == FNM_SEP_EXT &&\ |
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277 | my_strcasecmp((F) + (L) - LITLEN(E), E) == 0) |
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278 | |
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279 | img * |
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280 | img_open_survey(const char *fnm, const char *survey) |
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281 | { |
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282 | img *pimg; |
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283 | size_t len; |
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284 | char buf[LITLEN(FILEID) + 9]; |
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285 | int ch; |
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286 | |
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287 | if (fDirectory(fnm)) { |
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288 | img_errno = IMG_DIRECTORY; |
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289 | return NULL; |
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290 | } |
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291 | |
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292 | pimg = (img *)xosmalloc(ossizeof(img)); |
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293 | if (pimg == NULL) { |
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294 | img_errno = IMG_OUTOFMEMORY; |
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295 | return NULL; |
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296 | } |
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297 | |
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298 | pimg->buf_len = 257; |
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299 | pimg->label_buf = xosmalloc(pimg->buf_len); |
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300 | if (!pimg->label_buf) { |
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301 | osfree(pimg); |
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302 | img_errno = IMG_OUTOFMEMORY; |
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303 | return NULL; |
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304 | } |
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305 | |
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306 | pimg->fh = fopenWithPthAndExt("", fnm, EXT_SVX_3D, "rb", &(pimg->filename_opened)); |
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307 | if (pimg->fh == NULL) { |
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308 | osfree(pimg->label_buf); |
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309 | osfree(pimg); |
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310 | img_errno = IMG_FILENOTFOUND; |
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311 | return NULL; |
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312 | } |
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313 | |
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314 | pimg->fRead = fTrue; /* reading from this file */ |
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315 | img_errno = IMG_NONE; |
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316 | |
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317 | pimg->flags = 0; |
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318 | |
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319 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
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320 | /* for VERSION_COMPASS_PLT, 0 value indicates we haven't |
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321 | * entered a survey yet */ |
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322 | /* for VERSION_CMAP_SHOT, we store the last station here |
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323 | * to detect whether we MOVE or LINE */ |
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324 | pimg->label_len = 0; |
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325 | pimg->label_buf[0] = '\0'; |
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326 | |
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327 | pimg->survey = NULL; |
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328 | pimg->survey_len = 0; |
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329 | pimg->separator = '.'; |
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330 | #if IMG_API_VERSION == 0 |
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331 | pimg->date1 = pimg->date2 = 0; |
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332 | #else /* IMG_API_VERSION == 1 */ |
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333 | pimg->days1 = pimg->days2 = -1; |
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334 | #endif |
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335 | pimg->is_extended_elevation = 0; |
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336 | |
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337 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
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338 | |
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339 | pimg->title = pimg->datestamp = NULL; |
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340 | if (survey) { |
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341 | len = strlen(survey); |
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342 | if (len) { |
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343 | if (survey[len - 1] == '.') len--; |
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344 | if (len) { |
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345 | char *p; |
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346 | pimg->survey = xosmalloc(len + 2); |
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347 | if (!pimg->survey) { |
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348 | img_errno = IMG_OUTOFMEMORY; |
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349 | goto error; |
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350 | } |
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351 | memcpy(pimg->survey, survey, len); |
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352 | /* Set title to leaf survey name */ |
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353 | pimg->survey[len] = '\0'; |
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354 | p = strchr(pimg->survey, '.'); |
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355 | if (p) p++; else p = pimg->survey; |
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356 | pimg->title = my_strdup(p); |
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357 | if (!pimg->title) { |
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358 | img_errno = IMG_OUTOFMEMORY; |
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359 | goto error; |
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360 | } |
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361 | pimg->survey[len] = '.'; |
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362 | pimg->survey[len + 1] = '\0'; |
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363 | } |
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364 | } |
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365 | pimg->survey_len = len; |
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366 | } |
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367 | |
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368 | /* [VERSION_COMPASS_PLT, VERSION_CMAP_STATION, VERSION_CMAP_SHOT] pending |
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369 | * IMG_LINE or IMG_MOVE - both have 4 added. |
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370 | * [VERSION_SURVEX_POS] already skipped heading line, or there wasn't one |
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371 | * [version 0] not in the middle of a 'LINE' command |
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372 | * [version >= 3] not in the middle of turning a LINE into a MOVE |
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373 | */ |
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374 | pimg->pending = 0; |
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375 | |
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376 | len = strlen(fnm); |
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377 | if (has_ext(fnm, len, EXT_SVX_POS)) { |
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378 | pos_file: |
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379 | pimg->version = VERSION_SURVEX_POS; |
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380 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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381 | pimg->datestamp = my_strdup(TIMENA); |
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382 | if (!pimg->datestamp) { |
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383 | img_errno = IMG_OUTOFMEMORY; |
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384 | goto error; |
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385 | } |
