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SPTextView.m
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SPTextView.m
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//
// SPTextView.m
// sequel-pro
//
// Created by Carsten Blüm.
// Copyright (c) 2012 Sequel Pro Team. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//
// More info at <https://github.com/sequelpro/sequelpro>
#import "SPTextView.h"
#import "SPCustomQuery.h"
#import "SPDatabaseDocument.h"
#import "SPNarrowDownCompletion.h"
#import "SPQueryController.h"
#import "SPTooltip.h"
#import "SPTablesList.h"
#import "SPNavigatorController.h"
#import "SPAlertSheets.h"
#import "RegexKitLite.h"
#ifndef SP_CODA /* headers */
#import "SPBundleHTMLOutputController.h"
#endif
#ifndef SP_CODA /* headers */
#import "SPAppController.h"
#endif
#import "SPDatabaseStructure.h"
#import "SPBundleCommandRunner.h"
#import "NoodleLineNumberView.h"
#import "SPCopyTable.h"
#import "SPEditorTokens.h"
#import "SPSyntaxParser.h"
#import "SPHelpViewerClient.h"
#import <SPMySQL/SPMySQL.h>
#pragma mark -
#pragma mark attribute definition
#define kAPlinked @"Linked" // attribute for a via auto-pair inserted char
#define kAPval @"linked"
#define kLEXToken @"Quoted" // set via lex to indicate a quoted string
#define kLEXTokenValue @"isMarked"
#define kSQLkeyword @"s" // attribute for found SQL keywords
#define kQuote @"Quote"
#define kQuoteValue @"isQuoted"
#define kValue @"x"
#define kBTQuote @"BTQuote"
#define kBTQuoteValue @"isBTQuoted"
#pragma mark -
#pragma mark Constant definitions
#define SP_CQ_SEARCH_IN_MYSQL_HELP_MENU_ITEM_TAG 1000
#define SP_CQ_COPY_AS_RTF_MENU_ITEM_TAG 1001
#define SP_CQ_SELECT_CURRENT_QUERY_MENU_ITEM_TAG 1002
#define SP_SYNTAX_HILITE_BIAS 2000
#define SP_MAX_TEXT_SIZE_FOR_SYNTAX_HIGHLIGHTING 20000000
#pragma mark -
@interface SPTextView ()
NSInteger _alphabeticSort(id string1, id string2, void *reverse);
#ifndef SP_CODA
- (void)_setTextSelectionColor:(NSColor *)newSelectionColor;
- (void)_setTextSelectionColor:(NSColor *)newSelectionColor onBackgroundColor:(NSColor *)aBackgroundColor;
#endif
- (void)_positionCompletionPopup:(SPNarrowDownCompletion *)aPopup relativeToTextAtLocation:(NSUInteger)aLocation;
@end
// some helper functions for handling rectangles and points
// needed in roundedBezierPathAroundRange:
static inline CGFloat SPRectTop(NSRect rectangle) { return rectangle.origin.y; }
static inline CGFloat SPRectBottom(NSRect rectangle) { return rectangle.origin.y+rectangle.size.height; }
static inline CGFloat SPRectLeft(NSRect rectangle) { return rectangle.origin.x; }
static inline CGFloat SPRectRight(NSRect rectangle) { return rectangle.origin.x+rectangle.size.width; }
static inline CGFloat SPPointDistance(NSPoint a, NSPoint b) { return sqrtf( (a.x-b.x)*(a.x-b.x) + (a.y-b.y)*(a.y-b.y) ); }
static inline NSPoint SPPointOnLine(NSPoint a, NSPoint b, CGFloat t) { return NSMakePoint(a.x*(1.0f-t) + b.x*t, a.y*(1.0f-t) + b.y*t); }
@implementation SPTextView
@synthesize queryHiliteColor;
@synthesize queryEditorBackgroundColor;
@synthesize commentColor;
@synthesize quoteColor;
@synthesize keywordColor;
@synthesize backtickColor;
@synthesize numericColor;
@synthesize variableColor;
@synthesize otherTextColor;
@synthesize queryRange;
@synthesize shouldHiliteQuery;
@synthesize completionIsOpen;
@synthesize completionWasReinvokedAutomatically;
#ifdef SP_CODA
@synthesize tableDocumentInstance;
@synthesize tablesListInstance;
@synthesize customQueryInstance;
@synthesize mySQLConnection;
#endif
- (void) awakeFromNib
{
#ifndef SP_CODA /* init ivars */
prefs = [[NSUserDefaults standardUserDefaults] retain];
[self setFont:[NSUnarchiver unarchiveObjectWithData:[prefs dataForKey:SPCustomQueryEditorFont]]];
#endif
// Set self as delegate for the textView's textStorage to enable syntax highlighting,
[[self textStorage] setDelegate:self];
// Set defaults for general usage
autoindentEnabled = NO;
autopairEnabled = YES;
autoindentIgnoresEnter = NO;
autouppercaseKeywordsEnabled = NO;
#ifndef SP_CODA
autohelpEnabled = NO;
#endif
delBackwardsWasPressed = NO;
startListeningToBoundChanges = NO;
textBufferSizeIncreased = NO;
snippetControlCounter = -1;
mirroredCounter = -1;
completionPopup = nil;
completionIsOpen = NO;
isProcessingMirroredSnippets = NO;
completionWasRefreshed = NO;
lineNumberView = [[NoodleLineNumberView alloc] initWithScrollView:scrollView];
[scrollView setVerticalRulerView:lineNumberView];
[scrollView setHasHorizontalRuler:NO];
[scrollView setHasVerticalRuler:YES];
[scrollView setRulersVisible:YES];
[self setAllowsDocumentBackgroundColorChange:YES];
[self setContinuousSpellCheckingEnabled:NO];
#ifndef SP_CODA
[self setAutoindent:[prefs boolForKey:SPCustomQueryAutoIndent]];
#else
[self setAutoindent:YES];
#endif
[self setAutoindentIgnoresEnter:YES];
#ifndef SP_CODA
[self setAutopair:[prefs boolForKey:SPCustomQueryAutoPairCharacters]];
[self setAutohelp:[prefs boolForKey:SPCustomQueryUpdateAutoHelp]];
[self setAutouppercaseKeywords:[prefs boolForKey:SPCustomQueryAutoUppercaseKeywords]];
