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Filename : US_ASCII.pm
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# Conversion routines for US-ASCII.
# Copyright (C) 2002-2016 Guido Flohr <guido.flohr@cantanea.com>,
# all rights reserved.

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

package Locale::RecodeData::US_ASCII;

use strict;

require Locale::RecodeData;
use base qw(Locale::RecodeData);

sub _recode
{
    if ($_[0]->{_from} eq 'INTERNAL') {
		# FIXME: Maybe the lookup is cheaper than the call to chr().
		$_[1] = join '', 
		    map $_ > 0x7f ? '?' : chr $_,
			    @{$_[1]};
    } elsif ($_[0]->{_to} eq 'UTF-8') {
		# FIXME: Maybe the lookup is cheaper than the call to chr().
		$_[1] = join '', 
		    map $_ > 0x7f ? "\xef\xbf\xbd" : chr $_, unpack 'C*', $_[1];
    } else {
		$_[1] = [ map { $_ > 0x7f ? 0xfffd : $_ } unpack 'C*', $_[1] ];
    }

    return 1;
}

1;

__END__

=head1 NAME

Locale::RecodeData::US_ASCII - Conversion routines for US-ASCII

=head1 SYNOPSIS

This module is internal to libintl.  Do not use directly!

=head1 DESCRIPTION

This module contains the conversion tables and routines for US-ASCII.

=head1 CHARACTER TABLE

The following table is sorted in the same order as the original charmap.
All character codes are in hexadecimal.  Please read 'ISO-10646' as
'ISO-10646-UCS4'.