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386 | pimg->start = 0; |
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387 | return pimg; |
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388 | } |
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389 | |
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390 | if (has_ext(fnm, len, EXT_PLT) || has_ext(fnm, len, EXT_PLF)) { |
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391 | long fpos; |
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392 | plt_file: |
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393 | pimg->version = VERSION_COMPASS_PLT; |
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394 | /* Spaces aren't legal in Compass station names, but dots are, so |
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395 | * use space as the level separator */ |
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396 | pimg->separator = ' '; |
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397 | pimg->start = 0; |
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398 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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399 | pimg->datestamp = my_strdup(TIMENA); |
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400 | if (!pimg->datestamp) { |
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401 | img_errno = IMG_OUTOFMEMORY; |
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402 | goto error; |
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403 | } |
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404 | while (1) { |
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405 | ch = GETC(pimg->fh); |
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406 | switch (ch) { |
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407 | case '\x1a': |
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408 | fseek(pimg->fh, -1, SEEK_CUR); |
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409 | /* FALL THRU */ |
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410 | case EOF: |
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411 | pimg->start = ftell(pimg->fh); |
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412 | return pimg; |
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413 | case 'N': { |
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414 | char *line, *q; |
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415 | fpos = ftell(pimg->fh) - 1; |
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416 | if (!pimg->survey) { |
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417 | /* FIXME : if there's only one survey in the file, it'd be nice |
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418 | * to use its description as the title here... |
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419 | */ |
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420 | ungetc('N', pimg->fh); |
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421 | pimg->start = fpos; |
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422 | return pimg; |
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423 | } |
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424 | line = getline_alloc(pimg->fh); |
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425 | if (!line) { |
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426 | img_errno = IMG_OUTOFMEMORY; |
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427 | goto error; |
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428 | } |
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429 | len = 0; |
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430 | while (line[len] > 32) ++len; |
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431 | if (pimg->survey_len != len || |
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432 | memcmp(line, pimg->survey, len) != 0) { |
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433 | osfree(line); |
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434 | continue; |
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435 | } |
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436 | q = strchr(line + len, 'C'); |
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437 | if (q && q[1]) { |
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438 | osfree(pimg->title); |
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439 | pimg->title = my_strdup(q + 1); |
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440 | } else if (!pimg->title) { |
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441 | pimg->title = my_strdup(pimg->label); |
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442 | } |
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443 | osfree(line); |
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444 | if (!pimg->title) { |
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445 | img_errno = IMG_OUTOFMEMORY; |
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446 | goto error; |
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447 | } |
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448 | if (!pimg->start) pimg->start = fpos; |
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449 | fseek(pimg->fh, pimg->start, SEEK_SET); |
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450 | return pimg; |
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451 | } |
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452 | case 'M': case 'D': |
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453 | pimg->start = ftell(pimg->fh) - 1; |
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454 | break; |
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455 | } |
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456 | while (ch != '\n' && ch != '\r') { |
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457 | ch = GETC(pimg->fh); |
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458 | } |
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459 | } |
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460 | } |
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461 | |
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462 | if (has_ext(fnm, len, EXT_XYZ)) { |
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463 | char *line; |
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464 | xyz_file: |
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465 | /* Spaces aren't legal in CMAP station names, but dots are, so |
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466 | * use space as the level separator. */ |
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467 | pimg->separator = ' '; |
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468 | line = getline_alloc(pimg->fh); |
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469 | if (!line) { |
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470 | img_errno = IMG_OUTOFMEMORY; |
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471 | goto error; |
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472 | } |
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473 | /* FIXME: reparse date? */ |
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474 | len = strlen(line); |
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475 | if (len > 59) line[59] = '\0'; |
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476 | if (len > 45) { |
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477 | pimg->datestamp = my_strdup(line + 45); |
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478 | } else { |
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479 | pimg->datestamp = my_strdup(TIMENA); |
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480 | } |
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481 | if (strncmp(line, " Cave Survey Data Processed by CMAP ", |
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482 | LITLEN(" Cave Survey Data Processed by CMAP ")) == 0) { |
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483 | len = 0; |
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484 | } else { |
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485 | if (len > 45) { |
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486 | line[45] = '\0'; |
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487 | len = 45; |
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488 | } |
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489 | while (len > 2 && line[len - 1] == ' ') --len; |
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490 | if (len > 2) { |
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491 | line[len] = '\0'; |
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492 | pimg->title = my_strdup(line + 2); |
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493 | } |
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494 | } |
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495 | if (len <= 2) pimg->title = baseleaf_from_fnm(fnm); |
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496 | osfree(line); |
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497 | if (!pimg->datestamp || !pimg->title) { |
