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"""
Plugin to rename list of files all at once, using full power of
FAR text editor.
"""
__author__ = 'Yaroslav Yanovsky'
import os
import tempfile
from yfar import FarPlugin
RENAME_INFO = b'''Rename list of files. File names to the right of slashes
are destination names. File names to the left are given for reference only,
you can modify them too - only the line order is important.
Full destination paths are supported too - either absolute or relative.
'''
class Plugin(FarPlugin):
label = 'Batch Rename Files and Directories'
openFrom = ['PLUGINSMENU', 'FILEPANEL']
def OpenPlugin(self, _):
panel = self.get_panel()
dir = panel.directory
names = []
for sel in panel.selected:
full_fn = sel.file_name
if '/' in full_fn:
if dir:
self.error('Panel directory {} and full panel name '
'{} conflict'.format(dir, full_fn))
return
elif dir:
full_fn = os.path.join(dir, full_fn)
else:
self.error('Panel name {} is local and panel directory not '
'specified')
return
names.append([full_fn])
if not names:
self.notice('No files selected')
return
max_len = max(len(os.path.basename(x[0])) for x in names)
with tempfile.NamedTemporaryFile(delete=False) as f:
f.write(RENAME_INFO)
for fn, in names:
fn = os.path.basename(fn)
f.write(('{} / {}\n'.format(fn.ljust(max_len), fn)).encode())
renamed = skipped = 0
failed = []
if self.editor(f.name, 'Rename list of files',
line=RENAME_INFO.count(b'\n') + 1, column=max_len + 4):
i = 0
with open(f.name, 'rb') as f:
used_names = set()
for line in f:
if b'/' in line:
if i >= len(names):
self.error('Aborted: edited list has more '
'names than required')
break
dst_fn = line.split(b'/', 1)[1].strip().decode()
if dst_fn.startswith('~'):
dst_fn = os.path.expanduser(dst_fn)
elif not dst_fn.startswith('/'):
dst_fn = os.path.abspath(os.path.join(
os.path.dirname(names[i][0]), dst_fn))
if dst_fn in used_names:
self.error('Aborted: multiple destination names '
'point to the same file\n'
'{}'.format(dst_fn))
break
names[i].append(dst_fn)
used_names.add(dst_fn)
i += 1
else:
if i == len(names):
for src_fn, dst_fn in names:
if src_fn == dst_fn:
skipped += 1
continue
if os.path.exists(dst_fn):
failed.append(dst_fn + ': already exists')
continue
dst_dir, fn = os.path.split(dst_fn)
if not os.path.exists(dst_dir):
# create dst dir if not exist
try:
os.makedirs(dst_dir)
except Exception as e:
failed.append(fn + ' - mkdir: ' + str(e))
continue
try:
os.rename(src_fn, dst_fn)
except Exception as e:
failed.append(fn + ': ' + str(e))
else:
renamed += 1
else:
self.error('Aborted: edited list has less names than '
'required')
panel.refresh()
if renamed or skipped or failed:
msg = '{:d} file(s) renamed'.format(renamed)
if skipped:
msg += ', {:d} skipped'.format(skipped)
if failed:
self.error(msg + ', {:d} failed:\n{}'.format(
len(failed), '\n'.join(failed)))
else:
self.notice(msg)
if os.path.exists(f.name):
os.unlink(f.name)
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