netwerk/base/src/nsURLHelperUnix.cpp

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   3 /* ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
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  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
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  16  * The Original Code is mozilla.org code.
  17  *
  18  * The Initial Developer of the Original Code is
  19  * Netscape Communications Corporation.
  20  * Portions created by the Initial Developer are Copyright (C) 1998
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Alec Flett <alecf@netscape.com>
  25  *   Darin Fisher <darin@netscape.com>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
  29  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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  39  * ***** END LICENSE BLOCK ***** */
  40
  41 /* Unix-specific local file uri parsing */
  42 #include "nsURLHelper.h"
  43 #include "nsEscape.h"
  44 #include "nsILocalFile.h"
  45 #include "nsNativeCharsetUtils.h"
  46
  47 nsresult
  48 net_GetURLSpecFromFile(nsIFile *aFile, nsACString &result)
  49 {
  50     nsresult rv;
  51     nsCAutoString nativePath, ePath;
  52     nsAutoString path;
  53
  54     rv = aFile->GetNativePath(nativePath);
  55     if (NS_FAILED(rv)) return rv;
  56
  57     // Convert to unicode and back to check correct conversion to native charset
  58     NS_CopyNativeToUnicode(nativePath, path);
  59     NS_CopyUnicodeToNative(path, ePath);
  60
  61     // Use UTF8 version if conversion was successful
  62     if (nativePath == ePath)
  63         CopyUTF16toUTF8(path, ePath);
  64     else
  65         ePath = nativePath;
  66
  67     nsCAutoString escPath;
  68     NS_NAMED_LITERAL_CSTRING(prefix, "file://");
  69
  70     // Escape the path with the directory mask
  71     if (NS_EscapeURL(ePath.get(), -1, esc_Directory+esc_Forced, escPath))
  72         escPath.Insert(prefix, 0);
  73     else
  74         escPath.Assign(prefix + ePath);
  75
  76     // esc_Directory does not escape the semicolons, so if a filename
  77     // contains semicolons we need to manually escape them.
  78     escPath.ReplaceSubstring(";", "%3b");
  79
  80     // if this file references a directory, then we need to ensure that the
  81     // URL ends with a slash.  this is important since it affects the rules
  82     // for relative URL resolution when this URL is used as a base URL.
  83     // if the file does not exist, then we make no assumption about its type,
  84     // and simply leave the URL unmodified.
  85     if (escPath.Last() != '/') {
  86         PRBool dir;
  87         rv = aFile->IsDirectory(&dir);
  88         if (NS_SUCCEEDED(rv) && dir)
  89             escPath += '/';
  90     }
  91
  92     result = escPath;
  93     return NS_OK;
  94 }
  95
  96 nsresult
  97 net_GetFileFromURLSpec(const nsACString &aURL, nsIFile **result)
  98 {
  99     // NOTE: See also the implementation in nsURLHelperOSX.cpp,
 100     // which is based on this.
 101
 102     nsresult rv;
 103
 104     nsCOMPtr<nsILocalFile> localFile;
 105     rv = NS_NewNativeLocalFile(EmptyCString(), PR_TRUE, getter_AddRefs(localFile));
 106     if (NS_FAILED(rv))
 107       return rv;
 108
 109     nsCAutoString directory, fileBaseName, fileExtension, path;
 110
 111     rv = net_ParseFileURL(aURL, directory, fileBaseName, fileExtension);
 112     if (NS_FAILED(rv)) return rv;
 113
 114     if (!directory.IsEmpty())
 115         NS_EscapeURL(directory, esc_Directory|esc_AlwaysCopy, path);
 116     if (!fileBaseName.IsEmpty())
 117         NS_EscapeURL(fileBaseName, esc_FileBaseName|esc_AlwaysCopy, path);
 118     if (!fileExtension.IsEmpty()) {
 119         path += '.';
 120         NS_EscapeURL(fileExtension, esc_FileExtension|esc_AlwaysCopy, path);
 121     }
 122
 123     NS_UnescapeURL(path);
 124     if (path.Length() != strlen(path.get()))
 125         return NS_ERROR_FILE_INVALID_PATH;
 126
 127     if (IsUTF8(path)) {
 128         // speed up the start-up where UTF-8 is the native charset
 129         // (e.g. on recent Linux distributions)
 130         if (NS_IsNativeUTF8())
 131             rv = localFile->InitWithNativePath(path);
 132         else
 133             rv = localFile->InitWithPath(NS_ConvertUTF8toUTF16(path));
 134             // XXX In rare cases, a valid UTF-8 string can be valid as a native
 135             // encoding (e.g. 0xC5 0x83 is valid both as UTF-8 and Windows-125x).
 136             // However, the chance is very low that a meaningful word in a legacy
 137             // encoding is valid as UTF-8.
 138     }
 139     else
 140         // if path is not in UTF-8, assume it is encoded in the native charset
 141         rv = localFile->InitWithNativePath(path);
 142
 143     if (NS_FAILED(rv)) return rv;
 144
 145     NS_ADDREF(*result = localFile);
 146     return NS_OK;
 147 }