stdlibx.cpp

pwlib源码库

//
// (c) Yuri Kiryanov, [e-mail] and
//     Yuriy Gorvitovskiy
//
// for Openh323, www.Openh323.org
//
// Windows CE Port
//
// stdlib routines implemented through Windows CE API
//

#include <ptlib.h>
#include <Atlconv.h>
#include <winbase.h>
#include <winnt.h>
#include <snmp.h>

#include <ptlib/sockets.h>

#define DELETE (0x00010000L) // defined in <winnt.h> and undef "msos/ptlib/contain.h"

#ifndef __cplusplus
#include <tchar.h>
int isprint(int c) { return _istprint(c);}
int isxdigit(int c) { return _istxdigit(c); }
int isspace( int c ) { return _istspace(c); }
int isupper( int c ) { return _istupper(c); }
int islower( int c ) { return _istlower(c); }
int isalnum( int c ) { return _istalnum(c); }
int isalpha( int c ) { return _istalpha(c); }
int iscntrl( int c ) { return _istcntrl(c); }
int isdigit( int c ) { return _istdigit(c); }
int ispunct( int c ) { return _istpunct(c); }
#endif

void __cdecl abort(void) { 
	if(IDYES == MessageBox(NULL, _T("Abort?"), _T("stdlibx"), MB_YESNO))
		exit(3);
}

void __cdecl perror(const char * s) {
	USES_CONVERSION;
	MessageBox(NULL, s && *s ? A2T(s) : _T("null"), _T("stdlibx"), MB_OK); 
}

long _lseek(int nHandle, long off, int orig)
{
	DWORD dwMoveMethod=FILE_BEGIN;
	switch(orig)
	{
		case SEEK_SET: dwMoveMethod=FILE_BEGIN; break;
		case SEEK_CUR: dwMoveMethod=FILE_CURRENT; break;
		case SEEK_END: dwMoveMethod=FILE_END; break;
	}
	return SetFilePointer((HANDLE)nHandle,off,NULL,dwMoveMethod);
}

int  _close(int nHandle)
{
        FlushFileBuffers((HANDLE)nHandle);
	return (CloseHandle((HANDLE)nHandle)) ? 0 : -1;
}
int  _read(int nHandle, void *p, unsigned int s)
{
	DWORD size=0;
	ReadFile((HANDLE)nHandle,p,s,&size,NULL);
	return size;
}

int  _write(int nHandle, const void *p, unsigned int s)
{
	DWORD size=0;
	WriteFile((HANDLE)nHandle,p,s,&size,NULL);
	//[YG]???? FlushFileBuffers((HANDLE)nHandle);
	return size;
}
int	_open( const char *filename, int oflag , int pmode)
{
	USES_CONVERSION;
    HANDLE	osfh;                    /* OS handle of opened file */
    DWORD	fileaccess;               /* OS file access (requested) */
    DWORD	fileshare;                /* OS file sharing mode */
    DWORD	filecreate;               /* OS method of opening/creating */
    DWORD	fileattrib;               /* OS file attribute flags */
    
    /*
     * decode the access flags
     */
    switch( oflag & (_O_RDONLY | _O_WRONLY | _O_RDWR) ) 
	{
        case _O_RDONLY:         /* read access */
                fileaccess = GENERIC_READ;
                break;
        case _O_WRONLY:         /* write access */
                fileaccess = GENERIC_WRITE;
                break;
        case _O_RDWR:           /* read and write access */
                fileaccess = GENERIC_READ | GENERIC_WRITE;
                break;
        default:                /* error, bad oflag */
                set_errno(EINVAL);
                return -1;
    }

    /*
     * decode sharing flags
     */
	fileshare = FILE_SHARE_READ | FILE_SHARE_WRITE;

    /*
     * decode open/create method flags
     */
    switch ( oflag & (_O_CREAT | _O_EXCL | _O_TRUNC) ) 
	{
            case 0:
            case _O_EXCL:                   // ignore EXCL w/o CREAT
                filecreate = OPEN_EXISTING;
                break;

            case _O_CREAT:
                filecreate = OPEN_ALWAYS;
                break;

            case _O_CREAT | _O_EXCL:
            case _O_CREAT | _O_TRUNC | _O_EXCL:
                filecreate = CREATE_NEW;
                break;

            case _O_TRUNC:
            case _O_TRUNC | _O_EXCL:        // ignore EXCL w/o CREAT
                filecreate = TRUNCATE_EXISTING;
                break;

            case _O_CREAT | _O_TRUNC:
                filecreate = CREATE_ALWAYS;
                break;

            default:
                // this can't happen ... all cases are covered
                set_errno(EINVAL);
                return -1;
	}

