LetterFix.m

   1 //
   2 //  LetterFix.m
   3 //  LetterFix2
   4 //
   5 //  Created by kuri on 10/02/01.
   6 //  Copyright 2010-2017 kuri. All rights reserved.
   7 //
   8 #import <objc/runtime.h>
   9 #import <objc/objc-runtime.h>
  10 #import <WebKit/WebKit.h>
  11 #import "LetterFix.h"
  12 #import "LFApp.h"
  13
  14 static NSMutableArray *khash;
  15 static NSMutableArray *check_at_save;
  16 static LFApp *app;
  17 static NSString *roman[] = {@"I", @"II", @"III", @"IV", @"V", @"VI", @"VII", @"VIII", @"IX", @"X"};
  18 static NSString *dep[] = {@"ミリ", @"キロ", @"センチ", @"メートル", @"グラム", @"トン", @"アール", @"ヘクタール",
  19     @"リットル", @"ワット", @"カロリー", @"ドル", @"セント", @"パーセント", @"ミリバール", @"ページ",
  20     @"mm", @"cm", @"km", @"mg", @"kg", @"cc", @"明治", @"大正", @"昭和", @"平成", @"No.", @"K.K.", @"TEL",
  21     @"(上)", @"(中)", @"(下)", @"(左)", @"(右)", @"(株)", @"(有)", @"(代)", @"Σ"};
  22 static NSString *dayOfWeek = @"㈰㈪㈫㈬㈭㈮㈯㉀㈷㉂㉃㈹㈺㈱㈾㈴㈲㈻㈶㈳㈵㈼㈽㈿㈸";
  23 static NSString *subOfDayOfWeek[] = {@"(日)",@"(月)",@"(火)",@"(水)",@"(木)",@"(金)",@"(土)",@"(祭)",@"(祝)",@"(自)",
  24     @"(至)",@"(代)",@"(呼)",@"(株)",@"(資)",@"(名)",@"(有)",@"(学)",@"(財)",@"(社)",
  25     @"(特)",@"(監)",@"(企)",@"(協)",@"(労)"};
  26 static NSString *circledNumbers = @"①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬⑭⑮⑯⑰⑱⑲⑳ⅠⅡⅢⅣⅤ";
  27 static NSString *subOfCircledNum[] = {@"(1)",@"(2)",@"(3)",@"(4)",@"(5)",@"(6)",@"(7)",@"(8)",@"(9)",@"(10)",
  28     @"(11)",@"(12)",@"(13)",@"(14)",@"(15)",@"(16)",@"(17)",@"(18)",@"(19)",@"(20)",
  29     @"I",@"II",@"III",@"IV",@"V"};
  30 static NSString *symbols = @"㍉㌔㌢㍍㌘㌧㌃㌶㍑㍗㌍㌦㌣㌫㍊㌻㎜㎝㎞㎎㎏㏄㍾㍽㍼㍻№㏍℡㊤㊥㊦㊧㊨㈱㈲㈹∑";
  31
  32 static unsigned long long LF_Encoding_ISO2022JP = NSISO2022JPStringEncoding;
  33 static unsigned long long LF_Encoding_Auto = 0;
  34
  35 void swizzlingMethod(Class aClass, SEL aSelector, SEL nSelector, IMP nImplement) {
  36     Method orig_method, alt_method;
  37
  38     if ((orig_method = class_getInstanceMethod(aClass, aSelector)) == NULL) {
  39         NSLog(@"Swizzling Method: Original Method is not found. [%@ %@]", NSStringFromClass(aClass), NSStringFromSelector(aSelector));
  40         return; // Original Method is not found.
  41     }
  42     // If orig_method was the superclass's instance method, so now we'll add the implement as method of self class.
  43     if (class_addMethod(aClass, aSelector, method_getImplementation(orig_method), method_getTypeEncoding(orig_method)) == YES) {
  44         orig_method = class_getInstanceMethod(aClass, aSelector);
  45     }
  46     if (class_addMethod(aClass, nSelector, nImplement, method_getTypeEncoding(orig_method)) == NO) {
  47         NSLog(@"Swizzling Method: Can't add new method.");
  48         return; // Can't add new method
  49     }
  50     alt_method  = class_getInstanceMethod(aClass, nSelector);
  51     method_exchangeImplementations(orig_method, alt_method);
  52     //NSLog(@"Swizzling Method: Success.");
  53 }
  54
  55 static void backendSetPreferredEncoding(id backend, unsigned long long encoding)
  56 {
  57     if ([app ver] == LF_Mavericks) {
  58         Ivar ivar = object_getInstanceVariable(backend, "_flags", NULL);
  59         _LF_flags *_flags = (_LF_flags *)((char *)backend + ivar_getOffset(ivar));
  60         _flags->encodingHint = encoding;
  61     } else if ([app ver] == LF_Yosemite || [app ver] == LF_ElCapitan ||
  62                [app ver] == LF_Sierra || [app ver] == LF_HighSierra ||
  63                [app ver] == LF_Mojave) {
  64         [backend setEncodingHint: encoding];
  65     }
  66 }
  67
  68 static unsigned long long backendGetPreferredEncoding(id backend)
  69 {
  70     if ([app ver] == LF_Mavericks) {
  71         Ivar ivar = object_getInstanceVariable(backend, "_flags", NULL);
  72         _LF_flags *_flags = (_LF_flags *)((char *)backend + ivar_getOffset(ivar));
  73         return _flags->encodingHint; //FIXME: [backend _encodingHint] return wrong value?
