Fri, 26 Aug 2016 13:49:19 +0200
merges all highlighter functions into one highlighter module
23 | 1 | /* |
2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
3 | * | |
35 | 4 | * Copyright 2016 Mike Becker. All rights reserved. |
23 | 5 | * |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions are met: | |
8 | * | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * | |
16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
26 | * POSSIBILITY OF SUCH DAMAGE. | |
27 | * | |
28 | */ | |
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29 | |
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30 | #include <unistd.h> |
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31 | |
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32 | #include "c2html.h" |
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33 | #include "highlighter.h" |
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34 | |
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35 | #include "ucx/list.h" |
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36 | |
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37 | void printhelp() { |
19 | 38 | printf("Formats source code using HTML.\n\nUsage:\n" |
39 | " c2html [Options] FILE\n\n" | |
40 | " Options:\n" | |
41 | " -h Prints this help message\n" | |
42 | " -j Highlight Java instead of C source code\n" | |
43 | " -o <output> Output file (stdout, if not specified)\n" | |
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44 | " -H <header> Prepend header file\n" |
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45 | " -F <footer> Append footer file\n" |
19 | 46 | " -p Disable highlighting (plain text)\n" |
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47 | " -l Disable line numbers\n" |
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48 | " -V, -v Prints version and exits\n" |
19 | 49 | "\n"); |
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50 | } |
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51 | |
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52 | void formatlines(highlighter_func highlighter, |
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53 | UcxList *in, write_func out, void *stream, int showlineno) { |
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54 | |
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55 | /* compute width of line numbering */ |
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56 | int lnw; |
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57 | if (showlineno) { |
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58 | size_t lines = ucx_list_size(in); |
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59 | lnw = 1; |
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60 | int p = 1; |
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61 | while ((p*=10) < lines) lnw++; |
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62 | } |
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63 | |
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64 | /* start monospace formatting */ |
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65 | out("<pre>\n", 1, 6, stream); |
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66 | |
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67 | /* process lines */ |
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68 | size_t lineno = 0; |
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69 | HighlighterData *hd = new_highlighter_data(); |
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70 | UcxBuffer *line = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND); |
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71 | if(!line || !hd) { |
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72 | perror("Error allocating buffer for output"); |
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73 | return; |
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74 | } |
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75 | |
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76 | UCX_FOREACH(sourceline, in) { |
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77 | /* increase line number and clean line buffer */ |
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78 | lineno++; |
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79 | ucx_buffer_clear(line); |
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80 | |
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81 | /* write line number */ |
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82 | if (showlineno) { |
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83 | ucx_bprintf(line, "<span class=\"c2html-lineno\">" |
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84 | "<a name=\"l%d\" href=\"#l%d\">%*d </a></span> ", |
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85 | lineno, lineno, lnw, lineno); |
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86 | } |
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87 | |
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88 | /* process code line */ |
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89 | highlighter(sourceline->data, line, hd); |
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90 | |
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91 | /* write code line */ |
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92 | out(line->space, 1, line->size, stream); |
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93 | } |
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94 | |
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95 | /* end monospace formatting */ |
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96 | out("</pre>\n", 1, 7, stream); |
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97 | |
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98 | /* cleanup and return */ |
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99 | free_highlighter_data(hd); |
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100 | ucx_buffer_free(line); |
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101 | } |
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102 | |
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103 | #define FILEBUF_SIZE 4096 |
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104 | |
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105 | enum source_type { |
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106 | SOURCE_C, |
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107 | SOURCE_JAVA, |
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108 | SOURCE_PLAIN |
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109 | }; |
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110 | |
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111 | int main(int argc, char** argv) { |
43 | 112 | |
113 | /* Default settings */ | |
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114 | Settings settings; |
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115 | memset(&settings, 0, sizeof(settings)); |
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116 | settings.showlinenumbers = 1; |
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117 | enum source_type sourcetype = SOURCE_C; |
19 | 118 | |
43 | 119 | /* Parse command line */ |
19 | 120 | char optc; |
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121 | while ((optc = getopt(argc, argv, "hljo:pH:F:vV")) != -1) { |
19 | 122 | switch (optc) { |
123 | case 'o': | |
124 | if (!(optarg[0] == '-' && optarg[1] == 0)) { | |
125 | settings.outfilename = optarg; | |
126 | } | |
127 | break; | |
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128 | case 'F': |
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129 | settings.footerfile = optarg; |
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130 | break; |
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131 | case 'H': |
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132 | settings.headerfile = optarg; |
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133 | break; |
19 | 134 | case 'j': |
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135 | sourcetype = SOURCE_JAVA; |
19 | 136 | break; |
137 | case 'p': | |
