shared.c (view raw)
1/* shared.c: global vars + some callback functions
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9#include "cgit.h"
10
11struct cgit_repolist cgit_repolist;
12struct cgit_context ctx;
13int cgit_cmd;
14
15const char *cgit_version = CGIT_VERSION;
16
17int chk_zero(int result, char *msg)
18{
19 if (result != 0)
20 die("%s: %s", msg, strerror(errno));
21 return result;
22}
23
24int chk_positive(int result, char *msg)
25{
26 if (result <= 0)
27 die("%s: %s", msg, strerror(errno));
28 return result;
29}
30
31int chk_non_negative(int result, char *msg)
32{
33 if (result < 0)
34 die("%s: %s",msg, strerror(errno));
35 return result;
36}
37
38struct cgit_repo *cgit_add_repo(const char *url)
39{
40 struct cgit_repo *ret;
41
42 if (++cgit_repolist.count > cgit_repolist.length) {
43 if (cgit_repolist.length == 0)
44 cgit_repolist.length = 8;
45 else
46 cgit_repolist.length *= 2;
47 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
48 cgit_repolist.length *
49 sizeof(struct cgit_repo));
50 }
51
52 ret = &cgit_repolist.repos[cgit_repolist.count-1];
53 ret->url = trim_end(url, '/');
54 ret->name = ret->url;
55 ret->path = NULL;
56 ret->desc = "[no description]";
57 ret->owner = NULL;
58 ret->group = ctx.cfg.repo_group;
59 ret->defbranch = "master";
60 ret->snapshots = ctx.cfg.snapshots;
61 ret->enable_log_filecount = ctx.cfg.enable_log_filecount;
62 ret->enable_log_linecount = ctx.cfg.enable_log_linecount;
63 ret->module_link = ctx.cfg.module_link;
64 ret->readme = NULL;
65 return ret;
66}
67
68struct cgit_repo *cgit_get_repoinfo(const char *url)
69{
70 int i;
71 struct cgit_repo *repo;
72
73 for (i=0; i<cgit_repolist.count; i++) {
74 repo = &cgit_repolist.repos[i];
75 if (!strcmp(repo->url, url))
76 return repo;
77 }
78 return NULL;
79}
80
81void *cgit_free_commitinfo(struct commitinfo *info)
82{
83 free(info->author);
84 free(info->author_email);
85 free(info->committer);
86 free(info->committer_email);
87 free(info->subject);
88 free(info->msg);
89 free(info->msg_encoding);
90 free(info);
91 return NULL;
92}
93
94int hextoint(char c)
95{
96 if (c >= 'a' && c <= 'f')
97 return 10 + c - 'a';
98 else if (c >= 'A' && c <= 'F')
99 return 10 + c - 'A';
100 else if (c >= '0' && c <= '9')
101 return c - '0';
102 else
103 return -1;
104}
105
106char *trim_end(const char *str, char c)
107{
108 int len;
109 char *s, *t;
110
111 if (str == NULL)
112 return NULL;
113 t = (char *)str;
114 len = strlen(t);
115 while(len > 0 && t[len - 1] == c)
116 len--;
117
118 if (len == 0)
119 return NULL;
120
121 c = t[len];
122 t[len] = '\0';
123 s = xstrdup(t);
124 t[len] = c;
125 return s;
126}
127
128char *strlpart(char *txt, int maxlen)
129{
130 char *result;
131
132 if (!txt)
133 return txt;
134
135 if (strlen(txt) <= maxlen)
136 return txt;
137 result = xmalloc(maxlen + 1);
138 memcpy(result, txt, maxlen - 3);
139 result[maxlen-1] = result[maxlen-2] = result[maxlen-3] = '.';
140 result[maxlen] = '\0';
141 return result;
142}
143
144char *strrpart(char *txt, int maxlen)
145{
146 char *result;
147
148 if (!txt)
149 return txt;
150
151 if (strlen(txt) <= maxlen)
152 return txt;
153 result = xmalloc(maxlen + 1);
154 memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
155 result[0] = result[1] = result[2] = '.';
156 return result;
157}
158
159void cgit_add_ref(struct reflist *list, struct refinfo *ref)
160{
161 size_t size;
162
163 if (list->count >= list->alloc) {
164 list->alloc += (list->alloc ? list->alloc : 4);
165 size = list->alloc * sizeof(struct refinfo *);
166 list->refs = xrealloc(list->refs, size);
167 }
168 list->refs[list->count++] = ref;
169}
170
171struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
172{
173 struct refinfo *ref;
174
175 ref = xmalloc(sizeof (struct refinfo));
176 ref->refname = xstrdup(refname);
177 ref->object = parse_object(sha1);
178 switch (ref->object->type) {
179 case OBJ_TAG:
180 ref->tag = cgit_parse_tag((struct tag *)ref->object);
181 break;
182 case OBJ_COMMIT:
183 ref->commit = cgit_parse_commit((struct commit *)ref->object);
184 break;
185 }
186 return ref;
187}
188
189int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
190 void *cb_data)
191{
192 struct reflist *list = (struct reflist *)cb_data;
193 struct refinfo *info = cgit_mk_refinfo(refname, sha1);
194
195 if (info)
196 cgit_add_ref(list, info);
197 return 0;
198}
199
200void cgit_diff_tree_cb(struct diff_queue_struct *q,
201 struct diff_options *options, void *data)
202{
203 int i;
204
205 for (i = 0; i < q->nr; i++) {
206 if (q->queue[i]->status == 'U')
207 continue;
208 ((filepair_fn)data)(q->queue[i]);
209 }
210}
211
212static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
213{
214 enum object_type type;
215
216 if (is_null_sha1(sha1)) {
217 file->ptr = (char *)"";
218 file->size = 0;
219 } else {
220 file->ptr = read_sha1_file(sha1, &type,
221 (unsigned long *)&file->size);
222 }
223 return 1;
224}
225
226/*
227 * Receive diff-buffers from xdiff and concatenate them as
228 * needed across multiple callbacks.
