diff options
Diffstat (limited to 'src/lobject.js')
| -rw-r--r-- | src/lobject.js | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/lobject.js b/src/lobject.js index c2950b6..d713183 100644 --- a/src/lobject.js +++ b/src/lobject.js @@ -118,31 +118,32 @@ class TValue { return this.ttisnil() || (this.ttisboolean() && this.value === false); } - jsstring() { + jsstring(from, to) { let u0, u1, u2, u3, u4, u5; let idx = 0; + let value = this.value.slice(from ? from : 0, to); 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++]; + u0 = value[idx++]; if (!u0) return str; if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; } - u1 = this.value[idx++] & 63; + u1 = value[idx++] & 63; if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; } - u2 = this.value[idx++] & 63; + u2 = value[idx++] & 63; if ((u0 & 0xF0) == 0xE0) { u0 = ((u0 & 15) << 12) | (u1 << 6) | u2; } else { - u3 = this.value[idx++] & 63; + u3 = value[idx++] & 63; if ((u0 & 0xF8) == 0xF0) { u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | u3; } else { - u4 = this.value[idx++] & 63; + u4 = value[idx++] & 63; if ((u0 & 0xFC) == 0xF8) { u0 = ((u0 & 3) << 24) | (u1 << 18) | (u2 << 12) | (u3 << 6) | u4; } else { - u5 = this.value[idx++] & 63; + u5 = value[idx++] & 63; u0 = ((u0 & 1) << 30) | (u1 << 24) | (u2 << 18) | (u3 << 12) | (u4 << 6) | u5; } } |