Mini Shell
#!/usr/bin/env python
#
# Copyright (c) 2009-2013, Luke Maurits <luke@maurits.id.au>
# All rights reserved.
# With contributions from:
# * Chris Clark
# * Klein Stephane
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
__version__ = "0.7.2"
import copy
import csv
import random
import re
import sys
import textwrap
import itertools
import unicodedata
py3k = sys.version_info[0] >= 3
if py3k:
unicode = str
basestring = str
itermap = map
iterzip = zip
uni_chr = chr
from html.parser import HTMLParser
else:
itermap = itertools.imap
iterzip = itertools.izip
uni_chr = unichr
from HTMLParser import HTMLParser
if py3k and sys.version_info[1] >= 2:
from html import escape
else:
from cgi import escape
# hrule styles
FRAME = 0
ALL = 1
NONE = 2
HEADER = 3
# Table styles
DEFAULT = 10
MSWORD_FRIENDLY = 11
PLAIN_COLUMNS = 12
RANDOM = 20
_re = re.compile("\033\[[0-9;]*m")
def _get_size(text):
lines = text.split("\n")
height = len(lines)
width = max([_str_block_width(line) for line in lines])
return (width, height)
class PrettyTable(object):
def __init__(self, field_names=None, **kwargs):
"""Return a new PrettyTable instance
Arguments:
encoding - Unicode encoding scheme used to decode any encoded input
field_names - list or tuple of field names
fields - list or tuple of field names to include in displays
start - index of first data row to include in output
end - index of last data row to include in output PLUS ONE (list slice style)
header - print a header showing field names (True or False)
header_style - stylisation to apply to field names in header ("cap", "title", "upper", "lower" or None)
border - print a border around the table (True or False)
hrules - controls printing of horizontal rules after rows. Allowed values: FRAME, HEADER, ALL, NONE
vrules - controls printing of vertical rules between columns. Allowed values: FRAME, ALL, NONE
int_format - controls formatting of integer data
float_format - controls formatting of floating point data
padding_width - number of spaces on either side of column data (only used if left and right paddings are None)
left_padding_width - number of spaces on left hand side of column data
right_padding_width - number of spaces on right hand side of column data
vertical_char - single character string used to draw vertical lines
horizontal_char - single character string used to draw horizontal lines
junction_char - single character string used to draw line junctions
sortby - name of field to sort rows by
sort_key - sorting key function, applied to data points before sorting
valign - default valign for each row (None, "t", "m" or "b")
reversesort - True or False to sort in descending or ascending order"""
self.encoding = kwargs.get("encoding", "UTF-8")
# Data
self._field_names = []
self._align = {}
self._valign = {}
self._max_width = {}
self._rows = []
if field_names:
self.field_names = field_names
else:
self._widths = []
# Options
self._options = "start end fields header border sortby reversesort sort_key attributes format hrules vrules".split()
self._options.extend("int_format float_format padding_width left_padding_width right_padding_width".split())
self._options.extend("vertical_char horizontal_char junction_char header_style valign xhtml print_empty".split())
for option in self._options:
if option in kwargs:
self._validate_option(option, kwargs[option])
else:
kwargs[option] = None
self._start = kwargs["start"] or 0
self._end = kwargs["end"] or None
self._fields = kwargs["fields"] or None
if kwargs["header"] in (True, False):
self._header = kwargs["header"]
else:
self._header = True
self._header_style = kwargs["header_style"] or None
if kwargs["border"] in (True, False):
self._border = kwargs["border"]
else:
self._border = True
self._hrules = kwargs["hrules"] or FRAME
self._vrules = kwargs["vrules"] or ALL
self._sortby = kwargs["sortby"] or None
if kwargs["reversesort"] in (True, False):
self._reversesort = kwargs["reversesort"]
else:
self._reversesort = False
self._sort_key = kwargs["sort_key"] or (lambda x: x)
self._int_format = kwargs["int_format"] or {}
self._float_format = kwargs["float_format"] or {}
self._padding_width = kwargs["padding_width"] or 1
self._left_padding_width = kwargs["left_padding_width"] or None
self._right_padding_width = kwargs["right_padding_width"] or None
self._vertical_char = kwargs["vertical_char"] or self._unicode("|")
self._horizontal_char = kwargs["horizontal_char"] or self._unicode("-")
self._junction_char = kwargs["junction_char"] or self._unicode("+")
if kwargs["print_empty"] in (True, False):
self._print_empty = kwargs["print_empty"]
else:
self._print_empty = True
self._format = kwargs["format"] or False
self._xhtml = kwargs["xhtml"] or False
self._attributes = kwargs["attributes"] or {}
def _unicode(self, value):
if not isinstance(value, basestring):
value = str(value)
if not isinstance(value, unicode):
value = unicode(value, self.encoding, "strict")
return value
def _justify(self, text, width, align):
excess = width - _str_block_width(text)
if align == "l":
return text + excess * " "
elif align == "r":
return excess * " " + text
else:
if excess % 2:
# Uneven padding
# Put more space on right if text is of odd length...
if _str_block_width(text) % 2:
return (excess//2)*" " + text + (excess//2 + 1)*" "
# and more space on left if text is of even length
else:
return (excess//2 + 1)*" " + text + (excess//2)*" "
# Why distribute extra space this way? To match the behaviour of
# the inbuilt str.center() method.
else:
# Equal padding on either side
return (excess//2)*" " + text + (excess//2)*" "
def __getattr__(self, name):
if name == "rowcount":
return len(self._rows)
elif name == "colcount":
if self._field_names:
return len(self._field_names)
elif self._rows:
return len(self._rows[0])
else:
return 0
else:
raise AttributeError(name)
def __getitem__(self, index):
new = PrettyTable()
new.field_names = self.field_names
for attr in self._options:
setattr(new, "_"+attr, getattr(self, "_"+attr))
setattr(new, "_align", getattr(self, "_align"))
if isinstance(index, slice):
for row in self._rows[index]:
new.add_row(row)
elif isinstance(index, int):
new.add_row(self._rows[index])
else:
raise Exception("Index %s is invalid, must be an integer or slice" % str(index))
return new
if py3k:
def __str__(self):
return self.__unicode__()
else:
def __str__(self):
return self.__unicode__().encode(self.encoding)
def __unicode__(self):
return self.get_string()
##############################
# ATTRIBUTE VALIDATORS #
##############################
# The method _validate_option is all that should be used elsewhere in the code base to validate options.
# It will call the appropriate validation method for that option. The individual validation methods should
# never need to be called directly (although nothing bad will happen if they *are*).
# Validation happens in TWO places.
# Firstly, in the property setters defined in the ATTRIBUTE MANAGMENT section.
# Secondly, in the _get_options method, where keyword arguments are mixed with persistent settings
def _validate_option(self, option, val):
if option in ("field_names"):
self._validate_field_names(val)
elif option in ("start", "end", "max_width", "padding_width", "left_padding_width", "right_padding_width", "format"):
self._validate_nonnegative_int(option, val)
elif option in ("sortby"):
self._validate_field_name(option, val)
elif option in ("sort_key"):
self._validate_function(option, val)
elif option in ("hrules"):
self._validate_hrules(option, val)
elif option in ("vrules"):
self._validate_vrules(option, val)
elif option in ("fields"):
self._validate_all_field_names(option, val)
elif option in ("header", "border", "reversesort", "xhtml", "print_empty"):
self._validate_true_or_false(option, val)
elif option in ("header_style"):
self._validate_header_style(val)
elif option in ("int_format"):
self._validate_int_format(option, val)
elif option in ("float_format"):
self._validate_float_format(option, val)
elif option in ("vertical_char", "horizontal_char", "junction_char"):
self._validate_single_char(option, val)
elif option in ("attributes"):
self._validate_attributes(option, val)
else:
raise Exception("Unrecognised option: %s!" % option)
def _validate_field_names(self, val):
# Check for appropriate length
if self._field_names:
try:
assert len(val) == len(self._field_names)
except AssertionError:
raise Exception("Field name list has incorrect number of values, (actual) %d!=%d (expected)" % (len(val), len(self._field_names)))
if self._rows:
try:
assert len(val) == len(self._rows[0])
except AssertionError:
raise Exception("Field name list has incorrect number of values, (actual) %d!=%d (expected)" % (len(val), len(self._rows[0])))
# Check for uniqueness
try:
assert len(val) == len(set(val))
except AssertionError:
raise Exception("Field names must be unique!")
def _validate_header_style(self, val):
try:
assert val in ("cap", "title", "upper", "lower", None)
except AssertionError:
raise Exception("Invalid header style, use cap, title, upper, lower or None!")
def _validate_align(self, val):
try:
assert val in ["l","c","r"]
except AssertionError:
raise Exception("Alignment %s is invalid, use l, c or r!" % val)
def _validate_valign(self, val):
try:
assert val in ["t","m","b",None]
except AssertionError:
raise Exception("Alignment %s is invalid, use t, m, b or None!" % val)
def _validate_nonnegative_int(self, name, val):
try:
assert int(val) >= 0
except AssertionError:
raise Exception("Invalid value for %s: %s!" % (name, self._unicode(val)))
def _validate_true_or_false(self, name, val):
try:
assert val in (True, False)
except AssertionError:
raise Exception("Invalid value for %s! Must be True or False." % name)
def _validate_int_format(self, name, val):
if val == "":
return
try:
assert type(val) in (str, unicode)
assert val.isdigit()
except AssertionError:
raise Exception("Invalid value for %s! Must be an integer format string." % name)
def _validate_float_format(self, name, val):
if val == "":
return
try:
assert type(val) in (str, unicode)
assert "." in val
bits = val.split(".")
assert len(bits) <= 2
assert bits[0] == "" or bits[0].isdigit()
assert bits[1] == "" or bits[1].isdigit()
except AssertionError:
raise Exception("Invalid value for %s! Must be a float format string." % name)
def _validate_function(self, name, val):
try:
assert hasattr(val, "__call__")
except AssertionError:
raise Exception("Invalid value for %s! Must be a function." % name)
def _validate_hrules(self, name, val):
try:
assert val in (ALL, FRAME, HEADER, NONE)
except AssertionError:
raise Exception("Invalid value for %s! Must be ALL, FRAME, HEADER or NONE." % name)
def _validate_vrules(self, name, val):
try:
assert val in (ALL, FRAME, NONE)
except AssertionError:
raise Exception("Invalid value for %s! Must be ALL, FRAME, or NONE." % name)
def _validate_field_name(self, name, val):
try:
assert (val in self._field_names) or (val is None)
except AssertionError:
raise Exception("Invalid field name: %s!" % val)
def _validate_all_field_names(self, name, val):
try:
for x in val:
self._validate_field_name(name, x)
except AssertionError:
raise Exception("fields must be a sequence of field names!")
def _validate_single_char(self, name, val):
try:
assert _str_block_width(val) == 1
except AssertionError:
raise Exception("Invalid value for %s! Must be a string of length 1." % name)
def _validate_attributes(self, name, val):
try:
assert isinstance(val, dict)
except AssertionError:
raise Exception("attributes must be a dictionary of name/value pairs!")
##############################
# ATTRIBUTE MANAGEMENT #
##############################
def _get_field_names(self):
return self._field_names
"""The names of the fields
Arguments:
fields - list or tuple of field names"""
def _set_field_names(self, val):
val = [self._unicode(x) for x in val]
self._validate_option("field_names", val)
if self._field_names:
old_names = self._field_names[:]
self._field_names = val
if self._align and old_names:
for old_name, new_name in zip(old_names, val):
self._align[new_name] = self._align[old_name]
for old_name in old_names:
if old_name not in self._align:
self._align.pop(old_name)
else:
for field in self._field_names:
self._align[field] = "c"
if self._valign and old_names:
for old_name, new_name in zip(old_names, val):
self._valign[new_name] = self._valign[old_name]
for old_name in old_names:
if old_name not in self._valign:
self._valign.pop(old_name)
else:
for field in self._field_names:
self._valign[field] = "t"
field_names = property(_get_field_names, _set_field_names)
def _get_align(self):
return self._align
def _set_align(self, val):
self._validate_align(val)
for field in self._field_names:
self._align[field] = val
align = property(_get_align, _set_align)
def _get_valign(self):
return self._valign
def _set_valign(self, val):
self._validate_valign(val)
for field in self._field_names:
self._valign[field] = val
valign = property(_get_valign, _set_valign)
def _get_max_width(self):
return self._max_width
def _set_max_width(self, val):
self._validate_option("max_width", val)
for field in self._field_names:
self._max_width[field] = val
max_width = property(_get_max_width, _set_max_width)
def _get_fields(self):
"""List or tuple of field names to include in displays
Arguments:
fields - list or tuple of field names to include in displays"""
return self._fields
def _set_fields(self, val):
self._validate_option("fields", val)
self._fields = val
fields = property(_get_fields, _set_fields)
def _get_start(self):
"""Start index of the range of rows to print
Arguments:
start - index of first data row to include in output"""
return self._start
def _set_start(self, val):
self._validate_option("start", val)
self._start = val
start = property(_get_start, _set_start)
def _get_end(self):
"""End index of the range of rows to print
Arguments:
end - index of last data row to include in output PLUS ONE (list slice style)"""
return self._end
def _set_end(self, val):
self._validate_option("end", val)
self._end = val
end = property(_get_end, _set_end)
def _get_sortby(self):
"""Name of field by which to sort rows
Arguments:
sortby - field name to sort by"""
return self._sortby
def _set_sortby(self, val):
self._validate_option("sortby", val)
self._sortby = val
sortby = property(_get_sortby, _set_sortby)
def _get_reversesort(self):
"""Controls direction of sorting (ascending vs descending)
Arguments:
reveresort - set to True to sort by descending order, or False to sort by ascending order"""
return self._reversesort
def _set_reversesort(self, val):
self._validate_option("reversesort", val)
self._reversesort = val
reversesort = property(_get_reversesort, _set_reversesort)
def _get_sort_key(self):
"""Sorting key function, applied to data points before sorting
Arguments:
sort_key - a function which takes one argument and returns something to be sorted"""
return self._sort_key
def _set_sort_key(self, val):
self._validate_option("sort_key", val)
self._sort_key = val
sort_key = property(_get_sort_key, _set_sort_key)
def _get_header(self):
"""Controls printing of table header with field names
Arguments:
header - print a header showing field names (True or False)"""
return self._header
def _set_header(self, val):
self._validate_option("header", val)
self._header = val
header = property(_get_header, _set_header)
def _get_header_style(self):
"""Controls stylisation applied to field names in header
Arguments:
header_style - stylisation to apply to field names in header ("cap", "title", "upper", "lower" or None)"""
return self._header_style
def _set_header_style(self, val):
self._validate_header_style(val)
self._header_style = val
header_style = property(_get_header_style, _set_header_style)
def _get_border(self):
"""Controls printing of border around table
Arguments:
border - print a border around the table (True or False)"""
return self._border
def _set_border(self, val):
self._validate_option("border", val)
self._border = val
border = property(_get_border, _set_border)
def _get_hrules(self):
"""Controls printing of horizontal rules after rows
Arguments:
hrules - horizontal rules style. Allowed values: FRAME, ALL, HEADER, NONE"""
return self._hrules
def _set_hrules(self, val):
self._validate_option("hrules", val)
self._hrules = val
hrules = property(_get_hrules, _set_hrules)
def _get_vrules(self):
"""Controls printing of vertical rules between columns
Arguments:
vrules - vertical rules style. Allowed values: FRAME, ALL, NONE"""
return self._vrules
def _set_vrules(self, val):
self._validate_option("vrules", val)
self._vrules = val
vrules = property(_get_vrules, _set_vrules)
def _get_int_format(self):
"""Controls formatting of integer data
Arguments:
int_format - integer format string"""
return self._int_format
def _set_int_format(self, val):
# self._validate_option("int_format", val)
for field in self._field_names:
self._int_format[field] = val
int_format = property(_get_int_format, _set_int_format)
def _get_float_format(self):
"""Controls formatting of floating point data
Arguments:
float_format - floating point format string"""
return self._float_format
def _set_float_format(self, val):
# self._validate_option("float_format", val)
for field in self._field_names:
self._float_format[field] = val
float_format = property(_get_float_format, _set_float_format)
def _get_padding_width(self):
"""The number of empty spaces between a column's edge and its content
Arguments:
padding_width - number of spaces, must be a positive integer"""
return self._padding_width
def _set_padding_width(self, val):
self._validate_option("padding_width", val)
self._padding_width = val
padding_width = property(_get_padding_width, _set_padding_width)
def _get_left_padding_width(self):
"""The number of empty spaces between a column's left edge and its content
Arguments:
left_padding - number of spaces, must be a positive integer"""
return self._left_padding_width
def _set_left_padding_width(self, val):
self._validate_option("left_padding_width", val)
self._left_padding_width = val
left_padding_width = property(_get_left_padding_width, _set_left_padding_width)
def _get_right_padding_width(self):
"""The number of empty spaces between a column's right edge and its content
Arguments:
right_padding - number of spaces, must be a positive integer"""
return self._right_padding_width
def _set_right_padding_width(self, val):
self._validate_option("right_padding_width", val)
self._right_padding_width = val
right_padding_width = property(_get_right_padding_width, _set_right_padding_width)
def _get_vertical_char(self):
"""The charcter used when printing table borders to draw vertical lines
Arguments:
vertical_char - single character string used to draw vertical lines"""
return self._vertical_char
def _set_vertical_char(self, val):
val = self._unicode(val)
self._validate_option("vertical_char", val)
self._vertical_char = val
vertical_char = property(_get_vertical_char, _set_vertical_char)
def _get_horizontal_char(self):
"""The charcter used when printing table borders to draw horizontal lines
Arguments:
horizontal_char - single character string used to draw horizontal lines"""
return self._horizontal_char
def _set_horizontal_char(self, val):
val = self._unicode(val)
self._validate_option("horizontal_char", val)
self._horizontal_char = val
horizontal_char = property(_get_horizontal_char, _set_horizontal_char)
def _get_junction_char(self):
"""The charcter used when printing table borders to draw line junctions
Arguments:
junction_char - single character string used to draw line junctions"""
return self._junction_char
def _set_junction_char(self, val):
val = self._unicode(val)
self._validate_option("vertical_char", val)
self._junction_char = val
junction_char = property(_get_junction_char, _set_junction_char)
def _get_format(self):
"""Controls whether or not HTML tables are formatted to match styling options
Arguments:
format - True or False"""
return self._format
def _set_format(self, val):
self._validate_option("format", val)
self._format = val
format = property(_get_format, _set_format)
def _get_print_empty(self):
"""Controls whether or not empty tables produce a header and frame or just an empty string
Arguments:
print_empty - True or False"""
return self._print_empty
def _set_print_empty(self, val):
self._validate_option("print_empty", val)
self._print_empty = val
print_empty = property(_get_print_empty, _set_print_empty)
def _get_attributes(self):
"""A dictionary of HTML attribute name/value pairs to be included in the <table> tag when printing HTML
Arguments:
attributes - dictionary of attributes"""
return self._attributes
def _set_attributes(self, val):
self._validate_option("attributes", val)
self._attributes = val
attributes = property(_get_attributes, _set_attributes)
##############################
# OPTION MIXER #
##############################
def _get_options(self, kwargs):
options = {}
for option in self._options:
if option in kwargs:
self._validate_option(option, kwargs[option])
options[option] = kwargs[option]
else:
options[option] = getattr(self, "_"+option)
return options
##############################
# PRESET STYLE LOGIC #
##############################
def set_style(self, style):
if style == DEFAULT:
self._set_default_style()
elif style == MSWORD_FRIENDLY:
self._set_msword_style()
elif style == PLAIN_COLUMNS:
self._set_columns_style()
elif style == RANDOM:
self._set_random_style()
else:
raise Exception("Invalid pre-set style!")
