X-Git-Url: https://git.cameronkatri.com/mandoc.git/blobdiff_plain/8b811fac9808f46457e2e037bbd37d0e07ea798d..35e4167ecdd8989ebb6e628716d98878b5e632fd:/out.c

diff --git a/out.c b/out.c
index 73689b39..eb303d51 100644
--- a/out.c
+++ b/out.c
@@ -1,6 +1,7 @@
-/*	$Id: out.c,v 1.5 2009/10/18 19:02:10 kristaps Exp $ */
+/*	$Id: out.c,v 1.39 2011/03/17 08:49:34 kristaps Exp $ */
 /*
- * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -14,14 +15,28 @@
  * 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 <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <time.h>
 
+#include "mandoc.h"
 #include "out.h"
 
+static	void	tblcalc_data(struct rofftbl *, struct roffcol *,
+			const struct tbl *, const struct tbl_dat *);
+static	void	tblcalc_literal(struct rofftbl *, struct roffcol *,
+			const struct tbl_dat *);
+static	void	tblcalc_number(struct rofftbl *, struct roffcol *,
+			const struct tbl *, const struct tbl_dat *);
 
 /* 
  * Convert a `scaling unit' to a consistent form, or fail.  Scaling
@@ -110,10 +125,489 @@ a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
 		return(0);
 	}
 
