[0da6e60] | 1 | /* img.c |
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[d1b1380] | 2 | * Routines for reading and writing Survex ".3d" image files |
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[ff0b3b0] | 3 | * Copyright (C) 1993-2003 Olly Betts |
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[846746e] | 4 | * |
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[89231c4] | 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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[846746e] | 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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[89231c4] | 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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[846746e] | 14 | * |
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[89231c4] | 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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[d1b1380] | 18 | */ |
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| 19 | |
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[a420b49] | 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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[d1b1380] | 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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[72af530] | 30 | #include "img.h" |
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[7d27e36] | 31 | |
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[72af530] | 32 | #ifdef IMG_HOSTED |
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[d69255f] | 33 | # include "debug.h" |
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[d1b1380] | 34 | # include "filelist.h" |
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[d69255f] | 35 | # include "filename.h" |
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| 36 | # include "message.h" |
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| 37 | # include "useful.h" |
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[a420b49] | 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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[d1b1380] | 40 | #else |
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[72af530] | 41 | # define INT32_T long |
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[d1b1380] | 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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[964f58a] | 45 | # define EXT_SVX_POS "pos" |
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| 46 | # define FNM_SEP_EXT '.' |
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| 47 | # define METRES_PER_FOOT 0.3048 /* exact value */ |
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[d1b1380] | 48 | # define xosmalloc(L) malloc((L)) |
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[72af530] | 49 | # define xosrealloc(L,S) realloc((L),(S)) |
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[d1b1380] | 50 | # define osfree(P) free((P)) |
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| 51 | # define ossizeof(T) sizeof(T) |
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[72af530] | 52 | /* in IMG_HOSTED mode, this tests if a filename refers to a directory */ |
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[d1b1380] | 53 | # define fDirectory(X) 0 |
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| 54 | /* open file FNM with mode MODE, maybe using path PTH and/or extension EXT */ |
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| 55 | /* path isn't used in img.c, but EXT is */ |
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| 56 | # define fopenWithPthAndExt(PTH,FNM,EXT,MODE,X) fopen(FNM,MODE) |
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| 57 | # define fFalse 0 |
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| 58 | # define fTrue 1 |
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| 59 | # define bool int |
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| 60 | /* dummy do {...} while(0) hack to permit stuff like |
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| 61 | * if (s) fputsnl(s,fh); else exit(1); |
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| 62 | * to work as intended |
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| 63 | */ |
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[23f7ea7] | 64 | # define fputsnl(S, FH) do {fputs((S), (FH)); putc('\n', (FH));} while(0) |
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[4c07c51] | 65 | # define SVX_ASSERT(X) |
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[d1b1380] | 66 | |
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[a420b49] | 67 | static long |
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| 68 | get32(FILE *fh) |
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| 69 | { |
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[ad9a5cd] | 70 | long w = getc(fh); |
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[a420b49] | 71 | w |= (long)getc(fh) << 8l; |
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| 72 | w |= (long)getc(fh) << 16l; |
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| 73 | w |= (long)getc(fh) << 24l; |
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| 74 | return w; |
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[d1b1380] | 75 | } |
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| 76 | |
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[a420b49] | 77 | static void |
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| 78 | put32(long w, FILE *fh) |
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| 79 | { |
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| 80 | putc((char)(w), fh); |
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| 81 | putc((char)(w >> 8l), fh); |
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| 82 | putc((char)(w >> 16l), fh); |
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| 83 | putc((char)(w >> 24l), fh); |
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[d1b1380] | 84 | } |
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[5c3c61a] | 85 | |
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[964f58a] | 86 | static short |
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| 87 | get16(FILE *fh) |
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| 88 | { |
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| 89 | short w = getc(fh); |
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| 90 | w |= (long)getc(fh) << 8l; |
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| 91 | return w; |
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| 92 | } |
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| 93 | |
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| 94 | static void |
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| 95 | put16(short w, FILE *fh) |
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| 96 | { |
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| 97 | putc((char)(w), fh); |
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| 98 | putc((char)(w >> 8l), fh); |
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| 99 | } |
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| 100 | |
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| 101 | static char * |
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| 102 | baseleaf_from_fnm(const char *fnm) |
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| 103 | { |
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| 104 | const char *p; |
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| 105 | char *q; |
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| 106 | size_t len; |
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| 107 | |
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| 108 | p = fnm; |
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| 109 | q = strrchr(p, '/'); |
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| 110 | if (q) p = q + 1; |
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| 111 | q = strrchr(p, '\\'); |
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| 112 | if (q) p = q + 1; |
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| 113 | |
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| 114 | q = strrchr(p, FNM_SEP_EXT); |
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| 115 | if (q) len = (const char *)q - p; else len = strlen(p); |
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| 116 | |
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| 117 | q = xosmalloc(len + 1); |
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| 118 | if (!q) return NULL; |
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| 119 | memcpy(q, p, len); |
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| 120 | q[len] = '\0'; |
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| 121 | return q; |
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| 122 | } |
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[5c3c61a] | 123 | #endif |
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| 124 | |
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[964f58a] | 125 | #include <math.h> |
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[dd1d6369] | 126 | #ifdef HAVE_ROUND |
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| 127 | extern double round(double); /* prototype is often missing... */ |
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| 128 | # define my_round round |
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| 129 | #else |
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| 130 | static double |
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| 131 | my_round(double x) { |
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| 132 | if (x >= 0.0) return floor(x + 0.5); |
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| 133 | return ceil(x - 0.5); |
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| 134 | } |
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| 135 | #endif |
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| 136 | |
