Tool/Base64Commands.m

/*
     File: Base64Commands.m
 Abstract: Commands for Base64 encode and decode.
  Version: 1.0
 
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 */
 
#import "Base64Commands.h"
 
#import "QCCBase64Encode.h"
#import "QCCBase64Decode.h"
 
#import "ToolCommon.h"
 
@interface Base64EncodeCommand ()
 
@property (nonatomic, assign, readwrite) BOOL   addLineBreaks;
 
@end
 
@implementation Base64EncodeCommand
 
+ (NSString *)commandName
{
    return @"base64-encode";
}
 
+ (NSString *)commandUsage
{
    return [NSString stringWithFormat:@"%@ [-l] file", [self commandName]];
}
 
- (NSString *)commandOptions
{
    return @"l";
}
 
- (void)setOption_l
{
    self.addLineBreaks = YES;
}
 
- (BOOL)validateOptionsAndArguments:(NSArray *)optionsAndArguments
{
    BOOL    success;
    
    success = [super validateOptionsAndArguments:optionsAndArguments];
    if (success && ([self.arguments count] != 1)) {
        success = NO;
    }
    return success;
}
 
- (BOOL)runError:(NSError **)errorPtr
{
    BOOL        success;
    NSData *    fileData;
    
    fileData = [NSData dataWithContentsOfURL:[NSURL fileURLWithPath:self.arguments[0]] options:0 error:errorPtr];
    success = (fileData != nil);
    
    if (success) {
        QCCBase64Encode *   op;
        
        op = [[QCCBase64Encode alloc] initWithInputData:fileData];
        op.addLineBreaks = self.addLineBreaks;
        [[ToolCommon sharedInstance] synchronouslyRunOperation:op];
        fprintf(stdout, "%s", [op.outputString UTF8String]);
    }
    
    return success;
}
 
@end
 
@implementation Base64DecodeCommand
 
+ (NSString *)commandName
{
    return @"base64-decode";
}
 
+ (NSString *)commandUsage
{
    return [NSString stringWithFormat:@"%@ file", [self commandName]];
}
 
- (BOOL)validateOptionsAndArguments:(NSArray *)optionsAndArguments
{
    BOOL    success;
    
    success = [super validateOptionsAndArguments:optionsAndArguments];
    if (success && ([self.arguments count] != 1)) {
        success = NO;
    }
    return success;
}
 
- (BOOL)runError:(NSError **)errorPtr
{
    BOOL        success;
    NSString *  fileString;
    
    fileString = [NSString stringWithContentsOfURL:[NSURL fileURLWithPath:self.arguments[0]] encoding:NSUTF8StringEncoding error:errorPtr];
    success = (fileString != nil);
    
    if (success) {
        QCCBase64Decode *   op;
        
        op = [[QCCBase64Decode alloc] initWithInputString:fileString];
        [[ToolCommon sharedInstance] synchronouslyRunOperation:op];
        if (op.outputData == nil) {
            success = NO;
            if (errorPtr != NULL) {
                *errorPtr = [NSError errorWithDomain:NSCocoaErrorDomain code:NSFileReadCorruptFileError userInfo:nil];
            }
        } else {
            (void) fwrite([op.outputData bytes], [op.outputData length], 1, stdout);
        }
    }
    
    return success;
}
 
@end