SQLite

  return SQLITE_OK;
}

/*
** Set the error message for the virtual table associated with cursor
** pCsr to the results of vprintf(zFmt, ...).
*/
static void zipfileTableErr(ZipfileTab *pTab, const char *zFmt, ...){
  va_list ap;
  va_start(ap, zFmt);
  sqlite3_free(pTab->base.zErrMsg);
  pTab->base.zErrMsg = sqlite3_vmprintf(zFmt, ap);
  va_end(ap);
}
static void zipfileCursorErr(ZipfileCsr *pCsr, const char *zFmt, ...){
  va_list ap;
  va_start(ap, zFmt);
  sqlite3_free(pCsr->base.pVtab->zErrMsg);
  pCsr->base.pVtab->zErrMsg = sqlite3_vmprintf(zFmt, ap);
  va_end(ap);
}

/*
** Read nRead bytes of data from offset iOff of file pFile into buffer
** aRead[]. Return SQLITE_OK if successful, or an SQLite error code

  int bInMemory = 0;              /* True for an in-memory zipfile */

  zipfileResetCursor(pCsr);

  if( pTab->zFile ){
    zFile = pTab->zFile;
  }else if( idxNum==0 ){
    zipfileCursorErr(pCsr, "zipfile() function requires an argument");
    return SQLITE_ERROR;
  }else if( sqlite3_value_type(argv[0])==SQLITE_BLOB ){
    const u8 *aBlob = (const u8*)sqlite3_value_blob(argv[0]);
    int nBlob = sqlite3_value_bytes(argv[0]);
    assert( pTab->pFirstEntry==0 );
    rc = zipfileLoadDirectory(pTab, aBlob, nBlob);
    pCsr->pFreeEntry = pTab->pFirstEntry;
    pTab->pFirstEntry = pTab->pLastEntry = 0;
    if( rc!=SQLITE_OK ) return rc;
    bInMemory = 1;
  }else{
    zFile = (const char*)sqlite3_value_text(argv[0]);
  }

  if( 0==pTab->pWriteFd && 0==bInMemory ){
    pCsr->pFile = fopen(zFile, "rb");
    if( pCsr->pFile==0 ){
      zipfileCursorErr(pCsr, "cannot open file: %s", zFile);
      rc = SQLITE_ERROR;
    }else{
      rc = zipfileReadEOCD(pTab, 0, 0, pCsr->pFile, &pCsr->eocd);
      if( rc==SQLITE_OK ){
        if( pCsr->eocd.nEntry==0 ){
          pCsr->bEof = 1;
        }else{

      if( z[i]==zTemplate[i] ) mode |= 1 << (9-i);
      else if( z[i]!='-' ) goto parse_error;
    }
  }
  if( ((mode & S_IFDIR)==0)==bIsDir ){
    /* The "mode" attribute is a directory, but data has been specified.
    ** Or vice-versa - no data but "mode" is a file or symlink.  */
    *pzErr = sqlite3_mprintf("zipfile: mode does not match data");
    return SQLITE_CONSTRAINT;
  }
  *pMode = mode;
  return SQLITE_OK;

 parse_error:
  *pzErr = sqlite3_mprintf("zipfile: parse error in mode: %s", z);

      }
      assert( pOld->pNext );
    }
  }

  if( nVal>1 ){
    /* Check that "sz" and "rawdata" are both NULL: */
    if( sqlite3_value_type(apVal[5])!=SQLITE_NULL ){
      zipfileTableErr(pTab, "sz must be NULL");
      rc = SQLITE_CONSTRAINT;
    }
    if( sqlite3_value_type(apVal[6])!=SQLITE_NULL ){

      zipfileTableErr(pTab, "rawdata must be NULL"); 
      rc = SQLITE_CONSTRAINT;
    }

    if( rc==SQLITE_OK ){
      if( sqlite3_value_type(apVal[7])==SQLITE_NULL ){
        /* data=NULL. A directory */
        bIsDir = 1;
      }else{
        /* Value specified for "data", and possibly "method". This must be
        ** a regular file or a symlink. */
        const u8 *aIn = sqlite3_value_blob(apVal[7]);
        int nIn = sqlite3_value_bytes(apVal[7]);
        int bAuto = sqlite3_value_type(apVal[8])==SQLITE_NULL;

