Broke ascii_*() functions into term_ascii.c

Made low-level engine functions into function pointers.

1 files changed, 128 insertions, 0 deletions

diff --git a/term_ascii.c b/term_ascii.c
new file mode 100644
index 00000000..36b4942a
--- /dev/null
+++ b/term_ascii.c
@@ -0,0 +1,128 @@
+/*	$Id: term_ascii.c,v 1.1 2010/06/08 15:00:17 kristaps Exp $ */
+/*
+ * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, 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.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "out.h"
+#include "term.h"
+#include "main.h"
+
+static	void		  ascii_endline(struct termp *);
+static	void		  ascii_letter(struct termp *, char);
+static	void		  ascii_begin(struct termp *);
+static	void		  ascii_advance(struct termp *, size_t);
+static	void		  ascii_end(struct termp *);
+
+
+void *
+ascii_alloc(char *outopts)
+{
+	struct termp	*p;
+	const char	*toks[2];
+	char		*v;
+
+	if (NULL == (p = term_alloc(TERMENC_ASCII)))
+		return(NULL);
+
+	p->type = TERMTYPE_CHAR;
+	p->letter = ascii_letter;
+	p->begin = ascii_begin;
+	p->end = ascii_end;
+	p->endline = ascii_endline;
+	p->advance = ascii_advance;
+
+	toks[0] = "width";
+	toks[1] = NULL;
+
+	while (outopts && *outopts)
+		switch (getsubopt(&outopts, UNCONST(toks), &v)) {
+		case (0):
+			p->defrmargin = (size_t)atoi(v);
+			break;
+		default:
+			break;
+		}
+
+	/* Enforce a lower boundary. */
+	if (p->defrmargin < 58)
+		p->defrmargin = 58;
+
+	return(p);
+}
+
+
+void
+ascii_free(void *arg)
+{
+
+	term_free((struct termp *)arg);
+}
+
+
+/* ARGSUSED */
+static void
+ascii_letter(struct termp *p, char c)
+{
+	
+	/* Just push onto the screen. */
+	putchar(c);
+}
+
+
+static void
+ascii_begin(struct termp *p)
+{
+
+	(*p->headf)(p, p->argf);
+}
+
+
+static void
+ascii_end(struct termp *p)
+{
+
+	(*p->footf)(p, p->argf);
+}
+
+
+/* ARGSUSED */
+static void
+ascii_endline(struct termp *p)
+{
+
+	putchar('\n');
+}
+
+
+/* ARGSUSED */
+static void
+ascii_advance(struct termp *p, size_t len)
+{
+	size_t	 	i;
+
+	/* Just print whitespace on the terminal. */
+	for (i = 0; i < len; i++)
+		putchar(' ');
+}