[10672] | 1 | # ------------------------------------------------------------------------------ |
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| 2 | # (C) British Crown Copyright 2006-17 Met Office. |
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| 3 | # |
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| 4 | # This file is part of FCM, tools for managing and building source code. |
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| 5 | # |
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| 6 | # FCM is free software: you can redistribute it and/or modify |
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| 7 | # it under the terms of the GNU General Public License as published by |
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| 8 | # the Free Software Foundation, either version 3 of the License, or |
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| 9 | # (at your option) any later version. |
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| 10 | # |
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| 11 | # FCM is distributed in the hope that it will be useful, |
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| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | # GNU General Public License for more details. |
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| 15 | # |
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| 16 | # You should have received a copy of the GNU General Public License |
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| 17 | # along with FCM. If not, see <http://www.gnu.org/licenses/>. |
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| 18 | # ------------------------------------------------------------------------------ |
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| 19 | # NAME |
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| 20 | # FCM1::CfgLine |
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| 21 | # |
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| 22 | # DESCRIPTION |
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| 23 | # This class is used for grouping the settings in each line of a FCM |
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| 24 | # configuration file. |
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| 25 | # |
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| 26 | # ------------------------------------------------------------------------------ |
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| 27 | |
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| 28 | package FCM1::CfgLine; |
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| 29 | @ISA = qw(FCM1::Base); |
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| 30 | |
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| 31 | # Standard pragma |
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| 32 | use warnings; |
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| 33 | use strict; |
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| 34 | |
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| 35 | # Standard modules |
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| 36 | use File::Basename; |
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| 37 | |
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| 38 | # In-house modules |
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| 39 | use FCM1::Base; |
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| 40 | use FCM1::Config; |
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| 41 | use FCM1::Util; |
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| 42 | |
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| 43 | # List of property methods for this class |
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| 44 | my @scalar_properties = ( |
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| 45 | 'bvalue', # line value, in boolean |
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| 46 | 'comment', # (in)line comment |
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| 47 | 'error', # error message for incorrect usage while parsing the line |
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| 48 | 'label', # line label |
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| 49 | 'line', # content of the line |
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| 50 | 'number', # line number in source file |
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| 51 | 'parsed', # has this line been parsed (by the extract/build system)? |
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| 52 | 'prefix', # optional prefix for line label |
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| 53 | 'slabel', # label without the optional prefix |
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| 54 | 'src', # name of source file |
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| 55 | 'value', # line value |
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| 56 | 'warning', # warning message for deprecated usage |
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| 57 | ); |
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| 58 | |
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| 59 | # Useful variables |
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| 60 | our $COMMENT_RULER = '-' x 78; |
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| 61 | |
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| 62 | # ------------------------------------------------------------------------------ |
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| 63 | # SYNOPSIS |
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| 64 | # @cfglines = FCM1::CfgLine->comment_block (@comment); |
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| 65 | # |
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| 66 | # DESCRIPTION |
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| 67 | # This method returns a list of FCM1::CfgLine objects representing a comment |
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| 68 | # block with the comment string @comment. |
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| 69 | # ------------------------------------------------------------------------------ |
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| 70 | |
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| 71 | sub comment_block { |
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| 72 | my @return = ( |
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| 73 | FCM1::CfgLine->new (comment => $COMMENT_RULER), |
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| 74 | (map {FCM1::CfgLine->new (comment => $_)} @_), |
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| 75 | FCM1::CfgLine->new (comment => $COMMENT_RULER), |
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| 76 | FCM1::CfgLine->new (), |
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| 77 | ); |
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| 78 | |
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| 79 | return @return; |
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| 80 | } |
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| 81 | |
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| 82 | # ------------------------------------------------------------------------------ |
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| 83 | # SYNOPSIS |
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| 84 | # $obj = FCM1::CfgLine->new (%args); |
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| 85 | # |
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| 86 | # DESCRIPTION |
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| 87 | # This method constructs a new instance of the FCM1::CfgLine class. See above |
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| 88 | # for allowed list of properties. (KEYS should be in uppercase.) |
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| 89 | # ------------------------------------------------------------------------------ |
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| 90 | |
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| 91 | sub new { |
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| 92 | my $this = shift; |
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| 93 | my %args = @_; |
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| 94 | my $class = ref $this || $this; |
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| 95 | |
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| 96 | my $self = FCM1::Base->new (%args); |
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| 97 | |
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| 98 | for (@scalar_properties) { |
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| 99 | $self->{$_} = exists $args{uc ($_)} ? $args{uc ($_)} : undef; |
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| 100 | $self->{$_} = $args{$_} if exists $args{$_}; |
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| 101 | } |
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| 102 | |
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| 103 | bless $self, $class; |
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| 104 | return $self; |
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| 105 | } |
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| 106 | |
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| 107 | # ------------------------------------------------------------------------------ |
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| 108 | # SYNOPSIS |
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| 109 | # $value = $obj->X; |
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| 110 | # $obj->X ($value); |
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| 111 | # |
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| 112 | # DESCRIPTION |
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| 113 | # Details of these properties are explained in @scalar_properties. |
