src/frontend.c

Wed, 10 Jul 2024 21:35:37 +0200

author
Mike Becker <universe@uap-core.de>
date
Wed, 10 Jul 2024 21:35:37 +0200
changeset 75
c72b250866ab
parent 70
60cecca5e484
child 78
719e3c6d4c9b
permissions
-rw-r--r--

add basic support for line continuations in C highlighter

things that still do not work:
- user includes
- splitting keywords

fixes #392

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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 <cx/utils.h>
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37
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38 typedef struct {
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39 char* outfilename;
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40 char* headerfile;
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41 char* footerfile;
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42 char* infilename;
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43 int showlinenumbers;
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44 } Settings;
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45
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46 static int appendfile(const char *filename, FILE *fout, const char *errmsg) {
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47 FILE *fin = fopen(filename, "r");
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48 if (!fin) {
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49 perror(errmsg);
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50 if (fout != stdout) {
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51 fclose(fout);
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52 }
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53 return 1;
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54 }
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55 cx_stream_copy(fin, fout, (cx_read_func) fread, (cx_write_func) fwrite);
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56 fclose(fin);
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57 return 0;
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58 }
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59
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60 static void printhelp() {
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61 printf("Formats source code using HTML.\n\nUsage:\n"
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62 " c2html [Options] FILE\n\n"
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63 " Options:\n"
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64 " -h Prints this help message\n"
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65 " -j Highlight Java instead of C source code\n"
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66 " -o <output> Output file (stdout, if not specified)\n"
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67 " -H <header> Prepend header file\n"
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68 " -F <footer> Append footer file\n"
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69 " -p Disable highlighting (plain text)\n"
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70 " -l Disable line numbers\n"
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71 " -V, -v Prints version and exits\n"
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72 "\n");
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73 }
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74
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75 int main(int argc, char** argv) {
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76
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77 /* Default settings */
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78 Settings settings;
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79 memset(&settings, 0, sizeof(settings));
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80 settings.showlinenumbers = 1;
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81 c2html_highlighter_func hltr = c2html_c_highlighter;
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82
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83 /* Parse command line */
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84 int optc;
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85 while ((optc = getopt(argc, argv, "hljo:pH:F:vV")) != -1) {
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86 switch (optc) {
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87 case 'o':
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88 if (!(optarg[0] == '-' && optarg[1] == 0)) {
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89 settings.outfilename = optarg;
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90 }
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91 break;
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92 case 'F':
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93 settings.footerfile = optarg;
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94 break;
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95 case 'H':
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96 settings.headerfile = optarg;
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97 break;
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98 case 'j':
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99 hltr = c2html_java_highlighter;
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100 break;
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101 case 'p':
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102 hltr = c2html_plain_highlighter;
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103 break;
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104 case 'l':
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105 settings.showlinenumbers = 0;
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106 break;
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107 case 'h':
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108 printhelp();
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109 return EXIT_SUCCESS;
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110 case 'v':
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111 case 'V':
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112 #ifdef VERSION_DEVELOP
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113 printf("%d.%d (unstable)\n", VERSION_MAJOR, VERSION_MINOR);
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114 #else
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115 printf("%d.%d\n", VERSION_MAJOR, VERSION_MINOR);
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116 #endif
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117 return EXIT_SUCCESS;
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118 default:
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119 return EXIT_FAILURE;
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120 }
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121 }
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122
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123 if (optind != argc-1) {
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124 printhelp();
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125 return EXIT_FAILURE;
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126 } else {
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127 /* Open output file */
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128 settings.infilename = argv[optind];
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129 FILE *fout;
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130 if (settings.outfilename) {
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131 fout = fopen(settings.outfilename, "w");
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132 if (!fout) {
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133 perror("Error opening output file");
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134 return EXIT_FAILURE;
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135 }
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136 } else {
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137 fout = stdout;
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138 }
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139
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140 /* Prepend header file */
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141 if (appendfile(settings.headerfile, fout,
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142 "Error opening header file")) {
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143 return EXIT_FAILURE;
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144 }
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145
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146 /* Process input file */
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147 FILE *inputfile = fopen(settings.infilename, "r");
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148 if (inputfile) {
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149 CxBuffer fbuf;
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150 cxBufferInit(&fbuf, NULL, 4096, NULL, CX_BUFFER_AUTO_EXTEND);
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151 cx_stream_copy(inputfile, &fbuf, (cx_read_func) fread,
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152 (cx_write_func) cxBufferWrite);
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153 cxBufferPut(&fbuf, 0);
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154 fclose(inputfile);
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155 c2html_textformat(
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156 fbuf.space, fout, (cx_write_func ) fwrite, hltr,
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157 settings.showlinenumbers
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158 );
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159 cxBufferDestroy(&fbuf);
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160 } else {
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161 perror("Error opening input file");
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162 if (fout != stdout) {
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163 fclose(fout);
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164 }
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165 return EXIT_FAILURE;
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166 }
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167
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168 /* Append footer file */
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169 if (appendfile(settings.footerfile, fout,
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170 "Error opening footer file")) {
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171 return EXIT_FAILURE;
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172 }
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Mike Becker <universe@uap-core.de>
parents:
diff changeset
173
bf54085ce341 adds appropriate public API
Mike Becker <universe@uap-core.de>
parents:
diff changeset
174 return EXIT_SUCCESS;
bf54085ce341 adds appropriate public API
Mike Becker <universe@uap-core.de>
parents:
diff changeset
175 }
bf54085ce341 adds appropriate public API
Mike Becker <universe@uap-core.de>
parents:
diff changeset
176 }
bf54085ce341 adds appropriate public API
Mike Becker <universe@uap-core.de>
parents:
diff changeset
177

mercurial