source: trunk/ICeCoffEE/ICeCoffEE/ICeCoffEE.m @ 79

Last change on this file since 79 was 79, checked in by Nicholas Riley, 17 years ago

ICeCoffEE 1.3b3

File size: 18.8 KB
Line 
1// ICeCoffEE - Internet Config Cocoa Editor Extension
2// Nicholas Riley <mailto:icecoffee@sabi.net>
3
4/* To do/think about:
5
6- Carbon contextual menu plugin which presents Services (yah!)
7  for both files and text
8- if it's not a URL, try using TextExtras' open list
9- TXNClick - MLTE has its own support in Jaguar and later, but it's lousy
10
11Done:
12
13- TEClick - TextEdit
14- flash on success (like BBEdit)
15- display dialog on failure (decode OSStatus)
16- adjust URL blinking
17- app exclusion list - make a pref pane (see AquaShade config)
18- _LSCopyApplicationURLsForItemURL - list apps
19- Menu on command-option-click: add bookmark, open with other helper, pass to configurable service, ...?
20
21*/
22
23#import "ICeCoffEE.h"
24#import <Carbon/Carbon.h>
25#include <unistd.h>
26#import "ICeCoffEESuper.h"
27#import "ICeCoffEEActionMenu.h"
28
29iccfPrefRec ICCF_prefs;
30
31NSString *ICCF_ErrString(OSStatus err, NSString *context) {   
32    if (err == noErr || err == userCanceledErr) return nil;
33
34    NSString *errNum = [NSString stringWithFormat: @"%ld", err];
35    NSString *errDesc = ICCF_LocalizedString(errNum);
36
37    if (errDesc == NULL || errDesc == errNum)
38        errDesc = [NSString stringWithFormat: ICCF_LocalizedString(@"An unknown error occurred in %@"), context];
39
40    return [NSString stringWithFormat: @"%@ (%d)", errDesc, (int)err];
41}
42
43CFStringRef ICCF_CopyErrString(OSStatus err, CFStringRef context) {
44    if (err == noErr || err == userCanceledErr) return NULL;
45
46    CFStringRef errNum = CFStringCreateWithFormat(NULL, NULL, CFSTR("%ld"), err);
47    CFStringRef errDesc = ICCF_CopyLocalizedString(errNum);
48
49    if (errDesc == NULL || errDesc == errNum) {
50        CFStringRef errDescFormat = ICCF_CopyLocalizedString(CFSTR("An unknown error occurred in %@"));
51        if (errDesc != NULL) CFRelease(errDesc);
52        errDesc = CFStringCreateWithFormat(NULL, NULL, errDescFormat, context);
53    }
54
55    CFStringRef errStr = CFStringCreateWithFormat(NULL, NULL, CFSTR("%@ (%d)"), errDesc, (int)err);
56
57    if (errNum != NULL) CFRelease(errNum);
58    if (errDesc != NULL) CFRelease(errDesc);
59    return errStr;
60}
61
62BOOL ICCF_EventIsCommandMouseDown(NSEvent *e) {
63    unsigned int modifierFlags = [e modifierFlags];
64    return ([e type] == NSLeftMouseDown &&
65            (modifierFlags == NSCommandKeyMask || modifierFlags == (NSCommandKeyMask | NSAlternateKeyMask))
66            && [e clickCount] == 1);
67}
68
69BOOL ICCF_OptionKeyIsDown() {
70    unsigned int modifierFlags = [[NSApp currentEvent] modifierFlags];
71    return (modifierFlags & NSAlternateKeyMask) != 0;
72}
73
74void ICCF_CheckRange(NSRange range) {
75    NSCAssert(range.length > 0, ICCF_LocalizedString(@"No URL is selected"));
76    NSCAssert1(range.length <= ICCF_MAX_URL_LEN, ICCF_LocalizedString(@"The potential URL is longer than %lu characters"), ICCF_MAX_URL_LEN);
77}
78
79void ICCF_Delimiters(NSCharacterSet **leftPtr, NSCharacterSet **rightPtr) {
80    static NSCharacterSet *urlLeftDelimiters = nil, *urlRightDelimiters = nil;
81
82    if (urlLeftDelimiters == nil || urlRightDelimiters == nil) {
83        NSMutableCharacterSet *set = [[NSCharacterSet whitespaceAndNewlineCharacterSet] mutableCopy];
84        NSMutableCharacterSet *tmpSet;
85        [urlLeftDelimiters release];
