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authorGravatar Lars Hjemli <hjemli@gmail.com>2007-05-13 18:24:23 (JST)
committerGravatar Lars Hjemli <hjemli@gmail.com>2007-05-13 18:24:23 (JST)
commit1b49de3c2c52e29c78f870826b6334abdadc0295 (patch)
tree65c91902c77afe4837d2a650de5863e6afc9c9a7
parentf5af0beb6ab569d64950ca55a52a07923917ce81 (diff)
downloadcgit-1b49de3c2c52e29c78f870826b6334abdadc0295.zip
cgit-1b49de3c2c52e29c78f870826b6334abdadc0295.tar.gz
Add shared diff-handling functions
This adds a standard interface for tree diffing. Signed-off-by: Lars Hjemli <hjemli@gmail.com>
-rw-r--r--cgit.h5
-rw-r--r--shared.c47
2 files changed, 50 insertions, 2 deletions
diff --git a/cgit.h b/cgit.h
index b7f8827..24b02d7 100644
--- a/cgit.h
+++ b/cgit.h
@@ -19,6 +19,7 @@
19 19
20 20
21typedef void (*configfn)(const char *name, const char *value); 21typedef void (*configfn)(const char *name, const char *value);
22typedef void (*filepair_fn)(struct diff_filepair *pair);
22 23
23struct cacheitem { 24struct cacheitem {
24 char *name; 25 char *name;
@@ -116,6 +117,10 @@ extern int chk_positive(int result, char *msg);
116extern int hextoint(char c); 117extern int hextoint(char c);
117 118
118extern void *cgit_free_commitinfo(struct commitinfo *info); 119extern void *cgit_free_commitinfo(struct commitinfo *info);
120extern void cgit_diff_tree(const unsigned char *old_sha1,
121 const unsigned char *new_sha1,
122 filepair_fn fn);
123extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
119 124
120extern char *fmt(const char *format,...); 125extern char *fmt(const char *format,...);
121 126
diff --git a/shared.c b/shared.c
index 19d2df0..f8a17b6 100644
--- a/shared.c
+++ b/shared.c
@@ -74,8 +74,8 @@ struct repoinfo *add_repo(const char *url)
74 cgit_repolist.length = 8; 74 cgit_repolist.length = 8;
75 else 75 else
76 cgit_repolist.length *= 2; 76 cgit_repolist.length *= 2;
77 cgit_repolist.repos = xrealloc(cgit_repolist.repos, 77 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
78 cgit_repolist.length * 78 cgit_repolist.length *
79 sizeof(struct repoinfo)); 79 sizeof(struct repoinfo));
80 } 80 }
81 81
@@ -195,3 +195,46 @@ int hextoint(char c)
195 return -1; 195 return -1;
196} 196}
197 197
198void cgit_diff_tree_cb(struct diff_queue_struct *q,
199 struct diff_options *options, void *data)
200{
201 int i;
202
203 for (i = 0; i < q->nr; i++) {
204 if (q->queue[i]->status == 'U')
205 continue;
206 ((filepair_fn)data)(q->queue[i]);
207 }
208}
209
210void cgit_diff_tree(const unsigned char *old_sha1,
211 const unsigned char *new_sha1,
212 filepair_fn fn)
213{
214 struct diff_options opt;
215 int ret;
216
217 diff_setup(&opt);
218 opt.output_format = DIFF_FORMAT_CALLBACK;
219 opt.detect_rename = 1;
220 opt.recursive = 1;
221 opt.format_callback = cgit_diff_tree_cb;
222 opt.format_callback_data = fn;
223 diff_setup_done(&opt);
224
225 if (old_sha1)
226 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
227 else
228 ret = diff_root_tree_sha1(new_sha1, "", &opt);
229 diffcore_std(&opt);
230 diff_flush(&opt);
231}
232
233void cgit_diff_commit(struct commit *commit, filepair_fn fn)
234{
235 unsigned char *old_sha1 = NULL;
236
237 if (commit->parents)
238 old_sha1 = commit->parents->item->object.sha1;
239 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
240}