Source code for gemseo.third_party.prettytable.prettytable

# -*- coding: utf-8 -*-
# Copyright (c) 2009-2014, Luke Maurits <luke@maurits.id.au>
# All rights reserved.
# With contributions from:
# * Chris Clark
#  * Klein Stephane
#  * John Filleau
# PTable is forked from original Google Code page in April, 2015, and now
# maintained by Kane Blueriver <kxxoling@gmail.com>.
#
# 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.
# Taken from :
# https://github.com/kxxoling/PTable
# https://pypi.python.org/pypi/PTable
"""
The pretty table core
*********************
"""
from __future__ import ( division, 
                        unicode_literals)

import copy
import math
import random
import re
import sys
import textwrap
import unicodedata


from ._compact import (basestring_, escape, itermap, str_types, uni_chr,
                       unicode_)


PY2 = sys.version_info.major == 2




# 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):
    """

    :param text:

    """
    lines = text.split("\n")
    height = len(lines)
    width = max([_str_block_width(line) for line in lines])
    return width, height


[docs]class PrettyTable(object): def __init__(self, field_names=None, **kwargs): """ :param encoding: Unicode encoding scheme used to decode any encoded input :param title: optional table title :param field_names: list or tuple of field names :param fields: list or tuple of field names to include in displays :param start: index of first data row to include in output :param end: index of last data row to include in output PLUS ONE :param header: print a header showing field names :param header_style: stylisation to apply to field names in header :param border: print a border around the table :param hrules: controls printing of horizontal rules after rows :param vrules: controls printing of vertical rules between columns :param int_format: controls formatting of integer data :param float_format: controls formatting of floating point data :param min_table_width: minimum desired table width :param max_table_width: maximum desired table width :param padding_width: number of spaces on either side of column data :param left_padding_width: number of spaces on left hand side of column data :param right_padding_width: number of spaces on right hand side of column data :param vertical_char: single character string used to draw vertical lines :param horizontal_char: single character string used to draw horizontal lines :param junction_char: single character string used to draw line junctions :param sortby: name of field to sort rows by :param sort_key: sorting key function :param valign: default valign for each row :param reversesort: True or False to sort in descending or ascending order :param oldsortslice: Slice rows before sorting in the """ self.encoding = kwargs.get("encoding", "UTF-8") # Data self._field_names = [] self._rows = [] self.align = {} self.valign = {} self.max_width = {} self.min_width = {} self.int_format = {} self.float_format = {} if field_names: self.field_names = field_names else: self._widths = [] # Options self._options = "title start end fields header border sortby reversesort sort_key attributes format hrules vrules".split() self._options.extend( "int_format float_format min_table_width max_table_width padding_width left_padding_width right_padding_width".split()) self._options.extend( "vertical_char horizontal_char junction_char header_style valign xhtml print_empty oldsortslice".split()) self._options.extend("align valign max_width min_width".split()) for option in self._options: if option in kwargs: self._validate_option(option, kwargs[option]) else: kwargs[option] = None self._title = kwargs["title"] or 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) # Column specific arguments, use property.setters self.align = kwargs["align"] or {} self.valign = kwargs["valign"] or {} self.max_width = kwargs["max_width"] or {} self.min_width = kwargs["min_width"] or {} self.int_format = kwargs["int_format"] or {} self.float_format = kwargs["float_format"] or {} self._min_table_width = kwargs["min_table_width"] or None self._max_table_width = kwargs["max_table_width"] or None if kwargs["padding_width"] is None: self._padding_width = 1 else: self._padding_width = kwargs["padding_width"] 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 if kwargs["oldsortslice"] in (True, False): self._oldsortslice = kwargs["oldsortslice"] else: self._oldsortslice = False self._format = kwargs["format"] or False self._xhtml = kwargs["xhtml"] or False self._attributes = kwargs["attributes"] or {} def _unicode(self, value): """ :param 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): """ :param text: param width: :param align: :param width: """ 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 def __str__(self): return self.