InternetMessages/ATContentDispositionFieldBody.m at master · Lessercomputer/InternetMessages · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
//
//  ATContentDispositionFieldBody.m
//  ATMail
//
//  Created by 高田　明史 on 07/11/10.
//  Copyright 2007 __MyCompanyName__. All rights reserved.
//

#import "ATContentDispositionFieldBody.h"
#import "ATMIMETokenScanner.h"


@implementation ATContentDispositionFieldBody

- (id)initWith:(NSString *)aString
{
	ATMIMETokenScanner *aScanner = [ATMIMETokenScanner scannerWith:aString];
	BOOL anInitializationSucceed = NO;

	[super init];

	dispositionType = [[self scanDispositionTypeFrom:aScanner] retain];

	if (dispositionType)
	{
		parameters = [[self scanDispositionParametersFrom:aScanner] retain];

		[aScanner skipCFWS];

		if ([aScanner isAtEnd])
			anInitializationSucceed = YES;
	}

	if (!anInitializationSucceed)
	{
		[self release];
		self = nil;
	}

	return self;
}

- (void)dealloc
{
	[dispositionType release];
	[parameters release];

	[super dealloc];
}

- (NSString *)dispositionType
{
	return dispositionType;
}

- (NSMutableDictionary *)parameters
{
	return parameters;
}

- (NSString *)filename
{
	return [[self parameters] objectForKey:@"filename"];
}

- (NSString *)stringValue
{
	return [NSString stringWithFormat:@"%@; %@", [self dispositionType], [self parameters]];
}

- (NSString *)scanDispositionTypeFrom:(ATMIMETokenScanner *)aScanner
{
	NSString *aDispositionType = nil;

	[aScanner skipCFWS];

	[aScanner scanString:@"inline" intoString:&aDispositionType] || [aScanner scanString:@"attachment" intoString:&aDispositionType]
		|| [aScanner scanExtensionTokenInto:&aDispositionType];

	return aDispositionType;
}

- (NSMutableDictionary *)scanDispositionParametersFrom:(ATMIMETokenScanner *)aScanner
{
	NSMutableDictionary *aContentDispositionParameterDictionary = [NSMutableDictionary dictionary];
	NSString *aName = nil, *aValue = nil;

	while ([self scanDispositionParmNameInto:&aName valueInto:&aValue from:aScanner])
	{
		[aContentDispositionParameterDictionary setObject:aValue forKey:[aName lowercaseString]];
	}

	return aContentDispositionParameterDictionary;
}

- (BOOL)scanDispositionParmNameInto:(NSString **)aName valueInto:(NSString **)aValue from:(ATMIMETokenScanner *)aScanner
{
	NSString *aReturningName = nil, *aReturningValue = nil;
	BOOL aParameterFound = NO;

	[aScanner skipCFWS];

	if ([aScanner scanString:@";" intoString:nil])
	{
		[aScanner skipCFWS];

		aParameterFound = [self scanFilenameParmNameInto:&aReturningName valueInto:&aReturningValue from:aScanner] || [aScanner scanParameterInto:&aReturningName into:&aReturningValue];
	}

	if (aParameterFound)
	{
		*aName = aReturningName;
		*aValue = aReturningValue;

		return YES;
	}
	else
		return NO;
}

- (BOOL)scanFilenameParmNameInto:(NSString **)aName valueInto:(NSString **)aValue from:(ATMIMETokenScanner *)aScanner
{
	NSString *aReturningName = nil, *aReturningValue = nil;

	if ([aScanner scanString:@"filename" intoString:&aReturningName])
	{
		[aScanner skipCFWS];

		if ([aScanner scanString:@"=" intoString:nil])
		{
			[aScanner skipCFWS];

			if ([aScanner scanValueInto:&aReturningValue])
			{
				*aName = aReturningName;
				*aValue = aReturningValue;

				return YES;
			}
		}
	}

	return NO;
}

@end