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Dependencies:   DS1307 TextLCD mbed

NetServices/services/http/client/data/HTTPFile.cpp@0:f615d151a72c, 2014-12-04 (annotated)

Committer:
Michielber
Date:
Thu Dec 04 10:36:40 2014 +0000
Revision:
0:f615d151a72c
Berckvens Michiel & Basteyns Jonas 4/12/2014

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michielber 0:f615d151a72c 1
Michielber 0:f615d151a72c 2 /*
Michielber 0:f615d151a72c 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
Michielber 0:f615d151a72c 4
Michielber 0:f615d151a72c 5 Permission is hereby granted, free of charge, to any person obtaining a copy
Michielber 0:f615d151a72c 6 of this software and associated documentation files (the "Software"), to deal
Michielber 0:f615d151a72c 7 in the Software without restriction, including without limitation the rights
Michielber 0:f615d151a72c 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Michielber 0:f615d151a72c 9 copies of the Software, and to permit persons to whom the Software is
Michielber 0:f615d151a72c 10 furnished to do so, subject to the following conditions:
Michielber 0:f615d151a72c 11
Michielber 0:f615d151a72c 12 The above copyright notice and this permission notice shall be included in
Michielber 0:f615d151a72c 13 all copies or substantial portions of the Software.
Michielber 0:f615d151a72c 14
Michielber 0:f615d151a72c 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Michielber 0:f615d151a72c 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Michielber 0:f615d151a72c 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Michielber 0:f615d151a72c 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Michielber 0:f615d151a72c 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Michielber 0:f615d151a72c 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Michielber 0:f615d151a72c 21 THE SOFTWARE.
Michielber 0:f615d151a72c 22 */
Michielber 0:f615d151a72c 23
Michielber 0:f615d151a72c 24 #include "HTTPFile.h"
Michielber 0:f615d151a72c 25
Michielber 0:f615d151a72c 26 //#define __DEBUG
Michielber 0:f615d151a72c 27 #include "dbg/dbg.h"
Michielber 0:f615d151a72c 28
Michielber 0:f615d151a72c 29 HTTPFile::HTTPFile(const char* path) : HTTPData(), m_fp(NULL), m_path(path), m_len(0), m_chunked(false)
Michielber 0:f615d151a72c 30 {
Michielber 0:f615d151a72c 31
Michielber 0:f615d151a72c 32 }
Michielber 0:f615d151a72c 33
Michielber 0:f615d151a72c 34 HTTPFile::~HTTPFile()
Michielber 0:f615d151a72c 35 {
Michielber 0:f615d151a72c 36 closeFile();
Michielber 0:f615d151a72c 37 }
Michielber 0:f615d151a72c 38
Michielber 0:f615d151a72c 39 void HTTPFile::clear()
Michielber 0:f615d151a72c 40 {
Michielber 0:f615d151a72c 41 closeFile();
Michielber 0:f615d151a72c 42 //Force reopening
Michielber 0:f615d151a72c 43 }
Michielber 0:f615d151a72c 44
Michielber 0:f615d151a72c 45 int HTTPFile::read(char* buf, int len)
Michielber 0:f615d151a72c 46 {
Michielber 0:f615d151a72c 47 if(!openFile("r")) //File does not exist, or I/O error...
Michielber 0:f615d151a72c 48 return 0;
Michielber 0:f615d151a72c 49 len = fread(buf, 1, len, m_fp);
Michielber 0:f615d151a72c 50 if( feof(m_fp) )
Michielber 0:f615d151a72c 51 {
Michielber 0:f615d151a72c 52 //File read completely, we can close it
Michielber 0:f615d151a72c 53 closeFile();
Michielber 0:f615d151a72c 54 }
Michielber 0:f615d151a72c 55 return len;
Michielber 0:f615d151a72c 56 }
Michielber 0:f615d151a72c 57
Michielber 0:f615d151a72c 58 int HTTPFile::write(const char* buf, int len)
