diff options
Diffstat (limited to 'src/editor.py')
| -rw-r--r-- | src/editor.py | 76 |
1 files changed, 73 insertions, 3 deletions
diff --git a/src/editor.py b/src/editor.py index 5148bac..17c7969 100644 --- a/src/editor.py +++ b/src/editor.py @@ -58,6 +58,11 @@ ALERT_COLOUR = None :str? The colour of the alert message ''' +KILLRING_LIMIT = 50 +''' +:int The maximum size of the killring +''' + atleast = lambda x, minimum : (x is not None) and (x >= minimum) ''' @@ -80,6 +85,73 @@ Check if a key stroke is a backspace key stroke ''' +g, l = globals(), dict(locals()) +for key in l: + g[key] = l[key] + + +## Load extension and configurations via pytagomacsrc. +config_file = None +# Possible auto-selected configuration scripts, +# earlier ones have precedence, we can only select one. +files = [] +def add_files(var, *ps, multi = False): + if var == '~': + try: + # Get the home (also known as initial) directory of the real user + import pwd + var = pwd.getpwuid(os.getuid()).pw_dir + except: + return + else: + # Resolve environment variable or use empty string if none is selected + if (var is None) or (var in os.environ) and (not os.environ[var] == ''): + var = '' if var is None else os.environ[var] + else: + return + paths = [var] + # Split environment variable value if it is a multi valeu variable + if multi and os.pathsep in var: + paths = [v for v in var.split(os.pathsep) if not v == ''] + # Add files according to patterns + for p in ps: + p = p.replace('/', os.sep).replace('%', 'pytagomacs') + for v in paths: + files.append(v + p) +add_files('XDG_CONFIG_HOME', '/%/%rc', '/%rc') +add_files('HOME', '/.config/%/%rc', '/.config/%rc', '/.%rc') +add_files('~', '/.config/%/%rc', '/.config/%rc', '/.%rc') +add_files('XDG_CONFIG_DIRS', '/%rc', multi = True) +add_files(None, '/etc/%rc') +for file in files: + # If the file we exists, + if os.path.exists(file): + # select it, + config_file = file + # and stop trying files with lower precedence. + break +# As the zeroth argument for the configuration script, +# add the configurion script file. Just like the zeroth +# command line argument is the invoked command. +conf_opts = [config_file] + conf_opts +if config_file is not None: + code = None + # Read configuration script file + with open(config_file, 'rb') as script: + code = script.read() + # Decode configurion script file and add a line break + # at the end to ensure that the last line is empty. + # If it is not, we will get errors. + code = code.decode('utf-8', 'error') + '\n' + # Compile the configuration script, + code = compile(code, config_file, 'exec') + # and run it, with it have the same + # globals as this module, so that it can + # not only use want we have defined, but + # also redefine it for us. + exec(code, g) + + class Jump(): ''' @@ -98,8 +170,6 @@ class Jump(): print(self.string, end = '') -## TODO colours should be configurable with rc file -## TODO ring limits should be configurable with rc file ## TODO widthless characters should be ignored when calculating the size a text ## TODO implement undo history @@ -133,7 +203,7 @@ class TextArea(): if height <= 0: height += int(screen_size[0]) - top + 1 self.fields, self.datamap, self.left, self.top, self.width, self.height = fields, datamap, left, top, width - 1, height self.innerleft = len(max(self.fields, key = len)) + 3 - self.killring, self.editring = Killring(), Editring() + self.killring, self.editring = Killring(limit = KILLRING_LIMIT), Editring() data = lambda field : datamap[field] if field in datamap else '' self.lines = [Line(self, self.fields[y], data(self.fields[y]), y) for y in range(len(self.fields))] self.areawidth = self.width - self.innerleft |