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Term::Table(3) |
User Contributed Perl Documentation |
Term::Table(3) |
Term::Table - Format a header and rows into a table
This is used by some failing tests to provide diagnostics about what has gone
wrong. This module is able to generic format rows of data into tables.
use Term::Table;
my $table = Term::Table->new(
max_width => 80, # defaults to terminal size
pad => 4, # Extra padding between table and max-width (defaults to 4)
allow_overflow => 0, # default is 0, when off an exception will be thrown if the table is too big
collapse => 1, # do not show empty columns
header => ['name', 'age', 'hair color'],
rows => [
['Fred Flinstone', 2000000, 'black'],
['Wilma Flinstone', 1999995, 'red'],
...
],
);
say $_ for $table->render;
This prints a table like this:
+-----------------+---------+------------+
| name | age | hair color |
+-----------------+---------+------------+
| Fred Flinstone | 2000000 | black |
| Wilma Flinstone | 1999995 | red |
| ... | ... | ... |
+-----------------+---------+------------+
use Term::Table;
my $table = Term::Table->new(...);
- header => [ ... ]
- If you want a header specify it here. This takes an arrayref with each
columns heading.
- rows => [ [...], [...], ... ]
- This should be an arrayref containing an arrayref per row.
- collapse => $bool
- Use this if you want to hide empty columns, that is any column that has no
data in any row. Having a header for the column will not effect
collapse.
- max_width => $num
- Set the maximum width of the table, the table may not be this big, but it
will be no bigger. If none is specified it will attempt to find the width
of your terminal and use that, otherwise it falls back to the terminal
width or 80.
- pad => $num
- Defaults to 4, extra padding for row width calculations. Default is for
legacy support. Set this to 0 to turn padding off.
- allow_overflow => $bool
- Defaults to 0. If this is off then an exception will be thrown if the
table cannot be made to fit inside the max-width. If this is set to 1 then
the table will be rendered anyway, larger than max-width, if it is not
possible to stay within the max-width. In other words this turns max-width
from a hard-limit to a soft recommendation.
- sanitize => $bool
- This will sanitize all the data in the table such that newlines, control
characters, and all whitespace except for ASCII 20 '
' are replaced with escape sequences. This prevents newlines, tabs,
and similar whitespace from disrupting the table.
Note: newlines are marked as '\n', but a newline is
also inserted into the data so that it typically displays in a way that
is useful to humans.
Example:
my $field = "foo\nbar\nbaz\n";
print join "\n" => table(
sanitize => 1,
rows => [
[$field, 'col2' ],
['row2 col1', 'row2 col2']
]
);
Prints:
+-----------------+-----------+
| foo\n | col2 |
| bar\n | |
| baz\n | |
| | |
| row2 col1 | row2 col2 |
+-----------------+-----------+
So it marks the newlines by inserting the escape sequence, but
it also shows the data across as many lines as it would normally
display.
- mark_tail => $bool
- This will replace the last whitespace character of any trailing whitespace
with its escape sequence. This makes it easier to notice trailing
whitespace when comparing values.
- show_header => $bool
- Set this to false to hide the header. This defaults to true if the header
is set, false if no header is provided.
- auto_columns => $bool
- Set this to true to automatically add columns that are not named in the
header. This defaults to false if a header is provided, and defaults to
true when there is no header.
- no_collapse => [ $col_num_a, $col_num_b, ... ]
- no_collapse => [ $col_name_a, $col_name_b, ... ]
- no_collapse => { $col_num_a => 1, $col_num_b => 1, ... }
- no_collapse => { $col_name_a => 1, $col_name_b => 1, ... }
- Specify (by number and/or name) columns that should not be removed when
empty. The 'name' form only works when a header is specified. There is
currently no protection to insure that names you specify are actually in
the header, invalid names are ignored, patches to fix this will be happily
accepted.
Some unicode characters, such as "婧"
("U+5A67") are wider than others. These will
render just fine if you "use utf8;" as
necessary, and Unicode::GCString is installed, however if the module is not
installed there will be anomalies in the table:
+-----+-----+---+
| a | b | c |
+-----+-----+---+
| 婧 | x | y |
| x | y | z |
| x | 婧 | z |
+-----+-----+---+
The source code repository for Term-Table can be found at
http://github.com/exodist/Term-Table/.
- Chad Granum <exodist@cpan.org>
- Chad Granum <exodist@cpan.org>
Copyright 2016 Chad Granum <exodist@cpan.org>.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
See http://dev.perl.org/licenses/
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