+	/* FIXME: do this in the caller. */
 	if ((dst->scale = atof(buf)) < 0)
 		dst->scale = 0;
 	dst->unit = unit;
-	dst->pt = hasd;
-
 	return(1);
 }
+
+
+/*
+ * Correctly writes the time in nroff form, which differs from standard
+ * form in that a space isn't printed in lieu of the extra %e field for
+ * single-digit dates.
+ */
+void
+time2a(time_t t, char *dst, size_t sz)
+{
+	struct tm	 tm;
+	char		 buf[5];
+	char		*p;
+	size_t		 nsz;
+
+	assert(sz > 1);
+	localtime_r(&t, &tm);
+
+	p = dst;
+	nsz = 0;
+
+	dst[0] = '\0';
+
+	if (0 == (nsz = strftime(p, sz, "%B ", &tm)))
+		return;
+
+	p += (int)nsz;
+	sz -= nsz;
+
+	if (0 == strftime(buf, sizeof(buf), "%e, ", &tm))
+		return;
+
+	nsz = strlcat(p, buf + (' ' == buf[0] ? 1 : 0), sz);
+
+	if (nsz >= sz)
+		return;
+
+	p += (int)nsz;
+	sz -= nsz;
+
+	(void)strftime(p, sz, "%Y", &tm);
+}
+
+
+int
+a2roffdeco(enum roffdeco *d, const char **word, size_t *sz)
+{
+	int		 i, j, lim;
+	char		 term, c;
+	const char	*wp;
+	enum roffdeco	 dd;
+
+	*d = DECO_NONE;
+	lim = i = 0;
+	term = '\0';
+	wp = *word;
+
+	switch ((c = wp[i++])) {
+	case ('('):
+		*d = DECO_SPECIAL;
+		lim = 2;
+		break;
+	case ('F'):
+		/* FALLTHROUGH */
+	case ('f'):
+		*d = 'F' == c ? DECO_FFONT : DECO_FONT;
+
+		switch (wp[i++]) {
+		case ('('):
+			lim = 2;
+			break;
+		case ('['):
+			term = ']';
+			break;
+		case ('3'):
+			/* FALLTHROUGH */
+		case ('B'):
+			*d = DECO_BOLD;
+			return(i);
+		case ('2'):
+			/* FALLTHROUGH */
+		case ('I'):
+			*d = DECO_ITALIC;
+			return(i);
+		case ('P'):
+			*d = DECO_PREVIOUS;
+			return(i);
+		case ('1'):
+			/* FALLTHROUGH */
+		case ('R'):
+			*d = DECO_ROMAN;
+			return(i);
+		default:
+			i--;
+			lim = 1;
+			break;
+		}
+		break;
+	case ('k'):
+		/* FALLTHROUGH */
+	case ('M'):
+		/* FALLTHROUGH */
+	case ('m'):
+		/* FALLTHROUGH */
+	case ('*'):
+		if ('*' == c)
+			*d = DECO_RESERVED;
+
+		switch (wp[i++]) {
+		case ('('):
+			lim = 2;
+			break;
+		case ('['):
+			term = ']';
+			break;
+		default:
+			i--;
+			lim = 1;
+			break;
+		}
+		break;
+
+	case ('N'):
+
+		/*
+		 * Sequence of characters:  backslash,  'N' (i = 0),
+		 * starting delimiter (i = 1), character number (i = 2).
+		 */
+
+		*word = wp + 2;
+		*sz = 0;
+
+		/*
+		 * Cannot use a digit as a starting delimiter;
+		 * but skip the digit anyway.
+		 */
+
+		if (isdigit((int)wp[1]))
+			return(2);
+
+		/*
+		 * Any non-digit terminates the character number.
+		 * That is, the terminating delimiter need not
+		 * match the starting delimiter.
+		 */
+
+		for (i = 2; isdigit((int)wp[i]); i++)
+			(*sz)++;
+
+		/*
+		 * This is only a numbered character
+		 * if the character number has at least one digit.
+		 */
+
+		if (*sz)
+			*d = DECO_NUMBERED;
+
+		/*
+		 * Skip the terminating delimiter, even if it does not
+		 * match, and even if there is no character number.
+		 */
+
+		return(++i);
+
+	case ('h'):
+		/* FALLTHROUGH */
+	case ('v'):
+		/* FALLTHROUGH */
+	case ('s'):
+		j = 0;
+		if ('+' == wp[i] || '-' == wp[i]) {
+			i++;
+			j = 1;
+		}
+
+		switch (wp[i++]) {
+		case ('('):
+			lim = 2;
+			break;
+		case ('['):
+			term = ']';
+			break;
+		case ('\''):
+			term = '\'';
+			break;
+		case ('0'):
+			j = 1;
+			/* FALLTHROUGH */
+		default:
+			i--;
+			lim = 1;
+			break;
+		}
+
+		if ('+' == wp[i] || '-' == wp[i]) {
+			if (j)
+				return(i);
+			i++;
+		} 
+
+		/* Handle embedded numerical subexp or escape. */
+
+		if ('(' == wp[i]) {
+			while (wp[i] && ')' != wp[i])
+				if ('\\' == wp[i++]) {
+					/* Handle embedded escape. */
+					*word = &wp[i];
+					i += a2roffdeco(&dd, word, sz);
+				}
+
+			if (')' == wp[i++])
+				break;
+
+			*d = DECO_NONE;
+			return(i - 1);
+		} else if ('\\' == wp[i]) {
+			*word = &wp[++i];
+			i += a2roffdeco(&dd, word, sz);
+		}
+
+		break;
+	case ('['):
+		*d = DECO_SPECIAL;
+		term = ']';
+		break;
+	case ('c'):
+		*d = DECO_NOSPACE;
+		return(i);
+	case ('z'):
+		*d = DECO_NONE;
+		if ('\\' == wp[i]) {
+			*word = &wp[++i];
+			return(i + a2roffdeco(&dd, word, sz));
+		} else
+			lim = 1;
+		break;
+	case ('o'):
+		/* FALLTHROUGH */
+	case ('w'):
+		if ('\'' == wp[i++]) {
+			term = '\'';
+			break;
+		} 
+		/* FALLTHROUGH */
+	default:
+		*d = DECO_SSPECIAL;
+		i--;
+		lim = 1;
+		break;
+	}
+
+	assert(term || lim);
+	*word = &wp[i];
+
+	if (term) {
+		j = i;
+		while (wp[i] && wp[i] != term)
+			i++;
+		if ('\0' == wp[i]) {
+			*d = DECO_NONE;
+			return(i);
+		}
+
+		assert(i >= j);
+		*sz = (size_t)(i - j);
+
+		return(i + 1);
+	}
+
+	assert(lim > 0);
+	*sz = (size_t)lim;
+
+	for (j = 0; wp[i] && j < lim; j++)
+		i++;
+	if (j < lim)
+		*d = DECO_NONE;
+
+	return(i);
