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gerrit.openfyde.cn / chromium.googlesource.com / chromium / deps / sqlite / bbce338412255f7aa5539c2bc6575f954d1ccae4 / . / src / tclsqlite.c
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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.
**
*************************************************************************
** A TCL Interface to SQLite. Append this file to sqlite3.c and
** compile the whole thing to build a TCL-enabled version of SQLite.
**
** $Id: tclsqlite.c,v 1.228 2008/10/09 14:45:26 drh Exp $
*/
#include "tcl.h"
#include <errno.h>
/*
** Some additional include files are needed if this file is not
** appended to the amalgamation.
*/
#ifndef SQLITE_AMALGAMATION
# include "sqliteInt.h"
# include <stdlib.h>
# include <string.h>
# include <assert.h>
# include <ctype.h>
#endif
/*
* Windows needs to know which symbols to export. Unix does not.
* BUILD_sqlite should be undefined for Unix.
*/
#ifdef BUILD_sqlite
#undef TCL_STORAGE_CLASS
#define TCL_STORAGE_CLASS DLLEXPORT
#endif /* BUILD_sqlite */
#define NUM_PREPARED_STMTS 10
#define MAX_PREPARED_STMTS 100
/*
** If TCL uses UTF-8 and SQLite is configured to use iso8859, then we
** have to do a translation when going between the two. Set the
** UTF_TRANSLATION_NEEDED macro to indicate that we need to do
** this translation.
*/
#if defined(TCL_UTF_MAX) && !defined(SQLITE_UTF8)
# define UTF_TRANSLATION_NEEDED 1
#endif
/*
** New SQL functions can be created as TCL scripts. Each such function
** is described by an instance of the following structure.
*/
typedef struct SqlFunc SqlFunc;
struct SqlFunc {
Tcl_Interp *interp; /* The TCL interpret to execute the function */
Tcl_Obj *pScript; /* The Tcl_Obj representation of the script */
int useEvalObjv; /* True if it is safe to use Tcl_EvalObjv */
char *zName; /* Name of this function */
SqlFunc *pNext; /* Next function on the list of them all */
};
/*
** New collation sequences function can be created as TCL scripts. Each such
** function is described by an instance of the following structure.
*/
typedef struct SqlCollate SqlCollate;
struct SqlCollate {
Tcl_Interp *interp; /* The TCL interpret to execute the function */
char *zScript; /* The script to be run */
SqlCollate *pNext; /* Next function on the list of them all */
};
/*
** Prepared statements are cached for faster execution. Each prepared
** statement is described by an instance of the following structure.
*/
typedef struct SqlPreparedStmt SqlPreparedStmt;
struct SqlPreparedStmt {
SqlPreparedStmt *pNext; /* Next in linked list */
SqlPreparedStmt *pPrev; /* Previous on the list */
sqlite3_stmt *pStmt; /* The prepared statement */
int nSql; /* chars in zSql[] */
const char *zSql; /* Text of the SQL statement */
};
typedef struct IncrblobChannel IncrblobChannel;
/*
** There is one instance of this structure for each SQLite database
** that has been opened by the SQLite TCL interface.
*/
typedef struct SqliteDb SqliteDb;
struct SqliteDb {
sqlite3 *db; /* The "real" database structure. MUST BE FIRST */
Tcl_Interp *interp; /* The interpreter used for this database */
char *zBusy; /* The busy callback routine */
char *zCommit; /* The commit hook callback routine */
char *zTrace; /* The trace callback routine */
char *zProfile; /* The profile callback routine */
char *zProgress; /* The progress callback routine */
char *zAuth; /* The authorization callback routine */
int disableAuth; /* Disable the authorizer if it exists */
char *zNull; /* Text to substitute for an SQL NULL value */
SqlFunc *pFunc; /* List of SQL functions */
Tcl_Obj *pUpdateHook; /* Update hook script (if any) */
Tcl_Obj *pRollbackHook; /* Rollback hook script (if any) */
SqlCollate *pCollate; /* List of SQL collation functions */
int rc; /* Return code of most recent sqlite3_exec() */
Tcl_Obj *pCollateNeeded; /* Collation needed script */
SqlPreparedStmt *stmtList; /* List of prepared statements*/
SqlPreparedStmt *stmtLast; /* Last statement in the list */
int maxStmt; /* The next maximum number of stmtList */
int nStmt; /* Number of statements in stmtList */
IncrblobChannel *pIncrblob;/* Linked list of open incrblob channels */
int nStep, nSort; /* Statistics for most recent operation */
};
struct IncrblobChannel {
sqlite3_blob *pBlob; /* sqlite3 blob handle */
SqliteDb *pDb; /* Associated database connection */
int iSeek; /* Current seek offset */
Tcl_Channel channel; /* Channel identifier */
IncrblobChannel *pNext; /* Linked list of all open incrblob channels */
IncrblobChannel *pPrev; /* Linked list of all open incrblob channels */
};
#ifndef SQLITE_OMIT_INCRBLOB
/*
** Close all incrblob channels opened using database connection pDb.
** This is called when shutting down the database connection.
*/
static void closeIncrblobChannels(SqliteDb *pDb){
IncrblobChannel *p;
IncrblobChannel *pNext;
for(p=pDb->pIncrblob; p; p=pNext){
pNext = p->pNext;
/* Note: Calling unregister here call Tcl_Close on the incrblob channel,
** which deletes the IncrblobChannel structure at *p. So do not
** call Tcl_Free() here.
*/
Tcl_UnregisterChannel(pDb->interp, p->channel);
}
}
/*
** Close an incremental blob channel.
*/
static int incrblobClose(ClientData instanceData, Tcl_Interp *interp){
IncrblobChannel *p = (IncrblobChannel *)instanceData;
int rc = sqlite3_blob_close(p->pBlob);
sqlite3 *db = p->pDb->db;
/* Remove the channel from the SqliteDb.pIncrblob list. */
if( p->pNext ){
p->pNext->pPrev = p->pPrev;
}
if( p->pPrev ){
p->pPrev->pNext = p->pNext;
}
if( p->pDb->pIncrblob==p ){
p->pDb->pIncrblob = p->pNext;
}
/* Free the IncrblobChannel structure */
Tcl_Free((char *)p);
if( rc!=SQLITE_OK ){
Tcl_SetResult(interp, (char *)sqlite3_errmsg(db), TCL_VOLATILE);
return TCL_ERROR;
}
return TCL_OK;
}
/*
** Read data from an incremental blob channel.
*/
static int incrblobInput(
ClientData instanceData,
char *buf,
int bufSize,
int *errorCodePtr
){
IncrblobChannel *p = (IncrblobChannel *)instanceData;
int nRead = bufSize; /* Number of bytes to read */
int nBlob; /* Total size of the blob */
int rc; /* sqlite error code */
nBlob = sqlite3_blob_bytes(p->pBlob);
if( (p->iSeek+nRead)>nBlob ){
nRead = nBlob-p->iSeek;
}
if( nRead<=0 ){
return 0;
}
rc = sqlite3_blob_read(p->pBlob, (void *)buf, nRead, p->iSeek);
if( rc!=SQLITE_OK ){
*errorCodePtr = rc;
return -1;
}
p->iSeek += nRead;
return nRead;
}
/*
** Write data to an incremental blob channel.
*/
static int incrblobOutput(
ClientData instanceData,
CONST char *buf,
int toWrite,
int *errorCodePtr
){
IncrblobChannel *p = (IncrblobChannel *)instanceData;
int nWrite = toWrite; /* Number of bytes to write */
int nBlob; /* Total size of the blob */
int rc; /* sqlite error code */
nBlob = sqlite3_blob_bytes(p->pBlob);
if( (p->iSeek+nWrite)>nBlob ){
*errorCodePtr = EINVAL;
return -1;
}
if( nWrite<=0 ){
return 0;
}
rc = sqlite3_blob_write(p->pBlob, (void *)buf, nWrite, p->iSeek);
if( rc!=SQLITE_OK ){
*errorCodePtr = EIO;
return -1;
}
p->iSeek += nWrite;
return nWrite;
}
/*
** Seek an incremental blob channel.
*/
static int incrblobSeek(
ClientData instanceData,
long offset,
int seekMode,
int *errorCodePtr
){
IncrblobChannel *p = (IncrblobChannel *)instanceData;
switch( seekMode ){
case SEEK_SET:
p->iSeek = offset;
break;
case SEEK_CUR:
p->iSeek += offset;
break;
case SEEK_END:
p->iSeek = sqlite3_blob_bytes(p->pBlob) + offset;
break;
default: assert(!"Bad seekMode");
}
return p->iSeek;
}
static void incrblobWatch(ClientData instanceData, int mode){
/* NO-OP */
}
static int incrblobHandle(ClientData instanceData, int dir, ClientData *hPtr){
return TCL_ERROR;
}
static Tcl_ChannelType IncrblobChannelType = {
"incrblob", /* typeName */
TCL_CHANNEL_VERSION_2, /* version */
incrblobClose, /* closeProc */
incrblobInput, /* inputProc */
incrblobOutput, /* outputProc */
incrblobSeek, /* seekProc */
0, /* setOptionProc */
0, /* getOptionProc */
incrblobWatch, /* watchProc (this is a no-op) */
incrblobHandle, /* getHandleProc (always returns error) */
0, /* close2Proc */
0, /* blockModeProc */
0, /* flushProc */
0, /* handlerProc */
0, /* wideSeekProc */
};
/*
** Create a new incrblob channel.
*/
static int createIncrblobChannel(
Tcl_Interp *interp,
SqliteDb *pDb,
const char *zDb,
const char *zTable,
const char *zColumn,
sqlite_int64 iRow,
int isReadonly
){
IncrblobChannel *p;
sqlite3 *db = pDb->db;
sqlite3_blob *pBlob;
int rc;
int flags = TCL_READABLE|(isReadonly ? 0 : TCL_WRITABLE);
/* This variable is used to name the channels: "incrblob_[incr count]" */
static int count = 0;
char zChannel[64];
rc = sqlite3_blob_open(db, zDb, zTable, zColumn, iRow, !isReadonly, &pBlob);
if( rc!=SQLITE_OK ){
Tcl_SetResult(interp, (char *)sqlite3_errmsg(pDb->db), TCL_VOLATILE);
return TCL_ERROR;
}
p = (IncrblobChannel *)Tcl_Alloc(sizeof(IncrblobChannel));
p->iSeek = 0;
p->pBlob = pBlob;
sqlite3_snprintf(sizeof(zChannel), zChannel, "incrblob_%d", ++count);
p->channel = Tcl_CreateChannel(&IncrblobChannelType, zChannel, p, flags);
Tcl_RegisterChannel(interp, p->channel);
/* Link the new channel into the SqliteDb.pIncrblob list. */
p->pNext = pDb->pIncrblob;
p->pPrev = 0;
if( p->pNext ){
p->pNext->pPrev = p;
}
pDb->pIncrblob = p;
p->pDb = pDb;
Tcl_SetResult(interp, (char *)Tcl_GetChannelName(p->channel), TCL_VOLATILE);
return TCL_OK;
}
#else /* else clause for "#ifndef SQLITE_OMIT_INCRBLOB" */
#define closeIncrblobChannels(pDb)
