718 lines
24 KiB
Python
718 lines
24 KiB
Python
import datetime, grp, md5, os, pwd, re, sets, shutil, stat, string
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import aes, dirutil, regex, highlight, lex
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from point import Point
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# undo/redo stack constants
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ACT_NORM = 0
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ACT_UNDO = 1
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ACT_REDO = 2
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STACK_LIMIT = 1024
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# used for multiple text additions/deletions
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class GroupMove(object):
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def __init__(self, buffer, p, moves):
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self.buffer = buffer
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self.lines = lines
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self.moves = moves
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def restore(self, act=ACT_UNDO):
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assert act == ACT_UNDO or act == ACT_REDO
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for move in self.moves:
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move.restore(act)
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def getpos(self):
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return self.moves[-1].getpos()
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# used for undo/redo stacks when text will need to be added back
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class AddMove(object):
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def __init__(self, buffer, p, lines):
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self.buffer = buffer
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self.p = p
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self.lines = lines
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def restore(self, act=ACT_UNDO):
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assert act == ACT_UNDO or act == ACT_REDO
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self.buffer.insert_lines(self.p, self.lines, act)
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def getpos(self):
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return self.p
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# used for undo/redo stacks when text will need to be removed
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class DelMove(object):
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def __init__(self, buffer, p1, p2):
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self.buffer = buffer
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self.p1 = p1
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self.p2 = p2
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def restore(self, act):
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assert act == ACT_UNDO or act == ACT_REDO
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self.buffer.delete(self.p1, self.p2, act)
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def getpos(self):
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return self.p1
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# abstract class
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class Buffer(object):
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btype = 'generic'
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def __init__(self, nl='\n', stack_limit=STACK_LIMIT):
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assert nl in ('\n', '\r', '\r\n'), "Invalid line ending"
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self.lines = [""]
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self.windows = []
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self.undo_stack = []
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self.redo_stack = []
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self.stack_limit = stack_limit
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self.nl = nl
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self.modified = False
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self.highlights = {}
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self.indentlvl = 4
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# basic file operation stuff
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def _open_file_r(self, path):
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path = os.path.realpath(path)
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if not os.path.isfile(path):
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raise Exception, "Path '%s' does not exist" % (path)
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if not os.access(path, os.R_OK):
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raise Exception, "Path '%s' cannot be read" % (path)
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f = open(path, 'r')
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return f
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def _open_file_w(self, path):
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if os.path.isfile(path):
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raise Exception, "Path '%s' already exists" % (path)
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d = os.path.dirname(path)
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if not os.access(d, os.R_OK):
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raise Exception, "Dir '%s' cannot be read" % (path)
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if not os.access(d, os.W_OK):
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raise Exception, "Dir '%s' cannot be written" % (path)
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f = open(path, 'w')
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return f
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def _temp_path(self, path):
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(dirname, basename) = os.path.split(path)
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return os.path.join(dirname, ".__%s__pmacs" % (basename))
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# undo/redo stack
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def _stack_trim(self, stack):
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if self.stack_limit:
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while len(stack) > self.stack_limit:
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stack.pop(0)
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def add_to_stack(self, move, act):
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if act == ACT_NORM:
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self.redo_stack = []
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self.undo_stack.append(move)
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self._stack_trim(self.undo_stack)
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elif act == ACT_UNDO:
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self.redo_stack.append(move)
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self._stack_trim(self.redo_stack)
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elif act == ACT_REDO:
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self.undo_stack.append(move)
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self._stack_trim(self.undo_stack)
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else:
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raise Exception, "Invalid act: %d" % (act)
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def undo(self):
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if len(self.undo_stack):
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move = self.undo_stack.pop(-1)
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move.restore(ACT_UNDO)
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return move.getpos()
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else:
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raise Exception, "Nothing to Undo!"
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def redo(self):
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if len(self.redo_stack):
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move = self.redo_stack.pop(-1)
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move.restore(ACT_REDO)
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return move.getpos()
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else:
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raise Exception, "Nothing to Redo!"