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498 | img_errno = IMG_OUTOFMEMORY; |
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499 | goto error; |
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500 | } |
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501 | line = getline_alloc(pimg->fh); |
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502 | if (!line) { |
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503 | img_errno = IMG_OUTOFMEMORY; |
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504 | goto error; |
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505 | } |
---|
506 | if (line[0] != ' ' || (line[1] != 'S' && line[1] != 'O')) { |
---|
507 | img_errno = IMG_BADFORMAT; |
---|
508 | goto error; |
---|
509 | } |
---|
510 | if (line[1] == 'S') { |
---|
511 | pimg->version = VERSION_CMAP_STATION; |
---|
512 | } else { |
---|
513 | pimg->version = VERSION_CMAP_SHOT; |
---|
514 | } |
---|
515 | osfree(line); |
---|
516 | line = getline_alloc(pimg->fh); |
---|
517 | if (!line) { |
---|
518 | img_errno = IMG_OUTOFMEMORY; |
---|
519 | goto error; |
---|
520 | } |
---|
521 | if (line[0] != ' ' || line[1] != '-') { |
---|
522 | img_errno = IMG_BADFORMAT; |
---|
523 | goto error; |
---|
524 | } |
---|
525 | osfree(line); |
---|
526 | pimg->start = ftell(pimg->fh); |
---|
527 | return pimg; |
---|
528 | } |
---|
529 | |
---|
530 | if (fread(buf, LITLEN(FILEID) + 1, 1, pimg->fh) != 1 || |
---|
531 | memcmp(buf, FILEID"\n", LITLEN(FILEID) + 1) != 0) { |
---|
532 | if (fread(buf + LITLEN(FILEID) + 1, 8, 1, pimg->fh) == 1 && |
---|
533 | memcmp(buf, FILEID"\r\nv0.01\r\n", LITLEN(FILEID) + 9) == 0) { |
---|
534 | /* v0 3d file with DOS EOLs */ |
---|
535 | pimg->version = 0; |
---|
536 | goto v03d; |
---|
537 | } |
---|
538 | rewind(pimg->fh); |
---|
539 | if (buf[1] == ' ') { |
---|
540 | if (buf[0] == ' ') { |
---|
541 | /* Looks like a CMAP .xyz file ... */ |
---|
542 | goto xyz_file; |
---|
543 | } else if (strchr("ZSNF", buf[0])) { |
---|
544 | /* Looks like a Compass .plt file ... */ |
---|
545 | /* Almost certainly it'll start "Z " */ |
---|
546 | goto plt_file; |
---|
547 | } |
---|
548 | } |
---|
549 | if (buf[0] == '(') { |
---|
550 | /* Looks like a Survex .pos file ... */ |
---|
551 | goto pos_file; |
---|
552 | } |
---|
553 | img_errno = IMG_BADFORMAT; |
---|
554 | goto error; |
---|
555 | } |
---|
556 | |
---|
557 | /* check file format version */ |
---|
558 | ch = GETC(pimg->fh); |
---|
559 | pimg->version = 0; |
---|
560 | if (tolower(ch) == 'b') { |
---|
561 | /* binary file iff B/b prefix */ |
---|
562 | pimg->version = 1; |
---|
563 | ch = GETC(pimg->fh); |
---|
564 | } |
---|
565 | if (ch != 'v') { |
---|
566 | img_errno = IMG_BADFORMAT; |
---|
567 | goto error; |
---|
568 | } |
---|
569 | ch = GETC(pimg->fh); |
---|
570 | if (ch == '0') { |
---|
571 | if (fread(buf, 4, 1, pimg->fh) != 1 || memcmp(buf, ".01\n", 4) != 0) { |
---|
572 | img_errno = IMG_BADFORMAT; |
---|
573 | goto error; |
---|
574 | } |
---|
575 | /* nothing special to do */ |
---|
576 | } else if (pimg->version == 0) { |
---|
577 | if (ch < '2' || ch > '0' + IMG_VERSION_MAX || GETC(pimg->fh) != '\n') { |
---|
578 | img_errno = IMG_TOONEW; |
---|
579 | goto error; |
---|
580 | } |
---|
581 | pimg->version = ch - '0'; |
---|
582 | } else { |
---|
583 | img_errno = IMG_BADFORMAT; |
---|
584 | goto error; |
---|
585 | } |
---|
586 | |
---|
587 | v03d: |
---|
588 | if (!pimg->title) |
---|
589 | pimg->title = getline_alloc(pimg->fh); |
---|
590 | else |
---|
591 | osfree(getline_alloc(pimg->fh)); |
---|
592 | pimg->datestamp = getline_alloc(pimg->fh); |
---|
593 | if (!pimg->title || !pimg->datestamp) { |
---|
594 | img_errno = IMG_OUTOFMEMORY; |
---|
595 | error: |
---|
596 | osfree(pimg->title); |
---|
597 | osfree(pimg->datestamp); |
---|
598 | osfree(pimg->filename_opened); |
---|
599 | fclose(pimg->fh); |
---|
600 | osfree(pimg); |
---|
601 | return NULL; |
---|
602 | } |
---|
603 | |
---|
604 | pimg->start = ftell(pimg->fh); |
---|
605 | |
---|
606 | len = strlen(pimg->title); |
---|
607 | if (len > 11 && strcmp(pimg->title + len - 11, " (extended)") == 0) { |
---|
608 | pimg->title[len - 11] = '\0'; |
---|
609 | pimg->is_extended_elevation = 1; |
---|
610 | } |
---|
611 | |
---|
612 | return pimg; |
---|
613 | } |
---|
614 | |
---|
615 | int |
---|
616 | img_rewind(img *pimg) |
---|
617 | { |
---|
618 | if (!pimg->fRead) { |
---|
619 | img_errno = IMG_WRITEERROR; |
---|
620 | return 0; |
---|
621 | } |
---|
622 | if (fseek(pimg->fh, pimg->start, SEEK_SET) != 0) { |
---|
623 | img_errno = IMG_READERROR; |
---|
624 | return 0; |
---|
625 | } |
---|
626 | clearerr(pimg->fh); |
---|
627 | /* [VERSION_SURVEX_POS] already skipped heading line, or there wasn't one |
---|
628 | * [version 0] not in the middle of a 'LINE' command |
---|
629 | * [version >= 3] not in the middle of turning a LINE into a MOVE */ |
---|
630 | pimg->pending = 0; |
---|
631 | |
---|
632 | img_errno = IMG_NONE; |
---|
633 | |
---|
634 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
---|
635 | /* for VERSION_COMPASS_PLT, 0 value indicates we haven't entered a survey |
---|
636 | * yet */ |
---|
637 | /* for VERSION_CMAP_SHOT, we store the last station here to detect whether |
---|
638 | * we MOVE or LINE */ |
---|
639 | pimg->label_len = 0; |
---|
640 | return 1; |
---|
641 | } |
---|
642 | |
---|
643 | img * |
---|
644 | img_open_write(const char *fnm, char *title_buf, bool fBinary) |
---|
645 | { |
---|
646 | time_t tm; |
---|
647 | img *pimg; |
---|
648 | |
---|
649 | fBinary = fBinary; |
---|
650 | |
---|
651 | if (fDirectory(fnm)) { |
---|
652 | img_errno = IMG_DIRECTORY; |
---|
653 | return NULL; |
---|
654 | } |
---|
655 | |
---|
656 | pimg = (img *)xosmalloc(ossizeof(img)); |
---|
657 | if (pimg == NULL) { |
---|
658 | img_errno = IMG_OUTOFMEMORY; |
---|
659 | return NULL; |
---|
660 | } |
---|
661 | |
---|
662 | pimg->buf_len = 257; |
---|
663 | pimg->label_buf = xosmalloc(pimg->buf_len); |
---|
664 | if (!pimg->label_buf) { |
---|
665 | osfree(pimg); |
---|
666 | img_errno = IMG_OUTOFMEMORY; |
---|
667 | return NULL; |
---|
668 | } |
---|
669 | |
---|
670 | pimg->fh = fopen(fnm, "wb"); |
---|
671 | if (!pimg->fh) { |
---|
672 | osfree(pimg->label_buf); |
---|
673 | osfree(pimg); |
---|
674 | img_errno = IMG_CANTOPENOUT; |
---|
675 | return NULL; |
---|
676 | } |
---|
677 | |
---|
678 | pimg->filename_opened = NULL; |
---|
679 | |
---|
680 | /* Output image file header */ |
---|
681 | fputs("Survex 3D Image File\n", pimg->fh); /* file identifier string */ |
---|
682 | if (img_output_version < 2) { |
---|
683 | pimg->version = 1; |
---|
684 | fputs("Bv0.01\n", pimg->fh); /* binary file format version number */ |
---|
685 | } else { |
---|
686 | pimg->version = (img_output_version > IMG_VERSION_MAX) ? IMG_VERSION_MAX : img_output_version; |
---|
687 | fprintf(pimg->fh, "v%d\n", pimg->version); /* file format version no. */ |
---|
688 | } |
---|
689 | fputsnl(title_buf, pimg->fh); |
---|
690 | tm = time(NULL); |
---|
691 | if (tm == (time_t)-1) { |
---|
692 | fputsnl(TIMENA, pimg->fh); |
---|
693 | } else { |
---|
694 | char date[256]; |
---|
695 | /* output current date and time in format specified */ |
---|
696 | strftime(date, 256, TIMEFMT, localtime(&tm)); |
---|
697 | fputsnl(date, pimg->fh); |
---|
698 | } |
---|
699 | #if 0 |
---|
700 | if (img_output_version >= 5) { |
---|
701 | static const unsigned char codelengths[32] = { |
---|
702 | 4, 8, 8, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
---|
703 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
---|
704 | }; |
---|
705 | fwrite(codelengths, 32, 1, pimg->fh); |
---|
706 | } |
---|
707 | #endif |
---|
708 | pimg->fRead = fFalse; /* writing to this file */ |
---|
709 | img_errno = IMG_NONE; |
---|
710 | |
---|
711 | /* for version >= 3 we use label_buf to store the prefix for reuse */ |
---|
712 | pimg->label_buf[0] = '\0'; |
---|
713 | pimg->label_len = 0; |
---|
714 | |
---|
715 | #if IMG_API_VERSION == 0 |
---|
716 | pimg->date1 = pimg->date2 = 0; |
---|
717 | pimg->olddate1 = pimg->olddate2 = 0; |
---|
718 | #else /* IMG_API_VERSION == 1 */ |
---|
719 | pimg->days1 = pimg->days2 = -1; |
---|
720 | pimg->olddays1 = pimg->olddays2 = -1; |
---|
721 | #endif |
---|
722 | |
---|
723 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
724 | |
---|
725 | pimg->n_legs = 0; |
---|
726 | pimg->length = 0.0; |
---|
727 | pimg->E = pimg->H = pimg->V = 0.0; |
---|
728 | |
---|
729 | /* Don't check for write errors now - let img_close() report them... */ |
---|
730 | return pimg; |
---|
731 | } |
---|
732 | |
---|
733 | static void |
---|
734 | read_xyz_station_coords(img_point *pt, const char *line) |
---|
735 | { |
---|
736 | char num[12]; |
---|
737 | memcpy(num, line + 6, 9); |
---|
738 | num[9] = '\0'; |
---|
739 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
740 | memcpy(num, line + 15, 9); |
---|
741 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
742 | memcpy(num, line + 24, 8); |
---|
743 | num[8] = '\0'; |
---|
744 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
745 | } |
---|
746 | |
---|
747 | static void |
---|
