Use standard tree-diff function when showing diffstat for single commit

Remove unneeded code from ui-commit.c and replace with call to standard
diff-functions.

Also fix some whitespace issues.

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

1 files changed, 15 insertions, 51 deletions

diff --git a/ui-commit.c b/ui-commit.c
index 3618800..f1a22d3 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -1,194 +1,158 @@
 /* ui-commit.c: generate commit view
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #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'>");
 	if (is_null_sha1(pair->two->sha1)) {
 		html_filemode(pair->one->mode);
 	} else {
 		html_filemode(pair->two->mode);
 	}
 
-	if (pair->one->mode != pair->two->mode && 
-	    !is_null_sha1(pair->one->sha1) && 
+	if (pair->one->mode != pair->two->mode &&
+	    !is_null_sha1(pair->one->sha1) &&
 	    !is_null_sha1(pair->two->sha1)) {
 		html("<span class='modechange'>[");
 		html_filemode(pair->one->mode);
 		html("]</span>");
 	}
 	htmlf("</td><td class='%s'>", class);
-	query = fmt("id=%s&id2=%s", sha1_to_hex(pair->one->sha1), 
-		    sha1_to_hex(pair->two->sha1));	
-	html_link_open(cgit_pageurl(cgit_query_repo, "diff", query), 
+	query = fmt("id=%s&id2=%s", sha1_to_hex(pair->one->sha1),
+		    sha1_to_hex(pair->two->sha1));
+	html_link_open(cgit_pageurl(cgit_query_repo, "diff", query),
 		       NULL, NULL);
-	if (pair->status == DIFF_STATUS_COPIED || 
+	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 ? 
+		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), 
+		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);
+	html("</td></tr>\n");
+	files++;
 }
 
 void cgit_print_commit(const char *hex)
 {
 	struct commit *commit;
 	struct commitinfo *info;
 	struct commit_list *p;
 	unsigned char sha1[20];
 	char *query;
 	char *filename;
 
 	if (get_sha1(hex, sha1)) {
 		cgit_print_error(fmt("Bad object id: %s", hex));
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit) {
 		cgit_print_error(fmt("Bad commit reference: %s", hex));
 		return;
 	}
 	info = cgit_parse_commit(commit);
 
 	html("<table class='commit-info'>\n");
 	html("<tr><th>author</th><td>");
 	html_txt(info->author);
 	html(" ");
 	html_txt(info->author_email);
 	html("</td><td class='right'>");
 	cgit_print_date(info->author_date);
 	html("</td></tr>\n");
 	html("<tr><th>committer</th><td>");
 	html_txt(info->committer);
 	html(" ");
 	html_txt(info->committer_email);
 	html("</td><td class='right'>");
 	cgit_print_date(info->committer_date);
 	html("</td></tr>\n");
 	html("<tr><th>tree</th><td colspan='2' class='sha1'><a href='");
 	query = fmt("id=%s", sha1_to_hex(commit->tree->object.sha1));
 	html_attr(cgit_pageurl(cgit_query_repo, "tree", query));
 	htmlf("'>%s</a></td></tr>\n", sha1_to_hex(commit->tree->object.sha1));
       	for (p = commit->parents; p ; p = p->next) {
 		html("<tr><th>parent</th>"
 		     "<td colspan='2' class='sha1'>"
 		     "<a href='");
 		query = fmt("id=%s", sha1_to_hex(p->item->object.sha1));
 		html_attr(cgit_pageurl(cgit_query_repo, "commit", query));
-		htmlf("'>%s</a></td></tr>\n", 
+		htmlf("'>%s</a></td></tr>\n",
 		      sha1_to_hex(p->item->object.sha1));
 	}
 	if (cgit_repo->snapshots) {
 		htmlf("<tr><th>download</th><td colspan='2' class='sha1'><a href='");
 		filename = fmt("%s-%s.zip", cgit_query_repo, hex);
-		html_attr(cgit_pageurl(cgit_query_repo, "snapshot", 
+		html_attr(cgit_pageurl(cgit_query_repo, "snapshot",
 				       fmt("id=%s&name=%s", hex, filename)));
 		htmlf("'>%s</a></td></tr>", filename);
 	}
-	
 	html("</table>\n");
 	html("<div class='commit-subject'>");
 	html_txt(info->subject);
 	html("</div>");
 	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);
+	cgit_diff_commit(commit, print_filepair);
 	htmlf("<tr><td colspan='3' class='summary'>"
 	      "%d file%s changed</td></tr>\n", files, files > 1 ? "s" : "");
 	html("</table>");
 	cgit_free_commitinfo(info);
 }