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# window-buffer communication
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def add_window(self, w):
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if w not in self.windows:
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self.windows.append(w)
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modename = w.mode.name()
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if modename not in self.highlights and w.mode.lexer is not None:
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self.highlights[modename] = highlight.Highlighter(w.mode.lexer)
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self.highlights[modename].highlight(self.lines)
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def remove_window(self, w):
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if w in self.windows:
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self.windows.remove(w)
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modename = w.mode.name()
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found = False
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for w2 in self.windows:
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if w2.mode.name() == modename:
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found = True
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break
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if not found:
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del self.highlights[modename]
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def _region_add(self, p1, p2, lines, act):
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move = DelMove(self, p1, p2)
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self.add_to_stack(move, act)
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for w in self.windows:
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w.region_added(p1, lines)
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for name in self.highlights:
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self.highlights[name].relex_add(self.lines, p1.y, p1.x, lines)
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def _region_del(self, p1, p2, lines, act):
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move = AddMove(self, p1, lines)
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self.add_to_stack(move, act)
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for w in self.windows:
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w.region_removed(p1, p2)
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for name in self.highlights:
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self.highlights[name].relex_del(self.lines, p1.y, p1.x, p2.y, p2.x)
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# internal validation
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def _validate_point(self, p):
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self._validate_xy(p.x, p.y)
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def _validate_xy(self, x, y):
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assert y >= 0 and y < len(self.lines), \
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"xy1: %d >= 0 and %d < %d" % (y, y, len(self.lines))
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assert x >= 0 and x <= len(self.lines[y]), \
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"xy2: %d >= 0 and %d <= %d" % (x, x, len(self.lines[y]))
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def _validate_y(self, y):
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assert y >= 0 and y < len(self.lines), \
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"y: %d >= 0 and %d < %d" % (y, y, len(self.lines))
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# deal with the actual logical document string
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def num_chars(self):
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n = 0
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for line in self.lines[:-1]:
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n += len(line) + 1
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n += len(self.lines[-1])
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return n
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def num_lines(self):
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return len(self.lines)
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def make_string(self, nl='\n'):
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return nl.join(self.lines)
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# methods to be overridden by subclasses
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def name(self):
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return "Generic"
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def close(self):
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pass
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def open(self):
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pass
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def changed(self):
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return self.modified
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def reload(self):
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raise Exception, "%s reload: Unimplemented" % (self.name())
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def save_as(self, path, force=False):
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# check to see if the path exists, and if we're prepared to overwrite it
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# if yes to both, get its mode so we can preserve the path's permissions
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mode = None
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if os.path.exists(path):
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if force:
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mode = os.stat(self.path)[0]
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else:
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raise Exception, "oh no! %r already exists" % path
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# create the string that we're going to write into the file
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data = self.write_filter(self.make_string(nl=self.nl))
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# create a safe temporary path to write to, and write out data to it
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temp_path = self._temp_path()
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f2 = self._open_file_w(temp_path)
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f2.write(data)
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f2.close()
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# move the temporary file to the actual path; maybe change permissions
