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tabulate.py
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tabulate.py
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"""Pretty-print tabular data."""
from collections import namedtuple
from collections.abc import Iterable, Sized
from html import escape as htmlescape
from itertools import zip_longest as izip_longest
from functools import reduce, partial
import io
import re
import math
import textwrap
import dataclasses
try:
import wcwidth # optional wide-character (CJK) support
except ImportError:
wcwidth = None
def _is_file(f):
return isinstance(f, io.IOBase)
__all__ = ["tabulate", "tabulate_formats", "simple_separated_format"]
__version__ = "0.8.11"
# minimum extra space in headers
MIN_PADDING = 2
# Whether or not to preserve leading/trailing whitespace in data.
PRESERVE_WHITESPACE = False
_DEFAULT_FLOATFMT = "g"
_DEFAULT_INTFMT = ""
_DEFAULT_MISSINGVAL = ""
# default align will be overwritten by "left", "center" or "decimal"
# depending on the formatter
_DEFAULT_ALIGN = "default"
# if True, enable wide-character (CJK) support
WIDE_CHARS_MODE = wcwidth is not None
# Constant that can be used as part of passed rows to generate a separating line
# It is purposely an unprintable character, very unlikely to be used in a table
SEPARATING_LINE = "\001"
Line = namedtuple("Line", ["begin", "hline", "sep", "end"])
DataRow = namedtuple("DataRow", ["begin", "sep", "end"])
# A table structure is supposed to be:
#
# --- lineabove ---------
# headerrow
# --- linebelowheader ---
# datarow
# --- linebetweenrows ---
# ... (more datarows) ...
# --- linebetweenrows ---
# last datarow
# --- linebelow ---------
#
# TableFormat's line* elements can be
#
# - either None, if the element is not used,
# - or a Line tuple,
# - or a function: [col_widths], [col_alignments] -> string.
#
# TableFormat's *row elements can be
#
# - either None, if the element is not used,
# - or a DataRow tuple,
# - or a function: [cell_values], [col_widths], [col_alignments] -> string.
#
# padding (an integer) is the amount of white space around data values.
#
# with_header_hide:
#
# - either None, to display all table elements unconditionally,
# - or a list of elements not to be displayed if the table has column headers.
#
TableFormat = namedtuple(
"TableFormat",
[
"lineabove",
"linebelowheader",
"linebetweenrows",
"linebelow",
"headerrow",
"datarow",
"padding",
"with_header_hide",
],
)
def _is_separating_line(row):
row_type = type(row)
is_sl = (row_type == list or row_type == str) and (
(len(row) >= 1 and row[0] == SEPARATING_LINE)
or (len(row) >= 2 and row[1] == SEPARATING_LINE)
)
return is_sl
def _pipe_segment_with_colons(align, colwidth):
"""Return a segment of a horizontal line with optional colons which
indicate column's alignment (as in `pipe` output format)."""
w = colwidth
if align in ["right", "decimal"]:
return ("-" * (w - 1)) + ":"
elif align == "center":
return ":" + ("-" * (w - 2)) + ":"
elif align == "left":
return ":" + ("-" * (w - 1))
else:
return "-" * w
def _pipe_line_with_colons(colwidths, colaligns):
"""Return a horizontal line with optional colons to indicate column's
alignment (as in `pipe` output format)."""
