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-rw-r--r--ui-snapshot.c23
-rw-r--r--ui-tree.c13
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
@@ -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>");
'>Add htagml -iJune McEnroe 2021-01-12Render tag index in HTMLJune McEnroe 2021-01-12Add htagml -xJune McEnroe 2021-01-12Prevent matching the same tag twiceJune McEnroe 2021-01-12Process htagml file line by lineJune McEnroe This simplifies some things, adds support for line number tag definitions, and should enable combining htagml with other preprocessors in the future. 2021-01-12Split fields by tab onlyJune McEnroe Also don't fail hard on non-forward-search definitions. 2021-01-12List both Makefile and html.sh under README.7June McEnroe 2021-01-12Add htagml exampleJune McEnroe 2021-01-12Use mandoc and htagml for bin htmlJune McEnroe 2021-01-12Add htagmlJune McEnroe 2021-01-12Replace causal.agency with a simple mdoc pageJune McEnroe 2021-01-11Publish "Using vi"June McEnroe 2021-01-11Enable diff.colorMovedJune McEnroe 2021-01-10Set less search case-insensitiveJune McEnroe 2021-01-10Set EXINITJune McEnroe neovim is laggy as hell in my OpenBSD VM, so I switched to vi so I could type without getting frustrated. 2021-01-09Add c -t flag to print expression typeJune McEnroe Also add missing float case. 2021-01-05Update taglineJune McEnroe