  74     } else if ([app ver] == LF_Yosemite || [app ver] == LF_ElCapitan ||
  75                [app ver] == LF_Sierra || [app ver] == LF_HighSierra ||
  76                [app ver] == LF_Mojave) {
  77         return [backend encodingHint];
  78     }
  79     return LF_Encoding_Auto;
  80 }
  81
  82 int fixTextNode(DOMText *node, DOMRange *range, BOOL isCheck, BOOL isOpen)
  83 {
  84     int      replaced = 0;
  85     int      c_start = -1;
  86     int      c_end = -1;
  87     int      i;
  88
  89     if ([node nodeType] != DOM_TEXT_NODE) return 0;
  90
  91     // 文字列選択位置を保存
  92     if ([node isEqualNode:[range startContainer]]) {
  93         c_start = [range startOffset];
  94     }
  95     if ([node isEqualNode:[range endContainer]]) {
  96         c_end = [range endOffset];
  97     }
  98
  99     // 誤ったUnicodeテーブルが用いられている文字を本来の文字に置換
 100     for (i = 0; i < [[node data] length]; i++) {
 101         switch ([[node data] characterAtIndex:i]) {
 102             case 0x2015: // ―
 103                 [node replaceData:i length:1 data:@"—"]; // U+2014
 104                 break;
 105             case 0xff5e: // ～
 106                 [node replaceData:i length:1 data:@"〜"]; // U+301c
 107                 break;
 108             case 0x2225: // ∥
 109                 [node replaceData:i length:1 data:@"‖"]; // U+2016
 110                 break;
 111             case 0xff0d: // －
 112                 [node replaceData:i length:1 data:@"−"]; // U+2212
 113                 break;
 114             case 0xffe0: // ￠
 115                 [node replaceData:i length:1 data:@"¢"]; // U+00a2
 116                 break;
 117             case 0xffe1: // ￡
 118                 [node replaceData:i length:1 data:@"£"]; // U+00a3
 119                 break;
 120             case 0xffe2: // ￢
 121                 [node replaceData:i length:1 data:@"¬"]; // U+00ac
 122                 break;
 123         }
 124     }
 125
 126     for (i = 0; i < [[node data] length]; i++) {
 127         NSString *us = [[node data] substringWithRange:NSMakeRange(i, 1)];
 128         unichar   uc = [us characterAtIndex:0];
 129         NSInteger loc;
 130         NSString *ns = nil;
 131         if ([us canBeConvertedToEncoding:NSISO2022JPStringEncoding] != YES && uc != 0xa0) {
 132             replaced++;
 133             if (isOpen) { // 編集開始時
 134                 if ([app isOsDependentFix] == YES) {
 135                     if ((loc = [dayOfWeek rangeOfString:us].location) != NSNotFound) {
 136                         if ([app parenSymbolFix] == YES) {
 137                             if (((loc == 11)||(loc == 13)||(loc == 16)) &&
 138                                 ([app someParenSymbolNotFix] == YES)) {
 139                                 ns = subOfDayOfWeek[loc];
 140                             } else {
 141                                 ns = subOfCircledNum[loc];
 142                             }
 143                         } else {
 144                             ns = subOfDayOfWeek[loc];
 145                         }
 146                     } else { // (SnowLeopard or Lion) OR (not DayOfWeek)
 147                         if ((0x2460 <= uc) && (uc <= 0x2473)) {       // ①〜⑳ -> (1)〜(20)
 148                             ns = subOfCircledNum[uc-0x2460];
 149                         } else if ((0x2160 <= uc && uc <= 0x2169) && ([app isOsDependentFix]==YES)) {// Ⅰ〜Ⅹ -> I〜X
 150                             ns = roman[uc-0x2160];
 151                         } else if (((loc = [symbols rangeOfString:us].location) != NSNotFound)
 152                                    ) {
 153                             ns = dep[loc];
 154                         } else {
 155                             if ([app isAllLetterFix] == YES) {
 156                                 ns = @"〓";
 157                             } else { // [app isAllLetterFix] == NO
 158                                 ns = us;
 159                             }
 160                         }
 161                     }
 162                 } else { // [app isOsDependentFix] == NO
 163                     if ([app isAllLetterFix] == YES) {
 164                         ns = @"〓";
 165                     } else { // [app isAllLetterFix] == NO
 166                         ns = us;
 167                     }
 168                 }
 169             } else { // 保存・送信時
 170                 if ([app isOsDependentFix] == YES) {
 171                     if ((0x2460 <= uc) && (uc <= 0x2473)) {       // ①〜⑳ -> (1)〜(20)
 172                         ns = subOfCircledNum[uc-0x2460];