 Local | ISO-10646 | Description
-------+-----------+-------------------------------------------------
    00 |  00000000 | NULL (NUL)
    01 |  00000001 | START OF HEADING (SOH)
    02 |  00000002 | START OF TEXT (STX)
    03 |  00000003 | END OF TEXT (ETX)
    04 |  00000004 | END OF TRANSMISSION (EOT)
    05 |  00000005 | ENQUIRY (ENQ)
    06 |  00000006 | ACKNOWLEDGE (ACK)
    07 |  00000007 | BELL (BEL)
    08 |  00000008 | BACKSPACE (BS)
    09 |  00000009 | CHARACTER TABULATION (HT)
    0A |  0000000A | LINE FEED (LF)
    0B |  0000000B | LINE TABULATION (VT)
    0C |  0000000C | FORM FEED (FF)
    0D |  0000000D | CARRIAGE RETURN (CR)
    0E |  0000000E | SHIFT OUT (SO)
    0F |  0000000F | SHIFT IN (SI)
    10 |  00000010 | DATALINK ESCAPE (DLE)
    11 |  00000011 | DEVICE CONTROL ONE (DC1)
    12 |  00000012 | DEVICE CONTROL TWO (DC2)
    13 |  00000013 | DEVICE CONTROL THREE (DC3)
    14 |  00000014 | DEVICE CONTROL FOUR (DC4)
    15 |  00000015 | NEGATIVE ACKNOWLEDGE (NAK)
    16 |  00000016 | SYNCHRONOUS IDLE (SYN)
    17 |  00000017 | END OF TRANSMISSION BLOCK (ETB)
    18 |  00000018 | CANCEL (CAN)
    19 |  00000019 | END OF MEDIUM (EM)
    1A |  0000001A | SUBSTITUTE (SUB)
    1B |  0000001B | ESCAPE (ESC)
    1C |  0000001C | FILE SEPARATOR (IS4)
    1D |  0000001D | GROUP SEPARATOR (IS3)
    1E |  0000001E | RECORD SEPARATOR (IS2)
    1F |  0000001F | UNIT SEPARATOR (IS1)
    20 |  00000020 | SPACE
    21 |  00000021 | EXCLAMATION MARK
    22 |  00000022 | QUOTATION MARK
    23 |  00000023 | NUMBER SIGN
    24 |  00000024 | DOLLAR SIGN
    25 |  00000025 | PERCENT SIGN
    26 |  00000026 | AMPERSAND
    27 |  00000027 | APOSTROPHE
    28 |  00000028 | LEFT PARENTHESIS
    29 |  00000029 | RIGHT PARENTHESIS
    2A |  0000002A | ASTERISK
    2B |  0000002B | PLUS SIGN
    2C |  0000002C | COMMA
    2D |  0000002D | HYPHEN-MINUS
    2E |  0000002E | FULL STOP
    2F |  0000002F | SOLIDUS
    30 |  00000030 | DIGIT ZERO
    31 |  00000031 | DIGIT ONE
    32 |  00000032 | DIGIT TWO
    33 |  00000033 | DIGIT THREE
    34 |  00000034 | DIGIT FOUR
    35 |  00000035 | DIGIT FIVE
    36 |  00000036 | DIGIT SIX
    37 |  00000037 | DIGIT SEVEN
    38 |  00000038 | DIGIT EIGHT
    39 |  00000039 | DIGIT NINE
    3A |  0000003A | COLON
    3B |  0000003B | SEMICOLON
    3C |  0000003C | LESS-THAN SIGN
    3D |  0000003D | EQUALS SIGN
    3E |  0000003E | GREATER-THAN SIGN
    3F |  0000003F | QUESTION MARK
    40 |  00000040 | COMMERCIAL AT
    41 |  00000041 | LATIN CAPITAL LETTER A
    42 |  00000042 | LATIN CAPITAL LETTER B
    43 |  00000043 | LATIN CAPITAL LETTER C
    44 |  00000044 | LATIN CAPITAL LETTER D
    45 |  00000045 | LATIN CAPITAL LETTER E
    46 |  00000046 | LATIN CAPITAL LETTER F
    47 |  00000047 | LATIN CAPITAL LETTER G
    48 |  00000048 | LATIN CAPITAL LETTER H
    49 |  00000049 | LATIN CAPITAL LETTER I
    4A |  0000004A | LATIN CAPITAL LETTER J
    4B |  0000004B | LATIN CAPITAL LETTER K
    4C |  0000004C | LATIN CAPITAL LETTER L
    4D |  0000004D | LATIN CAPITAL LETTER M
    4E |  0000004E | LATIN CAPITAL LETTER N
    4F |  0000004F | LATIN CAPITAL LETTER O
    50 |  00000050 | LATIN CAPITAL LETTER P
    51 |  00000051 | LATIN CAPITAL LETTER Q
    52 |  00000052 | LATIN CAPITAL LETTER R
    53 |  00000053 | LATIN CAPITAL LETTER S
    54 |  00000054 | LATIN CAPITAL LETTER T
    55 |  00000055 | LATIN CAPITAL LETTER U
    56 |  00000056 | LATIN CAPITAL LETTER V
    57 |  00000057 | LATIN CAPITAL LETTER W
    58 |  00000058 | LATIN CAPITAL LETTER X
    59 |  00000059 | LATIN CAPITAL LETTER Y
    5A |  0000005A | LATIN CAPITAL LETTER Z
    5B |  0000005B | LEFT SQUARE BRACKET
    5C |  0000005C | REVERSE SOLIDUS
    5D |  0000005D | RIGHT SQUARE BRACKET
    5E |  0000005E | CIRCUMFLEX ACCENT
    5F |  0000005F | LOW LINE
    60 |  00000060 | GRAVE ACCENT
    61 |  00000061 | LATIN SMALL LETTER A
    62 |  00000062 | LATIN SMALL LETTER B
    63 |  00000063 | LATIN SMALL LETTER C
    64 |  00000064 | LATIN SMALL LETTER D
    65 |  00000065 | LATIN SMALL LETTER E
    66 |  00000066 | LATIN SMALL LETTER F
    67 |  00000067 | LATIN SMALL LETTER G
    68 |  00000068 | LATIN SMALL LETTER H
    69 |  00000069 | LATIN SMALL LETTER I
    6A |  0000006A | LATIN SMALL LETTER J
    6B |  0000006B | LATIN SMALL LETTER K
    6C |  0000006C | LATIN SMALL LETTER L
    6D |  0000006D | LATIN SMALL LETTER M
    6E |  0000006E | LATIN SMALL LETTER N
    6F |  0000006F | LATIN SMALL LETTER O
    70 |  00000070 | LATIN SMALL LETTER P
    71 |  00000071 | LATIN SMALL LETTER Q
    72 |  00000072 | LATIN SMALL LETTER R
    73 |  00000073 | LATIN SMALL LETTER S
    74 |  00000074 | LATIN SMALL LETTER T
    75 |  00000075 | LATIN SMALL LETTER U
    76 |  00000076 | LATIN SMALL LETTER V
    77 |  00000077 | LATIN SMALL LETTER W
    78 |  00000078 | LATIN SMALL LETTER X
    79 |  00000079 | LATIN SMALL LETTER Y
    7A |  0000007A | LATIN SMALL LETTER Z
    7B |  0000007B | LEFT CURLY BRACKET
    7C |  0000007C | VERTICAL LINE
    7D |  0000007D | RIGHT CURLY BRACKET
    7E |  0000007E | TILDE
    7F |  0000007F | DELETE (DEL)

=head1 AUTHOR

Copyright (C) 2002-2016 L<Guido Flohr|http://www.guido-flohr.net/>
(L<mailto:guido.flohr@cantanea.com>), all rights reserved.  See the source
code for details!code for details!

=head1 SEE ALSO

Locale::RecodeData(3), Locale::Recode(3), perl(1)

=cut
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