[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | |
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| 19 | #include "filestream.hh" |
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| 20 | |
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| 21 | using namespace hadoop; |
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| 22 | |
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| 23 | hadoop::FileInStream::FileInStream() |
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| 24 | { |
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| 25 | mFile = NULL; |
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| 26 | } |
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| 27 | |
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| 28 | bool hadoop::FileInStream::open(const std::string& name) |
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| 29 | { |
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| 30 | mFile = fopen(name.c_str(), "rb"); |
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| 31 | return (mFile != NULL); |
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| 32 | } |
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| 33 | |
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| 34 | ssize_t hadoop::FileInStream::read(void *buf, size_t len) |
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| 35 | { |
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| 36 | return fread(buf, 1, len, mFile); |
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| 37 | } |
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| 38 | |
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| 39 | bool hadoop::FileInStream::skip(size_t nbytes) |
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| 40 | { |
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| 41 | return (0==fseek(mFile, nbytes, SEEK_CUR)); |
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| 42 | } |
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| 43 | |
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| 44 | bool hadoop::FileInStream::close() |
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| 45 | { |
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| 46 | int ret = fclose(mFile); |
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| 47 | mFile = NULL; |
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| 48 | return (ret==0); |
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| 49 | } |
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| 50 | |
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| 51 | hadoop::FileInStream::~FileInStream() |
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| 52 | { |
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| 53 | if (mFile != NULL) { |
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| 54 | close(); |
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| 55 | } |
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| 56 | } |
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| 57 | |
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| 58 | hadoop::FileOutStream::FileOutStream() |
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| 59 | { |
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| 60 | mFile = NULL; |
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| 61 | } |
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| 62 | |
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| 63 | bool hadoop::FileOutStream::open(const std::string& name, bool overwrite) |
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| 64 | { |
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| 65 | if (!overwrite) { |
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| 66 | mFile = fopen(name.c_str(), "rb"); |
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| 67 | if (mFile != NULL) { |
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| 68 | fclose(mFile); |
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| 69 | return false; |
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| 70 | } |
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| 71 | } |
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| 72 | mFile = fopen(name.c_str(), "wb"); |
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| 73 | return (mFile != NULL); |
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| 74 | } |
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| 75 | |
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| 76 | ssize_t hadoop::FileOutStream::write(const void* buf, size_t len) |
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| 77 | { |
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| 78 | return fwrite(buf, 1, len, mFile); |
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| 79 | } |
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| 80 | |
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| 81 | bool hadoop::FileOutStream::advance(size_t nbytes) |
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| 82 | { |
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| 83 | return (0==fseek(mFile, nbytes, SEEK_CUR)); |
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| 84 | } |
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| 85 | |
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| 86 | bool hadoop::FileOutStream::close() |
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| 87 | { |
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| 88 | int ret = fclose(mFile); |
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| 89 | mFile = NULL; |
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| 90 | return (ret == 0); |
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| 91 | } |
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| 92 | |
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| 93 | hadoop::FileOutStream::~FileOutStream() |
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| 94 | { |
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| 95 | if (mFile != NULL) { |
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| 96 | close(); |
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| 97 | } |
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| 98 | } |
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