Function strbuf_add_percentencode

strbuf.c:502–517

#define URL_UNSAFE_CHARS " <>\"%{}|\\^`:?#[]@!$&'()*+,;="

void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags)
{
	size_t i, len = strlen(src);

	for (i = 0; i < len; i++) {
		unsigned char ch = src[i];
		if (ch <= 0x1F || ch >= 0x7F ||
		    (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) ||
		    ((flags & STRBUF_ENCODE_HOST_AND_PORT) ?
		     !isalnum(ch) && !strchr("-.:[]", ch) :
		     !!strchr(URL_UNSAFE_CHARS, ch)))
			strbuf_addf(dst, "%%%02X", (unsigned char)ch);
		else
			strbuf_addch(dst, ch);
	}
}

size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
{