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# -*- coding: iso-8859-1 -*-
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import curses, fcntl, signal, struct, tty, textwrap
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import astyle, ipipe
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# Python 2.3 compatibility
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try:
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set
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except NameError:
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import sets
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set = sets.Set
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_ibrowse_help = """
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down
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Move the cursor to the next line.
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up
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Move the cursor to the previous line.
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pagedown
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Move the cursor down one page (minus overlap).
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pageup
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Move the cursor up one page (minus overlap).
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left
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Move the cursor left.
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right
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Move the cursor right.
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home
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Move the cursor to the first column.
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end
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Move the cursor to the last column.
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prevattr
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Move the cursor one attribute column to the left.
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nextattr
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Move the cursor one attribute column to the right.
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pick
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'Pick' the object under the cursor (i.e. the row the cursor is on). This
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leaves the browser and returns the picked object to the caller. (In IPython
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this object will be available as the '_' variable.)
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pickattr
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'Pick' the attribute under the cursor (i.e. the row/column the cursor is on).
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pickallattrs
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Pick' the complete column under the cursor (i.e. the attribute under the
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cursor) from all currently fetched objects. These attributes will be returned
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as a list.
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tooglemark
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Mark/unmark the object under the cursor. Marked objects have a '!' after the
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row number).
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pickmarked
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'Pick' marked objects. Marked objects will be returned as a list.
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pickmarkedattr
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'Pick' the attribute under the cursor from all marked objects (This returns a
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list).
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enterdefault
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Enter the object under the cursor. (what this mean depends on the object
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itself (i.e. how it implements the '__xiter__' method). This opens a new
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browser 'level'.
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enter
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Enter the object under the cursor. If the object provides different enter
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modes a menu of all modes will be presented; choose one and enter it (via the
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'enter' or 'enterdefault' command).
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enterattr
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Enter the attribute under the cursor.
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leave
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Leave the current browser level and go back to the previous one.
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detail
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Show a detail view of the object under the cursor. This shows the name, type,
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doc string and value of the object attributes (and it might show more
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attributes than in the list view, depending on the object).
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detailattr
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Show a detail view of the attribute under the cursor.
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markrange
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Mark all objects from the last marked object before the current cursor
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position to the cursor position.
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sortattrasc
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Sort the objects (in ascending order) using the attribute under the cursor as
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the sort key.
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sortattrdesc
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Sort the objects (in descending order) using the attribute under the cursor as
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the sort key.
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hideattr
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Hide the attribute under the cursor.
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unhideattrs
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Make all attributes visible again.
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goto
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Jump to a row. The row number can be entered at the bottom of the screen.
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find
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Search forward for a row. At the bottom of the screen the condition can be
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entered.
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findbackwards
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Search backward for a row. At the bottom of the screen the condition can be
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entered.
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help
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This screen.
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"""
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class UnassignedKeyError(Exception):
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"""
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Exception that is used for reporting unassigned keys.
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"""
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class UnknownCommandError(Exception):
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"""
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Exception that is used for reporting unknown command (this should never
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happen).
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"""
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class CommandError(Exception):
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"""
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Exception that is used for reporting that a command can't be executed.
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"""
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class Keymap(dict):
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"""
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Stores mapping of keys to commands.
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"""
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def __init__(self):
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self._keymap = {}
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def __setitem__(self, key, command):
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if isinstance(key, str):
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for c in key:
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dict.__setitem__(self, ord(c), command)
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else:
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dict.__setitem__(self, key, command)
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def register(self, command, *keys):
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for key in keys:
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self[key] = command
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def __getitem__(self, key):
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if isinstance(key, str):
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key = ord(key)
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return dict.__getitem__(self, key)
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def get(self, key, default=None):
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if isinstance(key, str):
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key = ord(key)
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return dict.get(self, key, default)
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def findkey(self, command, default=ipipe.noitem):
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for (key, commandcandidate) in self.iteritems():
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if commandcandidate == command:
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return key
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if default is ipipe.noitem:
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raise KeyError(command)
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return default
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class _BrowserCachedItem(object):
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# This is used internally by ``ibrowse`` to store a item together with its
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# marked status.
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__slots__ = ("item", "marked")
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def __init__(self, item):
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self.item = item
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self.marked = False
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class _BrowserHelp(object):
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style_header = astyle.Style.fromstr("red:blacK")
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# This is used internally by ``ibrowse`` for displaying the help screen.
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def __init__(self, browser):
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self.browser = browser
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def __xrepr__(self, mode):
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yield (-1, True)
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if mode == "header" or mode == "footer":
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yield (astyle.style_default, "ibrowse help screen")
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else:
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yield (astyle.style_default, repr(self))
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def __xiter__(self, mode):
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# Get reverse key mapping
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allkeys = {}
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for (key, cmd) in self.browser.keymap.iteritems():
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allkeys.setdefault(cmd, []).append(key)
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fields = ("key", "description")
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for (i, command) in enumerate(_ibrowse_help.strip().split("\n\n")):
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if i:
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yield ipipe.Fields(fields, key="", description="")
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(name, description) = command.split("\n", 1)
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keys = allkeys.get(name, [])
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lines = textwrap.wrap(description, 60)
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yield ipipe.Fields(fields, description=astyle.Text((self.style_header, name)))
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for i in xrange(max(len(keys), len(lines))):
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try:
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key = self.browser.keylabel(keys[i])
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except IndexError:
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key = ""
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try:
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line = lines[i]
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except IndexError:
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line = ""
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yield ipipe.Fields(fields, key=key, description=line)
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class _BrowserLevel(object):
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# This is used internally to store the state (iterator, fetch items,
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# position of cursor and screen, etc.) of one browser level
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# An ``ibrowse`` object keeps multiple ``_BrowserLevel`` objects in
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# a stack.
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def __init__(self, browser, input, iterator, mainsizey, *attrs):
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self.browser = browser
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self.input = input
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self.header = [x for x in ipipe.xrepr(input, "header") if not isinstance(x[0], int)]
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# iterator for the input
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self.iterator = iterator
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# is the iterator exhausted?
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self.exhausted = False
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# attributes to be display (autodetected if empty)
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self.attrs = attrs
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# fetched items (+ marked flag)
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self.items = ipipe.deque()
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# Number of marked objects
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self.marked = 0
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# Vertical cursor position
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self.cury = 0
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# Horizontal cursor position
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self.curx = 0
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# Index of first data column
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self.datastartx = 0
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# Index of first data line
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self.datastarty = 0
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# height of the data display area
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self.mainsizey = mainsizey
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# width of the data display area (changes when scrolling)
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self.mainsizex = 0
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# Size of row number (changes when scrolling)
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self.numbersizex = 0
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# Attribute names to display (in this order)
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self.displayattrs = []
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# index and name of attribute under the cursor
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self.displayattr = (None, ipipe.noitem)
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# Maps attribute names to column widths
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self.colwidths = {}
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# Set of hidden attributes
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self.hiddenattrs = set()
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# This takes care of all the caches etc.
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self.moveto(0, 0, refresh=True)
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def fetch(self, count):
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# Try to fill ``self.items`` with at least ``count`` objects.
