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/* dlutils.c - handy functions and definitions for dl_*.xs files
*
* Currently this file is simply #included into dl_*.xs/.c files.
* It should really be split into a dlutils.h and dlutils.c
*
*/
/* pointer to allocated memory for last error message */
static char *LastError = (char*)NULL;
#ifdef DEBUGGING
/* currently not connected to $DynaLoader::dl_error but should be */
static int dl_debug = 0;
#define DLDEBUG(level,code) if(dl_debug>=level){ code; }
#else
#define DLDEBUG(level,code)
#endif
static void
dl_generic_private_init() /* called by dl_*.xs dl_private_init() */
{
#ifdef DEBUGGING
char *perl_dl_debug = getenv("PERL_DL_DEBUG");
if (perl_dl_debug)
dl_debug = atoi(perl_dl_debug);
#endif
}
/* SaveError() takes printf style args and saves the result in LastError */
#ifdef STANDARD_C
static void
SaveError(char* pat, ...)
#else
/*VARARGS0*/
static void
SaveError(pat, va_alist)
char *pat;
va_dcl
#endif
{
va_list args;
char *message;
int len;
/* This code is based on croak/warn but I'm not sure where mess() */
/* gets its buffer space from! */
#ifdef I_STDARG
va_start(args, pat);
#else
va_start(args);
#endif
message = mess(pat, &args);
va_end(args);
len = strlen(message) + 1 ; /* include terminating null char */
/* Allocate some memory for the error message */
if (LastError)
LastError = (char*)saferealloc(LastError, len) ;
else
LastError = safemalloc(len) ;
/* Copy message into LastError (including terminating null char) */
strncpy(LastError, message, len) ;
DLDEBUG(2,fprintf(stderr,"DynaLoader: stored error msg '%s'\n",LastError));
}
/* prepend underscore to s. write into buf. return buf. */
char *
dl_add_underscore(s, buf)
char *s;
char *buf;
{
*buf = '_';
(void)strcpy(buf + 1, s);
return buf;
}
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