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annotate lwar/replace.c @ 265:6f4c4d59666f

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Make lwar use the "b" flag when opening files. Due to the dumbness on Windows systems related to text vs. binary file distinctions, one needs to add 'b' to fopen() calls when dealing with binary files.
author William Astle <lost@l-w.ca>
date Sun, 10 Feb 2013 19:22:24 -0700
parents 346966cffeef
children 221b5f58d8ad
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /*
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2 replace.c
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3 Copyright © 2009 William Astle
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4
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5 This file is part of LWAR.
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6
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7 LWAR is free software: you can redistribute it and/or modify it under the
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8 terms of the GNU General Public License as published by the Free Software
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9 Foundation, either version 3 of the License, or (at your option) any later
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10 version.
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11
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12 This program is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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15 more details.
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16
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17 You should have received a copy of the GNU General Public License along with
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18 this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 */
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21
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22 #include <errno.h>
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23 #include <stdio.h>
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24 #include <stdlib.h>
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25 #include <string.h>
2
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26 #include <unistd.h>
0
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27
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28 #include "lwar.h"
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29
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30 void do_replace(void)
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31 {
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32 FILE *f;
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33 FILE *nf;
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34 unsigned char buf[8];
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35 long l;
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36 int c;
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37 FILE *f2;
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38 int i;
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39 char fnbuf[1024];
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40 char fnbuf2[1024];
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41
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42 sprintf(fnbuf, "%s.tmp", archive_file);
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43
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44 f = fopen(archive_file, "rb+");
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45 if (!f)
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46 {
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47 if (errno == ENOENT)
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48 {
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49 nf = fopen(fnbuf, "wb");
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50 if (nf)
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51 {
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52 fputs("LWAR1V", nf);
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53 goto doadd;
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54 }
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55 }
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56 perror("Cannot open archive file");
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57 }
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58
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59 (void)(fread(buf, 1, 6, f) && 1);
0
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60 if (memcmp("LWAR1V", buf, 6))
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61 {
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62 fprintf(stderr, "%s is not a valid archive file.\n", archive_file);
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63 exit(1);
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64 }
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65
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66 nf = fopen(fnbuf, "wb");
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67 if (!nf)
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68 {
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69 perror("Cannot create temp archive file");
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70 exit(1);
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71 }
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72
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73 fputs("LWAR1V", nf);
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74
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75 for (;;)
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76 {
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77 c = fgetc(f);
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78 if (c == EOF && ferror(f))
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79 {
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80 perror("Reading archive file");
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81 exit(1);
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82 }
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83 if (c == EOF)
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84 goto doadd;
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85
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86 if (!c)
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87 {
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88 goto doadd;
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89 }
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90
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91 // find the end of the file name
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92 i = 0;
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93 while (c)
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94 {
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95 fnbuf2[i++] = c;
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96 c = fgetc(f);
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97 if (c == EOF || ferror(f))
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98 {
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99 fprintf(stderr, "Bad archive file\n");
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100 exit(1);
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101 }
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102 }
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103 fnbuf2[i] = 0;
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104
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105 // get length of archive member
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106 l = 0;
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107 c = fgetc(f);
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108 l = c << 24;
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109 c = fgetc(f);
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110 l |= c << 16;
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111 c = fgetc(f);
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112 l |= c << 8;
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113 c = fgetc(f);
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114 l |= c;
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115
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116 // is it a file we are replacing? if so, do not copy it
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117 for (i = 0; i < nfiles; i++)
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118 {
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119 if (!strcmp(files[i], fnbuf2))
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120 break;
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121 }
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122 if (i < nfiles)
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123 {
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124 fseek(f, l, SEEK_CUR);
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125 }
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126 else
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127 {
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128 // otherwise, copy it
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129 fprintf(nf, "%s", fnbuf2);
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130 fputc(0, nf);
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131 fputc(l >> 24, nf);
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132 fputc((l >> 16) & 0xff, nf);
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133 fputc((l >> 8) & 0xff, nf);
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134 fputc(l & 0xff, nf);
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135 while (l)
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136 {
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137 c = fgetc(f);
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138 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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139 l--;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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140 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
141 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
142 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
143
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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144 // done with the original file
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
145 fclose(f);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
146 doadd:
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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147 for (i = 0; i < nfiles; i++)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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148 {
265
6f4c4d59666f Make lwar use the "b" flag when opening files.
William Astle <lost@l-w.ca>
parents: 264
diff changeset
149 f2 = fopen(files[i], "rb");
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
150 if (!f2)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff changeset
151 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
152 fprintf(stderr, "Cannot open file %s:", files[i]);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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153 perror("");
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
154 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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155 }
264
346966cffeef Clean up various warnings when building under -Wall
William Astle <lost@l-w.ca>
parents: 2
diff changeset
156 (void)(fread(buf, 1, 6, f2) && 1);
0
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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157 if (mergeflag && !memcmp("LWAR1V", buf, 6))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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158 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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159 // add archive contents...
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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160 for (;;)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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161 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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162 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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163 if (c == EOF || ferror(f2))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
164 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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165 perror("Reading input archive file");
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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166 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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167 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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168 if (c == EOF)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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169 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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170
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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171 if (!c)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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172 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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173 break;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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174 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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175
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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176 // find the end of the file name
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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177 while (c)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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178 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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179 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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180 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
181 if (c == EOF || ferror(f))
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
182 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
183 fprintf(stderr, "Bad input archive file\n");
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
184 exit(1);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
185 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
186 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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187 fputc(0, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
188
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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189 // get length of archive member
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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190 l = 0;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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191 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
192 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
193 l = c << 24;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
194 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
195 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
196 l |= c << 16;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
197 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
198 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
199 l |= c << 8;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
200 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
201 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
202 l |= c;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
203
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
204 while (l)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
205 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
206 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
207 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
208 l--;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
209 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
210 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
211
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
212 fclose(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
213 continue;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
214 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
215 fseek(f2, 0, SEEK_END);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
216 l = ftell(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
217 fseek(f2, 0, SEEK_SET);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
218 fputs(files[i], nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
219 fputc(0, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
220 fputc(l >> 24, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
221 fputc((l >> 16) & 0xff, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
222 fputc((l >> 8) & 0xff, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
223 fputc(l & 0xff, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
224 while (l)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
225 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
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diff changeset
226 c = fgetc(f2);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
227 fputc(c, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
228 l--;
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
229 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
230 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
231
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
232 // flag end of file
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
233 fputc(0, nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
234
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
235 fclose(nf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
236
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
237 if (rename(fnbuf, archive_file) < 0)
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
238 {
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
239 perror("Cannot replace old archive file");
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
240 unlink(fnbuf);
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
241 }
2c24602be78f Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff changeset
242 }