| Filename | /usr/share/perl/5.20/Text/Abbrev.pm |
| Statements | Executed 126 statements in 115µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 2 | 1 | 1 | 80µs | 80µs | Text::Abbrev::abbrev |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | package Text::Abbrev; | ||||
| 2 | 1 | 14µs | require 5.005; # Probably works on earlier versions too. | ||
| 3 | 1 | 900ns | require Exporter; | ||
| 4 | |||||
| 5 | 1 | 400ns | our $VERSION = '1.02'; | ||
| 6 | |||||
| 7 | =head1 NAME | ||||
| 8 | |||||
| 9 | Text::Abbrev - abbrev - create an abbreviation table from a list | ||||
| 10 | |||||
| 11 | =head1 SYNOPSIS | ||||
| 12 | |||||
| 13 | use Text::Abbrev; | ||||
| 14 | abbrev $hashref, LIST | ||||
| 15 | |||||
| 16 | |||||
| 17 | =head1 DESCRIPTION | ||||
| 18 | |||||
| 19 | Stores all unambiguous truncations of each element of LIST | ||||
| 20 | as keys in the associative array referenced by C<$hashref>. | ||||
| 21 | The values are the original list elements. | ||||
| 22 | |||||
| 23 | =head1 EXAMPLE | ||||
| 24 | |||||
| 25 | $hashref = abbrev qw(list edit send abort gripe); | ||||
| 26 | |||||
| 27 | %hash = abbrev qw(list edit send abort gripe); | ||||
| 28 | |||||
| 29 | abbrev $hashref, qw(list edit send abort gripe); | ||||
| 30 | |||||
| 31 | abbrev(*hash, qw(list edit send abort gripe)); | ||||
| 32 | |||||
| 33 | =cut | ||||
| 34 | |||||
| 35 | 1 | 8µs | @ISA = qw(Exporter); | ||
| 36 | 1 | 500ns | @EXPORT = qw(abbrev); | ||
| 37 | |||||
| 38 | # Usage: | ||||
| 39 | # abbrev \%foo, LIST; | ||||
| 40 | # ... | ||||
| 41 | # $long = $foo{$short}; | ||||
| 42 | |||||
| 43 | # spent 80µs within Text::Abbrev::abbrev which was called 2 times, avg 40µs/call:
# 2 times (80µs+0s) by CGI::Session::parse_dsn at line 149 of CGI/Session.pm, avg 40µs/call | ||||
| 44 | 2 | 500ns | my ($word, $hashref, $glob, %table, $returnvoid); | ||
| 45 | |||||
| 46 | 2 | 600ns | @_ or return; # So we don't autovivify onto @_ and trigger warning | ||
| 47 | 2 | 2µs | if (ref($_[0])) { # hash reference preferably | ||
| 48 | $hashref = shift; | ||||
| 49 | $returnvoid = 1; | ||||
| 50 | } elsif (ref \$_[0] eq 'GLOB') { # is actually a glob (deprecated) | ||||
| 51 | $hashref = \%{shift()}; | ||||
| 52 | $returnvoid = 1; | ||||
| 53 | } | ||||
| 54 | 2 | 2µs | %{$hashref} = (); | ||
| 55 | |||||
| 56 | 2 | 2µs | WORD: foreach $word (@_) { | ||
| 57 | 6 | 13µs | for (my $len = (length $word) - 1; $len > 0; --$len) { | ||
| 58 | 30 | 8µs | my $abbrev = substr($word,0,$len); | ||
| 59 | 30 | 24µs | my $seen = ++$table{$abbrev}; | ||
| 60 | 30 | 13µs | if ($seen == 1) { # We're the first word so far to have | ||
| 61 | # this abbreviation. | ||||
| 62 | $hashref->{$abbrev} = $word; | ||||
| 63 | } elsif ($seen == 2) { # We're the second word to have this | ||||
| 64 | # abbreviation, so we can't use it. | ||||
| 65 | delete $hashref->{$abbrev}; | ||||
| 66 | } else { # We're the third word to have this | ||||
| 67 | # abbreviation, so skip to the next word. | ||||
| 68 | next WORD; | ||||
| 69 | } | ||||
| 70 | } | ||||
| 71 | } | ||||
| 72 | # Non-abbreviations always get entered, even if they aren't unique | ||||
| 73 | 2 | 2µs | foreach $word (@_) { | ||
| 74 | 6 | 7µs | $hashref->{$word} = $word; | ||
| 75 | } | ||||
| 76 | 2 | 300ns | return if $returnvoid; | ||
| 77 | 2 | 10µs | if (wantarray) { | ||
| 78 | %{$hashref}; | ||||
| 79 | } else { | ||||
| 80 | 2 | 500ns | $hashref; | ||
| 81 | } | ||||
| 82 | } | ||||
| 83 | |||||
| 84 | 1 | 6µs | 1; |