#else
[self setAutopair:YES];
//[self setAutouppercaseKeywords:YES]; // #18925
#endif
[self setCompletionWasReinvokedAutomatically:NO];
// Re-define tab stops for a better editing
[self setTabStops];
// disabled to get the current text range in textView safer
[[self layoutManager] setBackgroundLayoutEnabled:NO];
// add NSViewBoundsDidChangeNotification to scrollView
[scrollView setPostsBoundsChangedNotifications:YES];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(boundsDidChangeNotification:) name:NSViewBoundsDidChangeNotification object:[scrollView contentView]];
#ifndef SP_CODA
{
struct csItem {
NSString *p;
SEL m;
} colorSetup[] = {
{ .p = SPCustomQueryEditorHighlightQueryColor, .m = @selector(setQueryHiliteColor:) },
{ .p = SPCustomQueryEditorBackgroundColor, .m = @selector(setQueryEditorBackgroundColor:) },
{ .p = SPCustomQueryEditorBackgroundColor, .m = @selector(setBackgroundColor:) },
{ .p = SPCustomQueryEditorCommentColor, .m = @selector(setCommentColor:) },
{ .p = SPCustomQueryEditorQuoteColor, .m = @selector(setQuoteColor:) },
{ .p = SPCustomQueryEditorSQLKeywordColor, .m = @selector(setKeywordColor:) },
{ .p = SPCustomQueryEditorBacktickColor, .m = @selector(setBacktickColor:) },
{ .p = SPCustomQueryEditorNumericColor, .m = @selector(setNumericColor:) },
{ .p = SPCustomQueryEditorVariableColor, .m = @selector(setVariableColor:) },
{ .p = SPCustomQueryEditorTextColor, .m = @selector(setOtherTextColor:) },
{ .p = SPCustomQueryEditorTextColor, .m = @selector(setTextColor:) },
{ .p = SPCustomQueryEditorCaretColor, .m = @selector(setInsertionPointColor:) },
{ .p = SPCustomQueryEditorSelectionColor, .m = @selector(_setTextSelectionColor:) },
{ .p = nil, .m = NULL } // stop key
};
struct csItem *item = &colorSetup[0];
NSDictionary *vendorDefaults = [prefs volatileDomainForName:NSRegistrationDomain]; //prefs from -registerDefaults: in app controller
do {
NSData *colorData = [prefs dataForKey:item->p];
NSColor *color;
BOOL canRetry = YES;
retry:
if(colorData && (color = [NSUnarchiver unarchiveObjectWithData:colorData])) {
[self performSelector:item->m withObject:color];
}
else if(canRetry) {
// #2963: previous versions of SP would accept invalid data (resulting in `nil`) and store it in prefs,
// so if loading failed use the default color instead (`nil` would cause exceptions later on)
colorData = [vendorDefaults objectForKey:item->p];
canRetry = NO;
SPLog(@"user defaults contains invalid value for theme color '%@'! (retrying with default value)", item->p);
goto retry;
}
} while((++item)->p);
}
[self setShouldHiliteQuery:[prefs boolForKey:SPCustomQueryHighlightCurrentQuery]];
[self setAutomaticDashSubstitutionEnabled:NO]; // prevents -- from becoming —, the em dash.
[self setAutomaticQuoteSubstitutionEnabled:NO]; // prevents ' and " from becoming ‘, ’ and “, ” respectively.
// Register observers for the when editor colors preference changes
[prefs addObserver:self forKeyPath:SPCustomQueryEditorSelectionColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorCaretColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorFont options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorBackgroundColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorHighlightQueryColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryHighlightCurrentQuery options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorCommentColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorQuoteColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorSQLKeywordColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorBacktickColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorNumericColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorVariableColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorTextColor options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryEditorTabStopWidth options:NSKeyValueObservingOptionNew context:NULL];
[prefs addObserver:self forKeyPath:SPCustomQueryAutoUppercaseKeywords options:NSKeyValueObservingOptionNew context:NULL];
#else
[self setQueryHiliteColor:[NSColor whiteColor]];
[self setQueryEditorBackgroundColor:[NSColor whiteColor]];
[self setCommentColor:[NSColor darkGrayColor]];
[self setQuoteColor:[NSColor blueColor]];
[self setKeywordColor:[NSColor redColor]];
[self setBacktickColor:[NSColor purpleColor]];
[self setNumericColor:[NSColor blueColor]];
[self setVariableColor:[NSColor yellowColor]];
[self setOtherTextColor:[NSColor blackColor]];
[self setTextColor:otherTextColor];
[self setInsertionPointColor:[NSColor blackColor]];
[self setShouldHiliteQuery:YES];
[self setSelectedTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[NSColor lightGrayColor], NSBackgroundColorAttributeName, nil]];
#endif
}
- (void) setConnection:(SPMySQLConnection *)theConnection withVersion:(NSInteger)majorVersion
{
mySQLConnection = theConnection;
mySQLmajorVersion = majorVersion;
}
/**
* This method is called as part of Key Value Observing which is used to watch for prefernce changes which effect the interface.
