/* Parse a file given format and file pointer
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** The file number given is assumed to be a TELNET stream ie containing
** CRLF at the end of lines which need to be stripped to LF for unix
** when the format is textual.
**
*/
PUBLIC int HTParseFile ARGS6(
HTFormat, format_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
FILE *, fp,
HTStream*, sink,
int, compressed)
{
HTStream * stream;
HTStreamClass targetClass;
stream = HTStreamStack(format_in,
format_out,
compressed,
sink , anchor);
if (!stream) {
char buffer[1024]; /* @@@@@@@@ */
sprintf(buffer, "Sorry, can't convert from %s to %s.",
HTAtom_name(format_in), HTAtom_name(format_out));
#ifndef DISABLE_TRACE
if (www2Trace) fprintf(stderr, "HTFormat(in HTParseFile): %s\n", buffer);
#endif
return HTLoadError(sink, 501, buffer);
}
targetClass = *(stream->isa); /* Copy pointers to procedures */
HTFileCopy(fp, stream);
(*targetClass.end_document)(stream);
(*targetClass.free)(stream);
return HT_LOADED;
}
/* Parse a file given format and file pointer
**
** This routine is responsible for creating and PRESENTING any
** graphic (or other) objects described by the file.
**
** The file number given is assumed to be a TELNET stream ie containing
** CRLF at the end of lines which need to be stripped to \n for unix
** when the format is textual.
**
** State of file and target stream on entry:
** FILE* (fp) assumed open,
** target (sink) usually NULL (will call stream stack).
**
** Return values:
** -501 Stream stack failed (cannot present or convert).
** -1 Download cancelled.
** HT_NO_DATA Error before any data read.
** HT_PARTIAL_CONTENT Interruption or error after some data read.
** HT_LOADED Normal end of file indication on reading.
**
** State of file and target stream on return:
** always fp still open; target freed, aborted, or NULL.
*/
PUBLIC int HTParseFile ARGS5(
HTFormat, rep_in,
HTFormat, format_out,
HTParentAnchor *, anchor,
FILE *, fp,
HTStream*, sink)
{
HTStream * stream;
HTStreamClass targetClass;
int rv;
#ifdef SH_EX /* 1998/01/04 (Sun) 16:04:09 */
if (fp == NULL)
return HT_LOADED;
#endif
stream = HTStreamStack(rep_in, format_out, sink, anchor);
if (!stream) {
char *buffer = 0;
if (LYCancelDownload) {
LYCancelDownload = FALSE;
return -1;
}
HTSprintf0(&buffer, CANNOT_CONVERT_I_TO_O,
HTAtom_name(rep_in), HTAtom_name(format_out));
CTRACE((tfp, "HTFormat(in HTParseFile): %s\n", buffer));
rv = HTLoadError(sink, 501, buffer);
FREE(buffer);
return rv;
}
/* Push the data down the stream
**
** @@ Bug: This decision ought to be made based on "encoding"
** rather than on content-type. @@@ When we handle encoding.
** The current method smells anyway.
*/
targetClass = *(stream->isa); /* Copy pointers to procedures */
rv = HTFileCopy(fp, stream);
if (rv == -1 || rv == HT_INTERRUPTED) {
(*targetClass._abort)(stream, NULL);
} else {
(*targetClass._free)(stream);
}
if (rv == -1)
return HT_NO_DATA;
else if (rv == HT_INTERRUPTED || (rv > 0 && rv != HT_LOADED))
return HT_PARTIAL_CONTENT;
else
return HT_LOADED;
}
