Split main.c into two files to make building without the parser easier. (CVS 2481)
FossilOrigin-Name: d50915fafbde6859a5c2c3fc5cc9b99553b54e21
This commit is contained in:
danielk1977
parent
97903fef77
commit
fa256a3306
@ -115,7 +115,7 @@ TCC += -DSQLITE_OMIT_CURSOR
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LIBOBJ = alter.lo attach.lo auth.lo btree.lo build.lo callback.lo date.lo \
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delete.lo expr.lo func.lo hash.lo insert.lo \
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main.lo opcodes.lo os_unix.lo os_win.lo \
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pager.lo parse.lo pragma.lo printf.lo random.lo \
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pager.lo parse.lo pragma.lo prepare.lo printf.lo random.lo \
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select.lo table.lo tokenize.lo trigger.lo update.lo \
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util.lo vacuum.lo vdbe.lo vdbeapi.lo vdbeaux.lo vdbemem.lo \
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where.lo utf.lo legacy.lo
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@ -145,6 +145,7 @@ SRC = \
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$(TOP)/src/pager.h \
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$(TOP)/src/parse.y \
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$(TOP)/src/pragma.c \
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$(TOP)/src/prepare.c \
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$(TOP)/src/printf.c \
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$(TOP)/src/random.c \
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$(TOP)/src/select.c \
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@ -333,6 +334,9 @@ parse.c: $(TOP)/src/parse.y lemon$(BEXE)
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pragma.lo: $(TOP)/src/pragma.c $(HDR)
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$(LTCOMPILE) -c $(TOP)/src/pragma.c
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prepare.lo: $(TOP)/src/prepare.c $(HDR)
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$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/prepare.c
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printf.lo: $(TOP)/src/printf.c $(HDR)
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$(LTCOMPILE) -c $(TOP)/src/printf.c
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6
main.mk
6
main.mk
@ -57,7 +57,7 @@ TCCX = $(TCC) $(OPTS) $(THREADSAFE) $(USLEEP) -I. -I$(TOP)/src
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LIBOBJ+= alter.o attach.o auth.o btree.o build.o callback.o date.o delete.o \
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expr.o func.o hash.o insert.o \
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main.o opcodes.o os_unix.o os_win.o \
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pager.o parse.o pragma.o printf.o random.o \
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pager.o parse.o pragma.o prepare.o printf.o random.o \
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select.o table.o tclsqlite.o tokenize.o trigger.o \
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update.o util.o vacuum.o \
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vdbe.o vdbeapi.o vdbeaux.o vdbemem.o \
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@ -88,6 +88,7 @@ SRC = \
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$(TOP)/src/pager.h \
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$(TOP)/src/parse.y \
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$(TOP)/src/pragma.c \
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$(TOP)/src/prepare.c \
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$(TOP)/src/printf.c \
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$(TOP)/src/random.c \
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$(TOP)/src/select.c \
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@ -268,6 +269,9 @@ parse.c: $(TOP)/src/parse.y lemon
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pragma.o: $(TOP)/src/pragma.c $(HDR)
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$(TCCX) $(TCL_FLAGS) -c $(TOP)/src/pragma.c
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prepare.o: $(TOP)/src/prepare.c $(HDR)
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$(TCCX) $(TCL_FLAGS) -c $(TOP)/src/prepare.c
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printf.o: $(TOP)/src/printf.c $(HDR)
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$(TCCX) $(TCL_FLAGS) -c $(TOP)/src/printf.c
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19
manifest
19
manifest
@ -1,6 +1,6 @@
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C Remove\sthe\sconfig.h\sfile\sfrom\sthe\sbuild.\s\sTicket\s#1224.\s(CVS\s2480)
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D 2005-05-24T20:19:58
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F Makefile.in b2b2d69640853c3917fedd9296e9003d610d86b1
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C Split\smain.c\sinto\stwo\sfiles\sto\smake\sbuilding\swithout\sthe\sparser\seasier.\s(CVS\s2481)
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D 2005-05-25T04:11:56
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F Makefile.in 8129e7f261d405db783676f9ca31e0841768c652
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F Makefile.linux-gcc 06be33b2a9ad4f005a5f42b22c4a19dab3cbb5c7
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F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
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F VERSION 44187d7938af15a89b7b2dcd0016ffe5ec84961f
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@ -16,7 +16,7 @@ F doc/lemon.html f0f682f50210928c07e562621c3b7e8ab912a538
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F doc/report1.txt a031aaf37b185e4fa540223cb516d3bccec7eeac
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F install-sh 9d4de14ab9fb0facae2f48780b874848cbf2f895
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F ltmain.sh f6b283068efa69f06eb8aa1fe4bddfdbdeb35826
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F main.mk 4695aa29032a0665c2becf38a29180b38b90e178
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F main.mk 8972f361ff4d9f3e215c4a346c91424620c87fc4
