117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
//#define _GNU_SOURCE
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "xmlrpc_config.h" /* For HAVE_ASPRINTF, __inline__ */
|
|
#include "xmlrpc-c/string_int.h"
|
|
|
|
|
|
|
|
static __inline__ void
|
|
simpleVasprintf(char ** const retvalP,
|
|
const char * const fmt,
|
|
va_list varargs) {
|
|
/*----------------------------------------------------------------------------
|
|
This is a poor man's implementation of vasprintf(), of GNU fame.
|
|
-----------------------------------------------------------------------------*/
|
|
size_t const initialSize = 4096;
|
|
char * result;
|
|
|
|
result = malloc(initialSize);
|
|
if (result != NULL) {
|
|
size_t bytesNeeded;
|
|
bytesNeeded = XMLRPC_VSNPRINTF(result, initialSize, fmt, varargs);
|
|
if (bytesNeeded > initialSize) {
|
|
free(result);
|
|
result = malloc(bytesNeeded);
|
|
if (result != NULL)
|
|
XMLRPC_VSNPRINTF(result, bytesNeeded, fmt, varargs);
|
|
} else if (bytesNeeded == initialSize) {
|
|
if (result[initialSize-1] != '\0') {
|
|
/* This is one of those old systems where vsnprintf()
|
|
returns the number of bytes it used, instead of the
|
|
number that it needed, and it in fact needed more than
|
|
we gave it. Rather than mess with this highly unlikely
|
|
case (old system and string > 4095 characters), we just
|
|
treat this like an out of memory failure.
|
|
*/
|
|
free(result);
|
|
result = NULL;
|
|
}
|
|
}
|
|
}
|
|
*retvalP = result;
|
|
}
|
|
|
|
|
|
|
|
const char * const xmlrpc_strsol = "[insufficient memory to build string]";
|
|
|
|
|
|
|
|
void
|
|
xmlrpc_vasprintf(const char ** const retvalP,
|
|
const char * const fmt,
|
|
va_list varargs) {
|
|
|
|
char * string;
|
|
|
|
#if HAVE_ASPRINTF
|
|
vasprintf(&string, fmt, varargs);
|
|
#else
|
|
simpleVasprintf(&string, fmt, varargs);
|
|
#endif
|
|
|
|
if (string == NULL)
|
|
*retvalP = xmlrpc_strsol;
|
|
else
|
|
*retvalP = string;
|
|
}
|
|
|
|
|
|
|
|
void GNU_PRINTF_ATTR(2,3)
|
|
xmlrpc_asprintf(const char ** const retvalP, const char * const fmt, ...) {
|
|
|
|
va_list varargs; /* mysterious structure used by variable arg facility */
|
|
|
|
va_start(varargs, fmt); /* start up the mysterious variable arg facility */
|
|
|
|
xmlrpc_vasprintf(retvalP, fmt, varargs);
|
|
|
|
va_end(varargs);
|
|
}
|
|
|
|
|
|
|
|
const char *
|
|
xmlrpc_strdupnull(const char * const string) {
|
|
|
|
if (string)
|
|
return strdup(string);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
xmlrpc_strfree(const char * const string) {
|
|
|
|
if (string != xmlrpc_strsol)
|
|
free((void *)string);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
xmlrpc_strfreenull(const char * const string) {
|
|
|
|
if (string)
|
|
xmlrpc_strfree(string);
|
|
}
|
|
|
|
|
|
|