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Diffstat (limited to 'libs/TouchJSON/Extensions/CDataScanner_Extensions.m')
-rwxr-xr-x | libs/TouchJSON/Extensions/CDataScanner_Extensions.m | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/libs/TouchJSON/Extensions/CDataScanner_Extensions.m b/libs/TouchJSON/Extensions/CDataScanner_Extensions.m new file mode 100755 index 0000000..90dbbda --- /dev/null +++ b/libs/TouchJSON/Extensions/CDataScanner_Extensions.m | |||
@@ -0,0 +1,135 @@ | |||
1 | // | ||
2 | // CDataScanner_Extensions.m | ||
3 | // TouchCode | ||
4 | // | ||
5 | // Created by Jonathan Wight on 12/08/2005. | ||
6 | // Copyright 2005 toxicsoftware.com. All rights reserved. | ||
7 | // | ||
8 | // Permission is hereby granted, free of charge, to any person | ||
9 | // obtaining a copy of this software and associated documentation | ||
10 | // files (the "Software"), to deal in the Software without | ||
11 | // restriction, including without limitation the rights to use, | ||
12 | // copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
13 | // copies of the Software, and to permit persons to whom the | ||
14 | // Software is furnished to do so, subject to the following | ||
15 | // conditions: | ||
16 | // | ||
17 | // The above copyright notice and this permission notice shall be | ||
18 | // included in all copies or substantial portions of the Software. | ||
19 | // | ||
20 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
21 | // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES | ||
22 | // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
23 | // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | ||
24 | // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | ||
25 | // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | ||
26 | // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
27 | // OTHER DEALINGS IN THE SOFTWARE. | ||
28 | // | ||
29 | |||
30 | #import "CDataScanner_Extensions.h" | ||
31 | |||
32 | #define LF 0x000a // Line Feed | ||
33 | #define FF 0x000c // Form Feed | ||
34 | #define CR 0x000d // Carriage Return | ||
35 | #define NEL 0x0085 // Next Line | ||
36 | #define LS 0x2028 // Line Separator | ||
37 | #define PS 0x2029 // Paragraph Separator | ||
38 | |||
39 | @implementation CDataScanner (CDataScanner_Extensions) | ||
40 | |||
41 | - (BOOL)scanCStyleComment:(NSString **)outComment | ||
42 | { | ||
43 | if ([self scanString:@"/*" intoString:NULL] == YES) | ||
44 | { | ||
45 | NSString *theComment = NULL; | ||
46 | if ([self scanUpToString:@"*/" intoString:&theComment] == NO) | ||
47 | [NSException raise:NSGenericException format:@"Started to scan a C style comment but it wasn't terminated."]; | ||
48 | |||
49 | if ([theComment rangeOfString:@"/*"].location != NSNotFound) | ||
50 | [NSException raise:NSGenericException format:@"C style comments should not be nested."]; | ||
51 | |||
52 | if ([self scanString:@"*/" intoString:NULL] == NO) | ||
53 | [NSException raise:NSGenericException format:@"C style comment did not end correctly."]; | ||
54 | |||
55 | if (outComment != NULL) | ||
56 | *outComment = theComment; | ||
57 | |||
58 | return(YES); | ||
59 | } | ||
60 | else | ||
61 | { | ||
62 | return(NO); | ||
63 | } | ||
64 | } | ||
65 | |||
66 | - (BOOL)scanCPlusPlusStyleComment:(NSString **)outComment | ||
67 | { | ||
68 | if ([self scanString:@"//" intoString:NULL] == YES) | ||
69 | { | ||
70 | unichar theCharacters[] = { LF, FF, CR, NEL, LS, PS, }; | ||
71 | NSCharacterSet *theLineBreaksCharacterSet = [NSCharacterSet characterSetWithCharactersInString:[NSString stringWithCharacters:theCharacters length:sizeof(theCharacters) / sizeof(*theCharacters)]]; | ||
72 | |||
73 | NSString *theComment = NULL; | ||
74 | [self scanUpToCharactersFromSet:theLineBreaksCharacterSet intoString:&theComment]; | ||
75 | [self scanCharactersFromSet:theLineBreaksCharacterSet intoString:NULL]; | ||
76 | |||
77 | if (outComment != NULL) | ||
78 | *outComment = theComment; | ||
79 | |||
80 | return(YES); | ||
81 | } | ||
82 | else | ||
83 | { | ||
84 | return(NO); | ||
85 | } | ||
86 | } | ||
87 | |||
88 | - (NSUInteger)lineOfScanLocation | ||
89 | { | ||
90 | NSUInteger theLine = 0; | ||
91 | for (const u_int8_t *C = start; C < current; ++C) | ||
92 | { | ||
93 | // TODO: JIW What about MS-DOS line endings you bastard! (Also other unicode line endings) | ||
94 | if (*C == '\n' || *C == '\r') | ||
95 | { | ||
96 | ++theLine; | ||
97 | } | ||
98 | } | ||
99 | return(theLine); | ||
100 | } | ||
101 | |||
102 | - (NSDictionary *)userInfoForScanLocation | ||
103 | { | ||
104 | NSUInteger theLine = 0; | ||
105 | const u_int8_t *theLineStart = start; | ||
106 | for (const u_int8_t *C = start; C < current; ++C) | ||
107 | { | ||
108 | if (*C == '\n' || *C == '\r') | ||
109 | { | ||
110 | theLineStart = C - 1; | ||
111 | ++theLine; | ||
112 | } | ||
113 | } | ||
114 | |||
115 | NSUInteger theCharacter = current - theLineStart; | ||
116 | |||
117 | NSRange theStartRange = NSIntersectionRange((NSRange){ .location = MAX((NSInteger)self.scanLocation - 20, 0), .length = 20 + (NSInteger)self.scanLocation - 20 }, (NSRange){ .location = 0, .length = self.data.length }); | ||
118 | NSRange theEndRange = NSIntersectionRange((NSRange){ .location = self.scanLocation, .length = 20 }, (NSRange){ .location = 0, .length = self.data.length }); | ||
119 | |||
120 | |||
121 | NSString *theSnippet = [NSString stringWithFormat:@"%@!HERE>!%@", | ||
122 | [[[NSString alloc] initWithData:[self.data subdataWithRange:theStartRange] encoding:NSUTF8StringEncoding] autorelease], | ||
123 | [[[NSString alloc] initWithData:[self.data subdataWithRange:theEndRange] encoding:NSUTF8StringEncoding] autorelease] | ||
124 | ]; | ||
125 | |||
126 | NSDictionary *theUserInfo = [NSDictionary dictionaryWithObjectsAndKeys: | ||
127 | [NSNumber numberWithUnsignedInteger:theLine], @"line", | ||
128 | [NSNumber numberWithUnsignedInteger:theCharacter], @"character", | ||
129 | [NSNumber numberWithUnsignedInteger:self.scanLocation], @"location", | ||
130 | theSnippet, @"snippet", | ||
131 | NULL]; | ||
132 | return(theUserInfo); | ||
133 | } | ||
134 | |||
135 | @end | ||