Show list of modified files in ui-commit.c

Compare current commit with 1.parent, and for each affected file display
current filemode, old filemode if changed, current filename and source
filename if it was a copy/rename.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 111 insertions, 0 deletions

diff --git a/ui-commit.c b/ui-commit.c
index 8916212..c5ee8e7 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -8,6 +8,111 @@
 
 #include "cgit.h"
 
+int files = 0;
+
+void print_filepair(struct diff_filepair *pair)
+{
+	char *query;
+	char *class;
+	
+	switch (pair->status) {
+	case DIFF_STATUS_ADDED:
+		class = "add";
+		break;
+	case DIFF_STATUS_COPIED:
+		class = "cpy";
+		break;
+	case DIFF_STATUS_DELETED:
+		class = "del";
+		break;
+	case DIFF_STATUS_MODIFIED:
+		class = "upd";
+		break;
+	case DIFF_STATUS_RENAMED:
+		class = "mov";
+		break;
+	case DIFF_STATUS_TYPE_CHANGED:
+		class = "typ";
+		break;
+	case DIFF_STATUS_UNKNOWN:
+		class = "unk";
+		break;
+	case DIFF_STATUS_UNMERGED:
+		class = "stg";
+		break;
+	default:
+		die("bug: unhandled diff status %c", pair->status);
+	}
+
+	html("<tr>");
+	htmlf("<td class='mode'>");
+	html_filemode(pair->two->mode);
+	if (pair->one->mode != pair->two->mode) {
+		html("<span class='modechange'>[");
+		html_filemode(pair->one->mode);
+		html("]</span>");
+	}
+	htmlf("</td><td class='%s'>", class);
+	query = fmt("id=%s", sha1_to_hex(pair->two->sha1));	
+	html_link_open(cgit_pageurl(cgit_query_repo, "view", query), 
+		       NULL, NULL);
+	if (pair->status == DIFF_STATUS_COPIED || 
+	    pair->status == DIFF_STATUS_RENAMED) {
+		html_txt(pair->two->path);
+		htmlf("</a> (%s from ", pair->status == DIFF_STATUS_COPIED ? 
+		      "copied" : "renamed");
+		query = fmt("id=%s", sha1_to_hex(pair->one->sha1));	
+		html_link_open(cgit_pageurl(cgit_query_repo, "view", query), 
+			       NULL, NULL);
+		html_txt(pair->one->path);
+		html("</a>)");
+	} else {
+		html_txt(pair->two->path);
+		html("</a>");
+	}
+	html("<td>");
+
+	//TODO: diffstat graph
+	
+	html("</td></tr>\n");
+	files++;	
+}
+
+void diff_format_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;
+		print_filepair(q->queue[i]);
+	}
+}
+
+void cgit_diffstat(struct commit *commit)
+{
+	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 = diff_format_cb;
+	diff_setup_done(&opt);
+	
+	if (commit->parents)
+		ret = diff_tree_sha1(commit->parents->item->object.sha1,
+				     commit->object.sha1,
+				     "", &opt);
+	else
+		ret = diff_root_tree_sha1(commit->object.sha1, "", &opt);
+
+	diffcore_std(&opt);
+	diff_flush(&opt);
+}
+
 void cgit_print_commit(const char *hex)
 {
 	struct commit *commit;
@@ -62,5 +167,11 @@ void cgit_print_commit(const char *hex)
 	html("<div class='commit-msg'>");
 	html_txt(info->msg);
 	html("</div>");
+	html("<table class='diffstat'>");
+	html("<tr><th colspan='3'>Affected files</tr>\n");
+	cgit_diffstat(commit);
+	htmlf("<tr><td colspan='3' class='summary'>"
+	      "%d file%s changed</td></tr>\n", files, files > 1 ? "s" : "");
+	html("</table>");
 	cgit_free_commitinfo(info);
 }