748 | read_xyz_shot_coords(img_point *pt, const char *line) |
---|
749 | { |
---|
750 | char num[12]; |
---|
751 | memcpy(num, line + 40, 10); |
---|
752 | num[10] = '\0'; |
---|
753 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
754 | memcpy(num, line + 50, 10); |
---|
755 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
756 | memcpy(num, line + 60, 9); |
---|
757 | num[9] = '\0'; |
---|
758 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
759 | } |
---|
760 | |
---|
761 | static void |
---|
762 | subtract_xyz_shot_deltas(img_point *pt, const char *line) |
---|
763 | { |
---|
764 | char num[12]; |
---|
765 | memcpy(num, line + 15, 9); |
---|
766 | num[9] = '\0'; |
---|
767 | pt->x -= atof(num) / METRES_PER_FOOT; |
---|
768 | memcpy(num, line + 24, 8); |
---|
769 | num[8] = '\0'; |
---|
770 | pt->y -= atof(num) / METRES_PER_FOOT; |
---|
771 | memcpy(num, line + 32, 8); |
---|
772 | pt->z -= atof(num) / METRES_PER_FOOT; |
---|
773 | } |
---|
774 | |
---|
775 | static int |
---|
776 | read_coord(FILE *fh, img_point *pt) |
---|
777 | { |
---|
778 | SVX_ASSERT(fh); |
---|
779 | SVX_ASSERT(pt); |
---|
780 | pt->x = get32(fh) / 100.0; |
---|
781 | pt->y = get32(fh) / 100.0; |
---|
782 | pt->z = get32(fh) / 100.0; |
---|
783 | if (ferror(fh) || feof(fh)) { |
---|
784 | img_errno = feof(fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
785 | return 0; |
---|
786 | } |
---|
787 | return 1; |
---|
788 | } |
---|
789 | |
---|
790 | static int |
---|
791 | skip_coord(FILE *fh) |
---|
792 | { |
---|
793 | return (fseek(fh, 12, SEEK_CUR) == 0); |
---|
794 | } |
---|
795 | |
---|
796 | static int |
---|
797 | read_v3label(img *pimg) |
---|
798 | { |
---|
799 | char *q; |
---|
800 | long len = GETC(pimg->fh); |
---|
801 | if (len == EOF) { |
---|
802 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
803 | return img_BAD; |
---|
804 | } |
---|
805 | if (len == 0xfe) { |
---|
806 | len += get16(pimg->fh); |
---|
807 | if (feof(pimg->fh)) { |
---|
808 | img_errno = IMG_BADFORMAT; |
---|
809 | return img_BAD; |
---|
810 | } |
---|
811 | if (ferror(pimg->fh)) { |
---|
812 | img_errno = IMG_READERROR; |
---|
813 | return img_BAD; |
---|
814 | } |
---|
815 | } else if (len == 0xff) { |
---|
816 | len = get32(pimg->fh); |
---|
817 | if (ferror(pimg->fh)) { |
---|
818 | img_errno = IMG_READERROR; |
---|
819 | return img_BAD; |
---|
820 | } |
---|
821 | if (feof(pimg->fh) || len < 0xfe + 0xffff) { |
---|
822 | img_errno = IMG_BADFORMAT; |
---|
823 | return img_BAD; |
---|
824 | } |
---|
825 | } |
---|
826 | |
---|
827 | if (!check_label_space(pimg, pimg->label_len + len + 1)) { |
---|
828 | img_errno = IMG_OUTOFMEMORY; |
---|
829 | return img_BAD; |
---|
830 | } |
---|
831 | q = pimg->label_buf + pimg->label_len; |
---|
832 | pimg->label_len += len; |
---|
833 | if (len && fread(q, len, 1, pimg->fh) != 1) { |
---|
834 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
835 | return img_BAD; |
---|
836 | } |
---|
837 | q[len] = '\0'; |
---|
838 | return 0; |
---|
839 | } |
---|
840 | |
---|
841 | static int img_read_item_ascii(img *pimg, img_point *p); |
---|
842 | |
---|
843 | int |
---|
844 | img_read_item(img *pimg, img_point *p) |
---|
845 | { |
---|
846 | int result; |
---|
847 | pimg->flags = 0; |
---|
848 | |
---|
849 | if (pimg->version >= 3) { |
---|
850 | int opt; |
---|
851 | pimg->l = pimg->r = pimg->u = pimg->d = -1.0; |
---|
852 | if (pimg->pending == 256) { |
---|
853 | pimg->pending = 0; |
---|
854 | return img_XSECT_END; |
---|
855 | } |
---|
856 | if (pimg->pending >= 0x80) { |
---|
857 | *p = pimg->mv; |
---|
858 | pimg->flags = (int)(pimg->pending) & 0x3f; |
---|
859 | pimg->pending = 0; |
---|
860 | return img_LINE; |
---|
861 | } |
---|
862 | again3: /* label to goto if we get a prefix, date, or lrud */ |
---|
863 | pimg->label = pimg->label_buf; |
---|
864 | opt = GETC(pimg->fh); |
---|
865 | if (opt == EOF) { |
---|
866 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
867 | return img_BAD; |
---|
868 | } |
---|
869 | switch (opt >> 6) { |
---|
870 | case 0: |
---|
871 | if (opt == 0) { |
---|
872 | if (!pimg->label_len) return img_STOP; /* end of data marker */ |
---|
873 | pimg->label_len = 0; |
---|
874 | goto again3; |
---|
875 | } |
---|
876 | if (opt < 15) { |
---|
877 | /* 1-14 mean trim that many levels from current prefix */ |
---|
878 | int c; |
---|
879 | if (pimg->label_len <= 17) { |
---|
880 | /* zero prefix using "0" */ |
---|
881 | img_errno = IMG_BADFORMAT; |
---|
882 | return img_BAD; |
---|
883 | } |
---|
884 | /* extra - 1 because label_len points to one past the end */ |
---|
885 | c = pimg->label_len - 17 - 1; |
---|
886 | while (pimg->label_buf[c] != '.' || --opt > 0) { |
---|
887 | if (--c < 0) { |
---|
888 | /* zero prefix using "0" */ |
---|
889 | img_errno = IMG_BADFORMAT; |
---|
890 | return img_BAD; |
---|
891 | } |
---|
892 | } |
---|
893 | c++; |
---|
894 | pimg->label_len = c; |
---|
895 | goto again3; |
---|
896 | } |
---|
897 | if (opt == 15) { |
---|
898 | result = img_MOVE; |
---|
899 | break; |
---|
900 | } |
---|
901 | if (opt >= 0x20) { |
---|
902 | switch (opt) { |
---|
903 | case 0x20: /* Single date */ |
---|
904 | if (pimg->version < 7) { |
---|
905 | int date1 = get32(pimg->fh); |
---|
906 | #if IMG_API_VERSION == 0 |
---|
907 | pimg->date2 = pimg->date1 = date1; |
---|
908 | #else /* IMG_API_VERSION == 1 */ |
---|
909 | if (date1 != 0) { |
---|
910 | pimg->days2 = pimg->days1 = (date1 / 86400) + 25567; |
---|
911 | } else { |
---|
912 | pimg->days2 = pimg->days1 = -1; |
---|
913 | } |
---|
914 | #endif |
---|
915 | } else { |
---|
916 | int days1 = (int)getu16(pimg->fh); |
---|
917 | #if IMG_API_VERSION == 0 |
---|
918 | pimg->date2 = pimg->date1 = (days1 - 25567) * 86400; |
---|
919 | #else /* IMG_API_VERSION == 1 */ |
---|
920 | pimg->days2 = pimg->days1 = days1; |
---|
921 | #endif |
---|
922 | } |
---|
923 | break; |
---|
924 | case 0x21: /* Date range (short for v7+) */ |
---|
925 | if (pimg->version < 7) { |
---|
926 | INT32_T date1 = get32(pimg->fh); |
---|
927 | INT32_T date2 = get32(pimg->fh); |
---|
928 | #if IMG_API_VERSION == 0 |
---|
929 | pimg->date1 = date1; |
---|
930 | pimg->date2 = date2; |
---|
931 | #else /* IMG_API_VERSION == 1 */ |
---|
932 | pimg->days1 = (date1 / 86400) + 25567; |
---|
933 | pimg->days2 = (date2 / 86400) + 25567; |
---|
934 | #endif |
---|
935 | } else { |
---|
936 | int days1 = (int)getu16(pimg->fh); |
---|
937 | int days2 = days1 + GETC(pimg->fh) + 1; |
---|
938 | #if IMG_API_VERSION == 0 |
---|
939 | pimg->date1 = (days1 - 25567) * 86400; |
---|
940 | pimg->date2 = (days2 - 25567) * 86400; |
---|
941 | #else /* IMG_API_VERSION == 1 */ |
---|
942 | pimg->days1 = days1; |
---|
943 | pimg->days2 = days2; |
---|
944 | #endif |
---|
945 | } |
---|
946 | break; |
---|
947 | case 0x22: /* Error info */ |
---|
948 | pimg->n_legs = get32(pimg->fh); |
---|
949 | pimg->length = get32(pimg->fh) / 100.0; |
---|
950 | pimg->E = get32(pimg->fh) / 100.0; |
---|
951 | pimg->H = get32(pimg->fh) / 100.0; |
---|
952 | pimg->V = get32(pimg->fh) / 100.0; |
---|
953 | return img_ERROR_INFO; |
---|
954 | case 0x23: { /* v7+: Date range (long) */ |
---|
955 | if (pimg->version < 7) { |
---|
956 | img_errno = IMG_BADFORMAT; |
---|
957 | return img_BAD; |
---|
958 | } |
---|
959 | int days1 = (int)getu16(pimg->fh); |
---|
960 | int days2 = (int)getu16(pimg->fh); |
---|
961 | #if IMG_API_VERSION == 0 |
---|
962 | pimg->date1 = (days1 - 25567) * 86400; |
---|
963 | pimg->date2 = (days2 - 25567) * 86400; |
---|
964 | #else /* IMG_API_VERSION == 1 */ |
---|
965 | pimg->days1 = days1; |
---|
966 | pimg->days2 = days2; |
---|
967 | #endif |
---|
968 | break; |
---|
969 | } |
---|
970 | case 0x24: { /* v7+: No date info */ |
---|
971 | #if IMG_API_VERSION == 0 |
---|
972 | pimg->date1 = pimg->date2 = 0; |
---|
973 | #else /* IMG_API_VERSION == 1 */ |
---|
974 | pimg->days1 = pimg->days2 = -1; |
---|
975 | #endif |
---|
976 | break; |
---|
977 | } |
---|
978 | case 0x30: case 0x31: /* LRUD */ |
---|
979 | case 0x32: case 0x33: /* Big LRUD! */ |
---|
980 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
981 | pimg->flags = (int)opt & 0x01; |
---|
982 | if (opt < 0x32) { |
---|
983 | pimg->l = get16(pimg->fh) / 100.0; |
---|
984 | pimg->r = get16(pimg->fh) / 100.0; |
---|
985 | pimg->u = get16(pimg->fh) / 100.0; |
---|
986 | pimg->d = get16(pimg->fh) / 100.0; |
---|
987 | } else { |
---|
988 | pimg->l = get32(pimg->fh) / 100.0; |
---|
989 | pimg->r = get32(pimg->fh) / 100.0; |
---|
990 | pimg->u = get32(pimg->fh) / 100.0; |
---|
991 | pimg->d = get32(pimg->fh) / 100.0; |
---|
992 | } |
---|
993 | if (pimg->survey_len) { |
---|
994 | size_t l = pimg->survey_len; |
---|
995 | const char *s = pimg->label_buf; |
---|
996 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
---|
997 | return img_XSECT_END; |
---|
998 | } |
---|
999 | pimg->label += l; |
---|
1000 | /* skip the dot if there */ |
---|
1001 | if (*pimg->label) pimg->label++; |
---|
1002 | } |
---|
1003 | /* If this is the last cross-section in this passage, set |
---|
1004 | * pending so we return img_XSECT_END next time. */ |
---|
1005 | if (pimg->flags & 0x01) { |
---|