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F mkdll.sh 5ec23622515d5bf8969404e80cfb5e220ddf0512
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F mkopcodec.awk bd46ad001c98dfbab07b1713cb8e692fa0e5415d
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F mkopcodeh.awk 7563ad235670e864ead95cf672be3fe081450ae0
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@ -43,7 +43,7 @@ F src/hash.c 2b1b13f7400e179631c83a1be0c664608c8f021f
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F src/hash.h 1b0c445e1c89ff2aaad9b4605ba61375af001e84
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F src/insert.c 34c25c33f51a43644a42cc091ac967b070c6b6d5
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F src/legacy.c d58ea507bce885298a2c8c3cbb0f4bff5d47830b
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F src/main.c 8de9c03d8388d2ccb3a89bdf0596f2280e21b655
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F src/main.c 8954071c07b29636c57c4cb7b445562210738e29
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F src/md5.c 7ae1c39044b95de2f62e066f47bb1deb880a1070
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F src/os.h e5438be25cf96858787bf9b60fc7a2420e139ee3
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F src/os_common.h 0e7f428ba0a6c40a61bc56c4e96f493231301b73
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@ -57,6 +57,7 @@ F src/pager.c f86d79d37eb4e30d8e2201dbe12497370719320c
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F src/pager.h 0d9153d6269d60d04af3dd84a0cc0a96253cf4a4
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F src/parse.y 72cd7553f05fbc7b63ea9476108d0da6237f2818
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F src/pragma.c 0ed94a1aa982802a9cf2a932c48d99b60683fa53
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F src/prepare.c d53602d2f8e097225ae7c76ec764ae68f759ba47
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F src/printf.c 3d20b21cfecadacecac3fb7274e746cb81d3d357
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F src/random.c eff68e3f257e05e81eae6c4d50a51eb88beb4ff3
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F src/select.c 43cc2a76e3e00dabc59da82d0dcdef23cdba43a3
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@ -280,7 +281,7 @@ F www/tclsqlite.tcl 425be741b8ae664f55cb1ef2371aab0a75109cf9
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F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
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F www/version3.tcl a99cf5f6d8bd4d5537584a2b342f0fb9fa601d8b
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F www/whentouse.tcl 528299b8316726dbcc5548e9aa0648c8b1bd055b
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P 5fadb464eb77b4b998d8555f83401769960ea904
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R 559b7971d270b59c0ead6f07efa2b008
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U drh
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Z c2b1f0d897d1329ca3d0de496bb83bf1
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P 3e64f1ab417f371e9875915303b898c5b45f0807
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R f1df240b45731b7db4ecb585924f1d63
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U danielk1977
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Z 9396e64a640a1eaa13d2b45263343304
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@ -1 +1 @@
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3e64f1ab417f371e9875915303b898c5b45f0807
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d50915fafbde6859a5c2c3fc5cc9b99553b54e21
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510
src/main.c
510
src/main.c
@ -14,7 +14,7 @@
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** other files are for internal use by SQLite and should not be
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** accessed by users of the library.
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**
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** $Id: main.c,v 1.290 2005/05/24 20:19:59 drh Exp $
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** $Id: main.c,v 1.291 2005/05/25 04:11:56 danielk1977 Exp $
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*/
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#include "sqliteInt.h"
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#include "os.h"
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@ -35,18 +35,6 @@ const int sqlite3one = 1;
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static sqlite3 *pDbList = 0;
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#endif
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/*
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** Fill the InitData structure with an error message that indicates
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** that the database is corrupt.
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*/
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static void corruptSchema(InitData *pData, const char *zExtra){
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if( !sqlite3_malloc_failed ){
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sqlite3SetString(pData->pzErrMsg, "malformed database schema",
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zExtra!=0 && zExtra[0]!=0 ? " - " : (char*)0, zExtra, (char*)0);
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}
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}
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#ifndef SQLITE_OMIT_UTF16
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/*
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** Return the transient sqlite3_value object used for encoding conversions
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@ -60,354 +48,6 @@ sqlite3_value *sqlite3GetTransientValue(sqlite3 *db){
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}
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#endif
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/*
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** This is the callback routine for the code that initializes the
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** database. See sqlite3Init() below for additional information.