__unicode__() 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): """ :param option: param val: :param val: """ if option in "field_names": self._validate_field_names(val) elif option in ("start", "end", "max_width", "min_width", "min_table_width", "max_table_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", "oldsortslice"): 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) def _validate_field_names(self, val): """ :param 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): """ :param 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): """ :param 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): """ :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param val: """ if val == "": return try: assert type(val) in str_types 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): """ :param name: param val: :param val: """ return if val == "": return try: val = val.rsplit('f')[0] assert type(val) in str_types 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): """ :param name: param val: :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param 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): """ :param name: param val: :param val: """ try: assert isinstance(val, dict) except AssertionError: raise Exception( "attributes must be a dictionary of name/value pairs!") ############################## # ATTRIBUTE MANAGEMENT # ############################## @property def field_names(self): """List or tuple of field names""" return self._field_names @field_names.setter def field_names(self, val): """ :param 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: self.align = "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: self.valign = "t" @property def align(self): """Controls alignment of fields :param align: alignment """ return self._align @align.setter def align(self, val): """ :param val: """ if not self._field_names: self._align = {} elif val is None or (isinstance(val, dict) and len(val) == 0): for field in self._field_names: self._align[field] = "c" else: self._validate_align(val) for field in self._field_names: self._align[field] = val @property def valign(self): """Controls vertical alignment of fields :param valign: vertical alignment """ return self._valign @valign.setter def valign(self, val): """ :param val: """ if not self._field_names: self._valign = {} elif val is None or (isinstance(val, dict) and len(val) == 0): for field in self._field_names: self._valign[field] = "t" else: self._validate_valign(val) for field in self._field_names: self._valign[field] = val @property def max_width(self): """Controls maximum width of fields :param max_width: maximum width integer """ return self._max_width @max_width.setter def max_width(self, val): """ :param val: """ if val is None or (isinstance(val, dict) and len(val) == 0): self._max_width = {} else: self._validate_option("max_width", val) for field in self._field_names: self._max_width[field] = val @property def min_width(self): """Controls minimum width of fields :param min_width: minimum width integer """ if self.header: fields = self._field_names else: fields = self._rows[0] if self._rows else [] result = { # minimum column width can't be lesser # than header's length name: max( _str_block_width(unicode_(name)), self._min_width.get(name, 0) ) for name in fields } return result @min_width.setter def min_width(self, val): """ :param val: """ if val is None or (isinstance(val, dict) and len(val) == 0): self._min_width = {} else: self._validate_option("min_width", val) for field in self._field_names: self._min_width[field] = val @property def min_table_width(self): """ """ return self._min_table_width @min_table_width.setter def min_table_width(self, val): """ :param val: """ self._validate_option("min_table_width", val) self._min_table_width = val @property def max_table_width(self): """ """ return self._max_table_width @max_table_width.setter def max_table_width(self, val): """ :param val: """ self._validate_option("max_table_width", val) self._max_table_width = val @property def fields(self): """List or tuple of field names to include in displays""" return self._fields @fields.setter def fields(self, val): """ :param val: """ self._validate_option("fields", val) self._fields = val @property def title(self): """Optional table title :param title: table title """ return self._title @title.setter def title(self, val): """ :param val: """ self._title = self._unicode(val) @property def start(self): """Start index of the range of rows to print :param start: index of first data row to include in output """ return self._start @start.setter def start(self, val): """ :param val: """ self._validate_option("start", val) self._start = val @property def end(self): """End index of the range of rows to print :param end: index of last data row to include in output PLUS ONE """ return self._end @end.setter def end(self, val): """ :param val: """ self._validate_option("end", val) self._end = val @property def sortby(self): """Name of field by which to sort rows :param sortby: field name to sort by """ return self._sortby @sortby.setter def sortby(self, val): """ :param val: """ self._validate_option("sortby", val) self._sortby = val @property def reversesort(self): """Controls direction of sorting (ascending vs descending) :param reveresort: set to True to sort by descending order """ return self._reversesort @reversesort.setter def reversesort(self, val): """ :param val: """ self._validate_option("reversesort", val) self._reversesort = val @property def sort_key(self): """Sorting key function, applied to data points before sorting :param sort_key: a function which takes one argument and returns