/*
 * The C RunTime DLL
 * 
 * Implements C run-time functionality as known from UNIX.
 *
 * Copyright 1996 Marcus Meissner
 * Copyright 1996 Jukka Iivonen
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <ctype.h>
#include <math.h>
#include "win.h"
#include "windows.h"
#include "stddebug.h"
#include "debug.h"
#include "module.h"
#include "xmalloc.h"
#include "heap.h"
#include "crtdll.h"
#include "drive.h"

extern INT32 WIN32_wsprintf32W( DWORD *args );

UINT32 CRTDLL_argc_dll;         /* CRTDLL.23 */
LPSTR *CRTDLL_argv_dll;         /* CRTDLL.24 */
LPSTR  CRTDLL_acmdln_dll;       /* CRTDLL.38 */
UINT32 CRTDLL_basemajor_dll;    /* CRTDLL.42 */
UINT32 CRTDLL_baseminor_dll;    /* CRTDLL.43 */
UINT32 CRTDLL_baseversion_dll;  /* CRTDLL.44 */
LPSTR  CRTDLL_environ_dll;      /* CRTDLL.75 */
UINT32 CRTDLL_osmajor_dll;      /* CRTDLL.241 */
UINT32 CRTDLL_osminor_dll;      /* CRTDLL.242 */
UINT32 CRTDLL_osver_dll;        /* CRTDLL.244 */
UINT32 CRTDLL_osversion_dll;    /* CRTDLL.245 */
UINT32 CRTDLL_winmajor_dll;     /* CRTDLL.329 */
UINT32 CRTDLL_winminor_dll;     /* CRTDLL.330 */
UINT32 CRTDLL_winver_dll;       /* CRTDLL.331 */

typedef VOID (*new_handler_type)(VOID);

static new_handler_type new_handler;

/*********************************************************************
 *                  _GetMainArgs  (CRTDLL.022)
 */
DWORD
CRTDLL__GetMainArgs(LPDWORD argc,LPSTR **argv,LPSTR *environ,DWORD flag)
{
        char *cmdline;
        char  **xargv;
	int	xargc,i,afterlastspace;
	DWORD	version;

	dprintf_crtdll(stderr,"__GetMainArgs(%p,%p,%p,%ld).\n",
		argc,argv,environ,flag
	);
	CRTDLL_acmdln_dll = cmdline = xstrdup( GetCommandLine32A() );

	version	= GetVersion32();
	CRTDLL_osver_dll       = version >> 16;
	CRTDLL_winminor_dll    = version & 0xFF;
	CRTDLL_winmajor_dll    = (version>>8) & 0xFF;
	CRTDLL_baseversion_dll = version >> 16;
	CRTDLL_winver_dll      = ((version >> 8) & 0xFF) + ((version & 0xFF) << 8);
	CRTDLL_baseminor_dll   = (version >> 16) & 0xFF;
	CRTDLL_basemajor_dll   = (version >> 24) & 0xFF;
	CRTDLL_osversion_dll   = version & 0xFFFF;
	CRTDLL_osminor_dll     = version & 0xFF;
	CRTDLL_osmajor_dll     = (version>>8) & 0xFF;

	/* missing threading init */

	i=0;xargv=NULL;xargc=0;afterlastspace=0;
	while (cmdline[i]) {
		if (cmdline[i]==' ') {
			xargv=(char**)xrealloc(xargv,sizeof(char*)*(++xargc));
			cmdline[i]='\0';
			xargv[xargc-1] = xstrdup(cmdline+afterlastspace);
			i++;
			while (cmdline[i]==' ')
				i++;
			if (cmdline[i])
				afterlastspace=i;
		} else
			i++;
	}
	xargv=(char**)xrealloc(xargv,sizeof(char*)*(++xargc));
	cmdline[i]='\0';
	xargv[xargc-1] = xstrdup(cmdline+afterlastspace);
	CRTDLL_argc_dll	= xargc;
	*argc		= xargc;
	CRTDLL_argv_dll	= xargv;
	*argv		= xargv;

	/* FIXME ... use real environment */
	*environ	= xmalloc(sizeof(LPSTR));
	CRTDLL_environ_dll = *environ;
	(*environ)[0] = NULL;
	return 0;
}

typedef void (*_INITTERMFUN)();