1006 | pimg->pending = 256; |
---|
1007 | pimg->flags &= ~0x01; |
---|
1008 | } |
---|
1009 | return img_XSECT; |
---|
1010 | default: /* 0x25 - 0x2f and 0x34 - 0x3f are currently unallocated. */ |
---|
1011 | img_errno = IMG_BADFORMAT; |
---|
1012 | return img_BAD; |
---|
1013 | } |
---|
1014 | goto again3; |
---|
1015 | } |
---|
1016 | /* 16-31 mean remove (n - 15) characters from the prefix */ |
---|
1017 | /* zero prefix using 0 */ |
---|
1018 | if (pimg->label_len <= (size_t)(opt - 15)) { |
---|
1019 | img_errno = IMG_BADFORMAT; |
---|
1020 | return img_BAD; |
---|
1021 | } |
---|
1022 | pimg->label_len -= (opt - 15); |
---|
1023 | goto again3; |
---|
1024 | case 1: |
---|
1025 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
1026 | |
---|
1027 | result = img_LABEL; |
---|
1028 | |
---|
1029 | if (pimg->survey_len) { |
---|
1030 | size_t l = pimg->survey_len; |
---|
1031 | const char *s = pimg->label_buf; |
---|
1032 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
---|
1033 | if (!skip_coord(pimg->fh)) return img_BAD; |
---|
1034 | pimg->pending = 0; |
---|
1035 | goto again3; |
---|
1036 | } |
---|
1037 | pimg->label += l; |
---|
1038 | /* skip the dot if there */ |
---|
1039 | if (*pimg->label) pimg->label++; |
---|
1040 | } |
---|
1041 | |
---|
1042 | pimg->flags = (int)opt & 0x3f; |
---|
1043 | break; |
---|
1044 | case 2: |
---|
1045 | if (read_v3label(pimg) == img_BAD) return img_BAD; |
---|
1046 | |
---|
1047 | result = img_LINE; |
---|
1048 | |
---|
1049 | if (pimg->survey_len) { |
---|
1050 | size_t l = pimg->survey_len; |
---|
1051 | const char *s = pimg->label_buf; |
---|
1052 | if (strncmp(pimg->survey, s, l) != 0 || |
---|
1053 | !(s[l] == '.' || s[l] == '\0')) { |
---|
1054 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
1055 | pimg->pending = 15; |
---|
1056 | goto again3; |
---|
1057 | } |
---|
1058 | pimg->label += l; |
---|
1059 | /* skip the dot if there */ |
---|
1060 | if (*pimg->label) pimg->label++; |
---|
1061 | } |
---|
1062 | |
---|
1063 | if (pimg->pending) { |
---|
1064 | *p = pimg->mv; |
---|
1065 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
1066 | pimg->pending = opt; |
---|
1067 | return img_MOVE; |
---|
1068 | } |
---|
1069 | pimg->flags = (int)opt & 0x3f; |
---|
1070 | break; |
---|
1071 | default: |
---|
1072 | img_errno = IMG_BADFORMAT; |
---|
1073 | return img_BAD; |
---|
1074 | } |
---|
1075 | if (!read_coord(pimg->fh, p)) return img_BAD; |
---|
1076 | pimg->pending = 0; |
---|
1077 | return result; |
---|
1078 | } |
---|
1079 | |
---|
1080 | pimg->label = pimg->label_buf; |
---|
1081 | |
---|
1082 | if (pimg->version > 0) { |
---|
1083 | static long opt_lookahead = 0; |
---|
1084 | static img_point pt = { 0.0, 0.0, 0.0 }; |
---|
1085 | long opt; |
---|
1086 | again: /* label to goto if we get a cross */ |
---|
1087 | pimg->label[0] = '\0'; |
---|
1088 | |
---|
1089 | if (pimg->version == 1) { |
---|
1090 | if (opt_lookahead) { |
---|
1091 | opt = opt_lookahead; |
---|
1092 | opt_lookahead = 0; |
---|
1093 | } else { |
---|
1094 | opt = get32(pimg->fh); |
---|
1095 | } |
---|
1096 | } else { |
---|
1097 | opt = GETC(pimg->fh); |
---|
1098 | } |
---|
1099 | |
---|
1100 | if (feof(pimg->fh)) { |
---|
1101 | img_errno = IMG_BADFORMAT; |
---|
1102 | return img_BAD; |
---|
1103 | } |
---|
1104 | if (ferror(pimg->fh)) { |
---|
1105 | img_errno = IMG_READERROR; |
---|
1106 | return img_BAD; |
---|
1107 | } |
---|
1108 | |
---|
1109 | switch (opt) { |
---|
1110 | case -1: case 0: |
---|
1111 | return img_STOP; /* end of data marker */ |
---|
1112 | case 1: |
---|
1113 | /* skip coordinates */ |
---|
1114 | if (!skip_coord(pimg->fh)) { |
---|
1115 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1116 | return img_BAD; |
---|
1117 | } |
---|
1118 | goto again; |
---|
1119 | case 2: case 3: { |
---|
1120 | char *q; |
---|
1121 | int ch; |
---|
1122 | result = img_LABEL; |
---|
1123 | ch = GETC(pimg->fh); |
---|
1124 | if (ch == EOF) { |
---|
1125 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1126 | return img_BAD; |
---|
1127 | } |
---|
1128 | if (ch != '\\') ungetc(ch, pimg->fh); |
---|
1129 | fgets(pimg->label_buf, 257, pimg->fh); |
---|
1130 | if (feof(pimg->fh)) { |
---|
1131 | img_errno = IMG_BADFORMAT; |
---|
1132 | return img_BAD; |
---|
1133 | } |
---|
1134 | if (ferror(pimg->fh)) { |
---|
1135 | img_errno = IMG_READERROR; |
---|
1136 | return img_BAD; |
---|
1137 | } |
---|
1138 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
1139 | if (*q != '\n') { |
---|
1140 | img_errno = IMG_BADFORMAT; |
---|
1141 | return img_BAD; |
---|
1142 | } |
---|
1143 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
1144 | if (q == pimg->label_buf) goto again; |
---|
1145 | *q = '\0'; |
---|
1146 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
1147 | if (opt == 2) goto done; |
---|
1148 | break; |
---|
1149 | } |
---|
1150 | case 6: case 7: { |
---|
1151 | long len; |
---|
1152 | result = img_LABEL; |
---|
1153 | |
---|
1154 | if (opt == 7) |
---|
1155 | pimg->flags = GETC(pimg->fh); |
---|
1156 | else |
---|
1157 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
1158 | |
---|
1159 | len = get32(pimg->fh); |
---|
1160 | |
---|
1161 | if (feof(pimg->fh)) { |
---|
1162 | img_errno = IMG_BADFORMAT; |
---|
1163 | return img_BAD; |
---|
1164 | } |
---|
1165 | if (ferror(pimg->fh)) { |
---|
1166 | img_errno = IMG_READERROR; |
---|
1167 | return img_BAD; |
---|
1168 | } |
---|
1169 | |
---|
1170 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
1171 | if (len == 0) goto again; |
---|
1172 | if (!check_label_space(pimg, len + 1)) { |
---|
1173 | img_errno = IMG_OUTOFMEMORY; |
---|
1174 | return img_BAD; |
---|
1175 | } |
---|
1176 | if (fread(pimg->label_buf, len, 1, pimg->fh) != 1) { |
---|
1177 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1178 | return img_BAD; |
---|
1179 | } |
---|
1180 | pimg->label_buf[len] = '\0'; |
---|
1181 | break; |
---|
1182 | } |
---|
1183 | case 4: |
---|
1184 | result = img_MOVE; |
---|
1185 | break; |
---|
1186 | case 5: |
---|
1187 | result = img_LINE; |
---|
1188 | break; |
---|
1189 | default: |
---|
1190 | switch ((int)opt & 0xc0) { |
---|
1191 | case 0x80: |
---|
1192 | pimg->flags = (int)opt & 0x3f; |
---|
1193 | result = img_LINE; |
---|
1194 | break; |
---|
1195 | case 0x40: { |
---|
1196 | char *q; |
---|
1197 | pimg->flags = (int)opt & 0x3f; |
---|
1198 | result = img_LABEL; |
---|
1199 | if (!fgets(pimg->label_buf, 257, pimg->fh)) { |
---|
1200 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1201 | return img_BAD; |
---|
1202 | } |
---|
1203 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
1204 | /* Ignore empty-labels in some .3d files (caused by a bug) */ |
---|
1205 | if (q == pimg->label_buf) goto again; |
---|
1206 | if (*q != '\n') { |
---|
1207 | img_errno = IMG_BADFORMAT; |
---|
1208 | return img_BAD; |
---|
1209 | } |
---|
1210 | *q = '\0'; |
---|
1211 | break; |
---|
1212 | } |
---|
1213 | case 0xc0: |
---|
1214 | /* use this for an extra leg or station flag if we need it */ |
---|
1215 | default: |
---|
1216 | img_errno = IMG_BADFORMAT; |
---|
1217 | return img_BAD; |
---|
1218 | } |
---|
1219 | break; |
---|
1220 | } |
---|
1221 | |
---|
1222 | if (!read_coord(pimg->fh, &pt)) return img_BAD; |
---|
1223 | |
---|
1224 | if (result == img_LABEL && pimg->survey_len) { |
---|
1225 | if (strncmp(pimg->label_buf, pimg->survey, pimg->survey_len + 1) != 0) |
---|
1226 | goto again; |
---|
1227 | pimg->label += pimg->survey_len + 1; |
---|
1228 | } |
---|
1229 | |
---|
1230 | done: |
---|
1231 | *p = pt; |
---|
1232 | |
---|
1233 | if (result == img_MOVE && pimg->version == 1) { |
---|
1234 | /* peek at next code and see if it's an old-style label */ |
---|
1235 | opt_lookahead = get32(pimg->fh); |
---|
1236 | |
---|
1237 | if (feof(pimg->fh)) { |
---|
1238 | img_errno = IMG_BADFORMAT; |
---|
1239 | return img_BAD; |
---|
1240 | } |
---|
1241 | if (ferror(pimg->fh)) { |
---|
1242 | img_errno = IMG_READERROR; |
---|
1243 | return img_BAD; |
---|
1244 | } |
---|
1245 | |
---|
1246 | if (opt_lookahead == 2) return img_read_item(pimg, p); |
---|
1247 | } |
---|
1248 | |
---|
1249 | return result; |
---|
1250 | } else { |
---|
1251 | /* We need to set the default locale for fscanf() to work on |
---|
1252 | * numbers with "." as decimal point. */ |
---|
1253 | char * current_locale = my_strdup(setlocale(LC_NUMERIC, NULL)); |
---|
1254 | setlocale(LC_NUMERIC, "C"); |
---|
1255 | result = img_read_item_ascii(pimg, p); |
---|
1256 | setlocale(LC_NUMERIC, current_locale); |
---|
1257 | free(current_locale); |
---|
1258 | return result; |
---|
1259 | } |
---|
1260 | } |
---|
1261 | |
---|
1262 | /* Handle all for ASCII formats so we can easily fix up the locale |
---|
1263 | * so fscanf(), etc work on numbers with "." as decimal point. */ |
---|
1264 | static int |
---|
1265 | img_read_item_ascii(img *pimg, img_point *p) |
---|
1266 | { |
---|
1267 | int result; |
---|
1268 | if (pimg->version == 0) { |
---|
1269 | ascii_again: |
---|
1270 | pimg->label[0] = '\0'; |
---|
1271 | if (feof(pimg->fh)) return img_STOP; |
---|
1272 | if (pimg->pending) { |
---|
1273 | pimg->pending = 0; |
---|
