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# -*- coding: utf-8 -*-
def long_substr(data):
substr = ''
if len(data) > 1 and len(data[0]) > 0:
for i in range(len(data[0])):
for j in range(len(data[0])-i+1):
if j > len(substr) and is_substr(data[0][i:i+j], data):
substr = data[0][i:i+j]
elif len(data) == 1:
substr = data[0]
return substr
def is_substr(find, data):
if len(data) < 1 and len(find) < 1:
return False
for i in range(len(data)):
if find not in data[i]:
return False
return True
default_opts = {
'arrange_array': False, # Check if file has changed since last time
'arrange_vertical': True,
'array_prefix': '',
'array_suffix': '',
'colfmt': None,
'colsep': ' ',
'displaywidth': 80,
'lineprefix': '',
'linesuffix': "\n",
'ljust': None,
'term_adjust': False
}
def get_option(key, options):
return options.get(key, default_opts.get(key))
def columnize(array, displaywidth=80, colsep=' ',
arrange_vertical=True, ljust=True, lineprefix='',
opts={}):
"""Return a list of strings as a compact set of columns arranged
horizontally or vertically.
For example, for a line width of 4 characters (arranged vertically):
['1', '2,', '3', '4'] => '1 3\n2 4\n'
or arranged horizontally:
['1', '2,', '3', '4'] => '1 2\n3 4\n'
Each column is only as wide as necessary. By default, columns are
separated by two spaces - one was not legible enough. Set "colsep"
to adjust the string separate columns. Set `displaywidth' to set
the line width.
Normally, consecutive items go down from the top to bottom from
the left-most column to the right-most. If "arrange_vertical" is
set false, consecutive items will go across, left to right, top to
bottom."""
if not isinstance(array, (list, tuple)):
raise TypeError((
'array needs to be an instance of a list or a tuple'))
if len(opts.keys()) > 0:
o = {key: get_option(key, opts) for key in default_opts}
if o['arrange_array']:
o.update({
'array_prefix': '[',
'lineprefix': ' ',
'linesuffix': ",\n",
'array_suffix': "]\n",
'colsep': ', ',
'arrange_vertical': False,
})
else:
o = default_opts.copy()
o.update({
'displaywidth': displaywidth,
'colsep': colsep,
'arrange_vertical': arrange_vertical,
'ljust': ljust,
'lineprefix': lineprefix,
})
# if o['ljust'] is None:
# o['ljust'] = !(list.all?{|datum| datum.kind_of?(Numeric)})
if o['colfmt']:
array = [(o['colfmt'] % i) for i in array]
else:
array = [str(i) for i in array]
# Some degenerate cases
size = len(array)
if 0 == size:
return "<empty>\n"
elif size == 1:
return '%s%s%s\n' % (o['array_prefix'], str(array[0]),
o['array_suffix'])
if o['displaywidth'] - len(o['lineprefix']) < 4:
o['displaywidth'] = len(o['lineprefix']) + 4
else:
o['displaywidth'] -= len(o['lineprefix'])
o['displaywidth'] = max(4, o['displaywidth'] - len(o['lineprefix']))
if o['arrange_vertical']:
def array_index(nrows, row, col):
return nrows*col + row
# Try every row count from 1 upwards
for nrows in range(1, size):
ncols = (size+nrows-1) // nrows
colwidths = []
totwidth = -len(o['colsep'])
for col in range(ncols):
# get max column width for this column
colwidth = 0
for row in range(nrows):
i = array_index(nrows, row, col)
if i >= size:
break
x = array[i]
colwidth = max(colwidth, len(x))
colwidths.append(colwidth)
totwidth += colwidth + len(o['colsep'])
if totwidth > o['displaywidth']:
break
if totwidth <= o['displaywidth']:
break
# The smallest number of rows computed and the
# max widths for each column has been obtained.
# Now we just have to format each of the
# rows.
s = ''
for row in range(nrows):
texts = []
for col in range(ncols):
i = row + nrows*col
if i >= size:
x = ""
else:
x = array[i]
texts.append(x)
while texts and not texts[-1]:
del texts[-1]
for col in range(len(texts)):
if o['ljust']:
texts[col] = texts[col].ljust(colwidths[col])
else:
texts[col] = texts[col].rjust(colwidths[col])
s += "%s%s%s" % (o['lineprefix'], str(o['colsep'].join(texts)),
o['linesuffix'])
return s
else:
def array_index(ncols, row, col):
return ncols*(row-1) + col
# Try every column count from size downwards
colwidths = []
for ncols in range(size, 0, -1):
# Try every row count from 1 upwards
min_rows = (size+ncols-1) // ncols
nrows = min_rows - 1
while nrows < size:
nrows += 1
rounded_size = nrows * ncols
colwidths = []
totwidth = -len(o['colsep'])
for col in range(ncols):
# get max column width for this column
colwidth = 0
for row in range(1, nrows+1):
i = array_index(ncols, row, col)
if i >= rounded_size:
break
elif i < size:
x = array[i]
colwidth = max(colwidth, len(x))
colwidths.append(colwidth)
totwidth += colwidth + len(o['colsep'])
if totwidth >= o['displaywidth']:
break
if totwidth <= o['displaywidth'] and i >= rounded_size-1:
# Found the right nrows and ncols
# print "right nrows and ncols"
nrows = row
break
elif totwidth >= o['displaywidth']:
# print "reduce ncols", ncols
# Need to reduce ncols
break
if totwidth <= o['displaywidth'] and i >= rounded_size-1:
break
# The smallest number of rows computed and the
# max widths for each column has been obtained.
# Now we just have to format each of the
# rows.
s = ''
if len(o['array_prefix']) != 0:
prefix = o['array_prefix']
else:
prefix = o['lineprefix']
for row in range(1, nrows+1):
texts = []
for col in range(ncols):
i = array_index(ncols, row, col)
if i >= size:
break
else:
x = array[i]
texts.append(x)
for col in range(len(texts)):
if o['ljust']:
texts[col] = texts[col].ljust(colwidths[col])
else:
texts[col] = texts[col].rjust(colwidths[col])
s += "%s%s%s" % (prefix, str(o['colsep'].join(texts)),
o['linesuffix'])
prefix = o['lineprefix']
if o['arrange_array']:
colsep = o['colsep'].rstrip()
colsep_pos = -(len(colsep)+1)
if s[colsep_pos:] == colsep + "\n":
s = s[:colsep_pos] + o['array_suffix'] + "\n"
else:
s += o['array_suffix']
return s
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