Satoshi Togawa / Mbed 2 deprecated mpod_nhk_english_spxml

Download NHK English news podcast automatically. XML Parser "spxml" is used. This application requires mpod mother board. See also http://mbed.org/users/geodenx/notebook/mpod/

Dependencies:   BlinkLed HTTPClient EthernetInterface FatFileSystemCpp MSCFileSystem spxml mbed-rtos mbed

Fork of mpod_nhk_english by Satoshi Togawa

Download NHK English news podcast automatically.
XML Parser "spxml" is used.
This application requires mpod mother board.
See also http://mbed.org/users/geodenx/notebook/mpod/

HTTPFile.cpp@0:1855a008f28e, 2012-08-16 (annotated)

Committer:
togayan
Date:
Thu Aug 16 15:49:19 2012 +0000
Revision:
0:1855a008f28e
Child:
7:ad9fcf0e1bc5
First revision of mpod_nhk_english.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
togayan 0:1855a008f28e 1 /* HTTPFile.cpp */
togayan 0:1855a008f28e 2 #include "HTTPFile.h"
togayan 0:1855a008f28e 3
togayan 0:1855a008f28e 4 #include <cstring>
togayan 0:1855a008f28e 5
togayan 0:1855a008f28e 6 #define OK 0
togayan 0:1855a008f28e 7 #define NG -1
togayan 0:1855a008f28e 8
togayan 0:1855a008f28e 9 using std::memcpy;
togayan 0:1855a008f28e 10 using std::strncpy;
togayan 0:1855a008f28e 11 using std::strlen;
togayan 0:1855a008f28e 12
togayan 0:1855a008f28e 13 HTTPFile::HTTPFile(const char* path) :
togayan 0:1855a008f28e 14 m_fp(NULL),
togayan 0:1855a008f28e 15 m_path(path),
togayan 0:1855a008f28e 16 m_len(0),
togayan 0:1855a008f28e 17 m_chunked(false)
togayan 0:1855a008f28e 18 {
togayan 0:1855a008f28e 19 }
togayan 0:1855a008f28e 20
togayan 0:1855a008f28e 21 HTTPFile::~HTTPFile()
togayan 0:1855a008f28e 22 {
togayan 0:1855a008f28e 23 closeFile();
togayan 0:1855a008f28e 24 }
togayan 0:1855a008f28e 25
togayan 0:1855a008f28e 26 void HTTPFile::clear()
togayan 0:1855a008f28e 27 {
togayan 0:1855a008f28e 28 closeFile();
togayan 0:1855a008f28e 29 //Force reopening
togayan 0:1855a008f28e 30 }
togayan 0:1855a008f28e 31
togayan 0:1855a008f28e 32 /*virtual*/ int HTTPFile::read(char* buf, size_t len, size_t* pReadLen)
togayan 0:1855a008f28e 33 {
togayan 0:1855a008f28e 34 if(!openFile("r")) //File does not exist, or I/O error...
togayan 0:1855a008f28e 35 return NG;
togayan 0:1855a008f28e 36
togayan 0:1855a008f28e 37 *pReadLen = fread(buf, 1, len, m_fp);
togayan 0:1855a008f28e 38 if( feof(m_fp) )
togayan 0:1855a008f28e 39 {
togayan 0:1855a008f28e 40 //File read completely, we can close it
togayan 0:1855a008f28e 41 closeFile();
togayan 0:1855a008f28e 42 }
togayan 0:1855a008f28e 43 return OK;
togayan 0:1855a008f28e 44 }
togayan 0:1855a008f28e 45
togayan 0:1855a008f28e 46 /*virtual*/ int HTTPFile::write(const char* buf, size_t len)
togayan 0:1855a008f28e 47 {
togayan 0:1855a008f28e 48 if(!openFile("w")) //File does not exist, or I/O error...
togayan 0:1855a008f28e 49 return NG;
togayan 0:1855a008f28e 50
togayan 0:1855a008f28e 51 len = fwrite(buf, 1, len, m_fp);
togayan 0:1855a008f28e 52 //DBG("Written %d bytes in %d\n", len, m_fp);
togayan 0:1855a008f28e 53 if( (!m_chunked && (ftell(m_fp) >= m_len)) || (m_chunked && !len) )
