/* A little utility to fetch a web page and send the raw data
* to the provided FILE pointer. This ptr could be "stdout" to
* display on the console.
*
* Example:
* TA_WebFetch( "www.yahoo.com", stdout );
* or
* TA_WebFetch( "http://www.yahoo.com/mt", myFile );
*/
TA_RetCode TA_WebFetch( TA_Libc *libHandle, const char *url, FILE *out )
{
TA_RetCode retCode;
TA_WebPage *webPage;
const char *stringStart;
const char *webSitePage;
char *allocString;
unsigned int webSiteLength;
if( !url )
return TA_BAD_PARAM;
allocString = NULL;
/* Skip the http:// if specified. */
stringStart = url;
if( strncmp( url, "http://", 7 ) == 0 )
stringStart += 7;
/* Find if there is a specifc web page specified. */
webSitePage = strchr( stringStart, '/' );
if( webSitePage )
{
webSitePage++;
if( *webSitePage == '\0' )
{
webSitePage = NULL;
}
else
{
webSiteLength = webSitePage - stringStart - 1;
allocString = (char *)TA_Malloc( libHandle, webSiteLength+1 );
if( !allocString )
return TA_ALLOC_ERR;
strncpy( allocString, stringStart, webSiteLength );
allocString[webSiteLength] = '\0';
stringStart = allocString;
}
}
retCode = TA_WebPageAlloc( libHandle,
stringStart,
webSitePage,
NULL, NULL,
&webPage,
2 );
if( allocString )
TA_Free( libHandle, allocString );
if( retCode == TA_SUCCESS )
{
retCode = TA_StreamToFile( webPage->content, out );
TA_WebPageFree( webPage );
}
return retCode;
}
TA_RetCode TA_WebPageAllocFromYahooName( TA_Libc *libHandle,
const TA_DecodingParam *decodingParam,
const char *yahooName,
TA_WebPage **allocatedWebPage )
{
TA_PROLOG;
TA_RetCode retCode;
char webSitePage[300];
unsigned int prefixLength, suffixLength, symbolLength, i;
const char *webSiteAddr;
const char *uirPrefix, *uirSuffix;
TA_WebPage *webPage;
TA_TRACE_BEGIN( libHandle, TA_WebPageAllocFromYahooName );
retCode = TA_INTERNAL_ERROR(117);
if( !decodingParam || !yahooName || !allocatedWebPage )
{
TA_TRACE_RETURN( TA_BAD_PARAM );
}
webSiteAddr = decodingParam->webSiteServer;
TA_ASSERT( libHandle, webSiteAddr != NULL );
uirPrefix = decodingParam->uirPrefix;
TA_ASSERT( libHandle, uirPrefix != NULL );
prefixLength = strlen( uirPrefix );
uirSuffix = decodingParam->uirSuffix;
TA_ASSERT( libHandle, uirSuffix != NULL );
suffixLength = strlen( uirSuffix );
symbolLength = strlen( yahooName );
if( (symbolLength + suffixLength + prefixLength) >= 299 )
{
TA_TRACE_RETURN( TA_INVALID_SECURITY_EXCHANGE );
}
sprintf( webSitePage, "%s%s%s", uirPrefix, yahooName, uirSuffix );
/* Get the Web Page */
for( i=0; i < 10; i++ )
{
retCode = TA_WebPageAlloc( libHandle,
webSiteAddr,
webSitePage,
NULL, NULL, &webPage, 10 );
if( retCode == TA_SUCCESS )
break;
else
{
/* Yahoo! is may be slow, let's sleep 1 minute */
TA_Sleep( 60 );
}
}
if( retCode != TA_SUCCESS )
{
TA_TRACE_RETURN( retCode );
}
*allocatedWebPage = webPage;
TA_TRACE_RETURN( TA_SUCCESS );
}
