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#!/bin/bash
x=($'\1' $'\2' $'\32' ' ' $'\a' $'\b' $'\t' $'\n' $'\v' $'\f' $'\r' $'\177' a \" \' \$ \! \` \~)
declare -p x
function test-awk-c2s() {
{
echo 43 # +
echo 945 # α
echo 12354 # あ
} | LANG=C awk '
BEGIN{
# ENCODING: UTF-8
if (sprintf("%c", 945) == "α") {
PRINTF_C_UNICODE = 1;
} else {
for (i = 1; i <= 255; i++)
byte2char[i] = sprintf("%c", i);
}
}
# ENCODING: UTF-8
function c2s(code, _, leadbyte_mark, leadbyte_sup, tail) {
if (PRINTF_C_UNICODE)
return sprintf("%c", code);
leadbyte_sup = 0x80;
leadbyte_mark = 0;
tail = "";
while (code >= leadbyte_sup) {
leadbyte_sup /= 2;
leadbyte_mark = leadbyte_mark ? leadbyte_mark / 2 : 0xFFC0;
tail = byte2char[0x80 + int(code % 64)] tail;
code = int(code / 64);
}
return byte2char[(leadbyte_mark + code) % 256] tail;
}
{print c2s($1);}
'
}
test-awk-c2s
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