Integrate diffstat with diff

This creates a generic diffstat function in ui-diff, which then is
invoked from cgit_print_diff with the result that both commit and diff-
view gets a diffstat.

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

1 files changed, 4 insertions, 142 deletions

diff --git a/ui-commit.c b/ui-commit.c
index 12a96fb..1aa5d34 100644
--- a/ui-commit.c
+++ b/ui-commit.c
@@ -11,131 +11,6 @@
 #include "ui-shared.h"
 #include "ui-diff.h"
 
-static int files, slots;
-static int total_adds, total_rems, max_changes;
-static int lines_added, lines_removed;
-static char *curr_rev;
-
-static 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 *class;
-
-	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", info->status);
-	}
-
-	html("<tr>");
-	htmlf("<td class='mode'>");
-	if (is_null_sha1(info->new_sha1)) {
-		cgit_print_filemode(info->old_mode);
-	} else {
-		cgit_print_filemode(info->new_mode);
-	}
-
-	if (info->old_mode != info->new_mode &&
-	    !is_null_sha1(info->old_sha1) &&
-	    !is_null_sha1(info->new_sha1)) {
-		html("<span class='modechange'>[");
-		cgit_print_filemode(info->old_mode);
-		html("]</span>");
-	}
-	htmlf("</td><td class='%s'>", class);
-	cgit_diff_link(info->new_path, NULL, NULL, ctx.qry.head, curr_rev,
-		       NULL, info->new_path);
-	if (info->status == DIFF_STATUS_COPIED || info->status == DIFF_STATUS_RENAMED)
-		htmlf(" (%s from %s)",
-		      info->status == DIFF_STATUS_COPIED ? "copied" : "renamed",
-		      info->old_path);
-	html("</td><td class='right'>");
-	htmlf("%d", info->added + info->removed);
-	html("</td><td class='graph'>");
-	htmlf("<table summary='file diffstat' width='%d%%'><tr>", (max_changes > 100 ? 100 : max_changes));
-	htmlf("<td class='add' style='width: %.1f%%;'/>",
-	      info->added * 100.0 / max_changes);
-	htmlf("<td class='rem' style='width: %.1f%%;'/>",
-	      info->removed * 100.0 / max_changes);
-	htmlf("<td class='none' style='width: %.1f%%;'/>",
-	      (max_changes - info->removed - info->added) * 100.0 / max_changes);
-	html("</tr></table></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(char *hex)
 {
 	struct commit *commit, *parent;
@@ -143,11 +18,9 @@ void cgit_print_commit(char *hex)
 	struct commit_list *p;
 	unsigned char sha1[20];
 	char *tmp;
-	int i;
 
 	if (!hex)
 		hex = ctx.qry.head;
-	curr_rev = hex;
 
 	if (get_sha1(hex, sha1)) {
 		cgit_print_error(fmt("Bad object id: %s", hex));
@@ -216,21 +89,10 @@ void cgit_print_commit(char *hex)
 	html("<div class='commit-msg'>");
 	html_txt(info->msg);
 	html("</div>");
-	if (!(commit->parents && commit->parents->next && commit->parents->next->next)) {
-		html("<div class='diffstat-header'>Diffstat</div>");
-		html("<table summary='diffstat' 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",
-		      files, total_adds, total_rems);
-		html("</div>");
-		cgit_print_diff(ctx.qry.sha1,
-				sha1_to_hex(commit->parents->item->object.sha1),
-				NULL);
+	if (!(commit->parents && commit->parents->next &&
+	      commit->parents->next->next)) {
+		tmp = sha1_to_hex(commit->parents->item->object.sha1);
+		cgit_print_diff(ctx.qry.sha1, tmp, NULL);
 	}
 	cgit_free_commitinfo(info);
 }