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- import re
- import string
-
- ###$ event <<expand-word>>
- ###$ win <Alt-slash>
- ###$ unix <Alt-slash>
-
-
- class AutoExpand:
- keydefs = {
- "<<expand-word>>": ["<Alt-slash>"],
- }
-
- unix_keydefs = {
- "<<expand-word>>": ["<Meta-slash>"],
- }
-
- menudefs = [
- (
- "edit",
- [
- ("E_xpand word", "<<expand-word>>"),
- ],
- ),
- ]
-
- wordchars = string.ascii_letters + string.digits + "_"
-
- def __init__(self, editwin):
- self.text = editwin.text
- self.text.wordlist = None # XXX what is this?
- self.state = None
-
- def expand_word_event(self, event):
- curinsert = self.text.index("insert")
- curline = self.text.get("insert linestart", "insert lineend")
- if not self.state:
- words = self.getwords()
- index = 0
- else:
- words, index, insert, line = self.state
- if insert != curinsert or line != curline:
- words = self.getwords()
- index = 0
- if not words:
- self.text.bell()
- return "break"
- word = self.getprevword()
- self.text.delete("insert - %d chars" % len(word), "insert")
- newword = words[index]
- index = (index + 1) % len(words)
- if index == 0:
- self.text.bell() # Warn we cycled around
- self.text.insert("insert", newword)
- curinsert = self.text.index("insert")
- curline = self.text.get("insert linestart", "insert lineend")
- self.state = words, index, curinsert, curline
- return "break"
-
- def getwords(self):
- word = self.getprevword()
- if not word:
- return []
- before = self.text.get("1.0", "insert wordstart")
- wbefore = re.findall(r"\b" + word + r"\w+\b", before)
- del before
- after = self.text.get("insert wordend", "end")
- wafter = re.findall(r"\b" + word + r"\w+\b", after)
- del after
- if not wbefore and not wafter:
- return []
- words = []
- dict = {}
- # search backwards through words before
- wbefore.reverse()
- for w in wbefore:
- if dict.get(w):
- continue
- words.append(w)
- dict[w] = w
- # search onwards through words after
- for w in wafter:
- if dict.get(w):
- continue
- words.append(w)
- dict[w] = w
- words.append(word)
- return words
-
- def getprevword(self):
- line = self.text.get("insert linestart", "insert")
- i = len(line)
- while i > 0 and line[i - 1] in self.wordchars:
- i = i - 1
- return line[i:]
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