86        [urlRightDelimiters release];
87
88        [set autorelease];
89        [set formUnionWithCharacterSet: [NSCharacterSet punctuationCharacterSet]];
90        [set removeCharactersInString: @";/?:@&=+$,-_.!~*'()%#"]; // RFC 2396 ¤2.2, 2.3, 2.4, plus #
91
92        tmpSet = [[set mutableCopy] autorelease];
93        [tmpSet formUnionWithCharacterSet: [NSCharacterSet characterSetWithCharactersInString: @"><("]];
94        urlLeftDelimiters = [tmpSet copy]; // make immutable again - for efficiency
95
96        tmpSet = [[set mutableCopy] autorelease];
97        [tmpSet formUnionWithCharacterSet: [NSCharacterSet characterSetWithCharactersInString: @"><)"]];
98        urlRightDelimiters = [tmpSet copy]; // make immutable again - for efficiency
99    }
100
101    *leftPtr = urlLeftDelimiters; *rightPtr = urlRightDelimiters;
102}
103
104static ICInstance ICCF_icInst = NULL;
105
106void ICCF_StartIC() {
107    OSStatus err;
108   
109    if (ICCF_icInst != NULL) {
110        ICLog(@"ICCF_StartIC: Internet Config is already running!");
111        ICCF_StopIC();
112    }
113    err = ICStart(&ICCF_icInst, kICCFCreator);
114    NSCAssert1(err == noErr, ICCF_LocalizedString(@"Unable to start Internet Config (error %d)"), err);
115}
116
117void ICCF_StopIC() {
118    if (ICCF_icInst == NULL) {
119        ICLog(@"ICCF_StopIC: Internet Config is not running!");
120    } else {
121        ICStop(ICCF_icInst);
122        ICCF_icInst = NULL;
123    }
124}
125
126ICInstance ICCF_GetInst() {
127    NSCAssert(ICCF_icInst != NULL, @"Internal error: Called ICCF_GetInst without ICCF_StartIC");
128    return ICCF_icInst;
129}
130
131ConstStringPtr ICCF_GetHint(ICInstance inst, const char *urlData, Size length, long *selStart, long *selEnd, Boolean *needsSlashes) {
132    Handle h = NewHandle(0);
133    OSStatus err;
134
135    if (h == NULL) return NULL;
136
137    // parse the URL providing a bogus protocol, to get rid of escaped forms
138    err = ICParseURL(inst, "\p*", urlData, length, selStart, selEnd, h);
139    if (err != noErr) return NULL;
140
141    // scan through the parsed URL looking for characters not found in email addresses
142    Size hSize = GetHandleSize(h);
143    if (hSize == 0) return NULL;
144
145    const char *urlParsed = *h;
146    long i = 0;
147    Boolean sawAt = false;
148    if (hSize >= 2 && urlParsed[0] == '*' && urlParsed[1] == ':') {
149        // this is an IC-inserted protocol; skip over it
150        i = 2;
151        *needsSlashes = (hSize < i + 2 || urlParsed[i] != '/' || urlParsed[i + 1] != '/');
152    } else *needsSlashes = false;
153    for ( ; i < hSize ; i++) {
154        char c = urlParsed[i];
155        if (c == '@') {
156            sawAt = true;
157        } else if (!((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') ||
158                     (c == '+' || c == '-' || c == '_' || c == '!' || c == '.'))) {
159            DisposeHandle(h);
160            return "\phttp";
161        }
162    }
163    DisposeHandle(h);
164    if (sawAt) {
165        *needsSlashes = false;
166        return "\pmailto";
167    }
168    return "\phttp";
169}
170
171static const char *kICSlashes = "//";
172
173void ICCF_AddSlashes(Handle h, ConstStringPtr hint) {
174    Size sizeBefore = GetHandleSize(h);
175    unsigned char hintLength = StrLength(hint);
176    char *copy = (char *)malloc(sizeBefore);
177    memcpy(copy, *h, sizeBefore);
178    ICLog(@"ICCF_AddSlashes before: |%s|\n", *h);
179    ReallocateHandle(h, sizeBefore + 2);
180
181    // if *h begins with '<hint>:', then copy the slashes after it
182    if (sizeBefore > hintLength + 1 && strncmp(&hint[1], copy, hintLength) == 0 && copy[hintLength] == ':') {
183        memcpy(*h, copy, hintLength + 1);
184        memcpy(*h + hintLength + 1, kICSlashes, 2);
185        memcpy(*h + hintLength + 3, &copy[hintLength + 1], sizeBefore - hintLength - 1);
186    } else {
187        memcpy(*h, kICSlashes, 2);
188        memcpy(*h + 2, copy, sizeBefore);
189    }
190       
191    free(copy);
192    ICLog(@"ICCF_AddSlashes after: |%s|\n", *h);
193}
194
195void ICCF_ParseURL(NSString *string, NSRange *range) {
196    OSStatus err;
197    Handle h;
198    long selStart, selEnd;
199    char *urlData = NULL;
200
201    NSCAssert(range->length == [string length], @"Internal error: URL string is wrong length");
202   
203    NS_DURING
204        if ([[NSCharacterSet characterSetWithCharactersInString: @";,."] characterIsMember:
205            [string characterAtIndex: range->length - 1]]) {
206            range->length--;
207        }
208
209        string = [string substringToIndex: range->length];
210
211        ICLog(@"Parsing URL |%@|", string);
212
213        urlData = (char *)malloc( (range->length + 1) * sizeof(char));
214        NSCAssert(urlData != NULL, @"Internal error: canÕt allocate memory for URL string");
215
216        selStart = 0; selEnd = range->length;
217
218        [string getCString: urlData];
219
220        h = NewHandle(0);
221        NSCAssert(h != NULL, @"Internal error: canÕt allocate URL handle");
222
223        err = ICParseURL(ICCF_GetInst(), "\pmailto", urlData, range->length, &selStart, &selEnd, h);
224        DisposeHandle(h);
225
226        ICCF_OSErrCAssert(err, @"ICParseURL");
227   
228        range->length = selEnd - selStart;
229        range->location += selStart;
230    NS_HANDLER
231        free(urlData);
232        [localException raise];
233    NS_ENDHANDLER
234   
235    free(urlData);
236}
237
238void ICCF_LaunchURL(NSString *string, BOOL chooseApp) {
239    OSStatus err;
240    long selStart, selEnd;
241    unsigned len = [string length];
242
243    Handle h = NULL;
244   
245    NS_DURING
246        h = NewHandle(len);
247        if (h == NULL)
248            ICCF_OSErrCAssert(MemError(), @"NewHandle");
249
250        if (CFStringGetBytes((CFStringRef)string, CFRangeMake(0, len), kCFStringEncodingASCII, '\0', false, *h, len, NULL) != len)
251            ICCF_OSErrCAssert(kTECNoConversionPathErr, @"CFStringGetBytes");
252
253        selStart = 0; selEnd = len;
254
255        Boolean needsSlashes;
256        ConstStringPtr hint = ICCF_GetHint(ICCF_GetInst(), *h, len, &selStart, &selEnd, &needsSlashes);
257        NSCAssert(hint != NULL, @"Internal error: canÕt get protocol hint for URL");
258
259        if (needsSlashes) {
260            ICCF_AddSlashes(h, hint);
261            len = selEnd = GetHandleSize(h);
262        }
263
264        if (chooseApp) {
265            err = ICCF_DoURLActionMenu(ICCF_GetInst(), hint, *h, selStart, selEnd);
266            ICCF_OSErrCAssert(err, @"ICCF_DoURLActionMenu");
267        } else {
268            err = ICLaunchURL(ICCF_GetInst(), hint, *h, len, &selStart, &selEnd);
269            ICCF_OSErrCAssert(err, @"ICLaunchURL");
270        }
271       
272    NS_HANDLER
273        DisposeHandle(h);
274        [localException raise];
275    NS_ENDHANDLER
276
277    DisposeHandle(h);   
278}
279
280// XXX not sure what to do if there's already a selection; BBEdit and MLTE extend it, Tex-Edit Plus doesn't.
281// RFC-ordained max URL length, just to avoid passing IC multi-megabyte documents
282#if ICCF_DEBUG
283const long ICCF_MAX_URL_LEN = 1024; // XXX change later
284#else
285const long ICCF_MAX_URL_LEN = 1024;
286#endif
287
288Boolean ICCF_enabled = true;
289
290BOOL ICCF_HandleException(NSException *e) {
291    if ([e reason] == nil || [[e reason] length] == 0)
292        return NO;
293   
294    if (ICCF_prefs.errorSoundEnabled) NSBeep();
295    if (!ICCF_prefs.errorDialogEnabled) return YES;
296   
297    int result = NSRunAlertPanel(ICCF_LocalizedString(@"AlertTitle"), ICCF_LocalizedString(@"AlertMessage%@"), nil, nil, ICCF_LocalizedString(@"AlertDisableButton"), e);
298    if (result != NSAlertDefaultReturn) {
299        result = NSRunAlertPanel(ICCF_LocalizedString(@"DisableAlertTitle"), ICCF_LocalizedString(@"DisableAlertMessage"), ICCF_LocalizedString(@"DisableAlertDisableButton"), ICCF_LocalizedString(@"DisableAlertDontDisableButton"), nil);
300        if (result == NSAlertDefaultReturn)
301            ICCF_enabled = NO;
302    }
303    return YES;
304}
305
306void ICCF_LaunchURLFromTextView(NSTextView *self) {
307    NSCharacterSet *urlLeftDelimiters = nil, *urlRightDelimiters = nil;
308    NSRange range = [self selectedRange], delimiterRange;
309    NSColor *insertionPointColor = [self insertionPointColor];
310    NSString *s = [[self textStorage] string]; // according to the class documentation, sending 'string' is guaranteed to be O(1)
311    unsigned extraLen;
312    int i;
313
314    NS_DURING
315
316        NSCAssert(range.location != NSNotFound, ICCF_LocalizedString(@"There is no insertion point or selection in the text field where you clicked"));
317        NSCAssert(s != nil, ICCF_LocalizedString(@"Sorry, ICeCoffEE is unable to locate the insertion point or selection"));
318
319        ICCF_StartIC();
320
321        NSCAssert([s length] != 0, ICCF_LocalizedString(@"No text was found"));
322
323        if (range.location == [s length]) range.location--; // work around bug in selectionRangeForProposedRange (r. 2845418)
324
325        range = [self selectionRangeForProposedRange: range granularity: NSSelectByWord];
326
327        // However, NSSelectByWord does not capture even the approximate boundaries of a URL
328        // (text to a space/line ending character); it'll stop at a period in the middle of a hostname.
329        // So, we expand it as follows:
330
331        ICCF_CheckRange(range);
332
333        ICCF_Delimiters(&urlLeftDelimiters, &urlRightDelimiters);
334
335        // XXX instead of 0, make this stop at the max URL length to prevent protracted searches
336        // add 1 to range to trap delimiters that are on the edge of the selection (i.e., <...)
