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Tweak spellfix.c so that if SQLITE_SPELLFIX_5BYTE_MAPPINGS is defined at

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compile time the Transliteration structure has space for 5 byte (instead of 4
byte) mappings.

FossilOrigin-Name: cbaf5b6c1b07b29b2c83fa01618de856d81cc1174769cb9770cb5c894cc87ace
This commit is contained in:
dan
2018-09-26 16:05:07 +00:00
parent 6b26a7b950
commit 2e5e0e10f2
3 changed files with 20 additions and 8 deletions
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12
ext/misc/spellfix.c
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@ -1295,6 +1295,9 @@ typedef struct Transliteration Transliteration;
struct Transliteration {
unsigned short int cFrom;
unsigned char cTo0, cTo1, cTo2, cTo3;
#ifdef SQLITE_SPELLFIX_5BYTE_MAPPINGS
unsigned char cTo4;
#endif
};
/*
@ -1708,7 +1711,11 @@ static const Transliteration *spellfixFindTranslit(int c, int *pxTop){
** should be freed by the caller.
*/
static unsigned char *transliterate(const unsigned char *zIn, int nIn){
#ifdef SQLITE_SPELLFIX_5BYTE_MAPPINGS
unsigned char *zOut = sqlite3_malloc64( nIn*5 + 1 );
#else
unsigned char *zOut = sqlite3_malloc64( nIn*4 + 1 );
#endif
int c, sz, nOut;
if( zOut==0 ) return 0;
nOut = 0;
@ -1732,6 +1739,11 @@ static unsigned char *transliterate(const unsigned char *zIn, int nIn){
zOut[nOut++] = tbl[x].cTo2;
if( tbl[x].cTo3 ){
zOut[nOut++] = tbl[x].cTo3;
#ifdef SQLITE_SPELLFIX_5BYTE_MAPPINGS
if( tbl[x].cTo4 ){
zOut[nOut++] = tbl[x].cTo4;
}
#endif /* SQLITE_SPELLFIX_5BYTE_MAPPINGS */
}
}
}