unixfs.cpp

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/*
 * Copyright 2003, 2004 Martin Fuchs
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */


 //
 // Explorer clone
 //
 // unixfs.cpp
 //
 // Martin Fuchs, 23.07.2003
 //


#ifdef __WINE__

#include <precomp.h>

//#include "unixfs.h"

 // for UnixDirectory::read_directory()
#include <dirent.h>
#include <sys/stat.h>
#include <time.h>


void UnixDirectory::read_directory()
{
    Entry* first_entry = NULL;
    Entry* last = NULL;
    Entry* entry;

    int level = _level + 1;

    LPCTSTR path = (LPCTSTR)_path;
    DIR* pdir = opendir(path);

    if (pdir) {
        struct stat st;
        struct dirent* ent;
        TCHAR buffer[MAX_PATH], *p;

        for(p=buffer; *path; )
            *p++ = *path++;

        if (p==buffer || p[-1]!='/')
            *p++ = '/';

        while((ent=readdir(pdir))) {
            int statres = stat(buffer, &st);

            if (!statres && S_ISDIR(st.st_mode))
                entry = new UnixDirectory(this, buffer);
            else
                entry = new UnixEntry(this);

            if (!first_entry)
                first_entry = entry;

            if (last)
                last->_next = entry;

            lstrcpy(entry->_data.cFileName, ent->d_name);
            entry->_data.dwFileAttributes = ent->d_name[0]=='.'? FILE_ATTRIBUTE_HIDDEN: 0;

            strcpy(p, ent->d_name);

            if (!statres) {
                if (S_ISDIR(st.st_mode))
                    entry->_data.dwFileAttributes |= FILE_ATTRIBUTE_DIRECTORY;

                entry->_data.nFileSizeLow = st.st_size & 0xFFFFFFFF;
                entry->_data.nFileSizeHigh = st.st_size >> 32;

                memset(&entry->_data.ftCreationTime, 0, sizeof(FILETIME));
                time_to_filetime(&st.st_atime, &entry->_data.ftLastAccessTime);
                time_to_filetime(&st.st_mtime, &entry->_data.ftLastWriteTime);

                entry->_bhfi.nFileIndexLow = ent->d_ino;
                entry->_bhfi.nFileIndexHigh = 0;

                entry->_bhfi.nNumberOfLinks = st.st_nlink;

                entry->_bhfi_valid = TRUE;
            } else {
                entry->_data.nFileSizeLow = 0;
                entry->_data.nFileSizeHigh = 0;
                entry->_bhfi_valid = FALSE;
            }

            entry->_up = this;
            entry->_expanded = FALSE;
            entry->_scanned = FALSE;
            entry->_level = level;

            last = entry;
        }

        last->_next = NULL;

        closedir(pdir);
    }

    _down = first_entry;
    _scanned = true;
}


const void* UnixDirectory::get_next_path_component(const void* p)
{
    LPCTSTR s = (LPCTSTR) p;

    while(*s && *s!=TEXT('/'))
        ++s;

    while(*s == TEXT('/'))
        ++s;

    if (!*s)
        return NULL;

    return s;
}


Entry* UnixDirectory::find_entry(const void* p)
{
    LPCTSTR name = (LPCTSTR)p;

    for(Entry*entry=_down; entry; entry=entry->_next) {
        LPCTSTR p = name;
        LPCTSTR q = entry->_data.cFileName;

        do {
            if (!*p || *p==TEXT('/'))
                return entry;
        } while(*p++ == *q++);
    }

    return NULL;
}


 // get full path of specified directory entry
bool UnixEntry::get_path(PTSTR path, size_t path_count) const
{
    int level = 0;
    size_t len = 0;

    if (!path || path_count==0)
        return false;

    if ( path_count > 1 )
    {
        for(const Entry* entry=this; entry; level++) {
            LPCTSTR name = entry->_data.cFileName;
            size_t l = 0;

            for(LPCTSTR s=name; *s && *s!=TEXT('/'); s++)
                ++l;

            if (entry->_up) {
                if (l > 0) {
                    if ( len+l+1 >= path_count )
                    {
                        /* compare to 2 here because of terminator plus the '\\' we prepend */
                        if ( l + 2 > path_count )
                            len = 0;
                        else
                            len = path_count - l - 2;
                    }
                    memmove(path+l+1, path, len*sizeof(TCHAR));
                    /* compare to 2 here because of terminator plus the '\\' we prepend */
                    if ( l+2 >= path_count )
                        l = path_count - 2;
                    memcpy(path+1, name, l*sizeof(TCHAR));
                    len += l+1;

                    path[0] = TEXT('/');
                }

                entry = entry->_up;
            } else {
                if ( len+l >= path_count )
                {
                    if ( l + 1 > path_count )
                        len = 0;
                    else
                        len = path_count - l - 1;
                }
                memmove(path+l, path, len*sizeof(TCHAR));
                if ( l+1 >= path_count )
                    l = path_count - 1;
                memcpy(path, name, l*sizeof(TCHAR));
                len += l;
                break;
            }
        }

        if ( !level && (len+1 < path_count) )
            path[len++] = TEXT('/');
    }

    path[len] = TEXT('\0');

    return true;
}

#endif // __WINE__