source: trunk/ICeCoffEE/ICeCoffEE/ICeCoffEETerminal.m

Last change on this file was 436, checked in by Nicholas Riley, 14 years ago

Use @try/@catch/@finally rather than macro-based exceptions

File size: 17.0 KB
Line 
1//
2// ICeCoffEETerminal.m
3// ICeCoffEE
4//
5// Created by Nicholas Riley on Mon Jan 28 2002.
6// Copyright (c) 2002 Nicholas Riley. All rights reserved.
7//
8
9#import "ICeCoffEETerminal.h"
10#import "ICeCoffEE.h"
11#import "ICeCoffEEParser.h"
12#import <Carbon/Carbon.h>
13#include <unistd.h>
14
15static NSRange ICCF_zeroRange = { NSNotFound, 5 };
16
17#define min(a,b) (a < b ? a : b)
18#define max(a,b) (a > b ? a : b)
19
20@interface TermStorage:NSObject
21- (struct _FSelPt)selPt0;
22- (struct _FSelPt)selPt1;
23- (BOOL)hasSelection;
24- (void)startSelectionAtLine:(unsigned int)row column:(unsigned short)column;
25- (void)startSelectionAtLine:(unsigned int)row offset:(unsigned short)offset;
26- (void)endSelectionAtLine:(unsigned int)row offset:(unsigned short)offset;
27- (void)selectWhitespaceDelimitedTextAtLine:(unsigned int)line offset:(unsigned short)offset;
28- (void)selectWordAtLine:(unsigned int)line offset:(unsigned short)offset;
29- (NSString *)selectedString;
30- (unsigned int)numberOfLines;
31- (unsigned int)effectiveColumnsForLine:(unsigned int)line;
32- (void)clearSelection;
33- (BOOL)isSelected:(unsigned int)line :(unsigned int)column;
34@end
35
36@interface TermController:NSObject
37- (TermStorage *)storage;
38@end
39
40@implementation ICeCoffEETermSubviewSuper
41// NSTextInput implementation
42- (void)insertText:(id)aString {}
43- (void)doCommandBySelector:(SEL)aSelector {}
44- (void)setMarkedText:(id)aString selectedRange:(NSRange)selRange {}
45- (void)unmarkText {}
46- (BOOL)hasMarkedText { return NO; }
47- (long)conversationIdentifier { return 0; }
48- (NSAttributedString *)attributedSubstringFromRange:(NSRange)theRange { return nil; }
49- (NSRange)markedRange { return ICCF_zeroRange; }
50- (NSRange)selectedRange { return ICCF_zeroRange; }
51- (NSRect)firstRectForCharacterRange:(NSRange)theRange { return NSZeroRect; }
52- (unsigned int)characterIndexForPoint:(NSPoint)thePoint { return 0; }
53- (NSArray*)validAttributesForMarkedText { return nil; }
54// NSDraggingDestination
55- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender { return NSDragOperationNone; }
56// misc. other stuff
57- (void)_optionClickEvent:(NSEvent *)event:(unsigned int)row:(unsigned short)column {}
58- (void)setNeedsDisplay {}
59// NSView methods (needed to avoid crash in super invocation)
60- (void)mouseUp:(NSEvent *)e { [super mouseUp: e]; }
61- (void)mouseDown:(NSEvent *)e { [super mouseDown: e]; }
62@end
63
64@interface ICeCoffEETerminalRange : NSObject
65{
66 TermStorage *storage;
67 struct _FSelPt pt0;
68 struct _FSelPt pt1;
69 unsigned int width;
70 unsigned int height;
71}
72
73+ (ICeCoffEETerminalRange *)rangeWithTerminal:(ICeCoffEETerminal *)terminal;
74+ (ICeCoffEETerminalRange *)rangeWithTerminal:(ICeCoffEETerminal *)terminal pt0:(struct _FSelPt)selPt0 pt1:(struct _FSelPt)selPt1;
75
76- (id)initWithTerminal:(ICeCoffEETerminal *)terminal;
77- (id)initWithTerminal:(ICeCoffEETerminal *)terminal pt0:(struct _FSelPt)selPt0 pt1:(struct _FSelPt)selPt1;
78
79- (struct _FSelPt)pt0;
80- (struct _FSelPt)pt1;
81
82- (NSString *)stringFromRange;
83
84- (void)growBackwardByLength:(unsigned long)length;
85- (void)growForwardByLength:(unsigned long)length;
86
87- (void)shrinkBackByLength:(unsigned long)length;
88- (void)shrinkFrontByLength:(unsigned long)length;
89
90- (BOOL)rangeIsEmpty;
91
92- (void)select;
93
94@end
95
96@implementation ICeCoffEETerminalRange
97
98+ (ICeCoffEETerminalRange *)rangeWithTerminal:(ICeCoffEETerminal *)terminal;
99{
100 return [[[self alloc] initWithTerminal: terminal] autorelease];
101}
102
103+ (ICeCoffEETerminalRange *)rangeWithTerminal:(ICeCoffEETerminal *)terminal pt0:(struct _FSelPt)selPt0 pt1:(struct _FSelPt)selPt1;
104{
105 return [[[self alloc] initWithTerminal: terminal pt0: selPt0 pt1: selPt1] autorelease];
106}
107
108- (id)initWithTerminal:(ICeCoffEETerminal *)terminal;
109{
110 if ( (self = [self init]) != nil) {
111 storage = [(TermController *)[terminal valueForKey: @"controller"] storage];
112 pt0 = [storage selPt0];
113 pt1 = [storage selPt1];
114 width = [storage effectiveColumnsForLine: pt0.line];
115 height = [storage numberOfLines];
116 }
117 return self;
118}
119
120- (id)initWithTerminal:(ICeCoffEETerminal *)terminal pt0:(struct _FSelPt)selPt0 pt1:(struct _FSelPt)selPt1;
121{
122 if ( (self = [self initWithTerminal: terminal]) != nil) {
123 pt0 = selPt0;
124 pt1 = selPt1;
125 }
126 return self;
127}
128
129- (struct _FSelPt)pt0;
130{
131 return pt0;
132}
133
134- (struct _FSelPt)pt1;
135{
136 return pt1;
137}
138
139- (NSString *)stringFromRange;
140{
141 struct _FSelPt oldPt0 = [storage selPt0], oldPt1 = [storage selPt1];
142 NSString *str;
143
144 [storage startSelectionAtLine: pt0.line offset: pt0.col];
145 [storage endSelectionAtLine: pt1.line offset: pt1.col];
146
147 str = [storage selectedString];
148
149 [storage startSelectionAtLine: oldPt0.line offset: oldPt0.col];
150 [storage endSelectionAtLine: oldPt1.line offset: oldPt1.col];
151
152 return str;
153}
154
155- (struct _FSelPt)_moveBack:(struct _FSelPt)pt byLength:(unsigned long)length;
156{
157 unsigned int extraLines = length / width;
158 if ((long)(pt.line - extraLines) < 0) {
159 pt.line = 0;
160 pt.col = 0;
161 } else if (pt.line - extraLines == 0) {
162 pt.line = 0;
163 pt.col += width - (length % height);
164 if (pt.col < width) pt.col = 0;
165 else pt.col -= width;
166 } else {
167 pt.line -= extraLines;
168 pt.col += width - (length % height);
169 if (pt.col < width) pt.line--;
170 else pt.col -= width;
171 }
172 return pt;
173}
174
175- (struct _FSelPt)_moveForward:(struct _FSelPt)pt byLength:(unsigned long)length;
176{
177 unsigned int extraLines = length / width;
178 if (pt.line + extraLines >= height) {
179 pt.line = height - 1;
180 pt.col = width - 1;
181 } else if (pt.line + extraLines == height - 1) {
182 pt.line = height - 1;
183 pt.col += length % height;
184 if (pt.col >= width) pt.col = width - 1;
185 } else {
186 pt.line += extraLines;
187 pt.col = pt.col + (length % height);
188 if (pt.col > width) {
189 pt.line++;
190 pt.col -= width;
191 }
192 }
193 return pt;
194}
195
196- (BOOL)rangeIsEmpty;
197{
198 return (pt1.line < pt0.line) || (pt1.line == pt0.line && pt1.col <= pt0.col);
199}
200
201- (void)growBackwardByLength:(unsigned long)length;
202{
203 pt0 = [self _moveBack: pt0 byLength: length];
204}
205
206- (void)growForwardByLength:(unsigned long)length;
207{
208 pt1 = [self _moveForward: pt1 byLength: length];
209}
210
211- (void)shrinkFrontByLength:(unsigned long)length;
212{
213 pt0 = [self _moveForward: pt0 byLength: length];
214}
215
216- (void)shrinkBackByLength:(unsigned long)length;
217{
218 pt1 = [self _moveBack: pt1 byLength: length];
219}
220
221- (void)select;
222{
223 [storage startSelectionAtLine: pt0.line offset: pt0.col];
224 [storage endSelectionAtLine: pt1.line offset: pt1.col];
225}
226
227- (NSString *)description;
228{
229 return [NSString stringWithFormat: @"L%uC%hu - L%uC%hu: |%@|", pt0.line, pt0.col, pt1.line, pt1.col, [[self stringFromRange] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]]];
230}
231
232@end
233
