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Dependencies:   mbed

NetServices/services/http/client/data/HTTPFile.cpp@1:f5ac63519541, 2014-03-05 (annotated)

Committer:
Michael J. Spencer
Date:
Wed Mar 05 06:14:02 2014 -0800
Revision:
1:f5ac63519541
Initial commit.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Michael J. Spencer 1:f5ac63519541 1
Michael J. Spencer 1:f5ac63519541 2 /*
Michael J. Spencer 1:f5ac63519541 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
Michael J. Spencer 1:f5ac63519541 4
Michael J. Spencer 1:f5ac63519541 5 Permission is hereby granted, free of charge, to any person obtaining a copy
Michael J. Spencer 1:f5ac63519541 6 of this software and associated documentation files (the "Software"), to deal
Michael J. Spencer 1:f5ac63519541 7 in the Software without restriction, including without limitation the rights
Michael J. Spencer 1:f5ac63519541 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Michael J. Spencer 1:f5ac63519541 9 copies of the Software, and to permit persons to whom the Software is
Michael J. Spencer 1:f5ac63519541 10 furnished to do so, subject to the following conditions:
Michael J. Spencer 1:f5ac63519541 11
Michael J. Spencer 1:f5ac63519541 12 The above copyright notice and this permission notice shall be included in
Michael J. Spencer 1:f5ac63519541 13 all copies or substantial portions of the Software.
Michael J. Spencer 1:f5ac63519541 14
Michael J. Spencer 1:f5ac63519541 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Michael J. Spencer 1:f5ac63519541 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Michael J. Spencer 1:f5ac63519541 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Michael J. Spencer 1:f5ac63519541 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Michael J. Spencer 1:f5ac63519541 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Michael J. Spencer 1:f5ac63519541 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Michael J. Spencer 1:f5ac63519541 21 THE SOFTWARE.
Michael J. Spencer 1:f5ac63519541 22 */
Michael J. Spencer 1:f5ac63519541 23
Michael J. Spencer 1:f5ac63519541 24 #include "HTTPFile.h"
Michael J. Spencer 1:f5ac63519541 25
Michael J. Spencer 1:f5ac63519541 26 //#define __DEBUG
Michael J. Spencer 1:f5ac63519541 27 #include "dbg/dbg.h"
Michael J. Spencer 1:f5ac63519541 28
Michael J. Spencer 1:f5ac63519541 29 HTTPFile::HTTPFile(const char* path) : HTTPData(), m_fp(NULL), m_path(path), m_len(0), m_chunked(false)
Michael J. Spencer 1:f5ac63519541 30 {
Michael J. Spencer 1:f5ac63519541 31
Michael J. Spencer 1:f5ac63519541 32 }
Michael J. Spencer 1:f5ac63519541 33
Michael J. Spencer 1:f5ac63519541 34 HTTPFile::~HTTPFile()
Michael J. Spencer 1:f5ac63519541 35 {
Michael J. Spencer 1:f5ac63519541 36 closeFile();
Michael J. Spencer 1:f5ac63519541 37 }
Michael J. Spencer 1:f5ac63519541 38
Michael J. Spencer 1:f5ac63519541 39 void HTTPFile::clear()
Michael J. Spencer 1:f5ac63519541 40 {
Michael J. Spencer 1:f5ac63519541 41 closeFile();
Michael J. Spencer 1:f5ac63519541 42 //Force reopening
Michael J. Spencer 1:f5ac63519541 43 }
Michael J. Spencer 1:f5ac63519541 44
Michael J. Spencer 1:f5ac63519541 45 int HTTPFile::read(char* buf, int len)
Michael J. Spencer 1:f5ac63519541 46 {
Michael J. Spencer 1:f5ac63519541 47 if(!openFile("r")) //File does not exist, or I/O error...
Michael J. Spencer 1:f5ac63519541 48 return 0;
Michael J. Spencer 1:f5ac63519541 49 len = fread(buf, 1, len, m_fp);
Michael J. Spencer 1:f5ac63519541 50 if( feof(m_fp) )
Michael J. Spencer 1:f5ac63519541 51 {
Michael J. Spencer 1:f5ac63519541 52 //File read completely, we can close it
Michael J. Spencer 1:f5ac63519541 53 closeFile();
Michael J. Spencer 1:f5ac63519541 54 }
Michael J. Spencer 1:f5ac63519541 55 return len;
Michael J. Spencer 1:f5ac63519541 56 }
Michael J. Spencer 1:f5ac63519541 57
Michael J. Spencer 1:f5ac63519541 58 int HTTPFile::write(const char* buf, int len)
Michael J. Spencer 1:f5ac63519541 59 {
Michael J. Spencer 1:f5ac63519541 60 if(!openFile("w")) //File does not exist, or I/O error...
