DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Doug Turner <dougt@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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 MPL, 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 MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
#include "nsIServiceManager.h"

#include "nsLocalFile.h" // includes platform-specific headers
#include "nsLocalFileUnicode.h"

#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsReadableUtils.h"
#include "nsPrintfCString.h"
#include "nsCRT.h"

#ifdef XP_WIN
#include <string.h>
#endif


void NS_StartupLocalFile()
{
    nsLocalFile::GlobalInit();
}

void NS_ShutdownLocalFile()
{
    nsLocalFile::GlobalShutdown();
}

#if !defined(XP_MAC) && !defined(XP_MACOSX)
NS_IMETHODIMP
nsLocalFile::InitWithFile(nsILocalFile *aFile)
{
    NS_ENSURE_ARG(aFile);
    
    nsCAutoString path;
    aFile->GetNativePath(path);
    if (path.IsEmpty())
        return NS_ERROR_INVALID_ARG;
    return InitWithNativePath(path); 
}
#endif

#if defined(XP_MAC)
#define kMaxFilenameLength 31
#define kMaxExtensionLength 10
#else
#define kMaxFilenameLength 255
#define kMaxExtensionLength 100
#endif  
// requirement: kMaxExtensionLength < kMaxFilenameLength - 4

NS_IMETHODIMP
nsLocalFile::CreateUnique(PRUint32 type, PRUint32 attributes)
{
    nsresult rv = Create(type, attributes);
    if (rv != NS_ERROR_FILE_ALREADY_EXISTS)
        return rv;

    nsCAutoString leafName; 
    rv = GetNativeLeafName(leafName);
    if (NS_FAILED(rv))
        return rv;

    const char* lastDot = strrchr(leafName.get(), '.');
    char suffix[kMaxExtensionLength] = "";
    if (lastDot)
    {
        PL_strncpyz(suffix, lastDot, sizeof(suffix)); // include '.'
        leafName.SetLength(lastDot - leafName.get()); // strip suffix and dot.
    }

    PRUint32 maxRootLength = (kMaxFilenameLength - 4) - strlen(suffix) - 1;

    if (leafName.Length() > maxRootLength)
        leafName.SetLength(maxRootLength);

    for (int indx = 1; indx < 10000; indx++)
    {
        // start with "Picture-1.jpg" after "Picture.jpg" exists
        SetNativeLeafName(leafName +
                          nsPrintfCString("-%d", indx) +
                          nsDependentCString(suffix));

        rv = Create(type, attributes);
        if (NS_SUCCEEDED(rv) || rv != NS_ERROR_FILE_ALREADY_EXISTS) 
            return rv;
    }
 
    // The disk is full, sort of
    return NS_ERROR_FILE_TOO_BIG;
}

#if defined(XP_MAC)
static const PRUnichar kPathSeparatorChar       = ':';
#elif defined(XP_WIN) || defined(XP_OS2)
static const PRUnichar kPathSeparatorChar       = '\\';
#elif defined(XP_UNIX) || defined(XP_BEOS)
static const PRUnichar kPathSeparatorChar       = '/';
#else
#error Need to define file path separator for your platform
#endif

#if defined(XP_MAC)
static const char kSlashStr[] = "/";
static const char kESCSlashStr[] = "%2F";
#endif

static PRInt32 SplitPath(PRUnichar *path, PRUnichar **nodeArray, PRInt32 arrayLen)
{
    if (*path == 0)
      return 0;

    PRUnichar **nodePtr = nodeArray;
    if (*path == kPathSeparatorChar)
      path++;    
    *nodePtr++ = path;
    
    for (PRUnichar *cp = path; *cp != 0; cp++) {
      if (*cp == kPathSeparatorChar) {
        *cp++ = 0;
        if (*cp == 0)
          break;
        if (nodePtr - nodeArray >= arrayLen)
          return -1;
        *nodePtr++ = cp;
      }
    }
    return nodePtr - nodeArray;
}

 
NS_IMETHODIMP
nsLocalFile::GetRelativeDescriptor(nsILocalFile *fromFile, nsACString& _retval)
{
    NS_ENSURE_ARG_POINTER(fromFile);
    const PRInt32 kMaxNodesInPath = 32;

