vendor/mandoc/1.12.1

1 files changed, 289 insertions, 0 deletions

diff --git a/term_ascii.c b/term_ascii.c
new file mode 100644
index 000000000000..2f114786f6af
--- /dev/null
+++ b/term_ascii.c
@@ -0,0 +1,289 @@
+/*	$Id: term_ascii.c,v 1.20 2011/12/04 23:10:52 schwarze Exp $ */
+/*
+ * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ *
+ * 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>
+#ifdef USE_WCHAR
+# include <locale.h>
+#endif
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef USE_WCHAR
+# include <wchar.h>
+#endif
+
+#include "mandoc.h"
+#include "out.h"
+#include "term.h"
+#include "main.h"
+
+/* 
+ * Sadly, this doesn't seem to be defined on systems even when they
+ * support it.  For the time being, remove it and let those compiling
+ * the software decide for themselves what to use.
+ */
+#if 0
+#if ! defined(__STDC_ISO_10646__)
+# undef USE_WCHAR
+#endif
+#endif
+
+static	struct termp	 *ascii_init(enum termenc, char *);
+static	double		  ascii_hspan(const struct termp *,
+				const struct roffsu *);
+static	size_t		  ascii_width(const struct termp *, int);
+static	void		  ascii_advance(struct termp *, size_t);
+static	void		  ascii_begin(struct termp *);
+static	void		  ascii_end(struct termp *);
+static	void		  ascii_endline(struct termp *);
+static	void		  ascii_letter(struct termp *, int);
+
+#ifdef	USE_WCHAR
+static	void		  locale_advance(struct termp *, size_t);
+static	void		  locale_endline(struct termp *);
+static	void		  locale_letter(struct termp *, int);
+static	size_t		  locale_width(const struct termp *, int);
+#endif
+
+static struct termp *
+ascii_init(enum termenc enc, char *outopts)
+{
+	const char	*toks[4];
+	char		*v;
+	struct termp	*p;
+
+	p = mandoc_calloc(1, sizeof(struct termp));
+	p->enc = enc;
+
+	p->tabwidth = 5;
+	p->defrmargin = 78;
+
+	p->begin = ascii_begin;
+	p->end = ascii_end;
+	p->hspan = ascii_hspan;
+	p->type = TERMTYPE_CHAR;
+
+	p->enc = TERMENC_ASCII;
+	p->advance = ascii_advance;
+	p->endline = ascii_endline;
+	p->letter = ascii_letter;
+	p->width = ascii_width;
+
+#ifdef	USE_WCHAR
+	if (TERMENC_ASCII != enc) {
+		v = TERMENC_LOCALE == enc ?
+			setlocale(LC_ALL, "") :
+			setlocale(LC_CTYPE, "UTF-8");
+		if (NULL != v && MB_CUR_MAX > 1) {
+			p->enc = enc;
+			p->advance = locale_advance;
+			p->endline = locale_endline;
+			p->letter = locale_letter;
+			p->width = locale_width;
+		}
+	}
+#endif
+
+	toks[0] = "indent";
+	toks[1] = "width";
+	toks[2] = "mdoc";
+	toks[3] = NULL;
+
+	while (outopts && *outopts)
+		switch (getsubopt(&outopts, UNCONST(toks), &v)) {
+		case (0):
+			p->defindent = (size_t)atoi(v);
+			break;
+		case (1):
+			p->defrmargin = (size_t)atoi(v);
+			break;
+		case (2):
+			/*
+			 * Temporary, undocumented mode
+			 * to imitate mdoc(7) output style.
+			 */
+			p->mdocstyle = 1;
+			p->defindent = 5;
+			break;
+		default:
+			break;
+		}
+
+	/* Enforce a lower boundary. */
+	if (p->defrmargin < 58)
+		p->defrmargin = 58;
+
+	return(p);
+}
+
+void *
+ascii_alloc(char *outopts)
+{
+
+	return(ascii_init(TERMENC_ASCII, outopts));
+}
+
+void *
+utf8_alloc(char *outopts)
+{
+
+	return(ascii_init(TERMENC_UTF8, outopts));
+}
+
+
+void *
+locale_alloc(char *outopts)
+{
+
+	return(ascii_init(TERMENC_LOCALE, outopts));
+}
+
+/* ARGSUSED */
+static size_t
+ascii_width(const struct termp *p, int c)
+{
+
+	return(1);
+}
+
+void
+ascii_free(void *arg)
+{
+
+	term_free((struct termp *)arg);
+}
+
+/* ARGSUSED */
+static void
+ascii_letter(struct termp *p, int c)
+{
+	
+	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;
+
+	for (i = 0; i < len; i++)
+		putchar(' ');
+}
+
+/* ARGSUSED */
+static double
+ascii_hspan(const struct termp *p, const struct roffsu *su)
+{
+	double		 r;
+
+	/*
+	 * Approximate based on character width.  These are generated
+	 * entirely by eyeballing the screen, but appear to be correct.
+	 */
+
+	switch (su->unit) {
+	case (SCALE_CM):
+		r = 4 * su->scale;
+		break;
+	case (SCALE_IN):
+		r = 10 * su->scale;
+		break;
+	case (SCALE_PC):
+		r = (10 * su->scale) / 6;
+		break;
+	case (SCALE_PT):
+		r = (10 * su->scale) / 72;
+		break;
+	case (SCALE_MM):
+		r = su->scale / 1000;
+		break;
+	case (SCALE_VS):
+		r = su->scale * 2 - 1;
+		break;
+	default:
+		r = su->scale;
+		break;
+	}
+
+	return(r);
+}
+
+#ifdef USE_WCHAR
+/* ARGSUSED */
+static size_t
+locale_width(const struct termp *p, int c)
+{
+	int		rc;
+
+	return((rc = wcwidth(c)) < 0 ? 0 : rc);
+}
+
+/* ARGSUSED */
+static void
+locale_advance(struct termp *p, size_t len)
+{
+	size_t	 	i;
+
+	for (i = 0; i < len; i++)
+		putwchar(L' ');
+}
+
+/* ARGSUSED */
+static void
+locale_endline(struct termp *p)
+{
+
+	putwchar(L'\n');
+}
+
+/* ARGSUSED */
+static void
+locale_letter(struct termp *p, int c)
+{
+	
+	putwchar(c);
+}
+#endif