+static enum outp_justification
+translate_justification (unsigned int opt)
+{
+ switch (opt & TAB_ALIGN_MASK)
+ {
+ case TAB_RIGHT:
+ return OUTP_RIGHT;
+ case TAB_LEFT:
+ return OUTP_LEFT;
+ case TAB_CENTER:
+ return OUTP_CENTER;
+ default:
+ NOT_REACHED ();
+ }
+}
+
+/* Returns the line style to use for drawing a rule of the given
+ TYPE. */
+static enum outp_line_style
+rule_to_draw_type (unsigned char type)
+{
+ switch (type)
+ {
+ case TAL_0:
+ case TAL_GAP:
+ return OUTP_L_NONE;
+ case TAL_1:
+ return OUTP_L_SINGLE;
+ case TAL_2:
+ return OUTP_L_DOUBLE;
+ default:
+ NOT_REACHED ();
+ }
+}
+
+/* Returns the horizontal rule at the given column and row. */
+static int
+get_hrule (int c, int r)
+{
+ return t->rh[c + r * t->cf];
+}
+
+/* Returns the vertical rule at the given column and row. */
+static int
+get_vrule (int c, int r)
+{
+ return t->rv[c + r * (t->cf + 1)];
+}
+
+/* Renders the horizontal rule at the given column and row
+ at (X,Y) on the page. */
+static void
+render_horz_rule (int x, int y, int c, int r)
+{
+ enum outp_line_style style = rule_to_draw_type (get_hrule (c, r));
+ if (style != OUTP_L_NONE)
+ d->class->line (d, x, y, x + t->w[c], y + t->hrh[r],
+ OUTP_L_NONE, style, OUTP_L_NONE, style);
+}
+
+/* Renders the vertical rule at the given column and row
+ at (X,Y) on the page. */
+static void
+render_vert_rule (int x, int y, int c, int r)
+{
+ enum outp_line_style style = rule_to_draw_type (get_vrule (c, r));
+ if (style != OUTP_L_NONE)
+ d->class->line (d, x, y, x + t->wrv[c], y + t->h[r],
+ style, OUTP_L_NONE, style, OUTP_L_NONE);
+}
+
+/* Renders the rule intersection at the given column and row
+ at (X,Y) on the page. */
+static void
+render_rule_intersection (int x, int y, int c, int r)
+{
+ /* Bounds of intersection. */
+ int x0 = x;
+ int y0 = y;
+ int x1 = x + t->wrv[c];
+ int y1 = y + t->hrh[r];
+
+ /* Lines on each side of intersection. */
+ int top = r > 0 ? get_vrule (c, r - 1) : TAL_0;
+ int left = c > 0 ? get_hrule (c - 1, r) : TAL_0;
+ int bottom = r < t->nr ? get_vrule (c, r) : TAL_0;
+ int right = c < t->nc ? get_hrule (c, r) : TAL_0;
+
+ /* Output style for each line. */
+ enum outp_line_style o_top = rule_to_draw_type (top);
+ enum outp_line_style o_left = rule_to_draw_type (left);
+ enum outp_line_style o_bottom = rule_to_draw_type (bottom);
+ enum outp_line_style o_right = rule_to_draw_type (right);
+
+ if (o_top != OUTP_L_NONE || o_left != OUTP_L_NONE
+ || o_bottom != OUTP_L_NONE || o_right != OUTP_L_NONE)
+ d->class->line (d, x0, y0, x1, y1, o_top, o_left, o_bottom, o_right);
+}