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| 1 |  |  |  |  |  |  | ################################################################################################### | 
| 2 |  |  |  |  |  |  | # Copyright 2013/2014 by Marcel Greter | 
| 3 |  |  |  |  |  |  | # This file is part of OCBNET-CSS3 (GPL3) | 
| 4 |  |  |  |  |  |  | #################################################################################################### | 
| 5 |  |  |  |  |  |  | package OCBNET::CSS3::Regex::Numbers; | 
| 6 |  |  |  |  |  |  | #################################################################################################### | 
| 7 |  |  |  |  |  |  | our $VERSION = '0.2.5'; | 
| 8 |  |  |  |  |  |  | #################################################################################################### | 
| 9 |  |  |  |  |  |  |  | 
| 10 | 12 |  |  | 12 |  | 5594 | use strict; | 
|  | 12 |  |  |  |  | 23 |  | 
|  | 12 |  |  |  |  | 356 |  | 
| 11 | 12 |  |  | 12 |  | 54 | use warnings; | 
|  | 12 |  |  |  |  | 19 |  | 
|  | 12 |  |  |  |  | 445 |  | 
| 12 |  |  |  |  |  |  |  | 
| 13 |  |  |  |  |  |  | #################################################################################################### | 
| 14 |  |  |  |  |  |  |  | 
| 15 |  |  |  |  |  |  | # load exporter and inherit from it | 
| 16 | 12 |  |  | 12 |  | 63 | BEGIN { use Exporter qw(); our @ISA = qw(Exporter); } | 
|  | 12 |  |  | 12 |  | 20 |  | 
|  | 12 |  |  |  |  | 298 |  | 
|  | 12 |  |  |  |  | 577 |  | 
| 17 |  |  |  |  |  |  |  | 
| 18 |  |  |  |  |  |  | # define our functions that will be exported | 
| 19 | 12 |  |  | 12 |  | 3684 | BEGIN { our @EXPORT = qw($re_number $re_percent $re_size $re_length $re_byte fromPx toPx); } | 
| 20 |  |  |  |  |  |  |  | 
| 21 |  |  |  |  |  |  | #################################################################################################### | 
| 22 |  |  |  |  |  |  | # base regular expressions | 
| 23 |  |  |  |  |  |  | #################################################################################################### | 
| 24 |  |  |  |  |  |  |  | 
| 25 |  |  |  |  |  |  | # match (floating point) numbers | 
| 26 |  |  |  |  |  |  | #************************************************************************************************** | 
| 27 |  |  |  |  |  |  | our $re_number = qr/[\-\+]?[0-9]*\.?[0-9]+/s; | 
| 28 |  |  |  |  |  |  | # our $re_number_neg = qr/\-[0-9]*\.?[0-9]+/s; | 
| 29 |  |  |  |  |  |  | # our $re_number_pos = qr/\+?[0-9]*\.?[0-9]+/s; | 
| 30 |  |  |  |  |  |  |  | 
| 31 |  |  |  |  |  |  | # regular expression to match a percent property | 
| 32 |  |  |  |  |  |  | #************************************************************************************************** | 
| 33 |  |  |  |  |  |  | our $re_percent = qr/$re_number(?:\%)/i; | 
| 34 |  |  |  |  |  |  |  | 
| 35 |  |  |  |  |  |  | # regular expression to match a size property | 
| 36 |  |  |  |  |  |  | #************************************************************************************************** | 
| 37 |  |  |  |  |  |  | our $re_size = qr/$re_number(?:em|ex|px|in|cm|mm|pt|pc)/i; | 
| 38 |  |  |  |  |  |  |  | 
| 39 |  |  |  |  |  |  | # regular expression to match any length property | 
| 40 |  |  |  |  |  |  | #************************************************************************************************** | 
| 41 |  |  |  |  |  |  | our $re_length = qr/$re_number(?:em|ex|px|\%|in|cm|mm|pt|pc)?/i; | 
| 42 |  |  |  |  |  |  |  | 
| 43 |  |  |  |  |  |  | # match a octal number from 0 to 255 (strict match) | 
| 44 |  |  |  |  |  |  | #************************************************************************************************** | 
| 45 |  |  |  |  |  |  | our $re_byte = qr/(?:0|[1-9]\d?|1\d{2}|2(?:[0-4]\d|5[0-5]))/s; | 
| 46 |  |  |  |  |  |  |  | 
| 47 |  |  |  |  |  |  | #################################################################################################### | 
| 48 |  |  |  |  |  |  |  | 
| 49 |  |  |  |  |  |  | # parse dimension from pixel | 
| 50 |  |  |  |  |  |  | #************************************************************************************************** | 
| 51 |  |  |  |  |  |  | sub fromPx | 
| 52 |  |  |  |  |  |  | { | 
| 53 |  |  |  |  |  |  | # return undef if nothing passed | 
| 54 | 13 | 50 |  | 13 | 0 | 52 | return unless defined $_[0]; | 
| 55 |  |  |  |  |  |  | # parse number via regular expression (pretty strict) | 
| 56 | 13 | 100 |  |  |  | 265 | $_[0] =~ m/\A\s*($re_number)(?:px)?\s*\z/i ? $1 : undef; | 
| 57 |  |  |  |  |  |  | } | 
| 58 |  |  |  |  |  |  |  | 
| 59 |  |  |  |  |  |  | # adds pixel unit | 
| 60 |  |  |  |  |  |  | #************************************************************************************************** | 
| 61 |  |  |  |  |  |  | sub toPx | 
| 62 |  |  |  |  |  |  | { | 
| 63 |  |  |  |  |  |  | # parse via fromPx | 
| 64 | 5 |  |  | 5 | 0 | 18 | my $px = fromPx($_[0]); | 
| 65 |  |  |  |  |  |  | # check if input was valid | 
| 66 | 5 | 100 |  |  |  | 20 | return undef unless defined $px; | 
| 67 |  |  |  |  |  |  | # format correctly | 
| 68 | 4 |  |  |  |  | 65 | sprintf "%gpx", $px | 
| 69 |  |  |  |  |  |  | } | 
| 70 |  |  |  |  |  |  |  | 
| 71 |  |  |  |  |  |  | #################################################################################################### | 
| 72 |  |  |  |  |  |  | #################################################################################################### | 
| 73 |  |  |  |  |  |  | 1; |