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Reduce the number of calls to strncmp() required to run editDist3Core().

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FossilOrigin-Name: afd6fbc01052ccfc9bd29fb8f934b291b8f56af44fcae870da7e1355fe95c29a
This commit is contained in:
drh
2018-02-15 03:05:56 +00:00
parent 501ea05630
commit 46e835a2c4
3 changed files with 10 additions and 7 deletions
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3
ext/misc/spellfix.c
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@ -756,6 +756,7 @@ static int utf8Len(unsigned char c, int N){
** the given string.
*/
static int matchTo(EditDist3Cost *p, const char *z, int n){
if( p->a[p->nFrom]!=z[0] ) return 0;
if( p->nTo>n ) return 0;
if( strncmp(p->a+p->nFrom, z, p->nTo)!=0 ) return 0;
return 1;
@ -767,6 +768,7 @@ static int matchTo(EditDist3Cost *p, const char *z, int n){
*/
static int matchFrom(EditDist3Cost *p, const char *z, int n){
assert( p->nFrom<=n );
if( p->a[0]!=z[0] ) return 0;
if( strncmp(p->a, z, p->nFrom)!=0 ) return 0;
return 1;
}
@ -783,6 +785,7 @@ static int matchFromTo(
){
int b1 = pStr->a[n1].nByte;
if( b1>n2 ) return 0;
if( pStr->z[n1]!=z2[0] ) return 0;
if( strncmp(pStr->z+n1, z2, b1)!=0 ) return 0;
return 1;
}