togayan 0:1855a008f28e 54 {
togayan 0:1855a008f28e 55 //File received completely, we can close it
togayan 0:1855a008f28e 56 closeFile();
togayan 0:1855a008f28e 57 }
togayan 0:1855a008f28e 58 return len;
togayan 0:1855a008f28e 59 }
togayan 0:1855a008f28e 60
togayan 0:1855a008f28e 61 /*virtual*/ int HTTPFile::getDataType(char* type, size_t maxTypeLen) //Internet media type for Content-Type header
togayan 0:1855a008f28e 62 {
togayan 0:1855a008f28e 63 strncpy(type, "text/plain", maxTypeLen-1);
togayan 0:1855a008f28e 64 type[maxTypeLen-1] = '\0';
togayan 0:1855a008f28e 65 return OK;
togayan 0:1855a008f28e 66 }
togayan 0:1855a008f28e 67
togayan 0:1855a008f28e 68 /*virtual*/ void HTTPFile::setDataType(const char* type) //Internet media type from Content-Type header
togayan 0:1855a008f28e 69 {
togayan 0:1855a008f28e 70 //Do not really care here
togayan 0:1855a008f28e 71 }
togayan 0:1855a008f28e 72
togayan 0:1855a008f28e 73 /*virtual*/ bool HTTPFile::getIsChunked() //For Transfer-Encoding header
togayan 0:1855a008f28e 74 {
togayan 0:1855a008f28e 75 return false;
togayan 0:1855a008f28e 76 }
togayan 0:1855a008f28e 77
togayan 0:1855a008f28e 78 /*virtual*/ void HTTPFile::setIsChunked(bool chunked) //For Transfer-Encoding header
togayan 0:1855a008f28e 79 {
togayan 0:1855a008f28e 80 m_chunked = chunked;
togayan 0:1855a008f28e 81 }
togayan 0:1855a008f28e 82
togayan 0:1855a008f28e 83 /*virtual*/ size_t HTTPFile::getDataLen() //For Content-Length header
togayan 0:1855a008f28e 84 {
togayan 0:1855a008f28e 85 return m_len;
togayan 0:1855a008f28e 86 }
togayan 0:1855a008f28e 87
togayan 0:1855a008f28e 88 /*virtual*/ void HTTPFile::setDataLen(size_t len) //For Content-Length header, or if the transfer is chunked, next chunk length
togayan 0:1855a008f28e 89 {
togayan 0:1855a008f28e 90 if(!m_chunked)
togayan 0:1855a008f28e 91 m_len = len; //Useful so that we can close file when last byte is written
togayan 0:1855a008f28e 92 }
togayan 0:1855a008f28e 93
togayan 0:1855a008f28e 94 bool HTTPFile::openFile(const char* mode) //true on success, false otherwise
togayan 0:1855a008f28e 95 {
togayan 0:1855a008f28e 96 if(m_fp)
togayan 0:1855a008f28e 97 return true;
togayan 0:1855a008f28e 98
togayan 0:1855a008f28e 99 m_fp = fopen(m_path.c_str(), mode);
togayan 0:1855a008f28e 100 if(m_fp && mode[0]=='r')
togayan 0:1855a008f28e 101 {
togayan 0:1855a008f28e 102 //Seek EOF to get length
togayan 0:1855a008f28e 103 fseek(m_fp, 0, SEEK_END);
togayan 0:1855a008f28e 104 m_len = ftell(m_fp);
togayan 0:1855a008f28e 105 fseek(m_fp, 0, SEEK_SET); //Goto SOF
togayan 0:1855a008f28e 106 }
togayan 0:1855a008f28e 107
togayan 0:1855a008f28e 108 //DBG("fd = %d\n", m_fp);
togayan 0:1855a008f28e 109
togayan 0:1855a008f28e 110 if(!m_fp)
togayan 0:1855a008f28e 111 return false;
togayan 0:1855a008f28e 112
togayan 0:1855a008f28e 113 return true;
togayan 0:1855a008f28e 114 }
togayan 0:1855a008f28e 115
togayan 0:1855a008f28e 116 void HTTPFile::closeFile()
togayan 0:1855a008f28e 117 {
togayan 0:1855a008f28e 118 if(m_fp)
togayan 0:1855a008f28e 119 fclose(m_fp);
togayan 0:1855a008f28e 120 }