/usr/share/pyshared/nml/generic.py is in nml 0.2.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | __license__ = """
NML is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
NML 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with NML; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA."""
# -*- coding: utf-8 -*-
import sys
def truncate_int32(value):
"""
Truncate the given value so it can be stored in exactly 4 bytes. The sign
will be kept. Too high or too low values will be cut off, not clamped to
the valid range.
@param value: The value to truncate.
@type value: C{int}
@return: The truncated value.
@rtype: C{int}.
"""
#source: http://www.tiac.net/~sw/2010/02/PureSalsa20/index.html
return int( (value & 0x7fffFFFF) | -(value & 0x80000000) )
def check_range(value, min_value, max_value, name, pos):
"""
Check if a value is within a certain range and raise an error if it's not.
@param value: The value to check.
@type value: C{int}
@param min_value: Minimum valid value.
@type min_value: C{int}
@param max_value: Maximum valid value.
@type max_value: C{int}
@param name: Name of the variable that is being tested.
@type name: C{basestring}
@param pos: Position information from the variable being tested.
@type pos: L{Position}
"""
if not min_value <= value <= max_value:
raise RangeError(value, min_value, max_value, name, pos)
def reverse_lookup(dic, val):
#reverse dictionary lookup
return [k for k, v in dic.iteritems() if v == val][0]
class Position(object):
"""
Base class representing a position in a file.
@ivar filename: Name of the file.
@type filename: C{str}
"""
def __init__(self, filename):
self.filename = filename
class LinePosition(Position):
"""
Line in a file.
@ivar line_start: Line number (starting with 1) where the position starts.
@type line_start: C{int}
"""
def __init__(self, filename, line_start):
Position.__init__(self, filename)
self.line_start = line_start
def __str__(self):
return '"%s", line %d' % (self.filename, self.line_start)
class PixelPosition(Position):
"""
Position of a pixel (in a file with graphics).
@ivar xpos: Horizontal position of the pixel.
@type xpos: C{int}
@ivar ypos: Vertical position of the pixel.
@type ypos: C{int}
"""
def __init__(self, filename, xpos, ypos):
Position.__init__(self, filename)
self.xpos = xpos
self.ypos = ypos
def __str__(self):
return '"%s" at [x: %d, y: %d]' % (self.filename, self.xpos, self.ypos)
class ScriptError(Exception):
def __init__(self, value, pos = None):
self.value = value
self.pos = pos
def __str__(self):
if self.pos is None:
return self.value
else:
return str(self.pos) + ": " + self.value
class ConstError(ScriptError):
def __init__(self, pos = None):
ScriptError.__init__(self, "Expected a compile-time integer constant", pos)
class RangeError(ScriptError):
def __init__(self, value, min_value, max_value, name, pos = None):
ScriptError.__init__(self, name + " out of range " + str(min_value) + ".." + str(max_value) + ", encountered " + str(value), pos)
class ImageError(ScriptError):
def __init__(self, value, filename):
ScriptError.__init__(self, value, 'Image file "%s"' % filename)
class OnlyOnceError(ScriptError):
def __init__(self, typestr, pos = None):
ScriptError.__init__(self, "A grf may contain only one %s." % typestr, pos)
class OnlyOnce:
"""
Class to enforce that certain objects / constructs appear only once.
"""
seen = {}
@classmethod
def enforce(cls, obj, typestr):
"""
If this method is called more than once for an object of the exact same
class, an OnlyOnceError is raised.
"""
objtype = obj.__class__
if objtype in cls.seen:
raise OnlyOnceError(typestr, obj.pos)
cls.seen[objtype] = None
@classmethod
def clear(cls):
cls.seen = {}
def print_warning(msg, pos = None):
"""
Output a warning message to the user.
"""
if pos:
print >> sys.stderr, str(pos) + ":",
print >> sys.stderr, msg
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