    /*
     * decode file attribute flags if _O_CREAT was specified
     */
    fileattrib = FILE_ATTRIBUTE_NORMAL;     /* default */

    if ( oflag & _O_CREAT ) 
	{
        /*
         * set up variable argument list stuff
         */
        if ( oflag & _O_RDONLY )
            fileattrib = FILE_ATTRIBUTE_READONLY;
    }

    /*
     * Set temporary file (delete-on-close) attribute if requested.
     */
    if ( oflag & _O_TEMPORARY ) 
	{
        fileattrib |= FILE_FLAG_DELETE_ON_CLOSE;
        fileaccess |= DELETE;
    }

    /*
     * Set temporary file (delay-flush-to-disk) attribute if requested.
     */
    if ( oflag & _O_SHORT_LIVED )
        fileattrib |= FILE_ATTRIBUTE_TEMPORARY;

    /*
     * Set sequential or random access attribute if requested.
     */
    if ( oflag & _O_SEQUENTIAL )
        fileattrib |= FILE_FLAG_SEQUENTIAL_SCAN;
    else if ( oflag & _O_RANDOM )
        fileattrib |= FILE_FLAG_RANDOM_ACCESS;

    /*
     * get an available handle.
     *
     * multi-thread note: the returned handle is locked!
     */
    /*
     * try to open/create the file
     */

    if ( (osfh = CreateFile( A2T(filename),
                             fileaccess,
                             fileshare,
                             NULL,
                             filecreate,
                             fileattrib,
                             NULL ))
         == INVALID_HANDLE_VALUE )
    {
        return -1;                      /* return error to caller */
    }
	return (int)osfh;
}

int _sopen(const char *filename, int oflag , int pmode, ...)
{ 
	return _open(filename, oflag , pmode); 
}

int	_chsize( int nHandle, long size )
{
	if ((DWORD)size!=SetFilePointer((HANDLE)nHandle,size,NULL,FILE_BEGIN)) return -1;
	return (SetEndOfFile((HANDLE)nHandle)) ? 0 : -1;
}


int _mkdir(const char *sDir)
{	
	USES_CONVERSION;
        PString folderName = sDir;

        if (folderName[folderName.GetLength() - 1] == PDIR_SEPARATOR) {
           folderName.Delete(folderName.GetLength() - 1, 1);
        }

        return (CreateDirectory(A2T(folderName),NULL) ? 0 : -1);
}

int  _rmdir(const char *sDir)
{	
	USES_CONVERSION;
        PString folderName = sDir;

        if (folderName[folderName.GetLength() - 1] == PDIR_SEPARATOR) {
            folderName.Delete(folderName.GetLength() - 1, 1);
        }

        return (RemoveDirectory(A2T(folderName)) ? 0 : -1);
}

int  _access(const char *sName, int mode)
{
	USES_CONVERSION;
	WIN32_FIND_DATA FindFileData;

        PString test(sName);
        if (test[test.GetLength() - 1] == '.' && test[test.GetLength() - 2] == PDIR_SEPARATOR)
            test.Delete(test.GetLength() - 2, 2);

        HANDLE file = FindFirstFile(A2T((const char*) test), &FindFileData);
	if (file == INVALID_HANDLE_VALUE ) return -1;
	FindClose(file);
	switch(mode)
	{
		//checking for the existance
		case 0: return 0;
		//checking for read permission
		case 4: return 0;
		//checking for write permission
		case 2: return (FindFileData.dwFileAttributes&FILE_ATTRIBUTE_READONLY) ? -1 : 0;
		//checking for read and write permission
		case 6: return (FindFileData.dwFileAttributes&FILE_ATTRIBUTE_READONLY) ? -1 : 0;
	}
	return -1;
}
int	remove(const char *name)
{
	USES_CONVERSION;
	return (DeleteFile(A2T(name)) ? 0 : -1);
}

int	_chmod( const char *filename, int pmode )
{
	USES_CONVERSION;
	TCHAR* pFileName=A2T(filename);
	DWORD attr = GetFileAttributes(pFileName);
	if (pmode&_S_IWRITE)
		attr|=FILE_ATTRIBUTE_READONLY;
	else
		attr&=~FILE_ATTRIBUTE_READONLY;
	
	return (SetFileAttributes(pFileName,attr) ? 0: -1);	
}

int	rename( const char *oldname, const char *newname )
{
	USES_CONVERSION;
	return (DeleteAndRenameFile( A2T(newname), A2T(oldname)) ? 0 : -1);
}

//used by regex.cxx
void printchar (char n)
{
	printf(" %d ",n);	
}

long strtol (const char *nptr,char **endptr,int ibase)
{
	USES_CONVERSION;
	TCHAR* tnptr = A2T(nptr);
	TCHAR* tendptr = NULL;

	long res= _tcstoul(tnptr,&tendptr,ibase);