测试环境：freebsd
补上urldecode
#include <stdio.h>
#include <sys/types.h>
#include <regex.h>
#define safe_emalloc(nmemb, size, offset) malloc((nmemb) * (size) + (offset))
char *test( char * src);
char *urlencode( char *in_str );
char *php_url_encode(char *s , int len , int *new_length);
int php_url_decode(char *str);
static int php_htoi(char *s);
static char hexchars[] = "0123456789abcdef";
static char HEXCHARS[] = "0123456789ABCDEF";
/* 主程序 */
int main()
{
char *p;
char *d;
int di;
char s[10]="ehd你好";
p=urlencode(s);
printf( " %s \n" , p );
di=php_url_decode(p);
printf( " %s \n" , p );
char fee[10]="000500";
int i,n;
n=strlen(fee);
for (i=0;i<n ;i++ )
{
if(fee[i]!='0')
{
break;
}
}
printf( "%s \n" , &fee[i] );
}
char *urlencode( 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;
}
char *php_url_encode(char *s , int len , int *new_length)
{
register unsigned char c;
unsigned char *to, *start;
unsigned char const *from, *end;
from = s;
end = s + len;
start = to = (unsigned char *) safe_emalloc(3, len, 1);
while (from < end) {
c = *from++;
//printf("%d\n" , c);
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;
}
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);
}
/*
gcc test.c -o test
./test
*/
调试一直这个错误
conflicting types
错误：
test.c:22: error: conflicting types for 'urlencode'
test.c:18: error: previous implicit declaration of 'urlencode' was here
原来是因为没有先做函数声明，而函数位于main()之后。
在main函数前声明了函数原型后，一切ok.
