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Performance tune utf8 conversion

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This commit is contained in:
James Roseborough
2008-07-09 21:52:21 +00:00
parent c4a4e7f2cf
commit 508bfad573
1 changed files with 9 additions and 9 deletions
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16
src/core/org/luaj/vm/LString.java
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@@ -103,19 +103,19 @@ public class LString extends LValue {
*/ */
public String toJavaString() { public String toJavaString() {
char[] c=new char[m_length]; char[] c=new char[m_length];
int i, b, n=0; int i, j, b, n=0;
for ( i=0; i<m_length; ) { for ( i=m_offset, j=m_offset+m_length; i<j; ) {
if ((b = m_bytes[m_offset+(i++)]) == 0) if ((b = m_bytes[i++]) == 0)
return new String(c,0,n); return new String(c,0,n);
c[n++] = (char) ( c[n++] = (char) (
(b>=0||i>=m_length)? (b>=0||i>=j)?
b: b:
(b<-32||i+1>=m_length)? (b<-32||i+1>=j)?
(((b&0x3f) << 6) (((b&0x3f) << 6)
| (m_bytes[m_offset+(i++)]&0x3f)): | (m_bytes[i++]&0x3f)):
(((b&0xf) << 12) (((b&0xf) << 12)
| ((m_bytes[m_offset+(i++)]&0x3f)<<6) | ((m_bytes[i++]&0x3f)<<6)
| (m_bytes[m_offset+(i++)]&0x3f)) | (m_bytes[i++]&0x3f))
); );
} }
return new String(c,0,n); return new String(c,0,n);