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138 | sourcetype = SOURCE_PLAIN; |
19 | 139 | break; |
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140 | case 'l': |
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141 | settings.showlinenumbers = 0; |
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142 | break; |
19 | 143 | case 'h': |
144 | printhelp(); | |
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145 | return EXIT_SUCCESS; |
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146 | case 'v': |
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147 | case 'V': |
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148 | #ifdef VERSION_DEVELOP |
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149 | printf("%d.%d (unstable)\n", VERSION_MAJOR, VERSION_MINOR); |
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150 | #else |
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151 | printf("%d.%d\n", VERSION_MAJOR, VERSION_MINOR); |
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152 | #endif |
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153 | return EXIT_SUCCESS; |
19 | 154 | default: |
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155 | return EXIT_FAILURE; |
11 | 156 | } |
19 | 157 | } |
158 | ||
159 | if (optind != argc-1) { | |
11 | 160 | printhelp(); |
43 | 161 | return EXIT_FAILURE; |
19 | 162 | } else { |
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163 | /* Choose highlighter */ |
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164 | highlighter_func hltr = NULL; |
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165 | switch (sourcetype) { |
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166 | case SOURCE_C: |
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167 | hltr = c_highlighter; |
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168 | break; |
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169 | case SOURCE_JAVA: |
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170 | hltr = java_highlighter; |
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171 | break; |
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172 | case SOURCE_PLAIN: |
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173 | hltr = plain_highlighter; |
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174 | break; |
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175 | default: /* should be unreachable */ |
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176 | fprintf(stderr, "error in enum source_type\n"); |
43 | 177 | return EXIT_FAILURE; |
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178 | } |
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179 | |
43 | 180 | /* Open output file */ |
181 | settings.infilename = argv[optind]; | |
182 | FILE *fout; | |
183 | if (settings.outfilename) { | |
184 | fout = fopen(settings.outfilename, "w"); | |
185 | if (!fout) { | |
186 | perror("Error opening output file"); | |
187 | return EXIT_FAILURE; | |
188 | } | |
189 | } else { | |
190 | fout = stdout; | |
191 | } | |
192 | ||
193 | /* Allocate file buffer */ | |
194 | char *filebuf = malloc(FILEBUF_SIZE); | |
195 | if (!filebuf) { | |
196 | perror("Error allocating file buffer"); | |
197 | return EXIT_FAILURE; | |
198 | } | |
199 | ||
200 | /* Prepend header file */ | |
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201 | { |
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202 | FILE *headerfile = fopen(settings.headerfile, "r"); |
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203 | if (!headerfile) { |
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204 | perror("Error opening header file"); |
43 | 205 | if (fout != stdout) { |
206 | fclose(fout); | |
207 | } | |
208 | return EXIT_FAILURE; | |
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209 | } |
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210 | ucx_stream_copy(headerfile, fout, |
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211 | (read_func) fread, (write_func) fwrite, |
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212 | filebuf, FILEBUF_SIZE, (size_t)-1); |
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213 | fclose(headerfile); |
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214 | } |
11 | 215 | |
43 | 216 | /* Process input file */ |
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217 | FILE *inputfile = fopen(settings.infilename, "r"); |
19 | 218 | if (inputfile) { |
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219 | UcxBuffer *content = ucx_buffer_new(NULL, |
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220 | FILEBUF_SIZE*2, UCX_BUFFER_AUTOEXTEND); |
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221 | { |
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222 | ucx_stream_copy(inputfile, content, (read_func) fread, |
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223 | (write_func) ucx_buffer_write, |
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224 | filebuf, FILEBUF_SIZE, (size_t)-1); |
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225 | } |
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226 | fclose(inputfile); |
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227 | |
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228 | UcxList *inputlines = ucx_list_append(NULL, content->space); |
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229 | for (size_t i = 1 ; i < content->size ; i++) { |
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230 | if (content->space[i] == '\r') { |
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231 | content->space[i] = '\n'; i++; |
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232 | } |
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233 | if (content->space[i] == '\n' && i+1 < content->size) { |
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234 | ucx_list_append(inputlines, content->space+i+1); |
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235 | } |
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236 | } |
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237 | |
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238 | formatlines(hltr, inputlines, |
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239 | (write_func) fwrite, fout, settings.showlinenumbers); |
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240 | |
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241 | ucx_buffer_free(content); |
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242 | } else { |
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243 | perror("Error opening input file"); |
43 | 244 | if (fout != stdout) { |
245 | fclose(fout); | |
246 | } | |
247 | return EXIT_FAILURE; | |
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248 | } |
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249 | |
43 | 250 | /* Append footer file */ |
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251 | { |
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252 | FILE *footerfile = fopen(settings.footerfile, "r"); |
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253 | if (!footerfile) { |
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254 | perror("Error opening footer file"); |
43 | 255 | if (fout != stdout) { |
256 | fclose(fout); | |
257 | } | |
258 | return EXIT_FAILURE; | |
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259 | } |
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260 | ucx_stream_copy(footerfile, fout, |
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261 | (read_func) fread, (write_func) fwrite, |
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262 | filebuf, FILEBUF_SIZE, (size_t)-1); |
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263 | fclose(footerfile); |
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264 | } |
43 | 265 | |
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266 | |
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267 | free(filebuf); |
19 | 268 | |
43 | 269 | return EXIT_SUCCESS; |
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270 | } |
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271 | } |
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272 |