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** This routine is also called from the OP_ParseSchema opcode of the VDBE.
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**
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** Each callback contains the following information:
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**
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** argv[0] = name of thing being created
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** argv[1] = root page number for table or index. NULL for trigger or view.
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** argv[2] = SQL text for the CREATE statement.
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** argv[3] = "1" for temporary files, "0" for main database, "2" or more
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** for auxiliary database files.
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**
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*/
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int sqlite3InitCallback(void *pInit, int argc, char **argv, char **azColName){
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InitData *pData = (InitData*)pInit;
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sqlite3 *db = pData->db;
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int iDb;
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assert( argc==4 );
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if( argv==0 ) return 0; /* Might happen if EMPTY_RESULT_CALLBACKS are on */
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if( argv[1]==0 || argv[3]==0 ){
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corruptSchema(pData, 0);
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return 1;
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}
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iDb = atoi(argv[3]);
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assert( iDb>=0 && iDb<db->nDb );
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if( argv[2] && argv[2][0] ){
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/* Call the parser to process a CREATE TABLE, INDEX or VIEW.
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** But because db->init.busy is set to 1, no VDBE code is generated
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** or executed. All the parser does is build the internal data
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** structures that describe the table, index, or view.
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*/
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char *zErr;
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int rc;
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assert( db->init.busy );
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db->init.iDb = iDb;
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db->init.newTnum = atoi(argv[1]);
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rc = sqlite3_exec(db, argv[2], 0, 0, &zErr);
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db->init.iDb = 0;
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if( SQLITE_OK!=rc ){
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corruptSchema(pData, zErr);
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sqlite3_free(zErr);
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return rc;
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}
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}else{
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/* If the SQL column is blank it means this is an index that
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** was created to be the PRIMARY KEY or to fulfill a UNIQUE
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** constraint for a CREATE TABLE. The index should have already
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** been created when we processed the CREATE TABLE. All we have
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** to do here is record the root page number for that index.
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*/
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Index *pIndex;
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pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zName);
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if( pIndex==0 || pIndex->tnum!=0 ){
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/* This can occur if there exists an index on a TEMP table which
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** has the same name as another index on a permanent index. Since
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** the permanent table is hidden by the TEMP table, we can also
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** safely ignore the index on the permanent table.
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*/
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/* Do Nothing */;
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}else{
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pIndex->tnum = atoi(argv[1]);
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}
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}
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return 0;
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}
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/*
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** Attempt to read the database schema and initialize internal
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** data structures for a single database file. The index of the
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** database file is given by iDb. iDb==0 is used for the main
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** database. iDb==1 should never be used. iDb>=2 is used for
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** auxiliary databases. Return one of the SQLITE_ error codes to
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** indicate success or failure.
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*/
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static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
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int rc;
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BtCursor *curMain;
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int size;
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Table *pTab;
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char const *azArg[5];
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char zDbNum[30];
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int meta[10];
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InitData initData;
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char const *zMasterSchema;
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char const *zMasterName = SCHEMA_TABLE(iDb);
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/*
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** The master database table has a structure like this
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*/
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static const char master_schema[] =
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"CREATE TABLE sqlite_master(\n"
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" type text,\n"
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" name text,\n"
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" tbl_name text,\n"
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" rootpage integer,\n"
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" sql text\n"
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")"
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;
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#ifndef SQLITE_OMIT_TEMPDB
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static const char temp_master_schema[] =
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"CREATE TEMP TABLE sqlite_temp_master(\n"
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" type text,\n"
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" name text,\n"
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" tbl_name text,\n"
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" rootpage integer,\n"
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" sql text\n"
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")"
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;
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#else
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#define temp_master_schema 0
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#endif
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assert( iDb>=0 && iDb<db->nDb );
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/* zMasterSchema and zInitScript are set to point at the master schema
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** and initialisation script appropriate for the database being
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** initialised. zMasterName is the name of the master table.
