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"""
Misc functions for Game Conqueror
Copyright (C) 2010,2011,2013 Wang Lu <coolwanglu(a)gmail.com>
Copyright (C) 2013 Mattias <mattiasmun(a)gmail.com>
Copyright (C) 2016 Andrea Stacchiotti <andreastacchiotti(a)gmail.com>
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 3 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, see <http://www.gnu.org/licenses/>.
"""
import sys
from gi.repository import Gtk
PY3K = sys.version_info >= (3, 0)
# check command syntax, data range etc.
# return a valid scanmem command
# raise if something is invalid
def check_scan_command (data_type, cmd, is_first_scan):
if cmd == '':
raise ValueError(_('No value provided'))
if data_type == 'string':
return '" ' + cmd
cmd = cmd.strip()
# hack for snapshot/update (TODO: make it possible with string)
if cmd == '?':
if is_first_scan:
return 'snapshot'
else:
return 'update'
if data_type == 'bytearray':
bytes = cmd.split(' ')
for byte in bytes:
if byte.strip() == '':
continue
if len(byte) != 2:
raise ValueError(_('Bad value: %s') % (byte, ))
if byte == '??':
continue
try:
_tmp = int(byte,16)
except:
raise ValueError(_('Bad value: %s') % (byte, ))
return cmd
else: # for numbers
is_operator_cmd = cmd in {'=', '!=', '>', '<', '+', '-'}
if not is_first_scan and is_operator_cmd:
return cmd
if is_first_scan and (is_operator_cmd or cmd[:2] in {'+ ', '- '}):
raise ValueError(_('Command \"%s\" is not valid for the first scan') % (cmd[:2],))
# evaluating the command
range_nums = cmd.split("..")
if len(range_nums) == 2:
# range detected
num_1 = eval_operand(range_nums[0])
num_2 = eval_operand(range_nums[1])
cmd = str(num_1) + ".." + str(num_2)
check_int(data_type, num_1)
check_int(data_type, num_2)
else:
# regular command processing
if cmd[:2] in {'+ ', '- ', '> ', '< '}:
num = cmd[2:]
cmd = cmd[:2]
elif cmd[:3] == '!= ':
num = cmd[3:]
cmd = cmd[:3]
else:
num = cmd
cmd = ''
num = eval_operand(num)
cmd += str(num)
check_int(data_type, num)
# finally
return cmd
# evaluate the expression
def eval_operand(s):
try:
v = eval(s)
py2_long = not PY3K and isinstance(v, long)
if isinstance(v, int) or isinstance(v, float) or py2_long:
return v
except:
pass
raise ValueError(_('Bad value: %s') % (s,))
# check if a number is a valid integer
# raise an exception if not
def check_int (data_type, num):
if data_type.startswith('int'):
py2_long = not PY3K and isinstance(num, long)
if not (isinstance(num, int) or py2_long):
raise ValueError(_('%s is not an integer') % (num,))
if data_type == 'int':
width = 64
else:
width = int(data_type[len('int'):])
if num > ((1<<width)-1) or num < -(1<<(width-1)):
raise ValueError(_('%s is too bulky for %s') % (num, data_type))
return
# convert [a,b,c] into a liststore that [[a],[b],[c]], where a,b,c are strings
def build_simple_str_liststore(l):
r = Gtk.ListStore(str)
for e in l:
r.append([e])
return r
# set active item of the `combobox`
# such that the value at `col` is `name`
def combobox_set_active_item(combobox, name, col=0):
model = combobox.get_model()
iter = model.get_iter_first()
while iter is not None:
if model.get_value(iter, col) == name:
break
iter = model.iter_next(iter)
if iter is None:
raise ValueError(_('Cannot locate item: %s')%(name,))
combobox.set_active_iter(iter)
# sort column according to datatype (callback for TreeView)
def value_compare(treemodel, iter1, iter2, user_data):
sort_col, isnumeric = user_data
string1 = treemodel.get_value(iter1, sort_col)
string2 = treemodel.get_value(iter2, sort_col)
if (isnumeric):
val1 = float(string1)
val2 = float(string2)
else:
val1 = string1
val2 = string2
if val1 > val2: return 1
if val1 == val2: return 0
return -1
# format number in base16 (callback for TreeView)
def format16(col, cell, model, iter, hex_col):
cell.set_property("text", "%x" % model.get_value(iter, hex_col))
# append a column to `treeview`, with given `title`
# keyword parameters
# renderer_class -- default: Gtk.CellRendererText
# attributes -- if not None, will be applied to renderer
# properties -- if not None, will be applied to renderer
# signals -- if not None, will be connected to renderer
# the latter two should be a list of tuples, i.e. ((name1, value1), (name2, value2))
def treeview_append_column(treeview, title, sort_id=None, resizable=True, hex_col=None, **kwargs):
renderer_class = kwargs.get('renderer_class', Gtk.CellRendererText)
attributes = kwargs.get('attributes')
properties = kwargs.get('properties')
signals = kwargs.get('signals')
column = Gtk.TreeViewColumn(title)
treeview.append_column(column)
if sort_id is not None:
column.set_sort_column_id(sort_id)
column.set_resizable(resizable)
renderer = renderer_class()
column.pack_start(renderer, True)
if hex_col is not None:
column.set_cell_data_func(renderer, format16, hex_col)
if attributes:
for k,v in attributes:
column.add_attribute(renderer, k, v)
if properties:
for k,v in properties:
renderer.set_property(k,v)
if signals:
for k,v in signals:
renderer.connect(k,v)
# data is optional data to callback
def menu_append_item(menu, name, callback, data=None):
item = Gtk.MenuItem(label=name)
menu.append(item)
item.connect('activate', callback, data)
# Interface for bytes<>string conversion for py2/3
# Usage is the same you'd do in py3, call `decode` on external raw data
# and `encode` to work with the memory representation
def decode(raw_bytes, errors='strict'):
if PY3K:
return raw_bytes.decode(errors=errors)
else:
return str(raw_bytes)
def encode(unicode_string, errors='strict'):
if PY3K:
return unicode_string.encode(errors=errors)
else:
return unicode_string
# Convert codepoints to integers byte by byte
def str2bytes(string):
if PY3K:
return bytes(string)
else:
return map(ord, string)
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