From a6c17dfdaa46f413ee8aee6d39904eb89454f813 Mon Sep 17 00:00:00 2001
From: stuconnolly <stuart02@gmail.com>
Date: Tue, 9 Dec 2008 00:08:35 +0000
Subject: - Partial fix for issue #109 by making the option to 'Autodetect'
 character encoding specific to each table - Added the selected table's
 character encoding to the table information pane and removed the table's name

---
 TableDocument.m | 45 ++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 38 insertions(+), 7 deletions(-)

(limited to 'TableDocument.m')

diff --git a/TableDocument.m b/TableDocument.m
index e88a62ad..8ca7b0ae 100644
--- a/TableDocument.m
+++ b/TableDocument.m
@@ -182,7 +182,7 @@ NSString *TableDocumentFavoritesControllerFavoritesDidChange = @"TableDocumentFa
 		// set encoding
 		NSString *encodingName = [prefs objectForKey:@"encoding"];
 		if ( [encodingName isEqualToString:@"Autodetect"] ) {
-			[self detectEncoding];
+			[self detectDatabaseEncoding];
 		} else {
 			[self setEncoding:[self mysqlEncodingFromDisplayEncoding:encodingName]];
 		}
@@ -632,14 +632,15 @@ NSString *TableDocumentFavoritesControllerFavoritesDidChange = @"TableDocumentFa
 {
 	// set encoding of connection and client
 	[mySQLConnection queryString:[NSString stringWithFormat:@"SET NAMES '%@'", mysqlEncoding]];
+	
 	if ( [[mySQLConnection getLastErrorMessage] isEqualToString:@""] ) {
 		[mySQLConnection setEncoding:[CMMCPConnection encodingForMySQLEncoding:[mysqlEncoding UTF8String]]];
 		[_encoding autorelease];
 		_encoding = [mysqlEncoding retain];
 	} else {
-		[self detectEncoding];
+		[self detectDatabaseEncoding];
 	}
-	
+		
 	// update the selected menu item
 	[self updateEncodingMenuWithSelectedEncoding:[self encodingNameFromMySQLEncoding:mysqlEncoding]];
 	
@@ -742,9 +743,9 @@ NSString *TableDocumentFavoritesControllerFavoritesDidChange = @"TableDocumentFa
 /**
  * Autodetect the connection encoding and select the relevant encoding menu item in Database -> Database Encoding
  */
-- (void)detectEncoding
+- (void)detectDatabaseEncoding
 {
-	// mysql > 4.0
+	// MySQL > 4.0
 	id mysqlEncoding = [[[mySQLConnection queryString:@"SHOW VARIABLES LIKE 'character_set_connection'"] fetchRowAsDictionary] objectForKey:@"Value"];
 	_supportsEncoding = (mysqlEncoding != nil);
 	
@@ -755,9 +756,10 @@ NSString *TableDocumentFavoritesControllerFavoritesDidChange = @"TableDocumentFa
 		mysqlEncoding = [[[mySQLConnection queryString:@"SHOW VARIABLES LIKE 'character_set'"] fetchRowAsDictionary] objectForKey:@"Value"];
 	}
 	if ( !mysqlEncoding ) { // older version? -> set encoding to mysql default encoding latin1
-		NSLog(@"error: no character encoding found, mysql version is %@", [self mySQLVersion]);
+		NSLog(@"Error: no character encoding found, mysql version is %@", [self mySQLVersion]);
 		mysqlEncoding = @"latin1";
 	}
+	
 	[mySQLConnection setEncoding:[CMMCPConnection encodingForMySQLEncoding:[mysqlEncoding cString]]];
 	
 	// save the encoding
@@ -769,7 +771,36 @@ NSString *TableDocumentFavoritesControllerFavoritesDidChange = @"TableDocumentFa
 }
 
 /**
- * when sent by an NSMenuItem, will set the encoding based on the title of the menu item
+ * Detects and sets the character set encoding of the supplied table name.
+ */
+- (void)detectTableEncodingForTable:(NSString *)table;
+{
+	NSString *tableCollation = [[[mySQLConnection queryString:[NSString stringWithFormat:@"SHOW TABLE STATUS WHERE NAME = '%@'", table]] fetchRowAsDictionary] objectForKey:@"Collation"];
+
+	if (tableCollation != nil) {
+		// Split up the collation string so we can get the encoding
+		NSArray *encodingComponents = [tableCollation componentsSeparatedByString:@"_"];
+		
+		if ([encodingComponents count] > 0) {
+			NSString *tableEncoding = [encodingComponents objectAtIndex:0];
+			
+			[mySQLConnection setEncoding:[CMMCPConnection encodingForMySQLEncoding:[tableEncoding UTF8String]]];
+			
+			// Save the encoding
+			[_encoding autorelease];
+			_encoding = [tableEncoding retain];
+			
+			// update the selected menu item
+			[self updateEncodingMenuWithSelectedEncoding:[self encodingNameFromMySQLEncoding:tableEncoding]];
+		}
+	}
+	else {
+		NSLog(@"Error: unable to determine table collation and thus character encoding for table '%@'", table);
+	}
+}
+
+/**
+ * When sent by an NSMenuItem, will set the encoding based on the title of the menu item
  */
 - (IBAction)chooseEncoding:(id)sender
 {
-- 
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