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strbuf: give URL-encoding API a char predicate fn

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Allow callers to specify exactly what characters need to be URL-encoded
and which do not. This new API will be taken advantage of in a patch
later in this set.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Matthew DeVore <matvore@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Matthew DeVore
2019-06-27 15:54:11 -07:00
committed by Junio C Hamano
parent cf9ceb5a12
commit c2694952e3
4 changed files with 23 additions and 14 deletions
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15
strbuf.c
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@ -774,8 +774,10 @@ void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
}
}
static int is_rfc3986_reserved(char ch)
int is_rfc3986_reserved_or_unreserved(char ch)
{
if (is_rfc3986_unreserved(ch))
return 1;
switch (ch) {
case '!': case '*': case '\'': case '(': case ')': case ';':
case ':': case '@': case '&': case '=': case '+': case '$':
@ -785,20 +787,19 @@ static int is_rfc3986_reserved(char ch)
return 0;
}
static int is_rfc3986_unreserved(char ch)
int is_rfc3986_unreserved(char ch)
{
return isalnum(ch) ||
ch == '-' || ch == '_' || ch == '.' || ch == '~';
}
static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
int reserved)
char_predicate allow_unencoded_fn)
{
strbuf_grow(sb, len);
while (len--) {
char ch = *s++;
if (is_rfc3986_unreserved(ch) ||
(!reserved && is_rfc3986_reserved(ch)))
if (allow_unencoded_fn(ch))
strbuf_addch(sb, ch);
else
strbuf_addf(sb, "%%%02x", (unsigned char)ch);
@ -806,9 +807,9 @@ static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
}
void strbuf_addstr_urlencode(struct strbuf *sb, const char *s,
int reserved)
char_predicate allow_unencoded_fn)
{
strbuf_add_urlencode(sb, s, strlen(s), reserved);
strbuf_add_urlencode(sb, s, strlen(s), allow_unencoded_fn);
}
void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes)