pathnmex.cpp

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// $Id: pathnmex.cpp 836 2006-04-18 16:06:15Z gerry $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

This file is part of Xara LX.

Xara LX is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as published
by the Free Software Foundation.

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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

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Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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-----------------

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The additional rights are to use, modify, and distribute the software
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=================================XARAHEADEREND============================
 */
#include "camtypes.h"

#include "camelot.h"
#include "pathnmex.h"
//#include "webster.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

#if defined(__WXMSW__)
#include <io.h>
#include <direct.h>
#include <process.h>

const TCHAR             chPathSep = _T('\\');
#else
const TCHAR             chPathSep = _T('/');
#endif

/********************************************************************************************

  > BOOL PathNameEx::CreateLocation()

    Author:     Adrian_Stoicar (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/11/96
    Inputs:     none 
    Return:     TRUE if successful, FALSE otherwise
    Purpose:    Creates the full directory path (as returned by GetLocation()) 
                    on the physical medium. This is useful when creating new
                    directory structures.
             
    
********************************************************************************************/

BOOL PathNameEx::CreateLocation()
{
    PORTNOTETRACE("other","PathNameEx::CreateLocation - do nothing");
#ifndef EXCLUDE_FROM_XARALX
    if (!IsValid())
        return FALSE;
    
    // We'll walk the location string from left to right - if we come across non-existent directories,
    // we create them
    String_256          strLocation = GetLocation(FALSE);
    String_256          strDirPath = drivename;
    INT32                   nPos =  drivename.Length(); // start after the drivename
    while( nPos < strLocation.Length() )
    {
        while( ( strLocation[nPos] != chPathSep ) && ( nPos < strLocation.Length() ) )
        {
            strDirPath += strLocation[nPos];
            nPos++;
        }
        // strDirPath has been added a directory, we check if it exists
        
        if (_access((TCHAR*) strDirPath, 0) == -1) // not found, try to create the directory
        {
            if (_mkdir((TCHAR*) strDirPath))
            {
#ifdef _DEBUG
                TCHAR szMsg[256];
                TCHAR szError[128];
                switch (errno)
                {
                    case EACCES:
                        camStrcpy(szError, "access denied (EACCES)");
                        break;
                    case ENOENT:
                        camStrcpy(szError, "path not found (ENOENT)");
                        break;
                    default:
                        wsprintf(szError, "errno = %d", errno);
                }
                wsprintf(szMsg, "Create directory %s failed, %s", strDirPath, szError);
                ERROR3(szMsg);
#endif
                return FALSE;
            }
        }
        strDirPath += chPathSep; // add a backslash in case there are further subdirectories  
        nPos++; // move to the next position
    }
#endif
    return TRUE;
}



/********************************************************************************************

  > BOOL PathNameEx::RemoveRecursively()

    Author:     Adrian_Stoicar (Xara Group Ltd) <camelotdev@xara.com>
    Created:    18/11/96
    Inputs:     none 
    Return:     TRUE if the path is completely deleted, FALSE otherwise (access denied
                    or invalid parameters). In case some files cannot be removed, the function will
                    do its best to remove the all accessible ones without falling over, unlike the 
                    NT system call RMDIR which stops at the first file it can't delete.
    Purpose:    Removes a file or a whole directory tree from the the physical medium (in
                    which case, the object should be pointing to the root directory of the tree 
                    you want deleted)
             
    
********************************************************************************************/


BOOL PathNameEx::RemoveRecursively(const String_256& rPath)
{
    PORTNOTETRACE("other","PathNameEx::RemoveRecursively - do nothing");
#ifndef EXCLUDE_FROM_XARALX
    String_256 strFilename(rPath);
    strFilename.toLower();
    // See if the path points to a file (the easy case) or a directory
    if (strFilename[strFilename.Length() - 1] == chPathSep)
    {
        strFilename.Remove(strFilename.Length() - 1, 1);
        goto DIRECTORY;
    }
    struct _stat fileData;
    if (_stat((TCHAR*) strFilename, &fileData))
    {
        if (errno == ENOENT)
        {
            ERROR3("Filename or path not found");
        }
        else
        {
            ERROR3("_stat() failed with an unknown error");
        }
        return FALSE;
    }
    if (fileData.st_mode & _S_IFDIR) // directory
    {
DIRECTORY:
        // Make sure the directory is not the current one
        TCHAR tchbuff[_MAX_PATH];
        if (_getcwd(tchbuff, _MAX_PATH) == NULL)
        {
            ERROR3("Can't get working directory");
            return FALSE;
        }
        if (strstr(_strlwr(tchbuff), (TCHAR*) strFilename))
        {
            // change to upper dir (we should never attempt to delete the root directory!)
            PathName path(strFilename);
            if (_chdir((TCHAR*) String_256(path.GetLocation(FALSE))))
            {
                ERROR3("Can't change directory");
                return FALSE;
            }
        }
        // Try to remove it in the hope that it's empty
        if (_rmdir((TCHAR*) strFilename) == -1)
        {
            if (errno == ENOTEMPTY || errno == EACCES)
            {
                _finddata_t findData;
                String_256 strSearchPattern(strFilename);
                strSearchPattern += chPathSep;
                strSearchPattern += _T("*"); // add wildcard
                INT32 hSearch = _findfirst(strSearchPattern, &findData);
                if (hSearch == -1)
                    return FALSE;
                do
                {
                    if (!(strcmp(findData.name, _T(".")) &&  strcmp(findData.name, _T(".."))))
                        continue; // skip this directory (.) or its parent (..)
                    String_256 strFoundFile(strFilename);
                    strFoundFile += chPathSep; 
                    strFoundFile += findData.name;
                    RemoveRecursively(strFoundFile);
                }
                while (_findnext(hSearch, &findData) == 0);
                _findclose(hSearch);
                return (_rmdir((TCHAR*) strFilename) != -1);
            }
            else
            {
                return FALSE; // probably invalid path
            }
        }
        else
            return TRUE; // succedded
    }
    else if (fileData.st_mode & _S_IFREG) // file
        return (remove((TCHAR*) strFilename) != -1);
    else
#endif
        return FALSE;
}

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