Objective-C

StringBuilder GetBefore

Demonstrates the StringBuilder.GetBefore method.

The GetBefore method was added in Chilkat v9.5.0.77

Objective-C

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

BOOL success = NO;

CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];
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 true, 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 true,
//  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: