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First version of sqlite_stat2 (schema forces exactly 10 samples).

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FossilOrigin-Name: dd96bda2a85c1d94fb4a0bf5f27e2977f7f7e42e
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dan
2009-08-17 17:06:58 +00:00
parent d9c50f7fed
commit 02fa469619
12 changed files with 469 additions and 99 deletions
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24
src/utf.c
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@@ -454,6 +454,30 @@ char *sqlite3Utf16to8(sqlite3 *db, const void *z, int nByte){
return (m.flags & MEM_Dyn)!=0 ? m.z : sqlite3DbStrDup(db, m.z);
}
/*
** Convert a UTF-8 string to the UTF-16 encoding specified by parameter
** enc. A pointer to the new string is returned, and the value of *pnOut
** is set to the length of the returned string in bytes. The call should
** arrange to call sqlite3DbFree() on the returned pointer when it is
** no longer required.
**
** If a malloc failure occurs, NULL is returned and the db.mallocFailed
** flag set.
*/
char *sqlite3Utf8to16(sqlite3 *db, int enc, char *z, int n, int *pnOut){
Mem m;
memset(&m, 0, sizeof(m));
m.db = db;
sqlite3VdbeMemSetStr(&m, z, n, SQLITE_UTF8, SQLITE_STATIC);
if( sqlite3VdbeMemTranslate(&m, enc) ){
assert( db->mallocFailed );
return 0;
}
assert( m.z==m.zMalloc );
*pnOut = m.n;
return m.z;
}
/*
** pZ is a UTF-16 encoded unicode string at least nChar characters long.
** Return the number of bytes in the first nChar unicode characters