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*/
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if( !OMIT_TEMPDB && iDb==1 ){
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zMasterSchema = temp_master_schema;
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}else{
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zMasterSchema = master_schema;
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}
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zMasterName = SCHEMA_TABLE(iDb);
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/* Construct the schema tables. */
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sqlite3SafetyOff(db);
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azArg[0] = zMasterName;
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azArg[1] = "1";
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azArg[2] = zMasterSchema;
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sprintf(zDbNum, "%d", iDb);
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azArg[3] = zDbNum;
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azArg[4] = 0;
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initData.db = db;
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initData.pzErrMsg = pzErrMsg;
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rc = sqlite3InitCallback(&initData, 4, (char **)azArg, 0);
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if( rc!=SQLITE_OK ){
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sqlite3SafetyOn(db);
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return rc;
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}
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pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName);
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if( pTab ){
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pTab->readOnly = 1;
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}
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sqlite3SafetyOn(db);
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/* Create a cursor to hold the database open
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*/
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if( db->aDb[iDb].pBt==0 ){
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if( !OMIT_TEMPDB && iDb==1 ) DbSetProperty(db, 1, DB_SchemaLoaded);
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return SQLITE_OK;
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}
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rc = sqlite3BtreeCursor(db->aDb[iDb].pBt, MASTER_ROOT, 0, 0, 0, &curMain);
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if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){
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sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
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return rc;
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}
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/* Get the database meta information.
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**
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** Meta values are as follows:
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** meta[0] Schema cookie. Changes with each schema change.
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** meta[1] File format of schema layer.
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** meta[2] Size of the page cache.
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** meta[3] Use freelist if 0. Autovacuum if greater than zero.
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** meta[4] Db text encoding. 1:UTF-8 3:UTF-16 LE 4:UTF-16 BE
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** meta[5] The user cookie. Used by the application.
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** meta[6]
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** meta[7]
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** meta[8]
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** meta[9]
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**
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** Note: The hash defined SQLITE_UTF* symbols in sqliteInt.h correspond to
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** the possible values of meta[4].
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*/
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if( rc==SQLITE_OK ){
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int i;
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for(i=0; rc==SQLITE_OK && i<sizeof(meta)/sizeof(meta[0]); i++){
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rc = sqlite3BtreeGetMeta(db->aDb[iDb].pBt, i+1, (u32 *)&meta[i]);
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}
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if( rc ){
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sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
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sqlite3BtreeCloseCursor(curMain);
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return rc;
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}
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}else{
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memset(meta, 0, sizeof(meta));
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}
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db->aDb[iDb].schema_cookie = meta[0];
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/* If opening a non-empty database, check the text encoding. For the
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** main database, set sqlite3.enc to the encoding of the main database.
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** For an attached db, it is an error if the encoding is not the same
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** as sqlite3.enc.
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*/
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if( meta[4] ){ /* text encoding */
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if( iDb==0 ){
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/* If opening the main database, set db->enc. */
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db->enc = (u8)meta[4];
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db->pDfltColl = sqlite3FindCollSeq(db, db->enc, "BINARY", 6, 0);
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}else{
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/* If opening an attached database, the encoding much match db->enc */
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if( meta[4]!=db->enc ){
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sqlite3BtreeCloseCursor(curMain);
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sqlite3SetString(pzErrMsg, "attached databases must use the same"
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" text encoding as main database", (char*)0);
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return SQLITE_ERROR;
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}
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}
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}
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size = meta[2];
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if( size==0 ){ size = MAX_PAGES; }
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db->aDb[iDb].cache_size = size;
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if( iDb==0 ){
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db->file_format = meta[1];
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if( db->file_format==0 ){
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/* This happens if the database was initially empty */
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db->file_format = 1;
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}
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if( db->file_format==2 || db->file_format==3 ){
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/* File format 2 is treated exactly as file format 1. New
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** databases are created with file format 1.
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*/
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db->file_format = 1;
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}
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}
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/*
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** file_format==1 Version 3.0.0.
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** file_format==2 Version 3.1.3.
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** file_format==3 Version 3.1.4.
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**
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** Version 3.0 can only use files with file_format==1. Version 3.1.3
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** can read and write files with file_format==1 or file_format==2.
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** Version 3.1.4 can read and write file formats 1, 2 and 3.
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*/
|
||||
if( meta[1]>3 ){
|
||||
sqlite3BtreeCloseCursor(curMain);
|
||||
sqlite3SetString(pzErrMsg, "unsupported file format", (char*)0);
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
|
||||
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->aDb[iDb].cache_size);
|
||||
|
||||
/* Read the schema information out of the schema tables
|
||||
*/
|
||||
assert( db->init.busy );
|
||||
if( rc==SQLITE_EMPTY ){
|
||||
/* For an empty database, there is nothing to read */
|
||||
rc = SQLITE_OK;
|
||||
}else{
|
||||
char *zSql;
|
||||
zSql = sqlite3MPrintf(
|
||||
"SELECT name, rootpage, sql, '%s' FROM '%q'.%s",
|
||||
zDbNum, db->aDb[iDb].zName, zMasterName);
|
||||
sqlite3SafetyOff(db);
|
||||
rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
|
||||
sqlite3SafetyOn(db);
|
||||
sqliteFree(zSql);
|
||||
sqlite3BtreeCloseCursor(curMain);
|
||||
}
|
||||
if( sqlite3_malloc_failed ){
|
||||
sqlite3SetString(pzErrMsg, "out of memory", (char*)0);
|
||||
rc = SQLITE_NOMEM;
|
||||
sqlite3ResetInternalSchema(db, 0);
|
||||
}
|
||||
if( rc==SQLITE_OK ){
|
||||
DbSetProperty(db, iDb, DB_SchemaLoaded);
|
||||
}else{
|
||||
sqlite3ResetInternalSchema(db, iDb);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