 173                     } else if ((0x2160 <= uc && uc <= 0x2169) && ([app isOsDependentFix]==YES)) {// Ⅰ〜Ⅹ -> I〜X
 174                         ns = roman[uc-0x2160];
 175                     } else if ((loc = [symbols rangeOfString:us].location) != NSNotFound) {
 176                         ns = dep[loc];
 177                     } else if ((loc = [dayOfWeek rangeOfString:us].location) != NSNotFound) {
 178                         ns = subOfDayOfWeek[loc];
 179                     } else {
 180                         if ([app isAllLetterFix] == YES) {
 181                             ns = @"〓";
 182                         } else { // [app isAllLetterFix] == NO
 183                             ns = us;
 184                         }
 185                     }
 186                 } else { // [app isOsDependentFix] == NO
 187                     if ([app isAllLetterFix] == YES) {
 188                         ns = @"〓";
 189                     } else { // [app isAllLetterFix] == NO
 190                         ns = us;
 191                     }
 192                 }
 193             }
 194
 195             if ((c_start != -1) && (i < c_start)) {
 196                 c_start += [ns length] - 1;
 197             }
 198             if ((c_end != -1) && (i < c_end)) {
 199                 c_end += [ns length] - 1;
 200             }
 201             if (!isCheck) {
 202                 [node replaceData:i length:1 data:ns];
 203                 i += [ns length] - 1;
 204             }
 205         }
 206     }
 207     if (!isCheck) {
 208         if ((c_start != -1) && 0 < replaced) {
 209             [range setStart:node offset:c_start];
 210         }
 211         if ((c_end != -1) && 0 < replaced) {
 212             [range setEnd:node offset:c_end];
 213         }
 214     }
 215     return replaced;
 216 }
 217
 218 int fixReflexively(DOMNode *node, DOMRange *range, BOOL isCheck, BOOL isOpen)
 219 {
 220     DOMNode *n;
 221     int      replaced = 0;
 222
 223     if ([node hasChildNodes]) {
 224         for (n = [node firstChild]; n != NULL; n = [n nextSibling]) {
 225             replaced += fixReflexively(n, range, isCheck, isOpen); // 再帰的にノードをたどる
 226         }
 227     } else {
 228         if ([node nodeType] == DOM_TEXT_NODE) {
 229             replaced = fixTextNode((DOMText*)node, range, isCheck, isOpen);
 230         }
 231     }
 232     return replaced;
 233 }
 234
 235 int fixLetter(id self, id composeView, BOOL isCheck, BOOL isOpen)
 236 {
 237     int replaced = 0;
 238
 239     @try {
 240         WebFrame    *frame     = [(WebView *)composeView mainFrame];
 241         DOMDocument *dom       = [frame DOMDocument];
 242         DOMElement  *root      = [dom documentElement];
 243         DOMNodeList *nodelist  = [root getElementsByTagName:@"body"];
 244
 245         if ([nodelist length] != 1) return -1;
 246
 247         DOMNode     *body      = [nodelist item:0];
 248         DOMRange    *range     = [composeView selectedDOMRange];
 249
 250         replaced = fixReflexively(body, range, isCheck, isOpen);
 251
 252         if (0 < replaced && !isCheck) {
 253             [composeView setSelectedDOMRange:range affinity:NSSelectionAffinityUpstream];
 254         }
 255     }
 256     @catch (NSException * e) {
 257         NSLog(@"LetterFix: caught %@ %@", [e name], [e reason]);
 258     }
 259
 260     return replaced;
 261 }
 262
 263 BOOL checkSubject(id self)
 264 {
 265     NSMutableString *substr = [NSMutableString stringWithString:[[self backEnd] subject]];
 266     NSInteger i;
 267
 268     for (i = 0; i < [substr length]; i++) {
 269         NSString *us = [substr substringWithRange:NSMakeRange(i, 1)];
 270         unichar   uc = [us characterAtIndex:0];
 271         switch (uc) {
 272             case 0x2015: // ―
 273             case 0xff5e: // ～
 274             case 0x2225: // ∥
 275             case 0xff0d: // －
 276             case 0xffe0: // ￠
 277             case 0xffe1: // ￡
 278             case 0xffe2: // ￢
 279                 return TRUE;
 280             default:
 281                 if ([us canBeConvertedToEncoding:NSISO2022JPStringEncoding] != YES) return TRUE;
 282                 break;
 283         }
 284     }
 285
 286     return FALSE;
 287 }
 288
 289 BOOL checkSubjectOnLoad(id self)
 290 {
 291     NSMutableString *substr = [NSMutableString stringWithString:[[self backEnd] subject]];
 292     NSInteger i, loc;
 293
 294     for (i = 0; i < [substr length]; i++) {
 295         NSString *us = [substr substringWithRange:NSMakeRange(i, 1)];
 296         if ([us canBeConvertedToEncoding:NSISO2022JPStringEncoding] != YES) {
