summaryrefslogtreecommitdiff
path: root/lib/English.pm
blob: ce4520a89118b1509a8ab2133c876626e79c48e0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
package English;

require Exporter;
@ISA = (Exporter);

=head1 NAME

English - use nice English (or awk) names for ugly punctuation variables

=head1 SYNOPSIS

    use English;
    ...
    if ($ERRNO =~ /denied/) { ... }

=head1 DESCRIPTION

This module provides aliases for the built-in variables whose
names no one seems to like to read.  Variables with side-effects
which get triggered just by accessing them (like $0) will still 
be affected.

For those variables that have an B<awk> version, both long
and short English alternatives are provided.  For example, 
the C<$/> variable can be referred to either $RS or 
$INPUT_RECORD_SEPARATOR if you are using the English module.

See L<perlvar> for a complete list of these.

=cut

local $^W = 0;

# Grandfather $NAME import
sub import {
    my $this = shift;
    my @list = @_;
    local $Exporter::ExportLevel = 1;
    Exporter::import($this,grep {s/^\$/*/} @list);
}

@EXPORT = qw(
	*ARG
	*MATCH
	*PREMATCH
	*POSTMATCH
	*LAST_PAREN_MATCH
	*INPUT_LINE_NUMBER
	*NR
	*INPUT_RECORD_SEPARATOR
	*RS
	*OUTPUT_AUTOFLUSH
	*OUTPUT_FIELD_SEPARATOR
	*OFS
	*OUTPUT_RECORD_SEPARATOR
	*ORS
	*LIST_SEPARATOR
	*SUBSCRIPT_SEPARATOR
	*SUBSEP
	*FORMAT_PAGE_NUMBER
	*FORMAT_LINES_PER_PAGE
	*FORMAT_LINES_LEFT
	*FORMAT_NAME
	*FORMAT_TOP_NAME
	*FORMAT_LINE_BREAK_CHARACTERS
	*FORMAT_FORMFEED
	*CHILD_ERROR
	*OS_ERROR
	*ERRNO
	*EXTENDED_OS_ERROR
	*EVAL_ERROR
	*PROCESS_ID
	*PID
	*REAL_USER_ID
	*UID
	*EFFECTIVE_USER_ID
	*EUID
	*REAL_GROUP_ID
	*GID
	*EFFECTIVE_GROUP_ID
	*EGID
	*PROGRAM_NAME
	*PERL_VERSION
	*ACCUMULATOR
	*DEBUGGING
	*SYSTEM_FD_MAX
	*INPLACE_EDIT
	*PERLDB
	*BASETIME
	*WARNING
	*EXECUTABLE_NAME
	*OSNAME
);

# The ground of all being.

	*ARG					= *_	;

# Matching.

	*MATCH					= *&	;
	*PREMATCH				= *`	;
	*POSTMATCH				= *'	;
	*LAST_PAREN_MATCH			= *+	;

# Input.

	*INPUT_LINE_NUMBER			= *.	;
	    *NR					= *.	;
	*INPUT_RECORD_SEPARATOR			= */	;
	    *RS					= */	;

# Output.

	*OUTPUT_AUTOFLUSH			= *|	;
	*OUTPUT_FIELD_SEPARATOR			= *,	;
	    *OFS				= *,	;
	*OUTPUT_RECORD_SEPARATOR		= *\	;
	    *ORS				= *\	;

# Interpolation "constants".

	*LIST_SEPARATOR				= *"	;
	*SUBSCRIPT_SEPARATOR			= *;	;
	    *SUBSEP				= *;	;

# Formats

	*FORMAT_PAGE_NUMBER			= *%	;
	*FORMAT_LINES_PER_PAGE			= *=	;
	*FORMAT_LINES_LEFT			= *-	;
	*FORMAT_NAME				= *~	;
	*FORMAT_TOP_NAME			= *^	;
	*FORMAT_LINE_BREAK_CHARACTERS		= *:	;
	*FORMAT_FORMFEED			= *^L	;

# Error status.

	*CHILD_ERROR				= *?	;
	*OS_ERROR				= *!	;
	*EXTENDED_OS_ERROR			= *^E	;
	    *ERRNO				= *!	;
	*EVAL_ERROR				= *@	;

# Process info.

	*PROCESS_ID				= *$	;
	    *PID				= *$	;
	*REAL_USER_ID				= *<	;
	    *UID				= *<	;
	*EFFECTIVE_USER_ID			= *>	;
	    *EUID				= *>	;
	*REAL_GROUP_ID				= *(	;
	    *GID				= *(	;
	*EFFECTIVE_GROUP_ID			= *)	;
	    *EGID				= *)	;
	*PROGRAM_NAME				= *0	;

# Internals.

	*PERL_VERSION				= *]	;
	*ACCUMULATOR				= *^A	;
	*DEBUGGING				= *^D	;
	*SYSTEM_FD_MAX				= *^F	;
	*INPLACE_EDIT				= *^I	;
	*PERLDB					= *^P	;
	*BASETIME				= *^T	;
	*WARNING				= *^W	;
	*EXECUTABLE_NAME			= *^X	;
	*OSNAME					= *^O	;

# Deprecated.

#	*ARRAY_BASE				= *[	;
#	*OFMT					= *#	;
#	*MULTILINE_MATCHING			= **	;

1;