The Tor Browser: widget/gonk/libui/Tokenizer.cpp@fc2d59ddac77 (annotated)

widget/gonk/libui/Tokenizer.cpp@fc2d59ddac77 (annotated)

widget/gonk/libui/Tokenizer.cpp

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /*
  * Copyright (C) 2010 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 #define LOG_TAG "Tokenizer"
 #include "cutils_log.h"
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include "Tokenizer.h"
 // Enables debug output for the tokenizer.
 #define DEBUG_TOKENIZER 0
 namespace android {
 static inline bool isDelimiter(char ch, const char* delimiters) {
     return strchr(delimiters, ch) != NULL;
 }
 Tokenizer::Tokenizer(const String8& filename, FileMap* fileMap, char* buffer,
         bool ownBuffer, size_t length) :
         mFilename(filename), mFileMap(fileMap),
         mBuffer(buffer), mOwnBuffer(ownBuffer), mLength(length),
         mCurrent(buffer), mLineNumber(1) {
 }
 Tokenizer::~Tokenizer() {
     if (mFileMap) {
         mFileMap->release();
     }
     if (mOwnBuffer) {
         delete[] mBuffer;
     }
 }
 status_t Tokenizer::open(const String8& filename, Tokenizer** outTokenizer) {
     *outTokenizer = NULL;
     int result = NO_ERROR;
     int fd = ::open(filename.string(), O_RDONLY);
     if (fd < 0) {
         result = -errno;
         ALOGE("Error opening file '%s', %s.", filename.string(), strerror(errno));
     } else {
         struct stat stat;
         if (fstat(fd, &stat)) {
             result = -errno;
             ALOGE("Error getting size of file '%s', %s.", filename.string(), strerror(errno));
         } else {
             size_t length = size_t(stat.st_size);
             FileMap* fileMap = new FileMap();
             bool ownBuffer = false;
             char* buffer;
             if (fileMap->create(NULL, fd, 0, length, true)) {
                 fileMap->advise(FileMap::SEQUENTIAL);
                 buffer = static_cast<char*>(fileMap->getDataPtr());
             } else {
                 fileMap->release();
                 fileMap = NULL;
                 // Fall back to reading into a buffer since we can't mmap files in sysfs.
                 // The length we obtained from stat is wrong too (it will always be 4096)
                 // so we must trust that read will read the entire file.
                 buffer = new char[length];
                 ownBuffer = true;
                 ssize_t nrd = read(fd, buffer, length);
                 if (nrd < 0) {
                     result = -errno;
                     ALOGE("Error reading file '%s', %s.", filename.string(), strerror(errno));
                     delete[] buffer;
                     buffer = NULL;
                 } else {
                     length = size_t(nrd);
                 }
             }
             if (!result) {
                 *outTokenizer = new Tokenizer(filename, fileMap, buffer, ownBuffer, length);
             }
         }
         close(fd);
     }
     return result;
 }
 status_t Tokenizer::fromContents(const String8& filename,
         const char* contents, Tokenizer** outTokenizer) {
     *outTokenizer = new Tokenizer(filename, NULL,
             const_cast<char*>(contents), false, strlen(contents));
     return OK;
 }
 String8 Tokenizer::getLocation() const {
     String8 result;
     result.appendFormat("%s:%d", mFilename.string(), mLineNumber);
     return result;
 }
 String8 Tokenizer::peekRemainderOfLine() const {
     const char* end = getEnd();
     const char* eol = mCurrent;
     while (eol != end) {
         char ch = *eol;
         if (ch == '\n') {
             break;
         }
         eol += 1;
     }
     return String8(mCurrent, eol - mCurrent);
 }
 String8 Tokenizer::nextToken(const char* delimiters) {
 #if DEBUG_TOKENIZER
     ALOGD("nextToken");
 #endif
     const char* end = getEnd();
     const char* tokenStart = mCurrent;
     while (mCurrent != end) {
         char ch = *mCurrent;
         if (ch == '\n' || isDelimiter(ch, delimiters)) {
             break;
         }
         mCurrent += 1;
     }
     return String8(tokenStart, mCurrent - tokenStart);
 }
 void Tokenizer::nextLine() {
 #if DEBUG_TOKENIZER
     ALOGD("nextLine");
 #endif
     const char* end = getEnd();
     while (mCurrent != end) {
         char ch = *(mCurrent++);
         if (ch == '\n') {
             mLineNumber += 1;
             break;
         }
     }
 }
 void Tokenizer::skipDelimiters(const char* delimiters) {
 #if DEBUG_TOKENIZER
     ALOGD("skipDelimiters");
 #endif
     const char* end = getEnd();
     while (mCurrent != end) {
         char ch = *mCurrent;
         if (ch == '\n' || !isDelimiter(ch, delimiters)) {
             break;
         }
         mCurrent += 1;
     }
 }
 } // namespace android

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widget/gonk/libui/Tokenizer.cpp@fc2d59ddac77 (annotated)

widget/gonk/libui/Tokenizer.cpp