/*
 * Copyright (C) 2000-2007 Carsten Haitzler, Geoff Harrison and various contributors
 * Copyright (C) 2004-2023 Kim Woelders
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies of the Software, its documentation and marketing & publicity
 * materials, and acknowledgment shall be given in the documentation, materials
 * and software packages that this Software was used.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef _UTIL_H_
#define _UTIL_H_

#include "config.h"

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif

#define VERS(maj, min) (1000 * (maj) + (min))

#define INT2PTR(i) ((void*)(long)(i))
#define PTR2INT(p) ((int)(long)(p))

#if HAVE___ATTRIBUTE__
#define __PRINTF_N__(no)  __attribute__((__format__(__printf__, (no), (no)+1)))
#define __NORETURN__      __attribute__((noreturn))
#else
#define __PRINTF_N__(no)
#define __NORETURN__
#endif
#define __PRINTF__   __PRINTF_N__(1)
#define __PRINTF_2__ __PRINTF_N__(2)
#define __PRINTF_5__ __PRINTF_N__(5)

#if HAVE_STRDUP
#define USE_LIBC_STRDUP  1      /* Use libc strdup if present */
#endif
#if HAVE_STRNDUP
#define USE_LIBC_STRNDUP 1      /* Use libc strndup if present */
#endif

#ifdef HAVE_STRCASECMP
#define Estrcasecmp(s1, s2) strcasecmp(s1, s2)
#else
int             Estrcasecmp(const char *s1, const char *s2);
#endif
#ifdef HAVE_STRCASESTR
#define Estrcasestr(haystack, needle) strcasestr(haystack, needle)
#else
const char     *Estrcasestr(const char *haystack, const char *needle);
#endif

/* memory.c */
#define Ecalloc     calloc
#define Emalloc     malloc
#define Erealloc    realloc
#define Efree       free

void           *Ememdup(const void *ptr, unsigned int len);

#define ECALLOC(type, num) (type*)Ecalloc(num, sizeof(type))
#define EMALLOC(type, num) (type*)Emalloc((num)*sizeof(type))
#define EREALLOC(type, ptr, num) (type*)Erealloc(ptr, (num)*sizeof(type))

#define EMEMDUP(type, ptr, num) (type*)Ememdup(ptr, (num)*sizeof(type))

void            EfreeNull(void **p);
void            EfreeSet(void **p, void *s);
void            EfreeDup(char **p, const char *s);

#define EFREE_NULL(p)   EfreeNull((void**)(&p))
#define EFREE_SET(p, s) EfreeSet((void**)(&p), s)
#define EFREE_DUP(p, s) EfreeDup(&p, s)

#define STRCPY(dst, src) do { src[sizeof(dst)-1] = '\0'; strcpy(dst, src); } while(0)

char           *Estrdup(const char *s);
char           *Estrndup(const char *s, size_t n);
char           *Estrdupcat2(char *ss, const char *s1, const char *s2);

void            Esetenv(const char *name, const char *value);

/* misc.c */
void __PRINTF__ Eprintf(const char *fmt, ...);

/* string.c */
void            EnvSubst(const char *str, char *bptr, unsigned int blen);

char           *Estrtrim(char *s);
char           *Estrtrim2(char *s);

char          **StrlistDup(char **lst, int num);
void            StrlistFree(char **lst, int num);
char           *StrlistJoin(char **lst, int num);
char           *StrlistEncodeEscaped(char *buf, int len, char **lst, int num);
char          **StrlistDecodeEscaped(const char *str, int *pnum);
char          **StrlistFromString(const char *str, int delim, int *num);

void            StrlistSort(char **lst, int num);

#define Evsnprintf vsnprintf
#define Esnprintf snprintf

#define EXEC_SET_LANG       0x01
#define EXEC_SET_STARTUP_ID 0x02
#define EXEC_NO_LIBHACK     0x04

void            Eexec(const char *cmd);
int             EspawnApplication(const char *params, int flags);
void __PRINTF__ Espawn(const char *fmt, ...);
int __PRINTF__  Esystem(const char *fmt, ...);

#if USE_MODULES
/* Dynamic loading */
const void     *ModLoadSym(const char *lib, const char *sym, const char *name);
#endif

unsigned int    GetTimeMs(void);
unsigned int    GetTimeUs(void);

void            SleepUs(unsigned int tus);

#define E_ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

#endif                          /* _UTIL_H_ */