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[ad4eaf3f] | 137 | /* portable case insensitive string compare */ |
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| 138 | #if defined(strcasecmp) || defined(HAVE_STRCASECMP) |
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| 139 | # define my_strcasecmp strcasecmp |
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| 140 | #else |
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| 141 | /* What about top bit set chars? */ |
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| 142 | int my_strcasecmp(const char *s1, const char *s2) { |
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[964f58a] | 143 | register int c1, c2; |
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[ad4eaf3f] | 144 | do { |
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| 145 | c1 = *s1++; |
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| 146 | c2 = *s2++; |
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| 147 | } while (c1 && toupper(c1) == toupper(c2)); |
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| 148 | /* now calculate real difference */ |
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| 149 | return c1 - c2; |
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| 150 | } |
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| 151 | #endif |
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| 152 | |
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[d69255f] | 153 | unsigned int img_output_version = 3; |
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[5c3c61a] | 154 | |
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[72af530] | 155 | #ifdef IMG_HOSTED |
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[5c3c61a] | 156 | static enum { |
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| 157 | IMG_NONE = 0, |
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[759fb47] | 158 | IMG_FILENOTFOUND = /*Couldn't open data file `%s'*/24, |
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[5c3c61a] | 159 | IMG_OUTOFMEMORY = /*Out of memory %.0s*/38, |
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[759fb47] | 160 | IMG_DIRECTORY = /*Filename `%s' refers to directory*/44, |
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| 161 | IMG_CANTOPENOUT = /*Failed to open output file `%s'*/47, |
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[ad9a5cd] | 162 | IMG_BADFORMAT = /*Bad 3d image file `%s'*/106, |
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| 163 | IMG_READERROR = /*Error reading from file `%s'*/109, |
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[6c1c4f3] | 164 | IMG_WRITEERROR = /*Error writing to file `%s'*/110, |
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| 165 | IMG_TOONEW = /*File `%s' has a newer format than this program can understand*/114 |
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[5c3c61a] | 166 | } img_errno = IMG_NONE; |
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| 167 | #else |
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| 168 | static img_errcode img_errno = IMG_NONE; |
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[c0563da] | 169 | #endif |
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[d1b1380] | 170 | |
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[7d27e36] | 171 | #define FILEID "Survex 3D Image File" |
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| 172 | |
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[ad4eaf3f] | 173 | #define EXT_PLT "plt" |
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[d16db18] | 174 | #define EXT_PLF "plf" |
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[f1c7c9c7] | 175 | #define EXT_XYZ "xyz" |
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[ad4eaf3f] | 176 | |
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[0da6e60] | 177 | /* Attempt to string paste to ensure we are passed a literal string */ |
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| 178 | #define LITLEN(S) (sizeof(S"") - 1) |
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| 179 | |
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[7d27e36] | 180 | static char * |
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| 181 | my_strdup(const char *str) |
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[a420b49] | 182 | { |
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[7d27e36] | 183 | char *p; |
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| 184 | size_t len = strlen(str) + 1; |
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| 185 | p = xosmalloc(len); |
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| 186 | if (p) memcpy(p, str, len); |
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| 187 | return p; |
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[d1b1380] | 188 | } |
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[c0563da] | 189 | |
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[a2ad284] | 190 | static char * |
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| 191 | getline_alloc(FILE *fh) |
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| 192 | { |
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| 193 | int ch; |
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| 194 | size_t i = 0; |
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| 195 | size_t len = 16; |
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| 196 | char *buf = xosmalloc(len); |
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| 197 | if (!buf) return NULL; |
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| 198 | |
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| 199 | ch = getc(fh); |
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| 200 | while (ch != '\n' && ch != '\r' && ch != EOF) { |
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| 201 | buf[i++] = ch; |
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| 202 | if (i == len - 1) { |
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| 203 | char *p; |
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| 204 | len += len; |
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| 205 | p = xosrealloc(buf, len); |
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| 206 | if (!p) { |
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| 207 | osfree(buf); |
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| 208 | return NULL; |
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| 209 | } |
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| 210 | buf = p; |
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| 211 | } |
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| 212 | ch = getc(fh); |
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| 213 | } |
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| 214 | if (ch == '\n' || ch == '\r') { |
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[4ebc557] | 215 | int otherone = ch ^ ('\n' ^ '\r'); |
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| 216 | ch = getc(fh); |
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| 217 | /* if it's not the other eol character, put it back */ |
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| 218 | if (ch != otherone) ungetc(ch, fh); |
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[a2ad284] | 219 | } |
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[421b7d2] | 220 | buf[i++] = '\0'; |
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[a2ad284] | 221 | return buf; |
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| 222 | } |
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| 223 | |
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[72af530] | 224 | #ifndef IMG_HOSTED |
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[a420b49] | 225 | img_errcode |
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| 226 | img_error(void) |
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| 227 | { |
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| 228 | return img_errno; |
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[d1b1380] | 229 | } |
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| 230 | #else |
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[a420b49] | 231 | int |
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| 232 | img_error(void) |
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| 233 | { |
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| 234 | return (int)img_errno; |
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[d1b1380] | 235 | } |
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| 236 | #endif |
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| 237 | |
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[d4d3655] | 238 | static bool |
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| 239 | check_label_space(img *pimg, size_t len) |
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| 240 | { |
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| 241 | if (len > pimg->buf_len) { |
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| 242 | char *b = xosrealloc(pimg->label_buf, len); |
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| 243 | if (!b) return fFalse; |
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| 244 | pimg->label = (pimg->label - pimg->label_buf) + b; |
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| 245 | pimg->label_buf = b; |
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| 246 | pimg->buf_len = len; |
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| 247 | } |
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| 248 | return fTrue; |
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| 249 | } |
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| 250 | |
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[d16db18] | 251 | #define has_ext(F,L,E) ((L) > LITLEN(E) + 1 &&\ |
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| 252 | (F)[(L) - LITLEN(E) - 1] == FNM_SEP_EXT &&\ |
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| 253 | my_strcasecmp((F) + (L) - LITLEN(E), E) == 0) |
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| 254 | |
