src/frontend.c

Mon, 13 Nov 2017 13:52:00 +0100

author
Mike Becker <universe@uap-core.de>
date
Mon, 13 Nov 2017 13:52:00 +0100
changeset 61
47a5fc33590a
parent 57
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child 67
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permissions
-rw-r--r--

ucx is now used as external library

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2016 Mike Becker. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 *
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28 */
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29
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30 #include <stdio.h>
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31 #include <stdlib.h>
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32 #include <unistd.h>
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33 #include <string.h>
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34
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35 #include "c2html.h"
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36 #include <ucx/utils.h>
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37
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38 #define FILEBUF_SIZE 4096
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39
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40 typedef struct {
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41 char* outfilename;
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42 char* headerfile;
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43 char* footerfile;
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44 char* infilename;
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45 int showlinenumbers;
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46 } Settings;
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47
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48 static int appendfile(const char *filename, FILE *fout,
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49 char *copybuf, size_t copybuflen, const char *errmsg) {
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50 FILE *headerfile = fopen(filename, "r");
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51 if (!headerfile) {
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52 perror(errmsg);
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53 if (fout != stdout) {
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54 fclose(fout);
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55 }
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56 return 1;
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57 }
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58 ucx_stream_bncopy(headerfile, fout,
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59 (read_func) fread, (write_func) fwrite,
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60 copybuf, copybuflen, (size_t)-1);
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61 fclose(headerfile);
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62 return 0;
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63 }
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64
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65 static void printhelp() {
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66 printf("Formats source code using HTML.\n\nUsage:\n"
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67 " c2html [Options] FILE\n\n"
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68 " Options:\n"
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69 " -h Prints this help message\n"
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70 " -j Highlight Java instead of C source code\n"
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71 " -o <output> Output file (stdout, if not specified)\n"
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72 " -H <header> Prepend header file\n"
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73 " -F <footer> Append footer file\n"
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74 " -p Disable highlighting (plain text)\n"
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75 " -l Disable line numbers\n"
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76 " -V, -v Prints version and exits\n"
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77 "\n");
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78 }
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79
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80 int main(int argc, char** argv) {
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81
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82 /* Default settings */
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83 Settings settings;
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84 memset(&settings, 0, sizeof(settings));
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85 settings.showlinenumbers = 1;
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86 c2html_highlighter_func hltr = c2html_c_highlighter;
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87
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88 /* Parse command line */
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89 char optc;
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90 while ((optc = getopt(argc, argv, "hljo:pH:F:vV")) != -1) {
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91 switch (optc) {
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92 case 'o':
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93 if (!(optarg[0] == '-' && optarg[1] == 0)) {
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94 settings.outfilename = optarg;
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95 }
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96 break;
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97 case 'F':
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98 settings.footerfile = optarg;
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99 break;
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100 case 'H':
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101 settings.headerfile = optarg;
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102 break;
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103 case 'j':
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104 hltr = c2html_java_highlighter;
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105 break;
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106 case 'p':
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107 hltr = c2html_plain_highlighter;
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108 break;
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109 case 'l':
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110 settings.showlinenumbers = 0;
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111 break;
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112 case 'h':
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113 printhelp();
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114 return EXIT_SUCCESS;
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115 case 'v':
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116 case 'V':
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117 #ifdef VERSION_DEVELOP
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118 printf("%d.%d (unstable)\n", VERSION_MAJOR, VERSION_MINOR);
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119 #else
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120 printf("%d.%d\n", VERSION_MAJOR, VERSION_MINOR);
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121 #endif
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122 return EXIT_SUCCESS;
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123 default:
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124 return EXIT_FAILURE;
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125 }
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126 }
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127
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128 if (optind != argc-1) {
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129 printhelp();
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130 return EXIT_FAILURE;
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131 } else {
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132 /* Open output file */
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133 settings.infilename = argv[optind];
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134 FILE *fout;
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135 if (settings.outfilename) {
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136 fout = fopen(settings.outfilename, "w");
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137 if (!fout) {
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138 perror("Error opening output file");
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139 return EXIT_FAILURE;
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140 }
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141 } else {
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142 fout = stdout;
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143 }
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144
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145 /* Allocate file buffer */
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146 char *filebuf = malloc(FILEBUF_SIZE);
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147 if (!filebuf) {
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148 perror("Error allocating file buffer");
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149 return EXIT_FAILURE;
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150 }
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151
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152 /* Prepend header file */
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153 if (appendfile(settings.headerfile, fout, filebuf, FILEBUF_SIZE,
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154 "Error opening header file")) {
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155 return EXIT_FAILURE;
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156 }
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157
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158 /* Process input file */
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159 FILE *inputfile = fopen(settings.infilename, "r");
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160 if (inputfile) {
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161 c2html_fformatf(
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162 inputfile, filebuf, FILEBUF_SIZE,
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163 fout, hltr, settings.showlinenumbers
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164 );
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165 fclose(inputfile);
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166 } else {
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167 perror("Error opening input file");
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168 if (fout != stdout) {
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169 fclose(fout);
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170 }
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171 return EXIT_FAILURE;
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172 }
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173
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174 /* Append footer file */
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175 if (appendfile(settings.footerfile, fout, filebuf, FILEBUF_SIZE,
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176 "Error opening footer file")) {
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177 return EXIT_FAILURE;
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178 }
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179
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180 free(filebuf);
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181
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182 return EXIT_SUCCESS;
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183 }
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184 }
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185

mercurial