Repatch (from linux) of OSX IRAF

1 files changed, 31 insertions, 0 deletions

diff --git a/sys/etc/envindir.x b/sys/etc/envindir.x
new file mode 100644
index 00000000..48902eee
--- /dev/null
+++ b/sys/etc/envindir.x
@@ -0,0 +1,31 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+
+# ENVINDIR -- Return the name of an environment variable which may be given
+# by the value of another environment variable as "@envvar".
+
+procedure envindir (envvar, outstr, maxch)
+
+char	envvar[ARB]		# possibly indirect env. variable name
+char	outstr[ARB]		# receives value of variable
+int	maxch
+
+pointer	sp, envname
+int	envfind()
+errchk	syserrs
+
+begin
+	call smark (sp)
+	call salloc (envname, SZ_FNAME, TY_CHAR)
+
+	call strcpy (envvar, outstr, maxch)
+
+	while (outstr[1] == '@') {
+	    call strcpy (outstr[2], Memc[envname], SZ_FNAME)
+	    if (envfind (Memc[envname], outstr, maxch) <= 0)
+		call syserrs (SYS_ENVNF, Memc[envname])
+	}
+
+	call sfree (sp)
+end