+}
+
+/*
+ * Calculate the abstract widths and decimal positions of columns in a
+ * table.  This routine allocates the columns structures then runs over
+ * all rows and cells in the table.  The function pointers in "tbl" are
+ * used for the actual width calculations.
+ */
+void
+tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
+{
+	const struct tbl_dat	*dp;
+	const struct tbl_head	*hp;
+	struct roffcol		*col;
+
+	/*
+	 * Allocate the master column specifiers.  These will hold the
+	 * widths and decimal positions for all cells in the column.  It
+	 * must be freed and nullified by the caller.
+	 */
+
+	assert(NULL == tbl->cols);
+	tbl->cols = mandoc_calloc
+		((size_t)sp->tbl->cols, sizeof(struct roffcol));
+
+	hp = sp->head;
+
+	for ( ; sp; sp = sp->next) {
+		if (TBL_SPAN_DATA != sp->pos)
+			continue;
+		/*
+		 * Account for the data cells in the layout, matching it
+		 * to data cells in the data section.
+		 */
+		for (dp = sp->first; dp; dp = dp->next) {
+			assert(dp->layout);
+			col = &tbl->cols[dp->layout->head->ident];
+			tblcalc_data(tbl, col, sp->tbl, dp);
+		}
+	}
+
+	/* 
+	 * Calculate width of the spanners.  These get one space for a
+	 * vertical line, two for a double-vertical line. 
+	 */
+
+	for ( ; hp; hp = hp->next) {
+		col = &tbl->cols[hp->ident];
+		switch (hp->pos) {
+		case (TBL_HEAD_VERT):
+			col->width = (*tbl->len)(1, tbl->arg);
+			break;
+		case (TBL_HEAD_DVERT):
+			col->width = (*tbl->len)(2, tbl->arg);
+			break;
+		default:
+			break;
+		}
+	}
+}
+
+static void
+tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
+		const struct tbl *tp, const struct tbl_dat *dp)
+{
+	size_t		 sz;
+
+	/* Branch down into data sub-types. */
+
+	switch (dp->layout->pos) {
+	case (TBL_CELL_HORIZ):
+		/* FALLTHROUGH */
+	case (TBL_CELL_DHORIZ):
+		sz = (*tbl->len)(1, tbl->arg);
+		if (col->width < sz)
+			col->width = sz;
+		break;
+	case (TBL_CELL_LONG):
+		/* FALLTHROUGH */
+	case (TBL_CELL_CENTRE):
+		/* FALLTHROUGH */
+	case (TBL_CELL_LEFT):
+		/* FALLTHROUGH */
+	case (TBL_CELL_RIGHT):
+		tblcalc_literal(tbl, col, dp);
+		break;
+	case (TBL_CELL_NUMBER):
+		tblcalc_number(tbl, col, tp, dp);
+		break;
+	case (TBL_CELL_DOWN):
+		break;
+	default:
+		abort();
+		/* NOTREACHED */
+	}
+}
+
+static void
+tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
+		const struct tbl_dat *dp)
+{
+	size_t		 sz, bufsz, spsz;
+	const char	*str;
+
+	/* 
+	 * Calculate our width and use the spacing, with a minimum
+	 * spacing dictated by position (centre, e.g,. gets a space on
+	 * either side, while right/left get a single adjacent space).
+	 */
+
+	bufsz = spsz = 0;
+	str = dp->string ? dp->string : "";
+	sz = (*tbl->slen)(str, tbl->arg);
+
+	/* FIXME: TBL_DATA_HORIZ et al.? */
+
+	assert(dp->layout);
+	switch (dp->layout->pos) {
+	case (TBL_CELL_LONG):
+		/* FALLTHROUGH */
+	case (TBL_CELL_CENTRE):
+		bufsz = (*tbl->len)(1, tbl->arg);
+		break;
+	default:
+		bufsz = (*tbl->len)(1, tbl->arg);
+		break;
+	}
+
+	if (dp->layout->spacing) {
+		spsz = (*tbl->len)(dp->layout->spacing, tbl->arg);
+		bufsz = bufsz > spsz ? bufsz : spsz;
+	}
+
+	sz += bufsz;
+	if (col->width < sz)
+		col->width = sz;
+}
+
+static void
+tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
+		const struct tbl *tp, const struct tbl_dat *dp)
+{
+	int 		 i;
+	size_t		 sz, psz, ssz, d;
+	const char	*str;
+	char		*cp;
+	char		 buf[2];
+
+	/*
+	 * First calculate number width and decimal place (last + 1 for
+	 * no-decimal numbers).  If the stored decimal is subsequent
+	 * ours, make our size longer by that difference
+	 * (right-"shifting"); similarly, if ours is subsequent the
+	 * stored, then extend the stored size by the difference.
+	 * Finally, re-assign the stored values.
+	 */
+
+	str = dp->string ? dp->string : "";
+	sz = (*tbl->slen)(str, tbl->arg);
+
+	/* FIXME: TBL_DATA_HORIZ et al.? */
+
+	buf[0] = tp->decimal;
+	buf[1] = '\0';
+
+	psz = (*tbl->slen)(buf, tbl->arg);
+
+	if (NULL != (cp = strrchr(str, tp->decimal))) {
+		buf[1] = '\0';
+		for (ssz = 0, i = 0; cp != &str[i]; i++) {
+			buf[0] = str[i];
+			ssz += (*tbl->slen)(buf, tbl->arg);
+		}
+		d = ssz + psz;
+	} else
+		d = sz + psz;
+
+	/* Padding. */
+
+	sz += (*tbl->len)(2, tbl->arg);
+	d += (*tbl->len)(1, tbl->arg);
+
+	/* Adjust the settings for this column. */
+
+	if (col->decimal > d) {
+		sz += col->decimal - d;
+		d = col->decimal;
+	} else
+		col->width += d - col->decimal;
+
+	if (sz > col->width)
+		col->width = sz;
+	if (d > col->decimal)
+		col->decimal = d;
+
+	/* Adjust for stipulated width. */
+
+	if (col->width < dp->layout->spacing)
+		col->width = dp->layout->spacing;
+}
+
+