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110 lines
2.9 KiB
110 lines
2.9 KiB
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "ReadWriteUtils"
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#include <utils/Log.h>
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#include <ReadWriteUtils.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <utils/String8.h>
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using namespace android;
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#define FAILURE (-1)
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String8 ReadWriteUtils::readBytes(const String8& filePath) {
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FILE* file = NULL;
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file = fopen(filePath.string(), "r");
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String8 string("");
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if (NULL != file) {
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int fd = fileno(file);
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struct stat sb;
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if (fstat(fd, &sb) == 0 && sb.st_size > 0) {
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off64_t length = sb.st_size;
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char* bytes = new char[length];
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if (length == read(fd, (void*) bytes, length)) {
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string.append(bytes, length);
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}
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delete[] bytes;
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}
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fclose(file);
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}
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return string;
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}
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int ReadWriteUtils::readBytes(const String8& filePath, char** buffer) {
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FILE* file = NULL;
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file = fopen(filePath.string(), "r");
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off64_t length = 0;
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if (NULL != file) {
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int fd = fileno(file);
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struct stat sb;
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if (fstat(fd, &sb) == 0 && sb.st_size > 0) {
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length = sb.st_size;
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*buffer = new char[length];
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if (length != read(fd, (void*) *buffer, length)) {
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length = FAILURE;
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}
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}
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fclose(file);
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}
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return length;
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}
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void ReadWriteUtils::writeToFile(const String8& filePath, const String8& data) {
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FILE* file = NULL;
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file = fopen(filePath.string(), "w+");
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if (NULL != file) {
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int fd = fileno(file);
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int size = data.size();
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if (FAILURE != ftruncate(fd, size)) {
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if (size != write(fd, data.string(), size)) {
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ALOGE("Failed to write the data to: %s", filePath.string());
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}
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}
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fclose(file);
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}
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}
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void ReadWriteUtils::appendToFile(const String8& filePath, const String8& data) {
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FILE* file = NULL;
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file = fopen(filePath.string(), "a+");
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if (NULL != file) {
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int fd = fileno(file);
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int size = data.size();
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if (size != write(fd, data.string(), size)) {
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ALOGE("Failed to write the data to: %s", filePath.string());
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}
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fclose(file);
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}
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}
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