mirror of
https://github.com/mozilla/gecko-dev.git
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225 lines
4.7 KiB
C++
225 lines
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#include "FileLocation.h"
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#include "nsZipArchive.h"
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#include "nsURLHelper.h"
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namespace mozilla {
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FileLocation::FileLocation()
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{
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}
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FileLocation::~FileLocation()
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{
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}
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FileLocation::FileLocation(nsIFile* aFile)
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{
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Init(aFile);
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}
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FileLocation::FileLocation(nsIFile* aFile, const char* aPath)
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{
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Init(aFile, aPath);
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}
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FileLocation::FileLocation(const FileLocation& aFile, const char* aPath)
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{
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if (aFile.IsZip()) {
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if (aFile.mBaseFile) {
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Init(aFile.mBaseFile, aFile.mPath.get());
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}
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else {
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Init(aFile.mBaseZip, aFile.mPath.get());
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}
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if (aPath) {
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int32_t i = mPath.RFindChar('/');
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if (kNotFound == i) {
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mPath.Truncate(0);
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} else {
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mPath.Truncate(i + 1);
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}
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mPath += aPath;
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}
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} else {
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if (aPath) {
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nsCOMPtr<nsIFile> cfile;
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aFile.mBaseFile->GetParent(getter_AddRefs(cfile));
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#if defined(XP_WIN)
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nsAutoCString pathStr(aPath);
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char* p;
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uint32_t len = pathStr.GetMutableData(&p);
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for (; len; ++p, --len) {
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if ('/' == *p) {
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*p = '\\';
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}
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}
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cfile->AppendRelativeNativePath(pathStr);
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#else
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cfile->AppendRelativeNativePath(nsDependentCString(aPath));
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#endif
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Init(cfile);
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} else {
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Init(aFile.mBaseFile);
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}
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}
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}
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void
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FileLocation::Init(nsIFile* aFile)
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{
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mBaseZip = nullptr;
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mBaseFile = aFile;
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mPath.Truncate();
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}
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void
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FileLocation::Init(nsIFile* aFile, const char* aPath)
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{
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mBaseZip = nullptr;
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mBaseFile = aFile;
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mPath = aPath;
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}
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void
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FileLocation::Init(nsZipArchive* aZip, const char* aPath)
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{
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mBaseZip = aZip;
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mBaseFile = nullptr;
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mPath = aPath;
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}
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void
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FileLocation::GetURIString(nsACString& aResult) const
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{
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if (mBaseFile) {
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net_GetURLSpecFromActualFile(mBaseFile, aResult);
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} else if (mBaseZip) {
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RefPtr<nsZipHandle> handler = mBaseZip->GetFD();
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handler->mFile.GetURIString(aResult);
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}
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if (IsZip()) {
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aResult.Insert("jar:", 0);
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aResult += "!/";
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aResult += mPath;
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}
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}
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already_AddRefed<nsIFile>
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FileLocation::GetBaseFile()
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{
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if (IsZip() && mBaseZip) {
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RefPtr<nsZipHandle> handler = mBaseZip->GetFD();
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if (handler) {
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return handler->mFile.GetBaseFile();
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}
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return nullptr;
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}
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nsCOMPtr<nsIFile> file = mBaseFile;
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return file.forget();
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}
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bool
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FileLocation::Equals(const FileLocation& aFile) const
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{
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if (mPath != aFile.mPath) {
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return false;
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}
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if (mBaseFile && aFile.mBaseFile) {
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bool eq;
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return NS_SUCCEEDED(mBaseFile->Equals(aFile.mBaseFile, &eq)) && eq;
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}
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const FileLocation* a = this;
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const FileLocation* b = &aFile;
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if (a->mBaseZip) {
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RefPtr<nsZipHandle> handler = a->mBaseZip->GetFD();
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a = &handler->mFile;
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}
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if (b->mBaseZip) {
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RefPtr<nsZipHandle> handler = b->mBaseZip->GetFD();
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b = &handler->mFile;
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}
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return a->Equals(*b);
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}
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nsresult
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FileLocation::GetData(Data& aData)
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{
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if (!IsZip()) {
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return mBaseFile->OpenNSPRFileDesc(PR_RDONLY, 0444, &aData.mFd.rwget());
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}
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aData.mZip = mBaseZip;
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if (!aData.mZip) {
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aData.mZip = new nsZipArchive();
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aData.mZip->OpenArchive(mBaseFile);
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}
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aData.mItem = aData.mZip->GetItem(mPath.get());
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if (aData.mItem) {
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return NS_OK;
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}
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return NS_ERROR_FILE_UNRECOGNIZED_PATH;
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}
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nsresult
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FileLocation::Data::GetSize(uint32_t* aResult)
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{
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if (mFd) {
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PRFileInfo64 fileInfo;
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if (PR_SUCCESS != PR_GetOpenFileInfo64(mFd, &fileInfo)) {
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return NS_ErrorAccordingToNSPR();
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}
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if (fileInfo.size > int64_t(UINT32_MAX)) {
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return NS_ERROR_FILE_TOO_BIG;
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}
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*aResult = fileInfo.size;
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return NS_OK;
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}
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else if (mItem) {
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*aResult = mItem->RealSize();
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return NS_OK;
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}
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return NS_ERROR_NOT_INITIALIZED;
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}
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nsresult
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FileLocation::Data::Copy(char* aBuf, uint32_t aLen)
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{
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if (mFd) {
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for (uint32_t totalRead = 0; totalRead < aLen;) {
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int32_t read = PR_Read(mFd, aBuf + totalRead,
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XPCOM_MIN(aLen - totalRead, uint32_t(INT32_MAX)));
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if (read < 0) {
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return NS_ErrorAccordingToNSPR();
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}
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totalRead += read;
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}
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return NS_OK;
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}
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else if (mItem) {
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nsZipCursor cursor(mItem, mZip, reinterpret_cast<uint8_t*>(aBuf),
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aLen, true);
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uint32_t readLen;
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cursor.Copy(&readLen);
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if (readLen != aLen) {
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nsZipArchive::sFileCorruptedReason = "FileLocation::Data: insufficient data";
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return NS_ERROR_FILE_CORRUPTED;
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}
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return NS_OK;
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}
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return NS_ERROR_NOT_INITIALIZED;
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}
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} /* namespace mozilla */
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