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top: extend command line sort field override provision

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In a effort to anticipate a potential future wishlist,
the recent '-o' sort override command line switch will
now support an override of the sort direction as well.

By prepending a '+' or '-' to any valid field name the
user will be able to guarantee a specific desired sort
direction. The '+' forces a high-to-low (normal) order
while a '-' reverses that to yield a low-to-high sort.

Without this addition users would be left to the mercy
of whatever was last specified for Curwin as reflected
in the rcfile or top's default of a high-to-low order.

(everything is perfectly justified plus right margins)
(are completely filled, but of course it must be luck)

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner 2012-12-20 00:00:00 -06:00 committed by Craig Small
parent 2e7adced74
commit 2304af908c
2 changed files with 5 additions and 0 deletions
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3
top/top.1
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@ -306,6 +306,9 @@ produce before ending.
\-\fBo\fR :\fI Override-sort-field\fR as:\fB\ \ \-o fieldname \fR
Specifies the name of the field on which tasks will be sorted, independent
of what is reflected in the configuration file.
You can prepend a '+' or '\-' to the field name to also override the sort direction.
A leading '+' will force sorting high to low, whereas a '\-' will ensure a low to high
ordering.
This option exists primarily to support automated/scripted batch mode
operation.

2
top/top.c
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@ -3291,6 +3291,8 @@ static void parse_args (char **args) {
if (cp[1]) cp++;
else if (*args) cp = *args++;
else error_exit(fmtmk(N_fmt(MISSING_args_fmt), ch));
if (*cp == '+') { SETw(Curwin, Qsrt_NORMAL); ++cp; }
else if (*cp == '-') { OFFw(Curwin, Qsrt_NORMAL); ++cp; }
for (i = 0; i < P_MAXPFLGS; i++)
if (!STRCMP(cp, N_col(i))) break;
if (i == P_MAXPFLGS)