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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2024 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU Lesser General Public License, as published by the Free Software
* Foundation; either version 2.1 of the License, or (at your option) any
* later version. Please see the file LICENSE-LGPL for details.
*
* Web Page: http://brltty.app/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include "log.h"
#include "lock.h"
#include "file.h"
#include "atb.h"
#include "atb_internal.h"
static const unsigned char internalAttributesTableBytes[] = {
#include "atb.auto.h"
};
static AttributesTable internalAttributesTable = {
.header.bytes = internalAttributesTableBytes,
.size = 0
};
AttributesTable *attributesTable = &internalAttributesTable;
static LockDescriptor *
getAttributesTableLock (void) {
static LockDescriptor *lock = NULL;
return getLockDescriptor(&lock, "attributes-table");
}
void
lockAttributesTable (void) {
obtainExclusiveLock(getAttributesTableLock());
}
void
unlockAttributesTable (void) {
releaseLock(getAttributesTableLock());
}
unsigned char
convertAttributesToDots (AttributesTable *table, unsigned char attributes) {
return table->header.fields->attributesToDots[attributes];
}
int
replaceAttributesTable (const char *directory, const char *name) {
AttributesTable *newTable = NULL;
if (*name) {
char *path;
if ((path = makeAttributesTablePath(directory, name))) {
logMessage(LOG_DEBUG, "compiling attributes table: %s", path);
if (!(newTable = compileAttributesTable(path))) {
logMessage(LOG_ERR, "%s: %s", gettext("cannot compile attributes table"), path);
}
free(path);
}
} else {
newTable = &internalAttributesTable;
}
if (newTable) {
AttributesTable *oldTable = attributesTable;
lockAttributesTable();
attributesTable = newTable;
unlockAttributesTable();
destroyAttributesTable(oldTable);
return 1;
}
logMessage(LOG_ERR, "%s: %s", gettext("cannot load attributes table"), name);
return 0;
}
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