We currently set up the argv array by hand in a fixed-size
stack-local array. Using an argv array is more readable, as
it handles buffer allocation us (not to mention makes it
obvious we do not overflow the array).
However, there's a more subtle benefit, too. We leave the
function having run start_command (with the child_process
in a static global), and then later run finish_command from
another function. That means when we run finish_command,
neither column_process.argv nor the memory it points to is
valid any longer.
Most of the time finish_command does not bother looking at
argv, but it may if it encounters an error (e.g., waitpid
failure or signal death). This is unusual, which is why
nobody has noticed. But by using run-command's built-in
argv_array, the memory ownership is handled for us
automatically.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
For too complicated output handling, it'd be easier to just spawn
git-column and redirect stdout to it. This patch provides helpers
to do that.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Normally all cells (and in turn columns) share the same width. This
layout mode can waste space because one long item can stretch our all
columns.
With COL_DENSE enabled, column width is calculated indepdendently. All
columns are shrunk to minimum, then it attempts to push cells of the
last row over to the next column with hope that everything still fits
even there's one row less. The process is repeated until the new layout
cannot fit in given width any more, or there's only one row left
(perfect!).
Apparently, this mode consumes more cpu than the old one, but it makes
better use of terminal space. For layouting one or two screens, cpu
usage should not be detectable.
This patch introduces option handling code besides layout modes and
enable/disable to expose this feature as "dense". The feature can be
turned off by specifying "nodense".
Thanks-to: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
COL_COLUMN and COL_ROW fill column by column (or row by row
respectively), given the terminal width and how many space between
columns. All cells have equal width.
Strings are supposed to be in UTF-8. Valid ANSI escape strings are OK.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A column option string consists of many token separated by either
a space or a comma. A token belongs to one of three groups:
- enabling: always, never and auto
- layout mode: currently plain (which does not layout at all)
- other future tuning flags
git-column can be used to pipe output to from a command that wants
column layout, but not to mess with its own output code. Simpler output
code can be changed to use column layout code directly.
Thanks-to: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