*/
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
#ifndef SP_CODA
if ([keyPath isEqualToString:SPCustomQueryEditorBackgroundColor]) {
NSColor *backgroundColor = [NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]];
[self setQueryEditorBackgroundColor:backgroundColor];
[self setBackgroundColor:backgroundColor];
[self _setTextSelectionColor:[NSUnarchiver unarchiveObjectWithData:[prefs dataForKey:SPCustomQueryEditorSelectionColor]] onBackgroundColor:backgroundColor];
[self setNeedsDisplayInRect:[self bounds]];
} else if ([keyPath isEqualToString:SPCustomQueryEditorFont]) {
[self setFont:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
[self setNeedsDisplayInRect:[self bounds]];
} else if ([keyPath isEqualToString:SPCustomQueryEditorHighlightQueryColor]) {
[self setQueryHiliteColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
[self setNeedsDisplayInRect:[self bounds]];
} else if ([keyPath isEqualToString:SPCustomQueryEditorCaretColor]) {
[self setInsertionPointColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
[self setNeedsDisplayInRect:[self bounds]];
} else if ([keyPath isEqualToString:SPCustomQueryEditorSelectionColor]) {
[self _setTextSelectionColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]] onBackgroundColor:[NSUnarchiver unarchiveObjectWithData:[prefs dataForKey:SPCustomQueryEditorBackgroundColor]]];
[self setNeedsDisplayInRect:[self bounds]];
} else if ([keyPath isEqualToString:SPCustomQueryHighlightCurrentQuery]) {
[self setShouldHiliteQuery:[[change objectForKey:NSKeyValueChangeNewKey] boolValue]];
[self setNeedsDisplayInRect:[self bounds]];
} else if ([keyPath isEqualToString:SPCustomQueryEditorCommentColor]) {
[self setCommentColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorQuoteColor]) {
[self setQuoteColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorSQLKeywordColor]) {
[self setKeywordColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorBacktickColor]) {
[self setBacktickColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorNumericColor]) {
[self setNumericColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorVariableColor]) {
[self setVariableColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorTextColor]) {
[self setOtherTextColor:[NSUnarchiver unarchiveObjectWithData:[change objectForKey:NSKeyValueChangeNewKey]]];
[self setTextColor:[self otherTextColor]];
if([[self string] length]<100000 && [self isEditable])
[self performSelector:@selector(doSyntaxHighlighting) withObject:nil afterDelay:0.1];
} else if ([keyPath isEqualToString:SPCustomQueryEditorTabStopWidth]) {
[self setTabStops];
} else if ([keyPath isEqualToString:SPCustomQueryAutoUppercaseKeywords]) {
[self setAutouppercaseKeywords:[prefs boolForKey:SPCustomQueryAutoUppercaseKeywords]];
}
#endif
}
/**
* Return an array of NSDictionary containing the sorted strings representing
* the set of unique words, SQL keywords, user-defined funcs/procs, tables etc.
* NSDic key "display" := the displayed and to be inserted word
* NSDic key "image" := an image to be shown left from "display" (optional)
*
* [NSDictionary dictionaryWithObjectsAndKeys:@"foo", @"display", @"`foo`", @"match", @"func-small", @"image", nil]
*/
- (NSArray *)suggestionsForSQLCompletionWith:(NSString *)currentWord dictMode:(BOOL)isDictMode browseMode:(BOOL)dbBrowseMode withTableName:(NSString*)aTableName withDbName:(NSString*)aDbName
{
NSMutableArray *possibleCompletions = [[NSMutableArray alloc] initWithCapacity:32];
if(currentWord == nil) currentWord = @"";
// If caret is not inside backticks add keywords and all words coming from the view.
if(!dbBrowseMode)
{
// Only parse for words if text size is less than 1MB
if([[self string] length] && [[self string] length]<1000000)
{
NSMutableSet *uniqueArray = [NSMutableSet setWithCapacity:5];
for(id w in [[self textStorage] words])
if([[w string] hasPrefix:currentWord])
[uniqueArray addObject:[w string]];
// Remove current word from list
[uniqueArray removeObject:currentWord];
NSInteger reverseSort = NO;
for(id w in [[uniqueArray allObjects] sortedArrayUsingFunction:_alphabeticSort context:&reverseSort])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:w, @"display", @"dummy-small", @"image", nil]];
}
if(!isDictMode) {
// Add predefined keywords
NSArray *keywordList = [[NSArray arrayWithArray:[[SPQueryController sharedQueryController] keywordList]] retain];
for(id s in keywordList)
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:s, @"display", @"dummy-small", @"image", nil]];
// Add predefined functions
NSArray *functionList = [[NSArray arrayWithArray:[[SPQueryController sharedQueryController] functionList]] retain];
for(id s in functionList)
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:s, @"display", @"func-small", @"image", nil]];
[functionList release];
[keywordList release];
}
}
if(!isDictMode && [mySQLConnection isConnected])
{
// Add structural db/table/field data to completions list or fallback to gathering SPTablesList data
NSString* connectionID;
if(tableDocumentInstance)
connectionID = [tableDocumentInstance connectionID];
else
connectionID = @"_";
// Try to get structure data
NSDictionary *dbs = [NSDictionary dictionaryWithDictionary:[[SPNavigatorController sharedNavigatorController] dbStructureForConnection:connectionID]];
if(dbs != nil && [dbs isKindOfClass:[NSDictionary class]] && [dbs count]) {
NSMutableArray *allDbs = [NSMutableArray array];
[allDbs addObjectsFromArray:[dbs allKeys]];
NSSortDescriptor *desc = [[NSSortDescriptor alloc] initWithKey:nil ascending:YES selector:@selector(localizedCompare:)];
NSMutableArray *sortedDbs = [NSMutableArray array];
[sortedDbs addObjectsFromArray:[allDbs sortedArrayUsingDescriptors:@[desc]]];
NSString *currentDb = nil;
NSString *currentTable = nil;
if (tablesListInstance && [tablesListInstance selectedDatabase])
currentDb = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, [tablesListInstance selectedDatabase]];
if (tablesListInstance && [tablesListInstance tableName])
currentTable = [tablesListInstance tableName];
// Put current selected db at the top
if(aTableName == nil && aDbName == nil && [tablesListInstance selectedDatabase]) {
currentDb = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, [tablesListInstance selectedDatabase]];
[sortedDbs removeObject:currentDb];
[sortedDbs insertObject:currentDb atIndex:0];
}
NSString* aTableName_id;
NSString* aDbName_id = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, aDbName];
if(aDbName && aTableName)
aTableName_id = [NSString stringWithFormat:@"%@%@%@", aDbName_id, SPUniqueSchemaDelimiter, aTableName];
else
aTableName_id = [NSString stringWithFormat:@"%@%@%@", currentDb, SPUniqueSchemaDelimiter, aTableName];
// Put information_schema and/or mysql db at the end if not selected
// 5.5.3+ also has performance_schema
NSString* mysql_id = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, SPMySQLDatabase];
NSString* inf_id = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, SPMySQLInformationSchemaDatabase];
NSString* perf_id = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, SPMySQLPerformanceSchemaDatabase];
if(currentDb && ![currentDb isEqualToString:mysql_id] && [sortedDbs containsObject:mysql_id]) {
[sortedDbs removeObject:mysql_id];
[sortedDbs addObject:mysql_id];
}
if(currentDb && ![currentDb isEqualToString:inf_id] && [sortedDbs containsObject:inf_id]) {
[sortedDbs removeObject:inf_id];
[sortedDbs addObject:inf_id];
}
if(currentDb && ![currentDb isEqualToString:perf_id] && [sortedDbs containsObject:perf_id]) {
[sortedDbs removeObject:perf_id];
[sortedDbs addObject:perf_id];
}
BOOL aTableNameExists = NO;
if(!aDbName) {
// Try to suggest only items which are uniquely valid for the parsed string
NSArray *uniqueSchema = [[SPNavigatorController sharedNavigatorController] getUniqueDbIdentifierFor:[aTableName lowercaseString] andConnection:[[(NSObject*)[self delegate] valueForKeyPath:@"tableDocumentInstance"] connectionID] ignoreFields:YES];
NSInteger uniqueSchemaKind = [[uniqueSchema objectAtIndex:0] intValue];
// If no db name but table name check if table name is a valid name in the current selected db
if(uniqueSchemaKind == 2 && aTableName && [aTableName length]
&& [dbs objectForKey:currentDb] && [[dbs objectForKey:currentDb] isKindOfClass:[NSDictionary class]]
&& [[dbs objectForKey:currentDb] objectForKey:[NSString stringWithFormat:@"%@%@%@", currentDb, SPUniqueSchemaDelimiter, [uniqueSchema objectAtIndex:1]]] )
{
aTableNameExists = YES;
aTableName = [uniqueSchema objectAtIndex:1];
aTableName_id = [NSString stringWithFormat:@"%@%@%@", currentDb, SPUniqueSchemaDelimiter, aTableName];
aDbName_id = [NSString stringWithString:currentDb];
}
// If no db name but table name check if table name is a valid db name
if(uniqueSchemaKind == 1 && !aTableNameExists && aTableName && [aTableName length]) {
aDbName_id = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, [uniqueSchema objectAtIndex:1]];
aTableNameExists = NO;
}
} else if (aDbName && [aDbName length]) {
if(aTableName && [aTableName length]
&& [dbs objectForKey:aDbName_id] && [[dbs objectForKey:aDbName_id] isKindOfClass:[NSDictionary class]]
&& [[dbs objectForKey:aDbName_id] objectForKey:[NSString stringWithFormat:@"%@%@%@", aDbName_id, SPUniqueSchemaDelimiter, aTableName]]) {
aTableNameExists = YES;
}
}
// If aDbName exist show only those table
if([allDbs containsObject:aDbName_id]) {
[sortedDbs removeAllObjects];
[sortedDbs addObject:aDbName_id];
}
for(id db in sortedDbs) {
NSArray *allTables;
if([[dbs objectForKey:db] isKindOfClass:[NSDictionary class]])
allTables = [[dbs objectForKey:db] allKeys];
else {
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[[[[dbs objectForKey:db] description] componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display", @"database-small", @"image", @"", @"isRef", nil]];
continue;
}
NSMutableArray *sortedTables = [NSMutableArray array];
if(aTableNameExists) {
[sortedTables addObject:aTableName_id];
} else {
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[[db componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display", @"database-small", @"image", @"", @"isRef", nil]];
[sortedTables addObjectsFromArray:[allTables sortedArrayUsingDescriptors:@[desc]]];
if([sortedTables count] > 1 && [sortedTables containsObject:[NSString stringWithFormat:@"%@%@%@", db, SPUniqueSchemaDelimiter, currentTable]]) {
[sortedTables removeObject:[NSString stringWithFormat:@"%@%@%@", db, SPUniqueSchemaDelimiter, currentTable]];
[sortedTables insertObject:[NSString stringWithFormat:@"%@%@%@", db, SPUniqueSchemaDelimiter, currentTable] atIndex:0];
}
}
for(id table in sortedTables) {
NSDictionary *theTable = [[dbs objectForKey:db] objectForKey:table];
NSString *tablepath = [table substringFromIndex:[table rangeOfString:SPUniqueSchemaDelimiter].location];
NSArray *allFields = [theTable allKeys];
SPTableType structtype = (SPTableType)[[theTable objectForKey:@" struct_type "] intValue];
BOOL breakFlag = NO;
if(!aTableNameExists)
switch(structtype) {
case SPTableTypeTable:
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[[table componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display", @"table-small-square", @"image", tablepath, @"path", @"", @"isRef", nil]];
break;
case SPTableTypeView:
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[[table componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display", @"table-view-small-square", @"image", tablepath, @"path", @"", @"isRef", nil]];
break;
case SPTableTypeProc:
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[[table componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display", @"proc-small", @"image", tablepath, @"path", @"", @"isRef", nil]];
breakFlag = YES;
break;
case SPTableTypeFunc:
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:[[table componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display", @"func-small", @"image", tablepath, @"path", @"", @"isRef", nil]];
breakFlag = YES;
break;
}
if(!breakFlag) {
NSArray *sortedFields = [allFields sortedArrayUsingDescriptors:@[desc]];
for(id field in sortedFields) {
if(![field hasPrefix:@" "]) {
NSString *fieldpath = [field substringFromIndex:[field rangeOfString:SPUniqueSchemaDelimiter].location];
NSArray *def = [theTable objectForKey:field];
NSString *typ = [NSString stringWithFormat:@"%@ %@ %@", [def objectAtIndex:0], [def objectAtIndex:3], [def objectAtIndex:5]];
// Check if type definition contains a , if so replace the bracket content by … and add
// the bracket content as "list" key to prevend the token field to split them by ,
if(typ && [typ rangeOfString:@","].length) {
NSString *t = [typ stringByReplacingOccurrencesOfRegex:@"\\(.*?\\)" withString:@"(…)"];
NSString *lst = [typ stringByMatching:@"\\(([^\\)]*?)\\)" capture:1L];
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:
[[field componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display",
@"field-small-square", @"image",
fieldpath, @"path",
t, @"type",
lst, @"list",
@"", @"isRef",
nil]];
} else {
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:
[[field componentsSeparatedByString:SPUniqueSchemaDelimiter] lastObject], @"display",
@"field-small-square", @"image",
fieldpath, @"path",
typ, @"type",
@"", @"isRef",
nil]];
}
}
}
}
}
}
if(desc) [desc release];
} else {
// [possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:NSLocalizedString(@"fetching table data…", @"fetching table data for completion in progress message"), @"path", @"", @"noCompletion", nil]];
// Add all database names to completions list
for (id obj in [tablesListInstance allDatabaseNames])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"database-small", @"image", @"", @"isRef", nil]];
// Add all system database names to completions list
for (id obj in [tablesListInstance allSystemDatabaseNames])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"database-small", @"image", @"", @"isRef", nil]];
// Add table names to completions list
for (id obj in [tablesListInstance allTableNames])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"table-small-square", @"image", @"", @"isRef", nil]];
// Add view names to completions list
for (id obj in [tablesListInstance allViewNames])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"table-view-small-square", @"image", @"", @"isRef", nil]];
// Add field names to completions list for currently selected table
if ([tableDocumentInstance table] != nil)
for (id obj in [[tableDocumentInstance valueForKeyPath:@"tableDataInstance"] valueForKey:@"columnNames"])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"field-small-square", @"image", @"", @"isRef", nil]];
// Add proc/func only for MySQL version 5 or higher
if(mySQLmajorVersion > 4) {
// Add all procedures to completions list for currently selected table
for (id obj in [tablesListInstance allProcedureNames])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"proc-small", @"image", @"", @"isRef", nil]];
// Add all function to completions list for currently selected table
for (id obj in [tablesListInstance allFunctionNames])
[possibleCompletions addObject:[NSDictionary dictionaryWithObjectsAndKeys:obj, @"display", @"func-small", @"image", @"", @"isRef", nil]];
}
}
}
return [possibleCompletions autorelease];
}
- (void) doAutoCompletion
{
if(completionIsOpen || !self || ![self delegate]) return;
// Cancel autocompletion trigger
#ifndef SP_CODA
if([prefs boolForKey:SPCustomQueryAutoComplete])
#endif
[NSObject cancelPreviousPerformRequestsWithTarget:self
selector:@selector(doAutoCompletion)
object:nil];
NSRange r = [self selectedRange];
if(![self delegate] || ![[self delegate] isKindOfClass:[SPCustomQuery class]] || r.length || snippetControlCounter > -1) return;
if(r.location) {
NSCharacterSet *ignoreCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@"\"'`;,()[]{}=+/<> \t\n\r"];
// Check the previous character and don't autocomplete if the character is whitespace or certain types of punctuation
if ([ignoreCharacterSet characterIsMember:[[self string] characterAtIndex:r.location - 1]]) return;
// Suppress auto-completion if the window isn't active anymore
if ([[NSApp keyWindow] firstResponder] != self) return;
BOOL useSpellChecker = NO;
// Check if caret is inside a quote to auto-complete by using spellChecker
if([(NSString*)NSMutableAttributedStringAttributeAtIndex([self textStorage], kQuote, (r.location-1), nil) length])
useSpellChecker = YES;
// Trigger the completion
[self doCompletionByUsingSpellChecker:useSpellChecker fuzzyMode:NO autoCompleteMode:YES];
}
}
- (void) refreshCompletion
{
if(completionWasRefreshed) return;
completionWasRefreshed = YES;
[self doCompletionByUsingSpellChecker:NO fuzzyMode:completionFuzzyMode autoCompleteMode:NO];
}
- (void) doCompletionByUsingSpellChecker:(BOOL)isDictMode fuzzyMode:(BOOL)fuzzySearch autoCompleteMode:(BOOL)autoCompleteMode
{
// Cancel autocompletion trigger
#ifndef SP_CODA
if([prefs boolForKey:SPCustomQueryAutoComplete])
#endif
[NSObject cancelPreviousPerformRequestsWithTarget:self
selector:@selector(doAutoCompletion)
object:nil];
if(![self isEditable] || (completionIsOpen && !completionWasReinvokedAutomatically)) {
return;
}
[self breakUndoCoalescing];
// Remember state for refreshCompletion
completionFuzzyMode = fuzzySearch;
NSUInteger caretPos = NSMaxRange([self selectedRange]);
BOOL caretMovedLeft = NO;
// Check if caret is located after a ` - if so move caret inside
if(!autoCompleteMode && [[self string] length] && caretPos > 0 && [[self string] characterAtIndex:caretPos-1] == '`') {
if([[self string] length] > caretPos && [[self string] characterAtIndex:caretPos] == '`') {
;
} else {
caretPos--;
caretMovedLeft = YES;
[self setSelectedRange:NSMakeRange(caretPos, 0)];
}
}
NSString* filter;
NSString* dbName = nil;
NSString* tableName = nil;
NSRange completionRange = [self getRangeForCurrentWord];
NSRange parseRange = completionRange;
NSString* currentWord = [[self string] substringWithRange:completionRange];
NSString* prefix = @"";
NSString *currentDb = nil;
// Break for long stuff
if(completionRange.length>100000) return;
NSString* allow; // additional chars which won't close the suggestion list window
if(isDictMode)
allow= @"_";
else
allow= @"_. ";
BOOL dbBrowseMode = NO;
NSInteger backtickMode = 0; // 0 none, 1 rigth only, 2 left only, 3 both
BOOL caseInsensitive = YES;
// Remove that attribute to suppress auto-uppercasing of certain keyword combinations
if(![self selectedRange].length && [self selectedRange].location)
[[self textStorage] removeAttribute:kSQLkeyword range:completionRange];
[self setSelectedRange:NSMakeRange(caretPos, 0)];
if(!isDictMode) {
// Parse for leading db.table.field infos
if(tablesListInstance && [tablesListInstance selectedDatabase])
currentDb = [tablesListInstance selectedDatabase];
else
currentDb = @"";
BOOL caretIsInsideBackticks = NO;
// Is the caret inside backticks
// Do not using attribute:atIndex: since it could return wrong results due to editing.
