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Viewing changes to hunk_selector.py

  • Committer: Aaron Bentley
  • Date: 2006-08-02 03:23:09 UTC
  • mto: This revision was merged to the branch mainline in revision 425.
  • Revision ID: aaron.bentley@utoronto.ca-20060802032309-6ad0139e61304b19
Etienne Goyer: remove unused shebangs, update packaging

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hunk_selector.py
 
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import sys
 
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from userinteractor import UserInteractor, UserOption
 
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import copy
 
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class HunkSelector:
 
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    strings = {}
 
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    def __init__(self, patches):
 
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        try:
 
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            from colordiff import DiffWriter
 
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            from terminal import has_ansi_colors
 
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            if has_ansi_colors():
 
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                self.diff_stream = DiffWriter(sys.stdout)
 
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            else:
 
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                self.diff_stream = sys.stdout
 
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        except ImportError:
 
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            self.diff_stream = sys.stdout
 
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        self.standard_options = [
 
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            UserOption('y', self._selected, self.strings['select_desc'],
 
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                default=True),
 
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            UserOption('n', self._unselected, self.strings['unselect_desc']),
 
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            UserOption('d', UserInteractor.FINISH, 'done, skip to the end.'),
 
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            UserOption('i', self._invert,
 
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                'invert the current selection status of all hunks.'),
 
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            UserOption('s', self._status,
 
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                'show selection status of all hunks.'),
 
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            UserOption('q', UserInteractor.QUIT, 'quit')
 
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        ]
 
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        self.end_options = [
 
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            UserOption('y', UserInteractor.FINISH, self.strings['finish_desc'],
 
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                default=True),
 
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            UserOption('r', UserInteractor.RESTART,
 
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                'restart the hunk selection loop.'),
 
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            UserOption('s', self._status,
 
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                'show selection status of all hunks.'),
 
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            UserOption('i', self._invert,
 
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                'invert the current selection status of all hunks.'),
 
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            UserOption('q', UserInteractor.QUIT, 'quit')
 
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        ]
 
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        self.patches = patches
 
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        self.total_hunks = 0
 
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        self.interactor = UserInteractor()
 
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        self.interactor.set_item_callback(self._hunk_callback)
 
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        self.interactor.set_start_callback(self._start_callback)
 
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        self.interactor.set_end_callback(self._end_callback)
 
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        for patch in patches:
 
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            for hunk in patch.hunks:
 
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                # everything's selected by default
 
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                hunk.selected = True
 
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                self.total_hunks += 1
 
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                # we need a back pointer in the callbacks
 
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                hunk.patch = patch
 
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                self.interactor.add_item(hunk)
 
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    # Called at the start of the main loop
 
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    def _start_callback(self):
 
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        self.last_printed = -1
 
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        self.interactor.set_prompt(self.strings['prompt'])
 
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        self.interactor.set_options(self.standard_options)
 
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    # Called at the end of the item loop, return False to indicate that the
 
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    # interaction isn't finished and the confirmation prompt should be displayed
 
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    def _end_callback(self):
 
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        self._status()
 
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        self.interactor.set_prompt(self.strings['end_prompt'])
 
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        self.interactor.set_options(self.end_options)
 
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        return False
 
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    # Called once for each hunk
 
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    def _hunk_callback(self, hunk, count):
 
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        if self.last_printed != count:
 
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            self.diff_stream.write(str(hunk.patch.get_header()))
 
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            self.diff_stream.write(str(hunk))
 
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            self.last_printed = count
 
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        if hunk.selected:
 
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            self.interactor.get_option('y').default = True
 
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            self.interactor.get_option('n').default = False
 
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        else:
 
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            self.interactor.get_option('y').default = False
 
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            self.interactor.get_option('n').default = True
 
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    # The user chooses to (un)shelve a hunk
 
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    def _selected(self, hunk):
 
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        hunk.selected = True
 
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        return True
 
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    # The user chooses to keep a hunk
 
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    def _unselected(self, hunk):
 
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        hunk.selected = False
 
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        return True
 
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    # The user chooses to invert the selection
 
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    def _invert(self, hunk):
 
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        for patch in self.patches:
 
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            for hunk in patch.hunks:
 
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                if hunk.__dict__.has_key('selected'):
 
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                    hunk.selected = not hunk.selected
 
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                else:
 
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                    hunk.selected = True
 
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        self._status()
 
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        return False
 
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    # The user wants to see the status
 
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    def _status(self, hunk=None):
 
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        print '\nStatus:'
 
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        for patch in self.patches:
 
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            print '  %s' % patch.oldname
 
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            selected = 0
 
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            unselected = 0
 
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            for hunk in patch.hunks:
 
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                if hunk.selected:
 
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                    selected += 1
 
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                else:
 
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                    unselected += 1
 
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            print '  ', self.strings['status_selected'] % selected
 
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            print '  ', self.strings['status_unselected'] % unselected
 
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            print
 
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        # Tell the interactor we're not done with this item
 
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        return False
 
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    def select(self):
 
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        if self.total_hunks == 0 or not self.interactor.interact():
 
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            # False from interact means they chose to quit
 
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            return ([], [])
 
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        # Go through each patch and collect all selected/unselected hunks
 
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        for patch in self.patches:
 
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            patch.selected = []
 
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            patch.unselected = []
 
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            for hunk in patch.hunks:
 
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                if hunk.selected:
 
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                    patch.selected.append(hunk)
 
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                else:
 
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                    patch.unselected.append(hunk)
 
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        # Now build two lists, one of selected patches the other unselected
 
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        selected_patches = []
 
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        unselected_patches = []
 
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        for patch in self.patches:
 
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            if len(patch.selected):
 
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                tmp = copy.copy(patch)
 
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                tmp.hunks = tmp.selected
 
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                del tmp.selected
 
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                del tmp.unselected
 
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                selected_patches.append(tmp)
 
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            if len(patch.unselected):
 
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                tmp = copy.copy(patch)
 
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                tmp.hunks = tmp.unselected
 
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                del tmp.selected
 
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                del tmp.unselected
 
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                unselected_patches.append(tmp)
 
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        return (selected_patches, unselected_patches)
 
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class ShelveHunkSelector(HunkSelector):
 
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    def __init__(self, patches):
 
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        self.strings = {}
 
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        self.strings['status_selected'] = '%d hunks to be shelved'
 
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        self.strings['status_unselected'] = '%d hunks to be kept'
 
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        self.strings['select_desc'] = 'shelve this change.'
 
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        self.strings['unselect_desc'] = 'keep this change in your tree.'
 
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        self.strings['finish_desc'] = 'shelve selected changes.'
 
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        self.strings['prompt'] = 'Shelve this change? (%(count)d of %(total)d)'
 
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        self.strings['end_prompt'] = 'Shelve these changes?'
 
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        HunkSelector.__init__(self, patches)
 
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class UnshelveHunkSelector(HunkSelector):
 
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    def __init__(self, patches):
 
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        self.strings = {}
 
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        self.strings['status_selected'] = '%d hunks to be unshelved'
 
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        self.strings['status_unselected'] = '%d hunks left on shelf'
 
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        self.strings['select_desc'] = 'unshelve this change.'
 
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        self.strings['unselect_desc'] = 'leave this change on the shelf.'
 
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        self.strings['finish_desc'] = 'unshelve selected changes.'
 
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        self.strings['prompt'] = 'Unshelve this change? ' \
 
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            '(%(count)d of %(total)d)'
 
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        self.strings['end_prompt'] = 'Unshelve these changes?'
 
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        HunkSelector.__init__(self, patches)