minimal initial -Tps support, from kristaps@ GSOC

so far, monospace without font decoration,
but it already has page headers and footers

1 files changed, 304 insertions, 0 deletions

diff --git a/usr.bin/mandoc/term_ps.c b/usr.bin/mandoc/term_ps.c
new file mode 100644
index 00000000000..8d887c74d4a
--- /dev/null
+++ b/usr.bin/mandoc/term_ps.c
@@ -0,0 +1,304 @@
+/*	$Id: term_ps.c,v 1.1 2010/06/10 22:50:10 schwarze 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/param.h>
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "out.h"
+#include "main.h"
+#include "term.h"
+
+#define	PS_CHAR_WIDTH	  6
+#define	PS_CHAR_HEIGHT	  12
+#define	PS_CHAR_TOPMARG	 (792 - 24)
+#define	PS_CHAR_TOP	 (PS_CHAR_TOPMARG - 36)
+#define	PS_CHAR_LEFT	  36
+#define	PS_CHAR_BOTMARG	  24
+#define	PS_CHAR_BOT	 (PS_CHAR_BOTMARG + 36)
+
+#define	PS_BUFSLOP	  128
+#define	PS_GROWBUF(p, sz) \
+	do if ((p)->engine.ps.psmargcur + (sz) > \
+			(p)->engine.ps.psmargsz) { \
+		(p)->engine.ps.psmargsz += /* CONSTCOND */ \
+			MAX(PS_BUFSLOP, (sz)); \
+		(p)->engine.ps.psmarg = realloc \
+			((p)->engine.ps.psmarg,  \
+			 (p)->engine.ps.psmargsz); \
+		if (NULL == (p)->engine.ps.psmarg) { \
+			perror(NULL); \
+			exit(EXIT_FAILURE); \
+		} \
+	} while (/* CONSTCOND */ 0)
+
+static	void		  ps_letter(struct termp *, char);
+static	void		  ps_begin(struct termp *);
+static	void		  ps_end(struct termp *);
+static	void		  ps_advance(struct termp *, size_t);
+static	void		  ps_endline(struct termp *);
+static	void		  ps_printf(struct termp *, const char *, ...);
+static	void		  ps_putchar(struct termp *, char);
+
+
+void *
+ps_alloc(void)
+{
+	struct termp	*p;
+
+	if (NULL == (p = term_alloc(TERMENC_ASCII)))
+		return(NULL);
+
+	p->type = TERMTYPE_PS;
+	p->letter = ps_letter;
+	p->begin = ps_begin;
+	p->end = ps_end;
+	p->advance = ps_advance;
+	p->endline = ps_endline;
+	return(p);
+}
+
+
+void
+ps_free(void *arg)
+{
+	struct termp	*p;
+
+	p = (struct termp *)arg;
+
+	if (p->engine.ps.psmarg)
+		free(p->engine.ps.psmarg);
+
+	term_free(p);
+}
+
+
+static void
+ps_printf(struct termp *p, const char *fmt, ...)
+{
+	va_list		 ap;
+	int		 pos;
+
+	va_start(ap, fmt);
+
+	/*
+	 * If we're running in regular mode, then pipe directly into
+	 * vprintf().  If we're processing margins, then push the data
+	 * into our growable margin buffer.
+	 */
+
+	if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
+		vprintf(fmt, ap);
+		va_end(ap);
+		return;
+	}
+
+	/* 
+	 * XXX: I assume that the in-margin print won't exceed
+	 * PS_BUFSLOP (128 bytes), which is reasonable but still an
+	 * assumption that will cause pukeage if it's not the case.
+	 */
+
+	PS_GROWBUF(p, PS_BUFSLOP);
+
+	pos = (int)p->engine.ps.psmargcur;
+	vsnprintf(&p->engine.ps.psmarg[pos], PS_BUFSLOP, fmt, ap);
+	p->engine.ps.psmargcur = strlen(p->engine.ps.psmarg);
+
+	va_end(ap);
+}
+
+
+static void
+ps_putchar(struct termp *p, char c)
+{
+	int		 pos;
+
+	/* See ps_printf(). */
+
+	if ( ! (PS_MARGINS & p->engine.ps.psstate)) {
+		putchar(c);
+		return;
+	}
+
+	PS_GROWBUF(p, 2);
+
+	pos = (int)p->engine.ps.psmargcur++;
+	p->engine.ps.psmarg[pos++] = c;
+	p->engine.ps.psmarg[pos] = '\0';
+}
+
+
+/* ARGSUSED */
+static void
+ps_end(struct termp *p)
+{
+
+	/*