// This approach counts the number of ` up to the beginning of the current line from caret position
NSRange lineHeadRange = [[self string] lineRangeForRange:NSMakeRange(caretPos, 0)];
NSString *lineHead = [[self string] substringWithRange:NSMakeRange(lineHeadRange.location, caretPos - lineHeadRange.location)];
for(NSUInteger i=0; i<[lineHead length]; i++)
if([lineHead characterAtIndex:i]=='`') caretIsInsideBackticks = !caretIsInsideBackticks;
NSMutableCharacterSet *breakCharSet = [NSMutableCharacterSet characterSetWithCharactersInString:@",;(+=-*/%><~&|^"];
[breakCharSet formUnionWithCharacterSet:[NSCharacterSet whitespaceCharacterSet]];
NSUInteger start = caretPos;
NSInteger backticksCounter = (caretIsInsideBackticks) ? 1 : 0;
NSInteger pointCounter = 0;
NSInteger firstPoint = 0;
NSInteger secondPoint = 0;
BOOL rightBacktick = NO;
BOOL leftBacktick = NO;
BOOL doParsing = YES;
unichar currentCharacter;
while(start > 0 && doParsing) {
currentCharacter = [[self string] characterAtIndex:--start];
if(!(backticksCounter%2) && [breakCharSet characterIsMember:currentCharacter]) {
start++;
break;
}
if(currentCharacter == '.' && !(backticksCounter%2)) {
pointCounter++;
switch(pointCounter) {
case 1:
firstPoint = start;
break;
case 2:
secondPoint = start;
break;
default:
doParsing = NO;
start++;
}
}
if(doParsing && currentCharacter == '`') {
backticksCounter++;
if(!(backticksCounter%2) && start > 0) {
currentCharacter = [[self string] characterAtIndex:start-1];
if(currentCharacter != '`' && currentCharacter != '.') break;
if(currentCharacter == '`') { // ignore ``
backticksCounter++;
start--;
}
}
}
}
dbBrowseMode = (pointCounter || backticksCounter);
if(dbBrowseMode) {
parseRange = NSMakeRange(start, caretPos-start);
// Break for long stuff
if(parseRange.length>100000) return;
NSString *parsedString = [[self string] substringWithRange:parseRange];
// Check if parsed string is wrapped by ``
if([parsedString hasPrefix:@"`"]) {
backtickMode+=1;
leftBacktick = YES;
}
if([[self string] length] > NSMaxRange(parseRange)) {
if([[self string] characterAtIndex:NSMaxRange(parseRange)] == '`') {
backtickMode+=2;
parseRange.length++; // adjust parse string for right `
rightBacktick = YES;
}
}
// Normalize point positions
firstPoint-=start;
secondPoint-=start;
if(secondPoint>0) {
dbName = [[[parsedString substringWithRange:NSMakeRange(0, secondPoint)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"] stringByReplacingOccurrencesOfRegex:@"^`|`$" withString:@""];
tableName = [[[parsedString substringWithRange:NSMakeRange(secondPoint+1,firstPoint-secondPoint-1)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"] stringByReplacingOccurrencesOfRegex:@"^`|`$" withString:@""];
filter = [[[parsedString substringWithRange:NSMakeRange(firstPoint+1,[parsedString length]-firstPoint-1)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"] stringByReplacingOccurrencesOfRegex:@"^`|`$" withString:@""];
} else if(firstPoint>0) {
tableName = [[[parsedString substringWithRange:NSMakeRange(0, firstPoint)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"] stringByReplacingOccurrencesOfRegex:@"^`|`$" withString:@""];
filter = [[[parsedString substringWithRange:NSMakeRange(firstPoint+1,[parsedString length]-firstPoint-1)] stringByReplacingOccurrencesOfString:@"``" withString:@"`"] stringByReplacingOccurrencesOfRegex:@"^`|`$" withString:@""];
} else {
filter = [[parsedString stringByReplacingOccurrencesOfString:@"``" withString:@"`"] stringByReplacingOccurrencesOfRegex:@"^`|`$" withString:@""];
}
// Adjust completion range
if(firstPoint>0) {
completionRange = NSMakeRange(firstPoint+1+start,[parsedString length]-firstPoint-1);
}
else if([filter length] && leftBacktick) {
completionRange = NSMakeRange(completionRange.location-1,completionRange.length+1);
}
if(rightBacktick)
completionRange.length++;
// Check leading . since .tableName == <currentDB>.tableName etc.
if([filter hasPrefix:@".`"]) {
filter = [filter substringFromIndex:2];
completionRange = NSMakeRange(completionRange.location-1,completionRange.length+1);
} else if([filter hasPrefix:@"."]) {
filter = [filter substringFromIndex:1];
} else if([tableName hasPrefix:@".`"]) {
tableName = [tableName substringFromIndex:2];
}
if(fuzzySearch) {
filter = [[NSString stringWithString:[[self string] substringWithRange:parseRange]] stringByReplacingOccurrencesOfString:@"`" withString:@""];
completionRange = parseRange;
}
} else {
filter = [NSString stringWithString:currentWord];
}
} else {
filter = [NSString stringWithString:currentWord];
}
// Cancel autocompletion trigger again if user typed something in while parsing
#ifndef SP_CODA
if([prefs boolForKey:SPCustomQueryAutoComplete])
#endif
[NSObject cancelPreviousPerformRequestsWithTarget:self
selector:@selector(doAutoCompletion)
object:nil];
// Check for table name aliases
NSString *alias = nil;
if(dbBrowseMode && tableDocumentInstance && customQueryInstance) {
