SQLite

    free(zPrior);
    zResult = shell_readline(zPrompt);
    if( zResult && *zResult ) shell_add_history(zResult);
#endif
  }
  return zResult;
}
/*
** A variable length string to which one can append text.
*/
typedef struct ShellText ShellText;
struct ShellText {
  char *z;
  int n;
  int nAlloc;
};

/*
** Initialize and destroy a ShellText object
*/
static void initText(ShellText *p){
  memset(p, 0, sizeof(*p));
}
static void freeText(ShellText *p){
  free(p->z);
  initText(p);
}

/* zIn is either a pointer to a NULL-terminated string in memory obtained
** from malloc(), or a NULL pointer. The string pointed to by zAppend is
** added to zIn, and the result returned in memory obtained from malloc().
** zIn, if it was not NULL, is freed.
**
** If the third argument, quote, is not '\0', then it is used as a
** quote character for zAppend.
*/
static void appendText(ShellText *p, char const *zAppend, char quote){
  int len;
  int i;
  int nAppend = strlen30(zAppend);

  len = nAppend+p->n+1;
  if( quote ){
    len += 2;
    for(i=0; i<nAppend; i++){
      if( zAppend[i]==quote ) len++;
    }
  }

  if( p->n+len>=p->nAlloc ){
    p->nAlloc = p->nAlloc*2 + len + 20;
    p->z = realloc(p->z, p->nAlloc);
    if( p->z==0 ){
      memset(p, 0, sizeof(*p));
      return;
    }
  }

  if( quote ){
    char *zCsr = p->z+p->n;
    *zCsr++ = quote;
    for(i=0; i<nAppend; i++){
      *zCsr++ = zAppend[i];
      if( zAppend[i]==quote ) *zCsr++ = quote;
    }
    *zCsr++ = quote;
    p->n = (int)(zCsr - p->z);
    *zCsr = '\0';
  }else{
    memcpy(p->z+p->n, zAppend, nAppend);
    p->n += nAppend;
    p->z[p->n] = '\0';
  }
}

/*
** Attempt to determine if identifier zName needs to be quoted, either
** because it contains non-alphanumeric characters, or because it is an
** SQLite keyword.  Be conservative in this estimate:  When in doubt assume
** that quoting is required.
**
** Return '"' if quoting is required.  Return 0 if no quoting is required.
*/
static char quoteChar(const char *zName){
  /* All SQLite keywords, in alphabetical order */
  static const char *azKeywords[] = {
    "ABORT", "ACTION", "ADD", "AFTER", "ALL", "ALTER", "ANALYZE", "AND", "AS",
    "ASC", "ATTACH", "AUTOINCREMENT", "BEFORE", "BEGIN", "BETWEEN", "BY",
    "CASCADE", "CASE", "CAST", "CHECK", "COLLATE", "COLUMN", "COMMIT",
    "CONFLICT", "CONSTRAINT", "CREATE", "CROSS", "CURRENT_DATE",
    "CURRENT_TIME", "CURRENT_TIMESTAMP", "DATABASE", "DEFAULT", "DEFERRABLE",
    "DEFERRED", "DELETE", "DESC", "DETACH", "DISTINCT", "DROP", "EACH",
    "ELSE", "END", "ESCAPE", "EXCEPT", "EXCLUSIVE", "EXISTS", "EXPLAIN",
    "FAIL", "FOR", "FOREIGN", "FROM", "FULL", "GLOB", "GROUP", "HAVING", "IF",
    "IGNORE", "IMMEDIATE", "IN", "INDEX", "INDEXED", "INITIALLY", "INNER",
    "INSERT", "INSTEAD", "INTERSECT", "INTO", "IS", "ISNULL", "JOIN", "KEY",
    "LEFT", "LIKE", "LIMIT", "MATCH", "NATURAL", "NO", "NOT", "NOTNULL",
    "NULL", "OF", "OFFSET", "ON", "OR", "ORDER", "OUTER", "PLAN", "PRAGMA",
    "PRIMARY", "QUERY", "RAISE", "RECURSIVE", "REFERENCES", "REGEXP",
    "REINDEX", "RELEASE", "RENAME", "REPLACE", "RESTRICT", "RIGHT",
    "ROLLBACK", "ROW", "SAVEPOINT", "SELECT", "SET", "TABLE", "TEMP",
    "TEMPORARY", "THEN", "TO", "TRANSACTION", "TRIGGER", "UNION", "UNIQUE",
    "UPDATE", "USING", "VACUUM", "VALUES", "VIEW", "VIRTUAL", "WHEN", "WHERE",
    "WITH", "WITHOUT",
  };
  int i, lwr, upr, mid, c;
  if( !isalpha((unsigned char)zName[0]) && zName[0]!='_' ) return '"';
  for(i=0; zName[i]; i++){
    if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ) return '"';
  }
  lwr = 0;
  upr = sizeof(azKeywords)/sizeof(azKeywords[0]) - 1;
  while( lwr<=upr ){
    mid = (lwr+upr)/2;
    c = sqlite3_stricmp(azKeywords[mid], zName);
    if( c==0 ) return '"';
    if( c<0 ){
      lwr = mid+1;
    }else{
      upr = mid-1;
    }
  }
  return 0;
}

