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/* FILE WRITER HTWrite.c
** ===========
**
*/
#include "HTWriter.h"
#define BUFFER_SIZE 4096 /* Tradeoff */
#include "HTUtils.h"
#include "tcp.h"
/* HTML Object
** -----------
*/
struct _HTStream {
CONST HTStreamClass * isa;
int soc;
char *write_pointer;
char buffer[BUFFER_SIZE];
BOOL leave_open;
#ifdef NOT_ASCII
BOOL make_ascii; /* Are we writing to the net? */
#endif
};
/* Write the buffer out to the socket
** ----------------------------------
*/
PRIVATE void flush ARGS1(HTStream *, me)
{
char *read_pointer = me->buffer;
char *write_pointer = me->write_pointer;
#ifdef NOT_ASCII
if (me->make_ascii) {
char * p;
for(p = me->buffer; p < me->write_pointer; p++)
*p = TOASCII(*p);
}
#endif
while (read_pointer < write_pointer) {
int status;
#ifdef OLD_CODE
status = NETWRITE(me->soc, me->buffer, /* Put timeout? @@@ */
write_pointer - read_pointer);
#endif /* OLD_CODE */
status = NETWRITE(me->soc, read_pointer, write_pointer - read_pointer);
if (status<0) {
if(TRACE) fprintf(stderr,
"HTWrite: Error: write() on socket returns %d !!!\n", status);
return;
}
read_pointer += status;
}
me->write_pointer = me->buffer;
}
/*_________________________________________________________________________
**
** A C T I O N R O U T I N E S
*/
/* Character handling
** ------------------
*/
PRIVATE void HTWriter_put_character ARGS2(HTStream *, me, char, c)
{
if (me->write_pointer == &me->buffer[BUFFER_SIZE]) flush(me);
*me->write_pointer++ = c;
}
/* String handling
** ---------------
**
** Strings must be smaller than this buffer size.
*/
PRIVATE void HTWriter_put_string ARGS2(HTStream *, me, CONST char*, s)
{
int l = strlen(s);
if (me->write_pointer + l > &me->buffer[BUFFER_SIZE]) flush(me);
strcpy(me->write_pointer, s);
me->write_pointer = me->write_pointer + l;
}
/* Buffer write. Buffers can (and should!) be big.
** ------------
*/
PRIVATE void HTWriter_write ARGS3(HTStream *, me, CONST char*, s, int, l)
{
CONST char *read_pointer = s;
CONST char *write_pointer = s+l;
flush(me); /* First get rid of our buffer */
#ifdef NOT_ASCII
if (me->make_ascii) {
char * p;
for(p = me->buffer; p < me->write_pointer; p++)
*p = TOASCII(*p);
}
#endif
while (read_pointer < write_pointer) {
int status = NETWRITE(me->soc, read_pointer,
write_pointer - read_pointer);
if (status<0) {
if(TRACE) fprintf(stderr,
"HTWriter_write: Error on socket output stream!!!\n");
return;
}
read_pointer = read_pointer + status;
}
}
/* Free an HTML object
** -------------------
**
** Note that the SGML parsing context is freed, but the created object is not,
** as it takes on an existence of its own unless explicitly freed.
*/
PRIVATE void HTWriter_free ARGS1(HTStream *, me)
{
flush(me);
if (!me->leave_open)
NETCLOSE(me->soc);
free(me);
}
PRIVATE void HTWriter_abort ARGS2(HTStream *, me, HTError, e)
{
HTWriter_free(me);
}
/* Structured Object Class
** -----------------------
*/
PRIVATE CONST HTStreamClass HTWriter = /* As opposed to print etc */
{
"SocketWriter",
HTWriter_free,
HTWriter_abort,
HTWriter_put_character, HTWriter_put_string,
HTWriter_write
};
/* Subclass-specific Methods
** -------------------------
*/
PUBLIC HTStream* HTWriter_new ARGS1(int, soc)
{
HTStream* me = (HTStream*)calloc(1,sizeof(*me));
if (me == NULL) outofmem(__FILE__, "HTML_new");
me->isa = &HTWriter;
#ifdef NOT_ASCII
me->make_ascii = NO;
#endif
me->soc = soc;
me->write_pointer = me->buffer;
return me;
}
PUBLIC HTStream* HTWriter_newNoClose ARGS1(int, soc)
{
HTStream * me = HTWriter_new(soc);
if (me) me->leave_open = YES;
return me;
}
/* Subclass-specific Methods
** -------------------------
*/
PUBLIC HTStream* HTASCIIWriter ARGS1(int, soc)
{
HTStream* me = (HTStream*)calloc(1,sizeof(*me));
if (me == NULL) outofmem(__FILE__, "HTML_new");
me->isa = &HTWriter;
#ifdef NOT_ASCII
me->make_ascii = YES;
#endif
me->soc = soc;
me->write_pointer = me->buffer;
return me;
}
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