1274 | result = img_LINE; |
---|
1275 | } else { |
---|
1276 | char cmd[7]; |
---|
1277 | /* Stop if nothing found */ |
---|
1278 | if (fscanf(pimg->fh, "%6s", cmd) < 1) return img_STOP; |
---|
1279 | if (strcmp(cmd, "move") == 0) |
---|
1280 | result = img_MOVE; |
---|
1281 | else if (strcmp(cmd, "draw") == 0) |
---|
1282 | result = img_LINE; |
---|
1283 | else if (strcmp(cmd, "line") == 0) { |
---|
1284 | /* set flag to indicate to process second triplet as LINE */ |
---|
1285 | pimg->pending = 1; |
---|
1286 | result = img_MOVE; |
---|
1287 | } else if (strcmp(cmd, "cross") == 0) { |
---|
1288 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
1289 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
1290 | return img_BAD; |
---|
1291 | } |
---|
1292 | goto ascii_again; |
---|
1293 | } else if (strcmp(cmd, "name") == 0) { |
---|
1294 | size_t off = 0; |
---|
1295 | int ch = GETC(pimg->fh); |
---|
1296 | if (ch == ' ') ch = GETC(pimg->fh); |
---|
1297 | while (ch != ' ') { |
---|
1298 | if (ch == '\n' || ch == EOF) { |
---|
1299 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
1300 | return img_BAD; |
---|
1301 | } |
---|
1302 | if (off == pimg->buf_len) { |
---|
1303 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
1304 | img_errno = IMG_OUTOFMEMORY; |
---|
1305 | return img_BAD; |
---|
1306 | } |
---|
1307 | } |
---|
1308 | pimg->label_buf[off++] = ch; |
---|
1309 | ch = GETC(pimg->fh); |
---|
1310 | } |
---|
1311 | pimg->label_buf[off] = '\0'; |
---|
1312 | |
---|
1313 | pimg->label = pimg->label_buf; |
---|
1314 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1315 | |
---|
1316 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1317 | |
---|
1318 | result = img_LABEL; |
---|
1319 | } else { |
---|
1320 | img_errno = IMG_BADFORMAT; |
---|
1321 | return img_BAD; /* unknown keyword */ |
---|
1322 | } |
---|
1323 | } |
---|
1324 | |
---|
1325 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
1326 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
1327 | return img_BAD; |
---|
1328 | } |
---|
1329 | |
---|
1330 | if (result == img_LABEL && pimg->survey_len) { |
---|
1331 | if (strncmp(pimg->label, pimg->survey, pimg->survey_len + 1) != 0) |
---|
1332 | goto ascii_again; |
---|
1333 | pimg->label += pimg->survey_len + 1; |
---|
1334 | } |
---|
1335 | |
---|
1336 | return result; |
---|
1337 | } else if (pimg->version == VERSION_SURVEX_POS) { |
---|
1338 | /* Survex .pos file */ |
---|
1339 | size_t off; |
---|
1340 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1341 | againpos: |
---|
1342 | off = 0; |
---|
1343 | while (fscanf(pimg->fh, "(%lf,%lf,%lf ) ", &p->x, &p->y, &p->z) != 3) { |
---|
1344 | int ch; |
---|
1345 | if (ferror(pimg->fh)) { |
---|
1346 | img_errno = IMG_READERROR; |
---|
1347 | return img_BAD; |
---|
1348 | } |
---|
1349 | if (feof(pimg->fh)) return img_STOP; |
---|
1350 | if (pimg->pending) { |
---|
1351 | img_errno = IMG_BADFORMAT; |
---|
1352 | return img_BAD; |
---|
1353 | } |
---|
1354 | pimg->pending = 1; |
---|
1355 | /* ignore rest of line */ |
---|
1356 | do { |
---|
1357 | ch = GETC(pimg->fh); |
---|
1358 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
1359 | } |
---|
1360 | |
---|
1361 | pimg->label_buf[0] = '\0'; |
---|
1362 | while (!feof(pimg->fh)) { |
---|
1363 | if (!fgets(pimg->label_buf + off, pimg->buf_len - off, pimg->fh)) { |
---|
1364 | img_errno = IMG_READERROR; |
---|
1365 | return img_BAD; |
---|
1366 | } |
---|
1367 | |
---|
1368 | off += strlen(pimg->label_buf + off); |
---|
1369 | if (off && pimg->label_buf[off - 1] == '\n') { |
---|
1370 | pimg->label_buf[off - 1] = '\0'; |
---|
1371 | break; |
---|
1372 | } |
---|
1373 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
1374 | img_errno = IMG_OUTOFMEMORY; |
---|
1375 | return img_BAD; |
---|
1376 | } |
---|
1377 | } |
---|
1378 | |
---|
1379 | pimg->label = pimg->label_buf; |
---|
1380 | |
---|
1381 | if (pimg->label[0] == '\\') pimg->label++; |
---|
1382 | |
---|
1383 | if (pimg->survey_len) { |
---|
1384 | size_t l = pimg->survey_len + 1; |
---|
1385 | if (strncmp(pimg->survey, pimg->label, l) != 0) goto againpos; |
---|
1386 | pimg->label += l; |
---|
1387 | } |
---|
1388 | |
---|
1389 | return img_LABEL; |
---|
1390 | } else if (pimg->version == VERSION_COMPASS_PLT) { |
---|
1391 | /* Compass .plt file */ |
---|
1392 | if (pimg->pending > 0) { |
---|
1393 | /* -1 signals we've entered the first survey we want to |
---|
1394 | * read, and need to fudge lots if the first action is 'D'... |
---|
1395 | */ |
---|
1396 | /* pending MOVE or LINE */ |
---|
1397 | int r = pimg->pending - 4; |
---|
1398 | pimg->pending = 0; |
---|
1399 | pimg->flags = 0; |
---|
1400 | pimg->label[pimg->label_len] = '\0'; |
---|
1401 | return r; |
---|
1402 | } |
---|
1403 | |
---|
1404 | while (1) { |
---|
1405 | char *line; |
---|
1406 | char *q; |
---|
1407 | size_t len = 0; |
---|
1408 | int ch = GETC(pimg->fh); |
---|
1409 | |
---|
1410 | switch (ch) { |
---|
1411 | case '\x1a': case EOF: /* Don't insist on ^Z at end of file */ |
---|
1412 | return img_STOP; |
---|
1413 | case 'X': case 'F': case 'S': |
---|
1414 | /* bounding boX (marks end of survey), Feature survey, or |
---|
1415 | * new Section - skip to next survey */ |
---|
1416 | if (pimg->survey) return img_STOP; |
---|
1417 | skip_to_N: |
---|
1418 | while (1) { |
---|
1419 | do { |
---|
1420 | ch = GETC(pimg->fh); |
---|
1421 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
1422 | while (ch == '\n' || ch == '\r') ch = GETC(pimg->fh); |
---|
1423 | if (ch == 'N') break; |
---|
1424 | if (ch == '\x1a' || ch == EOF) return img_STOP; |
---|
1425 | } |
---|
1426 | /* FALLTHRU */ |
---|
1427 | case 'N': |
---|
1428 | line = getline_alloc(pimg->fh); |
---|
1429 | if (!line) { |
---|
1430 | img_errno = IMG_OUTOFMEMORY; |
---|
1431 | return img_BAD; |
---|
1432 | } |
---|
1433 | while (line[len] > 32) ++len; |
---|
1434 | if (pimg->label_len == 0) pimg->pending = -1; |
---|
1435 | if (!check_label_space(pimg, len + 1)) { |
---|
1436 | osfree(line); |
---|
1437 | img_errno = IMG_OUTOFMEMORY; |
---|
1438 | return img_BAD; |
---|
1439 | } |
---|
1440 | pimg->label_len = len; |
---|
1441 | pimg->label = pimg->label_buf; |
---|
1442 | memcpy(pimg->label, line, len); |
---|
1443 | pimg->label[len] = '\0'; |
---|
1444 | osfree(line); |
---|
1445 | break; |
---|
1446 | case 'M': case 'D': { |
---|
1447 | /* Move or Draw */ |
---|
1448 | long fpos = -1; |
---|
1449 | if (pimg->survey && pimg->label_len == 0) { |
---|
1450 | /* We're only holding onto this line in case the first line |
---|
1451 | * of the 'N' is a 'D', so skip it for now... |
---|
1452 | */ |
---|
1453 | goto skip_to_N; |
---|
1454 | } |
---|
1455 | if (ch == 'D' && pimg->pending == -1) { |
---|
1456 | if (pimg->survey) { |
---|
1457 | fpos = ftell(pimg->fh) - 1; |
---|
1458 | fseek(pimg->fh, pimg->start, SEEK_SET); |
---|
1459 | ch = GETC(pimg->fh); |
---|
1460 | pimg->pending = 0; |
---|
1461 | } else { |
---|
1462 | /* If a file actually has a 'D' before any 'M', then |
---|
1463 | * pretend the 'D' is an 'M' - one of the examples |
---|
1464 | * in the docs was like this! */ |
---|
1465 | ch = 'M'; |
---|
1466 | } |
---|
1467 | } |
---|
1468 | line = getline_alloc(pimg->fh); |
---|
1469 | if (!line) { |
---|
1470 | img_errno = IMG_OUTOFMEMORY; |
---|
1471 | return img_BAD; |
---|
1472 | } |
---|
1473 | /* Compass stores coordinates as North, East, Up = (y,x,z)! */ |
---|
1474 | if (sscanf(line, "%lf%lf%lf", &p->y, &p->x, &p->z) != 3) { |
---|
1475 | osfree(line); |
---|
1476 | if (ferror(pimg->fh)) { |
---|
1477 | img_errno = IMG_READERROR; |
---|
1478 | } else { |
---|
1479 | img_errno = IMG_BADFORMAT; |
---|
1480 | } |
---|
1481 | return img_BAD; |
---|
1482 | } |
---|
1483 | p->x *= METRES_PER_FOOT; |
---|
1484 | p->y *= METRES_PER_FOOT; |
---|
1485 | p->z *= METRES_PER_FOOT; |
---|
1486 | q = strchr(line, 'S'); |
---|
1487 | if (!q) { |
---|
1488 | osfree(line); |
---|
1489 | img_errno = IMG_BADFORMAT; |
---|
1490 | return img_BAD; |
---|
1491 | } |
---|
1492 | ++q; |
---|
1493 | len = 0; |
---|
1494 | while (q[len] > ' ') ++len; |
---|
1495 | q[len] = '\0'; |
---|
1496 | len += 2; /* ' ' and '\0' */ |
---|
1497 | if (!check_label_space(pimg, pimg->label_len + len)) { |
---|
1498 | img_errno = IMG_OUTOFMEMORY; |
---|
1499 | return img_BAD; |
---|
1500 | } |
---|
1501 | pimg->label = pimg->label_buf; |
---|
1502 | if (pimg->label_len) { |
---|
1503 | pimg->label[pimg->label_len] = ' '; |
---|
1504 | memcpy(pimg->label + pimg->label_len + 1, q, len - 1); |
---|
1505 | } else { |
---|
1506 | memcpy(pimg->label, q, len - 1); |
---|
1507 | } |
---|
1508 | q += len - 1; |
---|
1509 | /* Now read LRUD. Technically, this is optional but virtually |
---|
1510 | * all PLT files have it (with dummy negative values if no LRUD |
---|
1511 | * was measured) and some versions of Compass can't read PLT |
---|
1512 | * files without it! |
---|
1513 | */ |
---|
1514 | while (*q && *q <= ' ') q++; |
---|
1515 | if (*q == 'P') { |
---|
1516 | if (sscanf(q + 1, "%lf%lf%lf%lf", |
---|
1517 | &pimg->l, &pimg->r, &pimg->u, &pimg->d) != 4) { |
---|
1518 | osfree(line); |
---|
