The Tor Browser: widget/gonk/libui/VirtualKeyMap.cpp@6474c204b198 (annotated)

widget/gonk/libui/VirtualKeyMap.cpp@6474c204b198 (annotated)

widget/gonk/libui/VirtualKeyMap.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * 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 "VirtualKeyMap"
 #include "cutils_log.h"
 #include <stdlib.h>
 #include <string.h>
 #include "VirtualKeyMap.h"
 #include <utils/Errors.h>
 #include "Tokenizer.h"
 #include <utils/Timers.h>
 // Enables debug output for the parser.
 #define DEBUG_PARSER 0
 // Enables debug output for parser performance.
 #define DEBUG_PARSER_PERFORMANCE 0
 namespace android {
 static const char* WHITESPACE = " \t\r";
 static const char* WHITESPACE_OR_FIELD_DELIMITER = " \t\r:";
 // --- VirtualKeyMap ---
 VirtualKeyMap::VirtualKeyMap() {
 }
 VirtualKeyMap::~VirtualKeyMap() {
 }
 status_t VirtualKeyMap::load(const String8& filename, VirtualKeyMap** outMap) {
     *outMap = NULL;
     Tokenizer* tokenizer;
     status_t status = Tokenizer::open(filename, &tokenizer);
     if (status) {
         ALOGE("Error %d opening virtual key map file %s.", status, filename.string());
     } else {
         VirtualKeyMap* map = new VirtualKeyMap();
         if (!map) {
             ALOGE("Error allocating virtual key map.");
             status = NO_MEMORY;
         } else {
 #if DEBUG_PARSER_PERFORMANCE
             nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC);
 #endif
             Parser parser(map, tokenizer);
             status = parser.parse();
 #if DEBUG_PARSER_PERFORMANCE
             nsecs_t elapsedTime = systemTime(SYSTEM_TIME_MONOTONIC) - startTime;
             ALOGD("Parsed key character map file '%s' %d lines in %0.3fms.",
                     tokenizer->getFilename().string(), tokenizer->getLineNumber(),
                     elapsedTime / 1000000.0);
 #endif
             if (status) {
                 delete map;
             } else {
                 *outMap = map;
             }
         }
         delete tokenizer;
     }
     return status;
 }
 // --- VirtualKeyMap::Parser ---
 VirtualKeyMap::Parser::Parser(VirtualKeyMap* map, Tokenizer* tokenizer) :
         mMap(map), mTokenizer(tokenizer) {
 }
 VirtualKeyMap::Parser::~Parser() {
 }
 status_t VirtualKeyMap::Parser::parse() {
     while (!mTokenizer->isEof()) {
 #if DEBUG_PARSER
         ALOGD("Parsing %s: '%s'.", mTokenizer->getLocation().string(),
                 mTokenizer->peekRemainderOfLine().string());
 #endif
         mTokenizer->skipDelimiters(WHITESPACE);
         if (!mTokenizer->isEol() && mTokenizer->peekChar() != '#') {
             // Multiple keys can appear on one line or they can be broken up across multiple lines.
             do {
                 String8 token = mTokenizer->nextToken(WHITESPACE_OR_FIELD_DELIMITER);
                 if (token != "0x01") {
                     ALOGE("%s: Unknown virtual key type, expected 0x01.",
                           mTokenizer->getLocation().string());
                     return BAD_VALUE;
                 }
                 VirtualKeyDefinition defn;
                 bool success = parseNextIntField(&defn.scanCode)
                         && parseNextIntField(&defn.centerX)
                         && parseNextIntField(&defn.centerY)
                         && parseNextIntField(&defn.width)
                         && parseNextIntField(&defn.height);
                 if (!success) {
                     ALOGE("%s: Expected 5 colon-delimited integers in virtual key definition.",
                           mTokenizer->getLocation().string());
                     return BAD_VALUE;
                 }
 #if DEBUG_PARSER
                 ALOGD("Parsed virtual key: scanCode=%d, centerX=%d, centerY=%d, "
                         "width=%d, height=%d",
                         defn.scanCode, defn.centerX, defn.centerY, defn.width, defn.height);
 #endif
                 mMap->mVirtualKeys.push(defn);
             } while (consumeFieldDelimiterAndSkipWhitespace());
             if (!mTokenizer->isEol()) {
                 ALOGE("%s: Expected end of line, got '%s'.",
                         mTokenizer->getLocation().string(),
                         mTokenizer->peekRemainderOfLine().string());
                 return BAD_VALUE;
             }
         }
         mTokenizer->nextLine();
     }
     return NO_ERROR;
 }
 bool VirtualKeyMap::Parser::consumeFieldDelimiterAndSkipWhitespace() {
     mTokenizer->skipDelimiters(WHITESPACE);
     if (mTokenizer->peekChar() == ':') {
         mTokenizer->nextChar();
         mTokenizer->skipDelimiters(WHITESPACE);
         return true;
     }
     return false;
 }
 bool VirtualKeyMap::Parser::parseNextIntField(int32_t* outValue) {
     if (!consumeFieldDelimiterAndSkipWhitespace()) {
         return false;
     }
     String8 token = mTokenizer->nextToken(WHITESPACE_OR_FIELD_DELIMITER);
     char* end;
     *outValue = strtol(token.string(), &end, 0);
     if (token.isEmpty() || *end != '\0') {
         ALOGE("Expected an integer, got '%s'.", token.string());
         return false;
     }
     return true;
 }
 } // namespace android

The Tor Browser / annotate

widget/gonk/libui/VirtualKeyMap.cpp@6474c204b198 (annotated)

widget/gonk/libui/VirtualKeyMap.cpp