===================================================================
RCS file: /cvs/mandoc/out.c,v
retrieving revision 1.1
retrieving revision 1.44
diff -u -p -r1.1 -r1.44
--- mandoc/out.c	2009/09/21 00:39:02	1.1
+++ mandoc/out.c	2012/05/27 17:54:54	1.44
@@ -1,6 +1,7 @@
-/*	$Id: out.c,v 1.1 2009/09/21 00:39:02 kristaps Exp $ */
+/*	$Id: out.c,v 1.44 2012/05/27 17:54:54 schwarze 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
@@ -14,100 +15,270 @@
  * 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 "mdoc.h"
-#include "man.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
+ * units are documented in groff.7, mdoc.7, man.7.
+ */
 int
-out_a2list(const struct mdoc_node *n)
+a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
 {
+	char		 buf[BUFSIZ], hasd;
 	int		 i;
+	enum roffscale	 unit;
 
-	assert(MDOC_BLOCK == n->type && MDOC_Bl == n->tok);
-	assert(n->args);
+	if ('\0' == *src)
+		return(0);
 
-	for (i = 0; i < (int)n->args->argc; i++) 
-		switch (n->args->argv[i].arg) {
-		case (MDOC_Enum):
-			/* FALLTHROUGH */
-		case (MDOC_Dash):
-			/* FALLTHROUGH */
-		case (MDOC_Hyphen):
-			/* FALLTHROUGH */
-		case (MDOC_Bullet):
-			/* FALLTHROUGH */
-		case (MDOC_Tag):
-			/* FALLTHROUGH */
-		case (MDOC_Hang):
-			/* FALLTHROUGH */
-		case (MDOC_Inset):
-			/* FALLTHROUGH */
-		case (MDOC_Diag):
-			/* FALLTHROUGH */
-		case (MDOC_Item):
-			/* FALLTHROUGH */
-		case (MDOC_Column):
-			/* FALLTHROUGH */
-		case (MDOC_Ohang):
-			return(n->args->argv[i].arg);
-		default:
-			break;
-		}
+	i = hasd = 0;
 
-	abort();
-	/* NOTREACHED */
-}
+	switch (*src) {
+	case ('+'):
+		src++;
+		break;
+	case ('-'):
+		buf[i++] = *src++;
+		break;
+	default:
+		break;
+	}
 
+	if ('\0' == *src)
+		return(0);
 
-int
-out_a2width(const char *p)
-{
-	int		 i, len;
+	while (i < BUFSIZ) {
+		if ( ! isdigit((unsigned char)*src)) {
+			if ('.' != *src)
+				break;
+			else if (hasd)
+				break;
+			else
+				hasd = 1;
+		}
+		buf[i++] = *src++;
+	}
 
-	if (0 == (len = (int)strlen(p)))
+	if (BUFSIZ == i || (*src && *(src + 1)))
 		return(0);
-	for (i = 0; i < len - 1; i++) 
-		if ( ! isdigit((u_char)p[i]))
-			break;
 
-	if (i == len - 1) 
-		if ('n' == p[len - 1] || 'm' == p[len - 1])
-			return(atoi(p) + 2);
+	buf[i] = '\0';
 
-	return(len + 2);
+	switch (*src) {
+	case ('c'):
+		unit = SCALE_CM;
+		break;
+	case ('i'):
+		unit = SCALE_IN;
+		break;
+	case ('P'):
+		unit = SCALE_PC;
+		break;
+	case ('p'):
+		unit = SCALE_PT;
+		break;
+	case ('f'):
+		unit = SCALE_FS;
+		break;
+	case ('v'):
+		unit = SCALE_VS;
+		break;
+	case ('m'):
+		unit = SCALE_EM;
+		break;
+	case ('\0'):
+		if (SCALE_MAX == def)
+			return(0);
+		unit = SCALE_BU;
+		break;
+	case ('u'):
+		unit = SCALE_BU;
+		break;
+	case ('M'):
+		unit = SCALE_MM;
+		break;
+	case ('n'):
+		unit = SCALE_EN;
+		break;
+	default:
+		return(0);
+	}
+
+	/* FIXME: do this in the caller. */
+	if ((dst->scale = atof(buf)) < 0)
+		dst->scale = 0;
+	dst->unit = unit;
+	return(1);
 }
 
+/*
+ * 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;
+	int			 spans;
 
-int
-out_a2offs(const char *p, int indent)
+	/*
+	 * 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;
+		spans = 1;
+		/*
+		 * 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) {
+			/* Do not used spanned cells in the calculation. */
+			if (0 < --spans)
+				continue;
+			spans = dp->spans;
+			if (1 < spans)
+				continue;
+			assert(dp->layout);
+			col = &tbl->cols[dp->layout->head->ident];
+			tblcalc_data(tbl, col, sp->tbl, dp);
+		}
+	}
+}
+
+static void
+tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
+		const struct tbl *tp, const struct tbl_dat *dp)
 {
-	int		 len, i;
+	size_t		 sz;
 
-	if (0 == strcmp(p, "left"))
-		return(0);
-	if (0 == strcmp(p, "indent"))
-		return(indent + 1);
-	if (0 == strcmp(p, "indent-two"))
-		return((indent + 1) * 2);
+	/* Branch down into data sub-types. */
 
-	if (0 == (len = (int)strlen(p)))
-		return(0);
+	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 */
+	}
+}
 
-	for (i = 0; i < len - 1; i++) 
-		if ( ! isdigit((u_char)p[i]))
-			break;
+static void
+tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
+		const struct tbl_dat *dp)
+{
+	size_t		 sz;
+	const char	*str;
 
-	if (i == len - 1) 
-		if ('n' == p[len - 1] || 'm' == p[len - 1])
-			return(atoi(p));
+	str = dp->string ? dp->string : "";
+	sz = (*tbl->slen)(str, tbl->arg);
 
-	return(len);
+	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
+	 * non-decimal numbers).  If the stored decimal is subsequent to
+	 * 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;
+
+	/* 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;
+}