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/*
** 2001 September 15
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing all sorts of SQLite interfaces. This code
** is not included in the SQLite library. It is used for automated
** testing of the SQLite library.
*/
#include "sqliteInt.h"
#if SQLITE_OS_WIN
# include "os_win.h"
#endif
#include "vdbeInt.h"
#if defined(INCLUDE_SQLITE_TCL_H)
# include "sqlite_tcl.h"
#else
# include "tcl.h"
#endif
#include <stdlib.h>
#include <string.h>
/*
** This is a copy of the first part of the SqliteDb structure in
** tclsqlite.c. We need it here so that the get_sqlite_pointer routine
** can extract the sqlite3* pointer from an existing Tcl SQLite
** connection.
*/
struct SqliteDb {
sqlite3 *db;
};
/*
** Convert text generated by the "%p" conversion format back into
** a pointer.
*/
static int testHexToInt(int h){
if( h>='0' && h<='9' ){
return h - '0';
}else if( h>='a' && h<='f' ){
return h - 'a' + 10;
}else{
assert( h>='A' && h<='F' );
return h - 'A' + 10;
}
}
void *sqlite3TestTextToPtr(const char *z){
void *p;
u64 v;
u32 v2;
if( z[0]=='0' && z[1]=='x' ){
z += 2;
}
v = 0;
while( *z ){
v = (v<<4) + testHexToInt(*z);
z++;
}
if( sizeof(p)==sizeof(v) ){
memcpy(&p, &v, sizeof(p));
}else{
assert( sizeof(p)==sizeof(v2) );
v2 = (u32)v;
memcpy(&p, &v2, sizeof(p));
}
return p;
}
/*
** A TCL command that returns the address of the sqlite* pointer
** for an sqlite connection instance. Bad things happen if the
** input is not an sqlite connection.
*/
static int SQLITE_TCLAPI get_sqlite_pointer(
void * clientData,
Tcl_Interp *interp,
int objc,
Tcl_Obj *CONST objv[]
){
struct SqliteDb *p;
Tcl_CmdInfo cmdInfo;
char zBuf[100];
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 1, objv, "SQLITE-CONNECTION");
return TCL_ERROR;
}
if( !Tcl_GetCommandInfo(interp, Tcl_GetString(objv[1]), &cmdInfo) ){
Tcl_AppendResult(interp, "command not found: ",
Tcl_GetString(objv[1]), (char*)0);
return TCL_ERROR;
}
p = (struct SqliteDb*)cmdInfo.objClientData;
sqlite3_snprintf(sizeof(zBuf), zBuf, "%p", p->db);
Tcl_AppendResult(interp, zBuf, 0);
return TCL_OK;
}
/*
** Decode a pointer to an sqlite3 object.
*/
int getDbPointer(Tcl_Interp *interp, const char *zA, sqlite3 **ppDb){
struct SqliteDb *p;
Tcl_CmdInfo cmdInfo;
if( Tcl_GetCommandInfo(interp, zA, &cmdInfo) ){
p = (struct SqliteDb*)cmdInfo.objClientData;
*ppDb = p->db;
}else{
*ppDb = (sqlite3*)sqlite3TestTextToPtr(zA);
}
return TCL_OK;
}
#if SQLITE_OS_WIN
/*
** Decode a Win32 HANDLE object.
*/
int getWin32Handle(Tcl_Interp *interp, const char *zA, LPHANDLE phFile){
*phFile = (HANDLE)sqlite3TestTextToPtr(zA);
return TCL_OK;
}
#endif
extern const char *sqlite3ErrName(int);
#define t1ErrorName sqlite3ErrName
/*
** Convert an sqlite3_stmt* into an sqlite3*. This depends on the
** fact that the sqlite3* is the first field in the Vdbe structure.
*/
#define StmtToDb(X) sqlite3_db_handle(X)
/*
** Check a return value to make sure it agrees with the results
** from sqlite3_errcode.
*/
int sqlite3TestErrCode(Tcl_Interp *interp, sqlite3 *db, int rc){
if( sqlite3_threadsafe()==0 && rc!=SQLITE_MISUSE && rc!=SQLITE_OK
&& sqlite3_errcode(db)!=rc ){
char zBuf[200];
int r2 = sqlite3_errcode(db);
sqlite3_snprintf(sizeof(zBuf), zBuf,
"error code %s (%d) does not match sqlite3_errcode %s (%d)",
t1ErrorName(rc), rc, t1ErrorName(r2), r2);
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, zBuf, 0);
return 1;
}
return 0;
}
/*
** Decode a pointer to an sqlite3_stmt object.
*/
static int getStmtPointer(
Tcl_Interp *interp,
const char *zArg,
sqlite3_stmt **ppStmt
){
*ppStmt = (sqlite3_stmt*)sqlite3TestTextToPtr(zArg);
return TCL_OK;
}
/*
** Generate a text representation of a pointer that can be understood
** by the getDbPointer and getVmPointer routines above.
**
** The problem is, on some machines (Solaris) if you do a printf with
** "%p" you cannot turn around and do a scanf with the same "%p" and
** get your pointer back. You have to prepend a "0x" before it will
** work. Or at least that is what is reported to me (drh). But this
** behavior varies from machine to machine. The solution used her is
** to test the string right after it is generated to see if it can be
** understood by scanf, and if not, try prepending an "0x" to see if
** that helps. If nothing works, a fatal error is generated.
*/
int sqlite3TestMakePointerStr(Tcl_Interp *interp, char *zPtr, void *p){
sqlite3_snprintf(100, zPtr, "%p", p);
return TCL_OK;
}
/*
** The callback routine for sqlite3_exec_printf().
*/
static int exec_printf_cb(void *pArg, int argc, char **argv, char **name){
Tcl_DString *str = (Tcl_DString*)pArg;
int i;
if( Tcl_DStringLength(str)==0 ){
for(i=0; i<argc; i++){
Tcl_DStringAppendElement(str, name[i] ? name[i] : "NULL");
}
}
for(i=0; i<argc; i++){
Tcl_DStringAppendElement(str, argv[i] ? argv[i] : "NULL");
}
return 0;
}
/*
** The I/O tracing callback.
*/
#if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE)
static FILE *iotrace_file = 0;
static void io_trace_callback(const char *zFormat, ...){
va_list ap;
va_start(ap, zFormat);
vfprintf(iotrace_file, zFormat, ap);
va_end(ap);
fflush(iotrace_file);
}
#endif
/*
** Usage: io_trace FILENAME
**
** Turn I/O tracing on or off. If FILENAME is not an empty string,
** I/O tracing begins going into FILENAME. If FILENAME is an empty
** string, I/O tracing is turned off.
*/
static int SQLITE_TCLAPI test_io_trace(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
#if !defined(SQLITE_OMIT_TRACE) && defined(SQLITE_ENABLE_IOTRACE)
if( argc!=2 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" FILENAME\"", 0);
return TCL_ERROR;
}
if( iotrace_file ){
if( iotrace_file!=stdout && iotrace_file!=stderr ){
fclose(iotrace_file);
}
iotrace_file = 0;
sqlite3IoTrace = 0;
}
if( argv[1][0] ){
if( strcmp(argv[1],"stdout")==0 ){
iotrace_file = stdout;
}else if( strcmp(argv[1],"stderr")==0 ){
iotrace_file = stderr;
}else{
iotrace_file = fopen(argv[1], "w");
}
sqlite3IoTrace = io_trace_callback;
}
#endif
return TCL_OK;
}
/*
** Usage: clang_sanitize_address
**
** Returns true if the program was compiled using clang with the
** -fsanitize=address switch on the command line. False otherwise.
**
** Also return true if the OMIT_MISUSE environment variable exists.
*/
static int SQLITE_TCLAPI clang_sanitize_address(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
int res = 0;
#if defined(__has_feature)
# if __has_feature(address_sanitizer)
res = 1;
# endif
#endif
#ifdef __SANITIZE_ADDRESS__
res = 1;
#endif
if( res==0 && getenv("OMIT_MISUSE")!=0 ) res = 1;
Tcl_SetObjResult(interp, Tcl_NewIntObj(res));
return TCL_OK;
}
/*
** Usage: sqlite3_exec_printf DB FORMAT STRING
**
** Invoke the sqlite3_exec_printf() interface using the open database
** DB. The SQL is the string FORMAT. The format string should contain
** one %s or %q. STRING is the value inserted into %s or %q.
*/
static int SQLITE_TCLAPI test_exec_printf(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
Tcl_DString str;
int rc;
char *zErr = 0;
char *zSql;
char zBuf[30];
if( argc!=4 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB FORMAT STRING", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
Tcl_DStringInit(&str);
zSql = sqlite3_mprintf(argv[2], argv[3]);
rc = sqlite3_exec(db, zSql, exec_printf_cb, &str, &zErr);
sqlite3_free(zSql);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", rc);
Tcl_AppendElement(interp, zBuf);
Tcl_AppendElement(interp, rc==SQLITE_OK ? Tcl_DStringValue(&str) : zErr);
Tcl_DStringFree(&str);
if( zErr ) sqlite3_free(zErr);
if( sqlite3TestErrCode(interp, db, rc) ) return TCL_ERROR;
return TCL_OK;
}
/*
** Usage: sqlite3_exec_hex DB HEX
**
** Invoke the sqlite3_exec() on a string that is obtained by translating
** HEX into ASCII. Most characters are translated as is. %HH becomes
** a hex character.
*/
static int SQLITE_TCLAPI test_exec_hex(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
Tcl_DString str;
int rc, i, j;
char *zErr = 0;
char *zHex;
char zSql[501];
char zBuf[30];
if( argc!=3 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB HEX", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
zHex = argv[2];
for(i=j=0; i<(sizeof(zSql)-1) && zHex[j]; i++, j++){
if( zHex[j]=='%' && zHex[j+2] && zHex[j+2] ){
zSql[i] = (testHexToInt(zHex[j+1])<<4) + testHexToInt(zHex[j+2]);
j += 2;
}else{
zSql[i] = zHex[j];
}
}
zSql[i] = 0;
Tcl_DStringInit(&str);
rc = sqlite3_exec(db, zSql, exec_printf_cb, &str, &zErr);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", rc);
Tcl_AppendElement(interp, zBuf);
Tcl_AppendElement(interp, rc==SQLITE_OK ? Tcl_DStringValue(&str) : zErr);
Tcl_DStringFree(&str);
if( zErr ) sqlite3_free(zErr);
if( sqlite3TestErrCode(interp, db, rc) ) return TCL_ERROR;
return TCL_OK;
}
/*
** Usage: db_enter DB
** db_leave DB
**
** Enter or leave the mutex on a database connection.
*/
static int SQLITE_TCLAPI db_enter(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
if( argc!=2 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
sqlite3_mutex_enter(db->mutex);
return TCL_OK;
}
static int SQLITE_TCLAPI db_leave(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
if( argc!=2 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
sqlite3_mutex_leave(db->mutex);
return TCL_OK;
}
/*
** Usage: sqlite3_exec DB SQL
**
** Invoke the sqlite3_exec interface using the open database DB
*/
static int SQLITE_TCLAPI test_exec(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
Tcl_DString str;
int rc;
char *zErr = 0;
char *zSql;
int i, j;
char zBuf[30];
if( argc!=3 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB SQL", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
Tcl_DStringInit(&str);
zSql = sqlite3_mprintf("%s", argv[2]);
for(i=j=0; zSql[i];){
if( zSql[i]=='%' ){
zSql[j++] = (testHexToInt(zSql[i+1])<<4) + testHexToInt(zSql[i+2]);
i += 3;
}else{
zSql[j++] = zSql[i++];
}
}
zSql[j] = 0;
rc = sqlite3_exec(db, zSql, exec_printf_cb, &str, &zErr);
sqlite3_free(zSql);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", rc);
Tcl_AppendElement(interp, zBuf);
Tcl_AppendElement(interp, rc==SQLITE_OK ? Tcl_DStringValue(&str) : zErr);
Tcl_DStringFree(&str);
if( zErr ) sqlite3_free(zErr);
if( sqlite3TestErrCode(interp, db, rc) ) return TCL_ERROR;
return TCL_OK;
}
/*
** Usage: sqlite3_exec_nr DB SQL
**
** Invoke the sqlite3_exec interface using the open database DB. Discard
** all results
*/
static int SQLITE_TCLAPI test_exec_nr(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
int rc;
char *zErr = 0;
if( argc!=3 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB SQL", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
rc = sqlite3_exec(db, argv[2], 0, 0, &zErr);
if( sqlite3TestErrCode(interp, db, rc) ) return TCL_ERROR;
return TCL_OK;
}
/*
** Usage: sqlite3_mprintf_z_test SEPARATOR ARG0 ARG1 ...
**
** Test the %z format of sqlite_mprintf(). Use multiple mprintf() calls to
** concatenate arg0 through argn using separator as the separator.
** Return the result.
*/
static int SQLITE_TCLAPI test_mprintf_z(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
char *zResult = 0;
int i;
for(i=2; i<argc && (i==2 || zResult); i++){
zResult = sqlite3_mprintf("%z%s%s", zResult, argv[1], argv[i]);
}
Tcl_AppendResult(interp, zResult, 0);
sqlite3_free(zResult);
return TCL_OK;
}
/*
** Usage: sqlite3_mprintf_n_test STRING
**
** Test the %n format of sqlite_mprintf(). Return the length of the
** input string.
*/
static int SQLITE_TCLAPI test_mprintf_n(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
char *zStr;
int n = 0;
zStr = sqlite3_mprintf("%s%n", argv[1], &n);
sqlite3_free(zStr);
Tcl_SetObjResult(interp, Tcl_NewIntObj(n));
return TCL_OK;
}
/*
** Usage: sqlite3_snprintf_int SIZE FORMAT INT
**
** Test the of sqlite3_snprintf() routine. SIZE is the size of the
** output buffer in bytes. The maximum size is 100. FORMAT is the
** format string. INT is a single integer argument. The FORMAT
** string must require no more than this one integer argument. If
** You pass in a format string that requires more than one argument,
** bad things will happen.
*/
static int SQLITE_TCLAPI test_snprintf_int(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
char zStr[100];
int n = atoi(argv[1]);
const char *zFormat = argv[2];
int a1 = atoi(argv[3]);
if( n>sizeof(zStr) ) n = sizeof(zStr);
sqlite3_snprintf(sizeof(zStr), zStr, "abcdefghijklmnopqrstuvwxyz");
sqlite3_snprintf(n, zStr, zFormat, a1);
Tcl_AppendResult(interp, zStr, 0);
return TCL_OK;
}
#ifndef SQLITE_OMIT_GET_TABLE
/*
** Usage: sqlite3_get_table_printf DB FORMAT STRING ?--no-counts?
**
** Invoke the sqlite3_get_table_printf() interface using the open database
** DB. The SQL is the string FORMAT. The format string should contain
** one %s or %q. STRING is the value inserted into %s or %q.
*/
static int SQLITE_TCLAPI test_get_table_printf(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
Tcl_DString str;
int rc;
char *zErr = 0;
int nRow = 0, nCol = 0;
char **aResult;
int i;
char zBuf[30];
char *zSql;
int resCount = -1;
if( argc==5 ){
if( Tcl_GetInt(interp, argv[4], &resCount) ) return TCL_ERROR;
}
if( argc!=4 && argc!=5 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" DB FORMAT STRING ?COUNT?", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
Tcl_DStringInit(&str);
zSql = sqlite3_mprintf(argv[2],argv[3]);
if( argc==5 ){
rc = sqlite3_get_table(db, zSql, &aResult, 0, 0, &zErr);
}else{
rc = sqlite3_get_table(db, zSql, &aResult, &nRow, &nCol, &zErr);
resCount = (nRow+1)*nCol;
}
sqlite3_free(zSql);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", rc);
Tcl_AppendElement(interp, zBuf);
if( rc==SQLITE_OK ){
if( argc==4 ){
sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", nRow);
Tcl_AppendElement(interp, zBuf);
sqlite3_snprintf(sizeof(zBuf), zBuf, "%d", nCol);
Tcl_AppendElement(interp, zBuf);
}
for(i=0; i<resCount; i++){
Tcl_AppendElement(interp, aResult[i] ? aResult[i] : "NULL");
}
}else{
Tcl_AppendElement(interp, zErr);
}
sqlite3_free_table(aResult);
if( zErr ) sqlite3_free(zErr);
if( sqlite3TestErrCode(interp, db, rc) ) return TCL_ERROR;
return TCL_OK;
}
#endif /* SQLITE_OMIT_GET_TABLE */
/*
** Usage: sqlite3_last_insert_rowid DB
**
** Returns the integer ROWID of the most recent insert.
*/
static int SQLITE_TCLAPI test_last_rowid(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
char zBuf[30];
if( argc!=2 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " DB\"", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", sqlite3_last_insert_rowid(db));
Tcl_AppendResult(interp, zBuf, 0);
return SQLITE_OK;
}
/*
** Usage: sqlite3_key DB KEY
**
** Set the codec key.
*/
static int SQLITE_TCLAPI test_key(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
sqlite3 *db;
const char *zKey;
int nKey;
if( argc!=3 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" FILENAME\"", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
zKey = argv[2];
nKey = strlen(zKey);
sqlite3_key(db, zKey, nKey);
#endif
return TCL_OK;
}
/*
** Usage: sqlite3_rekey DB KEY
**
** Change the codec key.
*/
static int SQLITE_TCLAPI test_rekey(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
#ifdef SQLITE_HAS_CODEC
sqlite3 *db;
const char *zKey;
int nKey;
if( argc!=3 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" FILENAME\"", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
zKey = argv[2];
nKey = strlen(zKey);
sqlite3_rekey(db, zKey, nKey);
#endif
return TCL_OK;
}
/*
** Usage: sqlite3_close DB
**
** Closes the database opened by sqlite3_open.
*/
static int SQLITE_TCLAPI sqlite_test_close(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
int rc;
if( argc!=2 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" FILENAME\"", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
rc = sqlite3_close(db);
Tcl_SetResult(interp, (char *)t1ErrorName(rc), TCL_STATIC);
return TCL_OK;
}
/*
** Usage: sqlite3_close_v2 DB
**
** Closes the database opened by sqlite3_open.
*/
static int SQLITE_TCLAPI sqlite_test_close_v2(
void *NotUsed,
Tcl_Interp *interp, /* The TCL interpreter that invoked this command */
int argc, /* Number of arguments */
char **argv /* Text of each argument */
){
sqlite3 *db;
int rc;
if( argc!=2 ){
Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" FILENAME\"", 0);
return TCL_ERROR;
}
if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
rc = sqlite3_close_v2(db);
Tcl_SetResult(interp, (char *)t1ErrorName(rc), TCL_STATIC);
return TCL_OK;
}
/*
** Implementation of the x_coalesce() function.
** Return the first argument non-NULL argument.
*/
static void t1_ifnullFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
int i;
for(i=0; i<argc; i++){
if( SQLITE_NULL!=sqlite3_value_type(argv[i]) ){
int n = sqlite3_value_bytes(argv[i]);
sqlite3_result_text(context, (char*)sqlite3_value_text(argv[i]),
n, SQLITE_TRANSIENT);
break;
}
}
}
/*
** These are test functions. hex8() interprets its argument as
** UTF8 and returns a hex encoding. hex16le() interprets its argument
** as UTF16le and returns a hex encoding.
*/
static void hex8Func(sqlite3_context *p, int argc, sqlite3_value **argv){
const unsigned char *z;
int i;
char zBuf[200];
z = sqlite3_value_text(argv[0]);
for(i=0; i<sizeof(zBuf)/2 - 2 && z[i]; i++){
sqlite3_snprintf(sizeof(zBuf)-i*2, &zBuf[i*2], "%02x", z[i]);
}
zBuf[i*2] = 0;
sqlite3_result_text(p, (char*)zBuf, -1, SQLITE_TRANSIENT);
}
#ifndef SQLITE_OMIT_UTF16
static void hex16Func(sqlite3_context *p, int argc, sqlite3_value **argv){
const unsigned short int *z;
int i;
char zBuf[400];
z = sqlite3_value_text16(argv[0]);
for(i=0; i<sizeof(zBuf)/4 - 4 && z[i]; i++){
sqlite3_snprintf(sizeof(zBuf)-i*4, &zBuf[i*4],"%04x", z[i]&0xff);
}
zBuf[i*4] = 0;
sqlite3_result_text(p, (char*)zBuf, -1, SQLITE_TRANSIENT);
}
#endif
/*
** A structure into which to accumulate text.
*/
struct dstr {
int nAlloc; /* Space allocated */
int nUsed; /* Space used */
char *z; /* The space */
};
/*
** Append text to a dstr
*/
static void dstrAppend(struct dstr *p, const char *z, int divider){
int n = (int)strlen(z);
if( p->nUsed + n + 2 > p->nAlloc ){
char *zNew;
p->nAlloc = p->nAlloc*2 + n + 200;
zNew = sqlite3_realloc(p->z, p->nAlloc);
if( zNew==0 ){
sqlite3_free(p->z);
memset(p, 0, sizeof(*p));
return;
}
p->z = zNew;
}
if( divider && p->nUsed>0 ){
p->z[p->nUsed++] = divider;
}
memcpy(&p->z[p->nUsed], z, n+1);
p->nUsed += n;
}
/*
** Invoked for each callback from sqlite3ExecFunc
*/
static int execFuncCallback(void *pData, int argc, char **argv, char **NotUsed){
struct dstr *p = (struct dstr*)pData;
int i;
for(i=0; i<argc; i++){
if( argv[i]==0 ){
dstrAppend(p, "NULL", ' ');
}else{
dstrAppend(p, argv[i], ' ');
}
}
return 0;
}
/*
** Implementation of the x_sqlite_exec() function. This function takes
** a single argument and attempts to execute that argument as SQL code.
** This is illegal and should set the SQLITE_MISUSE flag on the database.
**
** 2004-Jan-07: We have changed this to make it legal to call sqlite3_exec()
** from within a function call.
**
** This routine simulates the effect of having two threads attempt to
** use the same database at the same time.
*/
static void sqlite3ExecFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
struct dstr x;
memset(&x, 0, sizeof(x));
(void)sqlite3_exec((sqlite3*)sqlite3_user_data(context),
(char*)sqlite3_value_text(argv[0]),
execFuncCallback, &x, 0);
sqlite3_result_text(context, x.z, x.nUsed, SQLITE_TRANSIENT);
sqlite3_free(x.z);
}
/*
** Implementation of tkt2213func(), a scalar function that takes exactly
** one argument. It has two interesting features:
**
** * It calls sqlite3_value_text() 3 times on the argument sqlite3_value*.
** If the three pointers returned are not the same an SQL error is raised.
**
** * Otherwise it returns a copy of the text representation of its
** argument in such a way as the VDBE representation is a Mem* cell
** with the MEM_Term flag clear.
**
** Ticket #2213 can therefore be tested by evaluating the following
** SQL expression:
**
** tkt2213func(tkt2213func('a string'));
*/
static void tkt2213Function(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
int nText;
unsigned char const *zText1;
unsigned char const *zText2;
unsigned char const *zText3;
nText = sqlite3_value_bytes(argv[0]);
zText1 = sqlite3_value_text(argv[0]);
zText2 = sqlite3_value_text(argv[0]);
zText3 = sqlite3_value_text(argv[0]);
if( zText1!=zText2 || zText2!=zText3 ){
sqlite3_result_error(context, "tkt2213 is not fixed", -1);
}else{
char *zCopy = (char *)sqlite3_malloc(nText);
memcpy(zCopy, zText1, nText);
sqlite3_result_text(context, zCopy, nText, sqlite3_free);
}
}
/*
** The following SQL function takes 4 arguments. The 2nd and
** 4th argument must be one of these strings: 'text', 'text16',
** or 'blob' corresponding to API functions
**
** sqlite3_value_text()
** sqlite3_value_text16()
** sqlite3_value_blob()
**
** The third argument is a string, either 'bytes' or 'bytes16' or 'noop',
** corresponding to APIs:
**
** sqlite3_value_bytes()
** sqlite3_value_bytes16()
** noop
**
** The APIs designated by the 2nd through 4th arguments are applied
** to the first argument in order. If the pointers returned by the
** second and fourth are different, this routine returns 1. Otherwise,
** this routine returns 0.
**
** This function is used to test to see when returned pointers from
** the _text(), _text16() and _blob() APIs become invalidated.
*/
static void ptrChngFunction(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
const void *p1, *p2;
const char *zCmd;
if( argc!=4 ) return;
zCmd = (const char*)sqlite3_value_text(argv[1]);
if( zCmd==0 ) return;
if( strcmp(zCmd,"text")==0 ){
p1 = (const void*)sqlite3_value_text(argv[0]);
#ifndef SQLITE_OMIT_UTF16
}else if( strcmp(zCmd, "text16")==0 ){
p1 = (const void*)sqlite3_value_text16(argv[0]);
#endif
}else if( strcmp(zCmd, "blob")==0 ){
p1 = (const void*)sqlite3_value_blob(argv[0]);
}else{
return;
}
zCmd = (const char*)sqlite3_value_text(argv[2]);
if( zCmd==0 ) return;
if( strcmp(zCmd,"bytes")==0 ){
sqlite3_value_bytes(argv[0]);
#ifndef SQLITE_OMIT_UTF16
}else if( strcmp(zCmd, "bytes16")==0 ){
sqlite3_value_bytes16(argv[0]);
#endif
}else if( strcmp(zCmd, "noop")==0 ){
/* do nothing */
}else{
return;
}
zCmd = (const char*)sqlite3_value_text(argv[3]);
if( zCmd==0 ) return;
if( strcmp(zCmd,"text")==0 ){
p2 = (const void*)sqlite3_value_text(argv[0]);
#ifndef SQLITE_OMIT_UTF16
}else if( strcmp(zCmd, "text16")==0 ){
p2 = (const void*)sqlite3_value_text16(argv[0]);
#endif
}else if( strcmp(zCmd, "blob")==0 ){
p2 = (const void*)sqlite3_value_blob(argv[0]);
}else{
return;
}
sqlite3_result_int(context, p1!=p2);
}
/*
** This SQL function returns a different answer each time it is called, even if
** the arguments are the same.
*/
static void nondeterministicFunction(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
static int cnt = 0;
sqlite3_result_int(context, cnt++);
}