1 files changed, 358 insertions, 0 deletions
diff --git a/tbl_term.c b/tbl_term.c
new file mode 100644
index 00000000..05ba3d70
--- /dev/null
+++ b/tbl_term.c
@@ -0,0 +1,358 @@
+/*	$Id$ */
+/*
+ * Copyright (c) 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 <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "mandoc.h"
+#include "out.h"
+#include "term.h"
+
+/* FIXME: `n' modifier doesn't always do the right thing. */
+/* FIXME: `n' modifier doesn't use the cell-spacing buffer. */
+
+static	inline void	 tbl_char(struct termp *, char, int);
+static	void		 tbl_hframe(struct termp *, 
+				const struct tbl_span *);
+static	void		 tbl_data_number(struct termp *, 
+				const struct tbl *, 
+				const struct tbl_dat *, int);
+static	void		 tbl_data_literal(struct termp *, 
+				const struct tbl_dat *, int);
+static	void		 tbl_data_spanner(struct termp *, 
+				const struct tbl_dat *, int);
+static	void		 tbl_data(struct termp *, const struct tbl *,
+				const struct tbl_dat *, int);
+static	void		 tbl_spanner(struct termp *, 
+				const struct tbl_head *);
+static	void		 tbl_hrule(struct termp *, 
+				const struct tbl_span *);
+static	void		 tbl_vframe(struct termp *, const struct tbl *);
+
+void
+term_tbl(struct termp *tp, const struct tbl_span *sp)
+{
+	const struct tbl_head *hp;
+	const struct tbl_dat *dp;
+
+	if (TBL_SPAN_FIRST & sp->flags)
+		term_flushln(tp);
+
+	if (TBL_SPAN_FIRST & sp->flags)
+		tbl_hframe(tp, sp);
+
+	tp->flags |= TERMP_NONOSPACE;
+	tp->flags |= TERMP_NOSPACE;
+
+	tbl_vframe(tp, sp->tbl);
+
+	switch (sp->pos) {
+	case (TBL_SPAN_HORIZ):
+		/* FALLTHROUGH */
+	case (TBL_SPAN_DHORIZ):
+		tbl_hrule(tp, sp);
+		tbl_vframe(tp, sp->tbl);
+		term_newln(tp);
+		tp->flags &= ~TERMP_NONOSPACE;
+		return;
+	default:
+		break;
+	}
+
+	dp = sp->first;
+	for (hp = sp->head; hp; hp = hp->next) {
+		switch (hp->pos) {
+		case (TBL_HEAD_VERT):
+			/* FALLTHROUGH */
+		case (TBL_HEAD_DVERT):
+			tbl_spanner(tp, hp);
+			break;
+		case (TBL_HEAD_DATA):
+			tbl_data(tp, sp->tbl, dp, hp->width);
+			if (dp)
+				dp = dp->next;
+			break;
+		default:
+			abort();
+			/* NOTREACHED */
+		}
+	}
+
+	tbl_vframe(tp, sp->tbl);
+	term_flushln(tp);
+
+	if (TBL_SPAN_LAST & sp->flags)
+		tbl_hframe(tp, sp);
+
+	tp->flags &= ~TERMP_NONOSPACE;
+
+}
+
+static void
+tbl_hrule(struct termp *tp, const struct tbl_span *sp)
+{
+	const struct tbl_head *hp;
+	char		 c;
+
+	/*
+	 * An hrule extends across the entire table and is demarked by a
+	 * standalone `_' or whatnot in lieu of a table row.  Spanning
+	 * headers are marked by a `+', as are table boundaries.
+	 */
+
+	c = '-';
+	if (TBL_SPAN_DHORIZ == sp->pos)
+		c = '=';
+
+	/* FIXME: don't use `+' between data and a spanner! */
+
+	for (hp = sp->head; hp; hp = hp->next) {
+		switch (hp->pos) {
+		case (TBL_HEAD_DATA):
+			tbl_char(tp, c, hp->width);
+			break;
+		case (TBL_HEAD_DVERT):
+			tbl_char(tp, '+', hp->width);
+			/* FALLTHROUGH */
+		case (TBL_HEAD_VERT):
+			tbl_char(tp, '+', hp->width);
+			break;
+		default:
+			abort();
+			/* NOTREACHED */
+		}
+	}
+}
+
+static void
+tbl_hframe(struct termp *tp, const struct tbl_span *sp)
+{
+	const struct tbl_head *hp;
+
+	if ( ! (TBL_OPT_BOX & sp->tbl->opts || 
+			TBL_OPT_DBOX & sp->tbl->opts))
+		return;
+
+	tp->flags |= TERMP_NONOSPACE;
+	tp->flags |= TERMP_NOSPACE;
+
+	/* 
+	 * Print out the horizontal part of a frame or double frame.  A
+	 * double frame has an unbroken `-' outer line the width of the
+	 * table, bordered by `+'.  The frame (or inner frame, in the
+	 * case of the double frame) is a `-' bordered by `+' and broken
+	 * by `+' whenever a span is encountered.