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[a420b49] | 255 | img * |
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[a2ad284] | 256 | img_open_survey(const char *fnm, const char *survey) |
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[a420b49] | 257 | { |
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| 258 | img *pimg; |
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[0da6e60] | 259 | size_t len; |
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[c5850207] | 260 | char buf[LITLEN(FILEID) + 9]; |
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[7d27e36] | 261 | int ch; |
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[a420b49] | 262 | |
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| 263 | if (fDirectory(fnm)) { |
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| 264 | img_errno = IMG_DIRECTORY; |
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| 265 | return NULL; |
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| 266 | } |
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[d1b1380] | 267 | |
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[a420b49] | 268 | pimg = (img *)xosmalloc(ossizeof(img)); |
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| 269 | if (pimg == NULL) { |
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| 270 | img_errno = IMG_OUTOFMEMORY; |
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| 271 | return NULL; |
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| 272 | } |
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[d1b1380] | 273 | |
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[23f7ea7] | 274 | pimg->buf_len = 257; |
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[0ff23cb] | 275 | pimg->label_buf = xosmalloc(pimg->buf_len); |
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| 276 | if (!pimg->label_buf) { |
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[23f7ea7] | 277 | osfree(pimg); |
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| 278 | img_errno = IMG_OUTOFMEMORY; |
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| 279 | return NULL; |
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| 280 | } |
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| 281 | |
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[a420b49] | 282 | pimg->fh = fopenWithPthAndExt("", fnm, EXT_SVX_3D, "rb", NULL); |
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| 283 | if (pimg->fh == NULL) { |
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[ce1e5ac] | 284 | osfree(pimg->label_buf); |
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[47e4a2e] | 285 | osfree(pimg); |
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[a420b49] | 286 | img_errno = IMG_FILENOTFOUND; |
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| 287 | return NULL; |
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| 288 | } |
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[d1b1380] | 289 | |
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[0da6e60] | 290 | pimg->fRead = fTrue; /* reading from this file */ |
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| 291 | img_errno = IMG_NONE; |
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| 292 | |
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| 293 | pimg->flags = 0; |
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| 294 | |
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| 295 | /* for version 3 we use label_buf to store the prefix for reuse */ |
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[4ebc557] | 296 | /* for version -2, 0 value indicates we haven't entered a survey yet */ |
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[f1c7c9c7] | 297 | /* for version -4, we store the last station here to detect whether |
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| 298 | * we MOVE or LINE */ |
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[0da6e60] | 299 | pimg->label_len = 0; |
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[f1c7c9c7] | 300 | pimg->label_buf[0] = '\0'; |
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[0da6e60] | 301 | |
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| 302 | pimg->survey = NULL; |
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| 303 | pimg->survey_len = 0; |
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[9f9c05e] | 304 | pimg->separator = '.'; |
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[0da6e60] | 305 | |
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[c637fad] | 306 | pimg->title = pimg->datestamp = NULL; |
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[0da6e60] | 307 | if (survey) { |
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| 308 | len = strlen(survey); |
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| 309 | if (len) { |
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| 310 | if (survey[len - 1] == '.') len--; |
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| 311 | if (len) { |
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| 312 | char *p; |
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[964f58a] | 313 | pimg->survey = xosmalloc(len + 2); |
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| 314 | if (!pimg->survey) { |
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| 315 | img_errno = IMG_OUTOFMEMORY; |
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| 316 | goto error; |
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| 317 | } |
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[0da6e60] | 318 | memcpy(pimg->survey, survey, len); |
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| 319 | /* Set title to leaf survey name */ |
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| 320 | pimg->survey[len] = '\0'; |
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| 321 | p = strchr(pimg->survey, '.'); |
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| 322 | if (p) p++; else p = pimg->survey; |
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[7d27e36] | 323 | pimg->title = my_strdup(p); |
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| 324 | if (!pimg->title) { |
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| 325 | img_errno = IMG_OUTOFMEMORY; |
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| 326 | goto error; |
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| 327 | } |
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[0da6e60] | 328 | pimg->survey[len] = '.'; |
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| 329 | pimg->survey[len + 1] = '\0'; |
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| 330 | } |
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| 331 | } |
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| 332 | pimg->survey_len = len; |
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| 333 | } |
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| 334 | |
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[f1c7c9c7] | 335 | /* [version -2, -3, -4] pending IMG_LINE or IMG_MOVE - both have 4 added |
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[ad4eaf3f] | 336 | * [version -1] already skipped heading line, or there wasn't one |
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[0da6e60] | 337 | * [version 0] not in the middle of a 'LINE' command |
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| 338 | * [version 3] not in the middle of turning a LINE into a MOVE |
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| 339 | */ |
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| 340 | pimg->pending = 0; |
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| 341 | |
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| 342 | len = strlen(fnm); |
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[d16db18] | 343 | if (has_ext(fnm, len, EXT_SVX_POS)) { |
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[f830e0d] | 344 | pos_file: |
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[0da6e60] | 345 | pimg->version = -1; |
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[984f49e] | 346 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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[7d27e36] | 347 | pimg->datestamp = my_strdup(TIMENA); |
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| 348 | if (!pimg->datestamp) { |
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| 349 | img_errno = IMG_OUTOFMEMORY; |
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| 350 | goto error; |
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| 351 | } |
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[58f02ae] | 352 | pimg->start = 0; |
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[0da6e60] | 353 | return pimg; |
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| 354 | } |
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[5757725] | 355 | |
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[d16db18] | 356 | if (has_ext(fnm, len, EXT_PLT) || has_ext(fnm, len, EXT_PLF)) { |
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[4ebc557] | 357 | long fpos; |
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[27bd06b] | 358 | plt_file: |
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[ad4eaf3f] | 359 | pimg->version = -2; |
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[9f9c05e] | 360 | /* Spaces aren't legal in Compass station names, but dots are, so |
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| 361 | * use space as the level separator */ |
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| 362 | pimg->separator = ' '; |
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[4ebc557] | 363 | pimg->start = 0; |
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[984f49e] | 364 | if (!pimg->survey) pimg->title = baseleaf_from_fnm(fnm); |
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[ad4eaf3f] | 365 | pimg->datestamp = my_strdup(TIMENA); |
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| 366 | if (!pimg->datestamp) { |
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| 367 | img_errno = IMG_OUTOFMEMORY; |
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| 368 | goto error; |
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| 369 | } |
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[4ebc557] | 370 | while (1) { |
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[2dfd768] | 371 | ch = getc(pimg->fh); |
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[4ebc557] | 372 | switch (ch) { |
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| 373 | case '\x1a': |
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| 374 | fseek(pimg->fh, -1, SEEK_CUR); |
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| 375 | /* FALL THRU */ |
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| 376 | case EOF: |
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| 377 | pimg->start = ftell(pimg->fh); |
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| 378 | return pimg; |
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| 379 | case 'N': { |
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| 380 | char *line, *q; |
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| 381 | fpos = ftell(pimg->fh) - 1; |
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| 382 | if (!pimg->survey) { |
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| 383 | /* FIXME : if there's only one survey in the file, it'd be nice |
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| 384 | * to use its description as the title here... |
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| 385 | */ |
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[0d922fc] | 386 | ungetc('N', pimg->fh); |
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[4ebc557] | 387 | pimg->start = fpos; |
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[984f49e] | 388 | return pimg; |
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| 389 | } |
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[4ebc557] | 390 | line = getline_alloc(pimg->fh); |
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[f1c7c9c7] | 391 | if (!line) { |
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| 392 | img_errno = IMG_OUTOFMEMORY; |
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| 393 | goto error; |
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| 394 | } |
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[0d922fc] | 395 | len = 0; |
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[4ebc557] | 396 | while (line[len] > 32) ++len; |
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| 397 | if (pimg->survey_len != len || |
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| 398 | memcmp(line, pimg->survey, len) != 0) { |
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[ad4eaf3f] | 399 | osfree(line); |
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[4ebc557] | 400 | continue; |
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[ad4eaf3f] | 401 | } |
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[4ebc557] | 402 | q = strchr(line + len, 'C'); |
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| 403 | if (q && q[1]) { |
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| 404 | osfree(pimg->title); |
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[f1c7c9c7] | 405 | pimg->title = my_strdup(q + 1); |
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[4ebc557] | 406 | } else if (!pimg->title) { |
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[f1c7c9c7] | 407 | pimg->title = my_strdup(pimg->label); |
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[4ebc557] | 408 | } |
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| 409 | osfree(line); |
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| 410 | if (!pimg->title) { |
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| 411 | img_errno = IMG_OUTOFMEMORY; |
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| 412 | goto error; |
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| 413 | } |
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| 414 | if (!pimg->start) pimg->start = fpos; |
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[27bd06b] | 415 | fseek(pimg->fh, pimg->start, SEEK_SET); |
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[4ebc557] | 416 | return pimg; |
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| 417 | } |
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| 418 | case 'M': case 'D': |
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| 419 | pimg->start = ftell(pimg->fh) - 1; |
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| 420 | break; |
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[984f49e] | 421 | } |
---|
[4ebc557] | 422 | while (ch != '\n' && ch != '\r') { |
---|
| 423 | ch = getc(pimg->fh); |
---|
[984f49e] | 424 | } |
---|
| 425 | } |
---|
[ad4eaf3f] | 426 | } |
---|
[0da6e60] | 427 | |
---|
[d16db18] | 428 | if (has_ext(fnm, len, EXT_XYZ)) { |
---|
[f1c7c9c7] | 429 | char *line; |
---|
| 430 | xyz_file: |
---|
[9f9c05e] | 431 | /* Spaces aren't legal in CMAP station names, but dots are, so |
---|
| 432 | * use space as the level separator */ |
---|
| 433 | pimg->separator = ' '; |
---|
[f1c7c9c7] | 434 | line = getline_alloc(pimg->fh); |
---|
| 435 | if (!line) { |
---|
| 436 | img_errno = IMG_OUTOFMEMORY; |
---|
| 437 | goto error; |
---|
| 438 | } |
---|
| 439 | /* FIXME: reparse date? */ |
---|
| 440 | len = strlen(line); |
---|
| 441 | if (len > 59) line[59] = '\0'; |
---|
| 442 | if (len > 45) { |
---|
| 443 | pimg->datestamp = my_strdup(line + 45); |
---|
| 444 | } else { |
---|
| 445 | pimg->datestamp = my_strdup(TIMENA); |
---|
| 446 | } |
---|
| 447 | if (strncmp(line, " Cave Survey Data Processed by CMAP ", |
---|
| 448 | LITLEN(" Cave Survey Data Processed by CMAP ")) == 0) { |
---|
| 449 | len = 0; |
---|
| 450 | } else { |
---|
| 451 | if (len > 45) { |
---|
| 452 | line[45] = '\0'; |
---|
| 453 | len = 45; |
---|
| 454 | } |
---|
| 455 | while (len > 2 && line[len - 1] == ' ') --len; |
---|
| 456 | if (len > 2) { |
---|
| 457 | line[len] = '\0'; |
---|
| 458 | pimg->title = my_strdup(line + 2); |
---|
| 459 | } |
---|
| 460 | } |
---|
| 461 | if (len <= 2) pimg->title = baseleaf_from_fnm(fnm); |
---|
| 462 | osfree(line); |
---|
| 463 | if (!pimg->datestamp || !pimg->title) { |
---|
| 464 | img_errno = IMG_OUTOFMEMORY; |
---|
| 465 | goto error; |
---|
| 466 | } |
---|
| 467 | line = getline_alloc(pimg->fh); |
---|
| 468 | if (!line) { |
---|
| 469 | img_errno = IMG_OUTOFMEMORY; |
---|
| 470 | goto error; |
---|
| 471 | } |
---|
| 472 | if (line[0] != ' ' || (line[1] != 'S' && line[1] != 'O')) { |
---|
| 473 | img_errno = IMG_BADFORMAT; |
---|
| 474 | goto error; |
---|
| 475 | } |
---|
| 476 | if (line[1] == 'S') { |
---|
| 477 | pimg->version = -3; /* Station format */ |
---|
| 478 | } else { |
---|
| 479 | pimg->version = -4; /* Shot format */ |
---|
| 480 | } |
---|
| 481 | osfree(line); |
---|
| 482 | line = getline_alloc(pimg->fh); |
---|
| 483 | if (!line) { |
---|
| 484 | img_errno = IMG_OUTOFMEMORY; |
---|
| 485 | goto error; |
---|
| 486 | } |
---|
| 487 | if (line[0] != ' ' || line[1] != '-') { |
---|
| 488 | img_errno = IMG_BADFORMAT; |
---|
| 489 | goto error; |
---|
| 490 | } |
---|
| 491 | osfree(line); |
---|
| 492 | pimg->start = ftell(pimg->fh); |
---|
| 493 | return pimg; |
---|
| 494 | } |
---|
| 495 | |
---|
[7d27e36] | 496 | if (fread(buf, LITLEN(FILEID) + 1, 1, pimg->fh) != 1 || |
---|
[d16db18] | 497 | memcmp(buf, FILEID"\n", LITLEN(FILEID) + 1) != 0) { |
---|
[c5850207] | 498 | if (fread(buf + LITLEN(FILEID) + 1, 8, 1, pimg->fh) == 1 && |
---|
| 499 | memcmp(buf, FILEID"\r\nv0.01\r\n", LITLEN(FILEID) + 9) == 0) { |
---|
| 500 | /* v0 3d file with DOS EOLs */ |
---|
| 501 | pimg->version = 0; |
---|
| 502 | goto v03d; |
---|
| 503 | } |
---|
[d16db18] | 504 | rewind(pimg->fh); |
---|
[f1c7c9c7] | 505 | if (buf[1] == ' ') { |
---|
| 506 | if (buf[0] == ' ') { |
---|
| 507 | /* Looks like a CMAP .xyz file ... */ |
---|
| 508 | goto xyz_file; |
---|
| 509 | } else if (strchr("ZSNF", buf[0])) { |
---|
| 510 | /* Looks like a Compass .plt file ... */ |
---|
| 511 | /* Almost certainly it'll start "Z " */ |
---|
| 512 | goto plt_file; |
---|
| 513 | } |
---|
[27bd06b] | 514 | } |
---|
[f830e0d] | 515 | if (buf[0] == '(') { |
---|
| 516 | /* Looks like a Survex .pos file ... */ |
---|
| 517 | goto pos_file; |
---|
| 518 | } |
---|
[a420b49] | 519 | img_errno = IMG_BADFORMAT; |
---|
[58f02ae] | 520 | goto error; |
---|
[a420b49] | 521 | } |
---|
[d1b1380] | 522 | |
---|
[7d27e36] | 523 | /* check file format version */ |
---|
| 524 | ch = getc(pimg->fh); |
---|
| 525 | pimg->version = 0; |
---|
| 526 | if (tolower(ch) == 'b') { |
---|
| 527 | /* binary file iff B/b prefix */ |
---|
| 528 | pimg->version = 1; |
---|
| 529 | ch = getc(pimg->fh); |
---|
| 530 | } |
---|
| 531 | if (ch != 'v') { |
---|
| 532 | img_errno = IMG_BADFORMAT; |
---|
| 533 | goto error; |
---|
| 534 | } |
---|
| 535 | ch = getc(pimg->fh); |
---|
| 536 | if (ch == '0') { |
---|
| 537 | if (fread(buf, 4, 1, pimg->fh) != 1 || memcmp(buf, ".01\n", 4) != 0) { |
---|
| 538 | img_errno = IMG_BADFORMAT; |
---|
| 539 | goto error; |
---|
| 540 | } |
---|
[0da6e60] | 541 | /* nothing special to do */ |
---|
[7d27e36] | 542 | } else if (pimg->version == 0) { |
---|
| 543 | if (ch < '2' || ch > '3' || getc(pimg->fh) != '\n') { |
---|
[6c1c4f3] | 544 | img_errno = IMG_TOONEW; |
---|
[58f02ae] | 545 | goto error; |
---|
[6c1c4f3] | 546 | } |
---|
[7d27e36] | 547 | pimg->version = ch - '0'; |
---|
[5c3c61a] | 548 | } else { |
---|
[647407d] | 549 | img_errno = IMG_BADFORMAT; |
---|
[58f02ae] | 550 | goto error; |
---|
[a420b49] | 551 | } |
---|
[421b7d2] | 552 | |
---|
[c5850207] | 553 | v03d: |
---|
[4d3dfdf] | 554 | if (!pimg->title) |
---|
| 555 | pimg->title = getline_alloc(pimg->fh); |
---|
| 556 | else |
---|
| 557 | osfree(getline_alloc(pimg->fh)); |
---|
[a2ad284] | 558 | pimg->datestamp = getline_alloc(pimg->fh); |
---|
| 559 | if (!pimg->title || !pimg->datestamp) { |
---|
[58f02ae] | 560 | img_errno = IMG_OUTOFMEMORY; |
---|
| 561 | error: |
---|
[a2ad284] | 562 | osfree(pimg->title); |
---|
[984f49e] | 563 | osfree(pimg->datestamp); |
---|
[a2ad284] | 564 | fclose(pimg->fh); |
---|
| 565 | osfree(pimg); |
---|
| 566 | return NULL; |
---|
| 567 | } |
---|
| 568 | |
---|
[58f02ae] | 569 | pimg->start = ftell(pimg->fh); |
---|
[421b7d2] | 570 | |
---|
[a420b49] | 571 | return pimg; |
---|
[d1b1380] | 572 | } |
---|
| 573 | |
---|
[9f3e5df] | 574 | int |
---|
[f2588ca] | 575 | img_rewind(img *pimg) |
---|
| 576 | { |
---|
[9f3e5df] | 577 | if (!pimg->fRead) { |
---|
| 578 | img_errno = IMG_WRITEERROR; |
---|
| 579 | return 0; |
---|
| 580 | } |
---|
| 581 | if (fseek(pimg->fh, pimg->start, SEEK_SET) != 0) { |
---|
| 582 | img_errno = IMG_READERROR; |
---|
| 583 | return 0; |
---|
| 584 | } |
---|
[58f02ae] | 585 | clearerr(pimg->fh); |
---|
| 586 | /* [version -1] already skipped heading line, or there wasn't one |
---|
| 587 | * [version 0] not in the middle of a 'LINE' command |
---|
[76bbb7c9] | 588 | * [version 3] not in the middle of turning a LINE into a MOVE */ |
---|
[4ebc557] | 589 | pimg->pending = 0; |
---|
[d69255f] | 590 | |
---|
| 591 | img_errno = IMG_NONE; |
---|
[99cf51a] | 592 | |
---|
[5d7280f8] | 593 | /* for version 3 we use label_buf to store the prefix for reuse */ |
---|
[4ebc557] | 594 | /* for version -2, 0 value indicates we haven't entered a survey yet */ |
---|
[f1c7c9c7] | 595 | /* for version -4, we store the last station here to detect whether |
---|
| 596 | * we MOVE or LINE */ |
---|
[d69255f] | 597 | pimg->label_len = 0; |
---|
[9f3e5df] | 598 | return 1; |
---|
[f2588ca] | 599 | } |
---|
| 600 | |
---|
[a420b49] | 601 | img * |
---|
[fe8e80e] | 602 | img_open_write(const char *fnm, char *title_buf, bool fBinary) |
---|
[a420b49] | 603 | { |
---|
| 604 | time_t tm; |
---|
| 605 | img *pimg; |
---|
[d1b1380] | 606 | |
---|
[d69255f] | 607 | fBinary = fBinary; |
---|
| 608 | |
---|
[a420b49] | 609 | if (fDirectory(fnm)) { |
---|
| 610 | img_errno = IMG_DIRECTORY; |
---|
| 611 | return NULL; |
---|
| 612 | } |
---|
[d1b1380] | 613 | |
---|
[a420b49] | 614 | pimg = (img *)xosmalloc(ossizeof(img)); |
---|
| 615 | if (pimg == NULL) { |
---|
| 616 | img_errno = IMG_OUTOFMEMORY; |
---|
| 617 | return NULL; |
---|
| 618 | } |
---|
[d1b1380] | 619 | |
---|
[fe8e80e] | 620 | pimg->buf_len = 257; |
---|
[0ff23cb] | 621 | pimg->label_buf = xosmalloc(pimg->buf_len); |
---|
| 622 | if (!pimg->label_buf) { |
---|
[fe8e80e] | 623 | osfree(pimg); |
---|
| 624 | img_errno = IMG_OUTOFMEMORY; |
---|
| 625 | return NULL; |
---|
| 626 | } |
---|
| 627 | |
---|
[a420b49] | 628 | pimg->fh = fopen(fnm, "wb"); |
---|
| 629 | if (!pimg->fh) { |
---|
[ce1e5ac] | 630 | osfree(pimg->label_buf); |
---|
[47e4a2e] | 631 | osfree(pimg); |
---|
[a420b49] | 632 | img_errno = IMG_CANTOPENOUT; |
---|
| 633 | return NULL; |
---|
| 634 | } |
---|
[d1b1380] | 635 | |
---|
[a420b49] | 636 | /* Output image file header */ |
---|
| 637 | fputs("Survex 3D Image File\n", pimg->fh); /* file identifier string */ |
---|
[5c3c61a] | 638 | if (img_output_version < 2) { |
---|
[d69255f] | 639 | pimg->version = 1; |
---|
| 640 | fputs("Bv0.01\n", pimg->fh); /* binary file format version number */ |
---|
[5c3c61a] | 641 | } else { |
---|
[d69255f] | 642 | pimg->version = (img_output_version > 2) ? 3 : 2; |
---|
[5c3c61a] | 643 | fprintf(pimg->fh, "v%d\n", pimg->version); /* file format version no. */ |
---|
| 644 | } |
---|
[fe8e80e] | 645 | fputsnl(title_buf, pimg->fh); |
---|
[a420b49] | 646 | tm = time(NULL); |
---|
| 647 | if (tm == (time_t)-1) { |
---|
| 648 | fputsnl(TIMENA, pimg->fh); |
---|
| 649 | } else { |
---|
[7d27e36] | 650 | char date[256]; |
---|
[a420b49] | 651 | /* output current date and time in format specified */ |
---|
[7d27e36] | 652 | strftime(date, 256, TIMEFMT, localtime(&tm)); |
---|
| 653 | fputsnl(date, pimg->fh); |
---|
[a420b49] | 654 | } |
---|
| 655 | pimg->fRead = fFalse; /* writing to this file */ |
---|
| 656 | img_errno = IMG_NONE; |
---|
[d69255f] | 657 | |
---|
[5d7280f8] | 658 | /* for version 3 we use label_buf to store the prefix for reuse */ |
---|
[0ff23cb] | 659 | pimg->label_buf[0] = '\0'; |
---|
[d69255f] | 660 | pimg->label_len = 0; |
---|
| 661 | |
---|
[ad9a5cd] | 662 | /* Don't check for write errors now - let img_close() report them... */ |
---|
[a420b49] | 663 | return pimg; |
---|
[d1b1380] | 664 | } |
---|
| 665 | |
---|
[f1c7c9c7] | 666 | static void |
---|
| 667 | read_xyz_station_coords(img_point *pt, const char *line) |
---|
| 668 | { |
---|
| 669 | char num[12]; |
---|
| 670 | memcpy(num, line + 6, 9); |
---|
| 671 | num[9] = '\0'; |
---|
| 672 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
| 673 | memcpy(num, line + 15, 9); |
---|
| 674 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
| 675 | memcpy(num, line + 24, 8); |
---|
| 676 | num[8] = '\0'; |
---|
| 677 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
| 678 | } |
---|
| 679 | |
---|
| 680 | static void |
---|
| 681 | read_xyz_shot_coords(img_point *pt, const char *line) |
---|
| 682 | { |
---|
| 683 | char num[12]; |
---|
| 684 | memcpy(num, line + 40, 10); |
---|
| 685 | num[10] = '\0'; |
---|
| 686 | pt->x = atof(num) / METRES_PER_FOOT; |
---|
| 687 | memcpy(num, line + 50, 10); |
---|
| 688 | pt->y = atof(num) / METRES_PER_FOOT; |
---|
| 689 | memcpy(num, line + 60, 9); |
---|
| 690 | num[9] = '\0'; |
---|
| 691 | pt->z = atof(num) / METRES_PER_FOOT; |
---|
| 692 | } |
---|
| 693 | |
---|
| 694 | static void |
---|
| 695 | subtract_xyz_shot_deltas(img_point *pt, const char *line) |
---|
| 696 | { |
---|
| 697 | char num[12]; |
---|
| 698 | memcpy(num, line + 15, 9); |
---|
| 699 | num[9] = '\0'; |
---|
| 700 | pt->x -= atof(num) / METRES_PER_FOOT; |
---|
| 701 | memcpy(num, line + 24, 8); |
---|
| 702 | num[8] = '\0'; |
---|
| 703 | pt->y -= atof(num) / METRES_PER_FOOT; |
---|
| 704 | memcpy(num, line + 32, 8); |
---|
| 705 | pt->z -= atof(num) / METRES_PER_FOOT; |
---|
| 706 | } |
---|
| 707 | |
---|
[ad9a5cd] | 708 | static int |
---|
| 709 | read_coord(FILE *fh, img_point *pt) |
---|
| 710 | { |
---|
[4c07c51] | 711 | SVX_ASSERT(fh); |
---|
| 712 | SVX_ASSERT(pt); |
---|
[ad9a5cd] | 713 | pt->x = get32(fh) / 100.0; |
---|
| 714 | pt->y = get32(fh) / 100.0; |
---|
| 715 | pt->z = get32(fh) / 100.0; |
---|
| 716 | if (ferror(fh) || feof(fh)) { |
---|
| 717 | img_errno = feof(fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
| 718 | return 0; |
---|
[421b7d2] | 719 | } |
---|
[ad9a5cd] | 720 | return 1; |
---|
| 721 | } |
---|
| 722 | |
---|
[4d3dfdf] | 723 | static int |
---|
| 724 | skip_coord(FILE *fh) |
---|
| 725 | { |
---|
| 726 | return (fseek(fh, 12, SEEK_CUR) == 0); |
---|
| 727 | } |
---|
| 728 | |
---|
[a420b49] | 729 | int |
---|
[23f7ea7] | 730 | img_read_item(img *pimg, img_point *p) |
---|
[a420b49] | 731 | { |
---|
| 732 | int result; |
---|
[95c3272] | 733 | pimg->flags = 0; |
---|
[d69255f] | 734 | |
---|
| 735 | if (pimg->version == 3) { |
---|
| 736 | int opt; |
---|
[76bbb7c9] | 737 | if (pimg->pending >= 0x80) { |
---|
| 738 | *p = pimg->mv; |
---|
| 739 | pimg->flags = (int)(pimg->pending) & 0x3f; |
---|
| 740 | pimg->pending = 0; |
---|
[421b7d2] | 741 | return img_LINE; |
---|
[76bbb7c9] | 742 | } |
---|
[d69255f] | 743 | again3: /* label to goto if we get a prefix */ |
---|
[4d3dfdf] | 744 | pimg->label = pimg->label_buf; |
---|
[d69255f] | 745 | opt = getc(pimg->fh); |
---|
[ad9a5cd] | 746 | if (opt == EOF) { |
---|
| 747 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
| 748 | return img_BAD; |
---|
| 749 | } |
---|
[d69255f] | 750 | switch (opt >> 6) { |
---|
| 751 | case 0: |
---|
| 752 | if (opt == 0) { |
---|
| 753 | if (!pimg->label_len) return img_STOP; /* end of data marker */ |
---|
| 754 | pimg->label_len = 0; |
---|
| 755 | goto again3; |
---|
| 756 | } |
---|
| 757 | if (opt < 15) { |
---|
| 758 | /* 1-14 mean trim that many levels from current prefix */ |
---|
| 759 | int c; |
---|
| 760 | if (pimg->label_len <= 16) { |
---|
[4d3dfdf] | 761 | /* zero prefix using "0" */ |
---|
[d69255f] | 762 | img_errno = IMG_BADFORMAT; |
---|
| 763 | return img_BAD; |
---|
| 764 | } |
---|
[4b156b3] | 765 | c = pimg->label_len - 16 - 1; |
---|
[0ff23cb] | 766 | while (pimg->label_buf[c] != '.' || --opt > 0) { |
---|
[d69255f] | 767 | if (--c < 0) { |
---|
| 768 | /* zero prefix using "0" */ |
---|
| 769 | img_errno = IMG_BADFORMAT; |
---|
| 770 | return img_BAD; |
---|
| 771 | } |
---|
| 772 | } |
---|
| 773 | c++; |
---|
| 774 | pimg->label_len = c; |
---|
| 775 | goto again3; |
---|
| 776 | } |
---|
| 777 | if (opt == 15) { |
---|
| 778 | result = img_MOVE; |
---|
| 779 | break; |
---|
| 780 | } |
---|
| 781 | /* 16-31 mean remove (n - 15) characters from the prefix */ |
---|
| 782 | /* zero prefix using 0 */ |
---|
[ad4eaf3f] | 783 | if (pimg->label_len <= (size_t)(opt - 15)) { |
---|
[d69255f] | 784 | img_errno = IMG_BADFORMAT; |
---|
| 785 | return img_BAD; |
---|
| 786 | } |
---|
[d245d71] | 787 | pimg->label_len -= (opt - 15); |
---|
[d69255f] | 788 | goto again3; |
---|
| 789 | case 1: case 2: { |
---|
| 790 | char *q; |
---|
[ad9a5cd] | 791 | long len = getc(pimg->fh); |
---|
| 792 | if (len == EOF) { |
---|
| 793 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
| 794 | return img_BAD; |
---|
| 795 | } |
---|
[d69255f] | 796 | if (len == 0xfe) { |
---|
| 797 | len += get16(pimg->fh); |
---|
[ad9a5cd] | 798 | if (feof(pimg->fh)) { |
---|
| 799 | img_errno = IMG_BADFORMAT; |
---|
| 800 | return img_BAD; |
---|
| 801 | } |
---|
| 802 | if (ferror(pimg->fh)) { |
---|
| 803 | img_errno = IMG_READERROR; |
---|
| 804 | return img_BAD; |
---|
| 805 | } |
---|
[d69255f] | 806 | } else if (len == 0xff) { |
---|
| 807 | len = get32(pimg->fh); |
---|
[ad9a5cd] | 808 | if (ferror(pimg->fh)) { |
---|
| 809 | img_errno = IMG_READERROR; |
---|
| 810 | return img_BAD; |
---|
| 811 | } |
---|
| 812 | if (feof(pimg->fh) || len < 0xfe + 0xffff) { |
---|
[d69255f] | 813 | img_errno = IMG_BADFORMAT; |
---|
| 814 | return img_BAD; |
---|
| 815 | } |
---|
| 816 | } |
---|
| 817 | |
---|
[6dd3a20] | 818 | if (!check_label_space(pimg, pimg->label_len + len + 1)) { |
---|
[d4d3655] | 819 | img_errno = IMG_OUTOFMEMORY; |
---|
| 820 | return img_BAD; |
---|
[d69255f] | 821 | } |
---|
[d4d3655] | 822 | q = pimg->label_buf + pimg->label_len; |
---|
[6dd3a20] | 823 | pimg->label_len += len; |
---|
[d69255f] | 824 | if (len && fread(q, len, 1, pimg->fh) != 1) { |
---|
[ad9a5cd] | 825 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
[d69255f] | 826 | return img_BAD; |
---|
| 827 | } |
---|
| 828 | q[len] = '\0'; |
---|
[76bbb7c9] | 829 | |
---|
| 830 | result = opt & 0x40 ? img_LABEL : img_LINE; |
---|
| 831 | |
---|
| 832 | if (pimg->survey_len) { |
---|
| 833 | size_t l = pimg->survey_len; |
---|
[0ff23cb] | 834 | const char *s = pimg->label_buf; |
---|
[76bbb7c9] | 835 | if (result == img_LINE) { |
---|
| 836 | if (strncmp(pimg->survey, s, l) != 0 || |
---|
| 837 | !(s[l] == '.' || s[l] == '\0')) { |
---|
[421b7d2] | 838 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
[76bbb7c9] | 839 | pimg->pending = 15; |
---|
[421b7d2] | 840 | goto again3; |
---|
[76bbb7c9] | 841 | } |
---|
| 842 | } else { |
---|
| 843 | if (strncmp(pimg->survey, s, l + 1) != 0) { |
---|
[4d3dfdf] | 844 | if (!skip_coord(pimg->fh)) return img_BAD; |
---|
| 845 | pimg->pending = 0; |
---|
[76bbb7c9] | 846 | goto again3; |
---|
| 847 | } |
---|
| 848 | } |
---|
[0ff23cb] | 849 | pimg->label += l; |
---|
| 850 | /* skip the dot if there */ |
---|
| 851 | if (*pimg->label) pimg->label++; |
---|
[76bbb7c9] | 852 | } |
---|
| 853 | |
---|
| 854 | if (result == img_LINE && pimg->pending) { |
---|
| 855 | *p = pimg->mv; |
---|
[ad9a5cd] | 856 | if (!read_coord(pimg->fh, &(pimg->mv))) return img_BAD; |
---|
[76bbb7c9] | 857 | pimg->pending = opt; |
---|
| 858 | return img_MOVE; |
---|
| 859 | } |
---|
| 860 | pimg->flags = (int)opt & 0x3f; |
---|
[d69255f] | 861 | break; |
---|
| 862 | } |
---|
| 863 | default: |
---|
| 864 | img_errno = IMG_BADFORMAT; |
---|
| 865 | return img_BAD; |
---|
| 866 | } |
---|
[ad9a5cd] | 867 | if (!read_coord(pimg->fh, p)) return img_BAD; |
---|
[76bbb7c9] | 868 | pimg->pending = 0; |
---|
[d69255f] | 869 | return result; |
---|
[4d3dfdf] | 870 | } |
---|
| 871 | |
---|
| 872 | pimg->label = pimg->label_buf; |
---|
| 873 | |
---|
| 874 | if (pimg->version > 0) { |
---|
[d69255f] | 875 | static long opt_lookahead = 0; |
---|
[ad9a5cd] | 876 | static img_point pt = { 0.0, 0.0, 0.0 }; |
---|
[a420b49] | 877 | long opt; |
---|
| 878 | again: /* label to goto if we get a cross */ |
---|
[5d7280f8] | 879 | pimg->label[0] = '\0'; |
---|
[ad9a5cd] | 880 | |
---|
[5c3c61a] | 881 | if (pimg->version == 1) { |
---|
[c4d4649] | 882 | if (opt_lookahead) { |
---|
| 883 | opt = opt_lookahead; |
---|
| 884 | opt_lookahead = 0; |
---|
| 885 | } else { |
---|
| 886 | opt = get32(pimg->fh); |
---|
| 887 | } |
---|
[5c3c61a] | 888 | } else { |
---|
[421b7d2] | 889 | opt = getc(pimg->fh); |
---|
[5c3c61a] | 890 | } |
---|
[ad9a5cd] | 891 | |
---|
| 892 | if (feof(pimg->fh)) { |
---|
| 893 | img_errno = IMG_BADFORMAT; |
---|
| 894 | return img_BAD; |
---|
| 895 | } |
---|
| 896 | if (ferror(pimg->fh)) { |
---|
| 897 | img_errno = IMG_READERROR; |
---|
| 898 | return img_BAD; |
---|
| 899 | } |
---|
| 900 | |
---|
[a420b49] | 901 | switch (opt) { |
---|
[437caf3] | 902 | case -1: case 0: |
---|
[a420b49] | 903 | return img_STOP; /* end of data marker */ |
---|
| 904 | case 1: |
---|
[ad9a5cd] | 905 | /* skip coordinates */ |
---|
[4d3dfdf] | 906 | if (!skip_coord(pimg->fh)) { |
---|
[ad9a5cd] | 907 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
| 908 | return img_BAD; |
---|
| 909 | } |
---|
[a420b49] | 910 | goto again; |
---|
[23f7ea7] | 911 | case 2: case 3: { |
---|
[fe8e80e] | 912 | char *q; |
---|
[3a1f8da] | 913 | int ch; |
---|
[437caf3] | 914 | result = img_LABEL; |
---|
[3a1f8da] | 915 | ch = getc(pimg->fh); |
---|
[d69255f] | 916 | if (ch == EOF) { |
---|
[ad9a5cd] | 917 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
[d69255f] | 918 | return img_BAD; |
---|
| 919 | } |
---|
[3a1f8da] | 920 | if (ch != '\\') ungetc(ch, pimg->fh); |
---|
[0ff23cb] | 921 | fgets(pimg->label_buf, 257, pimg->fh); |
---|
[421b7d2] | 922 | if (feof(pimg->fh)) { |
---|
[ad9a5cd] | 923 | img_errno = IMG_BADFORMAT; |
---|
| 924 | return img_BAD; |
---|
| 925 | } |
---|
[421b7d2] | 926 | if (ferror(pimg->fh)) { |
---|
[ad9a5cd] | 927 | img_errno = IMG_READERROR; |
---|
| 928 | return img_BAD; |
---|
| 929 | } |
---|
[0ff23cb] | 930 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
[d69255f] | 931 | if (*q != '\n') { |
---|
| 932 | img_errno = IMG_BADFORMAT; |
---|
| 933 | return img_BAD; |
---|
| 934 | } |
---|
[9968ebf] | 935 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
[0ff23cb] | 936 | if (q == pimg->label_buf) goto again; |
---|
[fe8e80e] | 937 | *q = '\0'; |
---|
[509e099] | 938 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
[437caf3] | 939 | if (opt == 2) goto done; |
---|
| 940 | break; |
---|
[23f7ea7] | 941 | } |
---|
[95c3272] | 942 | case 6: case 7: { |
---|
[ad9a5cd] | 943 | long len; |
---|
[23f7ea7] | 944 | result = img_LABEL; |
---|
[ad9a5cd] | 945 | |
---|
[509e099] | 946 | if (opt == 7) |
---|
| 947 | pimg->flags = getc(pimg->fh); |
---|
| 948 | else |
---|
| 949 | pimg->flags = img_SFLAG_UNDERGROUND; /* no flags given... */ |
---|
[ad9a5cd] | 950 | |
---|
[23f7ea7] | 951 | len = get32(pimg->fh); |
---|
[ad9a5cd] | 952 | |
---|
| 953 | if (feof(pimg->fh)) { |
---|
| 954 | img_errno = IMG_BADFORMAT; |
---|
| 955 | return img_BAD; |
---|
| 956 | } |
---|
| 957 | if (ferror(pimg->fh)) { |
---|
| 958 | img_errno = IMG_READERROR; |
---|
| 959 | return img_BAD; |
---|
| 960 | } |
---|
| 961 | |
---|
[9968ebf] | 962 | /* Ignore empty labels in some .3d files (caused by a bug) */ |
---|
| 963 | if (len == 0) goto again; |
---|
[d4d3655] | 964 | if (!check_label_space(pimg, len + 1)) { |
---|
| 965 | img_errno = IMG_OUTOFMEMORY; |
---|
| 966 | return img_BAD; |
---|
[23f7ea7] | 967 | } |
---|
[0ff23cb] | 968 | if (fread(pimg->label_buf, len, 1, pimg->fh) != 1) { |
---|
[ad9a5cd] | 969 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
[d69255f] | 970 | return img_BAD; |
---|
| 971 | } |
---|
[c3e5ba5] | 972 | pimg->label_buf[len] = '\0'; |
---|
[23f7ea7] | 973 | break; |
---|
| 974 | } |
---|
[a420b49] | 975 | case 4: |
---|
| 976 | result = img_MOVE; |
---|
| 977 | break; |
---|
| 978 | case 5: |
---|
| 979 | result = img_LINE; |
---|
| 980 | break; |
---|
| 981 | default: |
---|
[95c3272] | 982 | switch ((int)opt & 0xc0) { |
---|
| 983 | case 0x80: |
---|
| 984 | pimg->flags = (int)opt & 0x3f; |
---|
| 985 | result = img_LINE; |
---|
| 986 | break; |
---|
| 987 | case 0x40: { |
---|
| 988 | char *q; |
---|
| 989 | pimg->flags = (int)opt & 0x3f; |
---|
| 990 | result = img_LABEL; |
---|
[0ff23cb] | 991 | if (!fgets(pimg->label_buf, 257, pimg->fh)) { |
---|
[ad9a5cd] | 992 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
[d69255f] | 993 | return img_BAD; |
---|
| 994 | } |
---|
[0ff23cb] | 995 | q = pimg->label_buf + strlen(pimg->label_buf) - 1; |
---|
[9968ebf] | 996 | /* Ignore empty-labels in some .3d files (caused by a bug) */ |
---|
[0ff23cb] | 997 | if (q == pimg->label_buf) goto again; |
---|
[d69255f] | 998 | if (*q != '\n') { |
---|
| 999 | img_errno = IMG_BADFORMAT; |
---|
| 1000 | return img_BAD; |
---|
| 1001 | } |
---|
[95c3272] | 1002 | *q = '\0'; |
---|
| 1003 | break; |
---|
| 1004 | } |
---|
| 1005 | case 0xc0: |
---|
| 1006 | /* use this for an extra leg or station flag if we need it */ |
---|
| 1007 | default: |
---|
[d69255f] | 1008 | img_errno = IMG_BADFORMAT; |
---|
[95c3272] | 1009 | return img_BAD; |
---|
| 1010 | } |
---|
[437caf3] | 1011 | break; |
---|
[a420b49] | 1012 | } |
---|
[ad9a5cd] | 1013 | |
---|
| 1014 | if (!read_coord(pimg->fh, &pt)) return img_BAD; |
---|
[76bbb7c9] | 1015 | |
---|
[ed0f5b6] | 1016 | if (result == img_LABEL && pimg->survey_len) { |
---|
| 1017 | if (strncmp(pimg->label_buf, pimg->survey, pimg->survey_len + 1) != 0) |
---|
[0ff23cb] | 1018 | goto again; |
---|
| 1019 | pimg->label += pimg->survey_len + 1; |
---|
| 1020 | } |
---|
[76bbb7c9] | 1021 | |
---|
[a420b49] | 1022 | done: |
---|
[ad9a5cd] | 1023 | *p = pt; |
---|
[c4d4649] | 1024 | |
---|
| 1025 | if (result == img_MOVE && pimg->version == 1) { |
---|
[d69255f] | 1026 | /* peek at next code and see if it's an old-style label */ |
---|
[23f7ea7] | 1027 | opt_lookahead = get32(pimg->fh); |
---|
[ad9a5cd] | 1028 | |
---|
| 1029 | if (feof(pimg->fh)) { |
---|
| 1030 | img_errno = IMG_BADFORMAT; |
---|
| 1031 | return img_BAD; |
---|
| 1032 | } |
---|
| 1033 | if (ferror(pimg->fh)) { |
---|
| 1034 | img_errno = IMG_READERROR; |
---|
| 1035 | return img_BAD; |
---|
| 1036 | } |
---|
| 1037 | |
---|
[d69255f] | 1038 | if (opt_lookahead == 2) return img_read_item(pimg, p); |
---|
[c4d4649] | 1039 | } |
---|
[23f7ea7] | 1040 | |
---|
[a420b49] | 1041 | return result; |
---|
[0da6e60] | 1042 | } else if (pimg->version == 0) { |
---|
[a420b49] | 1043 | ascii_again: |
---|
[5d7280f8] | 1044 | pimg->label[0] = '\0'; |
---|
[a420b49] | 1045 | if (feof(pimg->fh)) return img_STOP; |
---|
[76bbb7c9] | 1046 | if (pimg->pending) { |
---|
| 1047 | pimg->pending = 0; |
---|
[a420b49] | 1048 | result = img_LINE; |
---|
| 1049 | } else { |
---|
[7d27e36] | 1050 | char cmd[7]; |
---|
[a420b49] | 1051 | /* Stop if nothing found */ |
---|
[7d27e36] | 1052 | if (fscanf(pimg->fh, "%6s", cmd) < 1) return img_STOP; |
---|
| 1053 | if (strcmp(cmd, "move") == 0) |
---|
[a420b49] | 1054 | result = img_MOVE; |
---|
[7d27e36] | 1055 | else if (strcmp(cmd, "draw") == 0) |
---|
[a420b49] | 1056 | result = img_LINE; |
---|
[7d27e36] | 1057 | else if (strcmp(cmd, "line") == 0) { |
---|
[bd1913f] | 1058 | /* set flag to indicate to process second triplet as LINE */ |
---|
[76bbb7c9] | 1059 | pimg->pending = 1; |
---|
[a420b49] | 1060 | result = img_MOVE; |
---|
[7d27e36] | 1061 | } else if (strcmp(cmd, "cross") == 0) { |
---|
[d69255f] | 1062 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
[ad9a5cd] | 1063 | img_errno = feof(pimg->fh) ? IMG_BADFORMAT : IMG_READERROR; |
---|
[0ed0e16] | 1064 | return img_BAD; |
---|
[d69255f] | 1065 | } |
---|
[a420b49] | 1066 | goto ascii_again; |
---|
[7d27e36] | 1067 | } else if (strcmp(cmd, "name") == 0) { |
---|
[0da6e60] | 1068 | size_t off = 0; |
---|
[58f02ae] | 1069 | int ch = getc(pimg->fh); |
---|
| 1070 | if (ch == ' ') ch = getc(pimg->fh); |
---|
| 1071 | while (ch != ' ') { |
---|
| 1072 | if (ch == '\n' || ch == EOF) { |
---|
| 1073 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
[ad9a5cd] | 1074 | return img_BAD; |
---|
| 1075 | } |
---|
[58f02ae] | 1076 | if (off == pimg->buf_len) { |
---|
[d4d3655] | 1077 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
[9b56f4d] | 1078 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1079 | return img_BAD; |
---|
| 1080 | } |
---|
[0da6e60] | 1081 | } |
---|
[58f02ae] | 1082 | pimg->label_buf[off++] = ch; |
---|
| 1083 | ch = getc(pimg->fh); |
---|
[ad9a5cd] | 1084 | } |
---|
[58f02ae] | 1085 | pimg->label_buf[off] = '\0'; |
---|
| 1086 | |
---|
| 1087 | pimg->label = pimg->label_buf; |
---|
| 1088 | if (pimg->label[0] == '\\') pimg->label++; |
---|
[0da6e60] | 1089 | |
---|
[a420b49] | 1090 | result = img_LABEL; |
---|
[d69255f] | 1091 | } else { |
---|
| 1092 | img_errno = IMG_BADFORMAT; |
---|
[a420b49] | 1093 | return img_BAD; /* unknown keyword */ |
---|
[d69255f] | 1094 | } |
---|
[a420b49] | 1095 | } |
---|
[d1b1380] | 1096 | |
---|
[d69255f] | 1097 | if (fscanf(pimg->fh, "%lf%lf%lf", &p->x, &p->y, &p->z) < 3) { |
---|
[ad9a5cd] | 1098 | img_errno = ferror(pimg->fh) ? IMG_READERROR : IMG_BADFORMAT; |
---|
[fe8e80e] | 1099 | return img_BAD; |
---|
[d69255f] | 1100 | } |
---|
| 1101 | |
---|
[58f02ae] | 1102 | if (result == img_LABEL && pimg->survey_len) { |
---|
| 1103 | if (strncmp(pimg->label, pimg->survey, pimg->survey_len + 1) != 0) |
---|
[0ff23cb] | 1104 | goto ascii_again; |
---|
| 1105 | pimg->label += pimg->survey_len + 1; |
---|
| 1106 | } |
---|
[76bbb7c9] | 1107 | |
---|
[a420b49] | 1108 | return result; |
---|
[ad4eaf3f] | 1109 | } else if (pimg->version == -1) { |
---|
[0da6e60] | 1110 | /* version -1: .pos file */ |
---|
[58f02ae] | 1111 | size_t off; |
---|
[5eea574] | 1112 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
[58f02ae] | 1113 | againpos: |
---|
| 1114 | off = 0; |
---|
[0da6e60] | 1115 | while (fscanf(pimg->fh, "(%lf,%lf,%lf ) ", &p->x, &p->y, &p->z) != 3) { |
---|
| 1116 | int ch; |
---|
| 1117 | if (ferror(pimg->fh)) { |
---|
| 1118 | img_errno = IMG_READERROR; |
---|
| 1119 | return img_BAD; |
---|
| 1120 | } |
---|
| 1121 | if (feof(pimg->fh)) return img_STOP; |
---|
| 1122 | if (pimg->pending) { |
---|
| 1123 | img_errno = IMG_BADFORMAT; |
---|
| 1124 | return img_BAD; |
---|
| 1125 | } |
---|
| 1126 | pimg->pending = 1; |
---|
| 1127 | /* ignore rest of line */ |
---|
| 1128 | do { |
---|
| 1129 | ch = getc(pimg->fh); |
---|
| 1130 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
| 1131 | } |
---|
| 1132 | |
---|
| 1133 | pimg->label_buf[0] = '\0'; |
---|
| 1134 | while (!feof(pimg->fh)) { |
---|
| 1135 | if (!fgets(pimg->label_buf + off, pimg->buf_len - off, pimg->fh)) { |
---|
| 1136 | img_errno = IMG_READERROR; |
---|
| 1137 | return img_BAD; |
---|
| 1138 | } |
---|
| 1139 | |
---|
| 1140 | off += strlen(pimg->label_buf + off); |
---|
| 1141 | if (off && pimg->label_buf[off - 1] == '\n') { |
---|
| 1142 | pimg->label_buf[off - 1] = '\0'; |
---|
| 1143 | break; |
---|
| 1144 | } |
---|
[d4d3655] | 1145 | if (!check_label_space(pimg, pimg->buf_len * 2)) { |
---|
[9b56f4d] | 1146 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1147 | return img_BAD; |
---|
| 1148 | } |
---|
[0da6e60] | 1149 | } |
---|
| 1150 | |
---|
[58f02ae] | 1151 | pimg->label = pimg->label_buf; |
---|
| 1152 | |
---|
[421b7d2] | 1153 | if (pimg->label[0] == '\\') pimg->label++; |
---|
[58f02ae] | 1154 | |
---|
| 1155 | if (pimg->survey_len) { |
---|
| 1156 | size_t l = pimg->survey_len + 1; |
---|
| 1157 | if (strncmp(pimg->survey, pimg->label, l) != 0) goto againpos; |
---|
| 1158 | pimg->label += l; |
---|
| 1159 | } |
---|
| 1160 | |
---|
[0da6e60] | 1161 | return img_LABEL; |
---|
[f1c7c9c7] | 1162 | } else if (pimg->version == -2) { |
---|
[ad4eaf3f] | 1163 | /* version -2: Compass .plt file */ |
---|
[4ebc557] | 1164 | if (pimg->pending > 0) { |
---|
| 1165 | /* -1 signals we've entered the first survey we want to |
---|
| 1166 | * read, and need to fudge lots if the first action is 'D'... |
---|
| 1167 | */ |
---|
| 1168 | /* pending MOVE or LINE */ |
---|
[984f49e] | 1169 | int r = pimg->pending - 4; |
---|
[ad4eaf3f] | 1170 | pimg->pending = 0; |
---|
| 1171 | pimg->flags = 0; |
---|
[f710a3f] | 1172 | pimg->label[pimg->label_len] = '\0'; |
---|
[ad4eaf3f] | 1173 | return r; |
---|
| 1174 | } |
---|
| 1175 | |
---|
| 1176 | while (1) { |
---|
[4ebc557] | 1177 | char *line; |
---|
[ad4eaf3f] | 1178 | char *q; |
---|
| 1179 | size_t len = 0; |
---|
[4ebc557] | 1180 | int ch = getc(pimg->fh); |
---|
| 1181 | |
---|
| 1182 | switch (ch) { |
---|
| 1183 | case '\x1a': case EOF: /* Don't insist on ^Z at end of file */ |
---|
| 1184 | return img_STOP; |
---|
[27bd06b] | 1185 | case 'X': case 'F': case 'S': |
---|
| 1186 | /* bounding boX (marks end of survey), Feature survey, or |
---|
| 1187 | * new Section - skip to next survey */ |
---|
| 1188 | if (pimg->survey) return img_STOP; |
---|
| 1189 | skip_to_N: |
---|
| 1190 | while (1) { |
---|
| 1191 | do { |
---|
| 1192 | ch = getc(pimg->fh); |
---|
| 1193 | } while (ch != '\n' && ch != '\r' && ch != EOF); |
---|
| 1194 | while (ch == '\n' || ch == '\r') ch = getc(pimg->fh); |
---|
| 1195 | if (ch == 'N') break; |
---|
| 1196 | if (ch == '\x1a' || ch == EOF) return img_STOP; |
---|
| 1197 | } |
---|
| 1198 | /* FALLTHRU */ |
---|
[4ebc557] | 1199 | case 'N': |
---|
| 1200 | line = getline_alloc(pimg->fh); |
---|
[f1c7c9c7] | 1201 | if (!line) { |
---|
| 1202 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1203 | return img_BAD; |
---|
| 1204 | } |
---|
[9f9c05e] | 1205 | while (line[len] > 32) ++len; |
---|
[ef59f5e] | 1206 | if (pimg->label_len == 0) pimg->pending = -1; |
---|
[4ebc557] | 1207 | if (!check_label_space(pimg, len + 1)) { |
---|
| 1208 | osfree(line); |
---|
| 1209 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1210 | return img_BAD; |
---|
| 1211 | } |
---|
| 1212 | pimg->label_len = len; |
---|
| 1213 | pimg->label = pimg->label_buf; |
---|
| 1214 | memcpy(pimg->label, line, len); |
---|
| 1215 | pimg->label[len] = '\0'; |
---|
| 1216 | osfree(line); |
---|
| 1217 | break; |
---|
| 1218 | case 'M': case 'D': { |
---|
[ad4eaf3f] | 1219 | /* Move or Draw */ |
---|
[4ebc557] | 1220 | long fpos = -1; |
---|
[27bd06b] | 1221 | if (pimg->survey && pimg->label_len == 0) { |
---|
[4ebc557] | 1222 | /* We're only holding onto this line in case the first line |
---|
[27bd06b] | 1223 | * of the 'N' is a 'D', so skip it for now... |
---|
[4ebc557] | 1224 | */ |
---|
[27bd06b] | 1225 | goto skip_to_N; |
---|
[4ebc557] | 1226 | } |
---|
| 1227 | if (ch == 'D' && pimg->pending == -1) { |
---|
[ef59f5e] | 1228 | if (pimg->survey) { |
---|
| 1229 | fpos = ftell(pimg->fh) - 1; |
---|
| 1230 | fseek(pimg->fh, pimg->start, SEEK_SET); |
---|
| 1231 | ch = getc(pimg->fh); |
---|
| 1232 | pimg->pending = 0; |
---|
| 1233 | } else { |
---|
| 1234 | /* If a file actually has a 'D' before any 'M', then |
---|
| 1235 | * pretend the 'D' is an 'M' - one of the examples |
---|
| 1236 | * in the docs was like this! */ |
---|
| 1237 | ch = 'M'; |
---|
| 1238 | } |
---|
[4ebc557] | 1239 | } |
---|
| 1240 | line = getline_alloc(pimg->fh); |
---|
[f1c7c9c7] | 1241 | if (!line) { |
---|
| 1242 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1243 | return img_BAD; |
---|
| 1244 | } |
---|
[88c780d] | 1245 | /* Compass store coordinates as North, East, Up = (y,x,z)! */ |
---|
| 1246 | if (sscanf(line, "%lf%lf%lf", &p->y, &p->x, &p->z) != 3) { |
---|
[ad4eaf3f] | 1247 | osfree(line); |
---|
| 1248 | if (ferror(pimg->fh)) { |
---|
| 1249 | img_errno = IMG_READERROR; |
---|
| 1250 | } else { |
---|
| 1251 | img_errno = IMG_BADFORMAT; |
---|
| 1252 | } |
---|
| 1253 | return img_BAD; |
---|
| 1254 | } |
---|
[a9ab65a] | 1255 | p->x *= METRES_PER_FOOT; |
---|
| 1256 | p->y *= METRES_PER_FOOT; |
---|
| 1257 | p->z *= METRES_PER_FOOT; |
---|
[ad4eaf3f] | 1258 | q = strchr(line, 'S'); |
---|
| 1259 | if (!q) { |
---|
| 1260 | osfree(line); |
---|
[5757725] | 1261 | img_errno = IMG_BADFORMAT; |
---|
[ad4eaf3f] | 1262 | return img_BAD; |
---|
| 1263 | } |
---|
| 1264 | ++q; |
---|
| 1265 | len = 0; |
---|
[9f9c05e] | 1266 | while (q[len] > ' ') ++len; |
---|
[ad4eaf3f] | 1267 | q[len] = '\0'; |
---|
[9f9c05e] | 1268 | len += 2; /* ' ' and '\0' */ |
---|
[d4d3655] | 1269 | if (!check_label_space(pimg, pimg->label_len + len)) { |
---|
| 1270 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1271 | return img_BAD; |
---|
[ad4eaf3f] | 1272 | } |
---|
| 1273 | pimg->label = pimg->label_buf; |
---|
[9df78d0] | 1274 | if (pimg->label_len) { |
---|
| 1275 | pimg->label[pimg->label_len] = ' '; |
---|
| 1276 | memcpy(pimg->label + pimg->label_len + 1, q, len - 1); |
---|
| 1277 | } else { |
---|
| 1278 | memcpy(pimg->label, q, len - 1); |
---|
| 1279 | } |
---|
[ad4eaf3f] | 1280 | osfree(line); |
---|
| 1281 | pimg->flags = img_SFLAG_UNDERGROUND; /* default flags */ |
---|
[0d922fc] | 1282 | if (fpos != -1) { |
---|
| 1283 | fseek(pimg->fh, fpos, SEEK_SET); |
---|
| 1284 | } else { |
---|
| 1285 | pimg->pending = (ch == 'M' ? img_MOVE : img_LINE) + 4; |
---|
| 1286 | } |
---|
[ad4eaf3f] | 1287 | return img_LABEL; |
---|
[4ebc557] | 1288 | } |
---|
[ad4eaf3f] | 1289 | default: |
---|
| 1290 | img_errno = IMG_BADFORMAT; |
---|
| 1291 | return img_BAD; |
---|
| 1292 | } |
---|
| 1293 | } |
---|
[f1c7c9c7] | 1294 | } else { |
---|
| 1295 | /* version -3 or -4: CMAP .xyz file */ |
---|
| 1296 | char *line = NULL; |
---|
| 1297 | char *q; |
---|
| 1298 | size_t len; |
---|
| 1299 | |
---|
| 1300 | if (pimg->pending) { |
---|
| 1301 | /* pending MOVE or LINE or LABEL or STOP */ |
---|
| 1302 | int r = pimg->pending - 4; |
---|
[c3e5ba5] | 1303 | /* Set label to empty - don't use "" as we adjust label relative |
---|
| 1304 | * to label_buf when label_buf is reallocated. */ |
---|
| 1305 | pimg->label = pimg->label_buf + strlen(pimg->label_buf); |
---|
[f1c7c9c7] | 1306 | pimg->flags = 0; |
---|
| 1307 | if (r == img_LABEL) { |
---|
| 1308 | /* nasty magic */ |
---|
| 1309 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
| 1310 | subtract_xyz_shot_deltas(p, pimg->label_buf + 16); |
---|
| 1311 | pimg->pending = img_STOP + 4; |
---|
| 1312 | return img_MOVE; |
---|
| 1313 | } |
---|
| 1314 | |
---|
| 1315 | pimg->pending = 0; |
---|
| 1316 | |
---|
| 1317 | if (r == img_STOP) { |
---|
| 1318 | /* nasty magic */ |
---|
| 1319 | read_xyz_shot_coords(p, pimg->label_buf + 16); |
---|
| 1320 | return img_LINE; |
---|
| 1321 | } |
---|
| 1322 | |
---|
| 1323 | return r; |
---|
| 1324 | } |
---|
| 1325 | |
---|
| 1326 | pimg->label = pimg->label_buf; |
---|
| 1327 | do { |
---|
| 1328 | osfree(line); |
---|
| 1329 | if (feof(pimg->fh)) return img_STOP; |
---|
| 1330 | line = getline_alloc(pimg->fh); |
---|
| 1331 | if (!line) { |
---|
| 1332 | img_errno = IMG_OUTOFMEMORY; |
---|
| 1333 | return img_BAD; |
---|
| 1334 | } |
---|
| 1335 | } while (line[0] == ' ' || line[0] == '\0'); |
---|
| 1336 | if (line[0] == '\x1a') return img_STOP; |
---|
| 1337 | |
---|
| 1338 | len = strlen(line); |
---|
| 1339 | if (pimg->version == -3) { |
---|
| 1340 | /* station variant */ |
---|
| 1341 | if (len < 37) { |
---|
| 1342 | osfree(line); |
---|
| 1343 | img_errno = IMG_BADFORMAT; |
---|
| 1344 | return img_BAD; |
---|
| 1345 | } |
---|
| 1346 | memcpy(pimg->label, line, 6); |
---|
| 1347 | q = memchr(pimg->label, ' ', 6); |
---|
| 1348 | if (!q) q = pimg->label + 6; |
---|
| 1349 | *q = '\0'; |
---|
| 1350 | |
---|
| 1351 | read_xyz_station_coords(p, line); |
---|
[9f9c05e] | 1352 | |
---|
[f1c7c9c7] | 1353 | /* FIXME: look at prev for lines (line + 32, 5) */ |
---|
| 1354 | /* FIXME: duplicate stations... */ |
---|
| 1355 | return img_LABEL; |
---|
| 1356 | } else { |
---|
| 1357 | /* Shot variant */ |
---|
| 1358 | char old[8], new[8]; |
---|
| 1359 | if (len < 61) { |
---|
| 1360 | osfree(line); |
---|
| 1361 | img_errno = IMG_BADFORMAT; |
---|
| 1362 | return img_BAD; |
---|
| 1363 | } |
---|
[9f9c05e] | 1364 | |
---|
[f1c7c9c7] | 1365 | memcpy(old, line, 7); |
---|
| 1366 | q = memchr(old, ' ', 7); |
---|
| 1367 | if (!q) q = old + 7; |
---|
| 1368 | *q = '\0'; |
---|
[9f9c05e] | 1369 | |
---|
[f1c7c9c7] | 1370 | memcpy(new, line + 7, 7); |
---|
| 1371 | q = memchr(new, ' ', 7); |
---|
| 1372 | if (!q) q = new + 7; |
---|
| 1373 | *q = '\0'; |
---|
[9f9c05e] | 1374 | |
---|
[f1c7c9c7] | 1375 | pimg->flags = img_SFLAG_UNDERGROUND; |
---|
| 1376 | |
---|
| 1377 | if (strcmp(old, new) == 0) { |
---|
| 1378 | pimg->pending = img_MOVE + 4; |
---|
| 1379 | read_xyz_shot_coords(p, line); |
---|
| 1380 | strcpy(pimg->label, new); |
---|
| 1381 | osfree(line); |
---|
| 1382 | return img_LABEL; |
---|
| 1383 | } |
---|
[9f9c05e] | 1384 | |
---|
[f1c7c9c7] | 1385 | if (strcmp(old, pimg->label) == 0) { |
---|
| 1386 | pimg->pending = img_LINE + 4; |
---|
| 1387 | read_xyz_shot_coords(p, line); |
---|
| 1388 | strcpy(pimg->label, new); |
---|
| 1389 | osfree(line); |
---|
| 1390 | return img_LABEL; |
---|
| 1391 | } |
---|
| 1392 | |
---|
| 1393 | pimg->pending = img_LABEL + 4; |
---|
| 1394 | read_xyz_shot_coords(p, line); |
---|
| 1395 | strcpy(pimg->label, new); |
---|
| 1396 | memcpy(pimg->label + 16, line, 70); |
---|
| 1397 | |
---|
| 1398 | osfree(line); |
---|
| 1399 | return img_LABEL; |
---|
| 1400 | } |
---|
[a420b49] | 1401 | } |
---|
[d1b1380] | 1402 | } |
---|
| 1403 | |
---|
[ad9a5cd] | 1404 | static int |
---|
[d69255f] | 1405 | write_v3label(img *pimg, int opt, const char *s) |
---|
| 1406 | { |
---|
| 1407 | size_t len, n, dot; |
---|
| 1408 | |
---|
| 1409 | /* find length of common prefix */ |
---|
| 1410 | dot = 0; |
---|
[0ff23cb] | 1411 | for (len = 0; s[len] == pimg->label_buf[len] && s[len] != '\0'; len++) { |
---|
[d69255f] | 1412 | if (s[len] == '.') dot = len + 1; |
---|
| 1413 | } |
---|
| 1414 | |
---|
[4c07c51] | 1415 | SVX_ASSERT(len <= pimg->label_len); |
---|
[d69255f] | 1416 | n = pimg->label_len - len; |
---|
| 1417 | if (len == 0) { |
---|
| 1418 | if (pimg->label_len) putc(0, pimg->fh); |
---|
| 1419 | } else if (n <= 16) { |
---|
| 1420 | if (n) putc(n + 15, pimg->fh); |
---|
| 1421 | } else if (dot == 0) { |
---|
| 1422 | if (pimg->label_len) putc(0, pimg->fh); |
---|
[99cf51a] | 1423 | len = 0; |
---|
[d69255f] | 1424 | } else { |
---|
[0ff23cb] | 1425 | const char *p = pimg->label_buf + dot; |
---|
[d69255f] | 1426 | n = 1; |
---|
| 1427 | for (len = pimg->label_len - dot - 17; len; len--) { |
---|
| 1428 | if (*p++ == '.') n++; |
---|
| 1429 | } |
---|
| 1430 | if (n <= 14) { |
---|
| 1431 | putc(n, pimg->fh); |
---|
| 1432 | len = dot; |
---|
| 1433 | } else { |
---|
| 1434 | if (pimg->label_len) putc(0, pimg->fh); |
---|
| 1435 | len = 0; |
---|
| 1436 | } |
---|
| 1437 | } |
---|
| 1438 | |
---|
| 1439 | n = strlen(s + len); |
---|
| 1440 | putc(opt, pimg->fh); |
---|
| 1441 | if (n < 0xfe) { |
---|
| 1442 | putc(n, pimg->fh); |
---|
| 1443 | } else if (n < 0xffff + 0xfe) { |
---|
| 1444 | putc(0xfe, pimg->fh); |
---|
| 1445 | put16(n - 0xfe, pimg->fh); |
---|
| 1446 | } else { |
---|
| 1447 | putc(0xff, pimg->fh); |
---|
| 1448 | put32(n, pimg->fh); |
---|
| 1449 | } |
---|
| 1450 | fwrite(s + len, n, 1, pimg->fh); |
---|
| 1451 | |
---|
| 1452 | n += len; |
---|
| 1453 | pimg->label_len = n; |
---|
[d4d3655] | 1454 | if (!check_label_space(pimg, n + 1)) |
---|
| 1455 | return 0; /* FIXME: distinguish out of memory... */ |
---|
[0ff23cb] | 1456 | memcpy(pimg->label_buf + len, s + len, n - len + 1); |
---|
[ad9a5cd] | 1457 | |
---|
| 1458 | return !ferror(pimg->fh); |
---|
[d69255f] | 1459 | } |
---|
| 1460 | |
---|
[a420b49] | 1461 | void |
---|
[95c3272] | 1462 | img_write_item(img *pimg, int code, int flags, const char *s, |
---|
[a9f5117] | 1463 | double x, double y, double z) |
---|
[a420b49] | 1464 | { |
---|
[647407d] | 1465 | if (!pimg) return; |
---|
[d69255f] | 1466 | if (pimg->version == 3) { |
---|
| 1467 | int opt = 0; |
---|
| 1468 | switch (code) { |
---|
| 1469 | case img_LABEL: |
---|
| 1470 | write_v3label(pimg, 0x40 | flags, s); |
---|
| 1471 | opt = 0; |
---|
| 1472 | break; |
---|
| 1473 | case img_MOVE: |
---|
| 1474 | opt = 15; |
---|
| 1475 | break; |
---|
| 1476 | case img_LINE: |
---|
| 1477 | write_v3label(pimg, 0x80 | flags, s ? s : ""); |
---|
| 1478 | opt = 0; |
---|
| 1479 | break; |
---|
| 1480 | default: /* ignore for now */ |
---|
| 1481 | return; |
---|
| 1482 | } |
---|
| 1483 | if (opt) putc(opt, pimg->fh); |
---|
| 1484 | /* Output in cm */ |
---|
[dd1d6369] | 1485 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
| 1486 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
| 1487 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
[d69255f] | 1488 | } else { |
---|
[23f7ea7] | 1489 | size_t len; |
---|
[badeec8] | 1490 | INT32_T opt = 0; |
---|
[4c07c51] | 1491 | SVX_ASSERT(pimg->version > 0); |
---|
[a420b49] | 1492 | switch (code) { |
---|
[437caf3] | 1493 | case img_LABEL: |
---|
| 1494 | if (pimg->version == 1) { |
---|
| 1495 | /* put a move before each label */ |
---|
[95c3272] | 1496 | img_write_item(pimg, img_MOVE, 0, NULL, x, y, z); |
---|
[437caf3] | 1497 | put32(2, pimg->fh); |
---|
[0ed0e16] | 1498 | fputsnl(s, pimg->fh); |
---|
[437caf3] | 1499 | return; |
---|
| 1500 | } |
---|
[23f7ea7] | 1501 | len = strlen(s); |
---|
[af56069] | 1502 | if (len > 255 || strchr(s, '\n')) { |
---|
[23f7ea7] | 1503 | /* long label - not in early incarnations of v2 format, but few |
---|
| 1504 | * 3d files will need these, so better not to force incompatibility |
---|
| 1505 | * with a new version I think... */ |
---|
[95c3272] | 1506 | putc(7, pimg->fh); |
---|
| 1507 | putc(flags, pimg->fh); |
---|
[23f7ea7] | 1508 | put32(len, pimg->fh); |
---|
| 1509 | fputs(s, pimg->fh); |
---|
| 1510 | } else { |
---|
[95c3272] | 1511 | putc(0x40 | (flags & 0x3f), pimg->fh); |
---|
[23f7ea7] | 1512 | fputsnl(s, pimg->fh); |
---|
| 1513 | } |
---|
[437caf3] | 1514 | opt = 0; |
---|
[23f7ea7] | 1515 | break; |
---|
[a420b49] | 1516 | case img_MOVE: |
---|
| 1517 | opt = 4; |
---|
| 1518 | break; |
---|
| 1519 | case img_LINE: |
---|
[421b7d2] | 1520 | if (pimg->version > 1) { |
---|
[d69255f] | 1521 | opt = 0x80 | (flags & 0x3f); |
---|
[437caf3] | 1522 | break; |
---|
[421b7d2] | 1523 | } |
---|
[437caf3] | 1524 | opt = 5; |
---|
[a420b49] | 1525 | break; |
---|
[437caf3] | 1526 | default: /* ignore for now */ |
---|
| 1527 | return; |
---|
[a420b49] | 1528 | } |
---|
[437caf3] | 1529 | if (pimg->version == 1) { |
---|
| 1530 | put32(opt, pimg->fh); |
---|
| 1531 | } else { |
---|
| 1532 | if (opt) putc(opt, pimg->fh); |
---|
[a420b49] | 1533 | } |
---|
[d69255f] | 1534 | /* Output in cm */ |
---|
[dd1d6369] | 1535 | put32((INT32_T)my_round(x * 100.0), pimg->fh); |
---|
| 1536 | put32((INT32_T)my_round(y * 100.0), pimg->fh); |
---|
| 1537 | put32((INT32_T)my_round(z * 100.0), pimg->fh); |
---|
[a420b49] | 1538 | } |
---|
[d1b1380] | 1539 | } |
---|
| 1540 | |
---|
[ad9a5cd] | 1541 | int |
---|
[a420b49] | 1542 | img_close(img *pimg) |
---|
| 1543 | { |
---|
[ad9a5cd] | 1544 | int result = 1; |
---|
[dbb4e19] | 1545 | if (pimg) { |
---|
| 1546 | if (pimg->fh) { |
---|
[76bbb7c9] | 1547 | if (pimg->fRead) { |
---|
| 1548 | osfree(pimg->survey); |
---|
[a2ad284] | 1549 | osfree(pimg->title); |
---|
| 1550 | osfree(pimg->datestamp); |
---|
[76bbb7c9] | 1551 | } else { |
---|
| 1552 | /* write end of data marker */ |
---|
[d69255f] | 1553 | switch (pimg->version) { |
---|
| 1554 | case 1: |
---|
[5c3c61a] | 1555 | put32((INT32_T)-1, pimg->fh); |
---|
[d69255f] | 1556 | break; |
---|
| 1557 | case 2: |
---|
| 1558 | putc(0, pimg->fh); |
---|
| 1559 | break; |
---|
| 1560 | case 3: |
---|
| 1561 | if (pimg->label_len) putc(0, pimg->fh); |
---|
[437caf3] | 1562 | putc(0, pimg->fh); |
---|
[d69255f] | 1563 | break; |
---|
[5c3c61a] | 1564 | } |
---|
| 1565 | } |
---|
[ad9a5cd] | 1566 | if (ferror(pimg->fh)) result = 0; |
---|
| 1567 | if (fclose(pimg->fh)) result = 0; |
---|
[0d922fc] | 1568 | if (!result) img_errno = pimg->fRead ? IMG_READERROR : IMG_WRITEERROR; |
---|
[dbb4e19] | 1569 | } |
---|
[0ff23cb] | 1570 | osfree(pimg->label_buf); |
---|
[dbb4e19] | 1571 | osfree(pimg); |
---|
[a420b49] | 1572 | } |
---|
[ad9a5cd] | 1573 | return result; |
---|
[d1b1380] | 1574 | } |
---|