blob: 33b896113ba0ad036c335809e112f57c158f68ff (
plain)
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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
|
The EXIF documentation file D. New
February 12, 2002
The EXIF Package
Abstract
Tcl EXIF extracts and parses EXIF fields from digital images.
Table of Contents
1. Synopsis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Copyrights . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 5
New [Page 1]
EXIF The EXIF Package February 2002
1. Synopsis
package provide exif 1.0
The EXIF package is a recoding of Chris Breeze's Perl package to do
the same thing. This version accepts a channel as input and returns
a serialized array with all the recognised fields parsed out.
There is also a function to obtain a list of all possible field names
that might be present, which is useful in building GUIs that present
such information.
New [Page 2]
EXIF The EXIF Package February 2002
2. Details
array set answer [exif::analyze $channel]
$channel should be an open file handle rewound to the start. It does
not need to be seekable. $channel will be set to binary mode and is
left wherever it happens to stop being parsed, usually at the end of
the file or the start of the image data. You must open and close the
stream yourself. If no error is thrown, the return value is a
serialized array with informative English text about what was found
in the EXIF block. Failure during parsing or I/O throw errors.
set names [exif::fieldnames]
This returns a list of all possible field names. That is, the array
returned by exif::analyze will not contain keys that are not listed
in the return from exif::fieldnames. Of course, if information is
missing in the image file, exif::analyze may not return all the
fields listed in the return from exif::fieldnames. This function is
expected to be primarily useful for building GUIs to display results.
N.B.: Read the implementation of exif::fieldnames before modifying
the implementation of exif::analyze.
New [Page 3]
EXIF The EXIF Package February 2002
3. Copyrights
(c) 2002 Darren New
Hold harmless the author, and any lawful use is allowed.
New [Page 4]
EXIF The EXIF Package February 2002
4. Acknowledgements
This code is a direct translation of version 1.3 of exif.pl by Chris
Breeze. See the source for full headers, references, etc.
New [Page 5]
|
