5 files changed, 130 insertions, 33 deletions

diff --git a/Makefile b/Makefile
index ccc7582..ea4d818 100644
--- a/Makefile
+++ b/Makefile
@@ -1,79 +1,80 @@
 CGIT_VERSION = 0.3
 
 prefix = /var/www/htdocs/cgit
 
 SHA1_HEADER = <openssl/sha.h>
 
 CACHE_ROOT = /var/cache/cgit
 EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
 OBJECTS = shared.o cache.o parsing.o html.o ui-shared.o ui-repolist.o \
 	ui-summary.o ui-log.o ui-view.o ui-tree.o ui-commit.o ui-diff.o \
 	ui-snapshot.o ui-blob.o
 
 CFLAGS += -Wall
 
 ifdef DEBUG
 	CFLAGS += -g
 endif
 
 CFLAGS += -Igit -DSHA1_HEADER='$(SHA1_HEADER)'
 
 
 #
 # If make is run on a nongit platform, we need to get the git sources as a tarball.
 # But there is currently no recent enough tarball available on kernel.org, so download
 # a zipfile from hjemli.net instead
 #
 GITVER = $(shell git version 2>/dev/null || echo nogit)
 ifeq ($(GITVER),nogit)
 GITURL = http://hjemli.net/git/git/snapshot/?id=v1.5.2-rc2
 INITGIT = test -e git/git.c || (curl "$(GITURL)" > tmp.zip && unzip tmp.zip)
 else
 INITGIT = ./submodules.sh -i
 endif
 
 
 #
 # basic build rules
 #
 all: cgit
 
 cgit: cgit.c cgit.h $(OBJECTS)
 	$(CC) $(CFLAGS) -DCGIT_VERSION='"$(CGIT_VERSION)"' cgit.c -o cgit \
 		$(OBJECTS) $(EXTLIBS)
 
 $(OBJECTS): cgit.h git/libgit.a
 
 git/libgit.a:
 	$(INITGIT)
 	$(MAKE) -C git
 
 #
 # phony targets
 #
 install: all clean-cache
 	mkdir -p $(prefix)
 	install cgit $(prefix)/cgit.cgi
 	install cgit.css $(prefix)/cgit.css
+	install add.png del.png $(prefix)/
 
 clean-cgit:
 	rm -f cgit *.o
 
 distclean-cgit: clean-cgit
 	git clean -d -x
 
 clean-sub:
 	$(MAKE) -C git clean
 
 distclean-sub: clean-sub
 	$(shell cd git && git clean -d -x)
 
 clean-cache:
 	rm -rf $(CACHE_ROOT)/*
 
 clean: clean-cgit clean-sub
 
 distclean: distclean-cgit distclean-sub
 
 .PHONY: all install clean clean-cgit clean-sub clean-cache \
 	distclean distclean-cgit distclean-sub
diff --git a/add.png b/add.png
new file mode 100644
index 0000000..c550388
--- a/dev/null
+++ b/add.png
diff --git a/cgit.css b/cgit.css
index cded981..b736b19 100644
--- a/cgit.css
+++ b/cgit.css
@@ -1,296 +1,322 @@
 body {
 	font-family: arial;
 	font-size: 11pt;
 	background: white;
 }
 
 body, table {
 	padding: 0em;
 	margin: 0em;
 }
 
 table {
       border-collapse: collapse;
 }
 
 h2 {
 	font-size: 120%;
 	font-weight: bold;
 	margin-top: 0em;
 	margin-bottom: 0.25em;
 }
 
 h3 {
 	margin-top: 0em;
 	font-size: 100%;
 	font-weight: normal;
 }
 
+h4 {
+	margin-top: 1.5em;
+	margin-bottom: 0.1em;
+	font-size: 100%;
+	font-weight: bold;
+}
+
 a {
 	color: blue;
 	text-decoration: none;
 }
 
 a:hover {
 	text-decoration: underline;
 }
 
 table.list {
 	border: none;
 	border-collapse: collapse;
 }
 
 table.list tr {
 	background: white;
 }
 
 table.list tr:hover {
 	background: #eee;
 }
 
 table.list tr.nohover:hover {
 	background: white;
 }
 
 table.list th {
 	font-weight: normal;
 	border-bottom: solid 1px #777;
 	padding: 0.1em 0.5em 0.1em 0.5em;
 	vertical-align: baseline;
 }
 
 table.list td {
 	border: none;
 	padding: 0.1em 0.5em 0.1em 0.5em;
 }
 
 img {
 	border: none;
 }
 
 table#layout {
 	width: 100%;
 	border-collapse: collapse;
 	margin: 0px;
 }
 
 td#header, td#logo {
 	color: #666;
 	background-color: #ddd;
 	border-bottom: solid 1px #000;
 }
 
 td#header {
 	font-size: 150%;
 	font-weight: bold;
 	padding: 0.2em 0.5em;
 	vertical-align: text-bottom;
 }
 
 td#logo {
 	text-align: right;
 	vertical-align: middle;
 	padding-right: 0.5em;
 }
 