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shutil.move(temp_path, path)
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if mode:
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os.chmod(path, mode)
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# the file has not been modified now
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self.modified = False
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def readonly(self):
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return False
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def read_filter(self, data):
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return data
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def write_filter(self, data):
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return data
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# point retrieval
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def get_buffer_start(self):
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return Point(0, 0)
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def get_buffer_end(self):
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return Point(len(self.lines[-1]), len(self.lines) - 1)
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# data retrieval
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def get_sublines(self, p1, p2):
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self._validate_point(p1)
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self._validate_point(p2)
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assert p1 <= p2, "p1.x (%d) > p2.x (%d)" % (p1.x, p2.x)
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lines = []
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x = p1.x
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for i in range(p1.y, p2.y):
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lines.append(self.lines[i][x:])
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x = 0
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lines.append(self.lines[p2.y][x:p2.x])
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return lines
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def get_substring(self, p1, p2):
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lines = self.get_sublines(p1, p2)
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return '\n'.join(lines)
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# buffer set
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def set_lines(self, lines, force=False):
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if not force and self.readonly():
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raise Exception, "set_data: buffer is readonly"
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start = self.get_buffer_start()
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end = self.get_buffer_end()
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self.delete(start, end, force=force)
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self.insert_lines(start, lines, force=force)
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self.modified = True
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def set_data(self, data, force=False):
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lines = data.split('\n')
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self.set_lines(lines, force)
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# insertion into buffer
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def insert_lines(self, p, lines, act=ACT_NORM, force=False):
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#if lines == ['(']:
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# raise Exception, "damn"
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llen = len(lines)
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assert llen > 0
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if not force:
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assert not self.readonly(), "insert_string: buffer is read-only"
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p2 = p.vadd(len(lines[-1]), llen - 1)
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if llen > 1:
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self.lines.insert(p.y + 1, [])
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self.lines[p.y + 1] = lines[-1] + self.lines[p.y][p.x:]
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self.lines[p.y] = self.lines[p.y][:p.x] + lines[0]
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for i in range(1, llen - 1):
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self.lines.insert(p.y + i, lines[i])
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else:
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self.lines[p.y] = self.lines[p.y][:p.x] + lines[-1] + self.lines[p.y][p.x:]
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self._region_add(p, p2, lines, act)
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self.modified = True
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def insert_string(self, p, s, act=ACT_NORM, force=False):
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lines = s.split("\n")
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self.insert_lines(p, lines, act, force)
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# deletion from buffer
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def delete(self, p1, p2, act=ACT_NORM, force=False):
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"""delete characters from p1 up to p2 from the buffer"""
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if not force:
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assert not self.readonly(), "delete_string: buffer is read-only"
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self._validate_point(p1)
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self._validate_point(p2)
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if p1 == p2:
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return
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assert p1 < p2, "p1 %r > p2 %r" % (p1, p2)
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lines = self.get_sublines(p1, p2)
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line1 = self.lines[p1.y]
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line2 = self.lines[p2.y]
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self.lines[p1.y:p2.y+1] = ["%s%s" % (line1[:p1.x], line2[p2.x:])]
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self._region_del(p1, p2, lines, act)
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self.modified = True
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def delete_char(self, p, act=ACT_NORM, force=False):
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if p.x == len(self.lines[p.y]):
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p2 = Point(0, p.y + 1)
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else:
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p2 = Point(p.x + 1, p.y)
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self.delete(p, p2, act=act, force=force)
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def overwrite_char(self, p, c, act=ACT_NORM, force=False):
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self.delete_char(p, act=act, force=force)
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self.insert_string(p, c, act=act, force=force)
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def delete_line(self, y, act=ACT_NORM, force=False):
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line = self.lines[y]
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p1 = Point(0, y)
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if y < len(self.lines) - 1:
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p2 = Point(0, y + 1)
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else:
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p2 = Point(len(self.lines[-1]), y)
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self.delete(p1, p2, act, force)
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# random
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def count_leading_whitespace(self, y):
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line = self.lines[y]
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m = regex.leading_whitespace.match(line)
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if m:
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return m.end()
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else:
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# should not happen
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raise Exception, "iiiijjjj"
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# scratch is a singleton
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scratch = None
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class ScratchBuffer(Buffer):
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btype = 'scratch'
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def __new__(cls, *args, **kwargs):
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global scratch
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if scratch is None:
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scratch = object.__new__(ScratchBuffer, *args, **kwargs)
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return scratch
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def name(self):
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return "*Scratch*"
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def close(self):
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global scratch
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scratch = None
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class DataBuffer(Buffer):
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btype = 'data'
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def __init__(self, name, data, nl='\n'):
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Buffer.__init__(self, nl)
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self._name = name
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self.lines = data.split("\n")
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def name(self):
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return self._name
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def close(self):
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pass
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def readonly(self):
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return True
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# console is another singleton
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console = None
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class ConsoleBuffer(Buffer):
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btype = 'console'
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modename = 'console'
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def __new__(cls, *args, **kwargs):
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global console
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if console is None:
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b = object.__new__(ConsoleBuffer, *args, **kwargs)
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console = b
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return console
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def __init__(self, nl='\n'):
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Buffer.__init__(self, nl)
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self.clear()
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def clear(self):
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lines = ['Python Console\n',
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"Evaluate python expressions in the editor's context (self)\n",
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'Press Control-] to exit\n',
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'\n']
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console.set_data(''.join(lines), force=True)
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def name(self):
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return '*Console*'
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def changed(self):
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return False
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def close(self):
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global console
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console = None
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def readonly(self):
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return True
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class BinaryDataException(Exception):
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pass
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class FileBuffer(Buffer):
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btype = 'file'
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def __init__(self, path, nl='\n', name=None):
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'''fb = FileBuffer(path)'''
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Buffer.__init__(self, nl)
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self.path = os.path.realpath(path)
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self.checksum = None
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if name is None:
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self._name = os.path.basename(self.path)
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else:
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self._name = name
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if os.path.exists(self.path) and not os.access(self.path, os.W_OK):
