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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/* Original code:
* Implementation for standard and semi-standard C library calls missing in WinCE
* environment.
* by Vasyl Tsvirkunov
*/
// Disable symbol overrides so that we can use system headers.
#define FORBIDDEN_SYMBOL_ALLOW_ALL
#include <windows.h>
#include <tchar.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "common/debug.h"
char *strdup(const char *strSource);
#ifdef __GNUC__
#define EXT_C extern "C"
#else
#define EXT_C
#endif
// common missing functions required by both gcc and evc
void *bsearch(const void *key, const void *base, size_t nmemb,
size_t size, int (*compar)(const void *, const void *)) {
// Perform binary search
size_t lo = 0;
size_t hi = nmemb;
while (lo < hi) {
size_t mid = (lo + hi) / 2;
const void *p = ((const char *)base) + mid * size;
int tmp = (*compar)(key, p);
if (tmp < 0)
hi = mid;
else if (tmp > 0)
lo = mid + 1;
else
return (void *)p;
}
return NULL;
}
static char cwd[MAX_PATH+1] = "";
EXT_C char *getcwd(char *buffer, int maxlen) {
TCHAR fileUnc[MAX_PATH+1];
char* plast;
if (cwd[0] == 0) {
GetModuleFileName(NULL, fileUnc, MAX_PATH);
WideCharToMultiByte(CP_ACP, 0, fileUnc, -1, cwd, MAX_PATH, NULL, NULL);
plast = strrchr(cwd, '\\');
if (plast)
*plast = 0;
/* Special trick to keep start menu clean... */
if (_stricmp(cwd, "\\windows\\start menu") == 0)
strcpy(cwd, "\\Apps");
}
if (buffer)
strncpy(buffer, cwd, maxlen);
return cwd;
}
#ifdef __GNUC__
#undef GetCurrentDirectory
#endif
EXT_C void GetCurrentDirectory(int len, char *buf) {
getcwd(buf,len);
}
/*
Windows CE fopen has non-standard behavior -- not
fully qualified paths refer to root folder rather
than current folder (concept not implemented in CE).
*/
#undef fopen
EXT_C FILE *wce_fopen(const char* fname, const char* fmode) {
char fullname[MAX_PATH+1];
if (!fname || fname[0] == '\0')
return NULL;
if (fname[0] != '\\' && fname[0] != '/') {
getcwd(fullname, MAX_PATH);
strcat(fullname, "\\");
strcat(fullname, fname);
return fopen(fullname, fmode);
} else
return fopen(fname, fmode);
}
/* Remove file by name */
int remove(const char* path) {
TCHAR pathUnc[MAX_PATH+1];
MultiByteToWideChar(CP_ACP, 0, path, -1, pathUnc, MAX_PATH);
return !DeleteFile(pathUnc);
}
/* check out file access permissions */
int _access(const char *path, int mode) {
TCHAR fname[MAX_PATH];
char fullname[MAX_PATH+1];
if (path[0] != '\\' && path[0] != '/') {
getcwd(fullname, MAX_PATH);
strcat(fullname, "\\");
strcat(fullname, path);
MultiByteToWideChar(CP_ACP, 0, fullname, -1, fname, sizeof(fname)/sizeof(TCHAR));
} else
MultiByteToWideChar(CP_ACP, 0, path, -1, fname, sizeof(fname)/sizeof(TCHAR));
WIN32_FIND_DATA ffd;
HANDLE h = FindFirstFile(fname, &ffd);
FindClose(h);
if (h == INVALID_HANDLE_VALUE) {
// WORKAROUND: WinCE 3.0 doesn't find paths ending in '\'
if (path[strlen(path)-1] == '\\') {
char p2[MAX_PATH];
strncpy(p2, path, strlen(path)-1);
p2[strlen(path) - 1]= '\0';
return _access(p2, mode);
} else
return -1; //Can't find file
}
if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
// WORKAROUND: WinCE (or the emulator) sometimes returns bogus directory
// hits for files that don't exist. TRIPLE checking for the same fname
// seems to weed out those false positives.
// Exhibited in kyra engine.
HANDLE h = FindFirstFile(fname, &ffd);
FindClose(h);
if (h == INVALID_HANDLE_VALUE)
return -1; //Can't find file
h = FindFirstFile(fname, &ffd);
FindClose(h);
if (h == INVALID_HANDLE_VALUE)
return -1; //Can't find file
return 0; //Always return success if target is directory and exists
}
switch (mode) {
case 00: //Check existence
return 0;
case 06: //Check Read & Write permission
case 02: //Check Write permission
return ffd.dwFileAttributes & FILE_ATTRIBUTE_READONLY ? -1 : 0;
case 04: //Check Read permission
return 0; //Assume always have read permission
}
//Bad mode value supplied, return failure
return -1;
}
// evc only functions follow
#ifndef __GNUC__
char *strdup(const char *strSource) {
char *buffer;
size_z len = strlen(strSource) + 1;
buffer = (char*)malloc(len);
if (buffer)
memcpy(buffer, strSource, len);
return buffer;
}
// gcc build only functions follow
#else // defined(__GNUC__)
#ifndef __MINGW32CE__
int islower(int c) {
return (c>='a' && c<='z');
}
int isspace(int c) {
return (c==' ' || c=='\f' || c=='\n' || c=='\r' || c=='\t' || c=='\v');
}
int isalpha(int c) {
return ((c>='a' && c<='z') || (c>='A' && c<='Z'));
}
int isalnum(int c) {
return ((c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9'));
}
int isprint(int c) {
//static const char punct[] = "!\"#%&'();<=>?[\\]*+,-./:^_{|}~";
//return (isalnum(c) || strchr(punct, c));
return (32 <= c && c <= 126); // based on BSD manpage
}
#endif
#endif
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