229 *
230 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
231 * ripped from git and modified to use globals instead of
232 * a special callback-struct.
233 */
234char *diffbuf = NULL;
235int buflen = 0;
236
237int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
238{
239 int i;
240
241 for (i = 0; i < nbuf; i++) {
242 if (mb[i].ptr[mb[i].size-1] != '\n') {
243 /* Incomplete line */
244 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
245 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
246 buflen += mb[i].size;
247 continue;
248 }
249
250 /* we have a complete line */
251 if (!diffbuf) {
252 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
253 continue;
254 }
255 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
256 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
257 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
258 free(diffbuf);
259 diffbuf = NULL;
260 buflen = 0;
261 }
262 if (diffbuf) {
263 ((linediff_fn)priv)(diffbuf, buflen);
264 free(diffbuf);
265 diffbuf = NULL;
266 buflen = 0;
267 }
268 return 0;
269}
270
271int cgit_diff_files(const unsigned char *old_sha1,
272 const unsigned char *new_sha1,
273 linediff_fn fn)
274{
275 mmfile_t file1, file2;
276 xpparam_t diff_params;
277 xdemitconf_t emit_params;
278 xdemitcb_t emit_cb;
279
280 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
281 return 1;
282
283 diff_params.flags = XDF_NEED_MINIMAL;
284 emit_params.ctxlen = 3;
285 emit_params.flags = XDL_EMIT_FUNCNAMES;
286 emit_params.find_func = NULL;
287 emit_cb.outf = filediff_cb;
288 emit_cb.priv = fn;
289 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
290 return 0;
291}
292
293void cgit_diff_tree(const unsigned char *old_sha1,
294 const unsigned char *new_sha1,
295 filepair_fn fn, const char *prefix)
296{
297 struct diff_options opt;
298 int ret;
299 int prefixlen;
300
301 diff_setup(&opt);
302 opt.output_format = DIFF_FORMAT_CALLBACK;
303 opt.detect_rename = 1;
304 opt.rename_limit = ctx.cfg.renamelimit;
305 DIFF_OPT_SET(&opt, RECURSIVE);
306 opt.format_callback = cgit_diff_tree_cb;
307 opt.format_callback_data = fn;
308 if (prefix) {
309 opt.nr_paths = 1;
310 opt.paths = &prefix;
311 prefixlen = strlen(prefix);
312 opt.pathlens = &prefixlen;
313 }
314 diff_setup_done(&opt);
315
316 if (old_sha1 && !is_null_sha1(old_sha1))
317 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
318 else
319 ret = diff_root_tree_sha1(new_sha1, "", &opt);
320 diffcore_std(&opt);
321 diff_flush(&opt);
322}
323
324void cgit_diff_commit(struct commit *commit, filepair_fn fn)
325{
326 unsigned char *old_sha1 = NULL;
327
328 if (commit->parents)
329 old_sha1 = commit->parents->item->object.sha1;
330 cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL);
331}
332
333int cgit_parse_snapshots_mask(const char *str)
334{
335 const struct cgit_snapshot_format *f;
336 static const char *delim = " \t,:/|;";
337 int tl, sl, rv = 0;
338
339 /* favor legacy setting */
340 if(atoi(str))
341 return 1;
342 for(;;) {
343 str += strspn(str,delim);
344 tl = strcspn(str,delim);
345 if (!tl)
346 break;
347 for (f = cgit_snapshot_formats; f->suffix; f++) {
348 sl = strlen(f->suffix);
349 if((tl == sl && !strncmp(f->suffix, str, tl)) ||
350 (tl == sl-1 && !strncmp(f->suffix+1, str, tl-1))) {
351 rv |= f->bit;
352 break;
353 }
354 }
355 str += tl;
356 }
357 return rv;
358}