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|
/*
/--------------------------------------------------------------------
|
| $Id: plurlsrc.cpp,v 1.6 2004/09/11 12:41:35 uzadow Exp $
| URL Data Source Class
|
| This is a class which takes a URL as a source of
| picture data.
|
| Copyright (c) 1996-2002 Ulrich von Zadow
|
\--------------------------------------------------------------------
*/
#include "plurlsrc.h"
#include "plexcept.h"
#include <stdlib.h>
using namespace std;
PLCurlInitializer PLURLSource::s_CurlInitializer;
PLURLSource::PLURLSource()
: PLDataSource (NULL) // Progress notification not implemented.
{
m_RawData.reserve(32786); // Save a few reallocations.
}
PLURLSource::~PLURLSource
()
{
}
size_t PLURLSource::WriteCurlData(void *ptr, size_t size, size_t nmemb, void *stream)
{
PLURLSource * This = (PLURLSource *)stream;
This->m_RawData.append ((char*)ptr, size*nmemb);
return size*nmemb;
}
int PLURLSource::Open (const char *pURL)
{
// Easy implementation: get everything on open.
CURL * CurlHandle = s_CurlInitializer.getHandle();
curl_easy_setopt(CurlHandle, CURLOPT_URL, pURL);
curl_easy_setopt(CurlHandle, CURLOPT_NOPROGRESS, 1);
curl_easy_setopt(CurlHandle, CURLOPT_WRITEFUNCTION, WriteCurlData);
curl_easy_setopt(CurlHandle, CURLOPT_FILE, (void*)this); // New curl version wants CURLOPT_WRITEDATA here.
char szErrBuf[CURL_ERROR_SIZE];
curl_easy_setopt(CurlHandle, CURLOPT_ERRORBUFFER, szErrBuf);
CURLcode res = curl_easy_perform(CurlHandle);
if (res != CURLE_OK) {
m_ErrCode = res;
m_sErrStr = szErrBuf;
return PL_ERRURL_SOURCE;
} else {
long HTTPCode;
CURLcode res = curl_easy_getinfo(CurlHandle, CURLINFO_HTTP_CODE, &HTTPCode);
if (HTTPCode > 399) {
m_ErrCode = HTTPCode;
m_sErrStr = httpErr2Str(HTTPCode);
return PL_ERRURL_SOURCE;
}
m_CurPos = 0;
PLDataSource::Open(pURL, m_RawData.length());
return 0;
}
}
void PLURLSource::Close
()
{
m_RawData = "";
PLDataSource::Close();
}
PLBYTE * PLURLSource::ReadNBytes
( int n
)
{
PLDataSource::ReadNBytes(n);
m_CurPos += n;
return (PLBYTE*)m_RawData.data()+m_CurPos-n;
}
PLBYTE * PLURLSource::ReadEverything
()
{
return (PLBYTE*)(m_RawData.data()+m_CurPos);
}
void PLURLSource::Seek
( int n
)
{
m_CurPos = n;
}
// Read but don't advance file pointer.
PLBYTE * PLURLSource::GetBufferPtr
( int MinBytesInBuffer
)
{
return (PLBYTE*)(m_RawData.data()+m_CurPos);
}
const char * PLURLSource::GetCurlErrStr()
{
return m_sErrStr.c_str();
}
int PLURLSource::GetCurlErrCode()
{
return m_ErrCode;
}
const string PLURLSource::httpErr2Str(int HTTPCode)
{
switch (HTTPCode) {
case 400: return "Bad Request";
case 401: return "Unauthorized";
case 402: return "Payment Required";
case 403: return "Forbidden";
case 404: return "Not Found";
case 405: return "Method Not Allowed";
case 406: return "Not Acceptable";
case 407: return "Proxy Authentication Required";
case 408: return "Request Time-out";
case 409: return "Conflict";
case 410: return "Gone";
case 411: return "Length Required";
case 412: return "Precondition Failed";
case 413: return "Request Entity Too Large";
case 414: return "Request-URI Too Large";
case 415: return "Unsupported Media Type";
case 416: return "Requested range not satisfiable";
case 417: return "Expectation Failed";
case 500: return "Internal Server Error";
case 501: return "Not Implemented";
case 502: return "Bad Gateway";
case 503: return "Service Unavailable";
case 504: return "Gateway Time-out";
case 505: return "HTTP Version not supported";
default: {
char sz[10];
#ifdef WIN32
_itoa(HTTPCode, sz, 10);
#else
sprintf (sz, "%d", HTTPCode);
#endif
return string("Unknown error")+sz;
}
}
}
PLCurlInitializer::PLCurlInitializer ()
{
curl_global_init(CURL_GLOBAL_ALL);
m_CurlHandle = curl_easy_init();
}
PLCurlInitializer::~PLCurlInitializer ()
{
finalize();
}
CURL * PLCurlInitializer::getHandle()
{
return m_CurlHandle;
}
void PLCurlInitializer::finalize()
{
curl_easy_cleanup(m_CurlHandle);
curl_global_cleanup();
}
/*
/--------------------------------------------------------------------
|
| $Log: plurlsrc.cpp,v $
| Revision 1.6 2004/09/11 12:41:35 uzadow
| removed plstdpch.h
|
| Revision 1.5 2004/08/20 14:39:38 uzadow
| Added rle format to sgi decoder. Doesn't work yet, though.
|
| Revision 1.4 2004/04/18 12:34:45 uzadow
| Changes for new libcurl version.
|
| Revision 1.3 2003/04/14 10:48:19 uzadow
| Added connection reuse capability to PLURLSource.
|
| Revision 1.2 2003/02/24 16:19:49 uzadow
| Added url source (linux only), improved configure support for libungif detection.
|
| Revision 1.1 2003/02/15 21:26:58 uzadow
| Added win32 version of url data source.
|
|
\--------------------------------------------------------------------
*/
|