something to be sorted """ return self._sort_key @sort_key.setter def sort_key(self, val): """ :param val: """ self._validate_option("sort_key", val) self._sort_key = val @property def header(self): """Controls printing of table header with field names :param header: print a header showing field names """ return self._header @header.setter def header(self, val): """ :param val: """ self._validate_option("header", val) self._header = val @property def header_style(self): """Controls stylisation applied to field names in header :param header_style: stylisation to apply to field names in header """ return self._header_style @header_style.setter def header_style(self, val): """ :param val: """ self._validate_header_style(val) self._header_style = val @property def border(self): """Controls printing of border around table :param border: print a border around the table """ return self._border @border.setter def border(self, val): """ :param val: """ self._validate_option("border", val) self._border = val @property def hrules(self): """Controls printing of horizontal rules after rows :param hrules: horizontal rules style """ return self._hrules @hrules.setter def hrules(self, val): """ :param val: """ self._validate_option("hrules", val) self._hrules = val @property def vrules(self): """Controls printing of vertical rules between columns :param vrules: vertical rules style """ return self._vrules @vrules.setter def vrules(self, val): """ :param val: """ self._validate_option("vrules", val) self._vrules = val @property def int_format(self): """Controls formatting of integer data :param int_format: integer format string """ return self._int_format @int_format.setter def int_format(self, val): """ :param val: """ if val is None or (isinstance(val, dict) and len(val) == 0): self._int_format = {} else: self._validate_option("int_format", val) for field in self._field_names: self._int_format[field] = val @property def float_format(self): """Controls formatting of floating point data :param float_format: floating point format string """ return self._float_format @float_format.setter def float_format(self, val): """ :param val: """ if val is None or (isinstance(val, dict) and len(val) == 0): self._float_format = {} else: self._validate_option("float_format", val) for field in self._field_names: self._float_format[field] = val @property def padding_width(self): """The number of empty spaces between a column's edge and its content :param padding_width: number of spaces """ return self._padding_width @padding_width.setter def padding_width(self, val): """ :param val: """ self._validate_option("padding_width", val) self._padding_width = val @property def left_padding_width(self): """The number of empty spaces between a column's left edge and its content :param left_padding: number of spaces """ return self._left_padding_width @left_padding_width.setter def left_padding_width(self, val): """ :param val: """ self._validate_option("left_padding_width", val) self._left_padding_width = val @property def right_padding_width(self): """The number of empty spaces between a column's right edge and its content :param right_padding: number of spaces """ return self._right_padding_width @right_padding_width.setter def right_padding_width(self, val): """ :param val: """ self._validate_option("right_padding_width", val) self._right_padding_width = val @property def vertical_char(self): """The charcter used when printing table borders to draw vertical lines :param vertical_char: single character string used to draw vertical lines """ return self._vertical_char @vertical_char.setter def vertical_char(self, val): """ :param val: """ val = self._unicode(val) self._validate_option("vertical_char", val) self._vertical_char = val @property def horizontal_char(self): """The charcter used when printing table borders to draw horizontal lines :param horizontal_char: single character string used to draw horizontal lines """ return self._horizontal_char @horizontal_char.setter def horizontal_char(self, val): """ :param val: """ val = self._unicode(val) self._validate_option("horizontal_char", val) self._horizontal_char = val @property def junction_char(self): """The charcter used when printing table borders to draw line junctions :param junction_char: single character string used to draw line junctions """ return self._junction_char @junction_char.setter def junction_char(self, val): """ :param val: """ val = self._unicode(val) self._validate_option("vertical_char", val) self._junction_char = val @property def format(self): """Controls whether or not HTML tables are formatted to match styling options :param format: True or False """ return self._format @format.setter def format(self, val): """ :param val: """ self._validate_option("format", val) self._format = val @property def print_empty(self): """Controls whether or not empty tables produce a header and frame or just an empty string :param print_empty: True or False """ return self._print_empty @print_empty.setter def print_empty(self, val): """ :param val: """ self._validate_option("print_empty", val) self._print_empty = val @property def 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 @attributes.setter def attributes(self, val): """ :param val: """ self._validate_option("attributes", val) self._attributes = val @property def oldsortslice(self): """oldsortslice - Slice rows before sorting in the 'old style' """ return self._oldsortslice @oldsortslice.setter def oldsortslice(self, val): """ :param val: """ self._validate_option("oldsortslice", val) self._oldsortslice = val ############################## # OPTION MIXER # ############################## def _get_options(self, kwargs): """ :param 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 # ##############################
