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Improvements to JSON string dequoting.

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FossilOrigin-Name: 196d66d34d9783622e6f2f79eafea1488fc6f5cf
This commit is contained in:
drh
2015-08-24 12:42:41 +00:00
parent 442a7c6015
commit 80d874083b
3 changed files with 12 additions and 16 deletions
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14
ext/misc/json1.c
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@ -454,33 +454,29 @@ static void jsonReturn(
}
for(i=1, j=0; i<n-1; i++){
char c = z[i];
if( c!='\\' && z[i+1] ){
if( c!='\\' ){
zOut[j++] = c;
}else{
c = z[++i];
if( c=='u' && z[1] ){
if( c=='u' ){
u32 v = 0, k;
for(k=0; k<4 && z[i+1]; i++, k++){
for(k=0; k<4 && i<n-2; i++, k++){
c = z[i+1];
if( c>='0' && c<='9' ) v = v*16 + c - '0';
else if( c>='A' && c<='F' ) v = v*16 + c - 'A' + 10;
else if( c>='a' && c<='f' ) v = v*16 + c - 'a' + 10;
else break;
}
if( v==0 ) break;
if( v<=0x7f ){
zOut[j++] = v;
}else if( v<=0x7ff ){
zOut[j++] = 0xc0 | (v>>6);
zOut[j++] = 0x80 | (v&0x3f);
}else if( v<=0xffff ){
}else{
zOut[j++] = 0xe0 | (v>>12);
zOut[j++] = 0x80 | ((v>>6)&0x3f);
zOut[j++] = 0x80 | (v&0x3f);
}else if( v<=0x10ffff ){
zOut[j++] = 0xf0 | (v>>18);
zOut[j++] = 0x80 | ((v>>12)&0x3f);
zOut[j++] = 0x80 | ((v>>6)&0x3f);
zOut[j++] = 0x80 | (v&0x3f);
}
}else{
if( c=='b' ){