/* Save and Call Back
** ------------------
** This stream works exactly like the HTSaveAndExecute
** stream but in addition when EOF has been reached, it checks whether a
** callback function has been associated with the request object in which
** case, this callback is being called. This can be use by the
** application to do some processing after the system command
** has terminated. The callback function is called with the file name of
** the temporary file as parameter.
*/
PUBLIC HTStream* HTSaveAndCallback (HTRequest * request,
void * param,
HTFormat input_format,
HTFormat output_format,
HTStream * output_stream)
{
HTStream * me = HTSaveAndExecute(request, param, input_format,
output_format, output_stream);
if (me) {
me->callback = HTRequest_callback(request);
return me;
}
return HTErrorStream();
}
/* Create a filter stack
** ---------------------
**
** If a wildcard match is made, a temporary HTPresentation
** structure is made to hold the destination format while the
** new stack is generated. This is just to pass the out format to
** MIME so far. Storing the format of a stream in the stream might
** be a lot neater.
*/
PUBLIC HTStream * HTStreamStack ARGS5(
HTFormat, format_in,
HTFormat, rep_out,
int, compressed,
HTStream*, sink,
HTParentAnchor*, anchor)
{
HTAtom * wildcard = HTAtom_for("*");
HTPresentation temp;
/* Inherit force_dump_to_file from mo-www.c. */
extern int force_dump_to_file;
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf(stderr,
"[HTStreamStack] Constructing stream stack for %s to %s\n",
HTAtom_name(format_in),
HTAtom_name(rep_out));
#endif
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
" Compressed is %d\n", compressed);
#endif
if (rep_out == WWW_SOURCE ||
rep_out == format_in)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[HTStreamStack] rep_out == WWW_SOURCE | rep_out == format_in; returning sink\n");
#endif
return sink;
}
if (!HTPresentations)
HTFormatInit(); /* set up the list */
if (force_dump_to_file && format_in != WWW_MIME)
{
return HTSaveAndExecute (NULL, anchor, sink, format_in, compressed);
}
{
int n = HTList_count(HTPresentations);
int i;
HTPresentation * pres;
for(i=0; i<n; i++)
{
pres = HTList_objectAt(HTPresentations, i);
#ifndef DISABLE_TRACE
if (www2Trace)
{
fprintf (stderr, "HTFormat: looking at pres '%s'\n",
HTAtom_name (pres->rep));
if (pres->command)
fprintf (stderr, "HTFormat: pres->command is '%s'\n",
pres->command);
else
fprintf (stderr, "HTFormat: pres->command doesn't exist\n");
}
#endif
if (pres->rep == format_in ||
partial_wildcard_matches (pres->rep, format_in))
{
if (pres->command && strstr (pres->command, "mosaic-internal-present"))
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr, "[HTStreamStack] HEY HEY HEY caught internal-present\n");
#endif
return HTPlainPresent (pres, anchor, sink, format_in, compressed);
}
if (pres->rep_out == rep_out)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[HTStreamStack] pres->rep_out == rep_out\n");
#endif
return (*pres->converter)(pres, anchor, sink, format_in, compressed);
}
if (pres->rep_out == wildcard)
{
#ifndef DISABLE_TRACE
if (www2Trace)
fprintf (stderr,
"[HTStreamStack] pres->rep_out == wildcard\n");
#endif
temp = *pres;/* make temp conversion to needed fmt */
temp.rep_out = rep_out; /* yuk */
return (*pres->converter)(&temp, anchor, sink, format_in, compressed);
}
}
}
}
#ifndef DISABLE_TRACE
if (www2Trace)
{
fprintf (stderr, "[HTStreamStack] Returning NULL at bottom.\n");
}
#endif
return NULL;
}