Michael J. Spencer 1:f5ac63519541 61 return 0;
Michael J. Spencer 1:f5ac63519541 62 len = fwrite(buf, 1, len, m_fp);
Michael J. Spencer 1:f5ac63519541 63 DBG("Written %d bytes in %d\n", len, m_fp);
Michael J. Spencer 1:f5ac63519541 64 if( (!m_chunked && (ftell(m_fp) >= m_len)) ||
Michael J. Spencer 1:f5ac63519541 65 (m_chunked && !len) )
Michael J. Spencer 1:f5ac63519541 66 {
Michael J. Spencer 1:f5ac63519541 67 //File received completely, we can close it
Michael J. Spencer 1:f5ac63519541 68 closeFile();
Michael J. Spencer 1:f5ac63519541 69 }
Michael J. Spencer 1:f5ac63519541 70 return len;
Michael J. Spencer 1:f5ac63519541 71 }
Michael J. Spencer 1:f5ac63519541 72
Michael J. Spencer 1:f5ac63519541 73 string HTTPFile::getDataType() //Internet media type for Content-Type header
Michael J. Spencer 1:f5ac63519541 74 {
Michael J. Spencer 1:f5ac63519541 75 return ""; //Unknown
Michael J. Spencer 1:f5ac63519541 76 }
Michael J. Spencer 1:f5ac63519541 77
Michael J. Spencer 1:f5ac63519541 78 void HTTPFile::setDataType(const string& type) //Internet media type from Content-Type header
Michael J. Spencer 1:f5ac63519541 79 {
Michael J. Spencer 1:f5ac63519541 80 //Do not really care here
Michael J. Spencer 1:f5ac63519541 81 }
Michael J. Spencer 1:f5ac63519541 82
Michael J. Spencer 1:f5ac63519541 83 bool HTTPFile::getIsChunked() //For Transfer-Encoding header
Michael J. Spencer 1:f5ac63519541 84 {
Michael J. Spencer 1:f5ac63519541 85 return false;
Michael J. Spencer 1:f5ac63519541 86 }
Michael J. Spencer 1:f5ac63519541 87
Michael J. Spencer 1:f5ac63519541 88 void HTTPFile::setIsChunked(bool chunked) //From Transfer-Encoding header
Michael J. Spencer 1:f5ac63519541 89 {
Michael J. Spencer 1:f5ac63519541 90 m_chunked = chunked;
Michael J. Spencer 1:f5ac63519541 91 }
Michael J. Spencer 1:f5ac63519541 92
Michael J. Spencer 1:f5ac63519541 93 int HTTPFile::getDataLen() //For Content-Length header
Michael J. Spencer 1:f5ac63519541 94 {
Michael J. Spencer 1:f5ac63519541 95 return m_len;
Michael J. Spencer 1:f5ac63519541 96 }
Michael J. Spencer 1:f5ac63519541 97
Michael J. Spencer 1:f5ac63519541 98 void HTTPFile::setDataLen(int len) //From Content-Length header, or if the transfer is chunked, next chunk length
Michael J. Spencer 1:f5ac63519541 99 {
Michael J. Spencer 1:f5ac63519541 100 if(!m_chunked)
Michael J. Spencer 1:f5ac63519541 101 m_len = len; //Useful so that we can close file when last byte is written
Michael J. Spencer 1:f5ac63519541 102 }
Michael J. Spencer 1:f5ac63519541 103
Michael J. Spencer 1:f5ac63519541 104 bool HTTPFile::openFile(const char* mode) //true on success, false otherwise
Michael J. Spencer 1:f5ac63519541 105 {
Michael J. Spencer 1:f5ac63519541 106 if(m_fp)
Michael J. Spencer 1:f5ac63519541 107 return true;
Michael J. Spencer 1:f5ac63519541 108
Michael J. Spencer 1:f5ac63519541 109 m_fp = fopen(m_path.c_str(), mode);
Michael J. Spencer 1:f5ac63519541 110 if(m_fp && mode[0]=='r')
Michael J. Spencer 1:f5ac63519541 111 {
Michael J. Spencer 1:f5ac63519541 112 //Seek EOF to get length
Michael J. Spencer 1:f5ac63519541 113 fseek(m_fp, 0, SEEK_END);
Michael J. Spencer 1:f5ac63519541 114 m_len = ftell(m_fp);
Michael J. Spencer 1:f5ac63519541 115 fseek(m_fp, 0, SEEK_SET); //Goto SOF
Michael J. Spencer 1:f5ac63519541 116 }
Michael J. Spencer 1:f5ac63519541 117
Michael J. Spencer 1:f5ac63519541 118 DBG("fd = %d\n", m_fp);
Michael J. Spencer 1:f5ac63519541 119
Michael J. Spencer 1:f5ac63519541 120 if(!m_fp)
Michael J. Spencer 1:f5ac63519541 121 return false;
Michael J. Spencer 1:f5ac63519541 122
Michael J. Spencer 1:f5ac63519541 123 return true;
Michael J. Spencer 1:f5ac63519541 124 }
Michael J. Spencer 1:f5ac63519541 125
Michael J. Spencer 1:f5ac63519541 126 void HTTPFile::closeFile()
Michael J. Spencer 1:f5ac63519541 127 {
Michael J. Spencer 1:f5ac63519541 128 if(m_fp)
Michael J. Spencer 1:f5ac63519541 129 fclose(m_fp);
Michael J. Spencer 1:f5ac63519541 130 }