337        delimiterRange = [s rangeOfCharacterFromSet: urlLeftDelimiters
338                                            options: NSLiteralSearch | NSBackwardsSearch
339                                              range: NSMakeRange(0, range.location + (range.location != [s length]))];
340        if (delimiterRange.location == NSNotFound) {
341            // extend to beginning of string
342            range.length += range.location;
343            range.location = 0;
344        } else {
345            NSCAssert(delimiterRange.length == 1, @"Internal error: delimiter matched range is not of length 1");
346            range.length += range.location - delimiterRange.location - 1;
347            range.location = delimiterRange.location + 1;
348        }
349
350        ICCF_CheckRange(range);
351
352        // XXX instead of length of string, make this stop at the max URL length to prevent protracted searches
353        // add 1 to range to trap delimiters that are on the edge of the selection (i.e., ...>)
354        extraLen = [s length] - range.location - range.length;
355        delimiterRange = [s rangeOfCharacterFromSet: urlRightDelimiters
356                                            options: NSLiteralSearch
357                                              range: NSMakeRange(range.location + range.length - (range.length != 0),
358                                                                 extraLen + (range.length != 0))];
359        if (delimiterRange.location == NSNotFound) {
360            // extend to end of string
361            range.length += extraLen;
362        } else {
363            NSCAssert(delimiterRange.length == 1, @"Internal error: delimiter matched range is not of length 1");
364            range.length += delimiterRange.location - range.location - range.length;
365        }
366
367        ICCF_CheckRange(range);
368
369        ICCF_ParseURL([s substringWithRange: range], &range);
370
371        [self setSelectedRange: range affinity: NSSelectionAffinityDownstream stillSelecting: NO];
372        [self display];
373
374        ICCF_LaunchURL([s substringWithRange: range], ICCF_OptionKeyIsDown());
375
376        if (ICCF_prefs.textBlinkEnabled) {
377            for (i = 0 ; i < ICCF_prefs.textBlinkCount ; i++) {
378                NSRange emptyRange = {range.location, 0};
379                [self setSelectedRange: emptyRange affinity: NSSelectionAffinityDownstream stillSelecting: YES];
380                [self display];
381                usleep(kICBlinkDelayUsecs);
382                [self setInsertionPointColor: [self backgroundColor]];
383                [self setSelectedRange: range affinity: NSSelectionAffinityDownstream stillSelecting: YES];
384                [self display];
385                usleep(kICBlinkDelayUsecs);
386            }
387        }
388
389    NS_HANDLER
390        ICCF_HandleException(localException);
391    NS_ENDHANDLER
392
393    ICCF_StopIC();
394    [self setInsertionPointColor: insertionPointColor];
395}
396
397NSString * const ICCF_SERVICES_ITEM = @"ICeCoffEE Services Item";
398
399NSMenuItem *ICCF_ServicesMenuItem() {
400    NSMenuItem *servicesItem;
401    NSMenu *servicesMenu;
402    // XXX better to just use [[NSApp servicesMenu] title]?  That grabs the title from the existing Services submenu.
