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/*************************************************************************/
/* */
/* Centre for Speech Technology Research */
/* University of Edinburgh, UK */
/* Copyright (c) 1996,1997 */
/* All Rights Reserved. */
/* */
/* Permission is hereby granted, free of charge, to use and distribute */
/* this software and its documentation without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of this work, and to */
/* permit persons to whom this work is furnished to do so, subject to */
/* the following conditions: */
/* 1. The code must retain the above copyright notice, this list of */
/* conditions and the following disclaimer. */
/* 2. Any modifications must be clearly marked as such. */
/* 3. Original authors' names are not deleted. */
/* 4. The authors' names are not used to endorse or promote products */
/* derived from this software without specific prior written */
/* permission. */
/* */
/* THE UNIVERSITY OF EDINBURGH AND THE CONTRIBUTORS TO THIS WORK */
/* DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING */
/* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT */
/* SHALL THE UNIVERSITY OF EDINBURGH NOR THE CONTRIBUTORS BE LIABLE */
/* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN */
/* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, */
/* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF */
/* THIS SOFTWARE. */
/* */
/*************************************************************************/
/* Authors: Alan W Black */
/* Date : November 1996 */
/*-----------------------------------------------------------------------*/
/* Some basic functions for dealing with the web and urls */
/* */
/*=======================================================================*/
#include <cstdio>
#include "EST_unix.h"
#include <cstdlib>
#include "festival.h"
#include "festivalP.h"
#include "EST_String.h"
#if 0
static int getc_unbuffered(int fd,int *c);
#endif
LISP parse_url(EST_String url)
{
EST_String protocol, host, port, path;
if (!parse_url(url, protocol, host, port, path))
err("can't parse URL", url);
return cons(strintern(protocol),
cons(strintern(host),
cons(strintern(port),
cons(strintern(path), NIL))));
}
LISP lisp_parse_url(LISP l_url)
{
EST_String url(get_c_string(l_url));
return parse_url(url);
}
#if 0
LISP lisp_get_url(LISP url,LISP filename)
{
// Copy file identified by URL and copy it to filename
// Current only file:/.../... and http:/.../... are supported
EST_TokenStream us;
EST_String host,file,port;
char *comm = walloc(char,32+strlen(get_c_string(url)));
char *getstr = walloc(char,32+strlen(get_c_string(filename)));
int wwwserver=-1,c;
FILE *fd, *fin, *fout;
// first parse the url
us.open_string(get_c_string(url));
us.set_WhiteSpaceChars("");
us.set_SingleCharSymbols(":/");
if (us.peek() == "http")
{
us.get();
if ((us.get() != ":") ||
(us.get() != "/") ||
(us.get() != "/"))
{
cerr << "url_get: malformed url" << endl;
festival_error();
}
host = us.get().string(); // upto next /
if (us.peek() == ":") // a port is specified
{
us.get();
port = us.get().string();
}
else
port = "80"; // standard port for http servers
file = us.get_upto_eoln();
sprintf(comm,"telnet %s %s",(const char *)host,(const char *)port);
wwwserver = festival_socket_client(host,atoi(port));
if (wwwserver < 0)
{
cerr << "get_url: can't access server\n";
festival_error();
}
fout = fdopen(wwwserver,"wb");
fprintf(fout,"GET %s\n",(const char *)file);
fflush(fout);
if ((fd=fopen(get_c_string(filename),"wb")) == NULL)
{
cerr << "get_url: can't open outputfile \"" <<
get_c_string(filename) << "\"\n";
festival_error();
}
else
{
while (getc_unbuffered(wwwserver,&c) != EOF)
putc(c,fd);
fclose(fd);
}
close(wwwserver);
wfree(comm);
wfree(getstr);
}
else if (us.peek() == "file")
{
us.get();
if (us.get() != ":")
{
cerr << "url_get: malformed url" << endl;
festival_error();
}
file = us.get_upto_eoln();
if ((fin = fopen(file,"rb")) == NULL)
{
cerr << "get_url: unable to access file url \"" <<
get_c_string(url) << "\"\n";
festival_error();
}
if ((fd=fopen(get_c_string(filename),"wb")) == NULL)
{
cerr << "get_url: can't open outputfile \"" <<
get_c_string(filename) << "\"\n";
fclose(fin);
festival_error();
}
else
{
while ((c=getc(fin)) != EOF)
putc(c,fd);
fclose(fd);
fclose(fin);
}
}
else
{
cerr << "get_url: unrecognizable url \"" <<
get_c_string(url) << "\"\n";
festival_error();
}
return NIL;
}
LISP l_open_socket(LISP host, LISP port, LISP how)
{
// Open socket to remote server
int fd;
char *how_c;
fd = festival_socket_client(get_c_string(host),get_c_int(port));
if (streq(get_c_string(how),"rw"))
{ // return list of r and w FILEDESCRIPTORS
return cons(siod_fdopen_c(fd,
EST_String(get_c_string(host))+
":"+get_c_string(port),
"rb"),
cons(siod_fdopen_c(fd,
EST_String(get_c_string(host))+
":"+get_c_string(port),
"wb"),NIL));
}
else
{
if (how == NIL)
how_c = "wb";
else
how_c = get_c_string(how);
return siod_fdopen_c(fd,
EST_String(get_c_string(host))+":"+get_c_string(port),
how_c);
}
}
static int getc_unbuffered(int fd,int *rc)
{
// An attempted to get rid of the buffering
char c;
int n;
n = read(fd,&c,1);
*rc = c;
if (n == 0)
return EOF;
else
return 0;
}
#endif
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