** Initialize all database files - the main database file, the file
|
||||
** used to store temporary tables, and any additional database files
|
||||
** created using ATTACH statements. Return a success code. If an
|
||||
** error occurs, write an error message into *pzErrMsg.
|
||||
**
|
||||
** After the database is initialized, the SQLITE_Initialized
|
||||
** bit is set in the flags field of the sqlite structure.
|
||||
*/
|
||||
int sqlite3Init(sqlite3 *db, char **pzErrMsg){
|
||||
int i, rc;
|
||||
|
||||
if( db->init.busy ) return SQLITE_OK;
|
||||
assert( (db->flags & SQLITE_Initialized)==0 );
|
||||
rc = SQLITE_OK;
|
||||
db->init.busy = 1;
|
||||
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
|
||||
if( DbHasProperty(db, i, DB_SchemaLoaded) || i==1 ) continue;
|
||||
rc = sqlite3InitOne(db, i, pzErrMsg);
|
||||
if( rc ){
|
||||
sqlite3ResetInternalSchema(db, i);
|
||||
}
|
||||
}
|
||||
|
||||
/* Once all the other databases have been initialised, load the schema
|
||||
** for the TEMP database. This is loaded last, as the TEMP database
|
||||
** schema may contain references to objects in other databases.
|
||||
*/
|
||||
#ifndef SQLITE_OMIT_TEMPDB
|
||||
if( rc==SQLITE_OK && db->nDb>1 && !DbHasProperty(db, 1, DB_SchemaLoaded) ){
|
||||
rc = sqlite3InitOne(db, 1, pzErrMsg);
|
||||
if( rc ){
|
||||
sqlite3ResetInternalSchema(db, 1);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
db->init.busy = 0;
|
||||
if( rc==SQLITE_OK ){
|
||||
db->flags |= SQLITE_Initialized;
|
||||
sqlite3CommitInternalChanges(db);
|
||||
}
|
||||
|
||||
if( rc!=SQLITE_OK ){
|
||||
db->flags &= ~SQLITE_Initialized;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
** This routine is a no-op if the database schema is already initialised.
|
||||
** Otherwise, the schema is loaded. An error code is returned.
|
||||
*/
|
||||
int sqlite3ReadSchema(Parse *pParse){
|
||||
int rc = SQLITE_OK;
|
||||
sqlite3 *db = pParse->db;
|
||||
if( !db->init.busy ){
|
||||
if( (db->flags & SQLITE_Initialized)==0 ){
|
||||
rc = sqlite3Init(db, &pParse->zErrMsg);
|
||||
}
|
||||
}
|
||||
assert( rc!=SQLITE_OK || (db->flags & SQLITE_Initialized)||db->init.busy );
|
||||
if( rc!=SQLITE_OK ){
|
||||
pParse->rc = rc;
|
||||
pParse->nErr++;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
** The version of the library
|
||||
*/
|
||||
@ -1025,154 +665,6 @@ int sqlite3_errcode(sqlite3 *db){
|
||||
return db->errCode;
|
||||
}
|
||||
|
||||
/*
|
||||
** Check schema cookies in all databases. If any cookie is out
|
||||
** of date, return 0. If all schema cookies are current, return 1.
|
||||
*/
|
||||
static int schemaIsValid(sqlite3 *db){
|
||||
int iDb;
|
||||
int rc;
|
||||
BtCursor *curTemp;
|
||||
int cookie;
|
||||
int allOk = 1;
|
||||
|
||||
for(iDb=0; allOk && iDb<db->nDb; iDb++){
|
||||
Btree *pBt;
|
||||
pBt = db->aDb[iDb].pBt;
|
||||
if( pBt==0 ) continue;
|
||||
rc = sqlite3BtreeCursor(pBt, MASTER_ROOT, 0, 0, 0, &curTemp);
|
||||
if( rc==SQLITE_OK ){
|
||||
rc = sqlite3BtreeGetMeta(pBt, 1, (u32 *)&cookie);
|
||||
if( rc==SQLITE_OK && cookie!=db->aDb[iDb].schema_cookie ){
|
||||
allOk = 0;
|
||||
}
|
||||
sqlite3BtreeCloseCursor(curTemp);
|
||||
}
|
||||
}
|
||||
return allOk;