def _set_default_style(self):
self.header = True
self.border = True
self._hrules = FRAME
self._vrules = ALL
self.padding_width = 1
self.left_padding_width = 1
self.right_padding_width = 1
self.vertical_char = "|"
self.horizontal_char = "-"
self.junction_char = "+"
def _set_msword_style(self):
self.header = True
self.border = True
self._hrules = NONE
self.padding_width = 1
self.left_padding_width = 1
self.right_padding_width = 1
self.vertical_char = "|"
def _set_columns_style(self):
self.header = True
self.border = False
self.padding_width = 1
self.left_padding_width = 0
self.right_padding_width = 8
def _set_random_style(self):
# Just for fun!
self.header = random.choice((True, False))
self.border = random.choice((True, False))
self._hrules = random.choice((ALL, FRAME, HEADER, NONE))
self._vrules = random.choice((ALL, FRAME, NONE))
self.left_padding_width = random.randint(0,5)
self.right_padding_width = random.randint(0,5)
self.vertical_char = random.choice("~!@#$%^&*()_+|-=\{}[];':\",./;<>?")
self.horizontal_char = random.choice("~!@#$%^&*()_+|-=\{}[];':\",./;<>?")
self.junction_char = random.choice("~!@#$%^&*()_+|-=\{}[];':\",./;<>?")
##############################
# DATA INPUT METHODS #
##############################
def add_row(self, row):
"""Add a row to the table
Arguments:
row - row of data, should be a list with as many elements as the table
has fields"""
if self._field_names and len(row) != len(self._field_names):
raise Exception("Row has incorrect number of values, (actual) %d!=%d (expected)" %(len(row),len(self._field_names)))
if not self._field_names:
self.field_names = [("Field %d" % (n+1)) for n in range(0,len(row))]
self._rows.append(list(row))
def del_row(self, row_index):
"""Delete a row to the table
Arguments:
row_index - The index of the row you want to delete. Indexing starts at 0."""
if row_index > len(self._rows)-1:
raise Exception("Cant delete row at index %d, table only has %d rows!" % (row_index, len(self._rows)))
del self._rows[row_index]
def add_column(self, fieldname, column, align="c", valign="t"):
"""Add a column to the table.
Arguments:
fieldname - name of the field to contain the new column of data
column - column of data, should be a list with as many elements as the
table has rows
align - desired alignment for this column - "l" for left, "c" for centre and "r" for right
valign - desired vertical alignment for new columns - "t" for top, "m" for middle and "b" for bottom"""
if len(self._rows) in (0, len(column)):
self._validate_align(align)
self._validate_valign(valign)
self._field_names.append(fieldname)
self._align[fieldname] = align
self._valign[fieldname] = valign
for i in range(0, len(column)):
if len(self._rows) < i+1:
self._rows.append([])
self._rows[i].append(column[i])
else:
raise Exception("Column length %d does not match number of rows %d!" % (len(column), len(self._rows)))
def clear_rows(self):
"""Delete all rows from the table but keep the current field names"""
self._rows = []
def clear(self):
"""Delete all rows and field names from the table, maintaining nothing but styling options"""
self._rows = []
self._field_names = []
self._widths = []
##############################
# MISC PUBLIC METHODS #
##############################
def copy(self):
return copy.deepcopy(self)
##############################
# MISC PRIVATE METHODS #
##############################
def _format_value(self, field, value):
if isinstance(value, int) and field in self._int_format:
value = self._unicode(("%%%sd" % self._int_format[field]) % value)
elif isinstance(value, float) and field in self._float_format:
value = self._unicode(("%%%sf" % self._float_format[field]) % value)
return self._unicode(value)
def _compute_widths(self, rows, options):
if options["header"]:
widths = [_get_size(field)[0] for field in self._field_names]
else:
widths = len(self.field_names) * [0]
for row in rows:
for index, value in enumerate(row):
fieldname = self.field_names[index]
if fieldname in self.max_width:
widths[index] = max(widths[index], min(_get_size(value)[0], self.max_width[fieldname]))
else:
widths[index] = max(widths[index], _get_size(value)[0])
self._widths = widths
def _get_padding_widths(self, options):
if options["left_padding_width"] is not None:
lpad = options["left_padding_width"]
else:
lpad = options["padding_width"]
if options["right_padding_width"] is not None:
rpad = options["right_padding_width"]
else:
rpad = options["padding_width"]
return lpad, rpad
def _get_rows(self, options):
"""Return only those data rows that should be printed, based on slicing and sorting.
Arguments:
options - dictionary of option settings."""
# Make a copy of only those rows in the slice range
rows = copy.deepcopy(self._rows[options["start"]:options["end"]])
# Sort if necessary
if options["sortby"]:
sortindex = self._field_names.index(options["sortby"])
# Decorate
rows = [[row[sortindex]]+row for row in rows]
# Sort
rows.sort(reverse=options["reversesort"], key=options["sort_key"])
# Undecorate
rows = [row[1:] for row in rows]
return rows
def _format_row(self, row, options):
return [self._format_value(field, value) for (field, value) in zip(self._field_names, row)]
def _format_rows(self, rows, options):
return [self._format_row(row, options) for row in rows]
##############################
# PLAIN TEXT STRING METHODS #
##############################
def get_string(self, **kwargs):
"""Return string representation of table in current state.