 297             if (([app isOsDependentFix] == YES) && ([app parenSymbolFix] == YES) &&
 298                 ((loc = [dayOfWeek rangeOfString:us].location) != NSNotFound) &&
 299                 ([app someParenSymbolNotFix] == NO || (loc != 11 && loc != 13 && loc != 16))) {
 300                 return TRUE;
 301             }
 302         }
 303     }
 304     return FALSE;
 305 }
 306
 307 void fixSubjectOnLoad(id self)
 308 {
 309     NSMutableString *substr = [NSMutableString stringWithString:[[self backEnd] subject]];
 310
 311     NSInteger i;
 312     for (i = 0; i < [substr length]; i++) {
 313         NSString *us = [substr substringWithRange:NSMakeRange(i, 1)];
 314         unichar   uc = [us characterAtIndex:0];
 315         NSInteger loc;
 316
 317         switch (uc) {
 318             case 0x2015: // ―
 319                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"—"];
 320                 break;
 321             case 0xff5e: // ～
 322                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"〜"];
 323                 break;
 324             case 0xff0d: // －
 325                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"−"];
 326                 break;
 327             case 0x2225: // ∥
 328                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"‖"];
 329                 break;
 330             case 0xffe0: // ￠
 331                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"¢"];
 332                 break;
 333             case 0xffe1: // ￡
 334                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"£"];
 335                 break;
 336             case 0xffe2: // ￢
 337                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"¬"];
 338                 break;
 339             default:
 340                 if ([us canBeConvertedToEncoding:NSISO2022JPStringEncoding] != YES) {
 341                     if (([app isOsDependentFix] == YES) && ([app parenSymbolFix] == YES) &&
 342                         ((loc = [dayOfWeek rangeOfString:us].location) != NSNotFound) &&
 343                         ([app someParenSymbolNotFix] == NO || (loc != 11 && loc != 13 && loc != 16))) {
 344                         [substr replaceCharactersInRange:NSMakeRange(i, 1)
 345                                               withString:[circledNumbers substringWithRange:NSMakeRange(loc, 1)]];
 346                     }
 347                 }
 348                 break;
 349         }
 350     }
 351     [[(LetterFix *)self backEnd] setSubject:substr];
 352     [[self _windowLF] setTitle:substr];
 353
 354     id headers = [self headersEditor];
 355     NSTextField *subjectField = nil;
 356     object_getInstanceVariable(headers, "_subjectField", (void **)&subjectField);
 357     if (subjectField != nil)
 358         [subjectField setStringValue:substr];
 359 }
 360
 361 void fixHeader(id self)
 362 {
 363     NSMutableString *substr = [NSMutableString stringWithString:[[self backEnd] subject]];
 364
 365     NSInteger i;
 366     for (i = 0; i < [substr length]; i++) {
 367         NSString *us = [substr substringWithRange:NSMakeRange(i, 1)];
 368         unichar   uc = [us characterAtIndex:0];
 369         NSString *ns;
 370         NSInteger loc;
 371
 372         switch (uc) {
 373             case 0x2015: // ―
 374                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"—"];
 375                 break;
 376             case 0xff5e: // ～
 377                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"〜"];
 378                 break;
 379             case 0xff0d: // －
 380                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"−"];
 381                 break;
 382             case 0x2225: // ∥
 383                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"‖"];
 384                 break;
 385             case 0xffe0: // ￠
 386                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"¢"];
 387                 break;
 388             case 0xffe1: // ￡
 389                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"£"];
 390                 break;
 391             case 0xffe2: // ￢
 392                 [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:@"¬"];
 393                 break;
 394             default:
 395                 if ([us canBeConvertedToEncoding:NSISO2022JPStringEncoding] != YES) {
 396                     if ((0x2460 <= uc && uc <= 0x2473) && ([app isOsDependentFix]==YES)) {       // ①〜⑳ -> (1)〜(20)
 397                         ns = subOfCircledNum[uc-0x2460];
