102 lines
2.9 KiB
Python
102 lines
2.9 KiB
Python
#!/usr/bin/env python
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# vim:fileencoding=utf-8
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# License: GPL v3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
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import os
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import sys
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import traceback
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from functools import partial
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from gettext import gettext as _
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from kitty.cli import parse_args
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from kitty.key_encoding import ESCAPE
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from ..tui.handler import Handler
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from ..tui.loop import Loop
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from ..tui.operations import clear_screen, set_line_wrapping, set_window_title
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from .collect import create_collection
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INITIALIZING, READY, RENDERED = range(3)
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class DiffHandler(Handler):
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def __init__(self, left, right):
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self.state = INITIALIZING
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self.left, self.right = left, right
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self.report_traceback_on_exit = None
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def create_collection(self):
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self.start_job('diff', create_collection, self.left, self.right)
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def init_terminal_state(self):
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self.write(set_line_wrapping(False))
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self.write(set_window_title('kitty +diff'))
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def initialize(self, *args):
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Handler.initialize(self, *args)
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self.init_terminal_state()
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self.draw_screen()
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self.create_collection()
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def draw_screen(self):
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if self.state is INITIALIZING:
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self.write(clear_screen())
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self.write(_('Calculating diff, please wait...'))
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return
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if self.state is READY:
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self.write(clear_screen())
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self.state = RENDERED
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return
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def on_key(self, key_event):
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if self.state is INITIALIZING:
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if key_event.key is ESCAPE:
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self.quit_loop(0)
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return
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def on_job_done(self, job_id, job_result):
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if 'tb' in job_result:
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self.report_traceback_on_exit = traceback.format_exc()
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self.quit_loop(1)
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if job_id == 'diff':
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self.collection = job_result['result']
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self.state = READY
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self.write(clear_screen())
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def on_interrupt(self):
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self.quit_loop(1)
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def on_eot(self):
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self.quit_loop(1)
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OPTIONS = partial('''\
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'''.format, )
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def main(args):
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msg = 'Show a side-by-side diff of the specified files/directories'
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args, items = parse_args(args[1:], OPTIONS, 'file_or_directory file_or_directory', msg, 'kitty +kitten diff')
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if len(items) != 2:
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raise SystemExit('You must specify exactly two files/directories to compare')
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left, right = items
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if os.path.isdir(left) != os.path.isdir(right):
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raise SystemExit('The items to be diffed should both be either directories or files. Comparing a directory to a file is not valid.')
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loop = Loop()
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handler = DiffHandler(left, right)
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loop.loop(handler)
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if loop.return_code != 0:
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if handler.report_traceback_on_exit:
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print(handler.report_traceback_on_exit, file=sys.stderr)
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raise SystemExit(loop.return_code)
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def handle_result(args, current_char, target_window_id, boss):
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pass
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if __name__ == '__main__':
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main(sys.argv)
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