mirror of
https://github.com/mozilla/gecko-dev.git
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110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=4 sw=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Unix-specific local file uri parsing */
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#include "nsURLHelper.h"
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#include "nsEscape.h"
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#include "nsIFile.h"
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#include "nsNativeCharsetUtils.h"
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#include "mozilla/Utf8.h"
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using mozilla::IsUtf8;
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nsresult net_GetURLSpecFromActualFile(nsIFile* aFile, nsACString& result) {
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nsresult rv;
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nsAutoCString nativePath, ePath;
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nsAutoString path;
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rv = aFile->GetNativePath(nativePath);
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if (NS_FAILED(rv)) return rv;
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// Convert to unicode and back to check correct conversion to native charset
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NS_CopyNativeToUnicode(nativePath, path);
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NS_CopyUnicodeToNative(path, ePath);
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// Use UTF8 version if conversion was successful
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if (nativePath == ePath) {
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CopyUTF16toUTF8(path, ePath);
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} else {
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ePath = nativePath;
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}
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nsAutoCString escPath;
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constexpr auto prefix = "file://"_ns;
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// Escape the path with the directory mask
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if (NS_EscapeURL(ePath.get(), -1, esc_Directory + esc_Forced, escPath)) {
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escPath.Insert(prefix, 0);
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} else {
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escPath.Assign(prefix + ePath);
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}
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// esc_Directory does not escape the semicolons, so if a filename
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// contains semicolons we need to manually escape them.
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// This replacement should be removed in bug #473280
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escPath.ReplaceSubstring(";", "%3b");
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result = escPath;
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return NS_OK;
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}
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nsresult net_GetFileFromURLSpec(const nsACString& aURL, nsIFile** result) {
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// NOTE: See also the implementation in nsURLHelperOSX.cpp,
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// which is based on this.
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nsresult rv;
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nsCOMPtr<nsIFile> localFile;
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rv = NS_NewNativeLocalFile(""_ns, true, getter_AddRefs(localFile));
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if (NS_FAILED(rv)) return rv;
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nsAutoCString directory, fileBaseName, fileExtension, path;
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rv = net_ParseFileURL(aURL, directory, fileBaseName, fileExtension);
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if (NS_FAILED(rv)) return rv;
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if (!directory.IsEmpty()) {
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rv = NS_EscapeURL(directory, esc_Directory | esc_AlwaysCopy, path,
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mozilla::fallible);
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if (NS_FAILED(rv)) return rv;
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}
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if (!fileBaseName.IsEmpty()) {
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rv = NS_EscapeURL(fileBaseName, esc_FileBaseName | esc_AlwaysCopy, path,
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mozilla::fallible);
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if (NS_FAILED(rv)) return rv;
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}
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if (!fileExtension.IsEmpty()) {
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path += '.';
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rv = NS_EscapeURL(fileExtension, esc_FileExtension | esc_AlwaysCopy, path,
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mozilla::fallible);
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if (NS_FAILED(rv)) return rv;
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}
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NS_UnescapeURL(path);
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if (path.Length() != strlen(path.get())) return NS_ERROR_FILE_INVALID_PATH;
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if (IsUtf8(path)) {
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// speed up the start-up where UTF-8 is the native charset
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// (e.g. on recent Linux distributions)
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if (NS_IsNativeUTF8()) {
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rv = localFile->InitWithNativePath(path);
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} else {
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rv = localFile->InitWithPath(NS_ConvertUTF8toUTF16(path));
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}
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// XXX In rare cases, a valid UTF-8 string can be valid as a native
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// encoding (e.g. 0xC5 0x83 is valid both as UTF-8 and Windows-125x).
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// However, the chance is very low that a meaningful word in a legacy
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// encoding is valid as UTF-8.
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} else {
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// if path is not in UTF-8, assume it is encoded in the native charset
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rv = localFile->InitWithNativePath(path);
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}
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if (NS_FAILED(rv)) return rv;
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localFile.forget(result);
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return NS_OK;
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}
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