Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

executable file 214 lines (191 sloc) 7.773 kb
#!/usr/bin/env python
#
# Copyright (c) 2008-2010 Wind River Systems, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the Lesser GNU General Public License version 2.1 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the Lesser GNU General Public License for more details.
#
# You should have received a copy of the Lesser GNU General Public License
# version 2.1 along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""convert tables.in files to enums, tables, and support code.
Inputs are a type name, prefix, and a list of columns, followed by a list of
names with optional "= value" suffixes, plus optional additional columns.
The names are used to create enums and a table of strings, as well as
to/from lookups between the ids and names. If additional columns are
defined, each column (separated by ", ") is used to create an additional
table of the given name, and a lookup function from ids. Example:
foo: FFF; bar = GOZINTA
hello, yah
world, nope
produces:
typedef enum {
FFF_UNKNOWN = -1,
FFF_MIN = 0,
FFF_NONE = 0,
FFF_HELLO,
FFF_WORLD,
FFF_MAX
} foo_id_t;
extern const char *foo_name(foo_id_t id);
extern foo_id_t foo_id(const char *name);
extern const char *foo_bar(foo_id_t id);
such that foo_name(1) => "hello" and foo_bar(1) => "yah". If there
is an assigned value for a column description, missing column values
yield that value, otherwise they yield "unknown".
Values out of range yield "unknown", and unrecognized names yield the
value -1. Note that the "MAX" value is one more than the highest defined
value. (This is for consistency with C array bounds.)
"""
import glob
import sys
import string
from templatefile import TemplateFile
class DataType:
"""a set of related DataItem objects"""
def __init__(self, path):
"""read the first line of path, then make tuples of the rest"""
source = file(path)
definition = source.readline().rstrip()
self.name, qualifiers = string.split(definition, ': ', 2)
if '; ' in qualifiers:
self.prefix, columns = string.split(qualifiers, '; ')
else:
self.prefix = qualifiers
columns = []
if len(columns):
self.columns = []
columns = string.split(columns, ', ')
for col in columns:
if "=" in col:
name, default = string.split(col, ' = ')
else:
name, default = col, ""
self.columns.append({"name":name, "value":default})
else:
self.columns = []
self.data = []
self.comments = []
for line in source.readlines():
item = {}
if line.startswith('#'):
self.comments.append(line.rstrip().replace('#', ''))
continue
# first entry on the line is the "real" name/id, following hunks
# are additional columns
cols = string.split(line.rstrip(), ', ')
item["name"] = cols.pop(0)
item["upper"] = item["name"].replace('-', '_').upper()
column_list = []
for col in self.columns:
if len(cols) > 0:
column_list.append({"name":col["name"], "value":cols.pop(0)})
else:
column_list.append({"name":col["name"], "value":col["default"]})
item["cols"] = column_list
self.data.append(item)
def __getitem__(self, key):
"""Make this object look like a dict for Templates to use"""
attr = getattr(self, key)
if callable(attr):
return attr()
else:
return attr
def __repr__(self):
column = 0
out = ""
out += "type: %s_t" % self.name
out += " (prefix '%s_ENUM')\n" % self.prefix
for col in self.columns:
out += " extra column: %s (default '%s')\n" % (col["name"], col["value"])
out += " "
for item in self.data:
column = column + 1
if column > 4 and column % 4 == 1:
out += "\n "
out += "%-19s" % item["name"]
# for col in item["cols"]:
# out += "\t%s(%s)\n" % (col["name"], col["value"])
return out
def comment(self):
if len(self.comments):
return '/*' + '\n *'.join(self.comments) + ' */\n'
else:
return ''
def names(self):
return ',\n\t'.join('"%s"' % x["name"] for x in self.data)
def enums(self):
return ',\n\t'.join('%s_%s' % (self.prefix, x["upper"]) for x in self.data)
def column_names(self):
decl_lines = []
column = 0
for col in self.columns:
decl_lines.append("static const char *%s_id_to_%s[] = {" % (self.name, col["name"]))
decl_lines.append('\t"%s",' % col["value"])
for item in self.data:
decl_lines.append('\t"%s",' % item["cols"][column]["value"])
decl_lines.append('\tNULL')
decl_lines.append("};")
column = column + 1
return '\n'.join(decl_lines)
def column_funcs(self):
decl_lines = []
for col in self.columns:
decl_lines.append('extern const char *')
decl_lines.append('pseudo_%s_%s(pseudo_%s_t id) {' %
(self.name, col["name"], self.name))
decl_lines.append('\tif (id < 0 || id >= %s_MAX)' % (self.prefix))
decl_lines.append('\t\treturn "%s";' % col["value"])
decl_lines.append('\treturn %s_id_to_%s[id];' %
(self.name, col["name"]))
decl_lines.append('}')
return '\n'.join(decl_lines)
def column_protos(self):
decl_lines = []
for col in self.columns:
decl_lines.append('extern const char *pseudo_%s_%s(pseudo_%s_t id);' %
(self.name, col["name"], self.name))
return '\n'.join(decl_lines)
def main():
"""Read in function defintions, write out files based on templates."""
datatypes = []
templates = []
# error checking helpfully provided by the exception handler
copyright_file = open('guts/COPYRIGHT')
TemplateFile.copyright = copyright_file.read()
copyright_file.close()
for path in glob.glob('table_templates/*'):
try:
template_file = TemplateFile(path)
template_file.emit('copyright')
template_file.emit('header')
templates.append(template_file)
except IOError:
print "Invalid or malformed template %s. Aborting." % path
exit(1)
for filename in sys.argv[1:]:
# read in the datatype
sys.stdout.write("%s: " % filename)
datatype = DataType(filename)
datatypes.append(datatype)
print datatype.__repr__()
print ""
print "Writing datatypes...",
for datatype in datatypes:
# populate various tables and files with each datatype
for template_file in templates:
template_file.emit('body', datatype)
print "done. Cleaning up."
for template_file in templates:
# clean up files
template_file.emit('footer')
template_file.close()
if __name__ == '__main__':
main()
Jump to Line
Something went wrong with that request. Please try again.