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https://git.savannah.gnu.org/git/parallel.git
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--trim implemented. Unittest passes
This commit is contained in:
Ole Tange
parent
5fea6dfd98
commit
0d1c249a1a
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@ -1,4 +1,17 @@
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Unittest: parallel --trim fj ::: echo
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Unittest: ending in space continuted on next line. Both needs quoting only once.
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(echo '> '; echo '> '; echo '>') | parallel --max-lines 3 echo
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example with colsep
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--colsep should default to remove whitespace before and after
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--donttrim --keepwhitespace
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Unittest: eof string on :::
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Unittest: quoting efter colsplit
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echo '>/dev/null' | parallel echo
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echo 'a%c%b' | parallel --colsep % echo {1} {3} {2}
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(echo 'a%c%b'; echo a%c%b%d) | parallel --colsep % echo {1} {3} {2} {4}
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@ -9,6 +22,20 @@ parallel --colsep % echo {1} {3} {2} ::: a%c%b
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parallel --colsep % echo {1} {3} {2} {4} ::: a%c%b a%c%b%d
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(echo 'a%c%%b'; echo a%c%b%d) | parallel -k --colsep %+ echo {1} {3} {2} {4}
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parallel -k --colsep %+ echo {1} {3} {2} {4} ::: a%c%%b a%c%b%d
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(echo 'a% c %%b'; echo a%c% b %d) | parallel -k --colsep %+ echo {1} {3} {2} {4}
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(echo 'a% c %%b'; echo a%c% b %d) | parallel -k --colsep %+ echo '"{1}_{3}_{2}_{4}"'
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(echo 'a% c %%b'; echo a%c% b %d) | parallel -k -C %+ echo '"{1}_{3}_{2}_{4}"'
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(echo 'a% c %%b'; echo a%c% b %d) | parallel -k --trim n --colsep %+ echo '"{1}_{3}_{2}_{4}"'
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parallel -k -C %+ echo '"{1}_{3}_{2}_{4}"' ::: 'a% c %%b' 'a%c% b %d'
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Better screenshot on http://freshmeat.net/projects/parallel
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Better examples.
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Size: 640x480
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Import sql
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167
src/parallel
167
src/parallel
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@ -53,7 +53,7 @@ http://tinyogg.com/watch/TORaR/ and http://tinyogg.com/watch/hfxKj/
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Command to execute. If I<command> or the following arguments contain
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{} every instance will be substituted with the input line. Setting a
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command also invokes B<-f>.
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command also invokes B<--file>.
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If I<command> is given, GNU B<parallel> will behave similar to B<xargs>. If
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I<command> is not given GNU B<parallel> will behave similar to B<cat | sh>.
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@ -202,16 +202,30 @@ removed on the remote server. Directories created will not be removed
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B<--cleanup> is ignored when not used with B<--transfer> or B<--return>.
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=item B<--colsep> I<regexp> (beta testing)
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=item B<-C> I<regexp> (beta testing)
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Column separator. The input will be treated as a table with I<regexp>
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separating the columns. The n'th column can be access using
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B<{>I<n>B<}> or B<{>I<n>.B<}>. E.g. B<{3}> is the 3rd column.
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B<--colsep> implies B<--trim rl>.
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I<regexp> is a Perl Regular Expression:
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http://perldoc.perl.org/perlre.html
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=item B<--command>
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=item B<-c>
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=item B<-c> (Use B<--command> as B<-c> may be removed in later versions)
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Line is a command. The input line contains more than one argument or
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the input line needs to be evaluated by the shell. This is the default
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if I<command> is not set. Can be reversed with B<-f>.
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if I<command> is not set. Can be reversed with B<--file>.
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Most people will never need this because GNU B<parallel> normally
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selects the correct B<-f> or B<-c>.
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selects the correct B<--file> or B<--command>.
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=item B<--delimiter> I<delim>
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@ -256,14 +270,14 @@ Implies B<--progress>.
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=item B<--file>
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=item B<-f>
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=item B<-f> (Use B<--file> as B<-f> may be removed in later versions)
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Line is a filename. The input line contains a filename that will be
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quoted so it is not evaluated by the shell. This is the default if
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I<command> is set. Can be reversed with B<-c>.
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I<command> is set. Can be reversed with B<--command>.
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Most people will never need this because GNU B<parallel> normally
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selects the correct B<-f> or B<-c>.
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selects the correct B<--file> or B<--command>.
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=item B<--group>
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@ -409,6 +423,20 @@ run remote and are very fast to run. This is disabled for sshlogins
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that specify their own ssh command.
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=item B<--xargs>
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=item B<-m>
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Multiple. Insert as many arguments as the command line length
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permits. If B<{}> is not used the arguments will be appended to the
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line. If B<{}> is used multiple times each B<{}> will be replaced
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with all the arguments.
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Support for B<-m> with B<--sshlogin> is limited and may fail.
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See also B<-X> for context replace.
