Spaces:
Sleeping
Sleeping
File size: 12,462 Bytes
d12bc25 |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 |
# config.py - deals with loading configuration information.
# Loads config data from a .cfg file. Also caches the compiled
# data back into a .cfc file.
# If you are wondering how to avoid needing .cfg files (eg,
# if you are freezing Pythonwin etc) I suggest you create a
# .py file, and put the config info in a docstring. Then
# pass a CStringIO file (rather than a filename) to the
# config manager.
import glob
import importlib.util
import marshal
import os
import stat
import sys
import traceback
import types
import pywin
import win32api
from . import keycodes
debugging = 0
if debugging:
import win32traceutil # Some trace statements fire before the interactive window is open.
def trace(*args):
sys.stderr.write(" ".join(map(str, args)) + "\n")
else:
trace = lambda *args: None
compiled_config_version = 3
def split_line(line, lineno):
comment_pos = line.find("#")
if comment_pos >= 0:
line = line[:comment_pos]
sep_pos = line.rfind("=")
if sep_pos == -1:
if line.strip():
print("Warning: Line %d: %s is an invalid entry" % (lineno, repr(line)))
return None, None
return "", ""
return line[:sep_pos].strip(), line[sep_pos + 1 :].strip()
def get_section_header(line):
# Returns the section if the line is a section header, else None
if line[0] == "[":
end = line.find("]")
if end == -1:
end = len(line)
rc = line[1:end].lower()
try:
i = rc.index(":")
return rc[:i], rc[i + 1 :]
except ValueError:
return rc, ""
return None, None
def find_config_file(f):
return os.path.join(pywin.__path__[0], f + ".cfg")
def find_config_files():
return [
os.path.split(x)[1]
for x in [
os.path.splitext(x)[0]
for x in glob.glob(os.path.join(pywin.__path__[0], "*.cfg"))
]
]
class ConfigManager:
def __init__(self, f):
self.filename = "unknown"
self.last_error = None
self.key_to_events = {}
b_close = False
if hasattr(f, "readline"):
fp = f
self.filename = "<config string>"
compiled_name = None
else:
try:
f = find_config_file(f)
src_stat = os.stat(f)
except os.error:
self.report_error("Config file '%s' not found" % f)
return
self.filename = f
self.basename = os.path.basename(f)
trace("Loading configuration", self.basename)
compiled_name = os.path.splitext(f)[0] + ".cfc"
try:
cf = open(compiled_name, "rb")
try:
ver = marshal.load(cf)
ok = compiled_config_version == ver
if ok:
kblayoutname = marshal.load(cf)
magic = marshal.load(cf)
size = marshal.load(cf)
mtime = marshal.load(cf)
if (
magic == importlib.util.MAGIC_NUMBER
and win32api.GetKeyboardLayoutName() == kblayoutname
and src_stat[stat.ST_MTIME] == mtime
and src_stat[stat.ST_SIZE] == size
):
self.cache = marshal.load(cf)
trace("Configuration loaded cached", compiled_name)
return # We are ready to roll!
finally:
cf.close()
except (os.error, IOError, EOFError):
pass
fp = open(f)
b_close = True
self.cache = {}
lineno = 1
line = fp.readline()
while line:
# Skip to the next section (maybe already there!)
section, subsection = get_section_header(line)
while line and section is None:
line = fp.readline()
if not line:
break
lineno = lineno + 1
section, subsection = get_section_header(line)
if not line:
break
if section == "keys":
line, lineno = self._load_keys(subsection, fp, lineno)
elif section == "extensions":
line, lineno = self._load_extensions(subsection, fp, lineno)
elif section == "idle extensions":
line, lineno = self._load_idle_extensions(subsection, fp, lineno)
elif section == "general":
line, lineno = self._load_general(subsection, fp, lineno)
else:
self.report_error(
"Unrecognised section header '%s:%s'" % (section, subsection)
)
line = fp.readline()
lineno = lineno + 1
if b_close:
fp.close()
# Check critical data.
if not self.cache.get("keys"):
self.report_error("No keyboard definitions were loaded")
if not self.last_error and compiled_name:
try:
cf = open(compiled_name, "wb")
marshal.dump(compiled_config_version, cf)
marshal.dump(win32api.GetKeyboardLayoutName(), cf)
marshal.dump(importlib.util.MAGIC_NUMBER, cf)
marshal.dump(src_stat[stat.ST_SIZE], cf)
marshal.dump(src_stat[stat.ST_MTIME], cf)
marshal.dump(self.cache, cf)
cf.close()
except (IOError, EOFError):
pass # Ignore errors - may be read only.
def configure(self, editor, subsections=None):
# Execute the extension code, and find any events.
# First, we "recursively" connect any we are based on.
if subsections is None:
subsections = []
subsections = [""] + subsections
general = self.get_data("general")
if general:
parents = general.get("based on", [])
for parent in parents:
trace("Configuration based on", parent, "- loading.")
parent = self.__class__(parent)
parent.configure(editor, subsections)
if parent.last_error:
self.report_error(parent.last_error)
bindings = editor.bindings
codeob = self.get_data("extension code")
if codeob is not None:
ns = {}
try:
exec(codeob, ns)
except:
traceback.print_exc()
self.report_error("Executing extension code failed")
ns = None
if ns:
num = 0
for name, func in list(ns.items()):
if type(func) == types.FunctionType and name[:1] != "_":
bindings.bind(name, func)
num = num + 1
trace("Configuration Extension code loaded", num, "events")
# Load the idle extensions
for subsection in subsections:
for ext in self.get_data("idle extensions", {}).get(subsection, []):
try:
editor.idle.IDLEExtension(ext)
trace("Loaded IDLE extension", ext)
except:
self.report_error("Can not load the IDLE extension '%s'" % ext)
# Now bind up the key-map (remembering a reverse map
subsection_keymap = self.get_data("keys")
num_bound = 0
for subsection in subsections:
keymap = subsection_keymap.get(subsection, {})
bindings.update_keymap(keymap)
num_bound = num_bound + len(keymap)
trace("Configuration bound", num_bound, "keys")
def get_key_binding(self, event, subsections=None):
if subsections is None:
subsections = []
subsections = [""] + subsections
subsection_keymap = self.get_data("keys")
for subsection in subsections:
map = self.key_to_events.get(subsection)
if map is None: # Build it
map = {}
keymap = subsection_keymap.get(subsection, {})
for key_info, map_event in list(keymap.items()):
map[map_event] = key_info
self.key_to_events[subsection] = map
info = map.get(event)
if info is not None:
return keycodes.make_key_name(info[0], info[1])
return None
def report_error(self, msg):
self.last_error = msg
print("Error in %s: %s" % (self.filename, msg))
def report_warning(self, msg):
print("Warning in %s: %s" % (self.filename, msg))
def _readline(self, fp, lineno, bStripComments=1):
line = fp.readline()
lineno = lineno + 1
if line:
bBreak = (
get_section_header(line)[0] is not None
) # A new section is starting
if bStripComments and not bBreak:
pos = line.find("#")
if pos >= 0:
line = line[:pos] + "\n"
else:
bBreak = 1
return line, lineno, bBreak
def get_data(self, name, default=None):
return self.cache.get(name, default)
def _save_data(self, name, data):
self.cache[name] = data
return data
def _load_general(self, sub_section, fp, lineno):
map = {}
while 1:
line, lineno, bBreak = self._readline(fp, lineno)
if bBreak:
break
key, val = split_line(line, lineno)
if not key:
continue
key = key.lower()
l = map.get(key, [])
l.append(val)
map[key] = l
self._save_data("general", map)
return line, lineno
def _load_keys(self, sub_section, fp, lineno):
# Builds a nested dictionary of
# (scancode, flags) = event_name
main_map = self.get_data("keys", {})
map = main_map.get(sub_section, {})
while 1:
line, lineno, bBreak = self._readline(fp, lineno)
if bBreak:
break
key, event = split_line(line, lineno)
if not event:
continue
sc, flag = keycodes.parse_key_name(key)
if sc is None:
self.report_warning("Line %d: Invalid key name '%s'" % (lineno, key))
else:
map[sc, flag] = event
main_map[sub_section] = map
self._save_data("keys", main_map)
return line, lineno
def _load_extensions(self, sub_section, fp, lineno):
start_lineno = lineno
lines = []
while 1:
line, lineno, bBreak = self._readline(fp, lineno, 0)
if bBreak:
break
lines.append(line)
try:
c = compile(
"\n" * start_lineno + "".join(lines), # produces correct tracebacks
self.filename,
"exec",
)
self._save_data("extension code", c)
except SyntaxError as details:
errlineno = details.lineno + start_lineno
# Should handle syntax errors better here, and offset the lineno.
self.report_error(
"Compiling extension code failed:\r\nFile: %s\r\nLine %d\r\n%s"
% (details.filename, errlineno, details.msg)
)
return line, lineno
def _load_idle_extensions(self, sub_section, fp, lineno):
extension_map = self.get_data("idle extensions")
if extension_map is None:
extension_map = {}
extensions = []
while 1:
line, lineno, bBreak = self._readline(fp, lineno)
if bBreak:
break
line = line.strip()
if line:
extensions.append(line)
extension_map[sub_section] = extensions
self._save_data("idle extensions", extension_map)
return line, lineno
def test():
import time
start = time.clock()
f = "default"
cm = ConfigManager(f)
map = cm.get_data("keys")
took = time.clock() - start
print("Loaded %s items in %.4f secs" % (len(map), took))
if __name__ == "__main__":
test()
|