+	 */
+
+	if (TBL_OPT_DBOX & sp->tbl->opts) {
+		term_word(tp, "+");
+		for (hp = sp->head; hp; hp = hp->next)
+			tbl_char(tp, '-', hp->width);
+		term_word(tp, "+");
+		term_flushln(tp);
+	}
+
+	term_word(tp, "+");
+	for (hp = sp->head; hp; hp = hp->next) {
+		switch (hp->pos) {
+		case (TBL_HEAD_DATA):
+			tbl_char(tp, '-', hp->width);
+			break;
+		default:
+			tbl_char(tp, '+', hp->width);
+			break;
+		}
+	}
+	term_word(tp, "+");
+	term_flushln(tp);
+}
+
+static void
+tbl_data(struct termp *tp, const struct tbl *tbl,
+		const struct tbl_dat *dp, int width)
+{
+	enum tbl_cellt	 pos;
+
+	if (NULL == dp) {
+		tbl_char(tp, ASCII_NBRSP, width);
+		return;
+	}
+
+	switch (dp->pos) {
+	case (TBL_DATA_HORIZ):
+		/* FALLTHROUGH */
+	case (TBL_DATA_DHORIZ):
+		tbl_data_spanner(tp, dp, width);
+		return;
+	default:
+		break;
+	}
+	
+	pos = dp->layout ? dp->layout->pos : TBL_CELL_LEFT;
+
+	switch (pos) {
+	case (TBL_CELL_HORIZ):
+		/* FALLTHROUGH */
+	case (TBL_CELL_DHORIZ):
+		tbl_data_spanner(tp, dp, width);
+		break;
+	case (TBL_CELL_LONG):
+		/* FALLTHROUGH */
+	case (TBL_CELL_CENTRE):
+		/* FALLTHROUGH */
+	case (TBL_CELL_LEFT):
+		/* FALLTHROUGH */
+	case (TBL_CELL_RIGHT):
+		tbl_data_literal(tp, dp, width);
+		break;
+	case (TBL_CELL_NUMBER):
+		tbl_data_number(tp, tbl, dp, width);
+		break;
+	default:
+		abort();
+		/* NOTREACHED */
+	}
+}
+static void
+tbl_spanner(struct termp *tp, const struct tbl_head *hp)
+{
+
+	switch (hp->pos) {
+	case (TBL_HEAD_VERT):
+		term_word(tp, "|");
+		break;
+	case (TBL_HEAD_DVERT):
+		term_word(tp, "||");
+		break;
+	default:
+		break;
+	}
+}
+
+static void
+tbl_vframe(struct termp *tp, const struct tbl *tbl)
+{
+	/* Always just a single vertical line. */
+
+	if (TBL_OPT_BOX & tbl->opts || TBL_OPT_DBOX & tbl->opts)
+		term_word(tp, "|");
+}
+
+
+static inline void
+tbl_char(struct termp *tp, char c, int len)
+{
+	int		i;
+	char		cp[2];
+
+	cp[0] = c;
+	cp[1] = '\0';
+
+	for (i = 0; i < len; i++)
+		term_word(tp, cp);
+}
+
+static void
+tbl_data_spanner(struct termp *tp, const struct tbl_dat *dp, int width)
+{
+
+	switch (dp->pos) {
+	case (TBL_DATA_HORIZ):
+	case (TBL_DATA_NHORIZ):
+		tbl_char(tp, '-', width);
+		break;
+	case (TBL_DATA_DHORIZ):
+	case (TBL_DATA_NDHORIZ):
+		tbl_char(tp, '=', width);
+		break;
+	default:
+		break;
+	}
+}
+
+static void
+tbl_data_literal(struct termp *tp, const struct tbl_dat *dp, int width)
+{
+	int		 padl, padr;
+	enum tbl_cellt	 pos;
+
+	padl = padr = 0;
+
+	pos = dp->layout ? dp->layout->pos : TBL_CELL_LEFT;
+
+	switch (pos) {
+	case (TBL_CELL_LONG):
+		padl = 1;
+		padr = width - (int)strlen(dp->string) - 1;
+		break;
+	case (TBL_CELL_CENTRE):
+		padl = width - (int)strlen(dp->string);
+		if (padl % 2)
+			padr++;
+		padl /= 2;
+		padr += padl;
+		break;
+	case (TBL_CELL_RIGHT):
+		padl = width - (int)strlen(dp->string);
+		break;
+	default:
+		padr = width - (int)strlen(dp->string);
+		break;
+	}
+
+	tbl_char(tp, ASCII_NBRSP, padl);
+	term_word(tp, dp->string);
+	tbl_char(tp, ASCII_NBRSP, padr);
+}
+
+static void
+tbl_data_number(struct termp *tp, const struct tbl *tbl,
+		const struct tbl_dat *dp, int width)
+{
+	char		*decp, pnt;
+	int		 d, padl, sz;
+
+	/*
+	 * See calc_data_number().  Left-pad by taking the offset of our
+	 * and the maximum decimal; right-pad by the remaining amount.
+	 */
+
+	sz = (int)strlen(dp->string);
+	pnt = tbl->decimal;
+
+	if (NULL == (decp = strchr(dp->string, pnt))) {
+		d = sz + 1;
+	} else {
+		d = (int)(decp - dp->string) + 1;
+	}
+
+	assert(d <= dp->layout->head->decimal);
+	assert(sz - d <= dp->layout->head->width -
+			dp->layout->head->decimal);
+
+	padl = dp->layout->head->decimal - d + 1;
+	assert(width - sz - padl);
+
+	tbl_char(tp, ASCII_NBRSP, padl);
+	term_word(tp, dp->string);
+	tbl_char(tp, ASCII_NBRSP, width - sz - padl);
+}