#if defined(SQLITE_ENABLE_SESSION)
/*
** State information for a single open session
*/
typedef struct OpenSession OpenSession;
struct OpenSession {

** This is the callback routine that the SQLite library
** invokes for each row of a query result.
*/
static int callback(void *pArg, int nArg, char **azArg, char **azCol){
  /* since we don't have type info, call the shell_callback with a NULL value */
  return shell_callback(pArg, nArg, azArg, azCol, NULL);
}


/*
** Set the destination table field of the ShellState structure to
** the name of the table given.  Escape any quote characters in the
** table name.
*/
static void set_table_name(ShellState *p, const char *zName){
  int i, n;
  int cQuote;
  char *z;

  if( p->zDestTable ){
    free(p->zDestTable);
    p->zDestTable = 0;
  }
  if( zName==0 ) return;



  cQuote = quoteChar(zName);
  n = strlen30(zName);


  if( cQuote ) n += 2;
  z = p->zDestTable = malloc( n+1 );
  if( z==0 ){
    raw_printf(stderr,"Error: out of memory\n");
    exit(1);
  }
  n = 0;
  if( cQuote ) z[n++] = cQuote;
  for(i=0; zName[i]; i++){
    z[n++] = zName[i];
    if( zName[i]==cQuote ) z[n++] = cQuote;
  }
  if( cQuote ) z[n++] = cQuote;
  z[n] = 0;

























































}


/*
** Execute a query statement that will generate SQL output.  Print
** the result columns, comma-separated, on a line and then add a
** semicolon terminator to the end of that line.

        break;
      }
    }
  }
  return azCol;
}




/*
** This is a different callback routine used for dumping the database.
** Each row received by this callback consists of a table name,
** the table type ("index" or "table") and SQL to create the table.
** This routine should print text sufficient to recreate the table.
*/
static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){

    sqlite3_free(zIns);
    return 0;
  }else{
    printSchemaLine(p->out, zSql, ";\n");
  }

  if( strcmp(zType, "table")==0 ){
    ShellText sSelect;
    ShellText sTable;
    char **azCol;
    int i;
    char *savedDestTable;
    int savedMode;

    azCol = tableColumnList(p, zTable);
    if( azCol==0 ){
      p->nErr++;
      return 0;
    }

