1 | /* img.c |
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2 | * Routines for reading and writing Survex ".3d" image files |
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3 | * Copyright (C) 1993-2002 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 | |
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30 | #include "img.h" |
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31 | |
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32 | #ifdef IMG_HOSTED |
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33 | # include "debug.h" |
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34 | # include "filelist.h" |
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35 | # include "filename.h" |
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36 | # include "message.h" |
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37 | # include "useful.h" |
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38 | # define TIMENA msg(/*Date and time not available.*/108) |
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39 | # define TIMEFMT msg(/*%a,%Y.%m.%d %H:%M:%S %Z*/107) |
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40 | #else |
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41 | # define INT32_T long |
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42 | # define TIMENA "Time not available." |
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43 | # define TIMEFMT "%a,%Y.%m.%d %H:%M:%S %Z" |
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44 | # define EXT_SVX_3D "3d" |
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45 | # define xosmalloc(L) malloc((L)) |
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46 | # define xosrealloc(L,S) realloc((L),(S)) |
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47 | # define osfree(P) free((P)) |
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48 | # define ossizeof(T) sizeof(T) |
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49 | /* in IMG_HOSTED mode, this tests if a filename refers to a directory */ |
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50 | # define fDirectory(X) 0 |
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51 | /* open file FNM with mode MODE, maybe using path PTH and/or extension EXT */ |
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52 | /* path isn't used in img.c, but EXT is */ |
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53 | # define fopenWithPthAndExt(PTH,FNM,EXT,MODE,X) fopen(FNM,MODE) |
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54 | # define fFalse 0 |
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55 | # define fTrue 1 |
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56 | # define bool int |
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57 | /* dummy do {...} while(0) hack to permit stuff like |
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58 | * if (s) fputsnl(s,fh); else exit(1); |
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59 | * to work as intended |
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60 | */ |
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61 | # define fputsnl(S, FH) do {fputs((S), (FH)); putc('\n', (FH));} while(0) |
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62 | # define ASSERT(X) |
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63 | |
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64 | static long |
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65 | get32(FILE *fh) |
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66 | { |
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67 | long w = getc(fh); |
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68 | w |= (long)getc(fh) << 8l; |
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69 | w |= (long)getc(fh) << 16l; |
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70 | w |= (long)getc(fh) << 24l; |
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71 | return w; |
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72 | } |
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73 | |
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74 | static void |
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75 | put32(long w, FILE *fh) |
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76 | { |
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77 | putc((char)(w), fh); |
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78 | putc((char)(w >> 8l), fh); |
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79 | putc((char)(w >> 16l), fh); |
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80 | putc((char)(w >> 24l), fh); |
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81 | } |
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82 | |
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83 | #endif |
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84 | |
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85 | #ifdef HAVE_ROUND |
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86 | # include <math.h> |
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87 | extern double round(double); /* prototype is often missing... */ |
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88 | # define my_round round |
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89 | #else |
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90 | static double |
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91 | my_round(double x) { |
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92 | if (x >= 0.0) return floor(x + 0.5); |
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93 | return ceil(x - 0.5); |
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94 | } |
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95 | #endif |
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96 | |
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97 | /* portable case insensitive string compare */ |
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98 | #if defined(strcasecmp) || defined(HAVE_STRCASECMP) |
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99 | # define my_strcasecmp strcasecmp |
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100 | #else |
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101 | /* What about top bit set chars? */ |
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102 | int my_strcasecmp(const char *s1, const char *s2) { |
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103 | register c1, c2; |
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104 | do { |
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105 | c1 = *s1++; |
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106 | c2 = *s2++; |
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107 | } while (c1 && toupper(c1) == toupper(c2)); |
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108 | /* now calculate real difference */ |
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109 | return c1 - c2; |
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110 | } |
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111 | #endif |
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112 | |
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113 | unsigned int img_output_version = 3; |
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114 | |
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115 | #ifdef IMG_HOSTED |
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116 | static enum { |
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117 | IMG_NONE = 0, |
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118 | IMG_FILENOTFOUND = /*Couldn't open data file `%s'*/24, |
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119 | IMG_OUTOFMEMORY = /*Out of memory %.0s*/38, |
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120 | IMG_DIRECTORY = /*Filename `%s' refers to directory*/44, |
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121 | IMG_CANTOPENOUT = /*Failed to open output file `%s'*/47, |
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122 | IMG_BADFORMAT = /*Bad 3d image file `%s'*/106, |
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123 | IMG_READERROR = /*Error reading from file `%s'*/109, |
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124 | IMG_WRITEERROR = /*Error writing to file `%s'*/110, |
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125 | IMG_TOONEW = /*File `%s' has a newer format than this program can understand*/114 |
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126 | } img_errno = IMG_NONE; |
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127 | #else |
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128 | static img_errcode img_errno = IMG_NONE; |
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129 | #endif |
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130 | |
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131 | #define FILEID "Survex 3D Image File" |
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132 | |
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133 | #define EXT_PLT "plt" |
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134 | |
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135 | /* Attempt to string paste to ensure we are passed a literal string */ |
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136 | #define LITLEN(S) (sizeof(S"") - 1) |
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137 | |
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138 | static char * |
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139 | my_strdup(const char *str) |
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140 | { |
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141 | char *p; |
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142 | size_t len = strlen(str) + 1; |
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143 | p = xosmalloc(len); |
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144 | if (p) memcpy(p, str, len); |
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145 | return p; |
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146 | } |
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147 | |
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148 | static char * |
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149 | getline_alloc(FILE *fh) |
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150 | { |
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151 | int ch; |
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152 | size_t i = 0; |
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153 | size_t len = 16; |
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154 | char *buf = xosmalloc(len); |
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155 | if (!buf) return NULL; |
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156 | |
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157 | ch = getc(fh); |
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158 | while (ch != '\n' && ch != '\r' && ch != EOF) { |
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159 | buf[i++] = ch; |
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160 | if (i == len - 1) { |
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161 | char *p; |
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162 | len += len; |
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163 | p = xosrealloc(buf, len); |
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164 | if (!p) { |
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165 | osfree(buf); |
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166 | return NULL; |
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167 | } |
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168 | buf = p; |
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169 | } |
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170 | ch = getc(fh); |
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171 | } |
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172 | if (ch == '\n' || ch == '\r') { |
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173 | int otherone = ch ^ ('\n' ^ '\r'); |
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174 | ch = getc(fh); |
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175 | /* if it's not the other eol character, put it back */ |
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176 | if (ch != otherone) ungetc(ch, fh); |
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177 | } |
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178 | buf[i++] = '\0'; |
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179 | return buf; |
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180 | } |
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181 | |
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182 | #ifndef IMG_HOSTED |
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183 | img_errcode |
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184 | img_error(void) |
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185 | { |
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186 | return img_errno; |
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187 | } |
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188 | #else |
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189 | int |
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190 | img_error(void) |
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191 | { |
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192 | return (int)img_errno; |
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193 | } |
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194 | #endif |
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195 | |
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196 | static bool |
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197 | check_label_space(img *pimg, size_t len) |
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198 | { |
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199 | if (len > pimg->buf_len) { |
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200 | char *b = xosrealloc(pimg->label_buf, len); |
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201 | if (!b) return fFalse; |
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202 | pimg->label = (pimg->label - pimg->label_buf) + b; |
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203 | pimg->label_buf = b; |
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204 | pimg->buf_len = len; |
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205 | } |
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206 | return fTrue; |
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207 | } |
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208 | |
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209 | img * |
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210 | img_open_survey(const char *fnm, const char *survey) |
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211 | { |
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212 | img *pimg; |
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213 | size_t len; |
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214 | char buf[LITLEN(FILEID) + 1]; |
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215 | int ch; |
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216 | |
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217 | if (fDirectory(fnm)) { |
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218 | img_errno = IMG_DIRECTORY; |
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219 | return NULL; |
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220 | } |
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221 | |
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222 | pimg = (img *)xosmalloc(ossizeof(img)); |
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223 | if (pimg == NULL) { |
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224 | img_errno = IMG_OUTOFMEMORY; |
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225 | return NULL; |
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226 | } |
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227 | |
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228 | pimg->buf_len = 257; |
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229 | pimg->label_buf = xosmalloc(pimg->buf_len); |
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230 | if (!pimg->label_buf) { |
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231 | osfree(pimg); |
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232 | img_errno = IMG_OUTOFMEMORY; |
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233 | return NULL; |
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234 | } |
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235 | |
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236 | pimg->fh = fopenWithPthAndExt("", fnm, EXT_SVX_3D, "rb", NULL); |
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237 | if (pimg->fh == NULL) { |
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238 | osfree(pimg); |
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239 | img_errno = IMG_FILENOTFOUND; |
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240 | return NULL; |
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241 | } |
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242 | |
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243 | pimg->fRead = fTrue; /* reading from this file */ |
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244 | img_errno = IMG_NONE; |
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245 | |
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246 | pimg->flags = 0; |
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247 | |
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248 | /* for version 3 we use label_buf to store the prefix for reuse */ |
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249 | /* for version -2, 0 value indicates we haven't entered a survey yet */ |
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250 | pimg->label_len = 0; |
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251 | |
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252 | pimg->survey = NULL; |
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253 | pimg->survey_len = 0; |
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254 | |
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255 | pimg->title = NULL; |
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256 | if (survey) { |
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257 | len = strlen(survey); |
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258 | if (len) { |
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259 | if (survey[len - 1] == '.') len--; |
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260 | if (len) { |
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261 | char *p; |
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262 | pimg->survey = osmalloc(len + 2); |
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263 | memcpy(pimg->survey, survey, len); |
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264 | /* Set title to leaf survey name */ |
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265 | pimg->survey[len] = '\0'; |
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266 | p = strchr(pimg->survey, '.'); |
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267 | if (p) p++; else p = pimg->survey; |
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268 | pimg->title = my_strdup(p); |
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269 | if (!pimg->title) { |
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270 | img_errno = IMG_OUTOFMEMORY; |
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271 | goto error; |
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272 | } |
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273 | pimg->survey[len] = '.'; |
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274 | pimg->survey[len + 1] = '\0'; |
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275 | } |
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276 | } |
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277 | pimg->survey_len = len; |
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278 | } |
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279 | |
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280 | /* [version -2] pending IMG_LINE ('D') or IMG_MOVE ('M') |
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281 | * [version -1] already skipped heading line, or there wasn't one |
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282 | * [version 0] not in the middle of a 'LINE' command |
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283 | * [version 3] not in the middle of turning a LINE into a MOVE |
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284 | */ |
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285 | pimg->pending = 0; |
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286 | |
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287 | len = strlen(fnm); |
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288 | if (len > LITLEN(EXT_SVX_POS) + 1 && |
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289 | fnm[len - LITLEN(EXT_SVX_POS) - 1] == FNM_SEP_EXT && |
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290 | my_strcasecmp(fnm + len - LITLEN(EXT_SVX_POS), EXT_SVX_POS) == 0) { |
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291 | pos_file: |
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292 | pimg->version = -1; |
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293 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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294 | pimg->datestamp = my_strdup(TIMENA); |
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295 | if (!pimg->datestamp) { |
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296 | img_errno = IMG_OUTOFMEMORY; |
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297 | goto error; |
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298 | } |
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299 | pimg->start = 0; |
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300 | return pimg; |
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301 | } |
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302 | |
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303 | if (len > LITLEN(EXT_PLT) + 1 && |
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304 | fnm[len - LITLEN(EXT_PLT) - 1] == FNM_SEP_EXT && |
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305 | my_strcasecmp(fnm + len - LITLEN(EXT_PLT), EXT_PLT) == 0) { |
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306 | long fpos; |
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307 | plt_file: |
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308 | pimg->version = -2; |
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309 | pimg->start = 0; |
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310 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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311 | pimg->datestamp = my_strdup(TIMENA); |
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312 | if (!pimg->datestamp) { |
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313 | img_errno = IMG_OUTOFMEMORY; |
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314 | goto error; |
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315 | } |
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316 | while (1) { |
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317 | int ch = getc(pimg->fh); |
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318 | switch (ch) { |
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319 | case '\x1a': |
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320 | fseek(pimg->fh, -1, SEEK_CUR); |
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321 | /* FALL THRU */ |
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322 | case EOF: |
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323 | pimg->start = ftell(pimg->fh); |
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324 | return pimg; |
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325 | case 'N': { |
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326 | char *line, *q; |
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327 | fpos = ftell(pimg->fh) - 1; |
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328 | if (!pimg->survey) { |
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329 | /* FIXME : if there's only one survey in the file, it'd be nice |
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330 | * to use its description as the title here... |
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331 | */ |
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332 | ungetc('N', pimg->fh); |
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333 | pimg->start = fpos; |
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334 | return pimg; |
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335 | } |
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336 | line = getline_alloc(pimg->fh); |
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337 | len = 0; |
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338 | while (line[len] > 32) ++len; |
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339 | if (pimg->survey_len != len || |
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340 | memcmp(line, pimg->survey, len) != 0) { |
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341 | osfree(line); |
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342 | continue; |
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343 | } |
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344 | q = strchr(line + len, 'C'); |
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345 | if (q && q[1]) { |
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346 | osfree(pimg->title); |
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347 | pimg->title = osstrdup(q + 1); |
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348 | } else if (!pimg->title) { |
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349 | pimg->title = osstrdup(pimg->label); |
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350 | } |
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351 | osfree(line); |
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352 | if (!pimg->title) { |
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353 | img_errno = IMG_OUTOFMEMORY; |
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354 | goto error; |
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355 | } |
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356 | if (!pimg->start) pimg->start = fpos; |
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357 | fseek(pimg->fh, pimg->start, SEEK_SET); |
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358 | return pimg; |
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359 | } |
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360 | case 'M': case 'D': |
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361 | pimg->start = ftell(pimg->fh) - 1; |
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362 | break; |
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363 | } |
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364 | while (ch != '\n' && ch != '\r') { |
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365 | ch = getc(pimg->fh); |
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366 | } |
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367 | } |
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368 | } |
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369 | |
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370 | if (fread(buf, LITLEN(FILEID) + 1, 1, pimg->fh) != 1 || |
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371 | memcmp(buf, FILEID"\n", LITLEN(FILEID)) != 0) { |
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372 | if (buf[0] == 'Z' && buf[1] == ' ') { |
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373 | /* Looks like a Compass .plt file ... */ |
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374 | rewind(pimg->fh); |
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375 | goto plt_file; |
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376 | } |
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377 | if (buf[0] == '(') { |
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378 | /* Looks like a Survex .pos file ... */ |
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379 | rewind(pimg->fh); |
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380 | goto pos_file; |
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381 | } |
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382 | img_errno = IMG_BADFORMAT; |
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383 | goto error; |
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384 | } |
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385 | |
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386 | /* check file format version */ |
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387 | ch = getc(pimg->fh); |
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388 | pimg->version = 0; |
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389 | if (tolower(ch) == 'b') { |
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390 | /* binary file iff B/b prefix */ |
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391 | pimg->version = 1; |
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392 | ch = getc(pimg->fh); |
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393 | } |
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394 | if (ch != 'v') { |
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395 | img_errno = IMG_BADFORMAT; |
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396 | goto error; |
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397 | } |
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398 | ch = getc(pimg->fh); |
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399 | if (ch == '0') { |
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400 | if (fread(buf, 4, 1, pimg->fh) != 1 || memcmp(buf, ".01\n", 4) != 0) { |
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401 | img_errno = IMG_BADFORMAT; |
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402 | goto error; |
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403 | } |
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404 | /* nothing special to do */ |
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405 | } else if (pimg->version == 0) { |
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406 | if (ch < '2' || ch > '3' || getc(pimg->fh) != '\n') { |
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407 | img_errno = IMG_TOONEW; |
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408 | goto error; |
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409 | } |
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410 | pimg->version = ch - '0'; |
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411 | } else { |
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412 | img_errno = IMG_BADFORMAT; |
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413 | goto error; |
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414 | } |
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415 | |
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416 | if (!pimg->title) |
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417 | pimg->title = getline_alloc(pimg->fh); |
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418 | else |
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419 | osfree(getline_alloc(pimg->fh)); |
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420 | pimg->datestamp = getline_alloc(pimg->fh); |
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421 | if (!pimg->title || !pimg->datestamp) { |
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422 | img_errno = IMG_OUTOFMEMORY; |
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423 | error: |
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424 | osfree(pimg->title); |
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425 | osfree(pimg->datestamp); |
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426 | fclose(pimg->fh); |
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427 | osfree(pimg); |
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428 | return NULL; |
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429 | } |
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430 | |
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431 | pimg->start = ftell(pimg->fh); |
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432 | |
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433 | return pimg; |
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434 | } |
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435 | |
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436 | int |
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437 | img_rewind(img *pimg) |
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438 | { |
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439 | if (!pimg->fRead) { |
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440 | img_errno = IMG_WRITEERROR; |
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441 | return 0; |
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442 | } |
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443 | if (fseek(pimg->fh, pimg->start, SEEK_SET) != 0) { |
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444 | img_errno = IMG_READERROR; |
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445 | return 0; |
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446 | } |
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447 | clearerr(pimg->fh); |
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448 | /* [version -1] already skipped heading line, or there wasn't one |
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449 | * [version 0] not in the middle of a 'LINE' command |
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450 | * [version 3] not in the middle of turning a LINE into a MOVE */ |
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451 | pimg->pending = 0; |
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452 | |
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453 | img_errno = IMG_NONE; |
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454 | |
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455 | /* for version 3 we use label_buf to store the prefix for reuse */ |
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456 | /* for version -2, 0 value indicates we haven't entered a survey yet */ |
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457 | pimg->label_len = 0; |
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458 | return 1; |
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459 | } |
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460 | |
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461 | img * |
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462 | img_open_write(const char *fnm, char *title_buf, bool fBinary) |
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463 | { |
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464 | time_t tm; |
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465 | img *pimg; |
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466 | |
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467 | fBinary = fBinary; |
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468 | |
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469 | if (fDirectory(fnm)) { |
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470 | img_errno = IMG_DIRECTORY; |
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471 | return NULL; |
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472 | } |
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473 | |
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474 | pimg = (img *)xosmalloc(ossizeof(img)); |
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475 | if (pimg == NULL) { |
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476 | img_errno = IMG_OUTOFMEMORY; |
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477 | return NULL; |
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478 | } |
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479 | |
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480 | pimg->buf_len = 257; |
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481 | pimg->label_buf = xosmalloc(pimg->buf_len); |
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482 | if (!pimg->label_buf) { |
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483 | osfree(pimg); |
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484 | img_errno = IMG_OUTOFMEMORY; |
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485 | return NULL; |
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486 | } |
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487 | |
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488 | pimg->fh = fopen(fnm, "wb"); |
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489 | if (!pimg->fh) { |
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490 | osfree(pimg); |
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491 | img_errno = IMG_CANTOPENOUT; |
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492 | return NULL; |
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493 | } |
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494 | |
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495 | /* Output image file header */ |
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496 | fputs("Survex 3D Image File\n", pimg->fh); /* file identifier string */ |
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497 | if (img_output_version < 2) { |
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498 | pimg->version = 1; |
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499 | fputs("Bv0.01\n", pimg->fh); /* binary file format version number */ |
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500 | } else { |
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501 | pimg->version = (img_output_version > 2) ? 3 : 2; |
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502 | fprintf(pimg->fh, "v%d\n", pimg->version); /* file format version no. */ |
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503 | } |
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504 | fputsnl(title_buf, pimg->fh); |
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505 | tm = time(NULL); |
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506 | if (tm == (time_t)-1) { |
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507 | fputsnl(TIMENA, pimg->fh); |
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508 | } else { |
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509 | char date[256]; |
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510 | /* output current date and time in format specified */ |
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511 | strftime(date, 256, TIMEFMT, localtime(&tm)); |
---|
512 | fputsnl(date, pimg->fh); |
---|
513 | } |
---|
514 | pimg->fRead = fFalse; /* writing to this file */ |
---|
515 | img_errno = IMG_NONE; |
---|
516 | |
---|
517 | /* for version 3 we use label_buf to store the prefix for reuse */ |
---|
518 | pimg->label_buf[0] = '\0'; |
---|
519 | pimg->label_len = 0; |
---|
520 | |
---|
521 | /* Don't check for write errors now - let img_close() report them... */ |
---|
522 | return pimg; |
---|
523 | } |
---|
524 | |
---|
525 | static int |
---|
526 | read_coord(FILE *fh, img_point *pt) |
---|
527 | { |
---|
528 | ASSERT(fh); |
---|
529 | ASSERT(pt); |
---|
530 | pt->x = get32(fh) / 100.0; |
---|
531 | pt->y = get32(fh) / 100.0; |
---|
532 | pt->z = get32(fh) / 100.0; |
---|
533 | if (ferror(fh) || feof(fh)) { |
---|
534 | img_errno = feof(fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
535 | return 0; |
---|
536 | } |
---|
537 | return 1; |
---|
538 | } |
---|
539 | |
---|
540 | static int |
---|
541 | skip_coord(FILE *fh) |
---|
542 | { |
---|
543 | return (fseek(fh, 12, SEEK_CUR) == 0); |
---|
544 | } |
---|
545 | |
---|
546 | int |
---|
547 | img_read_item(img *pimg, img_point *p) |
---|
548 | { |
---|
549 | int result; |
---|
550 | pimg->flags = 0; |
---|
551 | |
---|
552 | if (pimg->version == 3) { |
---|
553 | int opt; |
---|
554 | if (pimg->pending >= 0x80) { |
---|
555 | *p = pimg->mv; |
---|
556 | pimg->flags = (int)(pimg->pending) & 0x3f; |
---|
557 | pimg->pending = 0; |
---|
558 | return img_LINE; |
---|
559 | } |
---|
560 | again3: /* label to goto if we get a prefix */ |
---|
561 | pimg->label = pimg->label_buf; |
---|
562 | opt = getc(pimg->fh); |
---|
563 | if (opt == EOF) { |
---|
564 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
565 | return img_BAD; |
---|
566 | } |
---|
567 | switch (opt >> 6) { |
---|
568 | case 0: |
---|
569 | if (opt == 0) { |
---|
570 | if (!pimg->label_len) return img_STOP; /* end of data marker */ |
---|
571 | pimg->label_len = 0; |
---|
572 | goto again3; |
---|
573 | } |
---|
574 | if (opt < 15) { |
---|
575 | /* 1-14 mean trim that many levels from current prefix */ |
---|
576 | int c; |
---|
577 | if (pimg->label_len <= 16) { |
---|
578 | /* zero prefix using "0" */ |
---|
579 | img_errno = IMG_BADFORMAT; |
---|
580 | return img_BAD; |
---|
581 | } |
---|
582 | c = pimg->label_len - 16 - 1; |
---|
583 | while (pimg->label_buf[c] != '.' || --opt > 0) { |
---|
584 | if (--c < 0) { |
---|
585 | /* zero prefix using "0" */ |
---|
586 | img_errno = IMG_BADFORMAT; |
---|
587 | return img_BAD; |
---|
588 | } |
---|
589 | } |
---|
590 | c++; |
---|
591 | pimg->label_len = c; |
---|
592 | goto again3; |
---|
593 | } |
---|
594 | if (opt == 15) { |
---|
595 | result = img_MOVE; |
---|
596 | break; |
---|
597 | } |
---|
598 | /* 16-31 mean remove (n - 15) characters from the prefix */ |
---|
599 | /* zero prefix using 0 */ |
---|
600 | if (pimg->label_len <= (size_t)(opt - 15)) { |
---|
601 | img_errno = IMG_BADFORMAT; |
---|
602 | return img_BAD; |
---|
603 | } |
---|
604 | pimg->label_len -= (opt - 15); |
---|
605 | goto again3; |
---|
606 | case 1: case 2: { |
---|
607 | char *q; |
---|
608 | long len = getc(pimg->fh); |
---|
609 | if (len == EOF) { |
---|
610 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
611 | return img_BAD; |
---|
612 | } |
---|
613 | if (len == 0xfe) { |
---|
614 | len += get16(pimg->fh); |
---|
615 | if (feof(pimg->fh)) { |
---|
616 | img_errno = IMG_BADFORMAT; |
---|
617 | return img_BAD; |
---|
618 | } |
---|
619 | if (ferror(pimg->fh)) { |
---|
620 | img_errno = IMG_READERROR; |
---|
621 | return img_BAD; |
---|
622 | } |
---|
623 | } else if (len == 0xff) { |
---|
624 | len = get32(pimg->fh); |
---|
625 | if (ferror(pimg->fh)) { |
---|
626 | img_errno = IMG_READERROR; |
---|
627 | return img_BAD; |
---|
628 | } |
---|
629 | if (feof(pimg->fh) || len < 0xfe + 0xffff) { |
---|
630 | img_errno = IMG_BADFORMAT; |
---|
631 | return img_BAD; |
---|
632 | } |
---|
633 | } |
---|
634 | |
---|
635 | if (!check_label_space(pimg, pimg->label_len + len + 1)) { |
---|
636 | img_errno = IMG_OUTOFMEMORY; |
---|
637 | return img_BAD; |
---|
638 | } |
---|
639 | q = pimg->label_buf + pimg->label_len; |
---|
640 | pimg->label_len += len; |
---|
641 | if (len && fread(q, len, 1, pimg->fh) != 1) { |
---|
642 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
643 | return img_BAD; |
---|
644 | } |
---|
645 | q[len] = '\0'; |
---|
646 | |
---|
647 | result = opt & 0x40 ? img_LABEL : img_LINE; |
---|
648 | |
---|
649 | if (pimg->survey_len) { |
---|
650 | size_t l = pimg->survey_len; |
---|
651 | const char *s = pimg->label_buf; |
---|
652 | if (result == img_LINE) { |
---|
653 | if (strncmp(pimg->survey, s, l) != 0 || |
---|
654 | !(s[l] == '.' || s[l] == '\0')) { |
---|
655 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
656 | pimg->pending = 15; |
---|
657 | goto again3; |
---|
658 | } |
---|
659 | } else { |
---|
660 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
---|
661 | if (!skip_coord(pimg->fh)) return img_BAD; |
---|
662 | pimg->pending = 0; |
---|
663 | goto again3; |
---|
664 | } |
---|
665 | } |
---|
666 | pimg->label += l; |
---|
667 | /* skip the dot if there */ |
---|
668 | if (*pimg->label) pimg->label++; |
---|
669 | } |
---|
670 | |
---|
671 | if (result == img_LINE && pimg->pending) { |
---|
672 | *p = pimg->mv; |
---|
673 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
674 | pimg->pending = opt; |
---|
675 | return img_MOVE; |
---|
676 | } |
---|
677 | pimg->flags = (int)opt & 0x3f; |
---|
678 | break; |
---|
679 | } |
---|
680 | default: |
---|
681 | img_errno = IMG_BADFORMAT; |
---|
682 | return img_BAD; |
---|
683 | } |
---|
684 | if (!read_coord(pimg->fh, p)) return img_BAD; |
---|
685 | pimg->pending = 0; |
---|
686 | return result; |
---|
687 | } |
---|
688 | |
---|
689 | pimg->label = pimg->label_buf; |
---|
690 | |
---|
691 | if (pimg->version > 0) { |
---|
692 | static long opt_lookahead = 0; |
---|
693 | static img_point pt = { 0.0, 0.0, 0.0 }; |
---|
694 | long opt; |
---|
695 | again: /* label to goto if we get a cross */ |
---|
696 | pimg->label[0] = '\0'; |
---|
697 | |
---|
698 | if (pimg->version == 1) { |
---|
699 | if (opt_lookahead) { |
---|
700 | opt = opt_lookahead; |
---|
701 | opt_lookahead = 0; |
---|
702 | } else { |
---|
703 | opt = get32(pimg->fh); |
---|
704 | } |
---|
705 | } else { |
---|
706 | opt = getc(pimg->fh); |
---|
707 | } |
---|
708 | |
---|
709 | if (feof(pimg->fh)) { |
---|
710 | img_errno = IMG_BADFORMAT; |
---|
711 | return img_BAD; |
---|
712 | } |
---|
713 | if (ferror(pimg->fh)) { |
---|
714 | img_errno = IMG_READERROR; |
---|
715 | return img_BAD; |
---|
716 | } |
---|
717 | |
---|
718 | switch (opt) { |
---|
719 | case -1: case 0: |
---|
720 | return img_STOP; /* end of data marker */ |
---|
721 | case 1: |
---|
722 | /* skip coordinates */ |
---|
723 | if (!skip_coord(pimg->fh)) { |
---|
724 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
725 | return img_BAD; |
---|
726 | } |
---|
727 | goto again; |
---|
728 | case 2: case 3: { |
---|
729 | char *q; |
---|
730 | int ch; |
---|
731 | result = img_LABEL; |
---|
732 | ch = getc(pimg->fh); |
---|
733 | if (ch == EOF) { |
---|
734 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
735 | return img_BAD; |
---|
736 | } |
---|
737 | if (ch != '\\') ungetc(ch, pimg->fh); |
---|
738 | fgets(pimg->label_buf, 257, pimg->fh); |
---|
739 | if (feof(pimg->fh)) { |
---|
740 | img_errno = IMG_BADFORMAT; |
---|
741 | return img_BAD; |
---|
742 | } |
---|
743 | if (ferror(pimg->fh)) { |
---|
744 | img_errno = IMG_READERROR; |
---|
745 | return img_BAD; |
---|
746 | } |
---|
747 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
748 | if (*q != '\n') { |
---|
749 | img_errno = IMG_BADFORMAT; |
---|
750 | return img_BAD; |
---|
751 | } |
---|
752 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
753 | if (q == pimg->label_buf) goto again; |
---|
754 | *q = '\0'; |
---|
755 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
756 | if (opt == 2) goto done; |
---|
757 | break; |
---|
758 | } |
---|
759 | case 6: case 7: { |
---|
760 | long len; |
---|
761 | result = img_LABEL; |
---|
762 | |
---|
763 | if (opt == 7) |
---|
764 | pimg->flags = getc(pimg->fh); |
---|
765 | else |
---|
766 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
767 | |
---|
768 | len = get32(pimg->fh); |
---|
769 | |
---|
770 | if (feof(pimg->fh)) { |
---|
771 | img_errno = IMG_BADFORMAT; |
---|
772 | return img_BAD; |
---|
773 | } |
---|
774 | if (ferror(pimg->fh)) { |
---|
775 | img_errno = IMG_READERROR; |
---|
776 | return img_BAD; |
---|
777 | } |
---|
778 | |
---|
779 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
780 | if (len == 0) goto again; |
---|
781 | if (!check_label_space(pimg, len + 1)) { |
---|
782 | img_errno = IMG_OUTOFMEMORY; |
---|
783 | return img_BAD; |
---|
784 | } |
---|
785 | if (fread(pimg->label_buf, len, 1, pimg->fh) != 1) { |
---|
786 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
787 | return img_BAD; |
---|
788 | } |
---|
789 | break; |
---|
790 | } |
---|
791 | case 4: |
---|
792 | result = img_MOVE; |
---|
793 | break; |
---|
794 | case 5: |
---|
795 | result = img_LINE; |
---|
796 | break; |
---|
797 | default: |
---|
798 | switch ((int)opt & 0xc0) { |
---|
799 | case 0x80: |
---|
800 | pimg->flags = (int)opt & 0x3f; |
---|
801 | result = img_LINE; |
---|
802 | break; |
---|
803 | case 0x40: { |
---|
804 | char *q; |
---|
805 | pimg->flags = (int)opt & 0x3f; |
---|
806 | result = img_LABEL; |
---|
807 | if (!fgets(pimg->label_buf, 257, pimg->fh)) { |
---|
808 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
809 | return img_BAD; |
---|
810 | } |
---|
811 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
812 | /* Ignore empty-labels in some .3d files (caused by a bug) */ |
---|
813 | if (q == pimg->label_buf) goto again; |
---|
814 | if (*q != '\n') { |
---|
815 | img_errno = IMG_BADFORMAT; |
---|
816 | return img_BAD; |
---|
817 | } |
---|
818 | *q = '\0'; |
---|
819 | break; |
---|
820 | } |
---|
821 | case 0xc0: |
---|
822 | /* use this for an extra leg or station flag if we need it */ |
---|
823 | default: |
---|
824 | img_errno = IMG_BADFORMAT; |
---|
825 | return img_BAD; |
---|
826 | } |
---|
827 | break; |
---|
828 | } |
---|
829 | |
---|
830 | if (!read_coord(pimg->fh, &pt)) return img_BAD; |
---|
831 | |
---|
832 | if (result == img_LABEL && pimg->survey_len) { |
---|
833 | if (strncmp(pimg->label_buf, pimg->survey, pimg->survey_len + 1) != 0) |
---|
834 | goto again; |
---|
835 | pimg->label += pimg->survey_len + 1; |
---|
836 | } |
---|
837 | |
---|
838 | done: |
---|
839 | *p = pt; |
---|
840 | |
---|
841 | if (result == img_MOVE && pimg->version == 1) { |
---|
842 | /* peek at next code and see if it's an old-style label */ |
---|
843 | opt_lookahead = get32(pimg->fh); |
---|
844 | |
---|
845 | if (feof(pimg->fh)) { |
---|
846 | img_errno = IMG_BADFORMAT; |
---|
847 | return img_BAD; |
---|
848 | } |
---|
849 | if (ferror(pimg->fh)) { |
---|
850 | img_errno = IMG_READERROR; |
---|
851 | return img_BAD; |
---|
852 | } |
---|
853 | |
---|
854 | if (opt_lookahead == 2) return img_read_item(pimg, p); |
---|
855 | } |
---|
856 | |
---|
857 | return result; |
---|
858 | } else if (pimg->version == 0) { |
---|
859 | ascii_again: |
---|
860 | pimg->label[0] = '\0'; |
---|
861 | if (feof(pimg->fh)) return img_STOP; |
---|
862 | if (pimg->pending) { |
---|
863 | pimg->pending = 0; |
---|
864 | result = img_LINE; |
---|
865 | } else { |
---|
866 | char cmd[7]; |
---|
867 | /* Stop if nothing found */ |
---|
868 | if (fscanf(pimg->fh, "%6s", cmd) < 1) return img_STOP; |
---|
869 | if (strcmp(cmd, "move") == 0) |
---|
870 | result = img_MOVE; |
---|
871 | else if (strcmp(cmd, "draw") == 0) |
---|
872 | result = img_LINE; |
---|
873 | else if (strcmp(cmd, "line") == 0) { |
---|
874 | /* set flag to indicate to process second triplet as LINE */ |
---|
875 | pimg->pending = 1; |
---|
876 | result = img_MOVE; |
---|
877 | } else if (strcmp(cmd, "cross") == 0) { |
---|
878 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
879 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
880 | return img_BAD; |
---|
881 | } |
---|
882 | goto ascii_again; |
---|
883 | } else if (strcmp(cmd, "name") == 0) { |
---|
884 | size_t off = 0; |
---|
885 | int ch = getc(pimg->fh); |
---|
886 | if (ch == ' ') ch = getc(pimg->fh); |
---|
887 | while (ch != ' ') { |
---|
888 | if (ch == '\n' || ch == EOF) { |
---|
889 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
890 | return img_BAD; |
---|
891 | } |
---|
892 | if (off == pimg->buf_len) { |
---|
893 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
894 | img_errno = IMG_OUTOFMEMORY; |
---|
895 | return img_BAD; |
---|
896 | } |
---|
897 | } |
---|
898 | pimg->label_buf[off++] = ch; |
---|
899 | ch = getc(pimg->fh); |
---|
900 | } |
---|
901 | pimg->label_buf[off] = '\0'; |
---|
902 | |
---|
903 | pimg->label = pimg->label_buf; |
---|
904 | if (pimg->label[0] == '\\') pimg->label++; |
---|
905 | |
---|
906 | result = img_LABEL; |
---|
907 | } else { |
---|
908 | img_errno = IMG_BADFORMAT; |
---|
909 | return img_BAD; /* unknown keyword */ |
---|
910 | } |
---|
911 | } |
---|
912 | |
---|
913 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
914 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
915 | return img_BAD; |
---|
916 | } |
---|
917 | |
---|
918 | if (result == img_LABEL && pimg->survey_len) { |
---|
919 | if (strncmp(pimg->label, pimg->survey, pimg->survey_len + 1) != 0) |
---|
920 | goto ascii_again; |
---|
921 | pimg->label += pimg->survey_len + 1; |
---|
922 | } |
---|
923 | |
---|
924 | return result; |
---|
925 | } else if (pimg->version == -1) { |
---|
926 | /* version -1: .pos file */ |
---|
927 | size_t off; |
---|
928 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
929 | againpos: |
---|
930 | off = 0; |
---|
931 | while (fscanf(pimg->fh, "(%lf,%lf,%lf ) ", &p->x, &p->y, &p->z) != 3) { |
---|
932 | int ch; |
---|
933 | if (ferror(pimg->fh)) { |
---|
934 | img_errno = IMG_READERROR; |
---|
935 | return img_BAD; |
---|
936 | } |
---|
937 | if (feof(pimg->fh)) return img_STOP; |
---|
938 | if (pimg->pending) { |
---|
939 | img_errno = IMG_BADFORMAT; |
---|
940 | return img_BAD; |
---|
941 | } |
---|
942 | pimg->pending = 1; |
---|
943 | /* ignore rest of line */ |
---|
944 | do { |
---|
945 | ch = getc(pimg->fh); |
---|
946 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
947 | } |
---|
948 | |
---|
949 | pimg->label_buf[0] = '\0'; |
---|
950 | while (!feof(pimg->fh)) { |
---|
951 | char *b; |
---|
952 | if (!fgets(pimg->label_buf + off, pimg->buf_len - off, pimg->fh)) { |
---|
953 | img_errno = IMG_READERROR; |
---|
954 | return img_BAD; |
---|
955 | } |
---|
956 | |
---|
957 | off += strlen(pimg->label_buf + off); |
---|
958 | if (off && pimg->label_buf[off - 1] == '\n') { |
---|
959 | pimg->label_buf[off - 1] = '\0'; |
---|
960 | break; |
---|
961 | } |
---|
962 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
963 | img_errno = IMG_OUTOFMEMORY; |
---|
964 | return img_BAD; |
---|
965 | } |
---|
966 | } |
---|
967 | |
---|
968 | pimg->label = pimg->label_buf; |
---|
969 | |
---|
970 | if (pimg->label[0] == '\\') pimg->label++; |
---|
971 | |
---|
972 | if (pimg->survey_len) { |
---|
973 | size_t l = pimg->survey_len + 1; |
---|
974 | if (strncmp(pimg->survey, pimg->label, l) != 0) goto againpos; |
---|
975 | pimg->label += l; |
---|
976 | } |
---|
977 | |
---|
978 | return img_LABEL; |
---|
979 | } else { |
---|
980 | /* version -2: Compass .plt file */ |
---|
981 | if (pimg->pending > 0) { |
---|
982 | /* -1 signals we've entered the first survey we want to |
---|
983 | * read, and need to fudge lots if the first action is 'D'... |
---|
984 | */ |
---|
985 | /* pending MOVE or LINE */ |
---|
986 | int r = pimg->pending - 4; |
---|
987 | pimg->pending = 0; |
---|
988 | pimg->flags = 0; |
---|
989 | pimg->label[pimg->label_len] = '\0'; |
---|
990 | return r; |
---|
991 | } |
---|
992 | |
---|
993 | while (1) { |
---|
994 | char *line; |
---|
995 | char *q; |
---|
996 | size_t len = 0; |
---|
997 | int ch = getc(pimg->fh); |
---|
998 | |
---|
999 | switch (ch) { |
---|
1000 | case '\x1a': case EOF: /* Don't insist on ^Z at end of file */ |
---|
1001 | return img_STOP; |
---|
1002 | case 'X': case 'F': case 'S': |
---|
1003 | /* bounding boX (marks end of survey), Feature survey, or |
---|
1004 | * new Section - skip to next survey */ |
---|
1005 | if (pimg->survey) return img_STOP; |
---|
1006 | skip_to_N: |
---|
1007 | while (1) { |
---|
1008 | do { |
---|
1009 | ch = getc(pimg->fh); |
---|
1010 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
1011 | while (ch == '\n' || ch == '\r') ch = getc(pimg->fh); |
---|
1012 | if (ch == 'N') break; |
---|
1013 | if (ch == '\x1a' || ch == EOF) return img_STOP; |
---|
1014 | } |
---|
1015 | /* FALLTHRU */ |
---|
1016 | case 'N': |
---|
1017 | line = getline_alloc(pimg->fh); |
---|
1018 | while (line[len] > 32) ++len; |
---|
1019 | if (pimg->survey && pimg->label_len == 0) |
---|
1020 | pimg->pending = -1; |
---|
1021 | if (!check_label_space(pimg, len + 1)) { |
---|
1022 | osfree(line); |
---|
