(Objective-C) StringBuilder GetBefore

Demonstrates the StringBuilder.GetBefore method.

The GetBefore method was added in Chilkat v9.5.0.77

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#import <CkoStringBuilder.h>
#import <NSString.h>

CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];
BOOL success = [sb Append: @"www.chilkatsoft.com"];

// The GetBefore method returns the contents of the string up to but not including
// the marker string.  If the remove flag is YES, then both the returned string AND
// the marker are removed.
BOOL removeFlag = NO;
NSString *marker = @".";
NSString *substr = [sb GetBefore: marker removeFlag: removeFlag];
NSLog(@"%@%@",@"substr = ",substr);
NSLog(@"%@%@",@"sb contains: ",[sb GetAsString]);

// Output:
// substr = www
// sb contains: www.chilkatsoft.com

removeFlag = YES;
substr = [sb GetBefore: marker removeFlag: removeFlag];
NSLog(@"%@%@",@"substr = ",substr);
NSLog(@"%@%@",@"sb contains: ",[sb GetAsString]);

// Output:
// substr = www
// sb contains: chilkatsoft.com

// If the marker is not found, and the removeFlag is YES,
// then the entire string is returned and the sb is cleared.
// For example:
[sb Clear];
[sb Append: @"111--222--333--444"];
marker = @"--";
removeFlag = YES;
while (([sb.Length intValue] > 0)) {
    substr = [sb GetBefore: marker removeFlag: removeFlag];
    NSLog(@"%@%@%@%@",@"substr = ",substr,@", sb contains: ",[sb GetAsString]);
}

// Output is:
// substr = 111, sb contains: 222--333--444
// substr = 222, sb contains: 333--444
// substr = 333, sb contains: 444
// substr = 444, sb contains: