Tue, 23 Aug 2016 12:05:41 +0200
adds version number and changes build system
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2016 Mike Becker. All rights reserved.
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 */
29 #include "c2html.h"
31 inputfile_t *inputfilebuffer(size_t capacity) {
32 inputfile_t *inputfile = (inputfile_t*) malloc(sizeof(inputfile_t));
33 inputfile->lines = (char**) malloc(capacity * sizeof(char*));
34 inputfile->capacity = capacity;
35 inputfile->count = 0;
36 inputfile->maxlinewidth = 0;
38 return inputfile;
39 }
41 void addline(inputfile_t *inputfile, char* line, size_t width) {
42 char *l = (char*) malloc(width+1);
43 memcpy(l, line, width);
44 l[width] = 0;
45 if (inputfile->count >= inputfile->capacity) {
46 inputfile->capacity <<= 1;
47 inputfile->lines = realloc(inputfile->lines,
48 sizeof(char*)*inputfile->capacity);
49 }
50 inputfile->lines[inputfile->count] = l;
51 inputfile->maxlinewidth =
52 width > inputfile->maxlinewidth ? width : inputfile->maxlinewidth;
53 inputfile->count++;
54 }
56 void freeinputfilebuffer(inputfile_t *inputfile) {
57 for (int i = 0 ; i < inputfile->count ; i++) {
58 free(inputfile->lines[i]);
59 }
60 free(inputfile->lines);
61 free(inputfile);
62 }
64 inputfile_t *readinput(char *filename) {
66 int fd = open(filename, O_RDONLY);
67 if (fd == -1) return NULL;
69 inputfile_t *inputfile = inputfilebuffer(512);
71 char buf[INPUTBUF_SIZE];
72 ssize_t r;
74 size_t maxlinewidth = 256;
75 char *line = (char*) malloc(maxlinewidth);
76 size_t col = 0;
78 while ((r = read(fd, buf, INPUTBUF_SIZE)) > 0) {
79 for (size_t i = 0 ; i < r ; i++) {
80 if (col >= maxlinewidth-4) {
81 maxlinewidth <<= 1;
82 line = realloc(line, maxlinewidth);
83 }
85 if (buf[i] == '\n') {
86 line[col++] = '\n';
87 line[col] = 0;
88 addline(inputfile, line, col);
89 col = 0;
90 } else {
91 line[col++] = buf[i];
92 }
93 }
94 }
96 free(line);
98 close(fd);
100 return inputfile;
101 }
103 void printhelp() {
104 printf("Formats source code using HTML.\n\nUsage:\n"
105 " c2html [Options] FILE\n\n"
106 " Options:\n"
107 " -h Prints this help message\n"
108 " -j Highlight Java instead of C source code\n"
109 " -o <output> Output file (stdout, if not specified)\n"
110 " -H <header> Prepend header file\n"
111 " -F <footer> Append footer file\n"
112 " -p Disable highlighting (plain text)\n"
113 " -l Disable line numbers\n"
114 " -V, -v Prints version and exits\n"
115 "\n");
116 }
118 int lnint(size_t lnc) {
119 int w = 1, p = 1;
120 while ((p*=10) < lnc) w++;
121 return w;
122 }
124 int copyfile(char *filename, FILE *dest) {
125 if (!filename) {
126 return 0;
127 }
129 FILE *src = fopen(filename, "r");
130 if (src) {
131 char buf[4096];
132 int r;
133 while ((r = fread(buf, 1, 4096, src)) > 0) {
134 fwrite(buf, 1, r, dest);
135 }
136 fclose(src);
137 return 0;
138 } else {
139 return -1;
140 }
141 }
143 #define WRITECONST(stream, out, cstr) out(cstr, 1, sizeof(cstr)-1, stream)
144 int formatfile(
145 highlighter_t *highlighter,
146 inputfile_t *in,
147 fmt_write_func out,
148 void *stream,
149 _Bool showln) {
150 // formats an input file and writes the result to out
152 char *line = malloc(in->maxlinewidth*64);
153 if(!line) {
154 return 1;
155 }
156 WRITECONST(stream, out, "<pre>\n");
158 int lnw = lnint(in->count);
159 for (int i = 0 ; i < in->count ; i++) {
160 if (highlighter) {
161 highlighter->parser(in->lines[i], line, highlighter);
162 } else {
163 char *c = in->lines[i];
164 size_t dp = 0;
165 while (*c) {
166 dp = writeescapedchar(line, dp, *c);