if not colaligns: # e.g. printing an empty data frame (github issue #15)
colaligns = [""] * len(colwidths)
segments = [_pipe_segment_with_colons(a, w) for a, w in zip(colaligns, colwidths)]
return "|" + "|".join(segments) + "|"
def _mediawiki_row_with_attrs(separator, cell_values, colwidths, colaligns):
alignment = {
"left": "",
"right": 'align="right"| ',
"center": 'align="center"| ',
"decimal": 'align="right"| ',
}
# hard-coded padding _around_ align attribute and value together
# rather than padding parameter which affects only the value
values_with_attrs = [
" " + alignment.get(a, "") + c + " " for c, a in zip(cell_values, colaligns)
]
colsep = separator * 2
return (separator + colsep.join(values_with_attrs)).rstrip()
def _textile_row_with_attrs(cell_values, colwidths, colaligns):
cell_values[0] += " "
alignment = {"left": "<.", "right": ">.", "center": "=.", "decimal": ">."}
values = (alignment.get(a, "") + v for a, v in zip(colaligns, cell_values))
return "|" + "|".join(values) + "|"
def _html_begin_table_without_header(colwidths_ignore, colaligns_ignore):
# this table header will be suppressed if there is a header row
return "<table>\n<tbody>"
def _html_row_with_attrs(celltag, unsafe, cell_values, colwidths, colaligns):
alignment = {
"left": "",
"right": ' style="text-align: right;"',
"center": ' style="text-align: center;"',
"decimal": ' style="text-align: right;"',
}
if unsafe:
values_with_attrs = [
"<{0}{1}>{2}</{0}>".format(celltag, alignment.get(a, ""), c)
for c, a in zip(cell_values, colaligns)
]
else:
values_with_attrs = [
"<{0}{1}>{2}</{0}>".format(celltag, alignment.get(a, ""), htmlescape(c))
for c, a in zip(cell_values, colaligns)
]
rowhtml = "<tr>{}</tr>".format("".join(values_with_attrs).rstrip())
if celltag == "th": # it's a header row, create a new table header
rowhtml = f"<table>\n<thead>\n{rowhtml}\n</thead>\n<tbody>"
return rowhtml
def _moin_row_with_attrs(celltag, cell_values, colwidths, colaligns, header=""):
alignment = {
"left": "",
"right": '<style="text-align: right;">',
"center": '<style="text-align: center;">',
"decimal": '<style="text-align: right;">',
}
values_with_attrs = [
"{}{} {} ".format(celltag, alignment.get(a, ""), header + c + header)
for c, a in zip(cell_values, colaligns)
]
return "".join(values_with_attrs) + "||"
def _latex_line_begin_tabular(colwidths, colaligns, booktabs=False, longtable=False):
alignment = {"left": "l", "right": "r", "center": "c", "decimal": "r"}
tabular_columns_fmt = "".join([alignment.get(a, "l") for a in colaligns])
return "\n".join(
[
("\\begin{tabular}{" if not longtable else "\\begin{longtable}{")
+ tabular_columns_fmt
+ "}",
"\\toprule" if booktabs else "\\hline",
]
)
LATEX_ESCAPE_RULES = {
r"&": r"\&",
r"%": r"\%",
r"$": r"\$",
r"#": r"\#",
r"_": r"\_",
r"^": r"\^{}",
r"{": r"\{",
r"}": r"\}",
r"~": r"\textasciitilde{}",
"\\": r"\textbackslash{}",
r"<": r"\ensuremath{<}",
r">": r"\ensuremath{>}",
}
def _latex_row(cell_values, colwidths, colaligns, escrules=LATEX_ESCAPE_RULES):
def escape_char(c):
return escrules.get(c, c)
escaped_values = ["".join(map(escape_char, cell)) for cell in cell_values]
rowfmt = DataRow("", "&", "\\\\")
return _build_simple_row(escaped_values, rowfmt)
def _rst_escape_first_column(rows, headers):
def escape_empty(val):
if isinstance(val, (str, bytes)) and not val.strip():
return ".."
