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-rw-r--r--tbl_term.c358
1 files changed, 358 insertions, 0 deletions
diff --git a/tbl_term.c b/tbl_term.c
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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);
+}