1023 | img_errno = IMG_OUTOFMEMORY; |
---|
1024 | return img_BAD; |
---|
1025 | } |
---|
1026 | pimg->label_len = len; |
---|
1027 | pimg->label = pimg->label_buf; |
---|
1028 | memcpy(pimg->label, line, len); |
---|
1029 | pimg->label[len] = '\0'; |
---|
1030 | osfree(line); |
---|
1031 | break; |
---|
1032 | case 'M': case 'D': { |
---|
1033 | /* Move or Draw */ |
---|
1034 | long fpos = -1; |
---|
1035 | if (pimg->survey && pimg->label_len == 0) { |
---|
1036 | /* We're only holding onto this line in case the first line |
---|
1037 | * of the 'N' is a 'D', so skip it for now... |
---|
1038 | */ |
---|
1039 | goto skip_to_N; |
---|
1040 | } |
---|
1041 | if (ch == 'D' && pimg->pending == -1) { |
---|
1042 | fpos = ftell(pimg->fh) - 1; |
---|
1043 | fseek(pimg->fh, pimg->start, SEEK_SET); |
---|
1044 | ch = getc(pimg->fh); |
---|
1045 | pimg->pending = 0; |
---|
1046 | } |
---|
1047 | line = getline_alloc(pimg->fh); |
---|
1048 | if (sscanf(line, "%lf %lf %lf", &p->x, &p->y, &p->z) != 3) { |
---|
1049 | osfree(line); |
---|
1050 | if (ferror(pimg->fh)) { |
---|
1051 | img_errno = IMG_READERROR; |
---|
1052 | } else { |
---|
1053 | img_errno = IMG_BADFORMAT; |
---|
1054 | } |
---|
1055 | return img_BAD; |
---|
1056 | } |
---|
1057 | q = strchr(line, 'S'); |
---|
1058 | if (!q) { |
---|
1059 | osfree(line); |
---|
1060 | img_errno = IMG_BADFORMAT; |
---|
1061 | return img_BAD; |
---|
1062 | } |
---|
1063 | ++q; |
---|
1064 | len = 0; |
---|
1065 | while (q[len] > ' ') ++len; |
---|
1066 | q[len] = '\0'; |
---|
1067 | len += 2; /* '.' and '\0' */ |
---|
1068 | if (!check_label_space(pimg, pimg->label_len + len)) { |
---|
1069 | img_errno = IMG_OUTOFMEMORY; |
---|
1070 | return img_BAD; |
---|
1071 | } |
---|
1072 | pimg->label = pimg->label_buf; |
---|
1073 | pimg->label[pimg->label_len] = '.'; |
---|
1074 | memcpy(pimg->label + pimg->label_len + 1, q, len - 1); |
---|
1075 | osfree(line); |
---|
1076 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
1077 | if (fpos != -1) { |
---|
1078 | fseek(pimg->fh, fpos, SEEK_SET); |
---|
1079 | } else { |
---|
1080 | pimg->pending = (ch == 'M' ? img_MOVE : img_LINE) + 4; |
---|
1081 | } |
---|
1082 | return img_LABEL; |
---|
1083 | } |
---|
1084 | default: |
---|
1085 | img_errno = IMG_BADFORMAT; |
---|
1086 | return img_BAD; |
---|
1087 | } |
---|
1088 | } |
---|
1089 | } |
---|
1090 | } |
---|
1091 | |
---|
1092 | static int |
---|
1093 | write_v3label(img *pimg, int opt, const char *s) |
---|
1094 | { |
---|
1095 | size_t len, n, dot; |
---|
1096 | |
---|
1097 | /* find length of common prefix */ |
---|
1098 | dot = 0; |
---|
1099 | for (len = 0; s[len] == pimg->label_buf[len] && s[len] != '\0'; len++) { |
---|
1100 | if (s[len] == '.') dot = len + 1; |
---|
1101 | } |
---|
1102 | |
---|
1103 | ASSERT(len <= pimg->label_len); |
---|
1104 | n = pimg->label_len - len; |
---|
1105 | if (len == 0) { |
---|
1106 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1107 | } else if (n <= 16) { |
---|
1108 | if (n) putc(n + 15, pimg->fh); |
---|
1109 | } else if (dot == 0) { |
---|
1110 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1111 | len = 0; |
---|
1112 | } else { |
---|
1113 | const char *p = pimg->label_buf + dot; |
---|
1114 | n = 1; |
---|
1115 | for (len = pimg->label_len - dot - 17; len; len--) { |
---|
1116 | if (*p++ == '.') n++; |
---|
1117 | } |
---|
1118 | if (n <= 14) { |
---|
1119 | putc(n, pimg->fh); |
---|
1120 | len = dot; |
---|
1121 | } else { |
---|
1122 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1123 | len = 0; |
---|
1124 | } |
---|
1125 | } |
---|
1126 | |
---|
1127 | n = strlen(s + len); |
---|
1128 | putc(opt, pimg->fh); |
---|
1129 | if (n < 0xfe) { |
---|
1130 | putc(n, pimg->fh); |
---|
1131 | } else if (n < 0xffff + 0xfe) { |
---|
1132 | putc(0xfe, pimg->fh); |
---|
1133 | put16(n - 0xfe, pimg->fh); |
---|
1134 | } else { |
---|
1135 | putc(0xff, pimg->fh); |
---|
1136 | put32(n, pimg->fh); |
---|
1137 | } |
---|
1138 | fwrite(s + len, n, 1, pimg->fh); |
---|
1139 | |
---|
1140 | n += len; |
---|
1141 | pimg->label_len = n; |
---|
1142 | if (!check_label_space(pimg, n + 1)) |
---|
1143 | return 0; /* FIXME: distinguish out of memory... */ |
---|
1144 | memcpy(pimg->label_buf + len, s + len, n - len + 1); |
---|
1145 | |
---|
1146 | return !ferror(pimg->fh); |
---|
1147 | } |
---|
1148 | |
---|
1149 | void |
---|
1150 | img_write_item(img *pimg, int code, int flags, const char *s, |
---|
1151 | double x, double y, double z) |
---|
1152 | { |
---|
1153 | if (!pimg) return; |
---|
1154 | if (pimg->version == 3) { |
---|
1155 | int opt = 0; |
---|
1156 | switch (code) { |
---|
1157 | case img_LABEL: |
---|
1158 | write_v3label(pimg, 0x40 | flags, s); |
---|
1159 | opt = 0; |
---|
1160 | break; |
---|
1161 | case img_MOVE: |
---|
1162 | opt = 15; |
---|
1163 | break; |
---|
1164 | case img_LINE: |
---|
1165 | write_v3label(pimg, 0x80 | flags, s ? s : ""); |
---|
1166 | opt = 0; |
---|
1167 | break; |
---|
1168 | default: /* ignore for now */ |
---|
1169 | return; |
---|
1170 | } |
---|
1171 | if (opt) putc(opt, pimg->fh); |
---|
1172 | /* Output in cm */ |
---|
1173 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
1174 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
1175 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
1176 | } else { |
---|
1177 | size_t len; |
---|
1178 | INT32_T opt = 0; |
---|
1179 | ASSERT(pimg->version > 0); |
---|
1180 | switch (code) { |
---|
1181 | case img_LABEL: |
---|
1182 | if (pimg->version == 1) { |
---|
1183 | /* put a move before each label */ |
---|
1184 | img_write_item(pimg, img_MOVE, 0, NULL, x, y, z); |
---|
1185 | put32(2, pimg->fh); |
---|
1186 | fputsnl(s, pimg->fh); |
---|
1187 | return; |
---|
1188 | } |
---|
1189 | len = strlen(s); |
---|
1190 | if (len > 255 || strchr(s, '\n')) { |
---|
1191 | /* long label - not in early incarnations of v2 format, but few |
---|
1192 | * 3d files will need these, so better not to force incompatibility |
---|
1193 | * with a new version I think... */ |
---|
1194 | putc(7, pimg->fh); |
---|
1195 | putc(flags, pimg->fh); |
---|
1196 | put32(len, pimg->fh); |
---|
1197 | fputs(s, pimg->fh); |
---|
1198 | } else { |
---|
1199 | putc(0x40 | (flags & 0x3f), pimg->fh); |
---|
1200 | fputsnl(s, pimg->fh); |
---|
1201 | } |
---|
1202 | opt = 0; |
---|
1203 | break; |
---|
1204 | case img_MOVE: |
---|
1205 | opt = 4; |
---|
1206 | break; |
---|
1207 | case img_LINE: |
---|
1208 | if (pimg->version > 1) { |
---|
1209 | opt = 0x80 | (flags & 0x3f); |
---|
1210 | break; |
---|
1211 | } |
---|
1212 | opt = 5; |
---|
1213 | break; |
---|
1214 | default: /* ignore for now */ |
---|
1215 | return; |
---|
1216 | } |
---|
1217 | if (pimg->version == 1) { |
---|
1218 | put32(opt, pimg->fh); |
---|
1219 | } else { |
---|
1220 | if (opt) putc(opt, pimg->fh); |
---|
1221 | } |
---|
1222 | /* Output in cm */ |
---|
1223 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
1224 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
1225 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
1226 | } |
---|
1227 | } |
---|
1228 | |
---|
1229 | int |
---|
1230 | img_close(img *pimg) |
---|
1231 | { |
---|
1232 | int result = 1; |
---|
1233 | if (pimg) { |
---|
1234 | if (pimg->fh) { |
---|
1235 | if (pimg->fRead) { |
---|
1236 | osfree(pimg->survey); |
---|
1237 | osfree(pimg->title); |
---|
1238 | osfree(pimg->datestamp); |
---|
1239 | } else { |
---|
1240 | /* write end of data marker */ |
---|
1241 | switch (pimg->version) { |
---|
1242 | case 1: |
---|
1243 | put32((INT32_T)-1, pimg->fh); |
---|
1244 | break; |
---|
1245 | case 2: |
---|
1246 | putc(0, pimg->fh); |
---|
1247 | break; |
---|
1248 | case 3: |
---|
1249 | if (pimg->label_len) putc(0, pimg->fh); |
---|
1250 | putc(0, pimg->fh); |
---|
1251 | break; |
---|
1252 | } |
---|
1253 | } |
---|
1254 | if (ferror(pimg->fh)) result = 0; |
---|
1255 | if (fclose(pimg->fh)) result = 0; |
---|
1256 | if (!result) img_errno = pimg->fRead ? IMG_READERROR : IMG_WRITEERROR; |
---|
1257 | } |
---|
1258 | osfree(pimg->label_buf); |
---|
1259 | osfree(pimg); |
---|
1260 | } |
---|
1261 | return result; |
---|
1262 | } |
---|