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(Objective-C) Generating Random ASCII Strings

Demonstrates how to generate random us-ascii strings.

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

#import <CkoGlobal.h>
#import <CkoPrng.h>

// All Chilkat classes can be unlocked at once at the beginning of a program
// by calling UnlockBundle.  It requires a Bundle unlock code.
CkoGlobal *chilkatGlob = [[CkoGlobal alloc] init];
BOOL success = [chilkatGlob UnlockBundle: @"Anything for 30-day trial."];
if (success != YES) {
    NSLog(@"%@",chilkatGlob.LastErrorText);
    return;
}

CkoPrng *fortuna = [[CkoPrng alloc] init];

BOOL bDigits;
BOOL bLowercase;
BOOL bUppercase;

// Generate random strings having only lowercase chars (a-z)
// Disallow digits and uppercase and only allow lowercase
bDigits = NO;
bUppercase = NO;
bLowercase = YES;

int i;

NSLog(@"%@",@"-- only lowercase alpha (a-z)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}

// Allow both lowercase and uppercase alpha chars
bUppercase = YES;
NSLog(@"%@",@"-- lower and uppercase alpha (a-zA-Z)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}

// Allow digits (0-9)
bDigits = YES;
NSLog(@"%@",@"-- digits and lower/uppercase alpha (0-9a-zA-Z)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}

// Allow only digits (0-9)
bUppercase = NO;
bLowercase = NO;
NSLog(@"%@",@"-- only digits (0-9)");
for (i = 1; i <= 10; i++) {
    // Generate 20-character strings.
    NSLog(@"%@",[fortuna RandomString: [NSNumber numberWithInt: 20] bDigits: bDigits bLower: bLowercase bUpper: bUppercase]);
}
 

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