| 0,0 → 1,68 |
|---|
| # |
| # Copyright (c) 2008 Martin Decky |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| """ |
| Convert descriptive structure definitions to struct formats |
| """ |
| |
| import struct |
| |
| def convert(definition): |
| "Convert structure defition to struct format" |
| |
| tokens = definition.split(None) |
| |
| # Initial byte order tag |
| struct = { |
| "little:": lambda: "<", |
| "big:": lambda: ">", |
| "network:": lambda: "!" |
| }[tokens[0]]() |
| |
| # Member tags |
| |
| for token in tokens[1:]: |
| if (token[0:5] == "char["): |
| size = token[5:].split("]")[0] |
| struct += ("%d" % int(size)) + "s" |
| else: |
| struct += { |
| "uint8_t": lambda: "B", |
| "uint16_t": lambda: "H", |
| "uint32_t": lambda: "L", |
| "uint64_t": lambda: "Q", |
| |
| "int8_t": lambda: "b", |
| "int16_t": lambda: "h", |
| "int32_t": lambda: "l", |
| "int64_t": lambda: "q" |
| }[token]() |
| |
| return struct |
| |
| def little_string(string): |
| return struct.pack("<" + ("%d" % len(string)) + "s", string) |