1519 | if (ferror(pimg->fh)) { |
---|
1520 | img_errno = IMG_READERROR; |
---|
1521 | } else { |
---|
1522 | img_errno = IMG_BADFORMAT; |
---|
1523 | } |
---|
1524 | return img_BAD; |
---|
1525 | } |
---|
1526 | pimg->l *= METRES_PER_FOOT; |
---|
1527 | pimg->r *= METRES_PER_FOOT; |
---|
1528 | pimg->u *= METRES_PER_FOOT; |
---|
1529 | pimg->d *= METRES_PER_FOOT; |
---|
1530 | } else { |
---|
1531 | pimg->l = pimg->r = pimg->u = pimg->d = -1; |
---|
1532 | } |
---|
1533 | osfree(line); |
---|
1534 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1535 | if (fpos != -1) { |
---|
1536 | fseek(pimg->fh, fpos, SEEK_SET); |
---|
1537 | } else { |
---|
1538 | pimg->pending = (ch == 'M' ? img_MOVE : img_LINE) + 4; |
---|
1539 | } |
---|
1540 | return img_LABEL; |
---|
1541 | } |
---|
1542 | default: |
---|
1543 | img_errno = IMG_BADFORMAT; |
---|
1544 | return img_BAD; |
---|
1545 | } |
---|
1546 | } |
---|
1547 | } else { |
---|
1548 | /* CMAP .xyz file */ |
---|
1549 | char *line = NULL; |
---|
1550 | char *q; |
---|
1551 | size_t len; |
---|
1552 | |
---|
1553 | if (pimg->pending) { |
---|
1554 | /* pending MOVE or LINE or LABEL or STOP */ |
---|
1555 | int r = pimg->pending - 4; |
---|
1556 | /* Set label to empty - don't use "" as we adjust label relative |
---|
1557 | * to label_buf when label_buf is reallocated. */ |
---|
1558 | pimg->label = pimg->label_buf + strlen(pimg->label_buf); |
---|
1559 | pimg->flags = 0; |
---|
1560 | if (r == img_LABEL) { |
---|
1561 | /* nasty magic */ |
---|
1562 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
1563 | subtract_xyz_shot_deltas(p, pimg->label_buf + 16); |
---|
1564 | pimg->pending = img_STOP + 4; |
---|
1565 | return img_MOVE; |
---|
1566 | } |
---|
1567 | |
---|
1568 | pimg->pending = 0; |
---|
1569 | |
---|
1570 | if (r == img_STOP) { |
---|
1571 | /* nasty magic */ |
---|
1572 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
1573 | return img_LINE; |
---|
1574 | } |
---|
1575 | |
---|
1576 | return r; |
---|
1577 | } |
---|
1578 | |
---|
1579 | pimg->label = pimg->label_buf; |
---|
1580 | do { |
---|
1581 | osfree(line); |
---|
1582 | if (feof(pimg->fh)) return img_STOP; |
---|
1583 | line = getline_alloc(pimg->fh); |
---|
1584 | if (!line) { |
---|
1585 | img_errno = IMG_OUTOFMEMORY; |
---|
1586 | return img_BAD; |
---|
1587 | } |
---|
1588 | } while (line[0] == ' ' || line[0] == '\0'); |
---|
1589 | if (line[0] == '\x1a') return img_STOP; |
---|
1590 | |
---|
1591 | len = strlen(line); |
---|
1592 | if (pimg->version == VERSION_CMAP_STATION) { |
---|
1593 | /* station variant */ |
---|
1594 | if (len < 37) { |
---|
1595 | osfree(line); |
---|
1596 | img_errno = IMG_BADFORMAT; |
---|
1597 | return img_BAD; |
---|
1598 | } |
---|
1599 | memcpy(pimg->label, line, 6); |
---|
1600 | q = memchr(pimg->label, ' ', 6); |
---|
1601 | if (!q) q = pimg->label + 6; |
---|
1602 | *q = '\0'; |
---|
1603 | |
---|
1604 | read_xyz_station_coords(p, line); |
---|
1605 | |
---|
1606 | /* FIXME: look at prev for lines (line + 32, 5) */ |
---|
1607 | /* FIXME: duplicate stations... */ |
---|
1608 | return img_LABEL; |
---|
1609 | } else { |
---|
1610 | /* Shot variant */ |
---|
1611 | char old[8], new[8]; |
---|
1612 | if (len < 61) { |
---|
1613 | osfree(line); |
---|
1614 | img_errno = IMG_BADFORMAT; |
---|
1615 | return img_BAD; |
---|
1616 | } |
---|
1617 | |
---|
1618 | memcpy(old, line, 7); |
---|
1619 | q = memchr(old, ' ', 7); |
---|
1620 | if (!q) q = old + 7; |
---|
1621 | *q = '\0'; |
---|
1622 | |
---|
1623 | memcpy(new, line + 7, 7); |
---|
1624 | q = memchr(new, ' ', 7); |
---|
1625 | if (!q) q = new + 7; |
---|
1626 | *q = '\0'; |
---|
1627 | |
---|
1628 | pimg->flags = img_SFLAG_UNDERGROUND; |
---|
1629 | |
---|
1630 | if (strcmp(old, new) == 0) { |
---|
1631 | pimg->pending = img_MOVE + 4; |
---|
1632 | read_xyz_shot_coords(p, line); |
---|
1633 | strcpy(pimg->label, new); |
---|
1634 | osfree(line); |
---|
1635 | return img_LABEL; |
---|
1636 | } |
---|
1637 | |
---|
1638 | if (strcmp(old, pimg->label) == 0) { |
---|
1639 | pimg->pending = img_LINE + 4; |
---|
1640 | read_xyz_shot_coords(p, line); |
---|
1641 | strcpy(pimg->label, new); |
---|
1642 | osfree(line); |
---|
1643 | return img_LABEL; |
---|
1644 | } |
---|
1645 | |
---|
1646 | pimg->pending = img_LABEL + 4; |
---|
1647 | read_xyz_shot_coords(p, line); |
---|
1648 | strcpy(pimg->label, new); |
---|
1649 | memcpy(pimg->label + 16, line, 70); |
---|
1650 | |
---|
1651 | osfree(line); |
---|
1652 | return img_LABEL; |
---|
1653 | } |
---|
1654 | } |
---|
1655 | } |
---|
1656 | |
---|
1657 | static int |
---|
1658 | write_v3label(img *pimg, int opt, const char *s) |
---|
1659 | { |
---|
1660 | size_t len, n, dot; |
---|
1661 | |
---|
1662 | /* find length of common prefix */ |
---|
1663 | dot = 0; |
---|
1664 | for (len = 0; s[len] == pimg->label_buf[len] && s[len] != '\0'; len++) { |
---|
1665 | if (s[len] == '.') dot = len + 1; |
---|
1666 | } |
---|
1667 | |
---|
1668 | SVX_ASSERT(len <= pimg->label_len); |
---|
1669 | n = pimg->label_len - len; |
---|
1670 | if (len == 0) { |
---|
1671 | if (pimg->label_len) PUTC(0, pimg->fh); |
---|
1672 | } else if (n <= 16) { |
---|
1673 | if (n) PUTC(n + 15, pimg->fh); |
---|
1674 | } else if (dot == 0) { |
---|
1675 | if (pimg->label_len) PUTC(0, pimg->fh); |
---|
1676 | len = 0; |
---|
1677 | } else { |
---|
1678 | const char *p = pimg->label_buf + dot; |
---|
1679 | n = 1; |
---|
1680 | for (len = pimg->label_len - dot - 17; len; len--) { |
---|
1681 | if (*p++ == '.') n++; |
---|
1682 | } |
---|
1683 | if (n <= 14) { |
---|
1684 | PUTC(n, pimg->fh); |
---|
1685 | len = dot; |
---|
1686 | } else { |
---|
1687 | if (pimg->label_len) PUTC(0, pimg->fh); |
---|
1688 | len = 0; |
---|
1689 | } |
---|
1690 | } |
---|
1691 | |
---|
1692 | n = strlen(s + len); |
---|
1693 | PUTC(opt, pimg->fh); |
---|
1694 | if (n < 0xfe) { |
---|
1695 | PUTC(n, pimg->fh); |
---|
1696 | } else if (n < 0xffff + 0xfe) { |
---|
1697 | PUTC(0xfe, pimg->fh); |
---|
1698 | put16((short)(n - 0xfe), pimg->fh); |
---|
1699 | } else { |
---|
1700 | PUTC(0xff, pimg->fh); |
---|
1701 | put32(n, pimg->fh); |
---|
1702 | } |
---|
1703 | fwrite(s + len, n, 1, pimg->fh); |
---|
1704 | |
---|
1705 | n += len; |
---|
1706 | pimg->label_len = n; |
---|
1707 | if (!check_label_space(pimg, n + 1)) |
---|
1708 | return 0; /* FIXME: distinguish out of memory... */ |
---|
1709 | memcpy(pimg->label_buf + len, s + len, n - len + 1); |
---|
1710 | |
---|
1711 | return !ferror(pimg->fh); |
---|
1712 | } |
---|
1713 | |
---|
1714 | static void |
---|
1715 | img_write_item_date(img *pimg) |
---|
1716 | { |
---|
1717 | int same, unset; |
---|
1718 | /* Only write dates when they've changed. */ |
---|
1719 | #if IMG_API_VERSION == 0 |
---|
1720 | if (pimg->date1 == pimg->olddate1 && pimg->date2 == pimg->olddate2) |
---|
1721 | return; |
---|
1722 | |
---|
1723 | same = (pimg->date1 == pimg->date2); |
---|
1724 | unset = (pimg->date1 == 0); |
---|
1725 | #else /* IMG_API_VERSION == 1 */ |
---|
1726 | if (pimg->days1 == pimg->olddays1 && pimg->days2 == pimg->olddays2) |
---|
1727 | return; |
---|
1728 | |
---|
1729 | same = (pimg->days1 == pimg->days2); |
---|
1730 | unset = (pimg->days1 == -1); |
---|
1731 | #endif |
---|
1732 | |
---|
1733 | if (same) { |
---|
1734 | if (img_output_version < 7) { |
---|
1735 | PUTC(0x20, pimg->fh); |
---|
1736 | #if IMG_API_VERSION == 0 |
---|
1737 | put32(pimg->date1, pimg->fh); |
---|
1738 | #else /* IMG_API_VERSION == 1 */ |
---|
1739 | put32((pimg->days1 - 25567) * 86400, pimg->fh); |
---|
1740 | #endif |
---|
1741 | } else { |
---|
1742 | if (unset) { |
---|
1743 | PUTC(0x24, pimg->fh); |
---|
1744 | } else { |
---|
1745 | PUTC(0x20, pimg->fh); |
---|
1746 | #if IMG_API_VERSION == 0 |
---|
1747 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
1748 | #else /* IMG_API_VERSION == 1 */ |
---|
1749 | put16(pimg->days1, pimg->fh); |
---|
1750 | #endif |
---|
1751 | } |
---|
1752 | } |
---|
1753 | } else { |
---|
1754 | if (img_output_version < 7) { |
---|
1755 | PUTC(0x21, pimg->fh); |
---|
1756 | #if IMG_API_VERSION == 0 |
---|
1757 | put32(pimg->date1, pimg->fh); |
---|
1758 | put32(pimg->date2, pimg->fh); |
---|
1759 | #else /* IMG_API_VERSION == 1 */ |
---|
1760 | put32((pimg->days1 - 25567) * 86400, pimg->fh); |
---|
1761 | put32((pimg->days2 - 25567) * 86400, pimg->fh); |
---|
1762 | #endif |
---|
1763 | } else { |
---|
1764 | #if IMG_API_VERSION == 0 |
---|
1765 | int diff = (pimg->date2 - pimg->date1) / 86400; |
---|
1766 | if (diff > 0 && diff <= 256) { |
---|
1767 | PUTC(0x21, pimg->fh); |
---|
1768 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
1769 | PUTC(diff - 1, pimg->fh); |
---|
1770 | } else { |
---|
1771 | PUTC(0x23, pimg->fh); |
---|
1772 | put16(pimg->date1 / 86400 + 25567, pimg->fh); |
---|
1773 | put16(pimg->date2 / 86400 + 25567, pimg->fh); |
---|
1774 | } |
---|
1775 | #else /* IMG_API_VERSION == 1 */ |
---|
1776 | int diff = pimg->days2 - pimg->days1; |
---|
1777 | if (diff > 0 && diff <= 256) { |
---|
1778 | PUTC(0x21, pimg->fh); |
---|
1779 | put16(pimg->days1, pimg->fh); |
---|
1780 | PUTC(diff - 1, pimg->fh); |
---|
1781 | } else { |
---|
1782 | PUTC(0x23, pimg->fh); |
---|
1783 | put16(pimg->days1, pimg->fh); |
---|
1784 | put16(pimg->days2, pimg->fh); |
---|
1785 | } |
---|
1786 | #endif |
---|
1787 | } |
---|
1788 | } |
---|
1789 | #if IMG_API_VERSION == 0 |
---|
1790 | pimg->olddate1 = pimg->date1; |
---|
1791 | pimg->olddate2 = pimg->date2; |
---|
1792 | #else /* IMG_API_VERSION == 1 */ |
---|
1793 | pimg->olddays1 = pimg->days1; |
---|
1794 | pimg->olddays2 = pimg->days2; |
---|
1795 | #endif |
---|
1796 | } |
---|
1797 | |
---|
1798 | void |
---|
1799 | img_write_item(img *pimg, int code, int flags, const char *s, |
---|
1800 | double x, double y, double z) |
---|
1801 | { |
---|
1802 | if (!pimg) return; |
---|
1803 | if (pimg->version >= 3) { |
---|
1804 | int opt = 0; |
---|
1805 | switch (code) { |
---|
1806 | case img_LABEL: |
---|
1807 | write_v3label(pimg, 0x40 | flags, s); |
---|
1808 | opt = 0; |
---|
1809 | break; |
---|
1810 | case img_XSECT: { |
---|
1811 | INT32_T l, r, u, d, max_dim; |
---|
1812 | /* Need at least version 5 for img_XSECT. */ |
---|
1813 | if (pimg->version < 5) break; |
---|
1814 | img_write_item_date(pimg); |
---|
1815 | l = (INT32_T)my_round(pimg->l * 100.0); |
---|
1816 | r = (INT32_T)my_round(pimg->r * 100.0); |
---|
1817 | u = (INT32_T)my_round(pimg->u * 100.0); |
---|
1818 | d = (INT32_T)my_round(pimg->d * 100.0); |
---|
1819 | if (l < 0) l = -1; |
---|
1820 | if (r < 0) r = -1; |
---|
1821 | if (u < 0) u = -1; |
---|
1822 | if (d < 0) d = -1; |
---|
1823 | max_dim = max(max(l, r), max(u, d)); |
---|
1824 | flags &= 1; |
---|
1825 | if (max_dim >= 32768) flags |= 2; |
---|
1826 | write_v3label(pimg, 0x30 | flags, s); |
---|
1827 | if (flags & 2) { |
---|
1828 | /* Big passage! Need to use 4 bytes. */ |
---|
1829 | put32(l, pimg->fh); |
---|
1830 | put32(r, pimg->fh); |
---|
1831 | put32(u, pimg->fh); |
---|
1832 | put32(d, pimg->fh); |
---|
1833 | } else { |
---|
1834 | put16(l, pimg->fh); |
---|
1835 | put16(r, pimg->fh); |
---|
1836 | put16(u, pimg->fh); |
---|
1837 | put16(d, pimg->fh); |
---|
1838 | } |
---|
1839 | return; |
---|
1840 | } |
---|
1841 | case img_MOVE: |
---|
1842 | opt = 15; |
---|
1843 | break; |
---|
1844 | case img_LINE: |
---|
1845 | if (pimg->version >= 4) { |
---|
1846 | img_write_item_date(pimg); |
---|
1847 | } |
---|
1848 | write_v3label(pimg, 0x80 | flags, s ? s : ""); |
---|
1849 | opt = 0; |
---|
1850 | break; |
---|
1851 | default: /* ignore for now */ |
---|
1852 | return; |
---|
1853 | } |
---|
1854 | if (opt) PUTC(opt, pimg->fh); |
---|
1855 | /* Output in cm */ |
---|
1856 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
1857 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
1858 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
1859 | } else { |
---|
1860 | size_t len; |
---|
1861 | INT32_T opt = 0; |
---|
1862 | SVX_ASSERT(pimg->version > 0); |
---|
1863 | switch (code) { |
---|
1864 | case img_LABEL: |
---|
1865 | if (pimg->version == 1) { |
---|
1866 | /* put a move before each label */ |
---|
1867 | img_write_item(pimg, img_MOVE, 0, NULL, x, y, z); |
---|
1868 | put32(2, pimg->fh); |
---|
1869 | fputsnl(s, pimg->fh); |
---|
1870 | return; |
---|
1871 | } |
---|
1872 | len = strlen(s); |
---|
1873 | if (len > 255 || strchr(s, '\n')) { |
---|
1874 | /* long label - not in early incarnations of v2 format, but few |
---|
1875 | * 3d files will need these, so better not to force incompatibility |
---|
1876 | * with a new version I think... */ |
---|
1877 | PUTC(7, pimg->fh); |
---|
1878 | PUTC(flags, pimg->fh); |
---|
1879 | put32(len, pimg->fh); |
---|
1880 | fputs(s, pimg->fh); |
---|
1881 | } else { |
---|
1882 | PUTC(0x40 | (flags & 0x3f), pimg->fh); |
---|
1883 | fputsnl(s, pimg->fh); |
---|
1884 | } |
---|
1885 | opt = 0; |
---|
1886 | break; |
---|
1887 | case img_MOVE: |
---|
1888 | opt = 4; |
---|
1889 | break; |
---|
1890 | case img_LINE: |
---|
1891 | if (pimg->version > 1) { |
---|
1892 | opt = 0x80 | (flags & 0x3f); |
---|
1893 | break; |
---|
1894 | } |
---|
1895 | opt = 5; |
---|
1896 | break; |
---|
1897 | default: /* ignore for now */ |
---|
1898 | return; |
---|
1899 | } |
---|
1900 | if (pimg->version == 1) { |
---|
1901 | put32(opt, pimg->fh); |
---|
1902 | } else { |
---|
1903 | if (opt) PUTC(opt, pimg->fh); |
---|
1904 | } |
---|
1905 | /* Output in cm */ |
---|
1906 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
1907 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
1908 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
1909 | } |
---|
1910 | } |
---|
1911 | |
---|
1912 | /* Write error information for the current traverse |
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1913 | * n_legs is the number of legs in the traverse |
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1914 | * length is the traverse length (in m) |
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1915 | * E is the ratio of the observed misclosure to the theoretical one |
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1916 | * H is the ratio of the observed horizontal misclosure to the theoretical one |
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1917 | * V is the ratio of the observed vertical misclosure to the theoretical one |
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1918 | */ |
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1919 | void |
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1920 | img_write_errors(img *pimg, int n_legs, double length, |
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1921 | double E, double H, double V) |
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1922 | { |
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1923 | PUTC(0x22, pimg->fh); |
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1924 | put32(n_legs, pimg->fh); |
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1925 | put32((INT32_T)my_round(length * 100.0), pimg->fh); |
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1926 | put32((INT32_T)my_round(E * 100.0), pimg->fh); |
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1927 | put32((INT32_T)my_round(H * 100.0), pimg->fh); |
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1928 | put32((INT32_T)my_round(V * 100.0), pimg->fh); |
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1929 | } |
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1930 | |
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1931 | int |
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1932 | img_close(img *pimg) |
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1933 | { |
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1934 | int result = 1; |
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1935 | if (pimg) { |
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1936 | if (pimg->fh) { |
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1937 | if (pimg->fRead) { |
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1938 | osfree(pimg->survey); |
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1939 | osfree(pimg->title); |
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1940 | osfree(pimg->datestamp); |
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1941 | } else { |
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1942 | /* write end of data marker */ |
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1943 | switch (pimg->version) { |
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1944 | case 1: |
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1945 | put32((INT32_T)-1, pimg->fh); |
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1946 | break; |
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1947 | case 2: |
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1948 | PUTC(0, pimg->fh); |
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1949 | break; |
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1950 | default: |
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1951 | if (pimg->label_len) PUTC(0, pimg->fh); |
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1952 | PUTC(0, pimg->fh); |
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1953 | break; |
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1954 | } |
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1955 | } |
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1956 | if (ferror(pimg->fh)) result = 0; |
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1957 | if (fclose(pimg->fh)) result = 0; |
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1958 | if (!result) img_errno = pimg->fRead ? IMG_READERROR : IMG_WRITEERROR; |
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1959 | } |
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1960 | osfree(pimg->label_buf); |
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1961 | osfree(pimg->filename_opened); |
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1962 | osfree(pimg); |
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1963 | } |
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1964 | return result; |
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1965 | } |
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