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Diffstat (limited to 'cli_helpers/tabular_output/tabulate_adapter.py')
| -rw-r--r-- | cli_helpers/tabular_output/tabulate_adapter.py | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/cli_helpers/tabular_output/tabulate_adapter.py b/cli_helpers/tabular_output/tabulate_adapter.py new file mode 100644 index 0000000..2c557f8 --- /dev/null +++ b/cli_helpers/tabular_output/tabulate_adapter.py @@ -0,0 +1,212 @@ +# -*- coding: utf-8 -*- +"""Format adapter for the tabulate module.""" + +from __future__ import unicode_literals + +from cli_helpers.utils import filter_dict_by_key +from cli_helpers.compat import Terminal256Formatter, Token, StringIO +from .preprocessors import ( + convert_to_string, + truncate_string, + override_missing_value, + style_output, + HAS_PYGMENTS, + escape_newlines, +) + +import tabulate + + +tabulate.MIN_PADDING = 0 + +tabulate._table_formats["psql_unicode"] = tabulate.TableFormat( + lineabove=tabulate.Line("┌", "─", "┬", "┐"), + linebelowheader=tabulate.Line("├", "─", "┼", "┤"), + linebetweenrows=None, + linebelow=tabulate.Line("└", "─", "┴", "┘"), + headerrow=tabulate.DataRow("│", "│", "│"), + datarow=tabulate.DataRow("│", "│", "│"), + padding=1, + with_header_hide=None, +) + +tabulate._table_formats["double"] = tabulate.TableFormat( + lineabove=tabulate.Line("╔", "═", "╦", "╗"), + linebelowheader=tabulate.Line("╠", "═", "╬", "╣"), + linebetweenrows=None, + linebelow=tabulate.Line("╚", "═", "╩", "╝"), + headerrow=tabulate.DataRow("║", "║", "║"), + datarow=tabulate.DataRow("║", "║", "║"), + padding=1, + with_header_hide=None, +) + +tabulate._table_formats["ascii"] = tabulate.TableFormat( + lineabove=tabulate.Line("+", "-", "+", "+"), + linebelowheader=tabulate.Line("+", "-", "+", "+"), + linebetweenrows=None, + linebelow=tabulate.Line("+", "-", "+", "+"), + headerrow=tabulate.DataRow("|", "|", "|"), + datarow=tabulate.DataRow("|", "|", "|"), + padding=1, + with_header_hide=None, +) + +tabulate._table_formats["ascii_escaped"] = tabulate.TableFormat( + lineabove=tabulate.Line("+", "-", "+", "+"), + linebelowheader=tabulate.Line("+", "-", "+", "+"), + linebetweenrows=None, + linebelow=tabulate.Line("+", "-", "+", "+"), + headerrow=tabulate.DataRow("|", "|", "|"), + datarow=tabulate.DataRow("|", "|", "|"), + padding=1, + with_header_hide=None, +) + +# "minimal" is the same as "plain", but without headers +tabulate._table_formats["minimal"] = tabulate._table_formats["plain"] + +tabulate.multiline_formats["psql_unicode"] = "psql_unicode" +tabulate.multiline_formats["double"] = "double" +tabulate.multiline_formats["ascii"] = "ascii" +tabulate.multiline_formats["minimal"] = "minimal" + +supported_markup_formats = ( + "mediawiki", + "html", + "latex", + "latex_booktabs", + "textile", + "moinmoin", + "jira", +) +supported_table_formats = ( + "ascii", + "ascii_escaped", + "plain", + "simple", + "minimal", + "grid", + "fancy_grid", + "pipe", + "orgtbl", + "psql", + "psql_unicode", + "rst", + "github", + "double", +) + +supported_formats = supported_markup_formats + supported_table_formats + +default_kwargs = { + "ascii": {"numalign": "left"}, + "ascii_escaped": {"numalign": "left"}, +} +headless_formats = ("minimal",) + + +def get_preprocessors(format_name): + common_formatters = ( + override_missing_value, + convert_to_string, + truncate_string, + style_output, + ) + + if tabulate.multiline_formats.get(format_name): + return common_formatters + (style_output_table(format_name),) + else: + return common_formatters + (escape_newlines, style_output_table(format_name)) + + +def style_output_table(format_name=""): + def style_output( + data, + headers, + style=None, + table_separator_token=Token.Output.TableSeparator, + **_, + ): + """Style the *table* a(e.g. bold, italic, and colors) + + .. NOTE:: + This requires the `Pygments <http://pygments.org/>`_ library to + be installed. You can install it with CLI Helpers as an extra:: + $ pip install cli_helpers[styles] + + Example usage:: + + from cli_helpers.tabular_output import tabulate_adapter + from pygments.style import Style + from pygments.token import Token + + class YourStyle(Style): + default_style = "" + styles = { + Token.Output.TableSeparator: '#ansigray' + } + + headers = ('First Name', 'Last Name') + data = [['Fred', 'Roberts'], ['George', 'Smith']] + style_output_table = tabulate_adapter.style_output_table('psql') + style_output_table(data, headers, style=CliStyle) + + data, headers = style_output(data, headers, style=YourStyle) + output = tabulate_adapter.adapter(data, headers, style=YourStyle) + + :param iterable data: An :term:`iterable` (e.g. list) of rows. + :param iterable headers: The column headers. + :param str/pygments.style.Style style: A Pygments style. You can `create + your own styles <https://pygments.org/docs/styles#creating-own-styles>`_. + :param str table_separator_token: The token type to be used for the table separator. + :return: data and headers. + :rtype: tuple + + """ + if style and HAS_PYGMENTS and format_name in supported_table_formats: + formatter = Terminal256Formatter(style=style) + + def style_field(token, field): + """Get the styled text for a *field* using *token* type.""" + s = StringIO() + formatter.format(((token, field),), s) + return s.getvalue() + + def addColorInElt(elt): + if not elt: + return elt + if elt.__class__ == tabulate.Line: + return tabulate.Line( + *(style_field(table_separator_token, val) for val in elt) + ) + if elt.__class__ == tabulate.DataRow: + return tabulate.DataRow( + *(style_field(table_separator_token, val) for val in elt) + ) + return elt + + srcfmt = tabulate._table_formats[format_name] + newfmt = tabulate.TableFormat(*(addColorInElt(val) for val in srcfmt)) + tabulate._table_formats[format_name] = newfmt + + return iter(data), headers + + return style_output + + +def adapter(data, headers, table_format=None, preserve_whitespace=False, **kwargs): + """Wrap tabulate inside a function for TabularOutputFormatter.""" + keys = ("floatfmt", "numalign", "stralign", "showindex", "disable_numparse") + tkwargs = {"tablefmt": table_format} + tkwargs.update(filter_dict_by_key(kwargs, keys)) + + if table_format in supported_markup_formats: + tkwargs.update(numalign=None, stralign=None) + + tabulate.PRESERVE_WHITESPACE = preserve_whitespace + + tkwargs.update(default_kwargs.get(table_format, {})) + if table_format in headless_formats: + headers = [] + return iter(tabulate.tabulate(data, headers, **tkwargs).split("\n")) |