Michielber 0:f615d151a72c 59 {
Michielber 0:f615d151a72c 60 if(!openFile("w")) //File does not exist, or I/O error...
Michielber 0:f615d151a72c 61 return 0;
Michielber 0:f615d151a72c 62 len = fwrite(buf, 1, len, m_fp);
Michielber 0:f615d151a72c 63 DBG("Written %d bytes in %d\n", len, m_fp);
Michielber 0:f615d151a72c 64 if( (!m_chunked && (ftell(m_fp) >= m_len)) ||
Michielber 0:f615d151a72c 65 (m_chunked && !len) )
Michielber 0:f615d151a72c 66 {
Michielber 0:f615d151a72c 67 //File received completely, we can close it
Michielber 0:f615d151a72c 68 closeFile();
Michielber 0:f615d151a72c 69 }
Michielber 0:f615d151a72c 70 return len;
Michielber 0:f615d151a72c 71 }
Michielber 0:f615d151a72c 72
Michielber 0:f615d151a72c 73 string HTTPFile::getDataType() //Internet media type for Content-Type header
Michielber 0:f615d151a72c 74 {
Michielber 0:f615d151a72c 75 return ""; //Unknown
Michielber 0:f615d151a72c 76 }
Michielber 0:f615d151a72c 77
Michielber 0:f615d151a72c 78 void HTTPFile::setDataType(const string& type) //Internet media type from Content-Type header
Michielber 0:f615d151a72c 79 {
Michielber 0:f615d151a72c 80 //Do not really care here
Michielber 0:f615d151a72c 81 }
Michielber 0:f615d151a72c 82
Michielber 0:f615d151a72c 83 bool HTTPFile::getIsChunked() //For Transfer-Encoding header
Michielber 0:f615d151a72c 84 {
Michielber 0:f615d151a72c 85 return false;
Michielber 0:f615d151a72c 86 }
Michielber 0:f615d151a72c 87
Michielber 0:f615d151a72c 88 void HTTPFile::setIsChunked(bool chunked) //From Transfer-Encoding header
Michielber 0:f615d151a72c 89 {
Michielber 0:f615d151a72c 90 m_chunked = chunked;
Michielber 0:f615d151a72c 91 }
Michielber 0:f615d151a72c 92
Michielber 0:f615d151a72c 93 int HTTPFile::getDataLen() //For Content-Length header
Michielber 0:f615d151a72c 94 {
Michielber 0:f615d151a72c 95 return m_len;
Michielber 0:f615d151a72c 96 }
Michielber 0:f615d151a72c 97
Michielber 0:f615d151a72c 98 void HTTPFile::setDataLen(int len) //From Content-Length header, or if the transfer is chunked, next chunk length
Michielber 0:f615d151a72c 99 {
Michielber 0:f615d151a72c 100 if(!m_chunked)
Michielber 0:f615d151a72c 101 m_len = len; //Useful so that we can close file when last byte is written
Michielber 0:f615d151a72c 102 }
Michielber 0:f615d151a72c 103
Michielber 0:f615d151a72c 104 bool HTTPFile::openFile(const char* mode) //true on success, false otherwise
Michielber 0:f615d151a72c 105 {
Michielber 0:f615d151a72c 106 if(m_fp)
Michielber 0:f615d151a72c 107 return true;
Michielber 0:f615d151a72c 108
Michielber 0:f615d151a72c 109 m_fp = fopen(m_path.c_str(), mode);
Michielber 0:f615d151a72c 110 if(m_fp && mode[0]=='r')
Michielber 0:f615d151a72c 111 {
Michielber 0:f615d151a72c 112 //Seek EOF to get length
Michielber 0:f615d151a72c 113 fseek(m_fp, 0, SEEK_END);
Michielber 0:f615d151a72c 114 m_len = ftell(m_fp);
Michielber 0:f615d151a72c 115 fseek(m_fp, 0, SEEK_SET); //Goto SOF
Michielber 0:f615d151a72c 116 }
Michielber 0:f615d151a72c 117
Michielber 0:f615d151a72c 118 DBG("fd = %d\n", m_fp);
Michielber 0:f615d151a72c 119
Michielber 0:f615d151a72c 120 if(!m_fp)
Michielber 0:f615d151a72c 121 return false;
Michielber 0:f615d151a72c 122
Michielber 0:f615d151a72c 123 return true;
Michielber 0:f615d151a72c 124 }
Michielber 0:f615d151a72c 125
Michielber 0:f615d151a72c 126 void HTTPFile::closeFile()
Michielber 0:f615d151a72c 127 {
Michielber 0:f615d151a72c 128 if(m_fp)
Michielber 0:f615d151a72c 129 fclose(m_fp);
Michielber 0:f615d151a72c 130 }