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self._readonly = True
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else:
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self._readonly = False
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def readonly(self):
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return self._readonly
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def _open_file_r(self, path=None):
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if path is None:
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path = self.path
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path = os.path.realpath(path)
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self.path = path
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if not os.path.isfile(path):
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raise Exception, "Path '%s' does not exist" % (path)
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if not os.access(path, os.R_OK):
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raise Exception, "Path '%s' cannot be read" % (path)
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f = open(path, 'r')
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return f
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def _open_file_w(self, path=None):
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if path is None:
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path = self.path
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if os.path.isfile(path):
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raise Exception, "Path '%s' already exists" % (path)
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d = os.path.dirname(path)
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if not os.access(d, os.R_OK):
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raise Exception, "Dir '%s' cannot be read" % (path)
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if not os.access(d, os.W_OK):
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raise Exception, "Dir '%s' cannot be written" % (path)
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f = open(path, 'w')
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return f
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def _temp_path(self, path=None):
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if path is None:
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path = self.path
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(dirname, basename) = os.path.split(path)
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return os.path.join(dirname, ".__%s__pmacs" % (basename))
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# methods for dealing with the underlying resource, etc.
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def name(self):
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#return self.path
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return self._name
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def path_exists(self):
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return os.path.exists(self.path)
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def store_checksum(self, data):
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self.checksum = md5.new(data)
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def read(self):
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if self.path_exists():
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f = self._open_file_r()
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data = f.read()
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f.close()
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self.store_checksum(data)
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else:
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data = ''
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data = self.read_filter(data)
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data = data.replace("\t", " ")
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for i in range(0, min(len(data), 8)):
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if data[i] not in string.printable:
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raise BinaryDataException, "binary files are not supported"
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#FIXME: this is horrible...but maybe not as horrible as using tabs??
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return data
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def open(self):
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data = self.read()
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self.lines = data.split(self.nl)
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def reload(self):
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self.open()
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def changed_on_disk(self):
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assert self.checksum is not None
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f = open(self.path)
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data = f.read()
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f.close()
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m = md5.new(data)
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return self.checksum.digest() != m.digest()
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def save(self, force=False):
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if self.readonly():
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raise Exception, "can't save a read-only file"
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if self.checksum is not None and force is False:
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# the file already existed and we took a checksum so make sure it's
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# still the same right now
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if not self.path_exists():
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raise Exception, "oh no! %r disappeared!" % self.path
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if self.changed_on_disk():
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raise Exception, "oh no! %r has changed on-disk!" % self.path
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temp_path = self._temp_path()
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data = self.make_string(nl=self.nl)
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if self.windows[0].mode.savetabs:
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data = data.replace(" ", "\t")
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data = self.write_filter(data)
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f2 = self._open_file_w(temp_path)
|
|
f2.write(data)
|
|
f2.close()
|
|
|
|
if self.path_exists():
|
|
mode = os.stat(self.path)[0]
|
|
os.chmod(temp_path, mode)