/*********************************************************************
 *                  _initterm     (CRTDLL.135)
 */
DWORD CRTDLL__initterm(_INITTERMFUN *start,_INITTERMFUN *end)
{
	_INITTERMFUN	*current;

	dprintf_crtdll(stddeb,"_initterm(%p,%p)\n",start,end);
	current=start;
	while (current<end) {
		if (*current) (*current)();
		current++;
	}
	return 0;
}

/*********************************************************************
 *                  srand         (CRTDLL.460)
 */
void CRTDLL_srand(DWORD seed)
{
	/* FIXME: should of course be thread? process? local */
	srand(seed);
}

/*********************************************************************
 *                  fprintf       (CRTDLL.373)
 */
int CRTDLL_fprintf(DWORD *args)
{
	/* FIXME: use args[0] */
	/* CMF - This makes a BIG assumption about va_list */
	return vfprintf(stderr, (LPSTR) args[1], (va_list) &args[2]);
}

/*********************************************************************
 *                  printf        (CRTDLL.440)
 */
int CRTDLL_printf(DWORD *args)
{
	/* CMF - This makes a BIG assumption about va_list */
	return vfprintf(stdout, (LPSTR) args[0], (va_list) &args[1]);
}

/*********************************************************************
 *                  sprintf        (CRTDLL.458)
 */
int CRTDLL_sprintf(DWORD *args)
{
	/* CMF - This makes a BIG assumption about va_list */
	return vsprintf((LPSTR) args[0], (LPSTR) args[1], (va_list) &args[2]);
}

/*********************************************************************
 *                  time          (CRTDLL.488)
 */
time_t CRTDLL_time(time_t *timeptr)
{
	time_t	curtime = time(NULL);

	if (timeptr)
		*timeptr = curtime;
	return curtime;
}

/*********************************************************************
 *                  _isatty       (CRTDLL.137)
 */
BOOL32 CRTDLL__isatty(DWORD x)
{
	dprintf_crtdll(stderr,"CRTDLL__isatty(%ld)\n",x);
	return TRUE;
}

/*********************************************************************
 *                  _write        (CRTDLL.332)
 */
INT32 CRTDLL__write(DWORD x,LPVOID buf,DWORD len)
{
	if (x<=2)
		return write(x,buf,len);
	/* hmm ... */
	dprintf_crtdll(stderr,"CRTDLL__write(%ld,%p,%ld)\n",x,buf,len);
	return len;
}


/*********************************************************************
 *                  exit          (CRTDLL.359)
 */
void CRTDLL_exit(DWORD ret)
{
        dprintf_crtdll(stderr,"CRTDLL_exit(%ld)\n",ret);
	ExitProcess(ret);
}


/*********************************************************************
 *                  fflush        (CRTDLL.365)
 */
void CRTDLL_fflush(DWORD x)
{
    dprintf_crtdll(stderr,"CRTDLL_fflush(%ld)\n",x);
}


/*********************************************************************
 *                  gets          (CRTDLL.391)
 */
LPSTR CRTDLL_gets(LPSTR buf)
{
  /* BAD, for the whole WINE process blocks... just done this way to test
   * windows95's ftp.exe.
   */
    return gets(buf);
}


/*********************************************************************
 *                  abs           (CRTDLL.339)
 */
INT32 CRTDLL_abs(INT32 x)
{
    return abs(x);
}


/*********************************************************************
 *                  acos          (CRTDLL.340)
 */
float CRTDLL_acos(float x)
{
    return acos(x);
}


/*********************************************************************
 *                  asin          (CRTDLL.342)
 */
float CRTDLL_asin(float x)
{
    return asin(x);
}


/*********************************************************************
 *                  atan          (CRTDLL.343)
 */
float CRTDLL_atan(float x)
{
    return atan(x);
}


/*********************************************************************
 *                  atan2         (CRTDLL.344)
 */
float CRTDLL_atan2(float x, float y)
{
    return atan2(x,y);
}


/*********************************************************************
 *                  atof          (CRTDLL.346)
 */
float CRTDLL_atof(LPCSTR x)
{
    return atof(x);
}


