Merge branch 'stable'

2 files changed, 25 insertions, 11 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index f25613e..5372f5d 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -135,60 +135,71 @@ static const char *get_ref_from_filename(const char *url, const char *filename,
 	snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0';
 	fprintf(stderr, "snapshot=%s\n", snapshot);
 
 	if (get_sha1(snapshot, sha1) == 0)
 		return snapshot;
 
 	reponame = cgit_repobasename(url);
 	fprintf(stderr, "reponame=%s\n", reponame);
 	if (prefixcmp(snapshot, reponame) == 0) {
 		snapshot += strlen(reponame);
 		while (snapshot && (*snapshot == '-' || *snapshot == '_'))
 			snapshot++;
 	}
 
 	if (get_sha1(snapshot, sha1) == 0)
 		return snapshot;
 
 	snapshot = fmt("v%s", snapshot);
 	if (get_sha1(snapshot, sha1) == 0)
 		return snapshot;
 
 	return NULL;
 }
 
+void show_error(char *msg)
+{
+	ctx.page.mimetype = "text/html";
+	cgit_print_http_headers(&ctx);
+	cgit_print_docstart(&ctx);
+	cgit_print_pageheader(&ctx);
+	cgit_print_error(msg);
+	cgit_print_docend();
+}
+
 void cgit_print_snapshot(const char *head, const char *hex,
 			 const char *filename, int snapshots, int dwim)
 {
 	const struct cgit_snapshot_format* f;
 	char *prefix = NULL;
 
+	if (!filename) {
+		show_error("No snapshot name specified");
+		return;
+	}
+
 	f = get_format(filename);
 	if (!f) {
-		ctx.page.mimetype = "text/html";
-		cgit_print_http_headers(&ctx);
-		cgit_print_docstart(&ctx);
-		cgit_print_pageheader(&ctx);
-		cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
-		cgit_print_docend();
+		show_error(xstrdup(fmt("Unsupported snapshot format: %s",
+				       filename)));
 		return;
 	}
 
 	if (!hex && dwim) {
 		hex = get_ref_from_filename(ctx.repo->url, filename, f);
 		if (hex == NULL) {
 			html_status(404, "Not found", 0);
 			return;
 		}
 		prefix = xstrdup(filename);
 		prefix[strlen(filename) - strlen(f->suffix)] = '\0';
 	}
 
 	if (!hex)
 		hex = head;
 
 	if (!prefix)
 		prefix = xstrdup(cgit_repobasename(ctx.repo->url));
 
 	make_snapshot(f, hex, prefix, filename);
 	free(prefix);
 }
diff --git a/ui-tree.c b/ui-tree.c
index c6159ec..553dbaa 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -4,53 +4,56 @@
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include <ctype.h>
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
 
 char *curr_rev;
 char *match_path;
 int header = 0;
 
 static void print_text_buffer(char *buf, unsigned long size)
 {
 	unsigned long lineno, idx;
 	const char *numberfmt =
 		"<a class='no' id='n%1$d' name='n%1$d' href='#n%1$d'>%1$d</a>\n";
 
 	html("<table summary='blob content' class='blob'>\n");
 	html("<tr><td class='linenumbers'><pre>");
 	idx = 0;
 	lineno = 0;
-	htmlf(numberfmt, ++lineno);
-	while(idx < size - 1) { // skip absolute last newline
-		if (buf[idx] == '\n')
-			htmlf(numberfmt, ++lineno);
-		idx++;
+
+	if (size) {
+		htmlf(numberfmt, ++lineno);
+		while(idx < size - 1) { // skip absolute last newline
+			if (buf[idx] == '\n')
+				htmlf(numberfmt, ++lineno);
+			idx++;
+		}
 	}
 	html("</pre></td>\n");
 	html("<td class='lines'><pre><code>");
 	html_txt(buf);
 	html("</code></pre></td></tr></table>\n");
 }
 
 #define ROWLEN 32
 
 static void print_binary_buffer(char *buf, unsigned long size)
 {
 	unsigned long ofs, idx;
 	static char ascii[ROWLEN + 1];
 
 	html("<table summary='blob content' class='bin-blob'>\n");
 	html("<tr><th>ofs</th><th>hex dump</th><th>ascii</th></tr>");
 	for (ofs = 0; ofs < size; ofs += ROWLEN, buf += ROWLEN) {
 		htmlf("<tr><td class='right'>%04x</td><td class='hex'>", ofs);
 		for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)
 			htmlf("%*s%02x",
 			      idx == 16 ? 4 : 1, "",
 			      buf[idx] & 0xff);
 		html(" </td><td class='hex'>");
 		for (idx = 0; idx < ROWLEN && ofs + idx < size; idx++)