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#!/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()
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