266 lines
10 KiB
Python
266 lines
10 KiB
Python
import time
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import re
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import keyword
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import builtins
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from tkinter import *
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from idlelib.Delegator import Delegator
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from idlelib.configHandler import idleConf
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DEBUG = False
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def any(name, alternates):
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"Return a named group pattern matching list of alternates."
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return "(?P<%s>" % name + "|".join(alternates) + ")"
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def make_pat():
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kw = r"\b" + any("KEYWORD", keyword.kwlist) + r"\b"
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builtinlist = [str(name) for name in dir(builtins)
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if not name.startswith('_') and \
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name not in keyword.kwlist]
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# self.file = open("file") :
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# 1st 'file' colorized normal, 2nd as builtin, 3rd as string
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builtin = r"([^.'\"\\#]\b|^)" + any("BUILTIN", builtinlist) + r"\b"
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comment = any("COMMENT", [r"#[^\n]*"])
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stringprefix = r"(\br|u|ur|R|U|UR|Ur|uR|b|B|br|Br|bR|BR|rb|rB|Rb|RB)?"
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sqstring = stringprefix + r"'[^'\\\n]*(\\.[^'\\\n]*)*'?"
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dqstring = stringprefix + r'"[^"\\\n]*(\\.[^"\\\n]*)*"?'
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sq3string = stringprefix + r"'''[^'\\]*((\\.|'(?!''))[^'\\]*)*(''')?"
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dq3string = stringprefix + r'"""[^"\\]*((\\.|"(?!""))[^"\\]*)*(""")?'
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string = any("STRING", [sq3string, dq3string, sqstring, dqstring])
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return kw + "|" + builtin + "|" + comment + "|" + string +\
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"|" + any("SYNC", [r"\n"])
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prog = re.compile(make_pat(), re.S)
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idprog = re.compile(r"\s+(\w+)", re.S)
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asprog = re.compile(r".*?\b(as)\b")
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class ColorDelegator(Delegator):
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def __init__(self):
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Delegator.__init__(self)
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self.prog = prog
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self.idprog = idprog
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self.asprog = asprog
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self.LoadTagDefs()
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def setdelegate(self, delegate):
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if self.delegate is not None:
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self.unbind("<<toggle-auto-coloring>>")
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Delegator.setdelegate(self, delegate)
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if delegate is not None:
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self.config_colors()
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self.bind("<<toggle-auto-coloring>>", self.toggle_colorize_event)
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self.notify_range("1.0", "end")
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def config_colors(self):
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for tag, cnf in self.tagdefs.items():
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if cnf:
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self.tag_configure(tag, **cnf)
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self.tag_raise('sel')
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def LoadTagDefs(self):
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theme = idleConf.GetOption('main','Theme','name')
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self.tagdefs = {
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"COMMENT": idleConf.GetHighlight(theme, "comment"),
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"KEYWORD": idleConf.GetHighlight(theme, "keyword"),
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"BUILTIN": idleConf.GetHighlight(theme, "builtin"),
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"STRING": idleConf.GetHighlight(theme, "string"),
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"DEFINITION": idleConf.GetHighlight(theme, "definition"),
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"SYNC": {'background':None,'foreground':None},
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"TODO": {'background':None,'foreground':None},
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"BREAK": idleConf.GetHighlight(theme, "break"),
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"ERROR": idleConf.GetHighlight(theme, "error"),
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# The following is used by ReplaceDialog:
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"hit": idleConf.GetHighlight(theme, "hit"),
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}
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if DEBUG: print('tagdefs',self.tagdefs)
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def insert(self, index, chars, tags=None):
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index = self.index(index)
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self.delegate.insert(index, chars, tags)
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self.notify_range(index, index + "+%dc" % len(chars))
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def delete(self, index1, index2=None):
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index1 = self.index(index1)
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self.delegate.delete(index1, index2)
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self.notify_range(index1)
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after_id = None
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allow_colorizing = True
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colorizing = False
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def notify_range(self, index1, index2=None):
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self.tag_add("TODO", index1, index2)
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if self.after_id:
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if DEBUG: print("colorizing already scheduled")
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return
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if self.colorizing:
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self.stop_colorizing = True
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if DEBUG: print("stop colorizing")
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if self.allow_colorizing:
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if DEBUG: print("schedule colorizing")
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self.after_id = self.after(1, self.recolorize)
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close_when_done = None # Window to be closed when done colorizing
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def close(self, close_when_done=None):
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if self.after_id:
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after_id = self.after_id
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self.after_id = None
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if DEBUG: print("cancel scheduled recolorizer")
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self.after_cancel(after_id)
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self.allow_colorizing = False
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self.stop_colorizing = True
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if close_when_done:
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if not self.colorizing:
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close_when_done.destroy()
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else:
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self.close_when_done = close_when_done
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def toggle_colorize_event(self, event):
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if self.after_id:
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after_id = self.after_id
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self.after_id = None
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if DEBUG: print("cancel scheduled recolorizer")
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self.after_cancel(after_id)
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if self.allow_colorizing and self.colorizing:
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if DEBUG: print("stop colorizing")
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self.stop_colorizing = True
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self.allow_colorizing = not self.allow_colorizing
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if self.allow_colorizing and not self.colorizing:
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self.after_id = self.after(1, self.recolorize)
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if DEBUG:
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print("auto colorizing turned",\
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self.allow_colorizing and "on" or "off")
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return "break"
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def recolorize(self):
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self.after_id = None
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if not self.delegate:
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if DEBUG: print("no delegate")
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return
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if not self.allow_colorizing:
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if DEBUG: print("auto colorizing is off")
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return
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if self.colorizing:
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if DEBUG: print("already colorizing")
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return
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try:
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self.stop_colorizing = False
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self.colorizing = True
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if DEBUG: print("colorizing...")