    //
    // _retval will be UTF-8 encoded
    // 
        
    nsresult rv;
    _retval.Truncate(0);

    nsAutoString thisPath, fromPath;
    PRUnichar *thisNodes[kMaxNodesInPath], *fromNodes[kMaxNodesInPath];
    PRInt32  thisNodeCnt, fromNodeCnt, nodeIndex;
    
    rv = GetPath(thisPath);
    if (NS_FAILED(rv))
        return rv;
    rv = fromFile->GetPath(fromPath);
    if (NS_FAILED(rv))
        return rv;

    // get raw pointer to mutable string buffer
    PRUnichar *thisPathPtr; thisPath.BeginWriting(thisPathPtr);
    PRUnichar *fromPathPtr; fromPath.BeginWriting(fromPathPtr);
    
    thisNodeCnt = SplitPath(thisPathPtr, thisNodes, kMaxNodesInPath);
    fromNodeCnt = SplitPath(fromPathPtr, fromNodes, kMaxNodesInPath);
    if (thisNodeCnt < 0 || fromNodeCnt < 0)
      return NS_ERROR_FAILURE;
    
    for (nodeIndex = 0; nodeIndex < thisNodeCnt && nodeIndex < fromNodeCnt; ++nodeIndex) {
#ifdef XP_WIN
      if (_wcsicmp(thisNodes[nodeIndex], fromNodes[nodeIndex]))
        break;
#else
      if (nsCRT::strcmp(thisNodes[nodeIndex], fromNodes[nodeIndex]))
        break;
#endif
    }
    
    PRInt32 branchIndex = nodeIndex;
    for (nodeIndex = branchIndex; nodeIndex < fromNodeCnt; nodeIndex++) 
      _retval.AppendLiteral("../");
    for (nodeIndex = branchIndex; nodeIndex < thisNodeCnt; nodeIndex++) {
      NS_ConvertUCS2toUTF8 nodeStr(thisNodes[nodeIndex]);
#ifdef XP_MAC
      nodeStr.ReplaceSubstring(kSlashStr, kESCSlashStr);
#endif
      _retval.Append(nodeStr);
      if (nodeIndex + 1 < thisNodeCnt)
        _retval.Append('/');
    }
        
    return NS_OK;
}

NS_IMETHODIMP
nsLocalFile::SetRelativeDescriptor(nsILocalFile *fromFile, const nsACString& relativeDesc)
{
    NS_NAMED_LITERAL_CSTRING(kParentDirStr, "../");
 
    nsCOMPtr<nsIFile> targetFile;
    nsresult rv = fromFile->Clone(getter_AddRefs(targetFile));
    if (NS_FAILED(rv))
        return rv;

    //
    // relativeDesc is UTF-8 encoded
    // 

    nsCString::const_iterator strBegin, strEnd;
    relativeDesc.BeginReading(strBegin);
    relativeDesc.EndReading(strEnd);
    
    nsCString::const_iterator nodeBegin(strBegin), nodeEnd(strEnd);
    nsCString::const_iterator pos(strBegin);
    
    nsCOMPtr<nsIFile> parentDir;
    while (FindInReadable(kParentDirStr, nodeBegin, nodeEnd)) {
        rv = targetFile->GetParent(getter_AddRefs(parentDir));
        if (NS_FAILED(rv))
            return rv;
        if (!parentDir)
            return NS_ERROR_FILE_UNRECOGNIZED_PATH;
        targetFile = parentDir;

        nodeBegin = nodeEnd;
        pos = nodeEnd;
        nodeEnd = strEnd;
    }

    nodeBegin = nodeEnd = pos;
    while (nodeEnd != strEnd) {
      FindCharInReadable('/', nodeEnd, strEnd);
#ifdef XP_MAC
      nsCAutoString nodeString(Substring(nodeBegin, nodeEnd));      
      nodeString.ReplaceSubstring(kESCSlashStr, kSlashStr);
      targetFile->Append(NS_ConvertUTF8toUCS2(nodeString));
#else
      targetFile->Append(NS_ConvertUTF8toUCS2(Substring(nodeBegin, nodeEnd)));
#endif
      if (nodeEnd != strEnd) // If there's more left in the string, inc over the '/' nodeEnd is on.
        ++nodeEnd;
      nodeBegin = nodeEnd;
    }

    nsCOMPtr<nsILocalFile> targetLocalFile(do_QueryInterface(targetFile));
    return InitWithFile(targetLocalFile);
}