else:
return val
new_headers = list(headers)
new_rows = []
if headers:
new_headers[0] = escape_empty(headers[0])
for row in rows:
new_row = list(row)
if new_row:
new_row[0] = escape_empty(row[0])
new_rows.append(new_row)
return new_rows, new_headers
_table_formats = {
"simple": TableFormat(
lineabove=Line("", "-", " ", ""),
linebelowheader=Line("", "-", " ", ""),
linebetweenrows=None,
linebelow=Line("", "-", " ", ""),
headerrow=DataRow("", " ", ""),
datarow=DataRow("", " ", ""),
padding=0,
with_header_hide=["lineabove", "linebelow"],
),
"plain": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("", " ", ""),
datarow=DataRow("", " ", ""),
padding=0,
with_header_hide=None,
),
"grid": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("+", "=", "+", "+"),
linebetweenrows=Line("+", "-", "+", "+"),
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"simple_grid": TableFormat(
lineabove=Line("┌", "─", "┬", "┐"),
linebelowheader=Line("├", "─", "┼", "┤"),
linebetweenrows=Line("├", "─", "┼", "┤"),
linebelow=Line("└", "─", "┴", "┘"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"rounded_grid": TableFormat(
lineabove=Line("╭", "─", "┬", "╮"),
linebelowheader=Line("├", "─", "┼", "┤"),
linebetweenrows=Line("├", "─", "┼", "┤"),
linebelow=Line("╰", "─", "┴", "╯"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"double_grid": TableFormat(
lineabove=Line("╔", "═", "╦", "╗"),
linebelowheader=Line("╠", "═", "╬", "╣"),
linebetweenrows=Line("╠", "═", "╬", "╣"),
linebelow=Line("╚", "═", "╩", "╝"),
headerrow=DataRow("║", "║", "║"),
datarow=DataRow("║", "║", "║"),
padding=1,
with_header_hide=None,
),
"fancy_grid": TableFormat(
lineabove=Line("╒", "═", "╤", "╕"),
linebelowheader=Line("╞", "═", "╪", "╡"),
linebetweenrows=Line("├", "─", "┼", "┤"),
linebelow=Line("╘", "═", "╧", "╛"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"outline": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("+", "=", "+", "+"),
linebetweenrows=None,
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"simple_outline": TableFormat(
lineabove=Line("┌", "─", "┬", "┐"),
linebelowheader=Line("├", "─", "┼", "┤"),
linebetweenrows=None,
linebelow=Line("└", "─", "┴", "┘"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"rounded_outline": TableFormat(
lineabove=Line("╭", "─", "┬", "╮"),
linebelowheader=Line("├", "─", "┼", "┤"),
linebetweenrows=None,
linebelow=Line("╰", "─", "┴", "╯"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"double_outline": TableFormat(
lineabove=Line("╔", "═", "╦", "╗"),
linebelowheader=Line("╠", "═", "╬", "╣"),
linebetweenrows=None,
linebelow=Line("╚", "═", "╩", "╝"),
headerrow=DataRow("║", "║", "║"),
datarow=DataRow("║", "║", "║"),
padding=1,
with_header_hide=None,
),
"fancy_outline": TableFormat(
lineabove=Line("╒", "═", "╤", "╕"),
linebelowheader=Line("╞", "═", "╪", "╡"),
linebetweenrows=None,
linebelow=Line("╘", "═", "╧", "╛"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"github": TableFormat(
lineabove=Line("|", "-", "|", "|"),
linebelowheader=Line("|", "-", "|", "|"),
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=["lineabove"],
),
"pipe": TableFormat(
lineabove=_pipe_line_with_colons,
linebelowheader=_pipe_line_with_colons,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=["lineabove"],
),
"orgtbl": TableFormat(
lineabove=None,
linebelowheader=Line("|", "-", "+", "|"),
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"jira": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("||", "||", "||"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"presto": TableFormat(
lineabove=None,
linebelowheader=Line("", "-", "+", ""),
