cgit

commit 1415f3f3e017d0123e850707c55cb7e5e5887406

Author: Johan Herland <johan@herland.net>

ui-log: Fix filecount/linecount when path limit is in effect

When using ui-log with path limits, the listing of commits enables parent
rewriting in Git's internal log machinery. This did not work well together
with cgit_diff_commit() which is used to generate the filecount and
linecount numbers for each commit in the log view. cgit_diff_commit() would
operate without any path limits, and would therefore process the full diff
between the commits shown (which, because of parent rewriting, is not the
same as processing the diff for the commit itself). Additionally, the bottom
commit in the log view would (again, because of parent rewriting) have zero
parents, causing us to process the entire diff between the empty tree and
that commit. Since path limits were not in effect, this would (in large
projects) reports thousands of files and millions of lines changed in that
bottom commit.

This patch fixes the issue by applying the same path limit to
cgit_diff_commit() as is applied to the rest of the log view. The result is
that the filecount/linecount now only reflects the diff as it pertains to
the given path limit.

Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>

 cgit.h | 3 ++-
 shared.c | 4 ++--
 ui-log.c | 2 +-


diff --git a/cgit.h b/cgit.h
index a9896cf23cb2d72980df532ee9ae4f89e31499f5..f5f68ac74c76d33110354645aeba464827dec736 100644
--- a/cgit.h
+++ b/cgit.h
@@ -294,7 +294,8 @@ extern void cgit_diff_tree(const unsigned char *old_sha1,
 			   const unsigned char *new_sha1,
 			   filepair_fn fn, const char *prefix, int ignorews);
 
-extern void cgit_diff_commit(struct commit *commit, filepair_fn fn);
+extern void cgit_diff_commit(struct commit *commit, filepair_fn fn,
+			     const char *prefix);
 
 __attribute__((format (printf,1,2)))
 extern char *fmt(const char *format,...);




diff --git a/shared.c b/shared.c
index 72ac140d605cfe9b0144d757e041e9dfbb07e5ee..765cd276dd9b0eb947bed9820793d98a18a45a16 100644
--- a/shared.c
+++ b/shared.c
@@ -338,13 +338,13 @@ 	diffcore_std(&opt);
 	diff_flush(&opt);
 }
 
-void cgit_diff_commit(struct commit *commit, filepair_fn fn)
+void cgit_diff_commit(struct commit *commit, filepair_fn fn, const char *prefix)
 {
 	unsigned char *old_sha1 = NULL;
 
 	if (commit->parents)
 		old_sha1 = commit->parents->item->object.sha1;
-	cgit_diff_tree(old_sha1, commit->object.sha1, fn, NULL,
+	cgit_diff_tree(old_sha1, commit->object.sha1, fn, prefix,
 		       ctx.qry.ignorews);
 }
 




diff --git a/ui-log.c b/ui-log.c
index 41b5225616933bcc7ab80a155ef0f7ba6c65b4cd..bc0c02cd5aad4bcd5ee9846bcd4da0ed38435b12 100644
--- a/ui-log.c
+++ b/ui-log.c
@@ -101,7 +101,7 @@ 	if (ctx.repo->enable_log_filecount) {
 		files = 0;
 		add_lines = 0;
 		rem_lines = 0;
-		cgit_diff_commit(commit, inspect_files);
+		cgit_diff_commit(commit, inspect_files, ctx.qry.vpath);
 		html("</td><td>");
 		htmlf("%d", files);
 		if (ctx.repo->enable_log_linecount) {