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authorLinuxWizard42 <computerwizard@linuxmail.org>2022-10-12 22:54:37 +0300
committerLinuxWizard42 <computerwizard@linuxmail.org>2022-10-12 22:54:37 +0300
commit703e03aba33f234712206769f57717ba7d92d23d (patch)
tree0041f04ccb75bd5379c764e9fe42249fffe75fc3 /node_modules/is-utf8/is-utf8.js
parentab6e257e6e9d9a483d7e86f220d8b209a2cd7753 (diff)
downloadFlashRunner-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.js76
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;
+}