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("", "|", ""),
datarow=DataRow("", "|", ""),
padding=1,
with_header_hide=None,
),
"pretty": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("+", "-", "+", "+"),
linebetweenrows=None,
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"psql": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("|", "-", "+", "|"),
linebetweenrows=None,
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"rst": TableFormat(
lineabove=Line("", "=", " ", ""),
linebelowheader=Line("", "=", " ", ""),
linebetweenrows=None,
linebelow=Line("", "=", " ", ""),
headerrow=DataRow("", " ", ""),
datarow=DataRow("", " ", ""),
padding=0,
with_header_hide=None,
),
"mediawiki": TableFormat(
lineabove=Line(
'{| class="wikitable" style="text-align: left;"',
"",
"",
"\n|+ <!-- caption -->\n|-",
),
linebelowheader=Line("|-", "", "", ""),
linebetweenrows=Line("|-", "", "", ""),
linebelow=Line("|}", "", "", ""),
headerrow=partial(_mediawiki_row_with_attrs, "!"),
datarow=partial(_mediawiki_row_with_attrs, "|"),
padding=0,
with_header_hide=None,
),
"moinmoin": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=partial(_moin_row_with_attrs, "||", header="'''"),
datarow=partial(_moin_row_with_attrs, "||"),
padding=1,
with_header_hide=None,
),
"youtrack": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|| ", " || ", " || "),
datarow=DataRow("| ", " | ", " |"),
padding=1,
with_header_hide=None,
),
"html": TableFormat(
lineabove=_html_begin_table_without_header,
linebelowheader="",
linebetweenrows=None,
linebelow=Line("</tbody>\n</table>", "", "", ""),
headerrow=partial(_html_row_with_attrs, "th", False),
datarow=partial(_html_row_with_attrs, "td", False),
padding=0,
with_header_hide=["lineabove"],
),
"unsafehtml": TableFormat(
lineabove=_html_begin_table_without_header,
linebelowheader="",
linebetweenrows=None,
linebelow=Line("</tbody>\n</table>", "", "", ""),
headerrow=partial(_html_row_with_attrs, "th", True),
datarow=partial(_html_row_with_attrs, "td", True),
padding=0,
with_header_hide=["lineabove"],
),
"latex": TableFormat(
lineabove=_latex_line_begin_tabular,
linebelowheader=Line("\\hline", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\hline\n\\end{tabular}", "", "", ""),
headerrow=_latex_row,
datarow=_latex_row,
padding=1,
with_header_hide=None,
),
"latex_raw": TableFormat(
lineabove=_latex_line_begin_tabular,
linebelowheader=Line("\\hline", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\hline\n\\end{tabular}", "", "", ""),
headerrow=partial(_latex_row, escrules={}),
datarow=partial(_latex_row, escrules={}),
padding=1,
with_header_hide=None,
),
"latex_booktabs": TableFormat(
lineabove=partial(_latex_line_begin_tabular, booktabs=True),
linebelowheader=Line("\\midrule", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\bottomrule\n\\end{tabular}", "", "", ""),
headerrow=_latex_row,
datarow=_latex_row,
padding=1,
with_header_hide=None,
),
"latex_longtable": TableFormat(
lineabove=partial(_latex_line_begin_tabular, longtable=True),
linebelowheader=Line("\\hline\n\\endhead", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\hline\n\\end{longtable}", "", "", ""),
headerrow=_latex_row,
datarow=_latex_row,
padding=1,
with_header_hide=None,
),
"tsv": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("", "\t", ""),
datarow=DataRow("", "\t", ""),
padding=0,
with_header_hide=None,
),
"textile": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|_. ", "|_.", "|"),
datarow=_textile_row_with_attrs,
padding=1,
with_header_hide=None,
),
}
tabulate_formats = list(sorted(_table_formats.keys()))