|
|
|
|
shutil.move(temp_path, self.path)
|
|
self.store_checksum(data)
|
|
self.modified = False
|
|
def save_as(self, path):
|
|
self.path = path
|
|
self.save()
|
|
|
|
class AesBuffer(FileBuffer):
|
|
btype = 'aesfile'
|
|
def __init__(self, path, password, nl='\n', name=None):
|
|
'''fb = FileBuffer(path)'''
|
|
FileBuffer.__init__(self, path, nl, name)
|
|
self.password = password
|
|
def read_filter(self, data):
|
|
return aes.decrypt_data(data, self.password)
|
|
def write_filter(self, data):
|
|
return aes.encrypt_data(data, self.password)
|
|
|
|
class Binary32Buffer(FileBuffer):
|
|
btype = 'bin32file'
|
|
wordsize = 4
|
|
numwords = 4
|
|
def __init__(self, path, nl='\n', name=None):
|
|
'''fb = FileBuffer(path)'''
|
|
FileBuffer.__init__(self, path, nl, name)
|
|
def read_filter(self, data):
|
|
lines = []
|
|
i = 0
|
|
while i < len(data):
|
|
j = 0
|
|
words = []
|
|
while j < self.numwords * self.wordsize and i + j < len(data):
|
|
nibbles = []
|
|
for c in data[i + j:i + j + self.wordsize]:
|
|
nibbles.append(string.hexdigits[ord(c) / 16])
|
|
nibbles.append(string.hexdigits[ord(c) % 16])
|
|
words.append(''.join(nibbles))
|
|
j += self.wordsize
|
|
lines.append(' '.join(words))
|
|
i += self.numwords * self.wordsize
|
|
return '\n'.join(lines)
|
|
def write_filter(self, data):
|
|
bytes = []
|
|
lastc = None
|
|
for c in data:
|
|
if c not in '0123456789abcdefABCDEF':
|
|
pass
|
|
elif lastc is None:
|
|
lastc = c
|
|
else:
|
|
bytes.append(chr(int(lastc + c, 16)))
|
|
lastc = None
|
|
if lastc is not None:
|
|
bytes.append(chr(int(lastc + '0', 16)))
|
|
return ''.join(bytes)
|
|
|
|
class Binary64Buffer(Binary32Buffer):
|
|
wordsize = 8
|
|
numwords = 2
|
|
|
|
class DirBuffer(Buffer):
|
|
btype = 'dir'
|
|
def __init__(self, path, nl='\n', name=None):
|
|
Buffer.__init__(self, nl)
|
|
self.path = os.path.realpath(path)
|
|
def changed(self):
|
|
return False
|
|
def readonly(self):
|
|
return True
|
|
def name(self):
|
|
return self.path
|
|
def path_exists(self):
|
|
return os.path.exists(self.path)
|
|
|
|
def _get_names(self):
|
|
if not self.path_exists():
|
|
raise Exception, "directory %r does not exists" % self.path
|
|
names = os.listdir(self.path)
|
|
if self.path != '/':
|
|
names.insert(0, '..')
|
|
names.insert(0, '.')
|
|
return names
|
|
def _make_path(self, name):
|
|
return os.path.join(self.path, name)
|
|
def _get_lines(self):
|
|
names = self._get_names()
|
|
|
|
fieldlines = []
|
|
maxlens = [0] * 5
|
|
for name in names:
|
|
path = self._make_path(name)
|
|
fields = dirutil.path_fields(path, name)
|
|
for i in range(0, 5):
|
|
try:
|
|
maxlens[i] = max(maxlens[i], len(fields[i]))
|
|
except:
|
|
raise Exception, '%d %r' % (i, fields[i])
|
|
fieldlines.append(fields)
|
|
|
|
fieldlines.sort(cmp=dirutil.path_sort)
|
|
fmt = '%%%ds %%-%ds %%-%ds %%%ds %%%ds %%s' % tuple(maxlens)
|
|
|
|
lines = []
|
|
for fields in fieldlines:
|
|
s = fmt % fields
|
|
lines.append(s)
|
|
return lines
|
|
def open(self):
|
|
self.lines = self._get_lines()
|
|
def reload(self):
|
|
lines = self._get_lines()
|
|
self.set_lines(lines, force=True)
|
|
def save(self, force=False):
|
|
raise Exception, "can't save a directory buffer"
|
|
def save_as(self, path):
|
|
raise Exception, "can't save a directory buffer"
|
|
|
|
class PathListBuffer(DirBuffer):
|
|
btype = 'pathlist'
|
|
def __init__(self, name, paths, nl='\n'):
|
|
Buffer.__init__(self, nl)
|
|
self.paths = list(paths)
|
|
self.path = os.getcwd()
|
|
self._name = name
|
|
def path_exists(self):
|
|
raise Exception
|
|
def _get_names(self):
|
|
cwd = os.getcwd()
|
|
return [x.replace(cwd, '.', 1) for x in self.paths]
|
|
def _make_path(self, name):
|
|
if name.startswith('.'):
|
|
return name.replace('.', os.getcwd(), 1)
|
|
else:
|
|
return name
|
|
def name(self):
|
|
return self._name
|
|
|
|
# NOTE: this highlighter will not reprocess the data given. it is intended to
|
|
# be used with read-only buffers like DataBuffer and ColorBuffer
|
|
class ColorHighlighter(highlight.Highlighter):
|
|
color_re = re.compile(r'\[([a-zA-Z0-9\*:]+)\]')
|
|
color_map = {
|
|
'B': 'black',
|
|
'r': 'red',
|
|
'g': 'green',
|
|
'y': 'yellow',
|
|
'b': 'blue',
|
|
'm': 'magenta',
|
|
'c': 'cyan',
|
|
'w': 'white',
|
|
'd': 'default',
|
|
'*': 'bold',
|
|
}
|
|
def __init__(self):
|
|
self.tokens = []
|
|
def append_token(self, y, x, s, color):
|
|
s2 = s.replace('\\[', '[')
|
|
s2 = s2.replace('\\]', ']')
|
|
s2 = s2.replace('\\\\', '\\')
|
|
t = lex.Token('color_data', None, y, x, s2, color)
|
|
self.tokens[y].append(t)
|
|
return len(s) - len(s2)
|
|
def highlight(self, lines):
|
|
if self.tokens:
|
|
return
|
|
self.tokens = [None] * len(lines)
|
|
for y in range(0, len(lines)):
|
|
self.tokens[y] = []
|
|
line = lines[y]
|
|
c = ['default', 'default']
|
|
i = 0
|
|
offset = 0
|
|
while i < len(line):
|
|
m = self.color_re.search(line, i)
|
|
if m:
|
|
(j, k) = (m.start(), m.end())
|
|
if j > i:
|
|
offset += self.append_token(y, i - offset, line[i:j], c)
|
|
fields = m.group(1).split(':')
|
|
c = [self.color_map.get(x, x) for x in fields]
|
|
offset += k - j
|
|
i = k
|
|
else:
|
|
offset += self.append_token(y, i - offset, line[i:], c)
|
|
break
|
|
|
|
class ColorDataBuffer(DataBuffer):
|
|
btype = 'colordata'
|
|
modename = 'colortext'
|
|
color_re = re.compile(r'\[([a-z:]+)\]')
|
|
def __init__(self, name, data, nl='\n'):
|
|
data2 = ColorHighlighter.color_re.sub('', data)
|
|
data2 = data2.replace('\\[', '[')
|
|
data2 = data2.replace('\\]', ']')
|
|
data2 = data2.replace('\\\\', '\\')
|
|
DataBuffer.__init__(self, name, data2, nl)
|
|
lines = data.split(self.nl)
|
|
self.highlights = {
|
|
'Colortext': ColorHighlighter(),
|
|
}
|
|
self.highlights['Colortext'].highlight(lines)
|
|
|
|
ABOUT_DATA = '''
|
|
[r:d:*]================================================================================
|
|
|
|
[y:d:*]************ ********** ****** ****** **** ******** *********
|
|
[y:d:*]************** ****************** ************* ********** ***********
|
|
[y:d:*]******* ***** ****** ***** **** **** ****** **** **** ***** ****
|
|
[y:d:*] *** *** *** *** *** **** **** **** *******
|
|
[y:d:*] *** *** *** *** *** **** **** **** *******
|
|
[y:d:*] ***** ***** ***** ***** **** **** ****** **** **** **** *****
|
|
[y:d:*] ************ ***** ***** **** ************* ********** ***********
|
|
[y:d:*] ********** ***** ***** **** ****** **** ******** *********
|
|
[y:d:*] ***
|
|
[y:d:*] *** [c:d:*]pmacs[d:d:*] is a python-based text editor by [c:d:*]Erik Osheim[d:d:*], [b:d:*](c) 2005-2008
|
|
[y:d:*]***** [c:d:*]pmacs[d:d:*] is available to you under the [c:d:*]GNU General Public License v2
|
|
[y:d:*]*****
|
|
[y:d:*]***** [d:d:*]to see all available commands use: [c:d:*]C-c M-h [b:d:*](show-bindings-buffer)
|
|
|
|
[r:d:*]================================================================================
|
|
'''
|
|
class AboutBuffer(ColorDataBuffer):
|
|
def __init__(self):
|
|
ColorDataBuffer.__init__(self, '*About*', ABOUT_DATA)
|