#endif
/*
** Look at the script prefix in pCmd. We will be executing this script
** after first appending one or more arguments. This routine analyzes
** the script to see if it is safe to use Tcl_EvalObjv() on the script
** rather than the more general Tcl_EvalEx(). Tcl_EvalObjv() is much
** faster.
**
** Scripts that are safe to use with Tcl_EvalObjv() consists of a
** command name followed by zero or more arguments with no [...] or $
** or {...} or ; to be seen anywhere. Most callback scripts consist
** of just a single procedure name and they meet this requirement.
*/
static int safeToUseEvalObjv(Tcl_Interp *interp, Tcl_Obj *pCmd){
/* We could try to do something with Tcl_Parse(). But we will instead
** just do a search for forbidden characters. If any of the forbidden
** characters appear in pCmd, we will report the string as unsafe.
*/
const char *z;
int n;
z = Tcl_GetStringFromObj(pCmd, &n);
while( n-- > 0 ){
int c = *(z++);
if( c=='$' || c=='[' || c==';' ) return 0;
}
return 1;
}
/*
** Find an SqlFunc structure with the given name. Or create a new
** one if an existing one cannot be found. Return a pointer to the
** structure.
*/
static SqlFunc *findSqlFunc(SqliteDb *pDb, const char *zName){
SqlFunc *p, *pNew;
int i;
pNew = (SqlFunc*)Tcl_Alloc( sizeof(*pNew) + strlen(zName) + 1 );
pNew->zName = (char*)&pNew[1];
for(i=0; zName[i]; i++){ pNew->zName[i] = tolower(zName[i]); }
pNew->zName[i] = 0;
for(p=pDb->pFunc; p; p=p->pNext){
if( strcmp(p->zName, pNew->zName)==0 ){
Tcl_Free((char*)pNew);
return p;
}
}
pNew->interp = pDb->interp;
pNew->pScript = 0;
pNew->pNext = pDb->pFunc;
pDb->pFunc = pNew;
return pNew;
}
/*
** Finalize and free a list of prepared statements
*/
static void flushStmtCache( SqliteDb *pDb ){
SqlPreparedStmt *pPreStmt;
while( pDb->stmtList ){
sqlite3_finalize( pDb->stmtList->pStmt );
pPreStmt = pDb->stmtList;
pDb->stmtList = pDb->stmtList->pNext;
Tcl_Free( (char*)pPreStmt );
}
pDb->nStmt = 0;
pDb->stmtLast = 0;
}
/*
** TCL calls this procedure when an sqlite3 database command is
** deleted.
*/
static void DbDeleteCmd(void *db){
SqliteDb *pDb = (SqliteDb*)db;
flushStmtCache(pDb);
closeIncrblobChannels(pDb);
sqlite3_close(pDb->db);
while( pDb->pFunc ){
SqlFunc *pFunc = pDb->pFunc;
pDb->pFunc = pFunc->pNext;
Tcl_DecrRefCount(pFunc->pScript);
Tcl_Free((char*)pFunc);
}
while( pDb->pCollate ){
SqlCollate *pCollate = pDb->pCollate;
pDb->pCollate = pCollate->pNext;
Tcl_Free((char*)pCollate);
}
if( pDb->zBusy ){
Tcl_Free(pDb->zBusy);
}
if( pDb->zTrace ){
Tcl_Free(pDb->zTrace);
}
if( pDb->zProfile ){
Tcl_Free(pDb->zProfile);
}
if( pDb->zAuth ){
Tcl_Free(pDb->zAuth);
}
if( pDb->zNull ){
Tcl_Free(pDb->zNull);
}
if( pDb->pUpdateHook ){
Tcl_DecrRefCount(pDb->pUpdateHook);
}
if( pDb->pRollbackHook ){
Tcl_DecrRefCount(pDb->pRollbackHook);
}
if( pDb->pCollateNeeded ){
Tcl_DecrRefCount(pDb->pCollateNeeded);
}
Tcl_Free((char*)pDb);
}
/*
** This routine is called when a database file is locked while trying
** to execute SQL.
*/
static int DbBusyHandler(void *cd, int nTries){
SqliteDb *pDb = (SqliteDb*)cd;
int rc;
char zVal[30];
sqlite3_snprintf(sizeof(zVal), zVal, "%d", nTries);
rc = Tcl_VarEval(pDb->interp, pDb->zBusy, " ", zVal, (char*)0);
if( rc!=TCL_OK || atoi(Tcl_GetStringResult(pDb->interp)) ){
return 0;
}
return 1;
}
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
/*
** This routine is invoked as the 'progress callback' for the database.
*/
static int DbProgressHandler(void *cd){
SqliteDb *pDb = (SqliteDb*)cd;
int rc;
assert( pDb->zProgress );
rc = Tcl_Eval(pDb->interp, pDb->zProgress);
if( rc!=TCL_OK || atoi(Tcl_GetStringResult(pDb->interp)) ){
return 1;
}
return 0;
}
#endif
#ifndef SQLITE_OMIT_TRACE
/*
** This routine is called by the SQLite trace handler whenever a new
** block of SQL is executed. The TCL script in pDb->zTrace is executed.
*/
static void DbTraceHandler(void *cd, const char *zSql){
SqliteDb *pDb = (SqliteDb*)cd;
Tcl_DString str;
Tcl_DStringInit(&str);
Tcl_DStringAppend(&str, pDb->zTrace, -1);
Tcl_DStringAppendElement(&str, zSql);
Tcl_Eval(pDb->interp, Tcl_DStringValue(&str));
Tcl_DStringFree(&str);
Tcl_ResetResult(pDb->interp);
}
#endif
#ifndef SQLITE_OMIT_TRACE
/*
** This routine is called by the SQLite profile handler after a statement
** SQL has executed. The TCL script in pDb->zProfile is evaluated.
*/
static void DbProfileHandler(void *cd, const char *zSql, sqlite_uint64 tm){
SqliteDb *pDb = (SqliteDb*)cd;
Tcl_DString str;
char zTm[100];
sqlite3_snprintf(sizeof(zTm)-1, zTm, "%lld", tm);
Tcl_DStringInit(&str);
Tcl_DStringAppend(&str, pDb->zProfile, -1);
Tcl_DStringAppendElement(&str, zSql);
Tcl_DStringAppendElement(&str, zTm);
Tcl_Eval(pDb->interp, Tcl_DStringValue(&str));
Tcl_DStringFree(&str);
Tcl_ResetResult(pDb->interp);
}
#endif
/*
** This routine is called when a transaction is committed. The
** TCL script in pDb->zCommit is executed. If it returns non-zero or
** if it throws an exception, the transaction is rolled back instead
** of being committed.
*/
static int DbCommitHandler(void *cd){
SqliteDb *pDb = (SqliteDb*)cd;
int rc;
rc = Tcl_Eval(pDb->interp, pDb->zCommit);
if( rc!=TCL_OK || atoi(Tcl_GetStringResult(pDb->interp)) ){
return 1;
}
return 0;
}
static void DbRollbackHandler(void *clientData){
SqliteDb *pDb = (SqliteDb*)clientData;
assert(pDb->pRollbackHook);
if( TCL_OK!=Tcl_EvalObjEx(pDb->interp, pDb->pRollbackHook, 0) ){
Tcl_BackgroundError(pDb->interp);
}
}
static void DbUpdateHandler(
void *p,
int op,
const char *zDb,
const char *zTbl,
sqlite_int64 rowid
){
SqliteDb *pDb = (SqliteDb *)p;
Tcl_Obj *pCmd;
assert( pDb->pUpdateHook );
assert( op==SQLITE_INSERT || op==SQLITE_UPDATE || op==SQLITE_DELETE );
pCmd = Tcl_DuplicateObj(pDb->pUpdateHook);
Tcl_IncrRefCount(pCmd);
Tcl_ListObjAppendElement(0, pCmd, Tcl_NewStringObj(
( (op==SQLITE_INSERT)?"INSERT":(op==SQLITE_UPDATE)?"UPDATE":"DELETE"), -1));
Tcl_ListObjAppendElement(0, pCmd, Tcl_NewStringObj(zDb, -1));
Tcl_ListObjAppendElement(0, pCmd, Tcl_NewStringObj(zTbl, -1));
Tcl_ListObjAppendElement(0, pCmd, Tcl_NewWideIntObj(rowid));
Tcl_EvalObjEx(pDb->interp, pCmd, TCL_EVAL_DIRECT);
}
static void tclCollateNeeded(
void *pCtx,
sqlite3 *db,
int enc,
const char *zName
){
SqliteDb *pDb = (SqliteDb *)pCtx;
Tcl_Obj *pScript = Tcl_DuplicateObj(pDb->pCollateNeeded);
Tcl_IncrRefCount(pScript);
Tcl_ListObjAppendElement(0, pScript, Tcl_NewStringObj(zName, -1));
Tcl_EvalObjEx(pDb->interp, pScript, 0);
Tcl_DecrRefCount(pScript);
}
/*
** This routine is called to evaluate an SQL collation function implemented
** using TCL script.
*/
static int tclSqlCollate(
void *pCtx,
int nA,
const void *zA,
int nB,
const void *zB
){
SqlCollate *p = (SqlCollate *)pCtx;
Tcl_Obj *pCmd;
pCmd = Tcl_NewStringObj(p->zScript, -1);
Tcl_IncrRefCount(pCmd);
Tcl_ListObjAppendElement(p->interp, pCmd, Tcl_NewStringObj(zA, nA));
Tcl_ListObjAppendElement(p->interp, pCmd, Tcl_NewStringObj(zB, nB));
Tcl_EvalObjEx(p->interp, pCmd, TCL_EVAL_DIRECT);
Tcl_DecrRefCount(pCmd);
return (atoi(Tcl_GetStringResult(p->interp)));
}
/*
** This routine is called to evaluate an SQL function implemented
** using TCL script.
*/
static void tclSqlFunc(sqlite3_context *context, int argc, sqlite3_value**argv){
SqlFunc *p = sqlite3_user_data(context);
Tcl_Obj *pCmd;
int i;
int rc;
if( argc==0 ){
/* If there are no arguments to the function, call Tcl_EvalObjEx on the
** script object directly. This allows the TCL compiler to generate
** bytecode for the command on the first invocation and thus make
** subsequent invocations much faster. */
pCmd = p->pScript;
Tcl_IncrRefCount(pCmd);
rc = Tcl_EvalObjEx(p->interp, pCmd, 0);
Tcl_DecrRefCount(pCmd);
}else{
/* If there are arguments to the function, make a shallow copy of the
** script object, lappend the arguments, then evaluate the copy.
**
** By "shallow" copy, we mean a only the outer list Tcl_Obj is duplicated.
** The new Tcl_Obj contains pointers to the original list elements.
** That way, when Tcl_EvalObjv() is run and shimmers the first element
** of the list to tclCmdNameType, that alternate representation will
** be preserved and reused on the next invocation.
*/
Tcl_Obj **aArg;
int nArg;
if( Tcl_ListObjGetElements(p->interp, p->pScript, &nArg, &aArg) ){
sqlite3_result_error(context, Tcl_GetStringResult(p->interp), -1);
return;
}
pCmd = Tcl_NewListObj(nArg, aArg);
Tcl_IncrRefCount(pCmd);
for(i=0; i<argc; i++){
sqlite3_value *pIn = argv[i];
Tcl_Obj *pVal;
/* Set pVal to contain the i'th column of this row. */
switch( sqlite3_value_type(pIn) ){
case SQLITE_BLOB: {
int bytes = sqlite3_value_bytes(pIn);
pVal = Tcl_NewByteArrayObj(sqlite3_value_blob(pIn), bytes);
break;
}
case SQLITE_INTEGER: {
sqlite_int64 v = sqlite3_value_int64(pIn);
if( v>=-2147483647 && v<=2147483647 ){
pVal = Tcl_NewIntObj(v);
}else{
pVal = Tcl_NewWideIntObj(v);
}
break;
}
case SQLITE_FLOAT: {
double r = sqlite3_value_double(pIn);
pVal = Tcl_NewDoubleObj(r);
break;
}
case SQLITE_NULL: {
pVal = Tcl_NewStringObj("", 0);
break;
}
default: {
int bytes = sqlite3_value_bytes(pIn);
pVal = Tcl_NewStringObj((char *)sqlite3_value_text(pIn), bytes);
break;
}
}
rc = Tcl_ListObjAppendElement(p->interp, pCmd, pVal);
if( rc ){
Tcl_DecrRefCount(pCmd);
sqlite3_result_error(context, Tcl_GetStringResult(p->interp), -1);
return;
}
}
if( !p->useEvalObjv ){
/* Tcl_EvalObjEx() will automatically call Tcl_EvalObjv() if pCmd
** is a list without a string representation. To prevent this from
** happening, make sure pCmd has a valid string representation */
Tcl_GetString(pCmd);
}
rc = Tcl_EvalObjEx(p->interp, pCmd, TCL_EVAL_DIRECT);
Tcl_DecrRefCount(pCmd);
}
if( rc && rc!=TCL_RETURN ){
sqlite3_result_error(context, Tcl_GetStringResult(p->interp), -1);
}else{
Tcl_Obj *pVar = Tcl_GetObjResult(p->interp);
int n;
u8 *data;
char *zType = pVar->typePtr ? pVar->typePtr->name : "";
char c = zType[0];
if( c=='b' && strcmp(zType,"bytearray")==0 && pVar->bytes==0 ){
/* Only return a BLOB type if the Tcl variable is a bytearray and
** has no string representation. */
data = Tcl_GetByteArrayFromObj(pVar, &n);
sqlite3_result_blob(context, data, n, SQLITE_TRANSIENT);
}else if( c=='b' && strcmp(zType,"boolean")==0 ){
Tcl_GetIntFromObj(0, pVar, &n);
sqlite3_result_int(context, n);
}else if( c=='d' && strcmp(zType,"double")==0 ){
double r;
Tcl_GetDoubleFromObj(0, pVar, &r);
sqlite3_result_double(context, r);
}else if( (c=='w' && strcmp(zType,"wideInt")==0) ||
(c=='i' && strcmp(zType,"int")==0) ){
Tcl_WideInt v;
Tcl_GetWideIntFromObj(0, pVar, &v);
sqlite3_result_int64(context, v);
}else{
data = (unsigned char *)Tcl_GetStringFromObj(pVar, &n);
sqlite3_result_text(context, (char *)data, n, SQLITE_TRANSIENT);
}
}
}
#ifndef SQLITE_OMIT_AUTHORIZATION
/*
** This is the authentication function. It appends the authentication
** type code and the two arguments to zCmd[] then invokes the result
** on the interpreter. The reply is examined to determine if the
** authentication fails or succeeds.
*/
static int auth_callback(
void *pArg,
int code,
const char *zArg1,
const char *zArg2,
const char *zArg3,
const char *zArg4
){
char *zCode;
Tcl_DString str;
int rc;
const char *zReply;
SqliteDb *pDb = (SqliteDb*)pArg;
if( pDb->disableAuth ) return SQLITE_OK;
switch( code ){
case SQLITE_COPY : zCode="SQLITE_COPY"; break;
case SQLITE_CREATE_INDEX : zCode="SQLITE_CREATE_INDEX"; break;
case SQLITE_CREATE_TABLE : zCode="SQLITE_CREATE_TABLE"; break;
case SQLITE_CREATE_TEMP_INDEX : zCode="SQLITE_CREATE_TEMP_INDEX"; break;
case SQLITE_CREATE_TEMP_TABLE : zCode="SQLITE_CREATE_TEMP_TABLE"; break;
case SQLITE_CREATE_TEMP_TRIGGER: zCode="SQLITE_CREATE_TEMP_TRIGGER"; break;
case SQLITE_CREATE_TEMP_VIEW : zCode="SQLITE_CREATE_TEMP_VIEW"; break;
case SQLITE_CREATE_TRIGGER : zCode="SQLITE_CREATE_TRIGGER"; break;
case SQLITE_CREATE_VIEW : zCode="SQLITE_CREATE_VIEW"; break;
case SQLITE_DELETE : zCode="SQLITE_DELETE"; break;
case SQLITE_DROP_INDEX : zCode="SQLITE_DROP_INDEX"; break;
case SQLITE_DROP_TABLE : zCode="SQLITE_DROP_TABLE"; break;
case SQLITE_DROP_TEMP_INDEX : zCode="SQLITE_DROP_TEMP_INDEX"; break;
case SQLITE_DROP_TEMP_TABLE : zCode="SQLITE_DROP_TEMP_TABLE"; break;
case SQLITE_DROP_TEMP_TRIGGER : zCode="SQLITE_DROP_TEMP_TRIGGER"; break;
case SQLITE_DROP_TEMP_VIEW : zCode="SQLITE_DROP_TEMP_VIEW"; break;
case SQLITE_DROP_TRIGGER : zCode="SQLITE_DROP_TRIGGER"; break;
case SQLITE_DROP_VIEW : zCode="SQLITE_DROP_VIEW"; break;
case SQLITE_INSERT : zCode="SQLITE_INSERT"; break;
case SQLITE_PRAGMA : zCode="SQLITE_PRAGMA"; break;
case SQLITE_READ : zCode="SQLITE_READ"; break;
case SQLITE_SELECT : zCode="SQLITE_SELECT"; break;
case SQLITE_TRANSACTION : zCode="SQLITE_TRANSACTION"; break;
case SQLITE_UPDATE : zCode="SQLITE_UPDATE"; break;
case SQLITE_ATTACH : zCode="SQLITE_ATTACH"; break;
case SQLITE_DETACH : zCode="SQLITE_DETACH"; break;
case SQLITE_ALTER_TABLE : zCode="SQLITE_ALTER_TABLE"; break;
case SQLITE_REINDEX : zCode="SQLITE_REINDEX"; break;
case SQLITE_ANALYZE : zCode="SQLITE_ANALYZE"; break;
case SQLITE_CREATE_VTABLE : zCode="SQLITE_CREATE_VTABLE"; break;
case SQLITE_DROP_VTABLE : zCode="SQLITE_DROP_VTABLE"; break;
case SQLITE_FUNCTION : zCode="SQLITE_FUNCTION"; break;
default : zCode="????"; break;
}
Tcl_DStringInit(&str);
Tcl_DStringAppend(&str, pDb->zAuth, -1);
Tcl_DStringAppendElement(&str, zCode);
Tcl_DStringAppendElement(&str, zArg1 ? zArg1 : "");
Tcl_DStringAppendElement(&str, zArg2 ? zArg2 : "");
Tcl_DStringAppendElement(&str, zArg3 ? zArg3 : "");
Tcl_DStringAppendElement(&str, zArg4 ? zArg4 : "");
rc = Tcl_GlobalEval(pDb->interp, Tcl_DStringValue(&str));
Tcl_DStringFree(&str);
zReply = Tcl_GetStringResult(pDb->interp);
if( strcmp(zReply,"SQLITE_OK")==0 ){
rc = SQLITE_OK;
}else if( strcmp(zReply,"SQLITE_DENY")==0 ){
rc = SQLITE_DENY;
}else if( strcmp(zReply,"SQLITE_IGNORE")==0 ){
rc = SQLITE_IGNORE;
}else{
rc = 999;
}
return rc;
}
#endif /* SQLITE_OMIT_AUTHORIZATION */
/*
** zText is a pointer to text obtained via an sqlite3_result_text()
** or similar interface. This routine returns a Tcl string object,
** reference count set to 0, containing the text. If a translation
** between iso8859 and UTF-8 is required, it is preformed.
*/
static Tcl_Obj *dbTextToObj(char const *zText){
Tcl_Obj *pVal;
#ifdef UTF_TRANSLATION_NEEDED
Tcl_DString dCol;
Tcl_DStringInit(&dCol);
Tcl_ExternalToUtfDString(NULL, zText, -1, &dCol);
pVal = Tcl_NewStringObj(Tcl_DStringValue(&dCol), -1);
Tcl_DStringFree(&dCol);
#else
pVal = Tcl_NewStringObj(zText, -1);
#endif
return pVal;
}
/*
** This routine reads a line of text from FILE in, stores
** the text in memory obtained from malloc() and returns a pointer
** to the text. NULL is returned at end of file, or if malloc()
** fails.
**
** The interface is like "readline" but no command-line editing
** is done.
**
** copied from shell.c from '.import' command
*/
static char *local_getline(char *zPrompt, FILE *in){
char *zLine;
int nLine;
int n;
int eol;
nLine = 100;
zLine = malloc( nLine );
if( zLine==0 ) return 0;
n = 0;
eol = 0;
while( !eol ){
if( n+100>nLine ){
nLine = nLine*2 + 100;
zLine = realloc(zLine, nLine);
if( zLine==0 ) return 0;
}
if( fgets(&zLine[n], nLine - n, in)==0 ){
if( n==0 ){
free(zLine);
return 0;
}
zLine[n] = 0;
eol = 1;
break;
}
while( zLine[n] ){ n++; }
if( n>0 && zLine[n-1]=='\n' ){
n--;
zLine[n] = 0;
eol = 1;
}
}
zLine = realloc( zLine, n+1 );
return zLine;
}
/*
** Figure out the column names for the data returned by the statement
** passed as the second argument.
**
** If parameter papColName is not NULL, then *papColName is set to point
** at an array allocated using Tcl_Alloc(). It is the callers responsibility
** to free this array using Tcl_Free(), and to decrement the reference
** count of each Tcl_Obj* member of the array.
**
** The return value of this function is the number of columns of data
** returned by pStmt (and hence the size of the *papColName array).
**
** If pArray is not NULL, then it contains the name of a Tcl array
** variable. The "*" member of this array is set to a list containing
** the names of the columns returned by the statement, in order from
** left to right. e.g. if the names of the returned columns are a, b and
** c, it does the equivalent of the tcl command:
**
** set ${pArray}(*) {a b c}
*/
static int
computeColumnNames(
Tcl_Interp *interp,
sqlite3_stmt *pStmt, /* SQL statement */
Tcl_Obj ***papColName, /* OUT: Array of column names */
Tcl_Obj *pArray /* Name of array variable (may be null) */
){
int nCol;
/* Compute column names */
nCol = sqlite3_column_count(pStmt);
if( papColName ){
int i;
Tcl_Obj **apColName = (Tcl_Obj**)Tcl_Alloc( sizeof(Tcl_Obj*)*nCol );
for(i=0; i<nCol; i++){
apColName[i] = dbTextToObj(sqlite3_column_name(pStmt,i));
Tcl_IncrRefCount(apColName[i]);
}
/* If results are being stored in an array variable, then create
** the array(*) entry for that array
*/
if( pArray ){
Tcl_Obj *pColList = Tcl_NewObj();
Tcl_Obj *pStar = Tcl_NewStringObj("*", -1);
Tcl_IncrRefCount(pColList);
for(i=0; i<nCol; i++){
Tcl_ListObjAppendElement(interp, pColList, apColName[i]);
}
Tcl_IncrRefCount(pStar);
Tcl_ObjSetVar2(interp, pArray, pStar, pColList,0);
Tcl_DecrRefCount(pColList);
Tcl_DecrRefCount(pStar);
}
*papColName = apColName;
}
return nCol;
}
/*
** The "sqlite" command below creates a new Tcl command for each
** connection it opens to an SQLite database. This routine is invoked
** whenever one of those connection-specific commands is executed
** in Tcl. For example, if you run Tcl code like this:
**
** sqlite3 db1 "my_database"
** db1 close
**
** The first command opens a connection to the "my_database" database
** and calls that connection "db1". The second command causes this
** subroutine to be invoked.
*/
static int DbObjCmd(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
SqliteDb *pDb = (SqliteDb*)cd;
int choice;
int rc = TCL_OK;
static const char *DB_strs[] = {
"authorizer", "busy", "cache",
"changes", "close", "collate",
"collation_needed", "commit_hook", "complete",
"copy", "enable_load_extension","errorcode",
"eval", "exists", "function",
"incrblob", "interrupt", "last_insert_rowid",
"nullvalue", "onecolumn", "profile",
"progress", "rekey", "rollback_hook",
"status", "timeout", "total_changes",
"trace", "transaction", "update_hook",
"version", 0
};
enum DB_enum {
DB_AUTHORIZER, DB_BUSY, DB_CACHE,
DB_CHANGES, DB_CLOSE, DB_COLLATE,
DB_COLLATION_NEEDED, DB_COMMIT_HOOK, DB_COMPLETE,
DB_COPY, DB_ENABLE_LOAD_EXTENSION,DB_ERRORCODE,
DB_EVAL, DB_EXISTS, DB_FUNCTION,
DB_INCRBLOB, DB_INTERRUPT, DB_LAST_INSERT_ROWID,
DB_NULLVALUE, DB_ONECOLUMN, DB_PROFILE,
DB_PROGRESS, DB_REKEY, DB_ROLLBACK_HOOK,
DB_STATUS, DB_TIMEOUT, DB_TOTAL_CHANGES,
DB_TRACE, DB_TRANSACTION, DB_UPDATE_HOOK,
DB_VERSION
};
/* don't leave trailing commas on DB_enum, it confuses the AIX xlc compiler */
if( objc<2 ){
Tcl_WrongNumArgs(interp, 1, objv, "SUBCOMMAND ...");
return TCL_ERROR;
}
if( Tcl_GetIndexFromObj(interp, objv[1], DB_strs, "option", 0, &choice) ){
return TCL_ERROR;
}
switch( (enum DB_enum)choice ){
/* $db authorizer ?CALLBACK?
**
** Invoke the given callback to authorize each SQL operation as it is
** compiled. 5 arguments are appended to the callback before it is
** invoked:
**
** (1) The authorization type (ex: SQLITE_CREATE_TABLE, SQLITE_INSERT, ...)
** (2) First descriptive name (depends on authorization type)
** (3) Second descriptive name
** (4) Name of the database (ex: "main", "temp")
** (5) Name of trigger that is doing the access
**
** The callback should return on of the following strings: SQLITE_OK,
** SQLITE_IGNORE, or SQLITE_DENY. Any other return value is an error.
**
** If this method is invoked with no arguments, the current authorization
** callback string is returned.
*/
case DB_AUTHORIZER: {
#ifdef SQLITE_OMIT_AUTHORIZATION
Tcl_AppendResult(interp, "authorization not available in this build", 0);
return TCL_ERROR;
#else
if( objc>3 ){
Tcl_WrongNumArgs(interp, 2, objv, "?CALLBACK?");
return TCL_ERROR;
}else if( objc==2 ){
if( pDb->zAuth ){
Tcl_AppendResult(interp, pDb->zAuth, 0);
}
}else{
char *zAuth;
int len;
if( pDb->zAuth ){
Tcl_Free(pDb->zAuth);
}
zAuth = Tcl_GetStringFromObj(objv[2], &len);
if( zAuth && len>0 ){
pDb->zAuth = Tcl_Alloc( len + 1 );
memcpy(pDb->zAuth, zAuth, len+1);
}else{
pDb->zAuth = 0;
}
if( pDb->zAuth ){
pDb->interp = interp;
sqlite3_set_authorizer(pDb->db, auth_callback, pDb);
}else{
sqlite3_set_authorizer(pDb->db, 0, 0);
}
}
#endif
break;
}
/* $db busy ?CALLBACK?
**
** Invoke the given callback if an SQL statement attempts to open
** a locked database file.
*/
case DB_BUSY: {
if( objc>3 ){
Tcl_WrongNumArgs(interp, 2, objv, "CALLBACK");
return TCL_ERROR;
}else if( objc==2 ){
if( pDb->zBusy ){
Tcl_AppendResult(interp, pDb->zBusy, 0);
}
}else{
char *zBusy;
int len;
if( pDb->zBusy ){
Tcl_Free(pDb->zBusy);
}
zBusy = Tcl_GetStringFromObj(objv[2], &len);
if( zBusy && len>0 ){
pDb->zBusy = Tcl_Alloc( len + 1 );
memcpy(pDb->zBusy, zBusy, len+1);
}else{
pDb->zBusy = 0;
}
if( pDb->zBusy ){
pDb->interp = interp;
sqlite3_busy_handler(pDb->db, DbBusyHandler, pDb);
}else{
sqlite3_busy_handler(pDb->db, 0, 0);
}
}
break;
}
/* $db cache flush
** $db cache size n
**
** Flush the prepared statement cache, or set the maximum number of
** cached statements.
*/
case DB_CACHE: {
char *subCmd;
int n;
if( objc<=2 ){
Tcl_WrongNumArgs(interp, 1, objv, "cache option ?arg?");
return TCL_ERROR;
}
subCmd = Tcl_GetStringFromObj( objv[2], 0 );
if( *subCmd=='f' && strcmp(subCmd,"flush")==0 ){
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "flush");
return TCL_ERROR;
}else{
flushStmtCache( pDb );
}
}else if( *subCmd=='s' && strcmp(subCmd,"size")==0 ){
if( objc!=4 ){
Tcl_WrongNumArgs(interp, 2, objv, "size n");
return TCL_ERROR;
}else{
if( TCL_ERROR==Tcl_GetIntFromObj(interp, objv[3], &n) ){
Tcl_AppendResult( interp, "cannot convert \"",
Tcl_GetStringFromObj(objv[3],0), "\" to integer", 0);
return TCL_ERROR;
}else{
if( n<0 ){
flushStmtCache( pDb );
n = 0;
}else if( n>MAX_PREPARED_STMTS ){
n = MAX_PREPARED_STMTS;
}
pDb->maxStmt = n;
}
}
}else{
Tcl_AppendResult( interp, "bad option \"",
Tcl_GetStringFromObj(objv[2],0), "\": must be flush or size", 0);
return TCL_ERROR;
}
break;
}
/* $db changes
**
** Return the number of rows that were modified, inserted, or deleted by
** the most recent INSERT, UPDATE or DELETE statement, not including
** any changes made by trigger programs.
*/
case DB_CHANGES: {
Tcl_Obj *pResult;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 2, objv, "");
return TCL_ERROR;
}
pResult = Tcl_GetObjResult(interp);
Tcl_SetIntObj(pResult, sqlite3_changes(pDb->db));
break;
}
/* $db close
**
** Shutdown the database
*/
case DB_CLOSE: {
Tcl_DeleteCommand(interp, Tcl_GetStringFromObj(objv[0], 0));
break;
}
/*
** $db collate NAME SCRIPT
**
** Create a new SQL collation function called NAME. Whenever
** that function is called, invoke SCRIPT to evaluate the function.
*/
case DB_COLLATE: {
SqlCollate *pCollate;
char *zName;
char *zScript;
int nScript;
if( objc!=4 ){
Tcl_WrongNumArgs(interp, 2, objv, "NAME SCRIPT");
return TCL_ERROR;
}
zName = Tcl_GetStringFromObj(objv[2], 0);
zScript = Tcl_GetStringFromObj(objv[3], &nScript);
pCollate = (SqlCollate*)Tcl_Alloc( sizeof(*pCollate) + nScript + 1 );
if( pCollate==0 ) return TCL_ERROR;
pCollate->interp = interp;
pCollate->pNext = pDb->pCollate;
pCollate->zScript = (char*)&pCollate[1];
pDb->pCollate = pCollate;
memcpy(pCollate->zScript, zScript, nScript+1);
if( sqlite3_create_collation(pDb->db, zName, SQLITE_UTF8,
pCollate, tclSqlCollate) ){
Tcl_SetResult(interp, (char *)sqlite3_errmsg(pDb->db), TCL_VOLATILE);
return TCL_ERROR;
}
break;
}
/*
** $db collation_needed SCRIPT
**
** Create a new SQL collation function called NAME. Whenever
** that function is called, invoke SCRIPT to evaluate the function.
*/
case DB_COLLATION_NEEDED: {
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "SCRIPT");
return TCL_ERROR;
}
if( pDb->pCollateNeeded ){
Tcl_DecrRefCount(pDb->pCollateNeeded);
}
pDb->pCollateNeeded = Tcl_DuplicateObj(objv[2]);
Tcl_IncrRefCount(pDb->pCollateNeeded);
sqlite3_collation_needed(pDb->db, pDb, tclCollateNeeded);
break;
}
/* $db commit_hook ?CALLBACK?
**
** Invoke the given callback just before committing every SQL transaction.
** If the callback throws an exception or returns non-zero, then the
** transaction is aborted. If CALLBACK is an empty string, the callback
** is disabled.
*/
case DB_COMMIT_HOOK: {
if( objc>3 ){
Tcl_WrongNumArgs(interp, 2, objv, "?CALLBACK?");
return TCL_ERROR;
}else if( objc==2 ){
if( pDb->zCommit ){
Tcl_AppendResult(interp, pDb->zCommit, 0);
}
}else{
char *zCommit;
int len;
if( pDb->zCommit ){
Tcl_Free(pDb->zCommit);
}
zCommit = Tcl_GetStringFromObj(objv[2], &len);
if( zCommit && len>0 ){
pDb->zCommit = Tcl_Alloc( len + 1 );
memcpy(pDb->zCommit, zCommit, len+1);
}else{
pDb->zCommit = 0;
}
if( pDb->zCommit ){
pDb->interp = interp;
sqlite3_commit_hook(pDb->db, DbCommitHandler, pDb);
}else{
sqlite3_commit_hook(pDb->db, 0, 0);
}
}
break;
}
/* $db complete SQL
**
** Return TRUE if SQL is a complete SQL statement. Return FALSE if
** additional lines of input are needed. This is similar to the
** built-in "info complete" command of Tcl.
*/
case DB_COMPLETE: {
#ifndef SQLITE_OMIT_COMPLETE
Tcl_Obj *pResult;
int isComplete;
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "SQL");
return TCL_ERROR;
}
isComplete = sqlite3_complete( Tcl_GetStringFromObj(objv[2], 0) );
pResult = Tcl_GetObjResult(interp);
Tcl_SetBooleanObj(pResult, isComplete);
#endif
break;
}
/* $db copy conflict-algorithm table filename ?SEPARATOR? ?NULLINDICATOR?
**
** Copy data into table from filename, optionally using SEPARATOR
** as column separators. If a column contains a null string, or the
** value of NULLINDICATOR, a NULL is inserted for the column.
** conflict-algorithm is one of the sqlite conflict algorithms:
** rollback, abort, fail, ignore, replace
** On success, return the number of lines processed, not necessarily same
** as 'db changes' due to conflict-algorithm selected.
**
** This code is basically an implementation/enhancement of
** the sqlite3 shell.c ".import" command.
**
** This command usage is equivalent to the sqlite2.x COPY statement,
** which imports file data into a table using the PostgreSQL COPY file format:
** $db copy $conflit_algo $table_name $filename \t \\N
*/
case DB_COPY: {
char *zTable; /* Insert data into this table */
char *zFile; /* The file from which to extract data */
char *zConflict; /* The conflict algorithm to use */
sqlite3_stmt *pStmt; /* A statement */
int nCol; /* Number of columns in the table */
int nByte; /* Number of bytes in an SQL string */
int i, j; /* Loop counters */
int nSep; /* Number of bytes in zSep[] */
int nNull; /* Number of bytes in zNull[] */
char *zSql; /* An SQL statement */
char *zLine; /* A single line of input from the file */
char **azCol; /* zLine[] broken up into columns */
char *zCommit; /* How to commit changes */
FILE *in; /* The input file */
int lineno = 0; /* Line number of input file */
char zLineNum[80]; /* Line number print buffer */
Tcl_Obj *pResult; /* interp result */
char *zSep;
char *zNull;
if( objc<5 || objc>7 ){
Tcl_WrongNumArgs(interp, 2, objv,
"CONFLICT-ALGORITHM TABLE FILENAME ?SEPARATOR? ?NULLINDICATOR?");
return TCL_ERROR;
}
if( objc>=6 ){
zSep = Tcl_GetStringFromObj(objv[5], 0);
}else{
zSep = "\t";
}
if( objc>=7 ){
zNull = Tcl_GetStringFromObj(objv[6], 0);
}else{
zNull = "";
}
zConflict = Tcl_GetStringFromObj(objv[2], 0);
zTable = Tcl_GetStringFromObj(objv[3], 0);
zFile = Tcl_GetStringFromObj(objv[4], 0);
nSep = strlen(zSep);
nNull = strlen(zNull);
if( nSep==0 ){
Tcl_AppendResult(interp,"Error: non-null separator required for copy",0);
return TCL_ERROR;
}
if(strcmp(zConflict, "rollback") != 0 &&
strcmp(zConflict, "abort" ) != 0 &&
strcmp(zConflict, "fail" ) != 0 &&
strcmp(zConflict, "ignore" ) != 0 &&
strcmp(zConflict, "replace" ) != 0 ) {
Tcl_AppendResult(interp, "Error: \"", zConflict,
"\", conflict-algorithm must be one of: rollback, "
"abort, fail, ignore, or replace", 0);
return TCL_ERROR;
}
zSql = sqlite3_mprintf("SELECT * FROM '%q'", zTable);
if( zSql==0 ){
Tcl_AppendResult(interp, "Error: no such table: ", zTable, 0);
return TCL_ERROR;
}
nByte = strlen(zSql);
rc = sqlite3_prepare(pDb->db, zSql, -1, &pStmt, 0);
sqlite3_free(zSql);
if( rc ){
Tcl_AppendResult(interp, "Error: ", sqlite3_errmsg(pDb->db), 0);
nCol = 0;
}else{
nCol = sqlite3_column_count(pStmt);
}
sqlite3_finalize(pStmt);
if( nCol==0 ) {
return TCL_ERROR;
}
zSql = malloc( nByte + 50 + nCol*2 );
if( zSql==0 ) {
Tcl_AppendResult(interp, "Error: can't malloc()", 0);
return TCL_ERROR;
}
sqlite3_snprintf(nByte+50, zSql, "INSERT OR %q INTO '%q' VALUES(?",
zConflict, zTable);
j = strlen(zSql);
for(i=1; i<nCol; i++){
zSql[j++] = ',';
zSql[j++] = '?';
}
zSql[j++] = ')';
zSql[j] = 0;
rc = sqlite3_prepare(pDb->db, zSql, -1, &pStmt, 0);
free(zSql);
if( rc ){
Tcl_AppendResult(interp, "Error: ", sqlite3_errmsg(pDb->db), 0);
sqlite3_finalize(pStmt);
return TCL_ERROR;
}
in = fopen(zFile, "rb");
if( in==0 ){
Tcl_AppendResult(interp, "Error: cannot open file: ", zFile, NULL);
sqlite3_finalize(pStmt);
return TCL_ERROR;
}
azCol = malloc( sizeof(azCol[0])*(nCol+1) );
if( azCol==0 ) {
Tcl_AppendResult(interp, "Error: can't malloc()", 0);
fclose(in);
return TCL_ERROR;
}
(void)sqlite3_exec(pDb->db, "BEGIN", 0, 0, 0);
zCommit = "COMMIT";
while( (zLine = local_getline(0, in))!=0 ){
char *z;
i = 0;
lineno++;
azCol[0] = zLine;
for(i=0, z=zLine; *z; z++){
if( *z==zSep[0] && strncmp(z, zSep, nSep)==0 ){
*z = 0;
i++;
if( i<nCol ){
azCol[i] = &z[nSep];
z += nSep-1;
}
}
}
if( i+1!=nCol ){
char *zErr;
int nErr = strlen(zFile) + 200;
zErr = malloc(nErr);
if( zErr ){
sqlite3_snprintf(nErr, zErr,
"Error: %s line %d: expected %d columns of data but found %d",
zFile, lineno, nCol, i+1);
Tcl_AppendResult(interp, zErr, 0);
free(zErr);
}
zCommit = "ROLLBACK";
break;
}
for(i=0; i<nCol; i++){
/* check for null data, if so, bind as null */
if ((nNull>0 && strcmp(azCol[i], zNull)==0) || strlen(azCol[i])==0) {
sqlite3_bind_null(pStmt, i+1);
}else{
sqlite3_bind_text(pStmt, i+1, azCol[i], -1, SQLITE_STATIC);
}
}
sqlite3_step(pStmt);
rc = sqlite3_reset(pStmt);
free(zLine);
if( rc!=SQLITE_OK ){
Tcl_AppendResult(interp,"Error: ", sqlite3_errmsg(pDb->db), 0);
zCommit = "ROLLBACK";
break;
}
}
free(azCol);
fclose(in);
sqlite3_finalize(pStmt);
(void)sqlite3_exec(pDb->db, zCommit, 0, 0, 0);
if( zCommit[0] == 'C' ){
/* success, set result as number of lines processed */
pResult = Tcl_GetObjResult(interp);
Tcl_SetIntObj(pResult, lineno);
rc = TCL_OK;
}else{
/* failure, append lineno where failed */
sqlite3_snprintf(sizeof(zLineNum), zLineNum,"%d",lineno);
Tcl_AppendResult(interp,", failed while processing line: ",zLineNum,0);
rc = TCL_ERROR;
}
break;
}
/*
** $db enable_load_extension BOOLEAN
**
** Turn the extension loading feature on or off. It if off by
** default.
*/
case DB_ENABLE_LOAD_EXTENSION: {
#ifndef SQLITE_OMIT_LOAD_EXTENSION
int onoff;
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "BOOLEAN");
return TCL_ERROR;
}
if( Tcl_GetBooleanFromObj(interp, objv[2], &onoff) ){
return TCL_ERROR;
}
sqlite3_enable_load_extension(pDb->db, onoff);
break;
#else
Tcl_AppendResult(interp, "extension loading is turned off at compile-time",
0);
return TCL_ERROR;
#endif
}
/*
** $db errorcode
**
** Return the numeric error code that was returned by the most recent
** call to sqlite3_exec().
*/
case DB_ERRORCODE: {
Tcl_SetObjResult(interp, Tcl_NewIntObj(sqlite3_errcode(pDb->db)));
break;
}
/*
** $db eval $sql ?array? ?{ ...code... }?
** $db onecolumn $sql
**
** The SQL statement in $sql is evaluated. For each row, the values are
** placed in elements of the array named "array" and ...code... is executed.
** If "array" and "code" are omitted, then no callback is every invoked.
** If "array" is an empty string, then the values are placed in variables
** that have the same name as the fields extracted by the query.
**
** The onecolumn method is the equivalent of:
** lindex [$db eval $sql] 0
*/
case DB_ONECOLUMN:
case DB_EVAL:
case DB_EXISTS: {
char const *zSql; /* Next SQL statement to execute */
char const *zLeft; /* What is left after first stmt in zSql */
sqlite3_stmt *pStmt; /* Compiled SQL statment */
Tcl_Obj *pArray; /* Name of array into which results are written */
Tcl_Obj *pScript; /* Script to run for each result set */
Tcl_Obj **apParm; /* Parameters that need a Tcl_DecrRefCount() */
int nParm; /* Number of entries used in apParm[] */
Tcl_Obj *aParm[10]; /* Static space for apParm[] in the common case */
Tcl_Obj *pRet; /* Value to be returned */
SqlPreparedStmt *pPreStmt; /* Pointer to a prepared statement */
int rc2;
if( choice==DB_EVAL ){
if( objc<3 || objc>5 ){
Tcl_WrongNumArgs(interp, 2, objv, "SQL ?ARRAY-NAME? ?SCRIPT?");
return TCL_ERROR;
}
pRet = Tcl_NewObj();
Tcl_IncrRefCount(pRet);
}else{
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "SQL");
return TCL_ERROR;
}
if( choice==DB_EXISTS ){
pRet = Tcl_NewBooleanObj(0);
Tcl_IncrRefCount(pRet);
}else{
pRet = 0;
}
}
if( objc==3 ){
pArray = pScript = 0;
}else if( objc==4 ){
pArray = 0;
pScript = objv[3];
}else{
pArray = objv[3];
if( Tcl_GetString(pArray)[0]==0 ) pArray = 0;
pScript = objv[4];
}
Tcl_IncrRefCount(objv[2]);
zSql = Tcl_GetStringFromObj(objv[2], 0);
while( rc==TCL_OK && zSql[0] ){
int i; /* Loop counter */
int nVar; /* Number of bind parameters in the pStmt */
int nCol = -1; /* Number of columns in the result set */
Tcl_Obj **apColName = 0; /* Array of column names */
int len; /* String length of zSql */
/* Try to find a SQL statement that has already been compiled and
** which matches the next sequence of SQL.
*/
pStmt = 0;
len = strlen(zSql);
for(pPreStmt = pDb->stmtList; pPreStmt; pPreStmt=pPreStmt->pNext){
int n = pPreStmt->nSql;
if( len>=n
&& memcmp(pPreStmt->zSql, zSql, n)==0
&& (zSql[n]==0 || zSql[n-1]==';')
){
pStmt = pPreStmt->pStmt;
zLeft = &zSql[pPreStmt->nSql];
/* When a prepared statement is found, unlink it from the
** cache list. It will later be added back to the beginning
** of the cache list in order to implement LRU replacement.
*/
if( pPreStmt->pPrev ){
pPreStmt->pPrev->pNext = pPreStmt->pNext;
}else{
pDb->stmtList = pPreStmt->pNext;
}
if( pPreStmt->pNext ){
pPreStmt->pNext->pPrev = pPreStmt->pPrev;
}else{
pDb->stmtLast = pPreStmt->pPrev;
}
pDb->nStmt--;
break;
}
}
/* If no prepared statement was found. Compile the SQL text
*/
if( pStmt==0 ){
if( SQLITE_OK!=sqlite3_prepare_v2(pDb->db, zSql, -1, &pStmt, &zLeft) ){
Tcl_SetObjResult(interp, dbTextToObj(sqlite3_errmsg(pDb->db)));
rc = TCL_ERROR;
break;
}
if( pStmt==0 ){
if( SQLITE_OK!=sqlite3_errcode(pDb->db) ){
/* A compile-time error in the statement
*/
Tcl_SetObjResult(interp, dbTextToObj(sqlite3_errmsg(pDb->db)));
rc = TCL_ERROR;
break;
}else{
/* The statement was a no-op. Continue to the next statement
** in the SQL string.
*/
zSql = zLeft;
continue;
}
}
assert( pPreStmt==0 );
}
/* Bind values to parameters that begin with $ or :
*/
nVar = sqlite3_bind_parameter_count(pStmt);
nParm = 0;
if( nVar>sizeof(aParm)/sizeof(aParm[0]) ){
apParm = (Tcl_Obj**)Tcl_Alloc(nVar*sizeof(apParm[0]));
}else{
apParm = aParm;
}
for(i=1; i<=nVar; i++){
const char *zVar = sqlite3_bind_parameter_name(pStmt, i);
if( zVar!=0 && (zVar[0]=='$' || zVar[0]==':' || zVar[0]=='@') ){
Tcl_Obj *pVar = Tcl_GetVar2Ex(interp, &zVar[1], 0, 0);
if( pVar ){
int n;
u8 *data;
char *zType = pVar->typePtr ? pVar->typePtr->name : "";
char c = zType[0];
if( zVar[0]=='@' ||
(c=='b' && strcmp(zType,"bytearray")==0 && pVar->bytes==0) ){
/* Load a BLOB type if the Tcl variable is a bytearray and
** it has no string representation or the host
** parameter name begins with "@". */
data = Tcl_GetByteArrayFromObj(pVar, &n);
sqlite3_bind_blob(pStmt, i, data, n, SQLITE_STATIC);
Tcl_IncrRefCount(pVar);
apParm[nParm++] = pVar;
}else if( c=='b' && strcmp(zType,"boolean")==0 ){
Tcl_GetIntFromObj(interp, pVar, &n);
sqlite3_bind_int(pStmt, i, n);
}else if( c=='d' && strcmp(zType,"double")==0 ){
double r;
Tcl_GetDoubleFromObj(interp, pVar, &r);
sqlite3_bind_double(pStmt, i, r);
}else if( (c=='w' && strcmp(zType,"wideInt")==0) ||
(c=='i' && strcmp(zType,"int")==0) ){
Tcl_WideInt v;
Tcl_GetWideIntFromObj(interp, pVar, &v);
sqlite3_bind_int64(pStmt, i, v);
}else{
data = (unsigned char *)Tcl_GetStringFromObj(pVar, &n);
sqlite3_bind_text(pStmt, i, (char *)data, n, SQLITE_STATIC);
Tcl_IncrRefCount(pVar);
apParm[nParm++] = pVar;
}
}else{
sqlite3_bind_null( pStmt, i );
}
}
}
/* Execute the SQL
*/
while( rc==TCL_OK && pStmt && SQLITE_ROW==sqlite3_step(pStmt) ){
/* Compute column names. This must be done after the first successful
** call to sqlite3_step(), in case the query is recompiled and the
** number or names of the returned columns changes.
*/
assert(!pArray||pScript);
if (nCol < 0) {
Tcl_Obj ***ap = (pScript?&apColName:0);
nCol = computeColumnNames(interp, pStmt, ap, pArray);
}
for(i=0; i<nCol; i++){
Tcl_Obj *pVal;
/* Set pVal to contain the i'th column of this row. */
switch( sqlite3_column_type(pStmt, i) ){
case SQLITE_BLOB: {
int bytes = sqlite3_column_bytes(pStmt, i);
const char *zBlob = sqlite3_column_blob(pStmt, i);
if( !zBlob ) bytes = 0;
pVal = Tcl_NewByteArrayObj((u8*)zBlob, bytes);
break;
}
case SQLITE_INTEGER: {
sqlite_int64 v = sqlite3_column_int64(pStmt, i);
if( v>=-2147483647 && v<=2147483647 ){
pVal = Tcl_NewIntObj(v);
}else{
pVal = Tcl_NewWideIntObj(v);
}
break;
}
case SQLITE_FLOAT: {
double r = sqlite3_column_double(pStmt, i);
pVal = Tcl_NewDoubleObj(r);
break;
}
case SQLITE_NULL: {
pVal = dbTextToObj(pDb->zNull);
break;
}
default: {
pVal = dbTextToObj((char *)sqlite3_column_text(pStmt, i));
break;
}
}
if( pScript ){
if( pArray==0 ){
Tcl_ObjSetVar2(interp, apColName[i], 0, pVal, 0);
}else{
Tcl_ObjSetVar2(interp, pArray, apColName[i], pVal, 0);
}
}else if( choice==DB_ONECOLUMN ){
assert( pRet==0 );
if( pRet==0 ){
pRet = pVal;
Tcl_IncrRefCount(pRet);
}
rc = TCL_BREAK;
i = nCol;
}else if( choice==DB_EXISTS ){
Tcl_DecrRefCount(pRet);
pRet = Tcl_NewBooleanObj(1);
Tcl_IncrRefCount(pRet);
rc = TCL_BREAK;
i = nCol;
}else{
Tcl_ListObjAppendElement(interp, pRet, pVal);
}
}
if( pScript ){
pDb->nStep = sqlite3_stmt_status(pStmt,
SQLITE_STMTSTATUS_FULLSCAN_STEP, 0);
pDb->nSort = sqlite3_stmt_status(pStmt,
SQLITE_STMTSTATUS_SORT, 0);
rc = Tcl_EvalObjEx(interp, pScript, 0);
if( rc==TCL_CONTINUE ){
rc = TCL_OK;
}
}
}
if( rc==TCL_BREAK ){
rc = TCL_OK;
}
/* Free the column name objects */
if( pScript ){
/* If the query returned no rows, but an array variable was
** specified, call computeColumnNames() now to populate the
** arrayname(*) variable.
*/
if (pArray && nCol < 0) {
Tcl_Obj ***ap = (pScript?&apColName:0);
nCol = computeColumnNames(interp, pStmt, ap, pArray);
}
for(i=0; i<nCol; i++){
Tcl_DecrRefCount(apColName[i]);
}
Tcl_Free((char*)apColName);
}
/* Free the bound string and blob parameters */
for(i=0; i<nParm; i++){
Tcl_DecrRefCount(apParm[i]);
}
if( apParm!=aParm ){
Tcl_Free((char*)apParm);
}
/* Reset the statement. If the result code is SQLITE_SCHEMA, then
** flush the statement cache and try the statement again.
*/
rc2 = sqlite3_reset(pStmt);
pDb->nStep = sqlite3_stmt_status(pStmt,
SQLITE_STMTSTATUS_FULLSCAN_STEP, 1);
pDb->nSort = sqlite3_stmt_status(pStmt,
SQLITE_STMTSTATUS_SORT, 1);
if( SQLITE_OK!=rc2 ){
/* If a run-time error occurs, report the error and stop reading
** the SQL
*/
Tcl_SetObjResult(interp, dbTextToObj(sqlite3_errmsg(pDb->db)));
sqlite3_finalize(pStmt);
rc = TCL_ERROR;
if( pPreStmt ) Tcl_Free((char*)pPreStmt);
break;
}else if( pDb->maxStmt<=0 ){
/* If the cache is turned off, deallocated the statement */
if( pPreStmt ) Tcl_Free((char*)pPreStmt);
sqlite3_finalize(pStmt);
}else{
/* Everything worked and the cache is operational.
** Create a new SqlPreparedStmt structure if we need one.
** (If we already have one we can just reuse it.)
*/
if( pPreStmt==0 ){
len = zLeft - zSql;
pPreStmt = (SqlPreparedStmt*)Tcl_Alloc( sizeof(*pPreStmt) );
if( pPreStmt==0 ) return TCL_ERROR;
pPreStmt->pStmt = pStmt;
pPreStmt->nSql = len;
pPreStmt->zSql = sqlite3_sql(pStmt);
assert( strlen(pPreStmt->zSql)==len );
assert( 0==memcmp(pPreStmt->zSql, zSql, len) );
}
/* Add the prepared statement to the beginning of the cache list
*/
pPreStmt->pNext = pDb->stmtList;
pPreStmt->pPrev = 0;
if( pDb->stmtList ){
pDb->stmtList->pPrev = pPreStmt;
}
pDb->stmtList = pPreStmt;
if( pDb->stmtLast==0 ){
assert( pDb->nStmt==0 );
pDb->stmtLast = pPreStmt;
}else{
assert( pDb->nStmt>0 );
}
pDb->nStmt++;
/* If we have too many statement in cache, remove the surplus from the
** end of the cache list.
*/
while( pDb->nStmt>pDb->maxStmt ){
sqlite3_finalize(pDb->stmtLast->pStmt);
pDb->stmtLast = pDb->stmtLast->pPrev;
Tcl_Free((char*)pDb->stmtLast->pNext);
pDb->stmtLast->pNext = 0;
pDb->nStmt--;
}
}
/* Proceed to the next statement */
zSql = zLeft;
}
Tcl_DecrRefCount(objv[2]);
if( pRet ){
if( rc==TCL_OK ){
Tcl_SetObjResult(interp, pRet);
}
Tcl_DecrRefCount(pRet);
}else if( rc==TCL_OK ){
Tcl_ResetResult(interp);
}
break;
}
/*
** $db function NAME [-argcount N] SCRIPT
**
** Create a new SQL function called NAME. Whenever that function is
** called, invoke SCRIPT to evaluate the function.
*/
case DB_FUNCTION: {
SqlFunc *pFunc;
Tcl_Obj *pScript;
char *zName;
int nArg = -1;
if( objc==6 ){
const char *z = Tcl_GetString(objv[3]);
int n = strlen(z);
if( n>2 && strncmp(z, "-argcount",n)==0 ){
if( Tcl_GetIntFromObj(interp, objv[4], &nArg) ) return TCL_ERROR;
if( nArg<0 ){
Tcl_AppendResult(interp, "number of arguments must be non-negative",
(char*)0);
return TCL_ERROR;
}
}
pScript = objv[5];
}else if( objc!=4 ){
Tcl_WrongNumArgs(interp, 2, objv, "NAME [-argcount N] SCRIPT");
return TCL_ERROR;
}else{
pScript = objv[3];
}
zName = Tcl_GetStringFromObj(objv[2], 0);
pFunc = findSqlFunc(pDb, zName);
if( pFunc==0 ) return TCL_ERROR;
if( pFunc->pScript ){
Tcl_DecrRefCount(pFunc->pScript);
}
pFunc->pScript = pScript;
Tcl_IncrRefCount(pScript);
pFunc->useEvalObjv = safeToUseEvalObjv(interp, pScript);
rc = sqlite3_create_function(pDb->db, zName, nArg, SQLITE_UTF8,
pFunc, tclSqlFunc, 0, 0);
if( rc!=SQLITE_OK ){
rc = TCL_ERROR;
Tcl_SetResult(interp, (char *)sqlite3_errmsg(pDb->db), TCL_VOLATILE);
}
break;
}
/*
** $db incrblob ?-readonly? ?DB? TABLE COLUMN ROWID
*/
case DB_INCRBLOB: {
#ifdef SQLITE_OMIT_INCRBLOB
Tcl_AppendResult(interp, "incrblob not available in this build", 0);
return TCL_ERROR;
#else
int isReadonly = 0;
const char *zDb = "main";
const char *zTable;
const char *zColumn;
sqlite_int64 iRow;
/* Check for the -readonly option */
if( objc>3 && strcmp(Tcl_GetString(objv[2]), "-readonly")==0 ){
isReadonly = 1;
}
if( objc!=(5+isReadonly) && objc!=(6+isReadonly) ){
Tcl_WrongNumArgs(interp, 2, objv, "?-readonly? ?DB? TABLE COLUMN ROWID");
return TCL_ERROR;
}
if( objc==(6+isReadonly) ){
zDb = Tcl_GetString(objv[2]);
}
zTable = Tcl_GetString(objv[objc-3]);
zColumn = Tcl_GetString(objv[objc-2]);
rc = Tcl_GetWideIntFromObj(interp, objv[objc-1], &iRow);
if( rc==TCL_OK ){
rc = createIncrblobChannel(
interp, pDb, zDb, zTable, zColumn, iRow, isReadonly
);
}
#endif
break;
}
/*
** $db interrupt
**
** Interrupt the execution of the inner-most SQL interpreter. This
** causes the SQL statement to return an error of SQLITE_INTERRUPT.
*/
case DB_INTERRUPT: {
sqlite3_interrupt(pDb->db);
break;
}
/*
** $db nullvalue ?STRING?
**
** Change text used when a NULL comes back from the database. If ?STRING?
** is not present, then the current string used for NULL is returned.
** If STRING is present, then STRING is returned.
**
*/
case DB_NULLVALUE: {
if( objc!=2 && objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "NULLVALUE");
return TCL_ERROR;
}
if( objc==3 ){
int len;
char *zNull = Tcl_GetStringFromObj(objv[2], &len);
if( pDb->zNull ){
Tcl_Free(pDb->zNull);
}
if( zNull && len>0 ){
pDb->zNull = Tcl_Alloc( len + 1 );
strncpy(pDb->zNull, zNull, len);
pDb->zNull[len] = '\0';
}else{
pDb->zNull = 0;
}
}
Tcl_SetObjResult(interp, dbTextToObj(pDb->zNull));
break;
}
/*
** $db last_insert_rowid
**
** Return an integer which is the ROWID for the most recent insert.
*/
case DB_LAST_INSERT_ROWID: {
Tcl_Obj *pResult;
Tcl_WideInt rowid;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 2, objv, "");
return TCL_ERROR;
}
rowid = sqlite3_last_insert_rowid(pDb->db);
pResult = Tcl_GetObjResult(interp);
Tcl_SetWideIntObj(pResult, rowid);
break;
}
/*
** The DB_ONECOLUMN method is implemented together with DB_EVAL.
*/
/* $db progress ?N CALLBACK?
**
** Invoke the given callback every N virtual machine opcodes while executing
** queries.
*/
case DB_PROGRESS: {
if( objc==2 ){
if( pDb->zProgress ){
Tcl_AppendResult(interp, pDb->zProgress, 0);
}
}else if( objc==4 ){
char *zProgress;
int len;
int N;
if( TCL_OK!=Tcl_GetIntFromObj(interp, objv[2], &N) ){
return TCL_ERROR;
};
if( pDb->zProgress ){
Tcl_Free(pDb->zProgress);
}
zProgress = Tcl_GetStringFromObj(objv[3], &len);
if( zProgress && len>0 ){
pDb->zProgress = Tcl_Alloc( len + 1 );
memcpy(pDb->zProgress, zProgress, len+1);
}else{
pDb->zProgress = 0;
}
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
if( pDb->zProgress ){
pDb->interp = interp;
sqlite3_progress_handler(pDb->db, N, DbProgressHandler, pDb);
}else{
sqlite3_progress_handler(pDb->db, 0, 0, 0);
}
#endif
}else{
Tcl_WrongNumArgs(interp, 2, objv, "N CALLBACK");
return TCL_ERROR;
}
break;
}
/* $db profile ?CALLBACK?
**
** Make arrangements to invoke the CALLBACK routine after each SQL statement
** that has run. The text of the SQL and the amount of elapse time are
** appended to CALLBACK before the script is run.
*/
case DB_PROFILE: {
if( objc>3 ){
Tcl_WrongNumArgs(interp, 2, objv, "?CALLBACK?");
return TCL_ERROR;
}else if( objc==2 ){
if( pDb->zProfile ){
Tcl_AppendResult(interp, pDb->zProfile, 0);
}
}else{
char *zProfile;
int len;
if( pDb->zProfile ){
Tcl_Free(pDb->zProfile);
}
zProfile = Tcl_GetStringFromObj(objv[2], &len);
if( zProfile && len>0 ){
pDb->zProfile = Tcl_Alloc( len + 1 );
memcpy(pDb->zProfile, zProfile, len+1);
}else{
pDb->zProfile = 0;
}
#ifndef SQLITE_OMIT_TRACE
if( pDb->zProfile ){
pDb->interp = interp;
sqlite3_profile(pDb->db, DbProfileHandler, pDb);
}else{
sqlite3_profile(pDb->db, 0, 0);
}
#endif
}
break;
}
/*
** $db rekey KEY
**
** Change the encryption key on the currently open database.
*/
case DB_REKEY: {
int nKey;
void *pKey;
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "KEY");
return TCL_ERROR;
}
pKey = Tcl_GetByteArrayFromObj(objv[2], &nKey);
#ifdef SQLITE_HAS_CODEC
rc = sqlite3_rekey(pDb->db, pKey, nKey);
if( rc ){
Tcl_AppendResult(interp, sqlite3ErrStr(rc), 0);
rc = TCL_ERROR;
}
#endif
break;
}
/*
** $db status (step|sort)
**
** Display SQLITE_STMTSTATUS_FULLSCAN_STEP or
** SQLITE_STMTSTATUS_SORT for the most recent eval.
*/
case DB_STATUS: {
int v;
const char *zOp;
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "(step|sort)");
return TCL_ERROR;
}
zOp = Tcl_GetString(objv[2]);
if( strcmp(zOp, "step")==0 ){
v = pDb->nStep;
}else if( strcmp(zOp, "sort")==0 ){
v = pDb->nSort;
}else{
Tcl_AppendResult(interp, "bad argument: should be step or sort",
(char*)0);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, Tcl_NewIntObj(v));
break;
}
/*
** $db timeout MILLESECONDS
**
** Delay for the number of milliseconds specified when a file is locked.
*/
case DB_TIMEOUT: {
int ms;
if( objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "MILLISECONDS");
return TCL_ERROR;
}
if( Tcl_GetIntFromObj(interp, objv[2], &ms) ) return TCL_ERROR;
sqlite3_busy_timeout(pDb->db, ms);
break;
}
/*
** $db total_changes
**
** Return the number of rows that were modified, inserted, or deleted
** since the database handle was created.
*/
case DB_TOTAL_CHANGES: {
Tcl_Obj *pResult;
if( objc!=2 ){
Tcl_WrongNumArgs(interp, 2, objv, "");
return TCL_ERROR;
}
pResult = Tcl_GetObjResult(interp);
Tcl_SetIntObj(pResult, sqlite3_total_changes(pDb->db));
break;
}
/* $db trace ?CALLBACK?
**
** Make arrangements to invoke the CALLBACK routine for each SQL statement
** that is executed. The text of the SQL is appended to CALLBACK before
** it is executed.
*/
case DB_TRACE: {
if( objc>3 ){
Tcl_WrongNumArgs(interp, 2, objv, "?CALLBACK?");
return TCL_ERROR;
}else if( objc==2 ){
if( pDb->zTrace ){
Tcl_AppendResult(interp, pDb->zTrace, 0);
}
}else{
char *zTrace;
int len;
if( pDb->zTrace ){
Tcl_Free(pDb->zTrace);
}
zTrace = Tcl_GetStringFromObj(objv[2], &len);
if( zTrace && len>0 ){
pDb->zTrace = Tcl_Alloc( len + 1 );
memcpy(pDb->zTrace, zTrace, len+1);
}else{
pDb->zTrace = 0;
}
#ifndef SQLITE_OMIT_TRACE
if( pDb->zTrace ){
pDb->interp = interp;
sqlite3_trace(pDb->db, DbTraceHandler, pDb);
}else{
sqlite3_trace(pDb->db, 0, 0);
}
#endif
}
break;
}
/* $db transaction [-deferred|-immediate|-exclusive] SCRIPT
**
** Start a new transaction (if we are not already in the midst of a
** transaction) and execute the TCL script SCRIPT. After SCRIPT
** completes, either commit the transaction or roll it back if SCRIPT
** throws an exception. Or if no new transation was started, do nothing.
** pass the exception on up the stack.
**
** This command was inspired by Dave Thomas's talk on Ruby at the
** 2005 O'Reilly Open Source Convention (OSCON).
*/
case DB_TRANSACTION: {
int inTrans;
Tcl_Obj *pScript;
const char *zBegin = "BEGIN";
if( objc!=3 && objc!=4 ){
Tcl_WrongNumArgs(interp, 2, objv, "[TYPE] SCRIPT");
return TCL_ERROR;
}
if( objc==3 ){
pScript = objv[2];
} else {
static const char *TTYPE_strs[] = {
"deferred", "exclusive", "immediate", 0
};
enum TTYPE_enum {
TTYPE_DEFERRED, TTYPE_EXCLUSIVE, TTYPE_IMMEDIATE
};
int ttype;
if( Tcl_GetIndexFromObj(interp, objv[2], TTYPE_strs, "transaction type",
0, &ttype) ){
return TCL_ERROR;
}
switch( (enum TTYPE_enum)ttype ){
case TTYPE_DEFERRED: /* no-op */; break;
case TTYPE_EXCLUSIVE: zBegin = "BEGIN EXCLUSIVE"; break;
case TTYPE_IMMEDIATE: zBegin = "BEGIN IMMEDIATE"; break;
}
pScript = objv[3];
}
inTrans = !sqlite3_get_autocommit(pDb->db);
if( !inTrans ){
pDb->disableAuth++;
(void)sqlite3_exec(pDb->db, zBegin, 0, 0, 0);
pDb->disableAuth--;
}
rc = Tcl_EvalObjEx(interp, pScript, 0);
if( !inTrans ){
const char *zEnd;
if( rc==TCL_ERROR ){
zEnd = "ROLLBACK";
} else {
zEnd = "COMMIT";
}
pDb->disableAuth++;
if( sqlite3_exec(pDb->db, zEnd, 0, 0, 0) ){
sqlite3_exec(pDb->db, "ROLLBACK", 0, 0, 0);
}
pDb->disableAuth--;
}
break;
}
/*
** $db update_hook ?script?
** $db rollback_hook ?script?
*/
case DB_UPDATE_HOOK:
case DB_ROLLBACK_HOOK: {
/* set ppHook to point at pUpdateHook or pRollbackHook, depending on
** whether [$db update_hook] or [$db rollback_hook] was invoked.
*/
Tcl_Obj **ppHook;
if( choice==DB_UPDATE_HOOK ){
ppHook = &pDb->pUpdateHook;
}else{
ppHook = &pDb->pRollbackHook;
}
if( objc!=2 && objc!=3 ){
Tcl_WrongNumArgs(interp, 2, objv, "?SCRIPT?");
return TCL_ERROR;
}
if( *ppHook ){
Tcl_SetObjResult(interp, *ppHook);
if( objc==3 ){
Tcl_DecrRefCount(*ppHook);
*ppHook = 0;
}
}
if( objc==3 ){
assert( !(*ppHook) );
if( Tcl_GetCharLength(objv[2])>0 ){
*ppHook = objv[2];
Tcl_IncrRefCount(*ppHook);
}
}
sqlite3_update_hook(pDb->db, (pDb->pUpdateHook?DbUpdateHandler:0), pDb);
sqlite3_rollback_hook(pDb->db,(pDb->pRollbackHook?DbRollbackHandler:0),pDb);
break;
}
/* $db version
**
** Return the version string for this database.
*/
case DB_VERSION: {
Tcl_SetResult(interp, (char *)sqlite3_libversion(), TCL_STATIC);
break;
}
} /* End of the SWITCH statement */
return rc;
}
/*
** sqlite3 DBNAME FILENAME ?-vfs VFSNAME? ?-key KEY? ?-readonly BOOLEAN?
** ?-create BOOLEAN? ?-nomutex BOOLEAN?
**
** This is the main Tcl command. When the "sqlite" Tcl command is
** invoked, this routine runs to process that command.
**
** The first argument, DBNAME, is an arbitrary name for a new
** database connection. This command creates a new command named
** DBNAME that is used to control that connection. The database
** connection is deleted when the DBNAME command is deleted.
**
** The second argument is the name of the database file.
**
*/
static int DbMain(void *cd, Tcl_Interp *interp, int objc,Tcl_Obj *const*objv){
SqliteDb *p;
void *pKey = 0;
int nKey = 0;
const char *zArg;
char *zErrMsg;
int i;
const char *zFile;
const char *zVfs = 0;
int flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_NOMUTEX;
Tcl_DString translatedFilename;
if( objc==2 ){
zArg = Tcl_GetStringFromObj(objv[1], 0);
if( strcmp(zArg,"-version")==0 ){
Tcl_AppendResult(interp,sqlite3_version,0);
return TCL_OK;
}
if( strcmp(zArg,"-has-codec")==0 ){
#ifdef SQLITE_HAS_CODEC
Tcl_AppendResult(interp,"1",0);
#else
Tcl_AppendResult(interp,"0",0);
#endif
return TCL_OK;
}
}
for(i=3; i+1<objc; i+=2){
zArg = Tcl_GetString(objv[i]);
if( strcmp(zArg,"-key")==0 ){
pKey = Tcl_GetByteArrayFromObj(objv[i+1], &nKey);
}else if( strcmp(zArg, "-vfs")==0 ){
i++;
zVfs = Tcl_GetString(objv[i]);
}else if( strcmp(zArg, "-readonly")==0 ){
int b;
if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
if( b ){
flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
flags |= SQLITE_OPEN_READONLY;
}else{
flags &= ~SQLITE_OPEN_READONLY;
flags |= SQLITE_OPEN_READWRITE;
}
}else if( strcmp(zArg, "-create")==0 ){
int b;
if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
if( b && (flags & SQLITE_OPEN_READONLY)==0 ){
flags |= SQLITE_OPEN_CREATE;
}else{
flags &= ~SQLITE_OPEN_CREATE;
}
}else if( strcmp(zArg, "-nomutex")==0 ){
int b;
if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
if( b ){
flags |= SQLITE_OPEN_NOMUTEX;
flags &= ~SQLITE_OPEN_FULLMUTEX;
}else{
flags &= ~SQLITE_OPEN_NOMUTEX;
}
}else if( strcmp(zArg, "-fullmutex")==0 ){
int b;
if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
if( b ){
flags |= SQLITE_OPEN_FULLMUTEX;
flags &= ~SQLITE_OPEN_NOMUTEX;
}else{
flags &= ~SQLITE_OPEN_FULLMUTEX;
}
}else{
Tcl_AppendResult(interp, "unknown option: ", zArg, (char*)0);
return TCL_ERROR;
}
}
if( objc<3 || (objc&1)!=1 ){
Tcl_WrongNumArgs(interp, 1, objv,
"HANDLE FILENAME ?-vfs VFSNAME? ?-readonly BOOLEAN? ?-create BOOLEAN?"
" ?-nomutex BOOLEAN? ?-fullmutex BOOLEAN?"
#ifdef SQLITE_HAS_CODEC
" ?-key CODECKEY?"
#endif
);
return TCL_ERROR;
}
zErrMsg = 0;
p = (SqliteDb*)Tcl_Alloc( sizeof(*p) );
if( p==0 ){
Tcl_SetResult(interp, "malloc failed", TCL_STATIC);
return TCL_ERROR;
}
memset(p, 0, sizeof(*p));
zFile = Tcl_GetStringFromObj(objv[2], 0);
zFile = Tcl_TranslateFileName(interp, zFile, &translatedFilename);
sqlite3_open_v2(zFile, &p->db, flags, zVfs);
Tcl_DStringFree(&translatedFilename);
if( SQLITE_OK!=sqlite3_errcode(p->db) ){
zErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(p->db));
sqlite3_close(p->db);
p->db = 0;
}
#ifdef SQLITE_HAS_CODEC
if( p->db ){
sqlite3_key(p->db, pKey, nKey);
}
#endif
if( p->db==0 ){
Tcl_SetResult(interp, zErrMsg, TCL_VOLATILE);
Tcl_Free((char*)p);
sqlite3_free(zErrMsg);
return TCL_ERROR;
}
p->maxStmt = NUM_PREPARED_STMTS;
p->interp = interp;
zArg = Tcl_GetStringFromObj(objv[1], 0);
Tcl_CreateObjCommand(interp, zArg, DbObjCmd, (char*)p, DbDeleteCmd);
return TCL_OK;
}
/*
** Provide a dummy Tcl_InitStubs if we are using this as a static
** library.
*/
#ifndef USE_TCL_STUBS
# undef Tcl_InitStubs
# define Tcl_InitStubs(a,b,c)
#endif
/*
** Make sure we have a PACKAGE_VERSION macro defined. This will be
** defined automatically by the TEA makefile. But other makefiles
** do not define it.
*/
#ifndef PACKAGE_VERSION
# define PACKAGE_VERSION SQLITE_VERSION
#endif
/*
** Initialize this module.
**
** This Tcl module contains only a single new Tcl command named "sqlite".
** (Hence there is no namespace. There is no point in using a namespace
** if the extension only supplies one new name!) The "sqlite" command is
** used to open a new SQLite database. See the DbMain() routine above
** for additional information.
*/
EXTERN int Sqlite3_Init(Tcl_Interp *interp){
Tcl_InitStubs(interp, "8.4", 0);
Tcl_CreateObjCommand(interp, "sqlite3", (Tcl_ObjCmdProc*)DbMain, 0, 0);
Tcl_PkgProvide(interp, "sqlite3", PACKAGE_VERSION);
Tcl_CreateObjCommand(interp, "sqlite", (Tcl_ObjCmdProc*)DbMain, 0, 0);
Tcl_PkgProvide(interp, "sqlite", PACKAGE_VERSION);
return TCL_OK;
}
EXTERN int Tclsqlite3_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
EXTERN int Sqlite3_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
EXTERN int Tclsqlite3_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
EXTERN int Sqlite3_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Tclsqlite3_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Sqlite3_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Tclsqlite3_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK;}
#ifndef SQLITE_3_SUFFIX_ONLY
EXTERN int Sqlite_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
EXTERN int Tclsqlite_Init(Tcl_Interp *interp){ return Sqlite3_Init(interp); }
EXTERN int Sqlite_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
EXTERN int Tclsqlite_SafeInit(Tcl_Interp *interp){ return TCL_OK; }
EXTERN int Sqlite_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Tclsqlite_Unload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Sqlite_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK; }
EXTERN int Tclsqlite_SafeUnload(Tcl_Interp *interp, int flags){ return TCL_OK;}
#endif
#ifdef TCLSH
/*****************************************************************************
** The code that follows is used to build standalone TCL interpreters
** that are statically linked with SQLite.
*/
/*
** If the macro TCLSH is one, then put in code this for the
** "main" routine that will initialize Tcl and take input from
** standard input, or if a file is named on the command line
** the TCL interpreter reads and evaluates that file.
*/
#if TCLSH==1
static char zMainloop[] =
"set line {}\n"
"while {![eof stdin]} {\n"
"if {$line!=\"\"} {\n"
"puts -nonewline \"> \"\n"
"} else {\n"
"puts -nonewline \"% \"\n"
"}\n"
"flush stdout\n"
"append line [gets stdin]\n"
"if {[info complete $line]} {\n"
"if {[catch {uplevel #0 $line} result]} {\n"
"puts stderr \"Error: $result\"\n"
"} elseif {$result!=\"\"} {\n"
"puts $result\n"
"}\n"
"set line {}\n"
"} else {\n"
"append line \\n\n"
"}\n"
"}\n"
;
#endif
/*
** If the macro TCLSH is two, then get the main loop code out of
** the separate file "spaceanal_tcl.h".
*/
#if TCLSH==2
static char zMainloop[] =
#include "spaceanal_tcl.h"
;
#endif
#define TCLSH_MAIN main /* Needed to fake out mktclapp */
int TCLSH_MAIN(int argc, char **argv){
Tcl_Interp *interp;
Tcl_FindExecutable(argv[0]);
interp = Tcl_CreateInterp();
Sqlite3_Init(interp);
#ifdef SQLITE_TEST
{
extern int Md5_Init(Tcl_Interp*);
extern int Sqliteconfig_Init(Tcl_Interp*);
extern int Sqlitetest1_Init(Tcl_Interp*);
extern int Sqlitetest2_Init(Tcl_Interp*);
extern int Sqlitetest3_Init(Tcl_Interp*);
extern int Sqlitetest4_Init(Tcl_Interp*);
extern int Sqlitetest5_Init(Tcl_Interp*);
extern int Sqlitetest6_Init(Tcl_Interp*);
extern int Sqlitetest7_Init(Tcl_Interp*);
extern int Sqlitetest8_Init(Tcl_Interp*);
extern int Sqlitetest9_Init(Tcl_Interp*);
extern int Sqlitetestasync_Init(Tcl_Interp*);
extern int Sqlitetest_autoext_Init(Tcl_Interp*);
extern int Sqlitetest_func_Init(Tcl_Interp*);
extern int Sqlitetest_hexio_Init(Tcl_Interp*);
extern int Sqlitetest_malloc_Init(Tcl_Interp*);
extern int Sqlitetest_mutex_Init(Tcl_Interp*);
extern int Sqlitetestschema_Init(Tcl_Interp*);
extern int Sqlitetestsse_Init(Tcl_Interp*);
extern int Sqlitetesttclvar_Init(Tcl_Interp*);
extern int SqlitetestThread_Init(Tcl_Interp*);
extern int SqlitetestOnefile_Init();
extern int SqlitetestOsinst_Init(Tcl_Interp*);
Md5_Init(interp);
Sqliteconfig_Init(interp);
Sqlitetest1_Init(interp);
Sqlitetest2_Init(interp);
Sqlitetest3_Init(interp);
Sqlitetest4_Init(interp);
Sqlitetest5_Init(interp);
Sqlitetest6_Init(interp);
Sqlitetest7_Init(interp);
Sqlitetest8_Init(interp);
Sqlitetest9_Init(interp);
Sqlitetestasync_Init(interp);
Sqlitetest_autoext_Init(interp);
Sqlitetest_func_Init(interp);
Sqlitetest_hexio_Init(interp);
Sqlitetest_malloc_Init(interp);
Sqlitetest_mutex_Init(interp);
Sqlitetestschema_Init(interp);
Sqlitetesttclvar_Init(interp);
SqlitetestThread_Init(interp);
SqlitetestOnefile_Init(interp);
SqlitetestOsinst_Init(interp);
#ifdef SQLITE_SSE
Sqlitetestsse_Init(interp);
#endif
}
#endif
if( argc>=2 || TCLSH==2 ){
int i;
char zArgc[32];
sqlite3_snprintf(sizeof(zArgc), zArgc, "%d", argc-(3-TCLSH));
Tcl_SetVar(interp,"argc", zArgc, TCL_GLOBAL_ONLY);
Tcl_SetVar(interp,"argv0",argv[1],TCL_GLOBAL_ONLY);
Tcl_SetVar(interp,"argv", "", TCL_GLOBAL_ONLY);
for(i=3-TCLSH; i<argc; i++){
Tcl_SetVar(interp, "argv", argv[i],
TCL_GLOBAL_ONLY | TCL_LIST_ELEMENT | TCL_APPEND_VALUE);
}
if( TCLSH==1 && Tcl_EvalFile(interp, argv[1])!=TCL_OK ){
const char *zInfo = Tcl_GetVar(interp, "errorInfo", TCL_GLOBAL_ONLY);
if( zInfo==0 ) zInfo = interp->result;
fprintf(stderr,"%s: %s\n", *argv, zInfo);
return 1;
}
}
if( argc<=1 || TCLSH==2 ){
Tcl_GlobalEval(interp, zMainloop);
}
return 0;
}
#endif /* TCLSH */