cpython/Lib/idlelib/IdleHistory.py
Guido van Rossum 36e0a92442 Merged revisions 56443-56466 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk

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  r56454 | kurt.kaiser | 2007-07-18 22:26:14 -0700 (Wed, 18 Jul 2007) | 2 lines

  Make relative imports explicit for py3k
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  r56455 | kurt.kaiser | 2007-07-18 23:12:15 -0700 (Wed, 18 Jul 2007) | 2 lines

  Was modifying dict during iteration.
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  r56457 | guido.van.rossum | 2007-07-19 07:33:19 -0700 (Thu, 19 Jul 2007) | 2 lines

  Fix failing test.
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  r56466 | guido.van.rossum | 2007-07-19 20:58:16 -0700 (Thu, 19 Jul 2007) | 35 lines

  Merged revisions 56413-56465 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r56439 | georg.brandl | 2007-07-17 23:37:55 -0700 (Tue, 17 Jul 2007) | 2 lines

    Use "Unix" as platform name, not "UNIX".
  ........
    r56441 | guido.van.rossum | 2007-07-18 10:19:14 -0700 (Wed, 18 Jul 2007) | 3 lines

    SF patch# 1755885 by Kurt Kaiser: show location of Unicode escape errors.
    (Slightly tweaked for style and refcounts.)
  ........
    r56444 | kurt.kaiser | 2007-07-18 12:58:42 -0700 (Wed, 18 Jul 2007) | 2 lines

    Fix failing unicode test caused by change to ast.c at r56441
  ........
    r56451 | georg.brandl | 2007-07-18 15:36:53 -0700 (Wed, 18 Jul 2007) | 2 lines

    Add description for wave.setcomptype() values
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    r56456 | walter.doerwald | 2007-07-19 06:04:38 -0700 (Thu, 19 Jul 2007) | 3 lines

    Document that codecs.lookup() returns a CodecInfo object.
    (fixes SF bug #1754453).
  ........
    r56463 | facundo.batista | 2007-07-19 16:57:38 -0700 (Thu, 19 Jul 2007) | 6 lines


    Added a select.select call in the test server loop to make sure the
    socket is ready to be read from before attempting a read (this
    prevents an error 10035 on some Windows platforms). [GSoC - Alan
    McIntyre]
  ........
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2007-07-20 04:05:57 +00:00

88 lines
3.1 KiB
Python

from .configHandler import idleConf
class History:
def __init__(self, text, output_sep = "\n"):
self.text = text
self.history = []
self.history_prefix = None
self.history_pointer = None
self.output_sep = output_sep
self.cyclic = idleConf.GetOption("main", "History", "cyclic", 1, "bool")
text.bind("<<history-previous>>", self.history_prev)
text.bind("<<history-next>>", self.history_next)
def history_next(self, event):
self.history_do(0)
return "break"
def history_prev(self, event):
self.history_do(1)
return "break"
def _get_source(self, start, end):
# Get source code from start index to end index. Lines in the
# text control may be separated by sys.ps2 .
lines = self.text.get(start, end).split(self.output_sep)
return "\n".join(lines)
def _put_source(self, where, source):
output = self.output_sep.join(source.split("\n"))
self.text.insert(where, output)
def history_do(self, reverse):
nhist = len(self.history)
pointer = self.history_pointer
prefix = self.history_prefix
if pointer is not None and prefix is not None:
if self.text.compare("insert", "!=", "end-1c") or \
self._get_source("iomark", "end-1c") != self.history[pointer]:
pointer = prefix = None
if pointer is None or prefix is None:
prefix = self._get_source("iomark", "end-1c")
if reverse:
pointer = nhist
else:
if self.cyclic:
pointer = -1
else:
self.text.bell()
return
nprefix = len(prefix)
while 1:
if reverse:
pointer = pointer - 1
else:
pointer = pointer + 1
if pointer < 0 or pointer >= nhist:
self.text.bell()
if not self.cyclic and pointer < 0:
return
else:
if self._get_source("iomark", "end-1c") != prefix:
self.text.delete("iomark", "end-1c")
self._put_source("iomark", prefix)
pointer = prefix = None
break
item = self.history[pointer]
if item[:nprefix] == prefix and len(item) > nprefix:
self.text.delete("iomark", "end-1c")
self._put_source("iomark", item)
break
self.text.mark_set("insert", "end-1c")
self.text.see("insert")
self.text.tag_remove("sel", "1.0", "end")
self.history_pointer = pointer
self.history_prefix = prefix
def history_store(self, source):
source = source.strip()
if len(source) > 2:
# avoid duplicates
try:
self.history.remove(source)
except ValueError:
pass
self.history.append(source)
self.history_pointer = None
self.history_prefix = None