# The table formats for which multiline cells will be folded into subsequent
# table rows. The key is the original format specified at the API. The value is
# the format that will be used to represent the original format.
multiline_formats = {
"plain": "plain",
"simple": "simple",
"grid": "grid",
"simple_grid": "simple_grid",
"rounded_grid": "rounded_grid",
"double_grid": "double_grid",
"fancy_grid": "fancy_grid",
"pipe": "pipe",
"orgtbl": "orgtbl",
"jira": "jira",
"presto": "presto",
"pretty": "pretty",
"psql": "psql",
"rst": "rst",
}
# TODO: Add multiline support for the remaining table formats:
# - mediawiki: Replace \n with <br>
# - moinmoin: TBD
# - youtrack: TBD
# - html: Replace \n with <br>
# - latex*: Use "makecell" package: In header, replace X\nY with
# \thead{X\\Y} and in data row, replace X\nY with \makecell{X\\Y}
# - tsv: TBD
# - textile: Replace \n with <br/> (must be well-formed XML)
_multiline_codes = re.compile(r"\r|\n|\r\n")
_multiline_codes_bytes = re.compile(b"\r|\n|\r\n")
_invisible_codes = re.compile(
r"\x1b\[\d+[;\d]*m|\x1b\[\d*\;\d*\;\d*m|\x1b\]8;;(.*?)\x1b\\"
) # ANSI color codes
_invisible_codes_bytes = re.compile(
b"\x1b\\[\\d+\\[;\\d]*m|\x1b\\[\\d*;\\d*;\\d*m|\\x1b\\]8;;(.*?)\\x1b\\\\"
) # ANSI color codes
_invisible_codes_link = re.compile(
r"\x1B]8;[a-zA-Z0-9:]*;[^\x1B]+\x1B\\([^\x1b]+)\x1B]8;;\x1B\\"
) # Terminal hyperlinks
_ansi_color_reset_code = "\033[0m"
_float_with_thousands_separators = re.compile(
r"^(([+-]?[0-9]{1,3})(?:,([0-9]{3}))*)?(?(1)\.[0-9]*|\.[0-9]+)?$"
)
def simple_separated_format(separator):
"""Construct a simple TableFormat with columns separated by a separator.
>>> tsv = simple_separated_format("\\t") ; \
tabulate([["foo", 1], ["spam", 23]], tablefmt=tsv) == 'foo \\t 1\\nspam\\t23'
True
"""
return TableFormat(
None,
None,
None,
None,
headerrow=DataRow("", separator, ""),
datarow=DataRow("", separator, ""),
padding=0,
with_header_hide=None,
)
def _isnumber_with_thousands_separator(string):
"""
>>> _isnumber_with_thousands_separator(".")
False
>>> _isnumber_with_thousands_separator("1")
True
>>> _isnumber_with_thousands_separator("1.")
True
>>> _isnumber_with_thousands_separator(".1")
True
>>> _isnumber_with_thousands_separator("1000")
False
>>> _isnumber_with_thousands_separator("1,000")
True
>>> _isnumber_with_thousands_separator("1,0000")
False
>>> _isnumber_with_thousands_separator("1,000.1234")
True
>>> _isnumber_with_thousands_separator(b"1,000.1234")
True
>>> _isnumber_with_thousands_separator("+1,000.1234")
True
>>> _isnumber_with_thousands_separator("-1,000.1234")
True
"""
try:
string = string.decode()
except (UnicodeDecodeError, AttributeError):
pass
return bool(re.match(_float_with_thousands_separators, string))
def _isconvertible(conv, string):
try:
conv(string)
return True
except (ValueError, TypeError):
return False
def _isnumber(string):
"""
>>> _isnumber("123.45")
True
>>> _isnumber("123")
True
>>> _isnumber("spam")
False
>>> _isnumber("123e45678")
False
>>> _isnumber("inf")
True
"""
if not _isconvertible(float, string):
return False
elif isinstance(string, (str, bytes)) and (
math.isinf(float(string)) or math.isnan(float(string))
):
return string.lower() in ["inf", "-inf", "nan"]
return True
def _isint(string, inttype=int):
"""
>>> _isint("123")
True
>>> _isint("123.45")
False
"""
return (
type(string) is inttype
or isinstance(string, (bytes, str))
and _isconvertible(inttype, string)
)
def _isbool(string):
"""
>>> _isbool(True)
True
>>> _isbool("False")
True
>>> _isbool(1)
False
"""
return type(string) is bool or (
isinstance(string, (bytes, str)) and string in ("True", "False")
)
def _type(string, has_invisible=True, numparse=True):
"""The least generic type (type(None), int, float, str, unicode).