403    NSString *servicesTitle = [[NSBundle bundleWithIdentifier: @"com.apple.AppKit"] localizedStringForKey: @"Services" value: nil table: @"ServicesMenu"];
404    if (servicesTitle == nil) {
405        ICLog(@"CanÕt get localized text for ÒServicesÓ in AppKit.framework");
406        servicesTitle = @"Services";
407    }
408    servicesMenu = [[NSMenu alloc] initWithTitle: servicesTitle];
409    servicesItem = [[NSMenuItem alloc] initWithTitle: servicesTitle action:nil keyEquivalent:@""];
410    [[NSApplication sharedApplication] setServicesMenu: servicesMenu];
411    [servicesItem setSubmenu: servicesMenu];
412    [servicesItem setRepresentedObject: ICCF_SERVICES_ITEM];
413    [servicesMenu release];
414    return servicesItem;
415}
416
417void ICCF_AddRemoveServicesMenu() {
418    // needed because:
419    // (a) we get called before the runloop has properly started and will crash if we don't delay on app startup
420    // (b) the APE message handler calls us from another thread and nothing happens if we try to add a menu on it
421    [ICeCoffEE performSelectorOnMainThread: @selector(IC_addRemoveServicesMenu) withObject: nil waitUntilDone: NO];
422}
423
424NSMenu *ICCF_MenuForEvent(NSTextView *self, NSMenu *contextMenu, NSEvent *e) {   
425    if (contextMenu != nil && [e type] == NSRightMouseDown || ([e type] == NSLeftMouseDown && [e modifierFlags] & NSControlKeyMask)) {
426        int servicesItemIndex = [contextMenu indexOfItemWithRepresentedObject: ICCF_SERVICES_ITEM];
427        if (servicesItemIndex == -1 && ICCF_prefs.servicesInContextualMenu) {
428            [contextMenu addItem: [NSMenuItem separatorItem]];
429            [contextMenu addItem: ICCF_ServicesMenuItem()];
430        } else if (servicesItemIndex != -1 && !ICCF_prefs.servicesInContextualMenu) {
431            [contextMenu removeItemAtIndex: servicesItemIndex];
432            [contextMenu removeItemAtIndex: servicesItemIndex - 1];
433        }
434    }
435    return contextMenu;
436}
437
438@implementation ICeCoffEE
439
440+ (void)IC_addRemoveServicesMenu;
441{
442    NSMenu *mainMenu = [[NSApplication sharedApplication] mainMenu];
443    static NSMenuItem *servicesItem = nil;
444   
445    if (servicesItem == nil && ICCF_prefs.servicesInMenuBar) {
446        servicesItem = [ICCF_ServicesMenuItem() retain];
447
448        int insertLoc = [mainMenu indexOfItemWithSubmenu: [NSApp windowsMenu]];
449        if (insertLoc == -1)
450            insertLoc = [mainMenu numberOfItems];
451
452        [mainMenu insertItem: servicesItem atIndex: insertLoc];
453    } else if (servicesItem != nil && !ICCF_prefs.servicesInMenuBar) {
454        [mainMenu removeItem: servicesItem];
455        [servicesItem release];
456        servicesItem = nil;
457    }
458}
459
460// XXX localization?
461- (NSMenu *)menuForEvent:(NSEvent *)e;
462{
463    NSMenu *myMenu = [super menuForEvent: e];
464    return ICCF_MenuForEvent(self, myMenu, e);
465}
466
467- (void)mouseDown:(NSEvent *)e;
468{
469#if ICCF_DEBUG
470    static BOOL down = NO;
471    if (down) {
472        ICLog(@"recursive invocation!");
473        return;
474    }
475    down = YES;
476    ICLog(@"ICeCoffEE down: %@", e);
477#endif
478    // we don't actually get a mouseUp event, just wait for mouseDown to return
479    [super mouseDown: e];
480    if (!ICCF_enabled || !ICCF_prefs.commandClickEnabled) {
481#if ICCF_DEBUG
482        down = NO;
483#endif
484        return;
485    }
486    // don't want command-shift-click, etc. to trigger
487    if (ICCF_EventIsCommandMouseDown(e)) {
488        NSEvent *upEvent = [[self window] currentEvent];
489        NSPoint downPt = [e locationInWindow];
490        NSPoint upPt = [upEvent locationInWindow];
491        ICLog(@"next: %@", upEvent);
492        NSAssert([upEvent type] == NSLeftMouseUp, @"NSTextView mouseDown: did not return with current event as mouse up!");
493        if (abs(downPt.x - upPt.x) <= kICHysteresisPixels && abs(downPt.y - upPt.y) <= kICHysteresisPixels) {
494            ICCF_LaunchURLFromTextView(self);
495        }
496    }
497#if ICCF_DEBUG
498    down = NO;
499#endif
500}
501
502@end
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