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Code Issues Releases Wiki Activity

the new escape/unescape function setup

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This commit is contained in:
Daniel Stenberg 2001-03-22 11:40:58 +00:00
parent c23df41d83
commit f8d883355d
3 changed files with 66 additions and 61 deletions
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5
include/curl/curl.h
View File

@ -475,6 +475,11 @@ char *curl_getenv(char *variable);
/* Returns a static ascii string of the libcurl version. */
char *curl_version(void);
/* Escape and unescape URL encoding in strings. The functions return a new
* allocated string or NULL if an error occurred. */
char *curl_escape(char *string, int length);
char *curl_unescape(char *string, int length);
/* This is the version number */
#define LIBCURL_VERSION "7.7-beta5"
#define LIBCURL_VERSION_NUM 0x070700

118
lib/escape.c
View File

@ -36,74 +36,74 @@
#include "memdebug.h"
#endif
char *curl_escape(char *string)
char *curl_escape(char *string, int length)
{
int alloc=strlen(string)+1;
char *ns = malloc(alloc);
unsigned char in;
int newlen = alloc;
int index=0;
int alloc = (length?length:strlen(string))+1;
char *ns = malloc(alloc);
unsigned char in;
int newlen = alloc;
int index=0;
while(*string) {
in = *string;
if(' ' == in)
ns[index++] = '+';
else if(!(in >= 'a' && in <= 'z') &&
!(in >= 'A' && in <= 'Z') &&
!(in >= '0' && in <= '9')) {
/* encode it */
newlen += 2; /* the size grows with two, since this'll become a %XX */
if(newlen > alloc) {
alloc *= 2;
ns = realloc(ns, alloc);
if(!ns)
return NULL;
}
sprintf(&ns[index], "%%%02X", in);
index+=3;
while(length--) {
in = *string;
if(' ' == in)
ns[index++] = '+';
else if(!(in >= 'a' && in <= 'z') &&
!(in >= 'A' && in <= 'Z') &&
!(in >= '0' && in <= '9')) {
/* encode it */
newlen += 2; /* the size grows with two, since this'll become a %XX */
if(newlen > alloc) {
alloc *= 2;
ns = realloc(ns, alloc);
if(!ns)
return NULL;
}
else {
/* just copy this */
ns[index++]=in;
}
string++;
}
ns[index]=0; /* terminate it */
return ns;
sprintf(&ns[index], "%%%02X", in);
index+=3;
}
else {
/* just copy this */
ns[index++]=in;
}
string++;
}
ns[index]=0; /* terminate it */
return ns;
}
char *curl_unescape(char *string, int length)
{
int alloc = (length?length:strlen(string))+1;
char *ns = malloc(alloc);
unsigned char in;
int index=0;
unsigned int hex;
char querypart=FALSE; /* everything to the right of a '?' letter is
the "query part" where '+' should become ' '.
RFC 2316, section 3.10 */
int alloc = (length?length:strlen(string))+1;
char *ns = malloc(alloc);
unsigned char in;
int index=0;
unsigned int hex;
char querypart=FALSE; /* everything to the right of a '?' letter is
the "query part" where '+' should become ' '.
RFC 2316, section 3.10 */
while(--alloc > 0) {
in = *string;
if(querypart && ('+' == in))
in = ' ';
else if(!querypart && ('?' == in)) {
/* we have "walked in" to the query part */
querypart=TRUE;
}
else if('%' == in) {
/* encoded part */
if(sscanf(string+1, "%02X", &hex)) {
in = hex;
string+=2;
alloc-=2;
}
while(--alloc > 0) {
in = *string;
if(querypart && ('+' == in))
in = ' ';
else if(!querypart && ('?' == in)) {
/* we have "walked in" to the query part */
querypart=TRUE;
}
else if('%' == in) {
/* encoded part */
if(sscanf(string+1, "%02X", &hex)) {
in = hex;
string+=2;
alloc-=2;
}
}
ns[index++] = in;
string++;
}
ns[index]=0; /* terminate it */
return ns;
ns[index++] = in;
string++;
}
ns[index]=0; /* terminate it */
return ns;
}

2
lib/escape.h
View File

@ -26,7 +26,7 @@
/* Escape and unescape URL encoding in strings. The functions return a new
* allocated string or NULL if an error occurred. */
char *curl_escape(char *string);
char *curl_escape(char *string, int length);
char *curl_unescape(char *string, int length);
#endif