    /* Always quote the table name, even if it appears to be pure ascii,
    ** in case it is a keyword. Ex:  INSERT INTO "table" ... */
    initText(&sTable);
    appendText(&sTable, zTable, quoteChar(zTable));
    /* If preserving the rowid, add a column list after the table name.
    ** In other words:  "INSERT INTO tab(rowid,a,b,c,...) VALUES(...)"
    ** instead of the usual "INSERT INTO tab VALUES(...)".
    */
    if( azCol[0] ){
      appendText(&sTable, "(", 0);
      appendText(&sTable, azCol[0], 0);
      for(i=1; azCol[i]; i++){
        appendText(&sTable, ",", 0);
        appendText(&sTable, azCol[i], quoteChar(azCol[i]));
      }
      appendText(&sTable, ")", 0);
    }

    /* Build an appropriate SELECT statement */
    initText(&sSelect);
    appendText(&sSelect, "SELECT ", 0);
    if( azCol[0] ){
      appendText(&sSelect, azCol[0], 0);
      appendText(&sSelect, ",", 0);
    }
    for(i=1; azCol[i]; i++){
      appendText(&sSelect, azCol[i], quoteChar(azCol[i]));
      if( azCol[i+1] ){
        appendText(&sSelect, ",", 0);
      }
    }
    freeColumnList(azCol);
    appendText(&sSelect, " FROM ", 0);
    appendText(&sSelect, zTable, quoteChar(zTable));

    savedDestTable = p->zDestTable;
    savedMode = p->mode;
    p->zDestTable = sTable.z;
    p->mode = p->cMode = MODE_Insert;
    rc = shell_exec(p->db, sSelect.z, shell_callback, p, 0);
    p->zDestTable = savedDestTable;
    p->mode = savedMode;
    freeText(&sTable);
    freeText(&sSelect);
    if( rc ) p->nErr++;
  }
  return 0;
}

/*
** Run zQuery.  Use dump_callback() as the callback routine so that

    INSERT INTO t3 VALUES(1,null), (2,''), (3,1),
                         (4,2.25), (5,'hello'), (6,x'807f');
  }
  catchcmd test.db {.dump}
} {0 {PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE t1(x);
INSERT INTO t1 VALUES(NULL);
INSERT INTO t1 VALUES('');
INSERT INTO t1 VALUES(1);
INSERT INTO t1 VALUES(2.25);
INSERT INTO t1 VALUES('hello');
INSERT INTO t1 VALUES(X'807f');
CREATE TABLE t3(x,y);
INSERT INTO t3 VALUES(1,NULL);
INSERT INTO t3 VALUES(2,'');
INSERT INTO t3 VALUES(3,1);
INSERT INTO t3 VALUES(4,2.25);
INSERT INTO t3 VALUES(5,'hello');
INSERT INTO t3 VALUES(6,X'807f');
COMMIT;}}

# The --preserve-rowids option to .dump
#
do_test shell1-4.1.1 {
  catchcmd test.db {.dump --preserve-rowids}
} {0 {PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE t1(x);
INSERT INTO t1(rowid,x) VALUES(1,NULL);
INSERT INTO t1(rowid,x) VALUES(2,'');
INSERT INTO t1(rowid,x) VALUES(3,1);
INSERT INTO t1(rowid,x) VALUES(4,2.25);
INSERT INTO t1(rowid,x) VALUES(5,'hello');
INSERT INTO t1(rowid,x) VALUES(6,X'807f');
CREATE TABLE t3(x,y);
INSERT INTO t3(rowid,x,y) VALUES(1,1,NULL);
INSERT INTO t3(rowid,x,y) VALUES(2,2,'');
INSERT INTO t3(rowid,x,y) VALUES(3,3,1);
INSERT INTO t3(rowid,x,y) VALUES(4,4,2.25);
INSERT INTO t3(rowid,x,y) VALUES(5,5,'hello');
INSERT INTO t3(rowid,x,y) VALUES(6,6,X'807f');
COMMIT;}}

# If the table contains an INTEGER PRIMARY KEY, do not record a separate
# rowid column in the output.
#
do_test shell1-4.1.2 {
  db close
  forcedelete test2.db
  sqlite3 db test2.db
  db eval {
    CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
    INSERT INTO t1 VALUES(1,null), (2,''), (3,1),
                         (4,2.25), (5,'hello'), (6,x'807f');
  }
  catchcmd test2.db {.dump --preserve-rowids}
} {0 {PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
INSERT INTO t1 VALUES(1,NULL);
INSERT INTO t1 VALUES(2,'');
INSERT INTO t1 VALUES(3,1);
INSERT INTO t1 VALUES(4,2.25);
INSERT INTO t1 VALUES(5,'hello');
INSERT INTO t1 VALUES(6,X'807f');
COMMIT;}}

# Verify that the table named [table] is correctly quoted and that
# an INTEGER PRIMARY KEY DESC is not an alias for the rowid.
#
do_test shell1-4.1.3 {
  db close
  forcedelete test2.db
  sqlite3 db test2.db
  db eval {
    CREATE TABLE [table](x INTEGER PRIMARY KEY DESC, y);
    INSERT INTO [table] VALUES(1,null), (12,''), (23,1),
                         (34,2.25), (45,'hello'), (56,x'807f');
  }
  catchcmd test2.db {.dump --preserve-rowids}
} {0 {PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE [table](x INTEGER PRIMARY KEY DESC, y);
INSERT INTO "table"(rowid,x,y) VALUES(1,1,NULL);
INSERT INTO "table"(rowid,x,y) VALUES(2,12,'');
INSERT INTO "table"(rowid,x,y) VALUES(3,23,1);
INSERT INTO "table"(rowid,x,y) VALUES(4,34,2.25);
INSERT INTO "table"(rowid,x,y) VALUES(5,45,'hello');
INSERT INTO "table"(rowid,x,y) VALUES(6,56,X'807f');
COMMIT;}}

# Do not record rowids for a WITHOUT ROWID table.  Also check correct quoting
# of table names that contain odd characters.
#
do_test shell1-4.1.4 {
  db close
  forcedelete test2.db
  sqlite3 db test2.db
  db eval {
    CREATE TABLE [ta<>ble](x INTEGER PRIMARY KEY, y) WITHOUT ROWID;
    INSERT INTO [ta<>ble] VALUES(1,null), (12,''), (23,1),
                         (34,2.25), (45,'hello'), (56,x'807f');
  }
  catchcmd test2.db {.dump --preserve-rowids}
} {0 {PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE [ta<>ble](x INTEGER PRIMARY KEY, y) WITHOUT ROWID;
INSERT INTO "ta<>ble" VALUES(1,NULL);
INSERT INTO "ta<>ble" VALUES(12,'');
INSERT INTO "ta<>ble" VALUES(23,1);
INSERT INTO "ta<>ble" VALUES(34,2.25);
INSERT INTO "ta<>ble" VALUES(45,'hello');
INSERT INTO "ta<>ble" VALUES(56,X'807f');
COMMIT;}}

# Do not record rowids if the rowid is inaccessible
#
do_test shell1-4.1.5 {
  db close
  forcedelete test2.db
  sqlite3 db test2.db
  db eval {
    CREATE TABLE t1(_ROWID_,rowid,oid);
    INSERT INTO t1 VALUES(1,null,'alpha'), (12,'',99), (23,1,x'b0b1b2');
  }
  catchcmd test2.db {.dump --preserve-rowids}
} {0 {PRAGMA foreign_keys=OFF;
BEGIN TRANSACTION;
CREATE TABLE t1(_ROWID_,rowid,oid);
INSERT INTO t1 VALUES(1,NULL,'alpha');
INSERT INTO t1 VALUES(12,'',99);
INSERT INTO t1 VALUES(23,1,X'b0b1b2');
COMMIT;}}

# Test the output of ".mode insert"
#
do_test shell1-4.2.1 {
  catchcmd test.db ".mode insert t1\nselect * from t1;"
} {0 {INSERT INTO t1 VALUES(NULL);
INSERT INTO t1 VALUES('');