WebSVN – HelenOS – Diff – /trunk/tools/xstruct.py


#
# 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
   
    comment = False
    for token in tokens[1:]:
        if (comment):
            if (token == "*/"):
                comment = False
            continue
       
        if (token == "/*"):
            comment = True
        elif (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)
 
def little_padding(length):
    return struct.pack("<" + ("%d" % length) + "x")
 

Rev 3259	Rev 3260
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

Subversion Repositories HelenOS

(root)/trunk/tools/xstruct.py – Rev 3259 → 3260