 398                     } else if ((0x2160 <= uc && uc <= 0x2169) && ([app isOsDependentFix]==YES)) {// Ⅰ〜Ⅹ -> I〜X
 399                         ns = roman[uc-0x2160];
 400                     } else if (((loc = [symbols rangeOfString:us].location) != NSNotFound)
 401                                && ([app isOsDependentFix]==YES)) {
 402                         ns = dep[loc];
 403                     } else {
 404                         ns = @"〓";
 405                     }
 406                     [substr replaceCharactersInRange:NSMakeRange(i, 1) withString:ns];
 407                     if (1 < [ns length]) {
 408                         i += [ns length] - 1;
 409                     }
 410                 }
 411                 break;
 412         }
 413     }
 414     [[(LetterFix *)self backEnd] setSubject:substr];
 415     [[self _windowLF] setTitle:substr];
 416
 417     id headers = [self headersEditor];
 418     NSTextField *subjectField = nil;
 419     object_getInstanceVariable(headers, "_subjectField", (void **)&subjectField);
 420     if (subjectField != nil)
 421         [subjectField setStringValue:substr];
 422 }
 423
 424 BOOL _LF_IMP_isLoaded(id self, SEL _cmd)
 425 {
 426     BOOL result = [self _LF_isLoaded]; // call swizzled(original) method
 427     if ([app isActive] == NO) {
 428         return result;
 429     }
 430     if (result == NO) {
 431         [khash removeObject:self];
 432         return result;
 433     }
 434     if ([khash containsObject:self] == YES) return result;
 435
 436     @try {
 437         id composeView = [self webView];
 438         if ((composeView==NULL) || ([(WebView *)composeView isLoading]==YES) || ([(WebView *)composeView isEditable]==NO)) {
 439             //[self performSelector:@selector(isLoaded) withObject:nil afterDelay:2];
 440             return result;
 441         }
 442
 443         //id backend   = [self backEnd];
 444         //backendSetPreferredEncoding(backend, LF_Encoding_ISO2022JP);
 445         [khash addObject:self];
 446
 447         switch ([self messageType]) {
 448             case 1: // 返信
 449             case 2: // 全員に返信
 450             case 3: // 転送
 451             case 4: // 下書きを開く
 452             case 7: // リダイレクト
 453             case 8: // 差出人に返信
 454                 break;
 455             case 5: // 新規メッセージ
 456             case 14:// 添付ファイルとして返信
 457                 return result;
 458             default:
 459                 NSLog(@"Unknown MessageType: %d", [self messageType]);
 460                 return result;
 461         }
 462
 463         if (0 < fixLetter(self, [self webView], TRUE, TRUE) || checkSubjectOnLoad(self)) {
 464             if ([app operationAtOpen] == 0) {
 465                 NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 466                 [alert addButtonWithTitle:@"変換"];
 467                 NSButton *button = [alert addButtonWithTitle:@"変換しない"];
 468                 button.keyEquivalent = @"\x1b";
 469                 [alert setShowsSuppressionButton:TRUE];
 470                 [alert setMessageText:@"編集前にメッセージを変換しますか？"];
 471                 [alert setInformativeText:@"このメッセージには ISO 2022-JP でエンコードできない文字が含まれています。"];
 472                 [alert setAlertStyle:NSInformationalAlertStyle];
 473                 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.8 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
 474                     [alert beginSheetModalForWindow:[self _windowLF] completionHandler:^(NSModalResponse returnCode){
 475                         if (returnCode == NSAlertFirstButtonReturn) {
 476                             fixSubjectOnLoad(self);
 477                             if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 478                                 fixLetter(self, [self webView], FALSE, TRUE);
 479                             } else if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 480                                        [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 481                                 fixLetter(self, [self composeWebView], FALSE, TRUE);
 482                             }
 483                         } else if (returnCode == NSAlertSecondButtonReturn) {
 484                         }
 485                         if ([[alert suppressionButton] state] == NSOnState) {
 486                             if (returnCode == NSAlertFirstButtonReturn) {
 487                                 [app setOperationAtOpen:1];
 488                             } else if (returnCode == NSAlertSecondButtonReturn) {
 489                                 [app setOperationAtOpen:2];
 490                             }