 td#crumb, td#search {
 	color: #ccc;
 	border-top: solid 3px #555;
 	background-color: #666;
 	border-bottom: solid 1px #333;
 	padding: 2px 1em;
 }
 
 td#crumb {
 	font-weight: bold;
 }
 
 td#crumb a {
 	color: #ccc;
 }
 
 td#crumb a:hover {
 	color: #eee;
 }
 
 td#search {
 	text-align: right;
 	vertical-align: center;
 	padding-right: 0.5em;
 }
 
 td#search form {
 	margin: 0px;
 	padding: 0px;
 }
 
 td#search input {
 	font-size: 9pt;
 	padding: 0px;
 	width: 10em;
 	border: solid 1px #333;
 	color: #333;
 	background-color: #fff;
 }
 
 td#summary {
 	vertical-align: top;
 	padding-bottom: 1em;
 }
 
 td#archivelist {
 	padding-bottom: 1em;
 }
 
 td#archivelist table {
 	float: right;
 	border-collapse: collapse;
 	border: solid 1px #777;
 }
 
 td#archivelist table th {
 	background-color: #ccc;
 }
 
 td#content {
 	padding: 1em 0.5em;
 }
 
 div#blob {
 	border: solid 1px black;
 }
 
 div.error {
 	color: red;
 	font-weight: bold;
 	margin: 1em 2em;
 }
 
 td.ls-blob, td.ls-dir, td.ls-mod {
 	font-family: monospace;
 }
 
 div.ls-dir a {
 	font-weight: bold;
 }
 
 th.filesize, td.filesize {
 	text-align: right;
 }
 
 td.filesize {
 	font-family: monospace;
 }
 
 td.filemode {
 	font-family: monospace;
 }
 
 td.blob {
 	white-space: pre;
 	font-family: monospace;
 	background-color: white;
 }
 
 table.nowrap td {
 	white-space: nowrap;
 }
 
 table.commit-info {
 	border-collapse: collapse;
 	margin-top: 1.5em;
 }
 
 table.commit-info th {
 	text-align: left;
 	font-weight: normal;
 	padding: 0.1em 1em 0.1em 0.1em;
 }
 
 table.commit-info td {
 	font-weight: normal;
 	padding: 0.1em 1em 0.1em 0.1em;
 }
 
 div.commit-subject {
 	font-weight: bold;
 	font-size: 125%;
 	margin: 1.5em 0em 0.5em 0em;
 	padding: 0em;
 }
 
 div.commit-msg {
 	white-space: pre;
 	font-family: monospace;
 }
 
 table.diffstat {
 	border-collapse: collapse;
 	margin-top: 1.5em;
+	width: 100%;
+	border: solid 1px #aaa;
+}
+
+table.diffstat tr:hover {
+	background-color: #eee;
 }
 
 table.diffstat th {
 	font-weight: normal;
 	text-align: left;
 	text-decoration: underline;
 	padding: 0.1em 1em 0.1em 0.1em;
 	font-size: 100%;
 }
 
 table.diffstat td {
-	padding: 0.1em 1em 0.1em 0.1em;
+	padding: 0.2em 0.2em 0.1em 0.1em;
 	font-size: 100%;
+	border: none;
+	border-top: solid 1px #aaa;
+	border-bottom: solid 1px #aaa;
 }
 
 table.diffstat td span.modechange {
 	padding-left: 1em;
 	color: red;
 }
 
 table.diffstat td.add a {
 	color: green;
 }
 
 table.diffstat td.del a {
 	color: red;
 }
 
 table.diffstat td.upd a {
 	color: blue;
 }
 
-table.diffstat td.summary {
+table.diffstat td.graph {
+	width: 75%;
+	vertical-align: center;
+}
+
+table.diffstat td.graph img {
+	border: none;
+	height: 11pt;
+}
+
+div.diffstat-summary {
 	color: #888;
 	padding-top: 0.5em;
 }
 
 table.diff td {
 	border: solid 1px black;
 	font-family: monospace;
 	white-space: pre;
 }
 
 table.diff td div.hunk {
 	background: #ccc;
 }
 
 table.diff td div.add {
 	color: green;
 }
 
 table.diff td div.del {
 	color: red;
 }
 
 .sha1 {
 	font-family: courier;
 	font-size: 90%;
 }
 
 .left {
 	text-align: left;
 }
 
 .right {
 	text-align: right;
 }
diff --git a/del.png b/del.png
new file mode 100644
index 0000000..5c73e82
--- a/dev/null
+++ b/del.png
diff --git a/ui-commit.c b/ui-commit.c
index f1a22d3..ce33cf9 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -1,158 +1,228 @@
 /* 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;
+int files = 0, slots = 0;
+int total_adds = 0, total_rems = 0, max_changes = 0;
+int lines_added, lines_removed;
 
