1 files changed, 64 insertions, 0 deletions
diff --git a/src/common/NSError+Tikzit.m b/src/common/NSError+Tikzit.m
new file mode 100644
index 0000000..6b9404b
--- /dev/null
+++ b/src/common/NSError+Tikzit.m
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2011  Alex Merry <alex.merry@kdemail.net>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "NSError+Tikzit.h"
+
+NSString* const TZErrorDomain = @"tikzit";
+
+NSString* const TZToolOutputErrorKey = @"tool-output";
+
+@implementation NSError(Tikzit)
++ (NSString*)tikzitErrorDomain {
+    return TZErrorDomain;
+}
+
++ (id) errorWithMessage:(NSString*)message code:(NSInteger)code cause:(NSError*)cause {
+    NSMutableDictionary *errorDetail = [NSMutableDictionary dictionaryWithCapacity:2];
+    [errorDetail setValue:message forKey:NSLocalizedDescriptionKey];
+    if (cause)
+		[errorDetail setValue:cause forKey:NSUnderlyingErrorKey];
+    return [self errorWithDomain:TZErrorDomain code:code userInfo:errorDetail];
+}
+
++ (id) errorWithMessage:(NSString*)message code:(NSInteger)code {
+    NSMutableDictionary *errorDetail = [NSMutableDictionary dictionaryWithObject:message
+																		  forKey:NSLocalizedDescriptionKey];
+    return [self errorWithDomain:TZErrorDomain code:code userInfo:errorDetail];
+}
+
++ (id) errorWithLibcError:(NSInteger)errnum {
+    NSString *message = [NSString stringWithUTF8String:strerror(errnum)];
+    NSMutableDictionary *errorDetail = [NSMutableDictionary dictionaryWithObject:message
+																		  forKey:NSLocalizedDescriptionKey];
+    return [self errorWithDomain:NSPOSIXErrorDomain code:errnum userInfo:errorDetail];
+}
+
+- (NSString*)toolOutput {
+    return [[self userInfo] objectForKey:TZToolOutputErrorKey];
+}
+
+@end
+
+void logError (NSError *error, NSString *message) {
+    if (message == nil) {
+		NSLog (@"%@", [error localizedDescription]);
+    } else {
+		NSLog (@"%@: %@", message, [error localizedDescription]);
+    }
+}
+
+// vi:ft=objc:ts=4:noet:sts=4:sw=4