 491                         }
 492                     }];
 493                 });
 494             } else if ([app operationAtOpen] == 1) {
 495                 fixSubjectOnLoad(self);
 496                 fixLetter(self, [self webView], FALSE, TRUE);
 497                 [[self backEnd] setHasChanges:FALSE];
 498             }
 499         }
 500     }
 501     @catch (NSException * exception) {
 502         NSLog(@"LetterFix: caught %@ %@", [exception name], [exception reason]);
 503     }
 504
 505     return result;
 506 }
 507
 508 void _LF_IMP_finishLoadingEditor(id self, SEL _cmd)
 509 {
 510     [self _LF_finishLoadingEditor];
 511
 512     if ([app isActive] == NO) {
 513         return;
 514     }
 515
 516     @try {
 517         id composeView = [self composeWebView];
 518         if ((composeView==NULL) || ([(WebView *)composeView isLoading]==YES) || ([(WebView *)composeView isEditable]==NO)) {
 519             NSLog(@"composeView NULL!!");
 520             return;
 521         }
 522
 523         switch ([self messageType]) {
 524             case 1: // 返信
 525             case 2: // 全員に返信
 526             case 3: // 転送
 527             case 4: // 下書きを開く
 528             case 7: // リダイレクト
 529             case 8: // 差出人に返信
 530                 break;
 531             case 5: // 新規メッセージ
 532             case 14:// 添付ファイルとして返信
 533                 return;
 534             default:
 535                 NSLog(@"Unknown MessageType: %d", [self messageType]);
 536                 return;
 537         }
 538
 539         if (0 < fixLetter(self, composeView, TRUE, TRUE) || checkSubjectOnLoad(self)) {
 540             if ([app operationAtOpen] == 0) {
 541                 NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 542                 [alert addButtonWithTitle:@"変換"];
 543                 NSButton *button = [alert addButtonWithTitle:@"変換しない"];
 544                 button.keyEquivalent = @"\x1b";
 545                 [alert setShowsSuppressionButton:TRUE];
 546                 [alert setMessageText:@"編集前にメッセージを変換しますか？"];
 547                 [alert setInformativeText:@"このメッセージには ISO 2022-JP でエンコードできない文字が含まれています。"];
 548                 [alert setAlertStyle:NSInformationalAlertStyle];
 549                 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
 550                     [alert beginSheetModalForWindow:[self _windowLF] completionHandler:^(NSModalResponse returnCode){
 551                         if (returnCode == NSAlertFirstButtonReturn) {
 552                             fixSubjectOnLoad(self);
 553                             if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 554                                 [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 555                                 fixLetter(self, [self composeWebView], FALSE, TRUE);
 556                             }
 557                         } else if (returnCode == NSAlertSecondButtonReturn) {
 558                         }
 559                         if ([[alert suppressionButton] state] == NSOnState) {
 560                             if (returnCode == NSAlertFirstButtonReturn) {
 561                                 [app setOperationAtOpen:1];
 562                             } else if (returnCode == NSAlertSecondButtonReturn) {
 563                                 [app setOperationAtOpen:2];
 564                             }
 565                         }
 566                     }];
 567                 });
 568             } else if ([app operationAtOpen] == 1) {
 569                 fixSubjectOnLoad(self);
 570                 fixLetter(self, composeView, FALSE, TRUE);
 571                 [[self backEnd] setHasChanges:FALSE];
 572             }
 573         }
 574     }
 575     @catch (NSException * exception) {
 576         NSLog(@"LetterFix: caught %@ %@", [exception name], [exception reason]);
 577     }
 578
 579     return;
 580 }
 581
 582 void _LF_IMP_send_(id self, SEL _cmd, id arg1)
 583 {
 584     if ([app isActive] == NO) {
 585         [self _LF_send: arg1];
 586         return;
 587     }
 588
 589     id composeView;
 590     if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 591         composeView = [self webView];
 592     } else if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 593                [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 594         composeView = [self composeWebView];
 595     } else {
 596         [self _LF_send: arg1];
 597         return;
 598     }
 599
 600     backendSetPreferredEncoding([self backEnd], LF_Encoding_ISO2022JP);