[docs] def set_style(self, style): """ :param 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 # ##############################
[docs] def add_row(self, row): """Add a row to the table :param row: row of data :param 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))
[docs] def del_row(self, row_index): """Delete a row to the table :param row_index: The index of the row you want to delete """ 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]
[docs] def add_column(self, fieldname, column, align="c", valign="t"): """Add a column to the table. :param fieldname: name of the field to contain the new column of data :param column: column of data :param table: has rows :param align: desired alignment for this column (Default value = "c") :param valign: desired vertical alignment for new columns (Default value = "t") """ 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)))
[docs] def clear_rows(self): """Delete all rows from the table but keep the current field names""" self._rows = []
[docs] 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 # ##############################
[docs] def copy(self): """ """ return copy.deepcopy(self)
############################## # MISC PRIVATE METHODS # ############################## def _format_value(self, field, value): """ :param field: param value: :param 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( (self._float_format[field]) % value) return self._unicode(value) def _compute_table_width(self, options): """ :param options: """ table_width = 2 if options["vrules"] in (FRAME, ALL) else 0 per_col_padding = sum(self._get_padding_widths(options)) for index, fieldname in enumerate(self.field_names): if not options["fields"] or ( options["fields"] and fieldname in options["fields"]): table_width += self._widths[index] + per_col_padding return table_width def _compute_widths(self, rows, options): """ :param rows: param options: :param 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]) if fieldname in self.min_width: widths[index] = max( widths[index], self.min_width[fieldname]) self._widths = widths # Are we exceeding max_table_width? if self._max_table_width: table_width = self._compute_table_width(options) if table_width > self._max_table_width: # get dict with minimum widths for fields min_width = self.min_width # first calculate width for paddings and vrules this # space we can't shrink. # Space for vrules nonshrinkable = 2 if options["vrules"] in (FRAME, ALL) else 0 # Space for vrules between columns nonshrinkable += len(self._field_names) - 1 # Space for padding in each column per_col_padding = sum(self._get_padding_widths(options)) nonshrinkable += len(widths) * per_col_padding # Min space for each column nonshrinkable += sum(min_width.values()) # Shrink widths in proportion scale = float( self._max_table_width - nonshrinkable) / (table_width - nonshrinkable) def calculate_new_width(field_name, old_width): """ :param field_name: param old_width: :param old_width: """ width = min_width[field_name] # scale according to recalculated table width scaled_part = int(math.floor((old_width - width) * scale)) # enforce minimum column width as 1 symbol return max(1, width + scaled_part) widths = list(map( calculate_new_width, self._field_names, widths )) self._widths = widths # Are we under min_table_width or title width? if self._min_table_width or options["title"]: if options["title"]: title_width = len( options["title"]) + sum(self._get_padding_widths(options)) if options["vrules"] in (FRAME, ALL): title_width += 2 else: title_width = 0 min_table_width = self.min_table_width or 0 min_width = max(title_width, min_table_width) table_width = self._compute_table_width(options) if table_width < min_width: # Grow widths in proportion scale = 1.0 * min_width / table_width widths = [int(math.ceil(w * scale)) for w in widths] self._widths = widths def _get_padding_widths(self, options): """ :param 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): """ :param options: dictionary of option settings """ if options["oldsortslice"]: rows = copy.deepcopy(self._rows[options["start"]:options["end"]]) else: rows = copy.deepcopy(self._rows) # Sort 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] # Slice if necessary if not options["oldsortslice"]: rows = rows[options["start"]:options["end"]] return rows def _format_row(self, row, options): """ :param row: param options: :param options: """ return [self._format_value(field, value) for (field, value) in zip(self._field_names, row)] def _format_rows(self, rows, options): """ :param rows: param options: :param options: """ return [self._format_row(row, options) for row in rows] ############################## # PLAIN TEXT STRING METHODS # ##############################
