SVK::Log::Filter::Head(3) User Contributed Perl Documentation SVK::Log::Filter::Head(3)SYNOPSIS
SVK::Log::Filter::Head - pass the first N revisions
DESCRIPTION
The Head filter requires a single integer as its argument. The integer represents the number of revisions that the filter should allow to
pass down the filter pipeline. Head only counts revisions that it sees, so if an upstream filter causes the pipeline to skip a revision,
Head won't (and can't) count it. As soon as Head has seen the specified number of revisions, it stops the pipeline from processing any
further revisions.
This filter is particularly useful when searching log messages for patterns (see SVK::Log::Filter::Grep). For example, to view the first
three revisions with messages that match "foo", one might use
svk log --filter "grep foo | head 3"
STASH /PROPERTY MODIFICATIONS
Head leaves all properties and the stash intact.
perl v5.10.0 2008-08-04 SVK::Log::Filter::Head(3)
Check Out this Related Man Page
SVK::Command::Log(3) User Contributed Perl Documentation SVK::Command::Log(3)NAME
SVK::Command::Log - Show log messages for revisions
SYNOPSIS
log DEPOTPATH
log PATH
log -r N[:M] [DEPOT]PATH
OPTIONS -r [--revision] ARG : ARG (some commands also take ARG1:ARG2 range)
A revision argument can be one of:
"HEAD" latest in repository
{DATE} revision at start of the date
NUMBER revision number
NUMBER@ interpret as remote revision number
NUM1:NUM2 revision range
Unlike other commands, negative NUMBER has no
meaning.
-l [--limit] REV : stop after displaying REV revisions
-q [--quiet] : Don't display the actual log message itself
-x [--cross] : track revisions copied from elsewhere
-v [--verbose] : print extra information
--xml : display the log messages in XML format
--filter FILTER : select revisions based on FILTER
--output FILTER : display logs using the given FILTER
DESCRIPTION
Display the log messages and other meta-data associated with revisions.
SVK provides a flexible system allowing log messages and other revision properties to be displayed and processed in many ways. This
flexibility comes through the use of "log filters." Log filters are of two types: selection and output. Selection filters determine which
revisions are included in the output, while output filters determine how the information about those revisions is displayed. Here's a
simple example. These two invocations produce equivalent output:
svk log -l 5 //local/project
svk log --filter "head 5" --output std //local/project
The "head" filter chooses only the first revisions that it encounters, in this case, the first 5 revisions. The "std" filter displays the
revisions using SVK's default output format.
Selection filters can be connected together into pipelines. For example, to see the first 3 revisions with log messages containing the
string 'needle', we might do this
svk log --filter "grep needle | head 3" //local/project
That example introduced the "grep" filter. The argument for the grep filter is a valid Perl pattern (with any '|' characters as '|' and
'' as '\'). A revision is allowed to continue to the next stage of the pipeline if the revision's log message matches the pattern. If
we wanted to search only the first 10 revisions for 'needle' we could use either of the following commands
svk log --filter "head 10 | grep needle" //local/project
svk log -l 10 --filter "grep needle" //local/project
You may change SVK's default output filter by setting the SVKLOGOUTPUT environment. See svk help environment for details.
Standard Filters
The following log filters are included with the standard SVK distribution:
Selection : grep, head, author
Output : std, xml
For detailed documentation about any of these filters, try "perldoc SVK::Log::Filter::Name" where "Name" is "Grep", "Head", "XML", etc..
Other log filters are available from CPAN <http://search.cpan.org> by searching for "SVK::Log::Filter". For details on writing log
filters, see the documentation for the SVK::Log::Filter module.
perl v5.10.0 2008-08-04 SVK::Command::Log(3)