234// TermSubview's NSTextInput implementation is essentially a noop: make one that does something
235@implementation ICeCoffEETerminal // XXX normally in category (NSTextInput), but APE doesnÕt work if I do that
236
237- (NSRange)selectedRange {
238 TermStorage *storage = [(TermController *)[self valueForKey: @"controller"] storage];
239 struct _FSelPt selPt0 = [storage selPt0], selPt1 = [storage selPt1];
240 unsigned width = [storage effectiveColumnsForLine: selPt0.line];
241 unsigned pt0 = selPt0.line * width + selPt0.col;
242 ICLog(@"selPt0 %d x %d selPt1 %d x %d", selPt0.line, selPt0.col, selPt1.line, selPt1.col);
243 return NSMakeRange(pt0, selPt1.line * width + selPt1.col - pt0);
244}
245
246// XXX string isn't padded: what we need is something like the ICeCoffEE 1.2.x method, adapted to Terminal 1.2, but we've chosen another way
247- (NSAttributedString *)attributedSubstringFromRange:(NSRange)theRange;
248{
249 TermStorage *storage = [(TermController *)[self valueForKey: @"controller"] storage];
250 struct _FSelPt oldPt0 = [storage selPt0], oldPt1 = [storage selPt1], realPt0, realPt1;
251 unsigned pt1 = theRange.location + theRange.length;
252 unsigned width = [storage effectiveColumnsForLine: 0];
253 NSAttributedString *str;
254
255 realPt0.line = theRange.location / width;
256 realPt0.col = theRange.location % width;
257 realPt1.line = pt1 / width;
258 realPt1.col = pt1 % width;
259
260 [storage startSelectionAtLine: realPt0.line offset: realPt0.col];
261 [storage endSelectionAtLine: realPt1.line offset: realPt1.col];
262
263 str = [[NSAttributedString alloc] initWithString: [storage selectedString]];
264
265 NSAssert2([str length] == theRange.length, @"Substring has length %lu when we expected %lu", [str length], theRange.length);
266
267 [storage startSelectionAtLine: oldPt0.line offset: oldPt0.col];
268 [storage endSelectionAtLine: oldPt1.line offset: oldPt1.col];
269
270 return [str autorelease];
271}
272
273static NSEvent *ICCF_downEvent;
274static unsigned int ICCF_line;
275static unsigned short ICCF_col;
276static BOOL ICCF_optionClickRegistered;
277
278- (void)setSelectedRange:(NSRange)charRange affinity:(NSSelectionAffinity)affinity stillSelecting:(BOOL)stillSelectingFlag;
279{
280 TermStorage *storage = [(TermController *)[self valueForKey: @"controller"] storage];
281 unsigned width = [storage effectiveColumnsForLine: 0];
282 unsigned pt1 = charRange.location + charRange.length;
283 [storage startSelectionAtLine: charRange.location / width offset: charRange.location % width];
284 [storage endSelectionAtLine: pt1 / width offset: pt1 % width];
285 // [self refresh];
286}
287
288void ICCF_LaunchURLFromTerminal(ICeCoffEETerminal *self) {
289 NSCharacterSet *urlLeftDelimiters = nil, *urlRightDelimiters = nil;
290
291 ICeCoffEETerminalRange *termRange = nil, *selRange = nil;
292 NSString *s;
293 NSRange range, delimiterRange;
294
295 @try {
296 TermStorage *storage = [(TermController *)[self valueForKey: @"controller"] storage];
297
298 if ([storage hasSelection] && [storage isSelected: ICCF_line : ICCF_col]) {
299 selRange = [ICeCoffEETerminalRange rangeWithTerminal: self];
300 } else { // select something
301 // XXX test this next line, it may be what's causing a Terminal bug to exhibit itself
302 [storage selectWordAtLine: ICCF_line offset: ICCF_col];
303 selRange = [ICeCoffEETerminalRange rangeWithTerminal: self];
304 NSCAssert(![selRange rangeIsEmpty], ICCF_LocalizedString(@"Sorry, ICeCoffEE was unable to find anything to select"));
305 }
306
307 // However, word selection does not capture even the approximate boundaries of a URL
308 // (text to a space/line ending character); it'll stop at a period in the middle of a hostname.
309 // So, we expand it as follows:
310
311 ICCF_Delimiters(&urlLeftDelimiters, &urlRightDelimiters);
312
313 termRange = [ICeCoffEETerminalRange rangeWithTerminal: self pt0: [selRange pt0] pt1: [selRange pt0]];
314 [termRange growBackwardByLength: ICCF_MAX_URL_LEN]; // potentially too big
315
316expandFront:
317 s = [termRange stringFromRange];
318 ICLog(@"front %@", termRange);
319 delimiterRange = [s rangeOfCharacterFromSet: urlLeftDelimiters
320 options: NSLiteralSearch | NSBackwardsSearch];
321 if (delimiterRange.location == NSNotFound) {
322 // extend to beginning of string (as much as possible)
323 [selRange growBackwardByLength: [s length]];
324 } else {
325 NSCAssert(delimiterRange.length == 1, @"Internal error: delimiter matched range is not of length 1");
326 [selRange growBackwardByLength: [s length] - delimiterRange.location - 1];
327
328 // in url/(parens)stuff, handle clicking inside or after (parens).
329 if ([s characterAtIndex: delimiterRange.location] == '(') {
330 s = [selRange stringFromRange];
331 if ([s rangeOfString: @")"].location != NSNotFound ||
332 [s rangeOfCharacterFromSet: [NSCharacterSet characterSetWithCharactersInString: @"/."]].location == NSNotFound) {
333 [selRange growBackwardByLength: 1];
334 ICLog(@"expanding past (, now |%@|", selRange);
335 [termRange shrinkBackByLength: [[termRange stringFromRange] length] - delimiterRange.location];
336 goto expandFront;
337 }
338 }
339 }
340
341 ICLog(@"parsed front %@", selRange);
342
343 termRange = [ICeCoffEETerminalRange rangeWithTerminal: self pt0: [selRange pt1] pt1: [selRange pt1]];
344 [termRange growForwardByLength: ICCF_MAX_URL_LEN]; // potentially too big
345
346expandBack:
347 s = [termRange stringFromRange];
348 ICLog(@"back %@", termRange);
349 delimiterRange = [s rangeOfCharacterFromSet: urlRightDelimiters
350 options: NSLiteralSearch];
351 if (delimiterRange.location == NSNotFound) {
352 // extend to end of string
353 [selRange growForwardByLength: [s length]];
354 } else {
355 NSCAssert(delimiterRange.length == 1, @"Internal error: delimiter matched range is not of length 1");
356 [selRange growForwardByLength: delimiterRange.location];
357
358 // grow URL past closing paren if we've seen an open paren
359 if ([s characterAtIndex: delimiterRange.location] == ')' &&
360 [[selRange stringFromRange] rangeOfString: @"("].location != NSNotFound) {
361 [selRange growForwardByLength: 1];
362 ICLog(@"expanding past ), now |%@|", selRange);
363 [termRange shrinkFrontByLength: delimiterRange.location + 1];
364 goto expandBack;
365 }
366 }
367
368 ICCF_StartIC();
369
370 s = [selRange stringFromRange];
371
372 range = NSMakeRange(0, [s length]);
373
374 ICCF_CheckRange(range);
375
376 ICLog(@"parsed back %@", selRange);
377 ICLog(@"range of string %@", NSStringFromRange(range));
378 ICCF_ParseURL(s, &range);
379 ICLog(@"parsed range %@ |%@|", NSStringFromRange(range), [s substringWithRange: range]);
380
381 [selRange shrinkFrontByLength: range.location];
382 [selRange shrinkBackByLength: [s length] - range.length - range.location];
383
384 s = [selRange stringFromRange];
385 ICLog(@"reconstituted URL %@", selRange);
386
387 [selRange select];
388 [self setNeedsDisplay];
389 [[self superview] display];