Arguments:
start - index of first data row to include in output
end - index of last data row to include in output PLUS ONE (list slice style)
fields - names of fields (columns) to include
header - print a header showing field names (True or False)
border - print a border around the table (True or False)
hrules - controls printing of horizontal rules after rows. Allowed values: ALL, FRAME, HEADER, NONE
vrules - controls printing of vertical rules between columns. Allowed values: FRAME, ALL, NONE
int_format - controls formatting of integer data
float_format - controls formatting of floating point data
padding_width - number of spaces on either side of column data (only used if left and right paddings are None)
left_padding_width - number of spaces on left hand side of column data
right_padding_width - number of spaces on right hand side of column data
vertical_char - single character string used to draw vertical lines
horizontal_char - single character string used to draw horizontal lines
junction_char - single character string used to draw line junctions
sortby - name of field to sort rows by
sort_key - sorting key function, applied to data points before sorting
reversesort - True or False to sort in descending or ascending order
print empty - if True, stringify just the header for an empty table, if False return an empty string """
options = self._get_options(kwargs)
lines = []
# Don't think too hard about an empty table
# Is this the desired behaviour? Maybe we should still print the header?
if self.rowcount == 0 and (not options["print_empty"] or not options["border"]):
return ""
# Get the rows we need to print, taking into account slicing, sorting, etc.
rows = self._get_rows(options)
# Turn all data in all rows into Unicode, formatted as desired
formatted_rows = self._format_rows(rows, options)
# Compute column widths
self._compute_widths(formatted_rows, options)
# Add header or top of border
self._hrule = self._stringify_hrule(options)
if options["header"]:
lines.append(self._stringify_header(options))
elif options["border"] and options["hrules"] in (ALL, FRAME):
lines.append(self._hrule)
# Add rows
for row in formatted_rows:
lines.append(self._stringify_row(row, options))
# Add bottom of border
if options["border"] and options["hrules"] == FRAME:
lines.append(self._hrule)
return self._unicode("\n").join(lines)
def _stringify_hrule(self, options):
if not options["border"]:
return ""
lpad, rpad = self._get_padding_widths(options)
if options['vrules'] in (ALL, FRAME):
bits = [options["junction_char"]]
else:
bits = [options["horizontal_char"]]
# For tables with no data or fieldnames
if not self._field_names:
bits.append(options["junction_char"])
return "".join(bits)
for field, width in zip(self._field_names, self._widths):
if options["fields"] and field not in options["fields"]:
continue
bits.append((width+lpad+rpad)*options["horizontal_char"])
if options['vrules'] == ALL:
bits.append(options["junction_char"])
else:
bits.append(options["horizontal_char"])
if options["vrules"] == FRAME:
bits.pop()
bits.append(options["junction_char"])
return "".join(bits)
def _stringify_header(self, options):
bits = []
lpad, rpad = self._get_padding_widths(options)
if options["border"]:
if options["hrules"] in (ALL, FRAME):
bits.append(self._hrule)
bits.append("\n")
if options["vrules"] in (ALL, FRAME):
bits.append(options["vertical_char"])
else:
bits.append(" ")
# For tables with no data or field names
if not self._field_names:
if options["vrules"] in (ALL, FRAME):
bits.append(options["vertical_char"])
else:
bits.append(" ")
for field, width, in zip(self._field_names, self._widths):
if options["fields"] and field not in options["fields"]:
continue
if self._header_style == "cap":
fieldname = field.capitalize()
elif self._header_style == "title":
fieldname = field.title()
elif self._header_style == "upper":
fieldname = field.upper()
elif self._header_style == "lower":
fieldname = field.lower()
else:
fieldname = field
bits.append(" " * lpad + self._justify(fieldname, width, self._align[field]) + " " * rpad)
if options["border"]:
if options["vrules"] == ALL:
bits.append(options["vertical_char"])
else:
bits.append(" ")
# If vrules is FRAME, then we just appended a space at the end
# of the last field, when we really want a vertical character
if options["border"] and options["vrules"] == FRAME:
bits.pop()
bits.append(options["vertical_char"])
if options["border"] and options["hrules"] != NONE:
bits.append("\n")
bits.append(self._hrule)
return "".join(bits)
def _stringify_row(self, row, options):
for index, field, value, width, in zip(range(0,len(row)), self._field_names, row, self._widths):
# Enforce max widths
lines = value.split("\n")
new_lines = []
for line in lines:
if _str_block_width(line) > width:
line = textwrap.fill(line, width)
new_lines.append(line)
lines = new_lines
value = "\n".join(lines)
row[index] = value
row_height = 0
for c in row:
h = _get_size(c)[1]
if h > row_height:
row_height = h
bits = []
lpad, rpad = self._get_padding_widths(options)
for y in range(0, row_height):
bits.append([])
if options["border"]:
if options["vrules"] in (ALL, FRAME):
bits[y].append(self.vertical_char)
else:
bits[y].append(" ")
for field, value, width, in zip(self._field_names, row, self._widths):
valign = self._valign[field]
lines = value.split("\n")
dHeight = row_height - len(lines)
if dHeight:
if valign == "m":
lines = [""] * int(dHeight / 2) + lines + [""] * (dHeight - int(dHeight / 2))
elif valign == "b":
lines = [""] * dHeight + lines
else:
lines = lines + [""] * dHeight
y = 0
for l in lines:
if options["fields"] and field not in options["fields"]:
continue
bits[y].append(" " * lpad + self._justify(l, width, self._align[field]) + " " * rpad)
if options["border"]:
if options["vrules"] == ALL:
bits[y].append(self.vertical_char)
else:
bits[y].append(" ")
y += 1
# If vrules is FRAME, then we just appended a space at the end
# of the last field, when we really want a vertical character
for y in range(0, row_height):
if options["border"] and options["vrules"] == FRAME:
bits[y].pop()
bits[y].append(options["vertical_char"])
if options["border"] and options["hrules"]== ALL:
bits[row_height-1].append("\n")
bits[row_height-1].append(self._hrule)
for y in range(0, row_height):
bits[y] = "".join(bits[y])
return "\n".join(bits)
##############################
# HTML STRING METHODS #
##############################
def get_html_string(self, **kwargs):
"""Return string representation of HTML formatted version of table in current state.
