1 files changed, 51 insertions, 0 deletions
diff --git a/sys/imfort/db/imgatr.x b/sys/imfort/db/imgatr.x
new file mode 100644
index 00000000..5d600cfa
--- /dev/null
+++ b/sys/imfort/db/imgatr.x
@@ -0,0 +1,51 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+include	<ctype.h>
+include	"idb.h"
+
+# IMGATR -- Get the attribute fields (type code and comment) of a header
+# keyword.  A separate, normally typed, call is required to get the keyword
+# value.
+
+procedure imgatr (im, key, dtype, comm, maxch)
+
+pointer	im			# image descriptor
+char	key[ARB]		# parameter to be returned
+int	dtype			# receives datatype code
+char	comm[ARB]		# output string to comment field
+int	maxch
+
+int	op
+pointer	rp, ip
+int	idb_getstring(), idb_findrecord(), imgftype()
+errchk	syserrs, imgftype
+
+begin
+	# Get the field datatype.
+	dtype = imgftype (im, key)
+
+	# Check for a standard header parameter first.
+	if (idb_getstring (im, key, comm, maxch) != ERR) {
+	    comm[1] = EOS
+	    return
+	}
+
+	# Find the record.
+	if (idb_findrecord (im, key, rp) == 0)
+	    call syserrs (SYS_IDBKEYNF, key)
+
+	# Extract the comment field.
+	for (ip=rp+IDB_ENDVALUE;  Memc[ip] != '/' && Memc[ip] != '\n';  ip=ip+1)
+	    ;
+	if (Memc[ip] == '/') {
+	    for (ip=ip+1;  IS_WHITE(Memc[ip]);  ip=ip+1)
+		;
+	    for (op=1;  Memc[ip] != '\n';  ip=ip+1) {
+		comm[op] = Memc[ip]
+		op = op + 1
+	    }
+	    comm[op] = EOS
+	} else
+	    comm[1] = EOS
+end