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have = len(self.items)
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while not self.exhausted and have < count:
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try:
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item = self.iterator.next()
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except StopIteration:
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self.exhausted = True
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break
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else:
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have += 1
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self.items.append(_BrowserCachedItem(item))
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def calcdisplayattrs(self):
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# Calculate which attributes are available from the objects that are
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# currently visible on screen (and store it in ``self.displayattrs``)
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attrnames = set()
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self.displayattrs = []
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if self.attrs:
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# If the browser object specifies a fixed list of attributes,
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# simply use it (removing hidden attributes).
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for attrname in self.attrs:
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if attrname not in attrnames and attrname not in self.hiddenattrs:
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self.displayattrs.append(attrname)
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attrnames.add(attrname)
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else:
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endy = min(self.datastarty+self.mainsizey, len(self.items))
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for i in xrange(self.datastarty, endy):
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for attrname in ipipe.xattrs(self.items[i].item, "default"):
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if attrname not in attrnames and attrname not in self.hiddenattrs:
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self.displayattrs.append(attrname)
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attrnames.add(attrname)
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def getrow(self, i):
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# Return a dictinary with the attributes for the object
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# ``self.items[i]``. Attribute names are taken from
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# ``self.displayattrs`` so ``calcdisplayattrs()`` must have been
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# called before.
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row = {}
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item = self.items[i].item
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for attrname in self.displayattrs:
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try:
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value = ipipe._getattr(item, attrname, ipipe.noitem)
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except (KeyboardInterrupt, SystemExit):
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raise
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except Exception, exc:
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value = exc
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# only store attribute if it exists (or we got an exception)
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if value is not ipipe.noitem:
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# remember alignment, length and colored text
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row[attrname] = ipipe.xformat(value, "cell", self.browser.maxattrlength)
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return row
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def calcwidths(self):
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# Recalculate the displayed fields and their widths.
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# ``calcdisplayattrs()'' must have been called and the cache
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# for attributes of the objects on screen (``self.displayrows``)
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# must have been filled. This returns a dictionary mapping
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# column names to widths.
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self.colwidths = {}
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for row in self.displayrows:
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for attrname in self.displayattrs:
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try:
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length = row[attrname][1]
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except KeyError:
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length = 0
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# always add attribute to colwidths, even if it doesn't exist
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if attrname not in self.colwidths:
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self.colwidths[attrname] = len(ipipe._attrname(attrname))
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newwidth = max(self.colwidths[attrname], length)
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self.colwidths[attrname] = newwidth
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# How many characters do we need to paint the largest item number?
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self.numbersizex = len(str(self.datastarty+self.mainsizey-1))
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# How must space have we got to display data?
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self.mainsizex = self.browser.scrsizex-self.numbersizex-3
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# width of all columns
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self.datasizex = sum(self.colwidths.itervalues()) + len(self.colwidths)
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def calcdisplayattr(self):
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# Find out which attribute the cursor is on and store this
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# information in ``self.displayattr``.
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pos = 0
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for (i, attrname) in enumerate(self.displayattrs):
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if pos+self.colwidths[attrname] >= self.curx:
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self.displayattr = (i, attrname)
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break
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pos += self.colwidths[attrname]+1
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else:
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self.displayattr = (None, ipipe.noitem)
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def moveto(self, x, y, refresh=False):
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# Move the cursor to the position ``(x,y)`` (in data coordinates,
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# not in screen coordinates). If ``refresh`` is true, all cached
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# values will be recalculated (e.g. because the list has been
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# resorted, so screen positions etc. are no longer valid).
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olddatastarty = self.datastarty
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oldx = self.curx
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oldy = self.cury
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x = int(x+0.5)
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y = int(y+0.5)
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newx = x # remember where we wanted to move
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newy = y # remember where we wanted to move
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scrollbordery = min(self.browser.scrollbordery, self.mainsizey//2)
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scrollborderx = min(self.browser.scrollborderx, self.mainsizex//2)
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# Make sure that the cursor didn't leave the main area vertically
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if y < 0:
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y = 0
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# try to get enough items to fill the screen
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self.fetch(max(y+scrollbordery+1, self.mainsizey))
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if y >= len(self.items):
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y = max(0, len(self.items)-1)
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# Make sure that the cursor stays on screen vertically
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if y < self.datastarty+scrollbordery:
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self.datastarty = max(0, y-scrollbordery)
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elif y >= self.datastarty+self.mainsizey-scrollbordery:
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self.datastarty = max(0, min(y-self.mainsizey+scrollbordery+1,
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len(self.items)-self.mainsizey))
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if refresh: # Do we need to refresh the complete display?
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self.calcdisplayattrs()
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endy = min(self.datastarty+self.mainsizey, len(self.items))
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self.displayrows = map(self.getrow, xrange(self.datastarty, endy))
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self.calcwidths()
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# Did we scroll vertically => update displayrows
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# and various other attributes
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elif self.datastarty != olddatastarty:
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# Recalculate which attributes we have to display
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olddisplayattrs = self.displayattrs
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self.calcdisplayattrs()
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# If there are new attributes, recreate the cache
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if self.displayattrs != olddisplayattrs:
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endy = min(self.datastarty+self.mainsizey, len(self.items))
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self.displayrows = map(self.getrow, xrange(self.datastarty, endy))
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elif self.datastarty<olddatastarty: # we did scroll up
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# drop rows from the end
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del self.displayrows[self.datastarty-olddatastarty:]
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# fetch new items
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for i in xrange(olddatastarty-1,
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self.datastarty-1, -1):
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try:
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row = self.getrow(i)
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except IndexError:
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# we didn't have enough objects to fill the screen
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break
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self.displayrows.insert(0, row)
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else: # we did scroll down
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# drop rows from the start
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del self.displayrows[:self.datastarty-olddatastarty]
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# fetch new items
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for i in xrange(olddatastarty+self.mainsizey,
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self.datastarty+self.mainsizey):
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try:
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row = self.getrow(i)
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except IndexError:
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# we didn't have enough objects to fill the screen
|
|
|
break
|
|
|
self.displayrows.append(row)
|
|
|
self.calcwidths()
|
|
|
|
|
|
# Make sure that the cursor didn't leave the data area horizontally
|
|
|
if x < 0:
|
|
|
x = 0
|
|
|
elif x >= self.datasizex:
|
|
|
x = max(0, self.datasizex-1)
|
|
|
|
|
|
# Make sure that the cursor stays on screen horizontally
|
|
|
if x < self.datastartx+scrollborderx:
|
|
|
self.datastartx = max(0, x-scrollborderx)
|
|
|
elif x >= self.datastartx+self.mainsizex-scrollborderx:
|
|
|
self.datastartx = max(0, min(x-self.mainsizex+scrollborderx+1,
|
|
|
self.datasizex-self.mainsizex))
|
|
|
|
|
|
if x == oldx and y == oldy and (x != newx or y != newy): # couldn't move
|
|
|
self.browser.beep()
|
|
|
else:
|
|
|
self.curx = x
|
|
|
self.cury = y
|
|
|
self.calcdisplayattr()
|
|
|
|
|
|
def sort(self, key, reverse=False):
|
|
|
"""
|
|
|
Sort the currently list of items using the key function ``key``. If
|
|
|
``reverse`` is true the sort order is reversed.
