diff --git a/ui-snapshot.c b/ui-snapshot.c
index f25613e..5372f5d 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -156,20 +156,31 @@ static const char *get_ref_from_filename(const char *url, const char *filename,
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;
}
diff --git a/ui-tree.c b/ui-tree.c
index c6159ec..553dbaa 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -25,11 +25,14 @@ static void print_text_buffer(char *buf, unsigned long size)
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>");
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