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| 114 | # ------------------------------------------------------------------------------ |
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| 115 | |
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| 116 | for my $name (@scalar_properties) { |
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| 117 | no strict 'refs'; |
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| 118 | |
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| 119 | *$name = sub { |
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| 120 | my $self = shift; |
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| 121 | |
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| 122 | if (@_) { |
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| 123 | $self->{$name} = $_[0]; |
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| 124 | |
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| 125 | if ($name eq 'line' or $name eq 'label') { |
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| 126 | $self->{slabel} = undef; |
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| 127 | |
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| 128 | } elsif ($name eq 'line' or $name eq 'value') { |
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| 129 | $self->{bvalue} = undef; |
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| 130 | } |
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| 131 | } |
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| 132 | |
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| 133 | # Default value for property |
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| 134 | if (not defined $self->{$name}) { |
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| 135 | if ($name =~ /^(?:comment|error|label|line|prefix|src|value)$/) { |
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| 136 | # Blank |
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| 137 | $self->{$name} = ''; |
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| 138 | |
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| 139 | } elsif ($name eq 'slabel') { |
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| 140 | if ($self->prefix and $self->label_starts_with ($self->prefix)) { |
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| 141 | $self->{$name} = $self->label_from_field (1); |
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| 142 | |
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| 143 | } else { |
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| 144 | $self->{$name} = $self->label; |
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| 145 | } |
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| 146 | |
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| 147 | } elsif ($name eq 'bvalue') { |
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| 148 | if (defined ($self->value)) { |
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| 149 | $self->{$name} = ($self->value =~ /^(\s*|false|no|off|0*)$/i) |
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| 150 | ? 0 : $self->value; |
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| 151 | } |
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| 152 | } |
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| 153 | } |
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| 154 | |
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| 155 | return $self->{$name}; |
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| 156 | } |
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| 157 | } |
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| 158 | |
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| 159 | # ------------------------------------------------------------------------------ |
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| 160 | # SYNOPSIS |
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| 161 | # @fields = $obj->label_fields (); |
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| 162 | # @fields = $obj->slabel_fields (); |
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| 163 | # |
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| 164 | # DESCRIPTION |
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| 165 | # These method returns a list of fields in the (s)label. |
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| 166 | # ------------------------------------------------------------------------------ |
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| 167 | |
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| 168 | for my $name (qw/label slabel/) { |
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| 169 | no strict 'refs'; |
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| 170 | |
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| 171 | my $sub_name = $name . '_fields'; |
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| 172 | *$sub_name = sub { |
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| 173 | return (split (/$FCM1::Config::DELIMITER_PATTERN/, $_[0]->$name)); |
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| 174 | } |
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| 175 | } |
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| 176 | |
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| 177 | # ------------------------------------------------------------------------------ |
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| 178 | # SYNOPSIS |
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| 179 | # $string = $obj->label_from_field ($index); |
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| 180 | # $string = $obj->slabel_from_field ($index); |
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| 181 | # |
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| 182 | # DESCRIPTION |
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| 183 | # These method returns the (s)label from field $index onwards. |
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| 184 | # ------------------------------------------------------------------------------ |
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| 185 | |
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| 186 | for my $name (qw/label slabel/) { |
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| 187 | no strict 'refs'; |
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| 188 | |
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| 189 | my $sub_name = $name . '_from_field'; |
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| 190 | *$sub_name = sub { |
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| 191 | my ($self, $index) = @_; |
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| 192 | my $method = $name . '_fields'; |
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| 193 | my @fields = $self->$method; |
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| 194 | return join ($FCM1::Config::DELIMITER, @fields[$index .. $#fields]); |
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| 195 | } |
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| 196 | } |
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| 197 | |
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| 198 | # ------------------------------------------------------------------------------ |
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| 199 | # SYNOPSIS |
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| 200 | # $flag = $obj->label_starts_with (@fields); |
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| 201 | # $flag = $obj->slabel_starts_with (@fields); |
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| 202 | # |
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| 203 | # DESCRIPTION |
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| 204 | # These method returns a true if (s)label starts with the labels in @fields |
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| 205 | # (ignore case). |
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| 206 | # ------------------------------------------------------------------------------ |
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| 207 | |
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| 208 | for my $name (qw/label slabel/) { |
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| 209 | no strict 'refs'; |
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| 210 | |
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| 211 | my $sub_name = $name . '_starts_with'; |
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| 212 | *$sub_name = sub { |
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| 213 | my ($self, @fields) = @_; |
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| 214 | my $return = 1; |
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| 215 | |
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| 216 | my $method = $name . '_fields'; |
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| 217 | my @all_fields = $self->$method; |
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| 218 | |
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| 219 | for my $i (0 .. $#fields) { |
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| 220 | next if $all_fields[$i] && lc($fields[$i]) eq lc($all_fields[$i]); |
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| 221 | $return = 0; |
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| 222 | last; |
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| 223 | } |
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| 224 | |
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| 225 | return $return; |
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| 226 | } |
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| 227 | } |
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| 228 | |
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| 229 | # ------------------------------------------------------------------------------ |
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| 230 | # SYNOPSIS |
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| 231 | # $flag = $obj->label_starts_with_cfg (@fields); |