|
|
|
"""
|
|
|
curitem = self.items[self.cury] # Remember where the cursor is now
|
|
|
|
|
|
# Sort items
|
|
|
def realkey(item):
|
|
|
return key(item.item)
|
|
|
self.items = ipipe.deque(sorted(self.items, key=realkey, reverse=reverse))
|
|
|
|
|
|
# Find out where the object under the cursor went
|
|
|
cury = self.cury
|
|
|
for (i, item) in enumerate(self.items):
|
|
|
if item is curitem:
|
|
|
cury = i
|
|
|
break
|
|
|
|
|
|
self.moveto(self.curx, cury, refresh=True)
|
|
|
|
|
|
|
|
|
class _CommandInput(object):
|
|
|
keymap = Keymap()
|
|
|
keymap.register("left", curses.KEY_LEFT)
|
|
|
keymap.register("right", curses.KEY_RIGHT)
|
|
|
keymap.register("home", curses.KEY_HOME, "\x01") # Ctrl-A
|
|
|
keymap.register("end", curses.KEY_END, "\x05") # Ctrl-E
|
|
|
# FIXME: What's happening here?
|
|
|
keymap.register("backspace", curses.KEY_BACKSPACE, "x\x08\x7f")
|
|
|
keymap.register("delete", curses.KEY_DC)
|
|
|
keymap.register("delend", 0x0b) # Ctrl-K
|
|
|
keymap.register("execute", "\r\n")
|
|
|
keymap.register("up", curses.KEY_UP)
|
|
|
keymap.register("down", curses.KEY_DOWN)
|
|
|
keymap.register("incsearchup", curses.KEY_PPAGE)
|
|
|
keymap.register("incsearchdown", curses.KEY_NPAGE)
|
|
|
keymap.register("exit", "\x18"), # Ctrl-X
|
|
|
|
|
|
def __init__(self, prompt):
|
|
|
self.prompt = prompt
|
|
|
self.history = []
|
|
|
self.maxhistory = 100
|
|
|
self.input = ""
|
|
|
self.curx = 0
|
|
|
self.cury = -1 # blank line
|
|
|
|
|
|
def start(self):
|
|
|
self.input = ""
|
|
|
self.curx = 0
|
|
|
self.cury = -1 # blank line
|
|
|
|
|
|
def handlekey(self, browser, key):
|
|
|
cmdname = self.keymap.get(key, None)
|
|
|
if cmdname is not None:
|
|
|
cmdfunc = getattr(self, "cmd_%s" % cmdname, None)
|
|
|
if cmdfunc is not None:
|
|
|
return cmdfunc(browser)
|
|
|
curses.beep()
|
|
|
elif key != -1:
|
|
|
try:
|
|
|
char = chr(key)
|
|
|
except ValueError:
|
|
|
curses.beep()
|
|
|
else:
|
|
|
return self.handlechar(browser, char)
|
|
|
|
|
|
def handlechar(self, browser, char):
|
|
|
self.input = self.input[:self.curx] + char + self.input[self.curx:]
|
|
|
self.curx += 1
|
|
|
return True
|
|
|
|
|
|
def dohistory(self):
|
|
|
self.history.insert(0, self.input)
|
|
|
del self.history[:-self.maxhistory]
|
|
|
|
|
|
def cmd_backspace(self, browser):
|
|
|
if self.curx:
|
|
|
self.input = self.input[:self.curx-1] + self.input[self.curx:]
|
|
|
self.curx -= 1
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_delete(self, browser):
|
|
|
if self.curx<len(self.input):
|
|
|
self.input = self.input[:self.curx] + self.input[self.curx+1:]
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_delend(self, browser):
|
|
|
if self.curx<len(self.input):
|
|
|
self.input = self.input[:self.curx]
|
|
|
return True
|
|
|
|
|
|
def cmd_left(self, browser):
|
|
|
if self.curx:
|
|
|
self.curx -= 1
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_right(self, browser):
|
|
|
if self.curx < len(self.input):
|
|
|
self.curx += 1
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_home(self, browser):
|
|
|
if self.curx:
|
|
|
self.curx = 0
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_end(self, browser):
|
|
|
if self.curx < len(self.input):
|
|
|
self.curx = len(self.input)
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_up(self, browser):
|
|
|
if self.cury < len(self.history)-1:
|
|
|
self.cury += 1
|
|
|
self.input = self.history[self.cury]
|
|
|
self.curx = len(self.input)
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_down(self, browser):
|
|
|
if self.cury >= 0:
|
|
|
self.cury -= 1
|
|
|
if self.cury>=0:
|
|
|
self.input = self.history[self.cury]
|
|
|
else:
|
|
|
self.input = ""
|
|
|
self.curx = len(self.input)
|
|
|
return True
|
|
|
else:
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_incsearchup(self, browser):
|
|
|
prefix = self.input[:self.curx]
|
|
|
cury = self.cury
|
|
|
while True:
|
|
|
cury += 1
|
|
|
if cury >= len(self.history):
|
|
|
break
|
|
|
if self.history[cury].startswith(prefix):
|
|
|
self.input = self.history[cury]
|
|
|
self.cury = cury
|
|
|
return True
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_incsearchdown(self, browser):
|
|
|
prefix = self.input[:self.curx]
|
|
|
cury = self.cury
|
|
|
while True:
|
|
|
cury -= 1
|
|
|
if cury <= 0:
|
|
|
break
|
|
|
if self.history[cury].startswith(prefix):
|
|
|
self.input = self.history[self.cury]
|
|
|
self.cury = cury
|
|
|
return True
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_exit(self, browser):
|
|
|
browser.mode = "default"
|
|
|
return True
|
|
|
|
|
|
def cmd_execute(self, browser):
|
|
|
raise NotImplementedError
|
|
|
|
|
|
|
|
|
class _CommandGoto(_CommandInput):
|
|
|
def __init__(self):
|
|
|
_CommandInput.__init__(self, "goto object #")
|
|
|
|
|
|
def handlechar(self, browser, char):
|
|
|
# Only accept digits
|
|
|
if not "0" <= char <= "9":
|
|
|
curses.beep()
|
|
|
else:
|
|
|
return _CommandInput.handlechar(self, browser, char)
|
|
|
|
|
|
def cmd_execute(self, browser):
|
|
|
level = browser.levels[-1]
|
|
|
if self.input:
|
|
|
self.dohistory()
|
|
|
level.moveto(level.curx, int(self.input))
|
|
|
browser.mode = "default"
|
|
|
return True
|
|
|
|
|
|
|
|
|
class _CommandFind(_CommandInput):
|
|
|
def __init__(self):
|
|
|
_CommandInput.__init__(self, "find expression")
|
|
|
|
|
|
def cmd_execute(self, browser):
|
|
|
level = browser.levels[-1]
|
|
|
if self.input:
|
|
|
self.dohistory()
|
|
|
while True:
|
|
|
cury = level.cury
|
|
|
level.moveto(level.curx, cury+1)
|
|
|
if cury == level.cury:
|
|
|
curses.beep()
|
|
|
break # hit end
|
|
|
item = level.items[level.cury].item
|
|
|
try:
|
|
|
