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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2018 Jason King
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <pthread.h>
#include <sys/debug.h>
#include "demangle-sys.h"
#include "demangle_int.h"
#define DEMANGLE_DEBUG "DEMANGLE_DEBUG"
static pthread_once_t debug_once = PTHREAD_ONCE_INIT;
volatile boolean_t demangle_debug;
static sysdem_lang_t
detect_lang(const char *str)
{
size_t n = strlen(str);
if (n < 3 || str[0] != '_')
return (SYSDEM_LANG_AUTO);
switch (str[1]) {
case 'Z':
return (SYSDEM_LANG_CPP);
case '_':
break;
default:
return (SYSDEM_LANG_AUTO);
}
/* why they use ___Z sometimes is puzzling... *sigh* */
if (str[2] == '_' && str[3] == 'Z')
return (SYSDEM_LANG_CPP);
return (SYSDEM_LANG_AUTO);
}
static void
check_debug(void)
{
if (getenv(DEMANGLE_DEBUG))
demangle_debug = B_TRUE;
}
char *
sysdemangle(const char *str, sysdem_lang_t lang, sysdem_ops_t *ops)
{
VERIFY0(pthread_once(&debug_once, check_debug));
if (ops == NULL)
ops = sysdem_ops_default;
if (lang == SYSDEM_LANG_AUTO) {
lang = detect_lang(str);
if (lang == SYSDEM_LANG_AUTO) {
errno = ENOTSUP;
return (NULL);
}
}
switch (lang) {
case SYSDEM_LANG_AUTO:
break;
case SYSDEM_LANG_CPP:
return (cpp_demangle(str, ops));
}
errno = ENOTSUP;
return (NULL);
}
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