 601     if (0 < fixLetter(self, composeView, TRUE, FALSE)) {
 602         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 603         [alert addButtonWithTitle:@"変換して送信"];
 604         NSButton *button = [alert addButtonWithTitle:@"キャンセル"];
 605         button.keyEquivalent = @"\x1b";
 606         [alert addButtonWithTitle:@"変換せずに送信"];
 607         [alert addButtonWithTitle:@"変換のみ"];
 608         [alert setMessageText:@"メッセージを変換して送信しますか？"];
 609         [alert setInformativeText:@"送信しようとしているメッセージには ISO 2022-JP でエンコードできない文字が含まれています。"];
 610         [alert setAlertStyle:NSInformationalAlertStyle];
 611         [alert beginSheetModalForWindow:[self _windowLF] completionHandler:^(NSModalResponse returnCode) {
 612             if (returnCode == NSAlertFirstButtonReturn) {
 613                 if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 614                     fixLetter(self, [self webView], FALSE, FALSE);
 615                 } else if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 616                            [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 617                     fixLetter(self, [self composeWebView], FALSE, FALSE);
 618                 }
 619                 if (backendGetPreferredEncoding([self backEnd]) != LF_Encoding_ISO2022JP) backendSetPreferredEncoding([self backEnd], LF_Encoding_ISO2022JP);
 620                 [[alert window] orderOut:arg1];
 621                 if (([app isCheckSubject] != NO) && checkSubject(self)) _LF_alertSubject(self, _cmd, arg1);
 622                 else [self _LF_send: arg1];
 623             } else if (returnCode == NSAlertSecondButtonReturn) {
 624                 // Cancel
 625             } else if (returnCode == NSAlertThirdButtonReturn) { // 変換せずに送信
 626                 if (backendGetPreferredEncoding([self backEnd]) == LF_Encoding_ISO2022JP) {
 627                     backendSetPreferredEncoding([self backEnd], LF_Encoding_Auto); // ISO2022JPのままだとISO2022JP-2とかで送ってしまう
 628                 }
 629                 [[alert window] orderOut:arg1];
 630                 [self _LF_send: arg1];
 631             } else if (returnCode == (NSAlertThirdButtonReturn + 1)) { // 変換のみ
 632                 if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 633                     fixLetter(self, [self webView], FALSE, FALSE);
 634                 } else if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 635                            [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 636                     fixLetter(self, [self composeWebView], FALSE, FALSE);
 637                 }
 638                 if (backendGetPreferredEncoding([self backEnd]) != LF_Encoding_ISO2022JP) backendSetPreferredEncoding([self backEnd], LF_Encoding_ISO2022JP);
 639             }
 640         }];
 641     } else if (([app isCheckSubject] != NO) && checkSubject(self)) {
 642         _LF_alertSubject(self, _cmd, arg1);
 643     } else {
 644         [self _LF_send: arg1];
 645     }
 646 }
 647
 648 void _LF_alertSubject(id self, SEL _cmd, id arg1)
 649 {
 650     NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 651     [alert addButtonWithTitle:@"変換して送信"];
 652     NSButton *button = [alert addButtonWithTitle:@"キャンセル"];
 653     button.keyEquivalent = @"\x1b";
 654     [alert addButtonWithTitle:@"変換せずに送信"];
 655     [alert addButtonWithTitle:@"変換のみ"];
 656     [alert setMessageText:@"件名を変換して送信しますか？"];
 657     [alert setInformativeText:@"送信するメッセージの件名には ISO 2022-JP でエンコードできない文字が含まれています。"];
 658     [alert setAlertStyle:NSInformationalAlertStyle];
 659     [alert beginSheetModalForWindow:[self _windowLF] completionHandler:^(NSModalResponse returnCode) {
 660         if (returnCode == NSAlertFirstButtonReturn) {
 661             fixHeader(self);
 662             [[alert window] orderOut:arg1];
 663             [self _LF_send: arg1];
 664         } else if (returnCode == NSAlertSecondButtonReturn) {
 665             // Cancel
 666         } else if (returnCode == NSAlertThirdButtonReturn) {
 667             [[alert window] orderOut:arg1];
 668             [self _LF_send: arg1];
 669         } else if (returnCode == (NSAlertThirdButtonReturn + 1)) {
 670             fixHeader(self);
 671         }
 672     }];
 673 }
 674
 675 void _LF_IMP_saveDocument_(id self, SEL _cmd, id arg1)
 676 {
 677     id composeView;
 678     if ([app willCheckOnSave] && ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite)) {
 679         composeView = [self webView];
 680     } else if ([app willCheckOnSave] &&
 681                ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 682                 [app ver] == LF_HighSierra|| [app ver] == LF_Mojave)) {
