summaryrefslogtreecommitdiff
path: root/src/lobject.js
diff options
context:
space:
mode:
Diffstat (limited to 'src/lobject.js')
-rw-r--r--src/lobject.js39
1 files changed, 38 insertions, 1 deletions
diff --git a/src/lobject.js b/src/lobject.js
index 739db50..556da08 100644
--- a/src/lobject.js
+++ b/src/lobject.js
@@ -111,7 +111,44 @@ class TValue {
}
jsstring() {
- return this.ttisstring() ? String.fromCharCode(...this.value) : null;
+ //return this.ttisstring() ? String.fromCharCode(...this.value) : null;
+ let u0, u1, u2, u3, u4, u5;
+ let idx = 0;
+
+ var str = '';
+ while (1) {
+ // For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description and https://www.ietf.org/rfc/rfc2279.txt and https://tools.ietf.org/html/rfc3629
+ u0 = this.value[idx++];
+ if (!u0) return str;
+ if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
+ u1 = this.value[idx++] & 63;
+ if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
+ u2 = this.value[idx++] & 63;
+ if ((u0 & 0xF0) == 0xE0) {
+ u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
+ } else {
+ u3 = this.value[idx++] & 63;
+ if ((u0 & 0xF8) == 0xF0) {
+ u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | u3;
+ } else {
+ u4 = this.value[idx++] & 63;
+ if ((u0 & 0xFC) == 0xF8) {
+ u0 = ((u0 & 3) << 24) | (u1 << 18) | (u2 << 12) | (u3 << 6) | u4;
+ } else {
+ u5 = this.value[idx++] & 63;
+ u0 = ((u0 & 1) << 30) | (u1 << 24) | (u2 << 18) | (u3 << 12) | (u4 << 6) | u5;
+ }
+ }
+ }
+ if (u0 < 0x10000) {
+ str += String.fromCharCode(u0);
+ } else {
+ var ch = u0 - 0x10000;
+ str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
+ }
+ }
+
+ return str;
}
}