-void print_filepair(struct diff_filepair *pair)
+struct fileinfo {
+	char status;
+	unsigned char old_sha1[20];
+	unsigned char new_sha1[20];
+	unsigned short old_mode;
+	unsigned short new_mode;
+	char *old_path;
+	char *new_path;
+	unsigned int added;
+	unsigned int removed;
+} *items;
+
+
+void print_fileinfo(struct fileinfo *info)
 {
-	char *query;
+	char *query, *query2;
 	char *class;
+	double width;
 
-	switch (pair->status) {
+	switch (info->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);
+		die("bug: unhandled diff status %c", info->status);
 	}
 
 	html("<tr>");
 	htmlf("<td class='mode'>");
-	if (is_null_sha1(pair->two->sha1)) {
-		html_filemode(pair->one->mode);
+	if (is_null_sha1(info->new_sha1)) {
+		html_filemode(info->old_mode);
 	} else {
-		html_filemode(pair->two->mode);
+		html_filemode(info->new_mode);
 	}
 
-	if (pair->one->mode != pair->two->mode &&
-	    !is_null_sha1(pair->one->sha1) &&
-	    !is_null_sha1(pair->two->sha1)) {
+	if (info->old_mode != info->new_mode &&
+	    !is_null_sha1(info->old_sha1) &&
+	    !is_null_sha1(info->new_sha1)) {
 		html("<span class='modechange'>[");
-		html_filemode(pair->one->mode);
+		html_filemode(info->old_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));
+	query = fmt("id=%s&id2=%s", sha1_to_hex(info->old_sha1),
+		    sha1_to_hex(info->new_sha1));
 	html_link_open(cgit_pageurl(cgit_query_repo, "diff", 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 ?
+	if (info->status == DIFF_STATUS_COPIED ||
+	    info->status == DIFF_STATUS_RENAMED) {
+		html_txt(info->new_path);
+		htmlf("</a> (%s from ", info->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),
+		query2 = fmt("id=%s", sha1_to_hex(info->old_sha1));
+		html_link_open(cgit_pageurl(cgit_query_repo, "view", query2),
 			       NULL, NULL);
-		html_txt(pair->one->path);
+		html_txt(info->old_path);
 		html("</a>)");
 	} else {
-		html_txt(pair->two->path);
+		html_txt(info->new_path);
 		html("</a>");
 	}
-	html("<td>");
+	html("</td><td class='right'>");
+	htmlf("%d", info->added + info->removed);
 
-	//TODO: diffstat graph
+	html("</td><td class='graph'>");
+	width = (info->added + info->removed) * 100.0 / max_changes;
+	if (width < 0.1)
+		width = 0.1;
+	html_link_open(cgit_pageurl(cgit_query_repo, "diff", query),
+		       NULL, NULL);
+	htmlf("<img src='/cgit/add.png' style='width: %.1f%%;'/>",
+	      info->added * width / (info->added + info->removed));
+	htmlf("<img src='/cgit/del.png' style='width: %.1f%%;'/>",
+	      info->removed * width / (info->added + info->removed));
+	html("</a></td></tr>\n");
+}
 
-	html("</td></tr>\n");
+void cgit_count_diff_lines(char *line, int len)
+{
+	if (line && (len > 0)) {
+		if (line[0] == '+')
+			lines_added++;
+		else if (line[0] == '-')
+			lines_removed++;
+	}
+}
+
+void inspect_filepair(struct diff_filepair *pair)
+{
 	files++;
+	lines_added = 0;
+	lines_removed = 0;
+	cgit_diff_files(pair->one->sha1, pair->two->sha1, cgit_count_diff_lines);
+	if (files >= slots) {
+		if (slots == 0)
+			slots = 4;
+		else
+			slots = slots * 2;
+		items = xrealloc(items, slots * sizeof(struct fileinfo));
+	}
+	items[files-1].status = pair->status;
+	hashcpy(items[files-1].old_sha1, pair->one->sha1);
+	hashcpy(items[files-1].new_sha1, pair->two->sha1);
+	items[files-1].old_mode = pair->one->mode;
+	items[files-1].new_mode = pair->two->mode;
+	items[files-1].old_path = xstrdup(pair->one->path);
+	items[files-1].new_path = xstrdup(pair->two->path);
+	items[files-1].added = lines_added;
+	items[files-1].removed = lines_removed;
+	if (lines_added + lines_removed > max_changes)
+		max_changes = lines_added + lines_removed;
+	total_adds += lines_added;
+	total_rems += lines_removed;
 }
 
+
 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;
+	int i;
 
 	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",
 		      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",
 				       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_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>");
+	if (!(commit->parents && commit->parents->next && commit->parents->next->next)) {
+		html("<table class='diffstat'>");
+		max_changes = 0;
+		cgit_diff_commit(commit, inspect_filepair);
+		for(i = 0; i<files; i++)
+			print_fileinfo(&items[i]);
+		html("</table>");
+		html("<div class='diffstat-summary'>");
+		htmlf("%d files changed, %d insertions, %d deletions\n",
+		      files, total_adds, total_rems);
+		html("</div>");
+	}
 	cgit_free_commitinfo(info);
 }