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| 232 | # $flag = $obj->slabel_starts_with_cfg (@fields); |
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| 233 | # |
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| 234 | # DESCRIPTION |
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| 235 | # These method returns a true if (s)label starts with the configuration file |
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| 236 | # labels in @fields (ignore case). |
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| 237 | # ------------------------------------------------------------------------------ |
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| 238 | |
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| 239 | for my $name (qw/label slabel/) { |
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| 240 | no strict 'refs'; |
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| 241 | |
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| 242 | my $sub_name = $name . '_starts_with_cfg'; |
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| 243 | *$sub_name = sub { |
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| 244 | my ($self, @fields) = @_; |
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| 245 | |
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| 246 | for my $field (@fields) { |
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| 247 | $field = $self->cfglabel ($field); |
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| 248 | } |
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| 249 | |
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| 250 | my $method = $name . '_starts_with'; |
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| 251 | return $self->$method (@fields); |
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| 252 | } |
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| 253 | } |
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| 254 | |
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| 255 | # ------------------------------------------------------------------------------ |
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| 256 | # SYNOPSIS |
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| 257 | # $mesg = $obj->format_error (); |
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| 258 | # |
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| 259 | # DESCRIPTION |
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| 260 | # This method returns a string containing a formatted error message for |
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| 261 | # anything reported to the current line. |
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| 262 | # ------------------------------------------------------------------------------ |
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| 263 | |
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| 264 | sub format_error { |
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| 265 | my ($self) = @_; |
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| 266 | my $mesg = ''; |
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| 267 | |
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| 268 | $mesg .= $self->format_warning; |
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| 269 | |
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| 270 | if ($self->error or not $self->parsed) { |
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| 271 | $mesg = 'ERROR: ' . $self->src . ': LINE ' . $self->number . ':' . "\n"; |
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| 272 | if ($self->error) { |
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| 273 | $mesg .= ' ' . $self->error; |
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| 274 | |
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| 275 | } else { |
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| 276 | $mesg .= ' ' . $self->label . ': label not recognised.'; |
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| 277 | } |
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| 278 | } |
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| 279 | |
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| 280 | return $mesg; |
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| 281 | } |
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| 282 | |
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| 283 | # ------------------------------------------------------------------------------ |
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| 284 | # SYNOPSIS |
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| 285 | # $mesg = $obj->format_warning (); |
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| 286 | # |
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| 287 | # DESCRIPTION |
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| 288 | # This method returns a string containing a formatted warning message for |
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| 289 | # any warning reported to the current line. |
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| 290 | # ------------------------------------------------------------------------------ |
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| 291 | |
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| 292 | sub format_warning { |
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| 293 | my ($self) = @_; |
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| 294 | my $mesg = ''; |
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| 295 | |
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| 296 | if ($self->warning) { |
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| 297 | $mesg = 'WARNING: ' . $self->src . ': LINE ' . $self->number . ':' . "\n"; |
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| 298 | $mesg .= ' ' . $self->warning; |
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| 299 | } |
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| 300 | |
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| 301 | return $mesg; |
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| 302 | } |
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| 303 | |
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| 304 | # ------------------------------------------------------------------------------ |
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| 305 | # SYNOPSIS |
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| 306 | # $line = $obj->print_line ([$space]); |
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| 307 | # |
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| 308 | # DESCRIPTION |
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| 309 | # This method returns a configuration line using $self->label, $self->value |
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| 310 | # and $self->comment. The value in $self->line is re-set. If $space is set |
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| 311 | # and is a positive integer, it sets the spacing between the label and the |
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| 312 | # value in the line. The default is 1. |
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| 313 | # ------------------------------------------------------------------------------ |
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| 314 | |
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| 315 | sub print_line { |
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| 316 | my ($self, $space) = @_; |
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| 317 | |
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| 318 | # Set space between label and value, default to 1 character |
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| 319 | $space = 1 unless $space and $space =~ /^[1-9]\d*$/; |
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| 320 | |
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| 321 | my $line = ''; |
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| 322 | |
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| 323 | # Add label and value, if label is set |
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| 324 | if ($self->label) { |
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| 325 | $line .= $self->label . ' ' x $space; |
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| 326 | $line .= $self->value if defined $self->value; |
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| 327 | } |
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| 328 | |
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| 329 | # Add comment if necessary |
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| 330 | my $comment = $self->comment; |
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| 331 | $comment =~ s/^\s*//; |
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| 332 | |
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| 333 | if ($comment) { |
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| 334 | $comment = '# ' . $comment if $comment !~ /^#/; |
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| 335 | $line .= ' ' if $line; |
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| 336 | $line .= $comment; |
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| 337 | } |
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| 338 | |
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| 339 | return $self->line ($line); |
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| 340 | } |
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| 341 | |
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| 342 | # ------------------------------------------------------------------------------ |
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| 343 | |
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| 344 | 1; |
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| 345 | |
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| 346 | __END__ |
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