[PATCHv3 11/13] strbuf: add strbuf_add*_urlencode
From: Jeff King <hidden>
Date: 2016-06-15 22:52:36
Subsystem:
the rest · Maintainer:
Linus Torvalds
This just follows the rfc3986 rules for percent-encoding url data into a strbuf. Signed-off-by: Jeff King <redacted> --- strbuf.c | 37 +++++++++++++++++++++++++++++++++++++ strbuf.h | 5 +++++ 2 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/strbuf.c b/strbuf.c
index a849705..ff0b96b 100644
--- a/strbuf.c
+++ b/strbuf.c@@ -411,3 +411,40 @@ void strbuf_add_lines(struct strbuf *out, const char *prefix, } strbuf_complete_line(out); } + +static int is_rfc3986_reserved(char ch) +{ + switch (ch) { + case '!': case '*': case '\'': case '(': case ')': case ';': + case ':': case '@': case '&': case '=': case '+': case '$': + case ',': case '/': case '?': case '#': case '[': case ']': + return 1; + } + return 0; +} + +static int is_rfc3986_unreserved(char ch) +{ + return isalnum(ch) || + ch == '-' || ch == '_' || ch == '.' || ch == '~'; +} + +void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, + int reserved) +{ + strbuf_grow(sb, len); + while (len--) { + char ch = *s++; + if (is_rfc3986_unreserved(ch) || + (!reserved && is_rfc3986_reserved(ch))) + strbuf_addch(sb, ch); + else + strbuf_addf(sb, "%%%02x", ch); + } +} + +void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, + int reserved) +{ + strbuf_add_urlencode(sb, s, strlen(s), reserved); +}
diff --git a/strbuf.h b/strbuf.h
index 08fc13d..fbf059f 100644
--- a/strbuf.h
+++ b/strbuf.h@@ -123,4 +123,9 @@ static inline void strbuf_complete_line(struct strbuf *sb) extern int strbuf_branchname(struct strbuf *sb, const char *name); extern int strbuf_check_branch_ref(struct strbuf *sb, const char *name); +extern void strbuf_add_urlencode(struct strbuf *, const char *, size_t, + int reserved); +extern void strbuf_addstr_urlencode(struct strbuf *, const char *, + int reserved); + #endif /* STRBUF_H */
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1.7.8.rc2.40.gaf387