credential: handle invalid arguments earlier

diff --git a/quote.c b/quote.c
index fe884d24521f91a0f1f30b3cf5f08734bab7bd31..53b98a5b840d8fd4d73fab27348b657501923dca 100644 (file)
--- a/quote.c
+++ b/quote.c
@@ -43,6 +43,19 @@ void sq_quote_buf(struct strbuf *dst, const char *src)
        free(to_free);
 }
 
+void sq_quotef(struct strbuf *dst, const char *fmt, ...)
+{
+       struct strbuf src = STRBUF_INIT;
+
+       va_list ap;
+       va_start(ap, fmt);
+       strbuf_vaddf(&src, fmt, ap);
+       va_end(ap);
+
+       sq_quote_buf(dst, src.buf);
+       strbuf_release(&src);
+}
+
 void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen)
 {
        int i;
@@ -440,3 +453,40 @@ void tcl_quote_buf(struct strbuf *sb, const char *src)
        }
        strbuf_addch(sb, '"');
 }
+
+void basic_regex_quote_buf(struct strbuf *sb, const char *src)
+{
+       char c;
+
+       if (*src == '^') {
+               /* only beginning '^' is special and needs quoting */
+               strbuf_addch(sb, '\\');
+               strbuf_addch(sb, *src++);
+       }
+       if (*src == '*')
+               /* beginning '*' is not special, no quoting */
+               strbuf_addch(sb, *src++);
+
+       while ((c = *src++)) {
+               switch (c) {
+               case '[':
+               case '.':
+               case '\\':
+               case '*':
+                       strbuf_addch(sb, '\\');
+                       strbuf_addch(sb, c);
+                       break;
+
+               case '$':
+                       /* only the end '$' is special and needs quoting */
+                       if (*src == '\0')
+                               strbuf_addch(sb, '\\');
+                       strbuf_addch(sb, c);
+                       break;
+
+               default:
+                       strbuf_addch(sb, c);
+                       break;
+               }
+       }
+}