globals = ipipe.getglobals(None)
|
|
|
if eval(self.input, globals, ipipe.AttrNamespace(item)):
|
|
|
break # found something
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
browser.report(exc)
|
|
|
curses.beep()
|
|
|
break # break on error
|
|
|
browser.mode = "default"
|
|
|
return True
|
|
|
|
|
|
|
|
|
class _CommandFindBackwards(_CommandInput):
|
|
|
def __init__(self):
|
|
|
_CommandInput.__init__(self, "find backwards expression")
|
|
|
|
|
|
def cmd_execute(self, browser):
|
|
|
level = browser.levels[-1]
|
|
|
if self.input:
|
|
|
self.dohistory()
|
|
|
while level.cury:
|
|
|
level.moveto(level.curx, level.cury-1)
|
|
|
item = level.items[level.cury].item
|
|
|
try:
|
|
|
globals = ipipe.getglobals(None)
|
|
|
if eval(self.input, globals, ipipe.AttrNamespace(item)):
|
|
|
break # found something
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
browser.report(exc)
|
|
|
curses.beep()
|
|
|
break # break on error
|
|
|
else:
|
|
|
curses.beep()
|
|
|
browser.mode = "default"
|
|
|
return True
|
|
|
|
|
|
|
|
|
class ibrowse(ipipe.Display):
|
|
|
# Show this many lines from the previous screen when paging horizontally
|
|
|
pageoverlapx = 1
|
|
|
|
|
|
# Show this many lines from the previous screen when paging vertically
|
|
|
pageoverlapy = 1
|
|
|
|
|
|
# Start scrolling when the cursor is less than this number of columns
|
|
|
# away from the left or right screen edge
|
|
|
scrollborderx = 10
|
|
|
|
|
|
# Start scrolling when the cursor is less than this number of lines
|
|
|
# away from the top or bottom screen edge
|
|
|
scrollbordery = 5
|
|
|
|
|
|
# Accelerate by this factor when scrolling horizontally
|
|
|
acceleratex = 1.05
|
|
|
|
|
|
# Accelerate by this factor when scrolling vertically
|
|
|
acceleratey = 1.05
|
|
|
|
|
|
# The maximum horizontal scroll speed
|
|
|
# (as a factor of the screen width (i.e. 0.5 == half a screen width)
|
|
|
maxspeedx = 0.5
|
|
|
|
|
|
# The maximum vertical scroll speed
|
|
|
# (as a factor of the screen height (i.e. 0.5 == half a screen height)
|
|
|
maxspeedy = 0.5
|
|
|
|
|
|
# The maximum number of header lines for browser level
|
|
|
# if the nesting is deeper, only the innermost levels are displayed
|
|
|
maxheaders = 5
|
|
|
|
|
|
# The approximate maximum length of a column entry
|
|
|
maxattrlength = 200
|
|
|
|
|
|
# Styles for various parts of the GUI
|
|
|
style_objheadertext = astyle.Style.fromstr("white:black:bold|reverse")
|
|
|
style_objheadernumber = astyle.Style.fromstr("white:blue:bold|reverse")
|
|
|
style_objheaderobject = astyle.Style.fromstr("white:black:reverse")
|
|
|
style_colheader = astyle.Style.fromstr("blue:white:reverse")
|
|
|
style_colheaderhere = astyle.Style.fromstr("green:black:bold|reverse")
|
|
|
style_colheadersep = astyle.Style.fromstr("blue:black:reverse")
|
|
|
style_number = astyle.Style.fromstr("blue:white:reverse")
|
|
|
style_numberhere = astyle.Style.fromstr("green:black:bold|reverse")
|
|
|
style_sep = astyle.Style.fromstr("blue:black")
|
|
|
style_data = astyle.Style.fromstr("white:black")
|
|
|
style_datapad = astyle.Style.fromstr("blue:black:bold")
|
|
|
style_footer = astyle.Style.fromstr("black:white")
|
|
|
style_report = astyle.Style.fromstr("white:black")
|
|
|
|
|
|
# Column separator in header
|
|
|
headersepchar = "|"
|
|
|
|
|
|
# Character for padding data cell entries
|
|
|
datapadchar = "."
|
|
|
|
|
|
# Column separator in data area
|
|
|
datasepchar = "|"
|
|
|
|
|
|
# Character to use for "empty" cell (i.e. for non-existing attributes)
|
|
|
nodatachar = "-"
|
|
|
|
|
|
# Prompts for modes that require keyboard input
|
|
|
prompts = {
|
|
|
"goto": _CommandGoto(),
|
|
|
"find": _CommandFind(),
|
|
|
"findbackwards": _CommandFindBackwards()
|
|
|
}
|
|
|
|
|
|
# Maps curses key codes to "function" names
|
|
|
keymap = Keymap()
|
|
|
keymap.register("quit", "q")
|
|
|
keymap.register("up", curses.KEY_UP)
|
|
|
keymap.register("down", curses.KEY_DOWN)
|
|
|
keymap.register("pageup", curses.KEY_PPAGE)
|
|
|
keymap.register("pagedown", curses.KEY_NPAGE)
|
|
|
keymap.register("left", curses.KEY_LEFT)
|
|
|
keymap.register("right", curses.KEY_RIGHT)
|
|
|
keymap.register("home", curses.KEY_HOME, "\x01")
|
|
|
keymap.register("end", curses.KEY_END, "\x05")
|
|
|
keymap.register("prevattr", "<\x1b")
|
|
|
keymap.register("nextattr", ">\t")
|
|
|
keymap.register("pick", "p")
|
|
|
keymap.register("pickattr", "P")
|
|
|
keymap.register("pickallattrs", "C")
|
|
|
keymap.register("pickmarked", "m")
|
|
|
keymap.register("pickmarkedattr", "M")
|
|
|
keymap.register("enterdefault", "\r\n")
|
|
|
# FIXME: What's happening here?
|
|
|
keymap.register("leave", curses.KEY_BACKSPACE, "x\x08\x7f")
|
|
|
keymap.register("hideattr", "h")
|
|
|
keymap.register("unhideattrs", "H")
|
|
|
keymap.register("help", "?")
|
|
|
keymap.register("enter", "e")
|
|
|
keymap.register("enterattr", "E")
|
|
|
keymap.register("detail", "d")
|
|
|
keymap.register("detailattr", "D")
|
|
|
keymap.register("tooglemark", " ")
|
|
|
keymap.register("markrange", "r")
|
|
|
keymap.register("sortattrasc", "v")
|
|
|
keymap.register("sortattrdesc", "V")
|
|
|
keymap.register("goto", "g")
|
|
|
keymap.register("find", "f")
|
|
|
keymap.register("findbackwards", "b")
|
|
|
|
|
|
def __init__(self, *attrs):
|
|
|
"""
|
|
|
Create a new browser. If ``attrs`` is not empty, it is the list
|
|
|
of attributes that will be displayed in the browser, otherwise
|
|
|
these will be determined by the objects on screen.
|
|
|
"""
|
|
|
self.attrs = attrs
|
|
|
|
|
|
# Stack of browser levels
|
|
|
self.levels = []
|
|
|
# how many colums to scroll (Changes when accelerating)
|
|
|
self.stepx = 1.
|
|
|
|
|
|
# how many rows to scroll (Changes when accelerating)
|
|
|
self.stepy = 1.
|
|
|
|
|
|
# Beep on the edges of the data area? (Will be set to ``False``
|
|
|
# once the cursor hits the edge of the screen, so we don't get
|
|
|
# multiple beeps).
|
|
|
self._dobeep = True
|
|
|
|
|
|
# Cache for registered ``curses`` colors and styles.
|
|
|
self._styles = {}
|
|
|
self._colors = {}
|
|
|
self._maxcolor = 1
|
|
|
|
|
|
# How many header lines do we want to paint (the numbers of levels
|
|
|
# we have, but with an upper bound)
|
|
|
self._headerlines = 1
|
|
|
|
|
|
# Index of first header line
|
|
|
self._firstheaderline = 0
|
|
|
|
|
|
# curses window
|
|
|
self.scr = None
|
|
|
# report in the footer line (error, executed command etc.)
|
|
|
self._report = None
|
|
|
|
|
|
# value to be returned to the caller (set by commands)
|
|
|
self.returnvalue = None
|
|
|
|
|
|
# The mode the browser is in
|
|
|
# e.g. normal browsing or entering an argument for a command
|
|
|
self.mode = "default"
|
|
|
|
|
|
# set by the SIGWINCH signal handler
|
|
|
self.resized = False
|
|
|
|
|
|
def nextstepx(self, step):
|
|
|
"""
|
|
|
Accelerate horizontally.
|
|
|
"""
|
|
|
return max(1., min(step*self.acceleratex,
|
|
|
self.maxspeedx*self.levels[-1].mainsizex))
|
|
|
|
|
|
def nextstepy(self, step):
|
|
|
"""
|
|
|
Accelerate vertically.
|
|
|
"""
|
|
|
return max(1., min(step*self.acceleratey,
|
|
|
self.maxspeedy*self.levels[-1].mainsizey))
|
|
|
|
|
|
def getstyle(self, style):
|
|
|
"""
|
|
|
Register the ``style`` with ``curses`` or get it from the cache,
|
|
|
if it has been registered before.
|
|
|
"""
|
|
|
try:
|
|
|
return self._styles[style.fg, style.bg, style.attrs]
|
|
|
except KeyError:
|
|
|
attrs = 0
|
|
|
for b in astyle.A2CURSES:
|
|
|
if style.attrs & b:
|
|
|
attrs |= astyle.A2CURSES[b]
|
|
|
try:
|
|
|
color = self._colors[style.fg, style.bg]
|
|
|
except KeyError:
|
|
|
curses.init_pair(
|
|
|
self._maxcolor,
|
|
|
astyle.COLOR2CURSES[style.fg],
|
|
|
astyle.COLOR2CURSES[style.bg]
|
|
|
)
|
|
|
color = curses.color_pair(self._maxcolor)
|
|
|
self._colors[style.fg, style.bg] = color
|
|
|
self._maxcolor += 1
|
|
|
c = color | attrs
|
|
|
self._styles[style.fg, style.bg, style.attrs] = c
|
|
|
return c
|
|
|
|
|
|
def addstr(self, y, x, begx, endx, text, style):
|
|
|
"""
|
|
|
A version of ``curses.addstr()`` that can handle ``x`` coordinates
|
|
|
that are outside the screen.
|
|
|
"""
|
|
|
text2 = text[max(0, begx-x):max(0, endx-x)]
|
|
|
if text2:
|
|
|
self.scr.addstr(y, max(x, begx), text2, self.getstyle(style))
|
|
|
return len(text)
|
|
|
|
|
|
def addchr(self, y, x, begx, endx, c, l, style):
|
|
|
x0 = max(x, begx)
|
|
|
x1 = min(x+l, endx)
|
|
|
if x1>x0:
|
|
|
self.scr.addstr(y, x0, c*(x1-x0), self.getstyle(style))
|
|
|
return l
|
|
|
|
|
|
def _calcheaderlines(self, levels):
|
|
|
# Calculate how many headerlines do we have to display, if we have
|
|
|
# ``levels`` browser levels
|
|
|
if levels is None:
|
|
|
levels = len(self.levels)
|
|
|
self._headerlines = min(self.maxheaders, levels)
|
|
|
self._firstheaderline = levels-self._headerlines
|
|
|
|
|
|
def getstylehere(self, style):
|
|
|
"""
|
|
|
Return a style for displaying the original style ``style``
|
|
|
in the row the cursor is on.
|
|
|
"""
|
|
|
return astyle.Style(style.fg, style.bg, style.attrs | astyle.A_BOLD)
|
|
|
|
|
|
def report(self, msg):
|
|
|
"""
|
|
|
Store the message ``msg`` for display below the footer line. This
|
|
|
will be displayed as soon as the screen is redrawn.
|
|
|
"""
|
|
|
self._report = msg
|
|
|
|
|
|
def enter(self, item, mode, *attrs):
|
|
|
"""
|
|
|
Enter the object ``item`` in the mode ``mode``. If ``attrs`` is
|
|
|
specified, it will be used as a fixed list of attributes to display.
|
|
|
"""
|
|
|
try:
|
|
|
iterator = ipipe.xiter(item, mode)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception, exc:
|
|
|
curses.beep()
|
|
|
self.report(exc)
|
|
|
else:
|
|
|
self._calcheaderlines(len(self.levels)+1)
|
|
|
level = _BrowserLevel(
|
|
|
self,
|
|
|
item,
|
|
|
iterator,
|
|
|
self.scrsizey-1-self._headerlines-2,
|
|
|
*attrs
|
|
|
)
|
|
|
self.levels.append(level)
|
|
|
|
|
|
def startkeyboardinput(self, mode):
|
|
|
"""
|
|
|
Enter mode ``mode``, which requires keyboard input.
|
|
|
"""
|
|
|
self.mode = mode
|
|
|
self.prompts[mode].start()
|
|
|
|
|
|
def keylabel(self, keycode):
|
|
|
"""
|
|
|
Return a pretty name for the ``curses`` key ``keycode`` (used in the
|
|
|
help screen and in reports about unassigned keys).
|
|
|
"""
|
|
|
if keycode <= 0xff:
|
|
|
specialsnames = {
|
|
|
ord("\n"): "RETURN",
|
|
|
ord(" "): "SPACE",
|
|
|
ord("\t"): "TAB",
|
|
|
ord("\x7f"): "DELETE",
|
|
|
ord("\x08"): "BACKSPACE",
|
|
|
}
|
|
|
if keycode in specialsnames:
|
|
|
return specialsnames[keycode]
|
|
|
elif 0x00 < keycode < 0x20:
|
|
|
return "CTRL-%s" % chr(keycode + 64)
|
|
|
return repr(chr(keycode))
|
|
|
for name in dir(curses):
|
|
|
if name.startswith("KEY_") and getattr(curses, name) == keycode:
|
|
|
return name
|
|
|
return str(keycode)
|
|
|
|
|
|
def beep(self, force=False):
|
|
|
if force or self._dobeep:
|
|
|
curses.beep()
|
|
|
# don't beep again (as long as the same key is pressed)
|
|
|
self._dobeep = False
|
|
|
|
|
|
def cmd_quit(self):
|
|
|
self.returnvalue = None
|
|
|
return True
|
|
|
|
|
|
def cmd_up(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("up")
|
|
|
level.moveto(level.curx, level.cury-self.stepy)
|
|
|
|
|
|
def cmd_down(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("down")
|
|
|
level.moveto(level.curx, level.cury+self.stepy)
|
|
|
|
|
|
def cmd_pageup(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("page up")
|
|
|
level.moveto(level.curx, level.cury-level.mainsizey+self.pageoverlapy)
|
|
|
|
|
|
def cmd_pagedown(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("page down")
|
|
|
level.moveto(level.curx, level.cury+level.mainsizey-self.pageoverlapy)
|
|
|
|
|
|
def cmd_left(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("left")
|
|
|
level.moveto(level.curx-self.stepx, level.cury)
|
|
|
|
|
|
def cmd_right(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("right")
|
|
|
level.moveto(level.curx+self.stepx, level.cury)
|
|
|
|
|
|
def cmd_home(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("home")
|
|
|
level.moveto(0, level.cury)
|
|
|
|
|
|
def cmd_end(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("end")
|
|
|
level.moveto(level.datasizex+level.mainsizey-self.pageoverlapx, level.cury)
|
|
|
|
|
|
def cmd_prevattr(self):
|
|
|
level = self.levels[-1]
|
|
|
if level.displayattr[0] is None or level.displayattr[0] == 0:
|
|
|
self.beep()
|
|
|
else:
|
|
|
self.report("prevattr")
|
|
|
pos = 0
|
|
|
for (i, attrname) in enumerate(level.displayattrs):
|
|
|
if i == level.displayattr[0]-1:
|
|
|
break
|
|
|
pos += level.colwidths[attrname] + 1
|
|
|
level.moveto(pos, level.cury)
|
|
|
|
|
|
def cmd_nextattr(self):
|
|
|
level = self.levels[-1]
|
|
|
if level.displayattr[0] is None or level.displayattr[0] == len(level.displayattrs)-1:
|
|
|
self.beep()
|
|
|
else:
|
|
|
self.report("nextattr")
|
|
|
pos = 0
|
|
|
for (i, attrname) in enumerate(level.displayattrs):
|
|
|
if i == level.displayattr[0]+1:
|
|
|
break
|
|
|
pos += level.colwidths[attrname] + 1
|
|
|
level.moveto(pos, level.cury)
|
|
|
|
|
|
def cmd_pick(self):
|
|
|
level = self.levels[-1]
|
|
|
self.returnvalue = level.items[level.cury].item
|
|
|
return True
|
|
|
|
|
|
def cmd_pickattr(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
attr = ipipe._getattr(level.items[level.cury].item, attrname)
|
|
|
if attr is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
else:
|
|
|
self.returnvalue = attr
|
|
|
return True
|
|
|
|
|
|
def cmd_pickallattrs(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
result = []
|
|
|
for cache in level.items:
|
|
|
attr = ipipe._getattr(cache.item, attrname)
|
|
|
if attr is not ipipe.noitem:
|
|
|
result.append(attr)
|
|
|
self.returnvalue = result
|
|
|
return True
|
|
|
|
|
|
def cmd_pickmarked(self):
|
|
|
level = self.levels[-1]
|
|
|
self.returnvalue = [cache.item for cache in level.items if cache.marked]
|
|
|
return True
|
|
|
|
|
|
def cmd_pickmarkedattr(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
result = []
|
|
|
for cache in level.items:
|
|
|
if cache.marked:
|
|
|
attr = ipipe._getattr(cache.item, attrname)
|
|
|
if attr is not ipipe.noitem:
|
|
|
result.append(attr)
|
|
|
self.returnvalue = result
|
|
|
return True
|
|
|
|
|
|
def cmd_markrange(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("markrange")
|
|
|
start = None
|
|
|
if level.items:
|
|
|
for i in xrange(level.cury, -1, -1):
|
|
|
if level.items[i].marked:
|
|
|
start = i
|
|
|
break
|
|
|
if start is None:
|
|
|
self.report(CommandError("no mark before cursor"))
|
|
|
curses.beep()
|
|
|
else:
|
|
|
for i in xrange(start, level.cury+1):
|
|
|
cache = level.items[i]
|
|
|
if not cache.marked:
|
|
|
cache.marked = True
|
|
|
level.marked += 1
|
|
|
|
|
|
def cmd_enterdefault(self):
|
|
|
level = self.levels[-1]
|
|
|
try:
|
|
|
item = level.items[level.cury].item
|
|
|
except IndexError:
|
|
|
self.report(CommandError("No object"))
|
|
|
curses.beep()
|
|
|
else:
|
|
|
self.report("entering object (default mode)...")
|
|
|
self.enter(item, "default")
|
|
|
|
|
|
def cmd_leave(self):
|
|
|
self.report("leave")
|
|
|
if len(self.levels) > 1:
|
|
|
self._calcheaderlines(len(self.levels)-1)
|
|
|
self.levels.pop(-1)
|
|
|
else:
|
|
|
self.report(CommandError("This is the last level"))
|
|
|
curses.beep()
|
|
|
|
|
|
def cmd_enter(self):
|
|
|
level = self.levels[-1]
|
|
|
try:
|
|
|
item = level.items[level.cury].item
|
|
|
except IndexError:
|
|
|
self.report(CommandError("No object"))
|
|
|
curses.beep()
|
|
|
else:
|
|
|
self.report("entering object...")
|
|
|
self.enter(item, None)
|
|
|
|
|
|
def cmd_enterattr(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
try:
|
|
|
item = level.items[level.cury].item
|
|
|
except IndexError:
|
|
|
self.report(CommandError("No object"))
|
|
|
curses.beep()
|
|
|
else:
|
|
|
attr = ipipe._getattr(item, attrname)
|
|
|
if attr is ipipe.noitem:
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
else:
|
|
|
self.report("entering object attribute %s..." % ipipe._attrname(attrname))
|
|
|
self.enter(attr, None)
|
|
|
|
|
|
def cmd_detail(self):
|
|
|
level = self.levels[-1]
|
|
|
try:
|
|
|
item = level.items[level.cury].item
|
|
|
except IndexError:
|
|
|
self.report(CommandError("No object"))
|
|
|
curses.beep()
|
|
|
else:
|
|
|
self.report("entering detail view for object...")
|
|
|
self.enter(item, "detail")
|
|
|
|
|
|
def cmd_detailattr(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
try:
|
|
|
item = level.items[level.cury].item
|
|
|
except IndexError:
|
|
|
self.report(CommandError("No object"))
|
|
|
curses.beep()
|
|
|
else:
|
|
|
attr = ipipe._getattr(item, attrname)
|
|
|
if attr is ipipe.noitem:
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
else:
|
|
|
self.report("entering detail view for attribute...")
|
|
|
self.enter(attr, "detail")
|
|
|
|
|
|
def cmd_tooglemark(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("toggle mark")
|
|
|
try:
|
|
|
item = level.items[level.cury]
|
|
|
except IndexError: # no items?
|
|
|
pass
|
|
|
else:
|
|
|
if item.marked:
|
|
|
item.marked = False
|
|
|
level.marked -= 1
|
|
|
else:
|
|
|
item.marked = True
|
|
|
level.marked += 1
|
|
|
|
|
|
def cmd_sortattrasc(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
self.report("sort by %s (ascending)" % ipipe._attrname(attrname))
|
|
|
def key(item):
|
|
|
try:
|
|
|
return ipipe._getattr(item, attrname, None)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception:
|
|
|
return None
|
|
|
level.sort(key)
|
|
|
|
|
|
def cmd_sortattrdesc(self):
|
|
|
level = self.levels[-1]
|
|
|
attrname = level.displayattr[1]
|
|
|
if attrname is ipipe.noitem:
|
|
|
curses.beep()
|
|
|
self.report(AttributeError(ipipe._attrname(attrname)))
|
|
|
return
|
|
|
self.report("sort by %s (descending)" % ipipe._attrname(attrname))
|
|
|
def key(item):
|
|
|
try:
|
|
|
return ipipe._getattr(item, attrname, None)
|
|
|
except (KeyboardInterrupt, SystemExit):
|
|
|
raise
|
|
|
except Exception:
|
|
|
return None
|
|
|
level.sort(key, reverse=True)
|
|
|
|
|
|
def cmd_goto(self):
|
|
|
self.startkeyboardinput("goto")
|
|
|
|
|
|
def cmd_find(self):
|
|
|
self.startkeyboardinput("find")
|
|
|
|
|
|
def cmd_findbackwards(self):
|
|
|
self.startkeyboardinput("findbackwards")
|
|
|
|
|
|
def cmd_help(self):
|
|
|
"""
|
|
|
The help command
|
|
|
"""
|
|
|
for level in self.levels:
|
|
|
if isinstance(level.input, _BrowserHelp):
|
|
|
curses.beep()
|
|
|
self.report(CommandError("help already active"))
|
|
|
return
|
|
|
|
|
|
self.enter(_BrowserHelp(self), "default")
|
|
|
|
|
|
def sigwinchhandler(self, signal, frame):
|
|
|
self.resized = True
|
|
|
|
|
|
def cmd_hideattr(self):
|
|
|
level = self.levels[-1]
|
|
|
if level.displayattr[0] is None:
|
|
|
self.beep()
|
|
|
else:
|
|
|
self.report("hideattr")
|
|
|
level.hiddenattrs.add(level.displayattr[1])
|
|
|
level.moveto(level.curx, level.cury, refresh=True)
|
|
|
|
|
|
def cmd_unhideattrs(self):
|
|
|
level = self.levels[-1]
|
|
|
self.report("unhideattrs")
|
|
|
level.hiddenattrs.clear()
|
|
|
level.moveto(level.curx, level.cury, refresh=True)
|
|
|
|
|
|
def _dodisplay(self, scr):
|
|
|
"""
|
|
|
This method is the workhorse of the browser. It handles screen
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drawing and the keyboard.
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"""
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self.scr = scr
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curses.halfdelay(1)
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footery = 2
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keys = []
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quitkey = self.keymap.findkey("quit", None)
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if quitkey is not None:
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keys.append("%s=quit" % self.keylabel(quitkey))
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helpkey = self.keymap.findkey("help", None)
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if helpkey is not None:
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keys.append("%s=help" % self.keylabel(helpkey))
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helpmsg = " | %s" % " ".join(keys)
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scr.clear()
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msg = "Fetching first batch of objects..."
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(self.scrsizey, self.scrsizex) = scr.getmaxyx()
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scr.addstr(self.scrsizey//2, (self.scrsizex-len(msg))//2, msg)
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scr.refresh()
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lastc = -1
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self.levels = []
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# enter the first level
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self.enter(self.input, ipipe.xiter(self.input, "default"), *self.attrs)
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self._calcheaderlines(None)
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while True:
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level = self.levels[-1]
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(self.scrsizey, self.scrsizex) = scr.getmaxyx()
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level.mainsizey = self.scrsizey-1-self._headerlines-footery
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# Paint object header
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for i in xrange(self._firstheaderline, self._firstheaderline+self._headerlines):
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lv = self.levels[i]
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posx = 0
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posy = i-self._firstheaderline
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endx = self.scrsizex
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if i: # not the first level
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msg = " (%d/%d" % (self.levels[i-1].cury, len(self.levels[i-1].items))
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if not self.levels[i-1].exhausted:
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msg += "+"
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msg += ") "
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endx -= len(msg)+1
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posx += self.addstr(posy, posx, 0, endx, " ibrowse #%d: " % i, self.style_objheadertext)
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for (style, text) in lv.header:
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posx += self.addstr(posy, posx, 0, endx, text, self.style_objheaderobject)
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if posx >= endx:
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break
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if i:
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posx += self.addstr(posy, posx, 0, self.scrsizex, msg, self.style_objheadernumber)
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posx += self.addchr(posy, posx, 0, self.scrsizex, " ", self.scrsizex-posx, self.style_objheadernumber)
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if not level.items:
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self.addchr(self._headerlines, 0, 0, self.scrsizex, " ", self.scrsizex, self.style_colheader)
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self.addstr(self._headerlines+1, 0, 0, self.scrsizex, " <empty>", astyle.style_error)
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scr.clrtobot()
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else:
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# Paint column headers
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scr.move(self._headerlines, 0)
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scr.addstr(" %*s " % (level.numbersizex, "#"), self.getstyle(self.style_colheader))
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scr.addstr(self.headersepchar, self.getstyle(self.style_colheadersep))
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begx = level.numbersizex+3
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posx = begx-level.datastartx
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for attrname in level.displayattrs:
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strattrname = ipipe._attrname(attrname)
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cwidth = level.colwidths[attrname]
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header = strattrname.ljust(cwidth)
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if attrname == level.displayattr[1]:
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style = self.style_colheaderhere
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else:
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style = self.style_colheader
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posx += self.addstr(self._headerlines, posx, begx, self.scrsizex, header, style)
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posx += self.addstr(self._headerlines, posx, begx, self.scrsizex, self.headersepchar, self.style_colheadersep)
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if posx >= self.scrsizex:
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break
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else:
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scr.addstr(" "*(self.scrsizex-posx), self.getstyle(self.style_colheader))
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# Paint rows
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posy = self._headerlines+1+level.datastarty
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for i in xrange(level.datastarty, min(level.datastarty+level.mainsizey, len(level.items))):
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cache = level.items[i]
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if i == level.cury:
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style = self.style_numberhere
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else:
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style = self.style_number
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posy = self._headerlines+1+i-level.datastarty
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posx = begx-level.datastartx
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scr.move(posy, 0)
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scr.addstr(" %*d%s" % (level.numbersizex, i, " !"[cache.marked]), self.getstyle(style))
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scr.addstr(self.headersepchar, self.getstyle(self.style_sep))
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for attrname in level.displayattrs:
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cwidth = level.colwidths[attrname]
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try:
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(align, length, parts) = level.displayrows[i-level.datastarty][attrname]
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except KeyError:
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align = 2
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style = astyle.style_nodata
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padstyle = self.style_datapad
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sepstyle = self.style_sep
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if i == level.cury:
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padstyle = self.getstylehere(padstyle)
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sepstyle = self.getstylehere(sepstyle)
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if align == 2:
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posx += self.addchr(posy, posx, begx, self.scrsizex, self.nodatachar, cwidth, style)
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else:
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if align == 1:
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posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, cwidth-length, padstyle)
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elif align == 0:
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pad1 = (cwidth-length)//2
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pad2 = cwidth-length-len(pad1)
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posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, pad1, padstyle)
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for (style, text) in parts:
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if i == level.cury:
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style = self.getstylehere(style)
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posx += self.addstr(posy, posx, begx, self.scrsizex, text, style)
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if posx >= self.scrsizex:
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break
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if align == -1:
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posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, cwidth-length, padstyle)
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elif align == 0:
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posx += self.addchr(posy, posx, begx, self.scrsizex, self.datapadchar, pad2, padstyle)
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posx += self.addstr(posy, posx, begx, self.scrsizex, self.datasepchar, sepstyle)
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else:
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scr.clrtoeol()
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# Add blank row headers for the rest of the screen
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for posy in xrange(posy+1, self.scrsizey-2):
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scr.addstr(posy, 0, " " * (level.numbersizex+2), self.getstyle(self.style_colheader))
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scr.clrtoeol()
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posy = self.scrsizey-footery
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# Display footer
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scr.addstr(posy, 0, " "*self.scrsizex, self.getstyle(self.style_footer))
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if level.exhausted:
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flag = ""
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else:
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flag = "+"
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endx = self.scrsizex-len(helpmsg)-1
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scr.addstr(posy, endx, helpmsg, self.getstyle(self.style_footer))
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posx = 0
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msg = " %d%s objects (%d marked): " % (len(level.items), flag, level.marked)
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posx += self.addstr(posy, posx, 0, endx, msg, self.style_footer)
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try:
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item = level.items[level.cury].item
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except IndexError: # empty
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pass
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else:
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for (nostyle, text) in ipipe.xrepr(item, "footer"):
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if not isinstance(nostyle, int):
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posx += self.addstr(posy, posx, 0, endx, text, self.style_footer)
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if posx >= endx:
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break
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attrstyle = [(astyle.style_default, "no attribute")]
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attrname = level.displayattr[1]
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if attrname is not ipipe.noitem and attrname is not None:
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posx += self.addstr(posy, posx, 0, endx, " | ", self.style_footer)
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posx += self.addstr(posy, posx, 0, endx, ipipe._attrname(attrname), self.style_footer)
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posx += self.addstr(posy, posx, 0, endx, ": ", self.style_footer)
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try:
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attr = ipipe._getattr(item, attrname)
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except (SystemExit, KeyboardInterrupt):
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raise
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except Exception, exc:
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attr = exc
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if attr is not ipipe.noitem:
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attrstyle = ipipe.xrepr(attr, "footer")
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for (nostyle, text) in attrstyle:
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if not isinstance(nostyle, int):
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posx += self.addstr(posy, posx, 0, endx, text, self.style_footer)
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if posx >= endx:
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break
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try:
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# Display input prompt
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if self.mode in self.prompts:
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history = self.prompts[self.mode]
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posx = 0
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posy = self.scrsizey-1
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posx += self.addstr(posy, posx, 0, endx, history.prompt, astyle.style_default)
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posx += self.addstr(posy, posx, 0, endx, " [", astyle.style_default)
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if history.cury==-1:
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text = "new"
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else:
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text = str(history.cury+1)
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posx += self.addstr(posy, posx, 0, endx, text, astyle.style_type_number)
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if history.history:
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posx += self.addstr(posy, posx, 0, endx, "/", astyle.style_default)
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posx += self.addstr(posy, posx, 0, endx, str(len(history.history)), astyle.style_type_number)
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posx += self.addstr(posy, posx, 0, endx, "]: ", astyle.style_default)
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inputstartx = posx
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posx += self.addstr(posy, posx, 0, endx, history.input, astyle.style_default)
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# Display report
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else:
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if self._report is not None:
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if isinstance(self._report, Exception):
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style = self.getstyle(astyle.style_error)
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if self._report.__class__.__module__ == "exceptions":
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msg = "%s: %s" % \
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(self._report.__class__.__name__, self._report)
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else:
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msg = "%s.%s: %s" % \
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(self._report.__class__.__module__,
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self._report.__class__.__name__, self._report)
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else:
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style = self.getstyle(self.style_report)
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msg = self._report
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scr.addstr(self.scrsizey-1, 0, msg[:self.scrsizex], style)
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self._report = None
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else:
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scr.move(self.scrsizey-1, 0)
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except curses.error:
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# Protect against errors from writing to the last line
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pass
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scr.clrtoeol()
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# Position cursor
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if self.mode in self.prompts:
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history = self.prompts[self.mode]
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scr.move(self.scrsizey-1, inputstartx+history.curx)
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else:
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scr.move(
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1+self._headerlines+level.cury-level.datastarty,
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level.numbersizex+3+level.curx-level.datastartx
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)
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scr.refresh()
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# Check keyboard
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while True:
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c = scr.getch()
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if self.resized:
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size = fcntl.ioctl(0, tty.TIOCGWINSZ, "12345678")
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size = struct.unpack("4H", size)
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oldsize = scr.getmaxyx()
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scr.erase()
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curses.resize_term(size[0], size[1])
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newsize = scr.getmaxyx()
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scr.erase()
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for l in self.levels:
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l.mainsizey += newsize[0]-oldsize[0]
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l.moveto(l.curx, l.cury, refresh=True)
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scr.refresh()
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self.resized = False
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break # Redisplay
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if self.mode in self.prompts:
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if self.prompts[self.mode].handlekey(self, c):
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break # Redisplay
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else:
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# if no key is pressed slow down and beep again
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if c == -1:
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self.stepx = 1.
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self.stepy = 1.
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self._dobeep = True
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else:
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# if a different key was pressed slow down and beep too
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if c != lastc:
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lastc = c
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self.stepx = 1.
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self.stepy = 1.
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self._dobeep = True
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cmdname = self.keymap.get(c, None)
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if cmdname is None:
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self.report(
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UnassignedKeyError("Unassigned key %s" %
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self.keylabel(c)))
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else:
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cmdfunc = getattr(self, "cmd_%s" % cmdname, None)
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if cmdfunc is None:
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self.report(
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UnknownCommandError("Unknown command %r" %
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(cmdname,)))
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elif cmdfunc():
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returnvalue = self.returnvalue
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self.returnvalue = None
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return returnvalue
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self.stepx = self.nextstepx(self.stepx)
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self.stepy = self.nextstepy(self.stepy)
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curses.flushinp() # get rid of type ahead
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break # Redisplay
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self.scr = None
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def display(self):
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if hasattr(curses, "resize_term"):
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oldhandler = signal.signal(signal.SIGWINCH, self.sigwinchhandler)
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try:
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return curses.wrapper(self._dodisplay)
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finally:
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signal.signal(signal.SIGWINCH, oldhandler)
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else:
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return curses.wrapper(self._dodisplay)
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