>>> _type(None) is type(None)
True
>>> _type("foo") is type("")
True
>>> _type("1") is type(1)
True
>>> _type('\x1b[31m42\x1b[0m') is type(42)
True
>>> _type('\x1b[31m42\x1b[0m') is type(42)
True
"""
if has_invisible and isinstance(string, (str, bytes)):
string = _strip_invisible(string)
if string is None:
return type(None)
elif hasattr(string, "isoformat"): # datetime.datetime, date, and time
return str
elif _isbool(string):
return bool
elif _isint(string) and numparse:
return int
elif _isnumber(string) and numparse:
return float
elif isinstance(string, bytes):
return bytes
else:
return str
def _afterpoint(string):
"""Symbols after a decimal point, -1 if the string lacks the decimal point.
>>> _afterpoint("123.45")
2
>>> _afterpoint("1001")
-1
>>> _afterpoint("eggs")
-1
>>> _afterpoint("123e45")
2
>>> _afterpoint("123,456.78")
2
"""
if _isnumber(string) or _isnumber_with_thousands_separator(string):
if _isint(string):
return -1
else:
pos = string.rfind(".")
pos = string.lower().rfind("e") if pos < 0 else pos
if pos >= 0:
return len(string) - pos - 1
else:
return -1 # no point
else:
return -1 # not a number
def _padleft(width, s):
"""Flush right.
>>> _padleft(6, '\u044f\u0439\u0446\u0430') == ' \u044f\u0439\u0446\u0430'
True
"""
fmt = "{0:>%ds}" % width
return fmt.format(s)
def _padright(width, s):
"""Flush left.
>>> _padright(6, '\u044f\u0439\u0446\u0430') == '\u044f\u0439\u0446\u0430 '
True
"""
fmt = "{0:<%ds}" % width
return fmt.format(s)
def _padboth(width, s):
"""Center string.
>>> _padboth(6, '\u044f\u0439\u0446\u0430') == ' \u044f\u0439\u0446\u0430 '
True
"""
fmt = "{0:^%ds}" % width
return fmt.format(s)
def _padnone(ignore_width, s):
return s
def _strip_invisible(s):
r"""Remove invisible ANSI color codes.
>>> str(_strip_invisible('\x1B]8;;https://example.com\x1B\\This is a link\x1B]8;;\x1B\\'))
'This is a link'
"""
if isinstance(s, str):
links_removed = re.sub(_invisible_codes_link, "\\1", s)
return re.sub(_invisible_codes, "", links_removed)
else: # a bytestring
return re.sub(_invisible_codes_bytes, "", s)
def _visible_width(s):
"""Visible width of a printed string. ANSI color codes are removed.
>>> _visible_width('\x1b[31mhello\x1b[0m'), _visible_width("world")
(5, 5)
"""
# optional wide-character support
if wcwidth is not None and WIDE_CHARS_MODE:
len_fn = wcwidth.wcswidth
else:
len_fn = len
if isinstance(s, (str, bytes)):
return len_fn(_strip_invisible(s))
else:
return len_fn(str(s))
def _is_multiline(s):
if isinstance(s, str):
return bool(re.search(_multiline_codes, s))
else: # a bytestring
return bool(re.search(_multiline_codes_bytes, s))
def _multiline_width(multiline_s, line_width_fn=len):
"""Visible width of a potentially multiline content."""