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=item B<--progress>
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Show progress of computations. List the computers involved in the task
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@ -655,6 +683,34 @@ Transfer, Return, Cleanup. Short hand for:
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B<--transfer> B<--return> I<filename> B<--cleanup>
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=item B<--trim> <n|l|r|lr|rl> (unimplemented)
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Trim white space in input.
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=over 4
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=item n
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No trim. Input is not modified. This is the default.
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=item l
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Left trim. Remove white space from start of input. E.g. " a bc " -> "a bc ".
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=item r
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Right trim. Remove white space from end of input. E.g. " a bc " -> " a bc".
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=item lr
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=item rl
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Both trim. Remove white space from both start and end of input. E.g. "
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a bc " -> "a bc". This is the default if B<--colsep> is used.
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=back
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=item B<--ungroup>
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=item B<-u>
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@ -696,18 +752,6 @@ B<--silent>. See also B<-t>.
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Print the version GNU B<parallel> and exit.
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=item B<--xargs>
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=item B<-m>
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Multiple. Insert as many arguments as the command line length
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permits. If B<{}> is not used the arguments will be appended to the
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line. If B<{}> is used multiple times each B<{}> will be replaced
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with all the arguments.
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Support for B<-m> with B<--sshlogin> is limited and may fail.
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=item B<-X>
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xargs with context replace. This works like B<-m> except if B<{}> is part
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@ -1136,8 +1180,8 @@ To run 100 processes simultaneously do:
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B<parallel -j 100 < jobs_to_run>
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As there is not a I<command> the option B<-c> is default because the
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jobs needs to be evaluated by the shell.
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As there is not a I<command> the option B<--command> is default
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because the jobs needs to be evaluated by the shell.
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=head1 QUOTING
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@ -1861,6 +1905,7 @@ sub parse_options {
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$Global::total_jobs = 0;
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$Global::arg_sep = ":::";
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$Global::arg_file_sep = "::::";
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$Global::trim = 'n';
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Getopt::Long::Configure ("bundling","require_order");
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# Add options from .parallelrc
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@ -1908,6 +1953,7 @@ sub parse_options {
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"eta" => \$::opt_eta,
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"arg-sep|argsep=s" => \$::opt_arg_sep,
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"arg-file-sep|argfilesep=s" => \$::opt_arg_file_sep,
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"trim=s" => \$::opt_trim,
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# xargs-compatibility - implemented, man, unittest
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"max-procs|P=s" => \$::opt_P,
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"delimiter|d=s" => \$::opt_d,
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@ -1919,7 +1965,7 @@ sub parse_options {
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"eof|e:s" => \$::opt_E,
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"max-args|n=i" => \$::opt_n,
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"max-replace-args|N=i" => \$::opt_N,
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"colsep|col-sep=s" => \$::opt_colsep,
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"colsep|col-sep|C=s" => \$::opt_colsep,
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"help|h" => \$::opt_help,
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"L=i" => \$::opt_L,
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"max-lines|l:i" => \$::opt_l,
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@ -1949,13 +1995,11 @@ sub parse_options {
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if(defined $::opt_U) { $Global::replace_no_ext = $::opt_U; }
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if(defined $::opt_i and $::opt_i) { $Global::replacestring = $::opt_i; }
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if(defined $::opt_E and $::opt_E) { $Global::end_of_file_string = $::opt_E; }
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if(defined $::opt_L and $::opt_L or defined $::opt_l) {
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$Global::max_lines = $::opt_l || $::opt_L || 1;
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$Global::max_number_of_args = $Global::max_lines;
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}
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if(defined $::opt_n and $::opt_n) { $Global::max_number_of_args = $::opt_n; }
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if(defined $::opt_N and $::opt_N) { $Global::max_number_of_args = $::opt_N; }
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if(defined $::opt_help) { die_usage(); }
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if(defined $::opt_colsep) { $Global::trim = 'lr'; }
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if(defined $::opt_trim) { $Global::trim = $::opt_trim; }
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if(defined $::opt_arg_sep) { $Global::arg_sep = $::opt_arg_sep; }
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if(defined $::opt_arg_file_sep) { $Global::arg_file_sep = $::opt_arg_file_sep; }
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if(defined $::opt_number_of_cpus) { print no_of_cpus(),"\n"; wait_and_exit(0); }
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@ -1971,6 +2015,10 @@ sub parse_options {
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$::opt_transfer = 1;
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$::opt_cleanup = 1;
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}
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if(defined $::opt_L and $::opt_L or defined $::opt_l) {
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$Global::max_lines = $::opt_l || $::opt_L || 1;
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$Global::max_number_of_args ||= $Global::max_lines;
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}
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if(grep /^$Global::arg_sep$/o, @ARGV) {
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@ARGV=read_args_from_command_line();
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@ -2119,6 +2167,9 @@ sub argfiles_xapply_style {
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for (my $lineno=0; $lineno <= $max_lineno; $lineno++) {
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for (my $fileno = 0; $fileno <= $#::opt_a; $fileno++) {
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my $arg = $content[$fileno][$lineno];
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if($Global::trim ne 'n') {
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$arg = trim($arg);
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}
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if(defined $arg) {
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unget_arg($arg);
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} else {
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@ -2350,6 +2401,32 @@ sub xargs_computations {
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}
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sub trim {
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# Removes white space as specifed by --trim:
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# n = nothing
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# l = start
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# r = end
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# lr|rl = both
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# Returns:
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# string with white space removed as needed
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my (@strings) = (@_);
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my $arg;
