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1 | # |
1 | # |
2 | # Copyright (c) 2008 Martin Decky |
2 | # Copyright (c) 2008 Martin Decky |
3 | # All rights reserved. |
3 | # All rights reserved. |
4 | # |
4 | # |
5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
7 | # are met: |
7 | # are met: |
8 | # |
8 | # |
9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
13 | # documentation and/or other materials provided with the distribution. |
13 | # documentation and/or other materials provided with the distribution. |
14 | # - The name of the author may not be used to endorse or promote products |
14 | # - The name of the author may not be used to endorse or promote products |
15 | # derived from this software without specific prior written permission. |
15 | # derived from this software without specific prior written permission. |
16 | # |
16 | # |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # |
27 | # |
28 | """ |
28 | """ |
29 | Convert descriptive structure definitions to struct formats |
29 | Convert descriptive structure definitions to struct formats |
30 | """ |
30 | """ |
31 | 31 | ||
32 | import struct |
32 | import struct |
33 | 33 | ||
34 | def convert(definition): |
34 | def convert(definition): |
35 | "Convert structure defition to struct format" |
35 | "Convert structure defition to struct format" |
36 | 36 | ||
37 | tokens = definition.split(None) |
37 | tokens = definition.split(None) |
38 | 38 | ||
39 | # Initial byte order tag |
39 | # Initial byte order tag |
40 | struct = { |
40 | struct = { |
41 | "little:": lambda: "<", |
41 | "little:": lambda: "<", |
42 | "big:": lambda: ">", |
42 | "big:": lambda: ">", |
43 | "network:": lambda: "!" |
43 | "network:": lambda: "!" |
44 | }[tokens[0]]() |
44 | }[tokens[0]]() |
45 | 45 | ||
46 | # Member tags |
46 | # Member tags |
47 | 47 | ||
- | 48 | comment = False |
|
48 | for token in tokens[1:]: |
49 | for token in tokens[1:]: |
- | 50 | if (comment): |
|
- | 51 | if (token == "*/"): |
|
- | 52 | comment = False |
|
- | 53 | continue |
|
- | 54 | ||
- | 55 | if (token == "/*"): |
|
- | 56 | comment = True |
|
49 | if (token[0:5] == "char["): |
57 | elif (token[0:5] == "char["): |
50 | size = token[5:].split("]")[0] |
58 | size = token[5:].split("]")[0] |
51 | struct += ("%d" % int(size)) + "s" |
59 | struct += ("%d" % int(size)) + "s" |
52 | else: |
60 | else: |
53 | struct += { |
61 | struct += { |
54 | "uint8_t": lambda: "B", |
62 | "uint8_t": lambda: "B", |
55 | "uint16_t": lambda: "H", |
63 | "uint16_t": lambda: "H", |
56 | "uint32_t": lambda: "L", |
64 | "uint32_t": lambda: "L", |
57 | "uint64_t": lambda: "Q", |
65 | "uint64_t": lambda: "Q", |
58 | 66 | ||
59 | "int8_t": lambda: "b", |
67 | "int8_t": lambda: "b", |
60 | "int16_t": lambda: "h", |
68 | "int16_t": lambda: "h", |
61 | "int32_t": lambda: "l", |
69 | "int32_t": lambda: "l", |
62 | "int64_t": lambda: "q" |
70 | "int64_t": lambda: "q" |
63 | }[token]() |
71 | }[token]() |
64 | 72 | ||
65 | return struct |
73 | return struct |
66 | 74 | ||
67 | def little_string(string): |
75 | def little_string(string): |
68 | return struct.pack("<" + ("%d" % len(string)) + "s", string) |
76 | return struct.pack("<" + ("%d" % len(string)) + "s", string) |
- | 77 | ||
- | 78 | def little_padding(length): |
|
- | 79 | return struct.pack("<" + ("%d" % length) + "x") |
|
69 | 80 |