deluge/deluge/ui/console/utils/format_utils.py
2017-02-23 00:30:56 +00:00

292 lines
8.3 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (C) 2011 Nick Lanham <nick@afternight.org>
#
# This file is part of Deluge and is licensed under GNU General Public License 3.0, or later, with
# the additional special exception to link portions of this program with the OpenSSL library.
# See LICENSE for more details.
#
from __future__ import unicode_literals
import re
from collections import deque
from unicodedata import normalize as ud_normalize
from unicodedata import east_asian_width
import deluge.common
from deluge.ui.common import FILE_PRIORITY
def format_speed(speed):
if speed > 0:
return deluge.common.fspeed(speed)
else:
return '-'
def format_time(time):
if time > 0:
return deluge.common.ftime(time)
else:
return '-'
def format_date(time):
if time > 0:
return deluge.common.fdate(time)
else:
return ''
def format_date_never(time):
if time > 0:
return deluge.common.fdate(time)
else:
return 'Never'
def format_float(x):
if x < 0:
return '-'
else:
return '%.3f' % x
def format_seeds_peers(num, total):
return '%d (%d)' % (num, total)
def format_progress(perc):
if perc < 100:
return '%.2f%%' % perc
else:
return '100%'
def format_pieces(num, size):
return '%d (%s)' % (num, deluge.common.fsize(size))
def format_priority(prio):
if prio == -2:
return '[Mixed]'
elif prio < 0:
return '-'
return FILE_PRIORITY[prio]
def trim_string(string, w, have_dbls):
if w <= 0:
return ''
elif w == 1:
return ' '
elif have_dbls:
# have to do this the slow way
chrs = []
width = 4
idx = 0
while width < w:
chrs.append(string[idx])
if east_asian_width(string[idx]) in ['W', 'F']:
width += 2
else:
width += 1
idx += 1
if width != w:
chrs.pop()
chrs.append('.')
return '%s ' % (''.join(chrs))
else:
return '%s ' % (string[0:w - 1])
def format_column(col, lim):
dbls = 0
# Chosen over isinstance(col, unicode) and col.__class__ == unicode
# for speed - it's ~3 times faster for non-unicode strings and ~1.5
# for unicode strings.
if col.__class__ is unicode:
# might have some double width chars
col = ud_normalize('NFC', col)
dbls = sum(east_asian_width(c) in 'WF' for c in col)
size = len(col) + dbls
if size >= lim - 1:
return trim_string(col, lim, dbls > 0)
else:
return '%s%s' % (col, ' ' * (lim - size))
def format_row(row, column_widths):
return ''.join([format_column(row[i], column_widths[i]) for i in range(0, len(row))])
_strip_re = re.compile(r'\{!.*?!\}')
_format_code = re.compile(r'\{\|(.*)\|\}')
def remove_formatting(string):
return re.sub(_strip_re, '', string)
def wrap_string(string, width, min_lines=0, strip_colors=True):
"""
Wrap a string to fit in a particular width. Returns a list of output lines.
:param string: str, the string to wrap
:param width: int, the maximum width of a line of text
:param min_lines: int, extra lines will be added so the output tuple contains at least min_lines lines
:param strip_colors: boolean, if True, text in {!!} blocks will not be considered as adding to the
width of the line. They will still be present in the output.
"""
ret = []
s1 = string.split('\n')
indent = ''
def insert_clr(s, offset, mtchs, clrs):
end_pos = offset + len(s)
while mtchs and (mtchs[0] <= end_pos) and (mtchs[0] >= offset):
mtc = mtchs.popleft() - offset
clr = clrs.popleft()
end_pos += len(clr)
s = '%s%s%s' % (s[:mtc], clr, s[mtc:])
return s
for s in s1:
offset = 0
indent = ''
m = _format_code.search(remove_formatting(s))
if m:
if m.group(1).startswith('indent:'):
indent = m.group(1)[len('indent:'):]
elif m.group(1).startswith('indent_pos:'):
begin = m.start(0)
indent = ' ' * begin
s = _format_code.sub('', s)
if strip_colors:
mtchs = deque()
clrs = deque()
for m in _strip_re.finditer(s):
mtchs.append(m.start())
clrs.append(m.group())
cstr = _strip_re.sub('', s)
else:
cstr = s
def append_indent(l, string, offset):
"""Prepends indent to string if specified"""
if indent and offset != 0:
string = indent + string
l.append(string)
while cstr:
# max with for a line. If indent is specified, we account for this
max_width = width - (len(indent) if offset != 0 else 0)
if len(cstr) < max_width:
break
sidx = cstr.rfind(' ', 0, max_width - 1)
sidx += 1
if sidx > 0:
if strip_colors:
to_app = cstr[0:sidx]
to_app = insert_clr(to_app, offset, mtchs, clrs)
append_indent(ret, to_app, offset)
offset += len(to_app)
else:
append_indent(ret, cstr[0:sidx], offset)
cstr = cstr[sidx:]
if not cstr:
cstr = None
break
else:
# can't find a reasonable split, just split at width
if strip_colors:
to_app = cstr[0:width]
to_app = insert_clr(to_app, offset, mtchs, clrs)
append_indent(ret, to_app, offset)
offset += len(to_app)
else:
append_indent(ret, cstr[0:width], offset)
cstr = cstr[width:]
if not cstr:
cstr = None
break
if cstr is not None:
to_append = cstr
if strip_colors:
to_append = insert_clr(cstr, offset, mtchs, clrs)
append_indent(ret, to_append, offset)
if min_lines > 0:
for i in range(len(ret), min_lines):
ret.append(' ')
# Carry colors over to the next line
last_color_string = ''
for i, line in enumerate(ret):
if i != 0:
ret[i] = '%s%s' % (last_color_string, ret[i])
colors = re.findall('\\{![^!]+!\\}', line)
if colors:
last_color_string = colors[-1]
return ret
def strwidth(string):
"""
Measure width of a string considering asian double width characters
"""
if not isinstance(string, unicode):
string = unicode(string, 'utf-8')
return sum([1 + (east_asian_width(char) in ['W', 'F']) for char in string])
def pad_string(string, length, character=' ', side='right'):
"""
Pad string with specified character to desired length, considering double width characters.
"""
w = strwidth(string)
diff = length - w
if side == 'left':
return '%s%s' % (character * diff, string)
elif side == 'right':
return '%s%s' % (string, character * diff)
def delete_alt_backspace(input_text, input_cursor, sep_chars=' *?!._~-#$^;\'"/'):
"""
Remove text from input_text on ALT+backspace
Stop removing when countering any of the sep chars
"""
deleted = 0
seg_start = input_text[:input_cursor]
seg_end = input_text[input_cursor:]
none_space_deleted = False # Track if any none-space characters have been deleted
while seg_start and input_cursor > 0:
if (not seg_start) or (input_cursor == 0):
break
if deleted and seg_start[-1] in sep_chars:
if seg_start[-1] == ' ':
if seg_start[-2] == ' ' or none_space_deleted is False:
# Continue as long as:
# * next char is also a space
# * no none-space characters have been deleted
pass
else:
break
else:
break
if not none_space_deleted:
none_space_deleted = seg_start[-1] != ' '
seg_start = seg_start[:-1]
deleted += 1
input_cursor -= 1
input_text = seg_start + seg_end
return input_text, input_cursor