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if($Global::trim eq "n") {
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# skip
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} elsif($Global::trim eq "l") {
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for $arg (@strings) { $arg =~ s/^\s+//; }
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} elsif($Global::trim eq "r") {
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for $arg (@strings) { $arg =~ s/\s+$//; }
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} elsif($Global::trim eq "rl" or $Global::trim eq "lr") {
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for $arg (@strings) { $arg =~ s/^\s+//; $arg =~ s/\s+$//; }
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} else {
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print STDERR "$Global::progname: --trim must be one of: r l rl lr\n";
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wait_and_exit(255);
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}
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return wantarray ? @strings : "@strings";
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}
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sub shell_quote {
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# Quote the string so shell will not expand any special chars
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# Returns:
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@ -2933,6 +3010,14 @@ sub max {
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# $Global::total_completed = total jobs completed
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# @Global::unget_arg = arguments quoted as needed ready to use
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# @Global::unget_lines = raw argument lines - needs quoting and splitting
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#
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# Flow:
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# Get_line: Line is read from file or stdin. Delimiter is chopped
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# Get_line_argv: Line is read from ARGV - no delimiter
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# Get column: Multiple -a or --colsep
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# Get column: @ARGV
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# Quote column:
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# get_quoted_args
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sub init_run_jobs {
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# Remember the original STDOUT and STDERR
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@ -3026,23 +3111,27 @@ sub get_next_arg_from_fh {
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# next argument from file handle - quoted if needed
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# undef if end of file
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my $fh = shift;
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my $arg;
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if(not $Private::unget{$fh}) {
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@{$Private::unget{$fh}} = ();
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}
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my $unget_ref = $Private::unget{$fh};
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if(@$unget_ref) {
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return shift @$unget_ref;
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}
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# Ungotten arg exists
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$arg = shift @$unget_ref;
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} else {
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if(not more_arguments($fh)) {
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return undef;
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}
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my $arg = <$fh>;
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$arg = <$fh>;
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# Remove delimiter
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$arg =~ s:$/$::;
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}
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if($Global::end_of_file_string and
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$arg eq $Global::end_of_file_string) {
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# Ignore the rest of input file
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while (<$fh>) {}
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@$unget_ref = ();
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return undef;
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}
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if($Global::ignore_empty) {
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@ -3058,7 +3147,11 @@ sub get_next_arg_from_fh {
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}
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if($::opt_colsep) {
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# split this into columns
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if($Global::trim ne 'n') {
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push @$unget_ref, split /$::opt_colsep/o, $arg;
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} else {
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push @$unget_ref, trim(split /$::opt_colsep/o, $arg);
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}
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$::opt_N = $#$unget_ref+1;
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$Global::max_number_of_args = $::opt_N;
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$arg = shift @$unget_ref;
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@ -3071,11 +3164,11 @@ sub get_next_arg_from_fh {
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sub get_next_arg {
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# Returns:
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# next argument from input
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# next argument from input quoted and trimmed as needed
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# undef if end of file
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my $arg;
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if(@Global::unget_arg) {
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$arg = shift @Global::unget_arg;
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return shift @Global::unget_arg;
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} elsif(@Global::unget_lines) {
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$arg = shift @Global::unget_lines;
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if($Global::end_of_file_string and
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@ -3100,13 +3193,19 @@ sub get_next_arg {
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my @columns = split /$::opt_colsep/o, $arg;
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$::opt_N = $#columns+1;
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$Global::max_number_of_args = $::opt_N;
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if($Global::trim ne 'n') {
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@columns = trim(@columns);
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}
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if($Global::input_is_filename) {
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unget_arg(shell_quote(@columns));
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} else {
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unget_arg(@columns);
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}
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$arg = get_next_arg();
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return get_next_arg();
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} else {
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if($Global::trim ne 'n') {
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$arg = trim($arg);
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}
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if($Global::input_is_filename) {
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$arg = shell_quote($arg);
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}
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@ -3859,11 +3958,11 @@ sub usage {
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sub version {
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# Returns: N/A
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print join("\n",
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"$Global::progname $Global::version",
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"GNU $Global::progname $Global::version",
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"Copyright (C) 2007,2008,2009,2010 Ole Tange and Free Software Foundation, Inc.",
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"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>",
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"This is free software: you are free to change and redistribute it.",
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"$Global::progname comes with no warranty.",
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"GNU $Global::progname comes with no warranty.",
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"",
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"Web site: http://www.gnu.org/software/${Global::progname}\n"
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);
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