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194 lines
3.8 KiB
194 lines
3.8 KiB
package English;
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require Exporter;
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@ISA = (Exporter);
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=head1 NAME
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English - use nice English (or awk) names for ugly punctuation variables
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=head1 SYNOPSIS
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use English;
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...
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if ($ERRNO =~ /denied/) { ... }
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=head1 DESCRIPTION
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This module provides aliases for the built-in variables whose
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names no one seems to like to read. Variables with side-effects
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which get triggered just by accessing them (like $0) will still
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be affected.
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For those variables that have an B<awk> version, both long
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and short English alternatives are provided. For example,
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the C<$/> variable can be referred to either $RS or
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$INPUT_RECORD_SEPARATOR if you are using the English module.
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See L<perlvar> for a complete list of these.
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=head1 BUGS
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This module provokes sizeable inefficiencies for regular expressions,
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due to unfortunate implementation details. If performance matters,
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consider avoiding English.
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=cut
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no warnings;
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# Grandfather $NAME import
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sub import {
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my $this = shift;
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my @list = @_;
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local $Exporter::ExportLevel = 1;
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Exporter::import($this,grep {s/^\$/*/} @list);
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}
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@EXPORT = qw(
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*ARG
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*MATCH
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*PREMATCH
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*POSTMATCH
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*LAST_PAREN_MATCH
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*INPUT_LINE_NUMBER
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*NR
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*INPUT_RECORD_SEPARATOR
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*RS
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*OUTPUT_AUTOFLUSH
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*OUTPUT_FIELD_SEPARATOR
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*OFS
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*OUTPUT_RECORD_SEPARATOR
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*ORS
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*LIST_SEPARATOR
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*SUBSCRIPT_SEPARATOR
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*SUBSEP
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*FORMAT_PAGE_NUMBER
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*FORMAT_LINES_PER_PAGE
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*FORMAT_LINES_LEFT
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*FORMAT_NAME
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*FORMAT_TOP_NAME
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*FORMAT_LINE_BREAK_CHARACTERS
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*FORMAT_FORMFEED
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*CHILD_ERROR
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*OS_ERROR
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*ERRNO
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*EXTENDED_OS_ERROR
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*EVAL_ERROR
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*PROCESS_ID
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*PID
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*REAL_USER_ID
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*UID
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*EFFECTIVE_USER_ID
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*EUID
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*REAL_GROUP_ID
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*GID
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*EFFECTIVE_GROUP_ID
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*EGID
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*PROGRAM_NAME
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*PERL_VERSION
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*ACCUMULATOR
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*DEBUGGING
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*SYSTEM_FD_MAX
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*INPLACE_EDIT
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*PERLDB
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*BASETIME
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*WARNING
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*EXECUTABLE_NAME
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*OSNAME
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*LAST_REGEXP_CODE_RESULT
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*EXCEPTIONS_BEING_CAUGHT
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@LAST_MATCH_START
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@LAST_MATCH_END
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);
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# The ground of all being. @ARG is deprecated (5.005 makes @_ lexical)
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*ARG = *_ ;
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# Matching.
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*MATCH = *& ;
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*PREMATCH = *` ;
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*POSTMATCH = *' ;
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*LAST_PAREN_MATCH = *+ ;
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*LAST_MATCH_START = *-{ARRAY} ;
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*LAST_MATCH_END = *+{ARRAY} ;
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# Input.
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*INPUT_LINE_NUMBER = *. ;
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*NR = *. ;
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*INPUT_RECORD_SEPARATOR = */ ;
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*RS = */ ;
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# Output.
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*OUTPUT_AUTOFLUSH = *| ;
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*OUTPUT_FIELD_SEPARATOR = *, ;
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*OFS = *, ;
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*OUTPUT_RECORD_SEPARATOR = *\ ;
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*ORS = *\ ;
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# Interpolation "constants".
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*LIST_SEPARATOR = *" ;
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*SUBSCRIPT_SEPARATOR = *; ;
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*SUBSEP = *; ;
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# Formats
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*FORMAT_PAGE_NUMBER = *% ;
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*FORMAT_LINES_PER_PAGE = *= ;
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*FORMAT_LINES_LEFT = *- ;
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*FORMAT_NAME = *~ ;
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*FORMAT_TOP_NAME = *^ ;
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*FORMAT_LINE_BREAK_CHARACTERS = *: ;
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*FORMAT_FORMFEED = *^L ;
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# Error status.
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*CHILD_ERROR = *? ;
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*OS_ERROR = *! ;
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*ERRNO = *! ;
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*EXTENDED_OS_ERROR = *^E ;
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*EVAL_ERROR = *@ ;
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# Process info.
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*PROCESS_ID = *$ ;
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*PID = *$ ;
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*REAL_USER_ID = *< ;
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*UID = *< ;
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*EFFECTIVE_USER_ID = *> ;
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*EUID = *> ;
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*REAL_GROUP_ID = *( ;
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*GID = *( ;
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*EFFECTIVE_GROUP_ID = *) ;
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*EGID = *) ;
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*PROGRAM_NAME = *0 ;
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# Internals.
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*PERL_VERSION = *^V ;
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*ACCUMULATOR = *^A ;
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*COMPILING = *^C ;
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*DEBUGGING = *^D ;
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*SYSTEM_FD_MAX = *^F ;
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*INPLACE_EDIT = *^I ;
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*PERLDB = *^P ;
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*LAST_REGEXP_CODE_RESULT = *^R ;
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*EXCEPTIONS_BEING_CAUGHT = *^S ;
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*BASETIME = *^T ;
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*WARNING = *^W ;
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*EXECUTABLE_NAME = *^X ;
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*OSNAME = *^O ;
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# Deprecated.
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# *ARRAY_BASE = *[ ;
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# *OFMT = *# ;
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# *MULTILINE_MATCHING = ** ;
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# *OLD_PERL_VERSION = *] ;
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1;
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