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author | LinuxWizard42 <computerwizard@linuxmail.org> | 2022-10-12 22:54:37 +0300 |
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committer | LinuxWizard42 <computerwizard@linuxmail.org> | 2022-10-12 22:54:37 +0300 |
commit | 703e03aba33f234712206769f57717ba7d92d23d (patch) | |
tree | 0041f04ccb75bd5379c764e9fe42249fffe75fc3 /node_modules/is-utf8/is-utf8.js | |
parent | ab6e257e6e9d9a483d7e86f220d8b209a2cd7753 (diff) | |
download | FlashRunner-703e03aba33f234712206769f57717ba7d92d23d.tar.gz FlashRunner-703e03aba33f234712206769f57717ba7d92d23d.tar.zst |
Added export_allowed file to make repository visible in cgit
Diffstat (limited to 'node_modules/is-utf8/is-utf8.js')
-rw-r--r-- | node_modules/is-utf8/is-utf8.js | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/node_modules/is-utf8/is-utf8.js b/node_modules/is-utf8/is-utf8.js new file mode 100644 index 0000000..8a5f15d --- /dev/null +++ b/node_modules/is-utf8/is-utf8.js @@ -0,0 +1,76 @@ + +exports = module.exports = function(bytes) +{ + var i = 0; + while(i < bytes.length) + { + if( (// ASCII + bytes[i] == 0x09 || + bytes[i] == 0x0A || + bytes[i] == 0x0D || + (0x20 <= bytes[i] && bytes[i] <= 0x7E) + ) + ) { + i += 1; + continue; + } + + if( (// non-overlong 2-byte + (0xC2 <= bytes[i] && bytes[i] <= 0xDF) && + (0x80 <= bytes[i+1] && bytes[i+1] <= 0xBF) + ) + ) { + i += 2; + continue; + } + + if( (// excluding overlongs + bytes[i] == 0xE0 && + (0xA0 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) && + (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) + ) || + (// straight 3-byte + ((0xE1 <= bytes[i] && bytes[i] <= 0xEC) || + bytes[i] == 0xEE || + bytes[i] == 0xEF) && + (0x80 <= bytes[i + 1] && bytes[i+1] <= 0xBF) && + (0x80 <= bytes[i+2] && bytes[i+2] <= 0xBF) + ) || + (// excluding surrogates + bytes[i] == 0xED && + (0x80 <= bytes[i+1] && bytes[i+1] <= 0x9F) && + (0x80 <= bytes[i+2] && bytes[i+2] <= 0xBF) + ) + ) { + i += 3; + continue; + } + + if( (// planes 1-3 + bytes[i] == 0xF0 && + (0x90 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) && + (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) && + (0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xBF) + ) || + (// planes 4-15 + (0xF1 <= bytes[i] && bytes[i] <= 0xF3) && + (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0xBF) && + (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) && + (0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xBF) + ) || + (// plane 16 + bytes[i] == 0xF4 && + (0x80 <= bytes[i + 1] && bytes[i + 1] <= 0x8F) && + (0x80 <= bytes[i + 2] && bytes[i + 2] <= 0xBF) && + (0x80 <= bytes[i + 3] && bytes[i + 3] <= 0xBF) + ) + ) { + i += 4; + continue; + } + + return false; + } + + return true; +} |