1 files changed, 35 insertions, 0 deletions
diff --git a/sys/qpoe/qpdeletef.x b/sys/qpoe/qpdeletef.x
new file mode 100644
index 00000000..b7c41189
--- /dev/null
+++ b/sys/qpoe/qpdeletef.x
@@ -0,0 +1,35 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+include	"qpoe.h"
+
+# QP_DELETEF -- Delete a header parameter.  It is an error if the named header
+# parameter does not exist.  Deletions are permanent once the datafile is
+# updated.
+
+procedure qp_deletef (qp, param)
+
+pointer	qp			#I QPOE descriptor
+char	param[ARB]		#I parameter name
+
+pointer	sym
+pointer	qp_gpsym()
+errchk	qp_gpsym, syserrs
+
+begin
+	# Access the named parameter.
+	sym = qp_gpsym (qp, param)
+	if (sym == NULL)
+	    call syserrs (SYS_QPUKNPAR, param)
+	else if (and (S_FLAGS(sym), SF_DELETED) != 0)
+	    return
+
+	# If the parameter value is stored in its own lfile, delete it.
+	if (S_LFILE(sym) > LF_STATICPARS)
+	    call fm_lfdelete (QP_FM(qp), S_LFILE(sym))
+
+	# Set the delete bit in the symbol descriptor.
+	S_FLAGS(sym) = or (S_FLAGS(sym), SF_DELETED)
+
+	QP_MODIFIED(qp) = YES
+end