[docs] def get_string(self, **kwargs): """ :param title: optional table title :param start: index of first data row to include in output :param end: index of last data row to include in output PLUS ONE :param fields: names of fields :param header: print a header showing field names :param border: print a border around the table :param hrules: controls printing of horizontal rules after rows :param vrules: controls printing of vertical rules between columns :param int_format: controls formatting of integer data :param float_format: controls formatting of floating point data :param padding_width: number of spaces on either side of column data :param left_padding_width: number of spaces on left hand side of column data :param right_padding_width: number of spaces on right hand side of column data :param vertical_char: single character string used to draw vertical lines :param horizontal_char: single character string used to draw horizontal lines :param junction_char: single character string used to draw line junctions :param sortby: name of field to sort rows by :param sort_key: sorting key function :param reversesort: True or False to sort in descending or ascending order :param print: empty """ 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) self._hrule = self._stringify_hrule(options) # Add title title = options["title"] or self._title if title: lines.append(self._stringify_title(title, options)) # Add header or top of border 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): """ :param 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_title(self, title, options): """ :param title: param options: :param options: """ lines = [] lpad, rpad = self._get_padding_widths(options) if options["border"]: if options["vrules"] == ALL: options["vrules"] = FRAME lines.append(self._stringify_hrule(options)) options["vrules"] = ALL elif options["vrules"] == FRAME: lines.append(self._stringify_hrule(options)) bits = [] endpoint = options["vertical_char"] if options[ "vrules"] in (ALL, FRAME) else " " bits.append(endpoint) title = " " * lpad + title + " " * rpad bits.append(self._justify(title, len(self._hrule) - 2, "c")) bits.append(endpoint) lines.append("".join(bits)) return "\n".join(lines) def _stringify_header(self, options): """ :param 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): """ :param row: param options: :param options: """ for index, field, value, width, in zip( list(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)
[docs] def paginate(self, page_length=58, **kwargs): """ :param page_length: Default value = 58) """ pages = [] kwargs["start"] = kwargs.get("start", 0) true_end = kwargs.get("end", self.rowcount) while True: kwargs["end"] = min(kwargs["start"] + page_length, true_end) pages.append(self.get_string(**kwargs)) if kwargs["end"] == true_end: break kwargs["start"] += page_length return "\f".join(pages)
############################## # HTML STRING METHODS # ##############################
[docs] def get_html_string(self, **kwargs): """ :param title: optional table title :param start: index of first data row to include in output :param end: index of last data row to include in output PLUS ONE :param fields: names of fields :param header: print a header showing field names :param border: print a border around the table :param hrules: controls printing of horizontal rules after rows :param vrules: controls printing of vertical rules between columns :param int_format: controls formatting of integer data :param float_format: controls formatting of floating point data :param padding_width: number of spaces on either side of column data :param left_padding_width: number of spaces on left hand side of column data :param right_padding_width: number of spaces on right hand side of column data :param sortby: name of field to sort rows by :param sort_key: sorting key function :param attributes: dictionary of name :param xhtml: print """ 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): """ :param options: """ lines = [] if options["xhtml"]: linebreak = "<br/>" else: linebreak = "<br>" open_tag = list() 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)) # Title title = options["title"] or self._title if title: cols = len( options["fields"]) if options["fields"] else len( self.field_names) lines.append(" <tr>") lines.append(" <td colspan=%d>%s</td>" % (cols, title)) lines.append(" </tr>") # 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): """ :param options: """ lines = [] lpad, rpad = self._get_padding_widths(options) if options["xhtml"]: linebreak = "<br/>" else: linebreak = "<br>" open_tag = list() 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)) # Title title = options["title"] or self._title if title: cols = len( options["fields"]) if options["fields"] else len( self.field_names) lines.append(" <tr>") lines.append(" <td colspan=%d>%s</td>" % (cols, title)) lines.append(" </tr>") # 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): """ :param 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, 0x000f, 0x001f): return 0 # Take a guess return 1 def _str_block_width(val): """ :param val: """ return sum(itermap(_char_block_width, itermap(ord, _re.sub("", val))))