167 c++;
168 }
169 line[dp] = '\0';
170 }
172 // write line number
173 if (showln) {
174 WRITECONST(stream, out, "<span class=\"c2html-lineno\">");
175 char lnbuf[128];
176 int len;
177 // line number link
178 len = snprintf(lnbuf, 128, "<a name=\"l%d\" href=\"#l%d\">",
179 i+1, i+1);
180 out(lnbuf, 1, len, stream);
181 // justified line number
182 len = snprintf(lnbuf, 128, "%*d ", lnw, i+1);
183 out(lnbuf, 1, len, stream);
184 WRITECONST(stream, out, "</a></span> ");
185 }
187 // write formated (or plain) code line
188 out(line, 1, strlen(line), stream);
189 }
191 WRITECONST(stream, out, "</pre>\n");
192 free(line);
193 return 0;
194 }
196 void init_c_highlighter(highlighter_t *highlighter) {
197 memset(highlighter, 0, sizeof(highlighter_t));
198 highlighter->isdirective = check_cdirective;
199 highlighter->istype = check_ctype;
200 highlighter->keywords = ckeywords;
201 highlighter->parser = cparseline;
202 }
204 void init_java_highlighter(highlighter_t *highlighter) {
205 memset(highlighter, 0, sizeof(highlighter_t));
206 highlighter->isdirective = check_jdirective;
207 highlighter->istype = check_jtype;
208 highlighter->keywords = jkeywords;
209 highlighter->parser = jparseline;
210 }
212 int main(int argc, char** argv) {
213 int retcode = EXIT_SUCCESS;
215 settings_t settings;
216 memset(&settings, 0, sizeof(settings));
217 settings.highlight = 1;
218 settings.showlinenumbers = 1;
220 int lang = C2HTML_C;
222 char optc;
223 while ((optc = getopt(argc, argv, "hljo:pH:F:vV")) != -1) {
224 switch (optc) {
225 case 'o':
226 if (!(optarg[0] == '-' && optarg[1] == 0)) {
227 settings.outfilename = optarg;
228 }
229 break;
230 case 'F':
231 settings.footerfile = optarg;
232 break;
233 case 'H':
234 settings.headerfile = optarg;
235 break;
236 case 'j':
237 lang = C2HTML_JAVA;
238 break;
239 case 'p':
240 settings.highlight = 0;
241 break;
242 case 'l':
243 settings.showlinenumbers = 0;
244 break;
245 case 'h':
246 printhelp();
247 return 0;
248 case 'v':
249 case 'V':
250 #ifdef VERSION_DEVELOP
251 printf("%d.%d (unstable)\n", VERSION_MAJOR, VERSION_MINOR);
252 #else
253 printf("%d.%d\n", VERSION_MAJOR, VERSION_MINOR);
254 #endif
255 return 0;
256 default:
257 return 1;
258 }
259 }
261 if (optind != argc-1) {
262 printhelp();
263 return 1;
264 } else {
265 settings.infilename = argv[optind];
266 FILE *fout;
267 if (settings.outfilename) {
268 fout = fopen(settings.outfilename, "w");
269 if (!fout) {
270 perror("Error opening output file");
271 return -1;
272 }
273 } else {
274 fout = stdout;
275 }
277 if (copyfile(settings.headerfile, fout)) {
278 perror("Error opening header file");
279 retcode = -1;
280 goto prog_end;
281 }
283 highlighter_t highlighter;
284 highlighter_t *hptr = &highlighter;
285 switch (lang) {
286 case C2HTML_C:
287 init_c_highlighter(&highlighter);
288 break;
289 case C2HTML_JAVA:
290 init_java_highlighter(&highlighter);
291 break;
292 default:
293 hptr = NULL;
294 break;
295 }
296 if (!settings.highlight) {
297 hptr = NULL;
298 }
300 inputfile_t *inputfile = readinput(settings.infilename);
301 if (inputfile) {
302 formatfile(
303 hptr,
304 inputfile,
305 (fmt_write_func)fwrite,
306 fout,
307 settings.showlinenumbers);
308 freeinputfilebuffer(inputfile);
309 } else {
310 perror("Error opening input file");
311 retcode = -1;
312 }
314 if (copyfile(settings.footerfile, fout)) {
315 perror("Error opening footer file");
316 retcode = -1;
317 }
319 prog_end:
320 if (fout != stdout) {
321 fclose(fout);
322 }
324 return retcode;
325 }
326 }