I have an NSDictionary with utf8 strings as objects. Printing the objects prints the special characters as they should.
But utf8 characters do not get correctly printed out when I convert the dictionary to a string with the description method.
NSDictionary *test = [NSDictionary dictionaryWithObject:#"Céline Dion" forKey:#"bla"];
NSLog(#"%#",[test objectForKey:#"bla"]); // prints fine
NSLog(#"%#",test); // does not print fine, é is replaced by \U00e
NSLog(#"%#",[test description]); // also does not print fine
How can I print the NSDictionary while preserving utf8 characters?
I wouldn't worry about what -description does, it's just for debugging.
Technically, you don't have UTF-8 strings. You have strings (which are Unicode). You don't know what NSString uses internally, and you shouldn't care. If you want a UTF-8 string (like when you're passing to a C API), use -UTF8String.
There is a way, but I can't check it at the moment:
NSString *decodedString = [NSString stringWithUTF8String:[[test description] cStringUsingEncoding:[NSString defaultCStringEncoding]]];
NSLog(#"%#",decodedString);
Related
i have star micronics and im implementing SDK in my app, but i cant print the € symbol
[mutableData appendData:[#"\x1b\x1d\x74\x04 123" dataUsingEncoding:NSMacOSRomanStringEncoding allowLossyConversion:YES]];
but print other character
also try with
[mutableData appendData:[#"\xE2\x82\xac\r\n 123" dataUsingEncoding: NSUTF8StringEncoding allowLossyConversion:YES]];
someone knows what is the code to print it?
This will do the trick:
builder is your ISCBBuilder variable.
builder.append(.CP858)
builder.appendByte(0xd5)
NSString in Objective-C is internally encoded as UTF-16, and the euro symbol has code 0x20AC. So first you need to define your string like so:
NSString *euroSymbol1 = #"\u20AC";
NSString *euroSymbol2 = #"€"; // same as euroSymbol1
if ([euroSymbol1 isEqualToString:euroSymbol2])
NSLog(#"equivalent"); // this is printed
NSString *price = [NSString stringWithFormat:#"%# %.2f", euroSymbol1, 123.45];
NSLog(#"%#", price); // prints: "€ 123.45"
Note that if you just write "€" the compiler is smart to re-encode your source code encoding to the NSString encoding, so it is trivial to read.
Then you need to understand what encoding does your printer support. If it supports Unicode, you should try it first, because it definitely contains the euro symbol. Note that the whole mutableData must be in the same encoding, so if you have appended other strings before this one, you need to make sure that all of them use the same encoding (for example NSUTF8StringEncoding).
If you need to use NSMacOSRomanStringEncoding, then the euro symbol might not be supported (see this reply), although here in the table you can still see it under the code 219.
I have a strange problem encoding my String
For example:
NSString *str = #"\u0e09\u0e31\u0e19\u0e23\u0e31\u0e01\u0e04\u0e38\u0e13";
NSString *utf = [str stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog("utf: %#", utf);
This worked perfectly in log
utf: ฉันรักคุณ
But, when I try using my string that I parsed from JSON with the same string:
//str is string parse from JSON
NSString *str = [spaces stringByReplacingOccurrencesOfString:#"U" withString:#"u"];
NSLog("str: %#, str);
NSString *utf = [str stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSLog("utf: %#", utf);
This didn't work in log
str: \u0e09\u0e31\u0e19\u0e23\u0e31\u0e01\u0e04\u0e38\u0e13
utf: \u0e09\u0e31\u0e19\u0e23\u0e31\u0e01\u0e04\u0e38\u0e13
I have been finding the answer for hours but still have no clue
Any would be very much appreciated! Thanks!
The string returned by JSON is actually different - it contains escaped backslashes (for each "\" you see when printing out the JSON string, what it actually contains is #"\").
In contrast, your manually created string already consists of "ฉันรักคุณ" from the beginning. You do not insert backslash characters - instead, #"\u0e09" (et. al.) is a single code point.
You could replace this line
NSString *utf = [str stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
with this line
NSString *utf = str;
and your example output would not change. The stringByReplacingPercentEscapesUsingEncoding: refers to a different kind of escaping. See here about percent encoding.
What you need to actually do, is parse the string for string representations of unicode code points. Here is a link to one potential solution: Using Objective C/Cocoa to unescape unicode characters. However, I would advise you to check out the JSON library you are using (if you are using one) - it's likely that they provide some way to handle this for you transparently. E.g. JSONkit does.
I've got a problem with the following code:
NSString *strValue=#"你好";
char temp[200];
strcpy(temp, [strValue UTF8String]);
printf("%s", temp);
NSLog(#"%s", temp);
in the first line of the codes, two Chinese characters are double quoted. The problem is printf function can display the Chinese characters properly, but NSLog can't.
Thanks to all. I figured out a solution for this problem. Foundation uses UTF-16 by default, so in order to use NSLog to output the c string in the example, I have to use cStringUsingEncoding to get UTF-16 c string and use %S to replace %s.
