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authorLars Hjemli <hjemli@gmail.com>2007-05-13 11:24:23 +0200
committerLars Hjemli <hjemli@gmail.com>2007-05-13 11:24:23 +0200
commit1b49de3c2c52e29c78f870826b6334abdadc0295 (patch)
tree65c91902c77afe4837d2a650de5863e6afc9c9a7
parentf5af0beb6ab569d64950ca55a52a07923917ce81 (diff)
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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 @@
typedef void (*configfn)(const char *name, const char *value);
+typedef void (*filepair_fn)(struct diff_filepair *pair);
struct cacheitem {
char *name;
@@ -116,6 +117,10 @@ extern int chk_positive(int result, char *msg);
extern int hextoint(char c);
extern void *cgit_free_commitinfo(struct commitinfo *info);
+extern void cgit_diff_tree(const unsigned char *old_sha1,
+ const unsigned char *new_sha1,
+ filepair_fn fn);
+extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
extern char *fmt(const char *format,...);
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)
cgit_repolist.length = 8;
else
cgit_repolist.length *= 2;
- cgit_repolist.repos = xrealloc(cgit_repolist.repos,
- cgit_repolist.length *
+ cgit_repolist.repos = xrealloc(cgit_repolist.repos,
+ cgit_repolist.length *
sizeof(struct repoinfo));
}
@@ -195,3 +195,46 @@ int hextoint(char c)
return -1;
}
+void cgit_diff_tree_cb(struct diff_queue_struct *q,
+ struct diff_options *options, void *data)
+{
+ int i;
+
+ for (i = 0; i < q->nr; i++) {
+ if (q->queue[i]->status == 'U')
+ continue;
+ ((filepair_fn)data)(q->queue[i]);
+ }
+}
+
+void cgit_diff_tree(const unsigned char *old_sha1,
+ const unsigned char *new_sha1,
+ filepair_fn fn)
+{
+ struct diff_options opt;
+ int ret;
+
+ diff_setup(&opt);
+ opt.output_format = DIFF_FORMAT_CALLBACK;
+ opt.detect_rename = 1;
+ opt.recursive = 1;
+ opt.format_callback = cgit_diff_tree_cb;
+ opt.format_callback_data = fn;
+ diff_setup_done(&opt);
+
+ if (old_sha1)
+ ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
+ else
+ ret = diff_root_tree_sha1(new_sha1, "", &opt);
+ diffcore_std(&opt);
+ diff_flush(&opt);
+}
+
+void cgit_diff_commit(struct commit *commit, filepair_fn fn)
+{
+ unsigned char *old_sha1 = NULL;
+
+ if (commit->parents)
+ old_sha1 = commit->parents->item->object.sha1;
+ cgit_diff_tree(old_sha1, commit->object.sha1, fn);
+}