/*********************************************************************
 *                  atoi          (CRTDLL.347)
 */
INT32 CRTDLL_atoi(LPCSTR x)
{
    return atoi(x);
}


/*********************************************************************
 *                  atol          (CRTDLL.348)
 */
LONG CRTDLL_atol(LPCSTR x)
{
    return atol(x);
}


/*********************************************************************
 *                  cos           (CRTDLL.354)
 */
float CRTDLL_cos(float x)
{
    return cos(x);
}


/*********************************************************************
 *                  cosh          (CRTDLL.355)
 */
float CRTDLL_cosh(float x)
{
    return cosh(x);
}


/*********************************************************************
 *                  exp           (CRTDLL.360)
 */
float CRTDLL_exp(float x)
{
    return exp(x);
}


/*********************************************************************
 *                  fabs          (CRTDLL.361)
 */
float CRTDLL_fabs(float x)
{
    return fabs(x);
}


/*********************************************************************
 *                  isalnum       (CRTDLL.394)
 */
CHAR CRTDLL_isalnum(CHAR x)
{
    return isalnum(x);
}


/*********************************************************************
 *                  isalpha       (CRTDLL.395)
 */
CHAR CRTDLL_isalpha(CHAR x)
{
    return isalpha(x);
}


/*********************************************************************
 *                  iscntrl       (CRTDLL.396)
 */
CHAR CRTDLL_iscntrl(CHAR x)
{
    return iscntrl(x);
}


/*********************************************************************
 *                  isdigit       (CRTDLL.397)
 */
CHAR CRTDLL_isdigit(CHAR x)
{
    return isdigit(x);
}


/*********************************************************************
 *                  isgraph       (CRTDLL.398)
 */
CHAR CRTDLL_isgraph(CHAR x)
{
    return isgraph(x);
}


/*********************************************************************
 *                  islower       (CRTDLL.400)
 */
CHAR CRTDLL_islower(CHAR x)
{
    return islower(x);
}


/*********************************************************************
 *                  isprint       (CRTDLL.401)
 */
CHAR CRTDLL_isprint(CHAR x)
{
    return isprint(x);
}


/*********************************************************************
 *                  ispunct       (CRTDLL.402)
 */
CHAR CRTDLL_ispunct(CHAR x)
{
    return ispunct(x);
}


/*********************************************************************
 *                  isspace       (CRTDLL.403)
 */
CHAR CRTDLL_isspace(CHAR x)
{
    return isspace(x);
}


/*********************************************************************
 *                  isupper       (CRTDLL.404)
 */
CHAR CRTDLL_isupper(CHAR x)
{
    return isupper(x);
}


/*********************************************************************
 *                  isxdigit      (CRTDLL.418)
 */
CHAR CRTDLL_isxdigit(CHAR x)
{
    return isxdigit(x);
}


/*********************************************************************
 *                  labs          (CRTDLL.419)
 */
LONG CRTDLL_labs(LONG x)
{
    return labs(x);
}


/*********************************************************************
 *                  log           (CRTDLL.424)
 */
float CRTDLL_log(float x)
{
    return log(x);
}


/*********************************************************************
 *                  log10         (CRTDLL.425)
 */
float CRTDLL_log10(float x)
{
    return log10(x);
}


/*********************************************************************
 *                  pow           (CRTDLL.439)
 */
float CRTDLL_pow(float x, float y)
{
    return pow(x,y);
}


/*********************************************************************
 *                  rand          (CRTDLL.446)
 */
INT32 CRTDLL_rand()
{
    return rand();
}


/*********************************************************************
 *                  sin           (CRTDLL.456)
 */
float CRTDLL_sin(float x)
{
    return sin(x);
}


/*********************************************************************
 *                  sinh          (CRTDLL.457)
 */
float CRTDLL_sinh(float x)
{
    return sinh(x);
}


/*********************************************************************
 *                  sqrt          (CRTDLL.459)
 */
float CRTDLL_sqrt(float x)
{
    return sqrt(x);
}


/*********************************************************************
 *                  tan           (CRTDLL.486)
 */
float CRTDLL_tan(float x)
{
    return tan(x);
}