NSString *strValue=#"你好";
char temp[200];
strcpy(temp, [strValue UTF8String]);
printf("%s", temp);
strcpy(temp, [strValue cStringUsingEncoding:NSUTF16LittleEndianStringEncoding]);
NSLog(#"%S", temp);
NSLog's %s format specifier is in the system encoding, which seems to always be MacRoman and not unicode, so it can only display characters in MacRoman encoding. Your best option with NSLog is just to use the native object format specifier %# and pass the NSString directly instead of converting it to a C String. If you only have a C string and you want to use NSLog to display a message instead of printf or asl, you will have to do something like Don suggests in order to convert the string to an NSString object first.
So, all of these should display the expected string:
NSString *str = #"你好";
const char *cstr = [str UTF8String];
NSLog(#"%#", str);
printf("%s\n", cstr);
NSLog(#"%#", [NSString stringWithUTF8String:cstr]);
If you do decide to use asl, note that while it accepts strings in UTF8 format and passes the correct encoding to the syslog daemon (so it will show up properly in the console), it encodes the string for visual encoding when displaying to the terminal or logging to a file handle, so non-ASCII values will be displayed as escaped character sequences.
My guess is that NSLog assumes a different encoding for 8-bit C-strings than UTF-8, and it may be one that doesn't support Chinese characters. Awkward as it is, you might try this:
NSLog(#"%#", [NSString stringWithCString: temp encoding: NSUTF8StringEncoding]);
I know you are probably looking for an answer that will help you understand what's going on.
But this is what you could do to solve your problem right now:
NSLog(#"%#", strValue);
# define NSLogUTF8(a,b) NSLog(a,[NSString stringWithCString:[[NSString stringWithFormat:#"%#",b] cStringUsingEncoding:NSUTF8StringEncoding] encoding:NSNonLossyASCIIStringEncoding])
#define NSLogUTF8Ex(a,b) NSLog(a,[MLTool utf8toNString:[NSString stringWithFormat:#"%#",b]])
+(NSString*)utf8toNString:(NSString*)str{
NSString* strT= [str stringByReplacingOccurrencesOfString:#"\\U" withString:#"\\u"];
//NSString *strT = [strTemp mutableCopy];
CFStringRef transform = CFSTR("Any-Hex/Java");
CFStringTransform((__bridge CFMutableStringRef)strT, NULL, transform, YES);
return strT;
}
I have a dictionary of NSData values where I am passing the different values into their variables that I later use to display in tableviewcells etc.
However I have some international characters that are not displaying correctly and I would like to encode the data I am passing to a NSString but I am not sure how to do it because of the circumstances.
This is what I am currently doing.
manString = [dict valueForKey:#"MAN"];
The dict contains all of the data that i am using. any help would be appreciated
You can do this:
NSString* string = [[NSString alloc] initWithData:[dict valueForKey:#"MAN"]
encoding:NSStringEncoding];
Where encoding should be a value from NSStringEncoding enum, you can find it in NSString.h, just choose encoding you need, usually it is NSUTF8StringEncoding, but I guess not in your case.
NSString * string = #"االْحَمْدُ لِلَّهِ رَبِّ الْعَالَمِينَ";
const char *c = [string cStringUsingEncoding:NSUTF8StringEncoding];
NSString *newString = [[NSString alloc]initWithCString:c encoding:NSISOLatin1StringEncoding];
NSLog(#"%#",newString);
// NSString * staticEncodedString = #"اÙÙØÙÙ Ùد٠ÙÙÙÙÙÙ٠رÙبÙ٠اÙÙعÙاÙÙÙ ÙÙÙÙ";
const char *cvvv = [newString cStringUsingEncoding:NSISOLatin1StringEncoding];
NSString *newStringV = [[NSString alloc]initWithCString:cvvv encoding:NSUTF8StringEncoding];
NSLog(#"%#",newStringV);
Why is it direct commented Encoded string not converting to Arabic?
When i hardcode the Arabic it encodes and then decodes correctly, but why can't static encoded string not readable in arabic?
Thanks for your reply Jake. Yes I loose data while decoding the "staticEncodedString".But All I want is to decode the following string back to Arabic.
NSString * staticEncodedString = #"اÙÙØÙÙ Ùد٠ÙÙÙÙÙÙ٠رÙبÙ٠اÙÙعÙاÙÙÙ ÙÙÙÙ";
The encode is in ANSI i think change it to UTF-8 from any tool.
Use Notepad++ to apply for example and then you can use encode it within sqlite or ios.
Latin1 can not represent the Arabic characters, so you can not encode that string to Latin1. Arabic belongs to the Latin4 character set. The method cStringUsingEncoding will return null if the string cannot losslessly be encoded to the specified encoding.
Why would you want to encode an arabic string to LatinX? UTF-8 will most likely be the best representation since it uses only standard characters and a straightforward approach with no headaches. It may take a bit more bytes than Latin4, but in most cases it will be worth it.
Converting to Latin1 will make you lose your text.