From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 pkg/xtools/gstrentab.x | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 pkg/xtools/gstrentab.x

(limited to 'pkg/xtools/gstrentab.x')

diff --git a/pkg/xtools/gstrentab.x b/pkg/xtools/gstrentab.x
new file mode 100644
index 00000000..2034c7fd
--- /dev/null
+++ b/pkg/xtools/gstrentab.x
@@ -0,0 +1,40 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+# GSTRENTAB -- Procedure to replace blanks with tabs and blanks.
+
+int procedure  gstrentab (line, outline, maxch, tabs)
+
+int   maxch, tabs[ARB]
+char  line[ARB], outline[ARB]
+
+int   ip, op, ltab
+
+begin
+	op = 1
+	ip = 1
+
+	repeat {
+	    ltab = ip
+	    while (line[ltab] == ' ' && op <= maxch) {
+		ltab = ltab + 1
+		if (tabs[ltab] == YES) {
+		    outline[op] = '\t'
+		    ip = ltab
+		    op = op + 1
+		}
+	    }
+	    for (; ip < ltab && op <= maxch; ip = ip + 1) {
+		outline[op] = ' '
+		op = op + 1
+	    }
+	    if (line[ip] == EOS || op >= maxch +1)
+		break
+	    outline[op] = line[ip]
+	    op = op + 1
+	    ip = ip + 1
+	} until (line[ip] == EOS || op >= maxch+1)
+
+	outline[op] = EOS
+	return (op-1)
+end
+
-- 
cgit