|
||||
}
|
||||
|
||||
/*
|
||||
** Compile the UTF-8 encoded SQL statement zSql into a statement handle.
|
||||
*/
|
||||
int sqlite3_prepare(
|
||||
sqlite3 *db, /* Database handle. */
|
||||
const char *zSql, /* UTF-8 encoded SQL statement. */
|
||||
int nBytes, /* Length of zSql in bytes. */
|
||||
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
|
||||
const char** pzTail /* OUT: End of parsed string */
|
||||
){
|
||||
Parse sParse;
|
||||
char *zErrMsg = 0;
|
||||
int rc = SQLITE_OK;
|
||||
|
||||
if( sqlite3_malloc_failed ){
|
||||
return SQLITE_NOMEM;
|
||||
}
|
||||
|
||||
assert( ppStmt );
|
||||
*ppStmt = 0;
|
||||
if( sqlite3SafetyOn(db) ){
|
||||
return SQLITE_MISUSE;
|
||||
}
|
||||
|
||||
memset(&sParse, 0, sizeof(sParse));
|
||||
sParse.db = db;
|
||||
sqlite3RunParser(&sParse, zSql, &zErrMsg);
|
||||
|
||||
if( sqlite3_malloc_failed ){
|
||||
rc = SQLITE_NOMEM;
|
||||
sqlite3RollbackAll(db);
|
||||
sqlite3ResetInternalSchema(db, 0);
|
||||
db->flags &= ~SQLITE_InTrans;
|
||||
goto prepare_out;
|
||||
}
|
||||
if( sParse.rc==SQLITE_DONE ) sParse.rc = SQLITE_OK;
|
||||
if( sParse.rc!=SQLITE_OK && sParse.checkSchema && !schemaIsValid(db) ){
|
||||
sParse.rc = SQLITE_SCHEMA;
|
||||
}
|
||||
if( sParse.rc==SQLITE_SCHEMA ){
|
||||
sqlite3ResetInternalSchema(db, 0);
|
||||
}
|
||||
if( pzTail ) *pzTail = sParse.zTail;
|
||||
rc = sParse.rc;
|
||||
|
||||
#ifndef SQLITE_OMIT_EXPLAIN
|
||||
if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){
|
||||
sqlite3VdbeSetNumCols(sParse.pVdbe, 5);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 0, "addr", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 1, "opcode", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 2, "p1", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 3, "p2", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 4, "p3", P3_STATIC);
|
||||
}
|
||||
#endif
|
||||
|
||||
prepare_out:
|
||||
if( sqlite3SafetyOff(db) ){
|
||||
rc = SQLITE_MISUSE;
|
||||
}
|
||||
if( rc==SQLITE_OK ){
|
||||
*ppStmt = (sqlite3_stmt*)sParse.pVdbe;
|
||||
}else if( sParse.pVdbe ){
|
||||
sqlite3_finalize((sqlite3_stmt*)sParse.pVdbe);
|
||||
}
|
||||
|
||||
if( zErrMsg ){
|
||||
sqlite3Error(db, rc, "%s", zErrMsg);
|
||||
sqliteFree(zErrMsg);
|
||||
}else{
|
||||
sqlite3Error(db, rc, 0);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
#ifndef SQLITE_OMIT_UTF16
|
||||
/*
|
||||
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
|
||||
*/
|
||||
int sqlite3_prepare16(
|
||||
sqlite3 *db, /* Database handle. */
|
||||
const void *zSql, /* UTF-8 encoded SQL statement. */
|
||||
int nBytes, /* Length of zSql in bytes. */
|
||||
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
|
||||
const void **pzTail /* OUT: End of parsed string */
|
||||
){
|
||||
/* This function currently works by first transforming the UTF-16
|
||||
** encoded string to UTF-8, then invoking sqlite3_prepare(). The
|
||||
** tricky bit is figuring out the pointer to return in *pzTail.
|
||||
*/
|
||||
char const *zSql8 = 0;
|
||||
char const *zTail8 = 0;
|
||||
int rc;
|
||||
sqlite3_value *pTmp;
|
||||
|
||||
if( sqlite3SafetyCheck(db) ){
|
||||
return SQLITE_MISUSE;
|
||||
}
|
||||
pTmp = sqlite3GetTransientValue(db);
|
||||
sqlite3ValueSetStr(pTmp, -1, zSql, SQLITE_UTF16NATIVE, SQLITE_STATIC);
|
||||
zSql8 = sqlite3ValueText(pTmp, SQLITE_UTF8);
|
||||
if( !zSql8 ){
|
||||
sqlite3Error(db, SQLITE_NOMEM, 0);
|
||||
return SQLITE_NOMEM;
|
||||
}
|
||||
rc = sqlite3_prepare(db, zSql8, -1, ppStmt, &zTail8);
|
||||
|
||||
if( zTail8 && pzTail ){
|
||||
/* If sqlite3_prepare returns a tail pointer, we calculate the
|
||||
** equivalent pointer into the UTF-16 string by counting the unicode
|
||||
** characters between zSql8 and zTail8, and then returning a pointer
|
||||
** the same number of characters into the UTF-16 string.
|
||||
*/
|
||||
int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
|
||||
*pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
#endif /* SQLITE_OMIT_UTF16 */
|
||||
|
||||
/*
|
||||
** This routine does the work of opening a database on behalf of
|
||||
** sqlite3_open() and sqlite3_open16(). The database filename "zFilename"
|
||||
|
||||
529
src/prepare.c
Normal file
529
src/prepare.c
Normal file
@ -0,0 +1,529 @@
|
||||
/*
|
||||
** 2005 May 25
|
||||
**
|
||||
** 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.
|
||||
**
|
||||
*************************************************************************
|
||||
** This file contains the implementation of the sqlite3_prepare()
|
||||
** interface, and routines that contribute to loading the database schema
|
||||
** from disk.
|
||||
**
|
||||
** $Id: prepare.c,v 1.1 2005/05/25 04:11:56 danielk1977 Exp $
|
||||
*/
|
||||
#include "sqliteInt.h"
|
||||
#include "os.h"
|
||||
#include <ctype.h>
|
||||
|
||||
/*
|
||||
** Fill the InitData structure with an error message that indicates
|
||||
** that the database is corrupt.
|
||||
*/
|
||||
static void corruptSchema(InitData *pData, const char *zExtra){
|
||||
if( !sqlite3_malloc_failed ){
|
||||
sqlite3SetString(pData->pzErrMsg, "malformed database schema",
|
||||
zExtra!=0 && zExtra[0]!=0 ? " - " : (char*)0, zExtra, (char*)0);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** This is the callback routine for the code that initializes the
|
||||
** database. See sqlite3Init() below for additional information.
|
||||
** This routine is also called from the OP_ParseSchema opcode of the VDBE.
|
||||
**
|
||||
** Each callback contains the following information:
|
||||
**
|
||||
** argv[0] = name of thing being created
|
||||
** argv[1] = root page number for table or index. NULL for trigger or view.
|
||||
** argv[2] = SQL text for the CREATE statement.
|
||||
** argv[3] = "1" for temporary files, "0" for main database, "2" or more
|
||||
** for auxiliary database files.
|
||||
**
|
||||
*/
|
||||
int sqlite3InitCallback(void *pInit, int argc, char **argv, char **azColName){
|
||||
InitData *pData = (InitData*)pInit;
|
||||
sqlite3 *db = pData->db;
|
||||
int iDb;
|
||||
|
||||
assert( argc==4 );
|
||||
if( argv==0 ) return 0; /* Might happen if EMPTY_RESULT_CALLBACKS are on */
|
||||
if( argv[1]==0 || argv[3]==0 ){
|
||||
corruptSchema(pData, 0);
|
||||
return 1;
|
||||
}
|
||||
iDb = atoi(argv[3]);
|
||||
assert( iDb>=0 && iDb<db->nDb );
|
||||
if( argv[2] && argv[2][0] ){
|
||||
/* Call the parser to process a CREATE TABLE, INDEX or VIEW.