NSString *theDb = (dbName == nil) ? [NSString stringWithString:currentDb] : [NSString stringWithString:dbName];
NSString *connectionID = [tableDocumentInstance connectionID];
NSString *conID = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, theDb];
NSDictionary *dbs = [NSDictionary dictionaryWithDictionary:[[[tableDocumentInstance databaseStructureRetrieval] structure] objectForKey:connectionID]];
if(theDb && dbs != nil && [dbs count] && [dbs objectForKey:conID] && [[dbs objectForKey:conID] isKindOfClass:[NSDictionary class]]) {
NSArray *allTables = [[dbs objectForKey:conID] allKeys];
// Check if found table name is known, if not parse for aliases
if(![allTables containsObject:[NSString stringWithFormat:@"%@%@%@", conID, SPUniqueSchemaDelimiter, tableName]]) {
NSString *currentQuery = [[self string] substringWithRange:[customQueryInstance currentQueryRange]];
NSString *re = [NSString stringWithFormat:@"(?i)[\\s,]`?(\\S+?)`?\\s+(AS\\s+)?`?%@`?\\b", tableName];
NSArray *matches = [currentQuery componentsMatchedByRegex:re];
for(NSString* m in matches) {
NSRange aliasRange = [m rangeOfRegex:re capture:1L];
if(aliasRange.length) {
alias = [[m substringWithRange:aliasRange] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
// If alias refers to db.table split and check it
if([alias rangeOfString:@"."].length) {
NSRange dbRange = [alias rangeOfRegex:@"^`?(.*?)`?\\." capture:1L];
NSRange tbRange = [alias rangeOfRegex:@"\\.`?(.*?)`?$" capture:1L];
NSString *db = [[alias substringWithRange:dbRange] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
NSString *tb = [[alias substringWithRange:tbRange] stringByReplacingOccurrencesOfString:@"``" withString:@"`"];
NSString *curConID = [NSString stringWithFormat:@"%@%@%@", connectionID, SPUniqueSchemaDelimiter, db];
if([dbs objectForKey:curConID] && [[dbs objectForKey:curConID] isKindOfClass:[NSDictionary class]]) {
allTables = [[dbs objectForKey:curConID] allKeys];
if([allTables containsObject:[NSString stringWithFormat:@"%@%@%@", curConID, SPUniqueSchemaDelimiter, tb]]) {
tableName = tb;
dbName = db;
break;
}
}
} else {
if([allTables containsObject:[NSString stringWithFormat:@"%@%@%@", conID, SPUniqueSchemaDelimiter, alias]]) {
tableName = alias;
break;
}
}
}
}
}
}
}
if (completionIsOpen) [completionPopup close], completionPopup = nil;
completionIsOpen = YES;
completionPopup = [[SPNarrowDownCompletion alloc] initWithItems:[self suggestionsForSQLCompletionWith:currentWord dictMode:isDictMode browseMode:dbBrowseMode withTableName:tableName withDbName:dbName]
alreadyTyped:filter
staticPrefix:prefix
additionalWordCharacters:allow
caseSensitive:!caseInsensitive
charRange:completionRange
parseRange:parseRange
inView:self
dictMode:isDictMode
tabTriggerMode:[self isSnippetMode]
fuzzySearch:fuzzySearch
backtickMode:backtickMode
selectedDb:currentDb
caretMovedLeft:caretMovedLeft
autoComplete:autoCompleteMode
oneColumn:isDictMode
alias:alias
withDBStructureRetriever:[tableDocumentInstance databaseStructureRetrieval]];
completionParseRangeLocation = parseRange.location;
[self _positionCompletionPopup:completionPopup relativeToTextAtLocation:completionRange.location];
[completionPopup orderFront:self];
[completionPopup insertAutocompletePlaceholder];
}
/**
* Returns the associated line number for a character position inside of the SPTextView
*/
- (NSUInteger) getLineNumberForCharacterIndex:(NSUInteger)anIndex
{
return [lineNumberView lineNumberForCharacterIndex:anIndex]+1;
}
/**
* Checks if the char after the current caret position/selection matches a supplied attribute
*/
- (BOOL) isNextCharMarkedBy:(id)attribute withValue:(id)aValue
{
NSUInteger caretPosition = [self selectedRange].location;
// Perform bounds checking
if (caretPosition >= [[self string] length]) return NO;
// Perform the check
if ([[[self textStorage] attribute:attribute atIndex:caretPosition effectiveRange:nil] isEqualToString:aValue])
return YES;
return NO;
}
/**
* Checks if the caret adjoins to an alphanumeric char |word or word| or wo|rd
* Exception for word| and char is a “(” to allow e.g. auto-pairing () for functions
*/
- (BOOL) isCaretAdjacentToAlphanumCharWithInsertionOf:(unichar)aChar
{
NSUInteger caretPosition = [self selectedRange].location;
NSCharacterSet *alphanum = [NSCharacterSet alphanumericCharacterSet];
BOOL leftIsAlphanum = NO;
BOOL rightIsAlphanum = NO;
BOOL charIsOpenBracket = (aChar == '(');
NSUInteger bufferLength = [[self string] length];
if(!bufferLength) return NO;
// Check previous/next character for being alphanum
// @try block for bounds checking
@try
{
if(caretPosition==0)
leftIsAlphanum = NO;
else
leftIsAlphanum = [alphanum characterIsMember:[[self string] characterAtIndex:caretPosition-1]] && !charIsOpenBracket;
} @catch(id ae) { }
@try {
if(caretPosition >= bufferLength)
rightIsAlphanum = NO;
else
rightIsAlphanum= [alphanum characterIsMember:[[self string] characterAtIndex:caretPosition]];
} @catch(id ae) { }
return (leftIsAlphanum ^ rightIsAlphanum || (leftIsAlphanum && rightIsAlphanum));