return max(map(line_width_fn, re.split("[\r\n]", multiline_s)))
def _choose_width_fn(has_invisible, enable_widechars, is_multiline):
"""Return a function to calculate visible cell width."""
if has_invisible:
line_width_fn = _visible_width
elif enable_widechars: # optional wide-character support if available
line_width_fn = wcwidth.wcswidth
else:
line_width_fn = len
if is_multiline:
width_fn = lambda s: _multiline_width(s, line_width_fn) # noqa
else:
width_fn = line_width_fn
return width_fn
def _align_column_choose_padfn(strings, alignment, has_invisible):
if alignment == "right":
if not PRESERVE_WHITESPACE:
strings = [s.strip() for s in strings]
padfn = _padleft
elif alignment == "center":
if not PRESERVE_WHITESPACE:
strings = [s.strip() for s in strings]
padfn = _padboth
elif alignment == "decimal":
if has_invisible:
decimals = [_afterpoint(_strip_invisible(s)) for s in strings]
else:
decimals = [_afterpoint(s) for s in strings]
maxdecimals = max(decimals)
strings = [s + (maxdecimals - decs) * " " for s, decs in zip(strings, decimals)]
padfn = _padleft
elif not alignment:
padfn = _padnone
else:
if not PRESERVE_WHITESPACE:
strings = [s.strip() for s in strings]
padfn = _padright
return strings, padfn
def _align_column_choose_width_fn(has_invisible, enable_widechars, is_multiline):
if has_invisible:
line_width_fn = _visible_width
elif enable_widechars: # optional wide-character support if available
line_width_fn = wcwidth.wcswidth
else:
line_width_fn = len
if is_multiline:
width_fn = lambda s: _align_column_multiline_width(s, line_width_fn) # noqa
else:
width_fn = line_width_fn
return width_fn
def _align_column_multiline_width(multiline_s, line_width_fn=len):
"""Visible width of a potentially multiline content."""
return list(map(line_width_fn, re.split("[\r\n]", multiline_s)))
def _flat_list(nested_list):
ret = []
for item in nested_list:
if isinstance(item, list):
for subitem in item:
ret.append(subitem)
else:
ret.append(item)
return ret
def _align_column(
strings,
alignment,
minwidth=0,
has_invisible=True,
enable_widechars=False,
is_multiline=False,
):
"""[string] -> [padded_string]"""
strings, padfn = _align_column_choose_padfn(strings, alignment, has_invisible)
width_fn = _align_column_choose_width_fn(
has_invisible, enable_widechars, is_multiline
)
s_widths = list(map(width_fn, strings))
maxwidth = max(max(_flat_list(s_widths)), minwidth)
# TODO: refactor column alignment in single-line and multiline modes
if is_multiline:
if not enable_widechars and not has_invisible:
padded_strings = [
"\n".join([padfn(maxwidth, s) for s in ms.splitlines()])
for ms in strings
]
else:
# enable wide-character width corrections
s_lens = [[len(s) for s in re.split("[\r\n]", ms)] for ms in strings]
visible_widths = [
[maxwidth - (w - l) for w, l in zip(mw, ml)]
for mw, ml in zip(s_widths, s_lens)
]
# wcswidth and _visible_width don't count invisible characters;
# padfn doesn't need to apply another correction
padded_strings = [
"\n".join([padfn(w, s) for s, w in zip((ms.splitlines() or ms), mw)])
for ms, mw in zip(strings, visible_widths)
]
else: # single-line cell values
if not enable_widechars and not has_invisible:
padded_strings = [padfn(maxwidth, s) for s in strings]
else:
# enable wide-character width corrections
s_lens = list(map(len, strings))
visible_widths = [maxwidth - (w - l) for w, l in zip(s_widths, s_lens)]
# wcswidth and _visible_width don't count invisible characters;
# padfn doesn't need to apply another correction
padded_strings = [padfn(w, s) for s, w in zip(strings, visible_widths)]
return padded_strings