/usr/share/pyshared/gamera/process.py is in python-gamera 3.3.3-2ubuntu1.
This file is owned by root:root, with mode 0o644.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 | # -*- mode: python; indent-tabs-mode: nil; tab-width: 3 -*-
# vim: set tabstop=3 shiftwidth=3 expandtab:
#
# Copyright (C) 2001-2005 Ichiro Fujinaga, Michael Droettboom,
# and Karl MacMillan
#
# This program 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.
#
# 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
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
import os.path, sys, cStringIO
from util import Set
from dis import dis
from inspect import getmodule
from types import *
from args import *
# Finds the member variables that a method accesses and sets
def find_method_dependencies(method):
buffer = cStringIO.StringIO()
stdout = sys.stdout
sys.stdout = buffer
dis(method)
bytecodes = [x.split() for x in buffer.getvalue().split("\n")]
sys.stdout = stdout
buffer.close()
sets = Set()
requires = Set()
self = 0
for bytecode in bytecodes:
if len(bytecode) > 3:
if self:
if bytecode[1] == "STORE_ATTR":
sets.append(bytecode[3][1:-1])
elif bytecode[1] == "LOAD_ATTR":
requires.append(bytecode[3][1:-1])
self = 0
elif (len(bytecode) > 3 and bytecode[1] == "LOAD_FAST" and
bytecode[2] == "0"):
self = 1
requires = filter(lambda x: x not in sets, requires)
if sets == [] and requires == []:
print ("WARNING: %s appears to have no side effects."
"What are you, some kind of functional programmer? ;)" %
method.__name__)
return sets, requires
# Generic base class for high-level processes.
# Manages saving/loading of data necessary to perform some/all of a process.
class Process:
def __init__(self, base_filename, display_only=0):
self.base_filename = os.path.splitext(os.path.abspath(base_filename))[0]
self.display_only = display_only
self.current_step = 0
def get_step_number(self, step, default = 0):
if step == None:
return default
elif type(step) == StringType and step in self.steps:
return self.steps.index(step)
elif type(step) == IntType and step < len(self.steps):
return step
raise KeyError("%s does not identify a step in the process." % step)
def get_filename(self, extension):
# TODO: change so this returns a unique filename
return self.base_filename + "." + extension
def process(self, first_step=None, last_step=None, save_members=None):
first_step = self.get_step_number(first_step)
last_step = self.get_step_number(last_step, len(self.steps) - 1)
for step in self.steps[first_step:last_step + 1]:
if (step[:5] == "DEBUG" and step != self.steps[last_step]):
continue
self.__do_step(step)
if save_members == None:
for saveable in self.saveable_members():
if (self.__dict__.has_key(saveable)):
self.__save_attr(saveable)
else:
for save in save_members:
self.__save_attr(save)
def next(self):
if self.current_step >= len(self.steps):
return -1
sets, requires = self.do_step(self.current_step)
self.__save_attr(sets)
self.current_step += 1
def saveable_members(self):
return [x[5:] for x in self.__class__.__dict__.keys()
if x[:5] == "save_"]
def __do_step(self, step):
step_no = self.get_step_number(step)
function = getattr(self, step)
sets, requires = find_method_dependencies(function)
for load in requires:
if not hasattr(self, load):
self.__load_attr(load, step)
print "Step %d: %s" % (step_no, step)
if not self.display_only:
function()
return sets, requires
def __load_attr(self, load, step="unknown"):
if not hasattr(self, "load_" + load):
raise RuntimeError("The %s step requires the variable '%s'. "
"However, there is no load_%s function defined."
% (step, load, load))
else:
print "Loading %s" % load
if not self.display_only:
getattr(self, "load_" + load)()
def __save_attr(self, save):
if not hasattr(self, save):
print ("WARNING: %s is not defined, therefore it can not be saved."
% save)
if not hasattr(self, "save_" + save):
raise RuntimeError("The Gamera process system wants to save %s, "
"but there is no save_%s function defined."
% (save, save))
else:
print "Saving %s" % save
if not self.display_only:
getattr(self, "save_" + save)()
steps = []
class ProcessWizard(Wizard):
def __init__(self, shell, locals, process):
self.shell = shell
self.parent = None
self.locals = locals
self.process = process
self.caption = self.process.__name__ + " process"
self.init_args = ()
self.dlg_select_steps = Args(
[Radio("Perform the entire process", "All"),
Radio("Perform part of the process", "Custom"),
Choice(" Starting step", self.process.steps),
Choice(" Ending step", self.process.steps, -1)],
# caption=self.caption,
function='cb_select_steps',
title=('Select which steps of the %s process you would like to perform.' % self.process.__name__))
if hasattr(self, 'dlg_init'):
self.show(self.dlg_init)
else:
self.show(self.dlg_select_steps)
def cb_init(self, *args):
self.init_args = args
return self.dlg_select_steps
def cb_select_steps(self, all, custom, start_step, end_step):
if all:
start_step = 0
end_step = len(self.process.steps) - 1
self.start_step = start_step
self.end_step = end_step
self.saves = None
return None
elif custom:
if start_step > end_step:
end_step, start_step = start_step, end_step
self.start_step = start_step
self.end_step = end_step
saves = Set()
for step in range(start_step, end_step + 1):
deps = find_method_dependencies(
getattr(self.process, self.process.steps[step]))
saves.extend(deps[0])
saves.extend(deps[1])
args = []
self.saveables = []
for step in saves:
if hasattr(self.process, "save_" + step):
args.append(Check("", step, 1))
self.saveables.append(step)
self.dlg_select_saves = Args(
args,
# caption=self.caption,
title="Select which members to save.",
function="cb_select_saves")
return self.dlg_select_saves
def cb_select_saves(self, *args):
self.saves = []
for x in range(len(args)):
if args[x]:
self.saves.append(self.saveables[x])
def done(self):
self.shell.run("%s.%s%s.process(%s, %s, %s)" %
(getmodule(self.process).__name__.split('.')[-1],
self.process.__name__,
self.init_args,
repr(self.process.steps[self.start_step]),
repr(self.process.steps[self.end_step]),
repr(self.saves)))
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