        iMethod = sqlite3_value_int(apVal[8]);
        sz = nIn;
        pData = aIn;
        nData = nIn;
        if( iMethod!=0 && iMethod!=8 ){
          zipfileTableErr(pTab, "unknown compression method: %d", iMethod);
          rc = SQLITE_CONSTRAINT;
        }else{
          if( bAuto || iMethod ){
            int nCmp;
            rc = zipfileDeflate(aIn, nIn, &pFree, &nCmp, &pTab->base.zErrMsg);
            if( rc==SQLITE_OK ){
              if( iMethod || nCmp<nIn ){

    }

    /* Check that we're not inserting a duplicate entry */
    if( pOld==0 && rc==SQLITE_OK ){
      ZipfileEntry *p;
      for(p=pTab->pFirstEntry; p; p=p->pNext){
        if( zipfileComparePath(p->cds.zFile, zPath, nPath)==0 ){
          zipfileTableErr(pTab, "duplicate name: \"%s\"", zPath);
          rc = SQLITE_CONSTRAINT;
          break;
        }
      }
    }

    if( rc==SQLITE_OK ){

  5 data {} 0 {} 0
  6 method {} 0 {} 0
}

do_catchsql_test 1.1.0.1 {
  INSERT INTO zz(name, mode, mtime, sz, rawdata, method) 
  VALUES('f.txt', '-rw-r--r--', 1000000000, 5, 'abcde', 0);
} {1 {rawdata must be NULL}}
do_catchsql_test 1.1.0.2 {
  INSERT INTO zz(name, mtime, sz, data, method) 
  VALUES('g.txt', 1000000002, 5, '12345', 0);
} {1 {sz must be NULL}}
do_catchsql_test 1.1.0.3 {
  INSERT INTO zz(name, mtime, rawdata, method) 
  VALUES('g.txt', 1000000002, '12345', 0);
} {1 {rawdata must be NULL}}
do_catchsql_test 1.1.0.4 {
  INSERT INTO zz(name, data, method) 
  VALUES('g.txt', '12345', 7);
} {1 {unknown compression method: 7}}

do_execsql_test 1.1.1 {
  INSERT INTO zz(name, mode, mtime, data, method) 
  VALUES('f.txt', '-rw-r--r--', 1000000000, 'abcde', 0);
}
do_execsql_test 1.1.2 {
  INSERT INTO zz(name, mode, mtime, data, method) 

  blue.txt/ 16877 1000000000 {} 0
  h.txt 33189 1000000004 aaaaaaaaaabbbbbbbbbb 8
  i.txt 33188 4 zxcvb 0
}

do_catchsql_test 1.6.7 {
  UPDATE zz SET data=NULL WHERE name='i.txt'
} {1 {zipfile: mode does not match data}}
do_execsql_test 1.6.8 {
  SELECT name, mode, mtime, data, method FROM zipfile('test.zip');
} {
  blue.txt/ 16877 1000000000 {} 0
  h.txt 33189 1000000004 aaaaaaaaaabbbbbbbbbb 8
  i.txt 33188 4 zxcvb 0
}

foreach {tn fname} {
  1 dir1
  2 file1
  3 dir1/file2
} {
  do_catchsql_test 3.1.$tn.0 {
    INSERT INTO x1(name, data) VALUES($fname, NULL);
  } [list 1 "duplicate name: \"$fname/\""]
  do_catchsql_test 3.1.$tn.1 {
    INSERT INTO x1(name, data) VALUES($fname || '/', NULL);
  } [list 1 "duplicate name: \"$fname/\""]
  do_catchsql_test 3.1.$tn.2 {
    INSERT INTO x1(name, data) VALUES($fname, 'abcd');
  } [list 1 "duplicate name: \"$fname\""]
}

do_catchsql_test 3.2 {
  SELECT rowid FROM x1
} {1 {no such column: rowid}}

#-------------------------------------------------------------------------

    VALUES('dir3//') UNION ALL
    VALUES('dir4///') UNION ALL
    VALUES('/') 
  )
  SELECT name FROM zipfile((SELECT zipfile(nm, NULL) FROM src))
} {dir1/ dir2/ dir3/ dir4/ /}
finish_test