html.c: add html_url_path

This function can be used to generate properly escaped path-components
for links.

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

2 files changed, 17 insertions, 0 deletions

diff --git a/html.c b/html.c
index 167127f..d7d9fd7 100644
--- a/html.c
+++ b/html.c
@@ -128,6 +128,22 @@ void html_attr(char *txt)
                 html(txt);
 }
 
+void html_url_path(char *txt)
+{
+        char *t = txt;
+        while(t && *t){
+                int c = *t;
+                if (c=='"' || c=='#' || c=='\'' || c=='?') {
+                        write(htmlfd, txt, t - txt);
+                        write(htmlfd, fmt("%%%2x", c), 3);
+                        txt = t+1;
+                }
+                t++;
+        }
+        if (t!=txt)
+                html(txt);
+}
+
 void html_url_arg(char *txt)
 {
         char *t = txt;
diff --git a/html.h b/html.h
index 038cf60..a55d4b2 100644
--- a/html.h
+++ b/html.h
@@ -10,6 +10,7 @@ extern void html_status(int code, const char *msg, int more_headers);
 extern void html_txt(char *txt);
 extern void html_ntxt(int len, char *txt);
 extern void html_attr(char *txt);
+extern void html_url_path(char *txt);
 extern void html_url_arg(char *txt);
 extern void html_hidden(char *name, char *value);
 extern void html_option(char *value, char *text, char *selected_value);