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