URL Encode

用VC实现post数据常常会遇到URL编码问题

在此封装一个工具类进行UTF8编码的转换

源码来自php source code

只是简单的封装给C++调用

//URL 编解码类//来自PHP源码class CRtUrlConv{public:static char *urlencode(const char *in_str ) { char *out_str; int in_str_len, out_str_len; in_str_len=strlen(in_str); out_str_len=0; out_str = php_url_encode( in_str , in_str_len, &out_str_len); return (char *) out_str; }static int urldecode(char *s){return php_url_decode(s);}private:static char *php_url_encode(const char *s , int len , int *new_length) { register unsigned char c; unsigned char *to, *start; unsigned char const *from, *end; from = (unsigned char *)s; end = (unsigned char *)s + len; start = to = new unsigned char[3*len+1];while (from < end) { c = *from++; if (c == ' ') { *to++ = '+'; #ifndef CHARSET_EBCDIC } else if ((c < '0' && c != '-' && c != '.') || (c < 'A' && c > '9') || (c > 'Z' && c < 'a' && c != '_') || (c > 'z')) { to[0] = '%'; to[1] = HEXCHARS[c >> 4]; to[2] = HEXCHARS[c & 15]; to += 3; #else /*CHARSET_EBCDIC*/ } else if (!isalnum(c) && strchr("_-.", c) == NULL) { /* Allow only alphanumeric chars and '_', '-', '.'; escape the rest */ to[0] = '%'; to[1] = HEXCHARS[os_toascii[c] >> 4]; to[2] = HEXCHARS[os_toascii[c] & 15]; to += 3; #endif /*CHARSET_EBCDIC*/ } else { *to++ = c; } } *to = 0; if (new_length) { *new_length = to - start; } return (char *) start; } static int php_url_decode(char *str) { int len; char *dest = str; char *data = str; len=strlen(str); while (len--) { if (*data == '+') { *dest = ' '; } else if (*data == '%' && len >= 2 && isxdigit((int) *(data + 1)) && isxdigit((int) *(data + 2))) { #ifndef CHARSET_EBCDIC *dest = (char) php_htoi(data + 1); #else *dest = os_toebcdic[(char) php_htoi(data + 1)]; #endif data += 2; len -= 2; } else { *dest = *data; } data++; dest++; } *dest = '/0'; return dest - str; }static int php_htoi(char *s) { int value; int c; c = ((unsigned char *)s)[0]; if (isupper(c)) c = tolower(c); value = (c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10) * 16; c = ((unsigned char *)s)[1]; if (isupper(c)) c = tolower(c); value += c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10; return (value); } static const char hexchars[];static const char HEXCHARS[];};const char CRtUrlConv::hexchars[] = "0123456789abcdef"; const char CRtUrlConv::HEXCHARS[] = "0123456789ABCDEF";}