Move input library code from frameworks/base.
Change-Id: I4983db61b53e28479fc90d9211fafff68f7f49a6
diff --git a/libs/input/VirtualKeyMap.cpp b/libs/input/VirtualKeyMap.cpp
new file mode 100644
index 0000000..28ea717
--- /dev/null
+++ b/libs/input/VirtualKeyMap.cpp
@@ -0,0 +1,172 @@
+/*
+ * 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 <stdlib.h>
+#include <string.h>
+
+#include <input/VirtualKeyMap.h>
+#include <utils/Log.h>
+#include <utils/Errors.h>
+#include <utils/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