+	 * At the end of the file, do one last showpage.  This is the
+	 * same behaviour as groff(1) and works for multiple pages as
+	 * well as just one.
+	 */
+
+	assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
+	printf("%s", p->engine.ps.psmarg);
+	printf("showpage\n");
+	printf("%s\n", "%%EOF");
+}
+
+
+static void
+ps_begin(struct termp *p)
+{
+
+	/*
+	 * Emit the standard PostScript prologue, set our initial page
+	 * position, then run pageopen() on the initial page.
+	 */
+
+	printf("%s\n", "%!PS");
+	printf("%s\n", "/Courier");
+	printf("%s\n", "10 selectfont");
+
+	p->engine.ps.psstate = 0;
+
+	if (p->engine.ps.psmarg) {
+		assert(p->engine.ps.psmargsz);
+		p->engine.ps.psmarg[0] = '\0';
+	}
+
+	p->engine.ps.psmargcur = 0;
+
+	/*
+	 * Now dump the margins into our margin buffer.  If we don't do
+	 * this, we'd break any current state to run the header and
+	 * footer with each and evern new page.
+	 */
+
+	p->engine.ps.pscol = PS_CHAR_LEFT;
+	p->engine.ps.psrow = PS_CHAR_TOPMARG;
+
+	p->engine.ps.psstate |= PS_MARGINS;
+
+	(*p->headf)(p, p->argf);
+	(*p->endline)(p);
+
+	p->engine.ps.psstate &= ~PS_MARGINS;
+	assert(0 == p->engine.ps.psstate);
+
+	p->engine.ps.pscol = PS_CHAR_LEFT;
+	p->engine.ps.psrow = PS_CHAR_BOTMARG;
+	p->engine.ps.psstate |= PS_MARGINS;
+
+	(*p->footf)(p, p->argf);
+	(*p->endline)(p);
+
+	p->engine.ps.psstate &= ~PS_MARGINS;
+	assert(0 == p->engine.ps.psstate);
+
+	p->engine.ps.pscol = PS_CHAR_LEFT;
+	p->engine.ps.psrow = PS_CHAR_TOP;
+
+	assert(p->engine.ps.psmarg);
+	assert('\0' != p->engine.ps.psmarg[0]);
+}
+
+
+static void
+ps_letter(struct termp *p, char c)
+{
+	
+	if ( ! (PS_INLINE & p->engine.ps.psstate)) {
+		/*
+		 * If we're not in a PostScript "word" context, then
+		 * open one now at the current cursor.
+		 */
+		ps_printf(p, "%zu %zu moveto\n(", 
+				p->engine.ps.pscol, 
+				p->engine.ps.psrow);
+		p->engine.ps.psstate |= PS_INLINE;
+	}
+
+	/*
+	 * We need to escape these characters as per the PostScript
+	 * specification.  We would also escape non-graphable characters
+	 * (like tabs), but none of them would get to this point and
+	 * it's superfluous to abort() on them.
+	 */
+
+	switch (c) {
+	case ('('):
+		/* FALLTHROUGH */
+	case (')'):
+		/* FALLTHROUGH */
+	case ('\\'):
+		ps_putchar(p, '\\');
+		break;
+	default:
+		break;
+	}
+
+	/* Write the character and adjust where we are on the page. */
+	ps_putchar(p, c);
+	p->engine.ps.pscol += PS_CHAR_WIDTH;
+}
+
+
+static void
+ps_advance(struct termp *p, size_t len)
+{
+
+	if (PS_INLINE & p->engine.ps.psstate) {
+		/* Dump out any existing line scope. */
+		ps_printf(p, ") show\n");
+		p->engine.ps.psstate &= ~PS_INLINE;
+	}
+
+	p->engine.ps.pscol += len ? len * PS_CHAR_WIDTH : 0;
+}
+
+
+static void
+ps_endline(struct termp *p)
+{
+
+	if (PS_INLINE & p->engine.ps.psstate) {
+		ps_printf(p, ") show\n");
+		p->engine.ps.psstate &= ~PS_INLINE;
+	} 
+
+	if (PS_MARGINS & p->engine.ps.psstate)
+		return;
+
+	p->engine.ps.pscol = PS_CHAR_LEFT;
+	if (p->engine.ps.psrow >= PS_CHAR_HEIGHT + PS_CHAR_BOT) {
+		p->engine.ps.psrow -= PS_CHAR_HEIGHT;
+		return;
+	}
+
+	assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
+	printf("%s", p->engine.ps.psmarg);
+	printf("showpage\n");
+	p->engine.ps.psrow = PS_CHAR_TOP;
+}