snapshot of project "lynx", label v2_6

1 files changed, 189 insertions, 0 deletions

diff --git a/WWW/Library/Implementation/HTWriter.c b/WWW/Library/Implementation/HTWriter.c
new file mode 100644
index 00000000..03a55648
--- /dev/null
+++ b/WWW/Library/Implementation/HTWriter.c
@@ -0,0 +1,189 @@
+/*		FILE WRITER			HTWrite.c
+**		===========
+**
+*/
+#include "HTUtils.h"
+#include "tcp.h"
+
+#include "HTWriter.h"
+
+#define BUFFER_SIZE 4096	/* Tradeoff */
+
+/*#include <stdio.h> included by HTUtils.h -- FM */
+
+#include "LYLeaks.h"
+
+#define FREE(x) if (x) {free(x); x = NULL;}
+
+/*		HTML Object
+**		-----------
+*/
+
+struct _HTStream {
+	CONST HTStreamClass *	isa;
+
+	int	soc;
+	char	*write_pointer;
+	char 	buffer[BUFFER_SIZE];
+#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_ASCCII
+    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;
+	status = NETWRITE(me->soc, me->buffer,  /* Put timeout? @@@ */
+			write_pointer - read_pointer);
+	if (status<0) {
+	    if(TRACE) fprintf(stderr,
+	    "HTWrite: Error: write() on socket returns %d !!!\n", status);
+	    return;
+	}
+	read_pointer = 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 */
+
+    while (read_pointer < write_pointer) {
+        int status = NETWRITE(me->soc, (char *)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);
+    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*)malloc(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;
+}
+
+/*	Subclass-specific Methods
+**	-------------------------
+*/
+
+PUBLIC HTStream* HTASCIIWriter ARGS1(int, soc)
+{
+    HTStream* me = (HTStream*)malloc(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;
+}
+