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authorjaortega <jaortega>2001-03-01 23:58:01 +0000
committerjaortega <jaortega>2001-03-01 23:58:01 +0000
commitbcfdf63cda901a90b2438274385ada935b7812f0 (patch)
tree63fa3641f372ef66e2c543afbc26e3ef1da0ef9c /mixlib/xmix_device.c
parent3cd180b262db4490f811aaa2f19ef7a4d00ce24f (diff)
downloadmdk-bcfdf63cda901a90b2438274385ada935b7812f0.tar.gz
mdk-bcfdf63cda901a90b2438274385ada935b7812f0.tar.bz2
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Diffstat (limited to 'mixlib/xmix_device.c')
-rw-r--r--mixlib/xmix_device.c131
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diff --git a/mixlib/xmix_device.c b/mixlib/xmix_device.c
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+/* -*-c-*- -------------- xmix_device.c :
+ * Implementation of the functions declared in xmix_device.h
+ * ------------------------------------------------------------------
+ * Last change: Time-stamp: "01/03/02 00:27:37 jose"
+ * ------------------------------------------------------------------
+ * Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+
+#include "xmix_device.h"
+
+const char *DEV_EXT_ = ".dev";
+
+const char *DEF_NAMES_[] = {
+ "tape0", "tape1", "tape2", "tape3", "tape4", "tape5", "tape6", "tape7",
+ "disk0", "disk1", "disk2", "disk3", "disk4", "disk5", "disk6", "disk7",
+ "cardrd", "cardwr", "printer", "console", "paper"
+};
+
+const size_t SIZES_[] = {
+ 100, 100, 100, 100, 100, 100, 100, 100,
+ 100, 100, 100, 100, 100, 100, 100, 100,
+ 16, 16, 24, 14, 14
+};
+
+const mix_device_mode_t MODES_[] = {
+ mix_dev_BIN, mix_dev_BIN, mix_dev_BIN, mix_dev_BIN, mix_dev_BIN,
+ mix_dev_BIN, mix_dev_BIN, mix_dev_BIN, mix_dev_BIN, mix_dev_BIN,
+ mix_dev_BIN, mix_dev_BIN, mix_dev_BIN, mix_dev_BIN, mix_dev_BIN,
+ mix_dev_BIN, mix_dev_CHAR, mix_dev_CHAR, mix_dev_CHAR, mix_dev_CHAR,
+ mix_dev_CHAR
+};
+
+const mix_fmode_t FMODES_[] = {
+ mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT,
+ mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT,
+ mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT,
+ mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT, mix_io_RDWRT,
+ mix_io_READ, mix_io_WRITE, mix_io_WRITE, mix_io_RDWRT, mix_io_WRITE
+};
+
+/*
+ Write a block to the device.
+*/
+static gboolean
+write_ (mix_device_t *dev, const mix_word_t *block)
+{
+ gboolean result;
+
+ if (FMODES_[dev->type] == mix_io_READ) return FALSE;
+ if (MODES_[dev->type] == mix_dev_CHAR)
+ result = mix_io_write_word_array_as_char (GET_CHANNEL_ (dev),
+ block, SIZES_[dev->type]);
+ else
+ result = mix_io_write_word_array (GET_CHANNEL_ (dev),
+ block, SIZES_[dev->type]);
+ if (result && mix_device_mode(dev) == mix_dev_CHAR)
+ putc ('\n', mix_io_to_FILE (GET_CHANNEL_ (dev)));
+
+ fflush (mix_io_to_FILE (GET_CHANNEL_ (dev)));
+
+ return result;
+}
+
+static gboolean
+read_ (mix_device_t *dev, mix_word_t *block)
+{
+ if (FMODES_[dev->type] == mix_io_WRITE) return FALSE;
+ if (MODES_[dev->type] == mix_dev_CHAR)
+ return mix_io_read_word_array_as_char (GET_CHANNEL_ (dev),
+ block, SIZES_[dev->type]);
+ else
+ return mix_io_read_word_array (GET_CHANNEL_ (dev),
+ block, SIZES_[dev->type]);
+}
+
+static gboolean
+ioc_ (mix_device_t *dev, mix_short_t arg)
+{
+ int m;
+ FILE *file;
+
+ m = mix_short_magnitude(arg);
+ if (mix_short_is_negative(arg)) m = -m;
+ m *= sizeof (mix_word_t) * SIZES_[dev->type];
+ file = mix_io_to_FILE (GET_CHANNEL_(dev));
+
+ if (dev->type >= mix_dev_TAPE_0 && dev->type <= mix_dev_TAPE_7)
+ {
+ if (m == 0) rewind (file);
+ else fseek (file, m, SEEK_CUR);
+ }
+ if (dev->type >= mix_dev_DISK_0 && dev->type <= mix_dev_DISK_7)
+ {
+ g_return_val_if_fail (m == 0, FALSE);
+ // position disk
+ }
+ if (dev->type == mix_dev_PAPER_TAPE)
+ {
+ g_return_val_if_fail (m == 0, FALSE);
+ rewind (file);
+ }
+ return TRUE;
+}
+
+static gboolean
+busy_ (const mix_device_t *dev)
+{
+ return (!mix_io_is_ready (GET_CHANNEL_(dev)));
+}
+
+static mix_device_vtable_t VTABLE_ = {
+ write_, read_, ioc_, busy_
+};
+
+const mix_device_vtable_t * DEF_DEV_VTABLE_ = &VTABLE_;