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

---
 sys/gio/sgikern/t_sgideco.x | 106 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 sys/gio/sgikern/t_sgideco.x

(limited to 'sys/gio/sgikern/t_sgideco.x')

diff --git a/sys/gio/sgikern/t_sgideco.x b/sys/gio/sgikern/t_sgideco.x
new file mode 100644
index 00000000..57dae876
--- /dev/null
+++ b/sys/gio/sgikern/t_sgideco.x
@@ -0,0 +1,106 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<error.h>
+include	<gki.h>
+include	"sgk.h"
+
+define	LEN_MCBUF	3000
+
+
+# SGIDECODE -- Decode an SGI metacode file, printing the decoded metacode
+# instructions on the standard output.
+
+procedure t_sgidecode()
+
+pointer	sp, fname, mcbuf, ip, itop
+int	fd, list, verbose, gkiunits, nwords
+
+bool	clgetb()
+int	clpopni(), clgfil(), clplen(), open(), btoi(), miireads()
+
+begin
+	call smark (sp)
+	call salloc (fname, SZ_FNAME, TY_CHAR)
+	call salloc (mcbuf, LEN_MCBUF, TY_SHORT)
+
+	# Open list of metafiles to be decoded.
+	list = clpopni ("input")
+
+	if (clgetb ("generic")) {
+	    verbose = NO
+	    gkiunits = NO
+	} else {
+	    verbose = btoi (clgetb ("verbose"))
+	    gkiunits = btoi (clgetb ("gkiunits"))
+	}
+
+	# Process a list of metacode files, writing the decoded metacode
+	# instructions on the standard output.
+
+	while (clgfil (list, Memc[fname], SZ_FNAME) != EOF) {
+	    # Print header if new file.
+	    if (clplen (list) > 1) {
+		call printf ("\n# METAFILE `%s':\n")
+		    call pargstr (Memc[fname])
+	    }
+
+	    # Open input file.
+	    iferr (fd = open (Memc[fname], READ_ONLY, BINARY_FILE)) {
+		call erract (EA_WARN)
+		next
+	    }
+
+	    # Process the metacode.
+
+	    itop = mcbuf
+	    ip   = mcbuf
+
+	    repeat {
+		if (ip >= itop) {
+		    # Refill buffer.
+		    nwords = miireads (fd, Mems[mcbuf], LEN_MCBUF)
+		    if (nwords == EOF)
+			break
+		    itop = mcbuf + nwords
+		    ip = mcbuf
+		}
+		
+		switch (Mems[ip]) {
+		case SGK_FRAME:
+		    call printf ("new_frame\n")
+		case SGK_MOVE:
+		    if (gkiunits == YES) {
+			call printf ("move (%d, %d)\n")
+			    call pargs (Mems[ip+1])
+			    call pargs (Mems[ip+2])
+		    } else {
+			call printf ("move (%0.5f, %0.5f)\n")
+			    call pargr (real(Mems[ip+1]) / real(GKI_MAXNDC))
+			    call pargr (real(Mems[ip+2]) / real(GKI_MAXNDC))
+		    }
+		case SGK_DRAW:
+		    if (gkiunits == YES) {
+			call printf ("draw (%d, %d)\n")
+			    call pargs (Mems[ip+1])
+			    call pargs (Mems[ip+2])
+		    } else {
+			call printf ("draw (%0.5f, %0.5f)\n")
+			    call pargr (real(Mems[ip+1]) / real(GKI_MAXNDC))
+			    call pargr (real(Mems[ip+2]) / real(GKI_MAXNDC))
+		    }
+		case SGK_SETLW:
+		    call printf ("set_linewidth (%d)\n")
+			call pargs (Mems[ip+1])
+		default:
+		    call printf ("unknown instruction\n")
+		}
+
+		ip = ip + SGK_LENMCI
+	    }
+
+	    call close (fd)
+	}
+
+	call clpcls (list)
+	call sfree (sp)
+end
-- 
cgit