HTMLソースコードからPDFを生成します。すべてのテキストを 1 行ずつ読みました。ドキュメント全体からすべての日付を取得する必要があります。正規表現を使用してすべての日付を取得します。問題は、任意の日付形式 (dd-MM-yyyy または yyyy-mm-dd または dd/mm/yyyy) の文字列を特定の日付形式 (dd MMMM yyyy) に変換する必要があることです。私はこれで立ち往生しています。どんな助けでも素晴らしいでしょう。含まれている日付形式の文字列を読み取る必要があります。これが私のコードです...
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fileDocumentDirectorySavePath = [documentsDirectory stringByAppendingPathComponent:@"Sample.txt"];
NSFileManager *fm = [NSFileManager defaultManager];
if (![fm fileExistsAtPath:fileDocumentDirectorySavePath])
[fm copyItemAtPath:fileBundlePath toPath:fileDocumentDirectorySavePath error:nil];
NSString* fileContents =
[NSString stringWithContentsOfFile:fileDocumentDirectorySavePath
encoding:NSUTF8StringEncoding error:nil];
// first, separate by new line
NSArray* allLinedStrings =
[fileContents componentsSeparatedByCharactersInSet:
[NSCharacterSet newlineCharacterSet]];
NSString* strsInOneLine;
NSArray *DateArray;
// NSString * regularExpression = @"([1-9]|0[1-9]|[12][0-9]|3[01])(st|nd|rd|th) \\w* (19|20)\\d\\d |(\\d{2}-\\d{2}-\\d{4})|(\\d{4}-\\d{2}-\\d{2})|(\\d{2}/\\d{2}/\\d{4})|(\\d{4}/\\d{2}/\\d{2})";
NSString * regularExpression = @"([1-9]|0[1-9]|[12][0-9]|3[01])(st|nd|rd|th) \\w* (19|20)\\d\\d |(\\d{2}-\\d{2}-\\d{4})|(\\d{4}-\\d{2}-\\d{2})|(\\d{2}/\\d{2}/\\d{4})|(\\d{4}/\\d{2}/\\d{2})|((31(?!\\ (Feb(ruary)?|Apr(il)?|June?|(Sep(?=\\b|t)t?|Nov)(ember)?)))|((30|29)(?!\\ Feb(ruary)?))|(29(?=\\Feb(ruary)?\\ (((1[6-9]|[2-9]\\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)))))|(0?[1-9])|1\\d|2[0-8])\\ (Jan(uary)?|Feb(ruary)?|Ma(r(ch)?|y)|Apr(il)?|Ju((ly?)|(ne?))|Aug(ust)?|Oct(ober)?|(Sep(?=\\b|t)t?|Nov|Dec)(ember)?)\\ ((1[6-9]|[2-9]\\d)\\d{2})";
NSError *error = NULL;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regularExpression
options:NSRegularExpressionCaseInsensitive
error:&error];
NSString *resultString;
for (int i = 0; i < [allLinedStrings count]; i++) {
strsInOneLine = [allLinedStrings objectAtIndex:i];
DateArray = [regex matchesInString:strsInOneLine options:0 range:NSMakeRange(0, [strsInOneLine length])];
for (NSTextCheckingResult* result in DateArray)
{
resultString = [strsInOneLine substringWithRange:result.range];
NSLog(@"RESULT STRING ===== >%@",resultString);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:@"dd-MM-yyyy"];
NSDate *yourDate = [dateFormatter dateFromString:resultString];
NSLog(@"NEW DATE ====== > %@",yourDate);
NSString *myDateStr;
[dateFormatter setDateFormat:@"dd MMMM yyyy"];
myDateStr = [dateFormatter stringFromDate:yourDate];
NSLog(@"NEW DATE STRING ====== > %@",myDateStr);
}
}