Initial commit

1 files changed, 80 insertions, 0 deletions

diff --git a/pkg/system/help/prblkhdr.x b/pkg/system/help/prblkhdr.x
new file mode 100644
index 00000000..168965ab
--- /dev/null
+++ b/pkg/system/help/prblkhdr.x
@@ -0,0 +1,80 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	"help.h"
+
+# PR_BLOCK_HEADER -- Print the help block header.  Clear screen first if
+# enabled.  Print header in the form
+#
+#		 MODNAME (section)      title      MODNAME (section) 
+#
+# followed by a blank line.
+
+procedure pr_block_header (hb, modname, ctrl)
+
+pointer	hb		# encode help block header
+char	modname[ARB]	# module name
+pointer	ctrl		# help control block
+
+char	blank
+int	n, center, offset, lmargin, rmargin
+pointer	sp, lbuf, edge, op, hbuf
+int	strlen(), gstrcpy()
+
+begin
+	call smark (sp)
+	call salloc (lbuf, SZ_LINE, TY_CHAR)
+	call salloc (edge, SZ_LINE, TY_CHAR)
+	call salloc (hbuf, SZ_LINE, TY_CHAR)
+
+	# Clear screen.
+	if (H_FORMAT(ctrl) == HF_TEXT) {
+	    if (H_SOFLAG(ctrl) == YES)
+	        call houtput (ctrl, "\f")
+	} else {
+	    call sfree (sp)
+	    return
+	}
+
+	lmargin = H_LMARGIN(ctrl)
+	rmargin = min (H_RMARGIN(ctrl), SZ_LINE-1)
+
+	# Initialize the output line to blanks.
+	blank = ' '
+	call amovkc (blank, Memc[lbuf], SZ_LINE)
+
+	n = strlen (HB_TITLE(hb))
+	center = (lmargin + rmargin) / 2
+	offset = max (lmargin, center - n/2)
+
+	# Center help block title in output line.
+	call amovc (HB_TITLE(hb), Memc[lbuf+offset], min(n,rmargin-offset))
+
+	# Format the MODNAME (section) into the "edge" buffer.  MODNAME is the
+	# module name (one of the keys), transformed to upper case.
+
+	if (HB_NKEYS(hb) >= 1) {
+	    op = edge + gstrcpy (modname, Memc[edge], SZ_LINE)
+	    call strupr (Memc[edge])
+	} else {
+	    Memc[edge] = EOS
+	    op = edge
+	}
+
+	if (HB_SECTION(hb) != EOS) {
+	    call sprintf (Memc[op], SZ_LINE-SZ_KEY, " (%s)")
+		call pargstr (HB_SECTION(hb))
+	}
+
+	n = strlen (Memc[edge])
+	call amovc (Memc[edge], Memc[lbuf+lmargin-1], n)
+	call amovc (Memc[edge], Memc[lbuf + rmargin - n], n)
+
+	Memc[lbuf+rmargin] = '\n'
+	Memc[lbuf+rmargin+1] = EOS
+
+	# Write out the header line, followed by a blank line.
+	call houtput (ctrl, Memc[lbuf])
+	call houtput (ctrl, "\n")
+
+	call sfree (sp)
+end