/*********************************************************************
 *                  tanh          (CRTDLL.487)
 */
float CRTDLL_tanh(float x)
{
    return tanh(x);
}


/*********************************************************************
 *                  tolower       (CRTDLL.491)
 */
CHAR CRTDLL_tolower(CHAR x)
{
    return tolower(x);
}


/*********************************************************************
 *                  toupper       (CRTDLL.492)
 */
CHAR CRTDLL_toupper(CHAR x)
{
    return toupper(x);
}


/*********************************************************************
 *                  putchar       (CRTDLL.442)
 */
void CRTDLL_putchar(INT32 x)
{
    putchar(x);
}


/*********************************************************************
 *                  _mbsicmp      (CRTDLL.204)
 */
int CRTDLL__mbsicmp(unsigned char *x,unsigned char *y)
{
    do {
	if (!*x)
	    return !!*y;
	if (!*y)
	    return !!*x;
	/* FIXME: MBCS handling... */
	if (*x!=*y)
	    return 1;
        x++;
        y++;
    } while (1);
}


/*********************************************************************
 *                  _mbsinc       (CRTDLL.205)
 */
unsigned char* CRTDLL__mbsinc(unsigned char *x)
{
    /* FIXME: mbcs */
    return x++;
}


/*********************************************************************
 *                  vsprintf      (CRTDLL.500)
 */
int CRTDLL_vsprintf(DWORD *args)
{
	/* CMF - This makes a BIG assumption about va_list */
	return vsprintf((char *) args[0], (char *) args[1], (va_list) &args[2]);
}

/*********************************************************************
 *                  vsprintf      (CRTDLL.500) (NTDLL.913)
 */
int CRTDLL_sscanf(DWORD *args)
{
	/* CMF - This makes a BIG assumption about va_list */
	return vsscanf((char *) args[0], (char *) args[1], (va_list) &args[2]);
}


/*********************************************************************
 *                  _mbscpy       (CRTDLL.200)
 */
unsigned char* CRTDLL__mbscpy(unsigned char *x,unsigned char *y)
{
    return strcpy(x,y);
}


/*********************************************************************
 *                  _mbscat       (CRTDLL.197)
 */
unsigned char* CRTDLL__mbscat(unsigned char *x,unsigned char *y)
{
    return strcat(x,y);
}

/*********************************************************************
 *                  _strupr       (CRTDLL.300)
 */
LPSTR CRTDLL__strupr(LPSTR x)
{
	LPSTR	y=x;

	while (*y) {
		*y=toupper(*y);
		y++;
	}
	return x;
}

/*********************************************************************
 *                  _wcsupr       (CRTDLL.328)
 */
LPWSTR CRTDLL__wcsupr(LPWSTR x)
{
	LPWSTR	y=x;

	while (*y) {
		*y=toupper(*y);
		y++;
	}
	return x;
}

/*********************************************************************
 *                  _wcslwr       (CRTDLL.323)
 */
LPWSTR CRTDLL__wcslwr(LPWSTR x)
{
	LPWSTR	y=x;

	while (*y) {
		*y=tolower(*y);
		y++;
	}
	return x;
}


/*********************************************************************
 *                  malloc        (CRTDLL.427)
 */
VOID* CRTDLL_malloc(DWORD size)
{
    return HeapAlloc(GetProcessHeap(),0,size);
}

/*********************************************************************
 *                  new           (CRTDLL.001)
 */
VOID* CRTDLL_new(DWORD size)
{
    VOID* result;
    if(!(result = HeapAlloc(GetProcessHeap(),0,size)) && new_handler)
	(*new_handler)();
    return result;
}

/*********************************************************************
 *                  set_new_handler(CRTDLL.003)
 */
new_handler_type CRTDLL_set_new_handler(new_handler_type func)
{
    new_handler_type old_handler = new_handler;
    new_handler = func;
    return old_handler;
}

/*********************************************************************
 *                  calloc        (CRTDLL.350)
 */
VOID* CRTDLL_calloc(DWORD size, DWORD count)
{
    return HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size * count );
}

/*********************************************************************
 *                  realloc        (CRTDLL.447)
 */
VOID* CRTDLL_realloc( VOID *ptr, DWORD size )
{
    return HeapReAlloc( GetProcessHeap(), 0, ptr, size );
}

/*********************************************************************
 *                  free          (CRTDLL.427)
 */
VOID CRTDLL_free(LPVOID ptr)
{
    HeapFree(GetProcessHeap(),0,ptr);
}

/*********************************************************************
 *                  delete       (CRTDLL.002)
 */
VOID CRTDLL_delete(VOID* ptr)
{
    HeapFree(GetProcessHeap(),0,ptr);
}

/*********************************************************************
 *                  _strdup          (CRTDLL.285)
 */
LPSTR CRTDLL__strdup(LPSTR ptr)
{
    return HEAP_strdupA(GetProcessHeap(),0,ptr);
}

/*********************************************************************
 *                  fclose           (CRTDLL.362)
 */
DWORD CRTDLL_fclose(LPVOID x)
{
    dprintf_crtdll(stdnimp,"fclose(%p)\n",x);
    return 0;
}

/*********************************************************************
 *                  setlocale           (CRTDLL.453)
 */
LPSTR CRTDLL_setlocale(INT32 category,LPCSTR locale)
{
	LPSTR categorystr;

	switch (category) {
	case CRTDLL_LC_ALL: categorystr="LC_ALL";break;
	case CRTDLL_LC_COLLATE: categorystr="LC_COLLATE";break;
	case CRTDLL_LC_CTYPE: categorystr="LC_CTYPE";break;
	case CRTDLL_LC_MONETARY: categorystr="LC_MONETARY";break;
	case CRTDLL_LC_NUMERIC: categorystr="LC_NUMERIC";break;
	case CRTDLL_LC_TIME: categorystr="LC_TIME";break;
	default: categorystr = "UNKNOWN?";break;
	}
	fprintf(stderr,"CRTDLL.setlocale(%s,%s),stub!\n",categorystr,locale);
	return "C";
}

/*********************************************************************
 *                  wcsspn           (CRTDLL.516)
 */
INT32 CRTDLL_wcsspn(LPWSTR str,LPWSTR accept)
{
	LPWSTR	s,t;

	s=str;
	do {
		t=accept;
		while (*t) { if (*t==*s) break;t++;}
		if (!*t) break;
		s++;
	} while (*s);
	return s-str; /* nr of wchars */
}

/*********************************************************************
 *                  wcscspn           (CRTDLL.508)
 */
INT32 CRTDLL_wcscspn(LPWSTR str,LPWSTR reject)
{
	LPWSTR	s,t;

	s=str;
	do {
		t=reject;
		while (*t) { if (*t==*s) break;t++;}
		if (*t) break;
		s++;
	} while (*s);
	return s-str; /* nr of wchars */
}

/*********************************************************************
 *                  wcschr           (CRTDLL.504)
 */
LPWSTR CRTDLL_wcschr(LPWSTR str,WCHAR xchar)
{
	LPWSTR	s;

	s=str;
	do {
		if (*s==xchar)
			return s;
	} while (*s++);
	return NULL;
}

/*********************************************************************
 *                  towupper           (CRTDLL.494)
 */
WCHAR CRTDLL_towupper(WCHAR x)
{
    return (WCHAR)toupper((CHAR)x);
}

/*********************************************************************
 *                  swprintf           (CRTDLL.483)
 */
DWORD CRTDLL_swprintf(DWORD *args)
{
    return WIN32_wsprintf32W(args);
}

/*********************************************************************
 *                  _wcsicoll           (CRTDLL.322)
 */
DWORD CRTDLL__wcsicoll(LPWSTR a1,LPWSTR a2)
{
    /* FIXME: handle collates */
    return lstrcmpi32W(a1,a2);
}

/*********************************************************************
 *                  wcscoll           (CRTDLL.506)
 */
DWORD CRTDLL_wcscoll(LPWSTR a1,LPWSTR a2)
{
    /* FIXME: handle collates */
    return lstrcmp32W(a1,a2);
}

/*********************************************************************
 *                  _wcsrev           (CRTDLL.326)
 */
VOID CRTDLL__wcsrev(LPWSTR s) {
	LPWSTR	e;

	e=s;
	while (*e)
		e++;
	while (s<e) {
		WCHAR	a;

		a=*s;*s=*e;*e=a;
		s++;e--;
	}
}

/*********************************************************************
 *                  wcsstr           (CRTDLL.517)
 */
LPWSTR CRTDLL_wcsstr(LPWSTR s,LPWSTR b)
{
	LPWSTR	x,y,c;

	x=s;
	while (*x) {
		if (*x==*b) {
			y=x;c=b;
			while (*y && *c && *y==*c) { c++;y++; }
			if (!*c)
				return x;
		}
		x++;
	}
	return NULL;
}

/*********************************************************************
 *                  wcsrchr           (CRTDLL.515)
 */
LPWSTR CRTDLL_wcsrchr(LPWSTR str,WCHAR xchar)
{
	LPWSTR	s;

	s=str+lstrlen32W(str);
	do {
		if (*s==xchar)
			return s;
		s--;
	} while (s>=str);
	return NULL;
}

/*********************************************************************
 *                  _setmode           (CRTDLL.265)
 * FIXME: dunno what this is.
 */
DWORD
CRTDLL__setmode(LPVOID x,INT32 y) {
	/* FIXME */
	fprintf(stdnimp,"CRTDLL._setmode(%p,%d), STUB.\n",x,y);
	return 0;
}

/*********************************************************************
 *                  atexit           (CRTDLL.345)
 */
INT32
CRTDLL_atexit(LPVOID x) {
	/* FIXME */
	fprintf(stdnimp,"CRTDLL.atexit(%p), STUB.\n",x);
	return 0; /* successful */
}

/*********************************************************************
 *                  mbstowcs           (CRTDLL.429)
 * FIXME: check multibyte support
 */
INT32
CRTDLL_mbstowcs(LPWSTR a,LPSTR b,INT32 nr) {
	int	i;
	for (i=0;(i<nr) && b[i];i++) {
		a[i] = (WCHAR)b[i];
	}
	return i;
}

/*********************************************************************
 *                  mbtowc           (CRTDLL.430)
 * FIXME: check multibyte support
 */
WCHAR
CRTDLL_mbtowc(CHAR a) {
	return a;
}

/*********************************************************************
 *                  _isctype           (CRTDLL.138)
 */
BOOL32
CRTDLL__isctype(CHAR x,CHAR type) {
	if ((type & CRTDLL_SPACE) && isspace(x))
		return TRUE;
	if ((type & CRTDLL_PUNCT) && ispunct(x))
		return TRUE;
	if ((type & CRTDLL_LOWER) && islower(x))
		return TRUE;
	if ((type & CRTDLL_UPPER) && isupper(x))
		return TRUE;
	if ((type & CRTDLL_ALPHA) && isalpha(x))
		return TRUE;
	if ((type & CRTDLL_DIGIT) && isdigit(x))
		return TRUE;
	if ((type & CRTDLL_CONTROL) && iscntrl(x))
		return TRUE;
	/* check CRTDLL_LEADBYTE */
	return FALSE;
}

/*********************************************************************
 *                  _chdrive           (CRTDLL.52)
 */
BOOL32
CRTDLL__chdrive(INT32 newdrive) {
	/* FIXME: generates errnos */
	return DRIVE_SetCurrentDrive(newdrive);
}

/*********************************************************************
 *                  _chdir           (CRTDLL.51)
 */
INT32
CRTDLL__chdir(LPCSTR newdir) {
	if (!SetCurrentDirectory32A(newdir))
		return -1;
	return 0;
}

/*********************************************************************
 *                  _mkdir           (CRTDLL.234)
 */
INT32
CRTDLL__mkdir(LPCSTR newdir) {
	if (!CreateDirectory32A(newdir,NULL))
		return -1;
	return 0;
}

/*********************************************************************
 *                  _errno           (CRTDLL.52)
 * Yes, this is a function.
 */
LPINT32
CRTDLL__errno() {
	static	int crtdllerrno;
	extern int LastErrorToErrno(DWORD);

	/* FIXME: we should set the error at the failing function call time */
	crtdllerrno = LastErrorToErrno(GetLastError());
	return &crtdllerrno;
}