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/*
(c) Copyright 2008 Denis Oliver Kropp
All rights reserved.
This file is subject to the terms and conditions of the MIT License:
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software,
and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <config.h>
#include <string.h>
#include <unistd.h>
#include <direct/debug.h>
#include <direct/direct.h>
#include <direct/messages.h>
#include <direct/stream.h>
#include <direct/util.h>
D_DEBUG_DOMAIN( Direct_Cat, "Direct/Cat", "libdirect cat" );
static int
show_usage( const char *prg )
{
fprintf( stderr, "Usage: %s <url>\n", prg );
return -1;
}
int
main( int argc, char *argv[] )
{
DirectResult ret;
int i, fdo;
DirectStream *stream;
const char *url = NULL;
/* Parse arguments. */
for (i=1; i<argc; i++) {
if (!strcmp( argv[i], "-h" ))
return show_usage( argv[0] );
else if (!url)
url = argv[i];
else
return show_usage( argv[0] );
}
/* Check if we got an URL. */
if (!url)
return show_usage( argv[0] );
/* Initialize libdirect. */
direct_initialize();
D_INFO( "Direct/Cat: Start from '%s'...\n", url );
/* Open input. */
ret = direct_stream_create( url, &stream );
if (ret) {
D_DERROR( ret, "Direct/Cat: Opening '%s' failed!\n", url );
goto out;
}
/* Open output. */
fdo = dup( fileno(stdout) );
if (fdo < 0) {
ret = errno2result( errno );
D_PERROR( "Direct/Cat: Duplicating stdout (%d) failed!\n", fileno(stdout) );
goto close_in;
}
/* Copy loop. */
while (true) {
char buf[16384];
unsigned int length;
/* Wait for full buffer, if supported, otherwise waits for any data. */
ret = direct_stream_wait( stream, sizeof(buf), NULL );
if (ret) {
D_DERROR( ret, "Direct/Cat: Waiting for data from '%s' failed!\n", url );
goto close_both;
}
/* Read buffer. */
ret = direct_stream_read( stream, sizeof(buf), buf, &length );
if (ret) {
D_DERROR( ret, "Direct/Cat: Reading from '%s' failed!\n", url );
goto close_both;
}
D_DEBUG_AT( Direct_Cat, "Read %5u bytes\n", length );
/* Write buffer. */
length = write( fdo, buf, length );
if (length < 0) {
ret = errno2result( errno );
D_PERROR( "Direct/Cat: Writing to stdout (%d) failed!\n", fileno(stdout) );
goto close_both;
}
D_DEBUG_AT( Direct_Cat, "Wrote %5u bytes\n", length );
}
close_both:
/* Close output. */
close( fdo );
close_in:
/* Close input. */
direct_stream_destroy( stream );
out:
/* Shutdown libdirect. */
direct_shutdown();
return ret;
}
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