/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the NPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsIOService.h"
#include "nsEscape.h"
#include "nsPrintfCString.h"

static void SwapSlashColon(char * s)
{
    while (*s){
        if (*s == '/')
            *s++ = ':';
        else if (*s == ':')
            *s++ = '/';
        else
            *s++;
    }
} 

static void PascalStringCopy(Str255 dst, const char* src)
{
    int srcLength = strlen(src);
    NS_ASSERTION(srcLength <= 255, "Oops, Str255 can't hold >255 chars");
    if (srcLength > 255)
        srcLength = 255;
    dst[0] = srcLength;
    memcpy(&dst[1], src, srcLength);
}


NS_IMETHODIMP nsIOService::GetURLSpecFromFile(nsIFile* aFile, char * *aURL)
{
     NS_ENSURE_ARG_POINTER(aURL);
     *aURL = nsnull;
     
     nsresult rv;
     char* ePath = nsnull;
     nsCAutoString escPath;
 
     rv = aFile->GetPath(&ePath);
     if (NS_SUCCEEDED(rv)) {
 
         SwapSlashColon(ePath);
         
         // Escape the path with the directory mask
         rv = nsStdEscape(ePath, esc_Directory+esc_Forced, escPath);
         if (NS_SUCCEEDED(rv)) {

             if (escPath[escPath.Length() - 1] != '/') {
 
                 PRBool dir;
                 rv = aFile->IsDirectory(&dir);

                 if (NS_FAILED(rv))
                     NS_WARNING(nsPrintfCString("Cannot tell if %s is a directory or file", escPath.get()).get());
                 
                 if (NS_SUCCEEDED(rv) && dir)
                     // make sure we have a trailing slash
                     escPath += "/";
             }
             
             escPath.Insert("file:///", 0);
             *aURL = ToNewCString(escPath);
             rv = *aURL ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
         }
     }
     CRTFREEIF(ePath);
     return rv;
}

NS_IMETHODIMP nsIOService::InitFileFromURLSpec(nsIFile* aFile, const char * aURL)
{
     NS_ENSURE_ARG(aURL);
     nsresult rv;
     
     nsXPIDLCString host, directory, fileBaseName, fileExtension;
    
     nsCOMPtr<nsILocalFile> localFile = do_QueryInterface(aFile, &rv);
     NS_ASSERTION(NS_SUCCEEDED(rv), "Only nsILocalFile supported right now");
     if (NS_FAILED(rv)) return rv;
     
     rv = ParseFileURL(aURL, getter_Copies(host), getter_Copies(directory),
                       getter_Copies(fileBaseName), getter_Copies(fileExtension));
     if (NS_FAILED(rv)) return rv;
                   
     nsCAutoString path;
     nsCAutoString component;
 
     if (host)
     {
         // We can end up with a host when given: file:// instead of file:///
         // Check to see if the host is a volume name - If so prepend it
         Str255 volName;
         FSSpec volSpec;
         
         PascalStringCopy(volName, host);
         volName[++volName[0]] = ':';
         if (::FSMakeFSSpec(0, 0, volName, &volSpec) == noErr)
             path += host;
     }
     if (directory)
     {
         nsStdEscape(directory, esc_Directory, component);
         path += component;
         SwapSlashColon((char*)path.get());
     }
     if (fileBaseName)
     {
         nsStdEscape(fileBaseName, esc_FileBaseName, component);
         path += component;
     }
     if (fileExtension)
     {
         nsStdEscape(fileExtension, esc_FileExtension, component);
         path += '.';
         path += component;
     }
     
     nsUnescape((char*)path.get());
 
     // wack off leading :'s
     if (path.CharAt(0) == ':')
         path.Cut(0, 1);
 
     rv = localFile->InitWithPath(path.get());
          
     return rv;

}