 683         composeView = [self composeWebView];
 684     } else {
 685         [self _LF_saveDocument: arg1];
 686         return;
 687     }
 688
 689     if (([app isActive] != NO) && ([check_at_save containsObject:self]==NO) &&(0 < fixLetter(self, composeView, TRUE, FALSE))) {
 690         NSAlert *alert = [[[NSAlert alloc] init] autorelease];
 691         [alert addButtonWithTitle:@"変換"];
 692         NSButton *button = [alert addButtonWithTitle:@"変換しない"];
 693         button.keyEquivalent = @"\x1b";
 694         [alert setMessageText:@"保存前にメッセージを変換しますか？"];
 695         [alert setInformativeText:@"このメッセージには ISO 2022-JP でエンコードできない文字が含まれています。\n"
 696          @"変換しないを選択した場合、メールの送信またはウインドウを開き直すまでエンコーディングの確認を行いません。"];
 697         [alert setAlertStyle:NSWarningAlertStyle];
 698         [alert beginSheetModalForWindow:[self _windowLF] completionHandler:^(NSModalResponse returnCode) {
 699             if (returnCode == NSAlertFirstButtonReturn) {
 700                 if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 701                     fixLetter(self, [self webView], FALSE, FALSE);
 702                 } else if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 703                            [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 704                     fixLetter(self, [self composeWebView], FALSE, FALSE);
 705                 }
 706             } else if (returnCode == NSAlertSecondButtonReturn) {
 707                 [check_at_save addObject:self];
 708             }
 709             [[alert window] orderOut:arg1];
 710             [self _LF_saveDocument: (id)arg1];
 711         }];
 712     } else {
 713         [self _LF_saveDocument: arg1];
 714     }
 715 }
 716
 717 void _LF_IMP_animationCompleted(id self, SEL _cmd)
 718 {
 719     [self performSelector:@selector(isLoaded) withObject:nil afterDelay:0.5];
 720     [self _LF_animationCompleted];
 721 }
 722
 723 NSWindow *_LF_IMP_window(id self, SEL _cmd)
 724 {
 725     if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite || [app ver] == LF_ElCapitan ) {
 726         return [self window];
 727     } else if ([app ver] == LF_Sierra || [app ver] == LF_HighSierra||
 728                [app ver] == LF_Mojave) {
 729         return [[self view] window];
 730     }
 731     return nil;
 732 }
 733
 734 #define MVMailBundle        (NSClassFromString(@"MVMailBundle"))
 735
 736 @implementation LetterFix
 737 + (void) initialize
 738 {
 739     class_setSuperclass([self class], MVMailBundle); // depricated function 10.5対応のためこのワーニングだけは消せません
 740     [super initialize];
 741     [self registerBundle];
 742
 743     khash = [[NSMutableArray alloc] initWithCapacity:1];
 744     check_at_save = [[NSMutableArray alloc] initWithCapacity:1];
 745
 746     app = [[LFApp alloc] init];
 747
 748     Class editorClass = nil;
 749     if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 750         editorClass = NSClassFromString(@"DocumentEditor");
 751     } else if ([app ver] == LF_ElCapitan || [app ver] == LF_Sierra ||
 752                [app ver] == LF_HighSierra|| [app ver] == LF_Mojave) {
 753         editorClass = NSClassFromString(@"ComposeViewController");
 754     } else {
 755         return;
 756     }
 757     class_addMethod(editorClass, @selector(_windowLF), (IMP)_LF_IMP_window, "@@:");
 758
 759     //
 760     // swizzling method
 761     //
 762     if ([app ver] == LF_Mavericks || [app ver] == LF_Yosemite) {
 763         swizzlingMethod(editorClass, @selector(isLoaded), @selector(_LF_isLoaded), (IMP)_LF_IMP_isLoaded);
 764         swizzlingMethod(editorClass, @selector(_animationCompleted), @selector(_LF_animationCompleted), (IMP)_LF_IMP_animationCompleted);
 765     } else if ([app ver] == LF_ElCapitan) {
 766         swizzlingMethod(editorClass, @selector(finishLoadingEditor), @selector(_LF_finishLoadingEditor), (IMP)_LF_IMP_finishLoadingEditor);
 767     } else if ([app ver] == LF_Sierra || [app ver] == LF_HighSierra || [app ver] == LF_Mojave) {
 768         swizzlingMethod(editorClass, @selector(_finishLoadingEditor), @selector(_LF_finishLoadingEditor), (IMP)_LF_IMP_finishLoadingEditor);
 769     }
 770     swizzlingMethod(editorClass, @selector(saveDocument:), @selector(_LF_saveDocument:), (IMP)_LF_IMP_saveDocument_);
 771     swizzlingMethod(editorClass, @selector(send:), @selector(_LF_send:), (IMP)_LF_IMP_send_);
 772     //
 773     // end of swizzling method
 774     //
 775
 776     NSLog(@"LetterFix Plugin (version %s/%ld) is registered.", LETTERFIX_VERSION, (unsigned long int)[app verm]);
 777 }
 778 @end