commit 70787254b270b1505aa8427813f64131be5df86c
author Jeff Smith <whydoubt@gmail.com> Sun Oct 01 23:39:05 2017 -0500
committer John Keeping <john@keeping.me.uk> Tue Oct 03 19:19:34 2017 +0100
tree 5a6d23b8186d4d9d7e2bd5b84d3c3d092edd4e30
parent 3b485cc5422f800d142c7023295e82c0a1c10b19

html: html_ntxt with no ellipsis

For implementing a ui-blame page, there is need for a function that
outputs a selection from a block of text, transformed for HTML output,
but with no further modifications or additions.

Signed-off-by: Jeff Smith <whydoubt@gmail.com>
Reviewed-by: John Keeping <john@keeping.me.uk>

html.c

diff --git a/html.c b/html.c
index e7e6e07..7f81965 100644
--- a/html.c
+++ b/html.c
@@ -124,29 +124,20 @@
 
 void html_txt(const char *txt)
 {
-	const char *t = txt;
-	while (t && *t) {
-		int c = *t;
-		if (c == '<' || c == '>' || c == '&') {
-			html_raw(txt, t - txt);
-			if (c == '>')
-				html("&gt;");
-			else if (c == '<')
-				html("&lt;");
-			else if (c == '&')
-				html("&amp;");
-			txt = t + 1;
-		}
-		t++;
-	}
-	if (t != txt)
-		html(txt);
+	if (txt)
+		html_ntxt(txt, strlen(txt));
 }
 
-void html_ntxt(int len, const char *txt)
+ssize_t html_ntxt(const char *txt, size_t len)
 {
 	const char *t = txt;
-	while (t && *t && len--) {
+	ssize_t slen;
+
+	if (len > SSIZE_MAX)
+		return -1;
+
+	slen = (ssize_t) len;
+	while (t && *t && slen--) {
 		int c = *t;
 		if (c == '<' || c == '>' || c == '&') {
 			html_raw(txt, t - txt);
@@ -162,8 +153,7 @@
 	}
 	if (t != txt)
 		html_raw(txt, t - txt);
-	if (len < 0)
-		html("...");
+	return slen;
 }
 
 void html_attrf(const char *fmt, ...)