390
391 if (ICCF_LaunchURL(s, ICCF_KeyboardAction([NSApp currentEvent])) && ICCF_prefs.textBlinkEnabled) {
392 int i;
393 // Terminal flashes the selection one more time, so blink one fewer
394 for (i = 1 ; i < ICCF_prefs.textBlinkCount ; i++) {
395 [storage clearSelection];
396 [self setNeedsDisplay];
397 [[self superview] display];
398 usleep(kICBlinkDelayUsecs);
399 [selRange select];
400 [self setNeedsDisplay];
401 [[self superview] display];
402 usleep(kICBlinkDelayUsecs);
403 }
404 }
405 } @catch (NSException *e) {
406 ICCF_HandleException(e, ICCF_downEvent);
407 }
408
409 ICCF_StopIC();
410}
411
412- (void)_optionClickEvent:(NSEvent *)event:(unsigned int)row:(unsigned short)column;
413{
414 if (ICCF_downEvent != nil) {
415 ICCF_line = row; // XXX are these lines or rows? check with wrapping
416 ICCF_col = column;
417 ICCF_optionClickRegistered = YES;
418 } else {
419 [super _optionClickEvent: event :row :column];
420 }
421}
422
423- (void)mouseUp:(NSEvent *)upEvent;
424{
425 ICLog(@"ICeCoffEE Terminal up: %@", upEvent);
426 [super mouseUp: upEvent];
427 if (ICCF_downEvent != nil) {
428 NSPoint downPt = [ICCF_downEvent locationInWindow];
429 NSPoint upPt = [upEvent locationInWindow];
430 if (abs(downPt.x - upPt.x) <= kICHysteresisPixels && abs(downPt.y - upPt.y) <= kICHysteresisPixels) {
431 if (ICCF_optionClickRegistered) {
432 ICCF_optionClickRegistered = NO;
433 ICLog(@"========= launching... %d x %d", ICCF_line, ICCF_col);
434 ICCF_LaunchURLFromTerminal(self);
435 }
436 }
437 [ICCF_downEvent release];
438 ICCF_downEvent = nil;
439 }
440}
441
442- (void)mouseDown:(NSEvent *)downEvent;
443{
444 if (ICCF_enabled && ICCF_prefs.commandClickEnabled && ICCF_EventIsCommandMouseDown(downEvent)) {
445 NSEvent *optionClickEvent = [NSEvent mouseEventWithType: NSLeftMouseDown location: [downEvent locationInWindow] modifierFlags: NSAlternateKeyMask timestamp: [downEvent timestamp] windowNumber: [downEvent windowNumber] context: [downEvent context] eventNumber: [downEvent eventNumber] clickCount: 1 pressure: 0];
446 [ICCF_downEvent release];
447 ICCF_downEvent = [downEvent retain];
448 ICLog(@"ICeCoffEE Terminal constructed: %@", optionClickEvent);
449 ICCF_optionClickRegistered = NO;
450 [super mouseDown: optionClickEvent];
451 } else {
452 [super mouseDown: downEvent];
453 }
454}
455
456// NSDraggingDestination
457// -[TermSubview draggingUpdated:] just invokes draggingEntered...
458// XXX Crashing on repeated drag snap-back can happen even without ICeCoffEE installed; don't bother to try to fix
459- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender;
460{
461 if (!ICCF_prefs.terminalRequireOptionForSelfDrag || [sender draggingSource] != self || ([[NSApp currentEvent] modifierFlags] & NSAlternateKeyMask)) {
462 [super draggingEntered: sender];
463 // When doing non-self drags, this works around one bug in Terminal wherein the option key acts as a toggle, and it shouldn't (see Aqua HIG). Unfortunately, this messes up drag feedback for self drags, but I don't know of any way to fix it. Not that most Cocoa apps get it remotely right, anyway.
464 return NSDragOperationCopy;
465 }
466 return NSDragOperationNone;
467}
468
469@end
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