/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim:set ts=4 sw=4 et cindent: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* Unix-specific local file uri parsing */

#include "nsURLHelper.h"

#include "nsEscape.h"

#include "nsIFile.h"

#include "nsNativeCharsetUtils.h"

nsresult

net_GetURLSpecFromActualFile(nsIFile *aFile, nsACString &result)

{

    nsresult rv;

    nsAutoCString nativePath, ePath;

    nsAutoString path;

    rv = aFile->GetNativePath(nativePath);

    if (NS_FAILED(rv)) return rv;

    // Convert to unicode and back to check correct conversion to native charset

    NS_CopyNativeToUnicode(nativePath, path);

    NS_CopyUnicodeToNative(path, ePath);

    // Use UTF8 version if conversion was successful

    if (nativePath == ePath)

        CopyUTF16toUTF8(path, ePath);

    else

        ePath = nativePath;

    nsAutoCString escPath;

    NS_NAMED_LITERAL_CSTRING(prefix, "file://");

    // Escape the path with the directory mask

    if (NS_EscapeURL(ePath.get(), -1, esc_Directory+esc_Forced, escPath))

        escPath.Insert(prefix, 0);

    else

        escPath.Assign(prefix + ePath);

    // esc_Directory does not escape the semicolons, so if a filename

    // contains semicolons we need to manually escape them.

    // This replacement should be removed in bug #473280

    escPath.ReplaceSubstring(";", "%3b");

    result = escPath;

    return NS_OK;

}

nsresult

net_GetFileFromURLSpec(const nsACString &aURL, nsIFile **result)

{

    // NOTE: See also the implementation in nsURLHelperOSX.cpp,

    // which is based on this.

    nsresult rv;

    nsCOMPtr<nsIFile> localFile;

    rv = NS_NewNativeLocalFile(EmptyCString(), true, getter_AddRefs(localFile));

    if (NS_FAILED(rv))

      return rv;

    nsAutoCString directory, fileBaseName, fileExtension, path;

    rv = net_ParseFileURL(aURL, directory, fileBaseName, fileExtension);

    if (NS_FAILED(rv)) return rv;

    if (!directory.IsEmpty()) {

        rv = NS_EscapeURL(directory, esc_Directory|esc_AlwaysCopy, path,

                         mozilla::fallible);

        if (NS_FAILED(rv))

          return rv;

    }

    if (!fileBaseName.IsEmpty()) {

        rv = NS_EscapeURL(fileBaseName, esc_FileBaseName|esc_AlwaysCopy, path,

                          mozilla::fallible);

        if (NS_FAILED(rv))

          return rv;

    }

    if (!fileExtension.IsEmpty()) {

        path += '.';

        rv = NS_EscapeURL(fileExtension, esc_FileExtension|esc_AlwaysCopy, path,

                          mozilla::fallible);

        if (NS_FAILED(rv))

          return rv;

    }

    NS_UnescapeURL(path);

    if (path.Length() != strlen(path.get()))

        return NS_ERROR_FILE_INVALID_PATH;

    if (IsUTF8(path)) {

        // speed up the start-up where UTF-8 is the native charset

        // (e.g. on recent Linux distributions)

        if (NS_IsNativeUTF8())

            rv = localFile->InitWithNativePath(path);

        else

            rv = localFile->InitWithPath(NS_ConvertUTF8toUTF16(path));

            // XXX In rare cases, a valid UTF-8 string can be valid as a native

            // encoding (e.g. 0xC5 0x83 is valid both as UTF-8 and Windows-125x).

            // However, the chance is very low that a meaningful word in a legacy

            // encoding is valid as UTF-8.

    }

    else

        // if path is not in UTF-8, assume it is encoded in the native charset

        rv = localFile->InitWithNativePath(path);

    if (NS_FAILED(rv)) return rv;

    localFile.forget(result);

    return NS_OK;

}