encode

相关RFC：http://curl.haxx.se/rfc/rfc2396.txt /* --------------------------------------------------------------------------- * Encode URL by converting special characters to %XX (where XX are hexadecimal digits) * Don't forget to free the return value. */ char *urlencode(const char *url) { #define COPY_TO_ENCODE_URL(c) \         if (outlen < pos) { \             outlen += 10; \       [...]