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t0 = time.perf_counter()
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self.recolorize_main()
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t1 = time.perf_counter()
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if DEBUG: print("%.3f seconds" % (t1-t0))
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finally:
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self.colorizing = False
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if self.allow_colorizing and self.tag_nextrange("TODO", "1.0"):
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if DEBUG: print("reschedule colorizing")
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self.after_id = self.after(1, self.recolorize)
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if self.close_when_done:
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top = self.close_when_done
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self.close_when_done = None
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top.destroy()
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def recolorize_main(self):
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next = "1.0"
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while True:
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item = self.tag_nextrange("TODO", next)
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if not item:
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break
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head, tail = item
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self.tag_remove("SYNC", head, tail)
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item = self.tag_prevrange("SYNC", head)
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if item:
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head = item[1]
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else:
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head = "1.0"
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chars = ""
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next = head
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lines_to_get = 1
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ok = False
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while not ok:
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mark = next
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next = self.index(mark + "+%d lines linestart" %
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lines_to_get)
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lines_to_get = min(lines_to_get * 2, 100)
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ok = "SYNC" in self.tag_names(next + "-1c")
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line = self.get(mark, next)
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##print head, "get", mark, next, "->", repr(line)
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if not line:
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return
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for tag in self.tagdefs:
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self.tag_remove(tag, mark, next)
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chars = chars + line
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m = self.prog.search(chars)
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while m:
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for key, value in m.groupdict().items():
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if value:
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a, b = m.span(key)
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self.tag_add(key,
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head + "+%dc" % a,
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head + "+%dc" % b)
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if value in ("def", "class"):
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m1 = self.idprog.match(chars, b)
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if m1:
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a, b = m1.span(1)
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self.tag_add("DEFINITION",
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head + "+%dc" % a,
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head + "+%dc" % b)
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elif value == "import":
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# color all the "as" words on same line, except
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# if in a comment; cheap approximation to the
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# truth
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if '#' in chars:
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endpos = chars.index('#')
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else:
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endpos = len(chars)
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while True:
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m1 = self.asprog.match(chars, b, endpos)
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if not m1:
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break
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a, b = m1.span(1)
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self.tag_add("KEYWORD",
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head + "+%dc" % a,
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head + "+%dc" % b)
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m = self.prog.search(chars, m.end())
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if "SYNC" in self.tag_names(next + "-1c"):
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head = next
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chars = ""
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else:
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ok = False
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if not ok:
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# We're in an inconsistent state, and the call to
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# update may tell us to stop. It may also change
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# the correct value for "next" (since this is a
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# line.col string, not a true mark). So leave a
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# crumb telling the next invocation to resume here
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# in case update tells us to leave.
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self.tag_add("TODO", next)
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self.update()
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if self.stop_colorizing:
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if DEBUG: print("colorizing stopped")
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return
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def removecolors(self):
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for tag in self.tagdefs:
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self.tag_remove(tag, "1.0", "end")
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def main():
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from idlelib.Percolator import Percolator
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root = Tk()
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root.wm_protocol("WM_DELETE_WINDOW", root.quit)
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text = Text(background="white")
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text.pack(expand=1, fill="both")
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text.focus_set()
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p = Percolator(text)
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d = ColorDelegator()
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p.insertfilter(d)
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root.mainloop()
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if __name__ == "__main__":
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main()
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