Arguments:
start - index of first data row to include in output
end - index of last data row to include in output PLUS ONE (list slice style)
fields - names of fields (columns) to include
header - print a header showing field names (True or False)
border - print a border around the table (True or False)
hrules - controls printing of horizontal rules after rows. Allowed values: ALL, FRAME, HEADER, NONE
vrules - controls printing of vertical rules between columns. Allowed values: FRAME, ALL, NONE
int_format - controls formatting of integer data
float_format - controls formatting of floating point data
padding_width - number of spaces on either side of column data (only used if left and right paddings are None)
left_padding_width - number of spaces on left hand side of column data
right_padding_width - number of spaces on right hand side of column data
sortby - name of field to sort rows by
sort_key - sorting key function, applied to data points before sorting
attributes - dictionary of name/value pairs to include as HTML attributes in the <table> tag
xhtml - print <br/> tags if True, <br> tags if false"""
options = self._get_options(kwargs)
if options["format"]:
string = self._get_formatted_html_string(options)
else:
string = self._get_simple_html_string(options)
return string
def _get_simple_html_string(self, options):
lines = []
if options["xhtml"]:
linebreak = "<br/>"
else:
linebreak = "<br>"
open_tag = []
open_tag.append("<table")
if options["attributes"]:
for attr_name in options["attributes"]:
open_tag.append(" %s=\"%s\"" % (attr_name, options["attributes"][attr_name]))
open_tag.append(">")
lines.append("".join(open_tag))
# Headers
if options["header"]:
lines.append(" <tr>")
for field in self._field_names:
if options["fields"] and field not in options["fields"]:
continue
lines.append(" <th>%s</th>" % escape(field).replace("\n", linebreak))
lines.append(" </tr>")
# Data
rows = self._get_rows(options)
formatted_rows = self._format_rows(rows, options)
for row in formatted_rows:
lines.append(" <tr>")
for field, datum in zip(self._field_names, row):
if options["fields"] and field not in options["fields"]:
continue
lines.append(" <td>%s</td>" % escape(datum).replace("\n", linebreak))
lines.append(" </tr>")
lines.append("</table>")
return self._unicode("\n").join(lines)
def _get_formatted_html_string(self, options):
lines = []
lpad, rpad = self._get_padding_widths(options)
if options["xhtml"]:
linebreak = "<br/>"
else:
linebreak = "<br>"
open_tag = []
open_tag.append("<table")
if options["border"]:
if options["hrules"] == ALL and options["vrules"] == ALL:
open_tag.append(" frame=\"box\" rules=\"all\"")
elif options["hrules"] == FRAME and options["vrules"] == FRAME:
open_tag.append(" frame=\"box\"")
elif options["hrules"] == FRAME and options["vrules"] == ALL:
open_tag.append(" frame=\"box\" rules=\"cols\"")
elif options["hrules"] == FRAME:
open_tag.append(" frame=\"hsides\"")
elif options["hrules"] == ALL:
open_tag.append(" frame=\"hsides\" rules=\"rows\"")
elif options["vrules"] == FRAME:
open_tag.append(" frame=\"vsides\"")
elif options["vrules"] == ALL:
open_tag.append(" frame=\"vsides\" rules=\"cols\"")
if options["attributes"]:
for attr_name in options["attributes"]:
open_tag.append(" %s=\"%s\"" % (attr_name, options["attributes"][attr_name]))
open_tag.append(">")
lines.append("".join(open_tag))
# Headers
if options["header"]:
lines.append(" <tr>")
for field in self._field_names:
if options["fields"] and field not in options["fields"]:
continue
lines.append(" <th style=\"padding-left: %dem; padding-right: %dem; text-align: center\">%s</th>" % (lpad, rpad, escape(field).replace("\n", linebreak)))
lines.append(" </tr>")
# Data
rows = self._get_rows(options)
formatted_rows = self._format_rows(rows, options)
aligns = []
valigns = []
for field in self._field_names:
aligns.append({ "l" : "left", "r" : "right", "c" : "center" }[self._align[field]])
valigns.append({"t" : "top", "m" : "middle", "b" : "bottom"}[self._valign[field]])
for row in formatted_rows:
lines.append(" <tr>")
for field, datum, align, valign in zip(self._field_names, row, aligns, valigns):
if options["fields"] and field not in options["fields"]:
continue
lines.append(" <td style=\"padding-left: %dem; padding-right: %dem; text-align: %s; vertical-align: %s\">%s</td>" % (lpad, rpad, align, valign, escape(datum).replace("\n", linebreak)))
lines.append(" </tr>")
lines.append("</table>")
return self._unicode("\n").join(lines)
##############################
# UNICODE WIDTH FUNCTIONS #
##############################
def _char_block_width(char):
# Basic Latin, which is probably the most common case
#if char in xrange(0x0021, 0x007e):
#if char >= 0x0021 and char <= 0x007e:
if 0x0021 <= char <= 0x007e:
return 1
# Chinese, Japanese, Korean (common)
if 0x4e00 <= char <= 0x9fff:
return 2
# Hangul
if 0xac00 <= char <= 0xd7af:
return 2
# Combining?
if unicodedata.combining(uni_chr(char)):
return 0
# Hiragana and Katakana
if 0x3040 <= char <= 0x309f or 0x30a0 <= char <= 0x30ff:
return 2
# Full-width Latin characters
if 0xff01 <= char <= 0xff60:
return 2
# CJK punctuation
if 0x3000 <= char <= 0x303e:
return 2
# Backspace and delete
if char in (0x0008, 0x007f):
return -1
# Other control characters
elif char in (0x0000, 0x001f):
return 0
# Take a guess
return 1
def _str_block_width(val):
return sum(itermap(_char_block_width, itermap(ord, _re.sub("", val))))
##############################
# TABLE FACTORIES #
##############################
def from_csv(fp, field_names = None, **kwargs):
dialect = csv.Sniffer().sniff(fp.read(1024))
fp.seek(0)
reader = csv.reader(fp, dialect)
table = PrettyTable(**kwargs)
if field_names:
table.field_names = field_names
else:
if py3k:
table.field_names = [x.strip() for x in next(reader)]
else:
table.field_names = [x.strip() for x in reader.next()]
for row in reader:
table.add_row([x.strip() for x in row])
return table
def from_db_cursor(cursor, **kwargs):
if cursor.description:
table = PrettyTable(**kwargs)
table.field_names = [col[0] for col in cursor.description]
for row in cursor.fetchall():
table.add_row(row)
return table
class TableHandler(HTMLParser):
def __init__(self, **kwargs):
HTMLParser.__init__(self)
self.kwargs = kwargs
self.tables = []
self.last_row = []
self.rows = []
self.max_row_width = 0
self.active = None
self.last_content = ""
self.is_last_row_header = False
def handle_starttag(self,tag, attrs):
self.active = tag
if tag == "th":
self.is_last_row_header = True
def handle_endtag(self,tag):
if tag in ["th", "td"]:
stripped_content = self.last_content.strip()
self.last_row.append(stripped_content)
if tag == "tr":
self.rows.append(
(self.last_row, self.is_last_row_header))
self.max_row_width = max(self.max_row_width, len(self.last_row))
self.last_row = []
self.is_last_row_header = False
if tag == "table":
table = self.generate_table(self.rows)
self.tables.append(table)
self.rows = []
self.last_content = " "
self.active = None
def handle_data(self, data):
self.last_content += data
def generate_table(self, rows):
"""
Generates from a list of rows a PrettyTable object.
"""
table = PrettyTable(**self.kwargs)
for row in self.rows:
if len(row[0]) < self.max_row_width:
appends = self.max_row_width - len(row[0])
for i in range(1,appends):
row[0].append("-")
if row[1] == True:
self.make_fields_unique(row[0])
table.field_names = row[0]
else:
table.add_row(row[0])
return table
def make_fields_unique(self, fields):
"""
iterates over the row and make each field unique
"""
for i in range(0, len(fields)):
for j in range(i+1, len(fields)):
if fields[i] == fields[j]:
fields[j] += "'"
def from_html(html_code, **kwargs):
"""
Generates a list of PrettyTables from a string of HTML code. Each <table> in
the HTML becomes one PrettyTable object.
"""
parser = TableHandler(**kwargs)
parser.feed(html_code)
return parser.tables
def from_html_one(html_code, **kwargs):
"""
Generates a PrettyTables from a string of HTML code which contains only a
single <table>
"""
tables = from_html(html_code, **kwargs)
try:
assert len(tables) == 1
except AssertionError:
raise Exception("More than one <table> in provided HTML code! Use from_html instead.")
return tables[0]
##############################
# MAIN (TEST FUNCTION) #
##############################
def main():
x = PrettyTable(["City name", "Area", "Population", "Annual Rainfall"])
x.sortby = "Population"
x.reversesort = True
x.int_format["Area"] = "04d"
x.float_format = "6.1f"
x.align["City name"] = "l" # Left align city names
x.add_row(["Adelaide", 1295, 1158259, 600.5])
x.add_row(["Brisbane", 5905, 1857594, 1146.4])
x.add_row(["Darwin", 112, 120900, 1714.7])
x.add_row(["Hobart", 1357, 205556, 619.5])
x.add_row(["Sydney", 2058, 4336374, 1214.8])
x.add_row(["Melbourne", 1566, 3806092, 646.9])
x.add_row(["Perth", 5386, 1554769, 869.4])
print(x)
if __name__ == "__main__":
main()
Zerion Mini Shell 1.0