|
||||
** But because db->init.busy is set to 1, no VDBE code is generated
|
||||
** or executed. All the parser does is build the internal data
|
||||
** structures that describe the table, index, or view.
|
||||
*/
|
||||
char *zErr;
|
||||
int rc;
|
||||
assert( db->init.busy );
|
||||
db->init.iDb = iDb;
|
||||
db->init.newTnum = atoi(argv[1]);
|
||||
rc = sqlite3_exec(db, argv[2], 0, 0, &zErr);
|
||||
db->init.iDb = 0;
|
||||
if( SQLITE_OK!=rc ){
|
||||
corruptSchema(pData, zErr);
|
||||
sqlite3_free(zErr);
|
||||
return rc;
|
||||
}
|
||||
}else{
|
||||
/* If the SQL column is blank it means this is an index that
|
||||
** was created to be the PRIMARY KEY or to fulfill a UNIQUE
|
||||
** constraint for a CREATE TABLE. The index should have already
|
||||
** been created when we processed the CREATE TABLE. All we have
|
||||
** to do here is record the root page number for that index.
|
||||
*/
|
||||
Index *pIndex;
|
||||
pIndex = sqlite3FindIndex(db, argv[0], db->aDb[iDb].zName);
|
||||
if( pIndex==0 || pIndex->tnum!=0 ){
|
||||
/* This can occur if there exists an index on a TEMP table which
|
||||
** has the same name as another index on a permanent index. Since
|
||||
** the permanent table is hidden by the TEMP table, we can also
|
||||
** safely ignore the index on the permanent table.
|
||||
*/
|
||||
/* Do Nothing */;
|
||||
}else{
|
||||
pIndex->tnum = atoi(argv[1]);
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
** Attempt to read the database schema and initialize internal
|
||||
** data structures for a single database file. The index of the
|
||||
** database file is given by iDb. iDb==0 is used for the main
|
||||
** database. iDb==1 should never be used. iDb>=2 is used for
|
||||
** auxiliary databases. Return one of the SQLITE_ error codes to
|
||||
** indicate success or failure.
|
||||
*/
|
||||
static int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg){
|
||||
int rc;
|
||||
BtCursor *curMain;
|
||||
int size;
|
||||
Table *pTab;
|
||||
char const *azArg[5];
|
||||
char zDbNum[30];
|
||||
int meta[10];
|
||||
InitData initData;
|
||||
char const *zMasterSchema;
|
||||
char const *zMasterName = SCHEMA_TABLE(iDb);
|
||||
|
||||
/*
|
||||
** The master database table has a structure like this
|
||||
*/
|
||||
static const char master_schema[] =
|
||||
"CREATE TABLE sqlite_master(\n"
|
||||
" type text,\n"
|
||||
" name text,\n"
|
||||
" tbl_name text,\n"
|
||||
" rootpage integer,\n"
|
||||
" sql text\n"
|
||||
")"
|
||||
;
|
||||
#ifndef SQLITE_OMIT_TEMPDB
|
||||
static const char temp_master_schema[] =
|
||||
"CREATE TEMP TABLE sqlite_temp_master(\n"
|
||||
" type text,\n"
|
||||
" name text,\n"
|
||||
" tbl_name text,\n"
|
||||
" rootpage integer,\n"
|
||||
" sql text\n"
|
||||
")"
|
||||
;
|
||||
#else
|
||||
#define temp_master_schema 0
|
||||
#endif
|
||||
|
||||
assert( iDb>=0 && iDb<db->nDb );
|
||||
|
||||
/* zMasterSchema and zInitScript are set to point at the master schema
|
||||
** and initialisation script appropriate for the database being
|
||||
** initialised. zMasterName is the name of the master table.
|
||||
*/
|
||||
if( !OMIT_TEMPDB && iDb==1 ){
|
||||
zMasterSchema = temp_master_schema;
|
||||
}else{
|
||||
zMasterSchema = master_schema;
|
||||
}
|
||||
zMasterName = SCHEMA_TABLE(iDb);
|
||||
|
||||
/* Construct the schema tables. */
|
||||
sqlite3SafetyOff(db);
|
||||
azArg[0] = zMasterName;
|
||||
azArg[1] = "1";
|
||||
azArg[2] = zMasterSchema;
|
||||
sprintf(zDbNum, "%d", iDb);
|
||||
azArg[3] = zDbNum;
|
||||
azArg[4] = 0;
|
||||
initData.db = db;
|
||||
initData.pzErrMsg = pzErrMsg;
|
||||
rc = sqlite3InitCallback(&initData, 4, (char **)azArg, 0);
|
||||
if( rc!=SQLITE_OK ){
|
||||
sqlite3SafetyOn(db);
|
||||
return rc;
|
||||
}
|
||||
pTab = sqlite3FindTable(db, zMasterName, db->aDb[iDb].zName);
|
||||
if( pTab ){
|
||||
pTab->readOnly = 1;
|
||||
}
|
||||
sqlite3SafetyOn(db);
|
||||
|
||||
/* Create a cursor to hold the database open
|
||||
*/
|
||||
if( db->aDb[iDb].pBt==0 ){
|
||||
if( !OMIT_TEMPDB && iDb==1 ) DbSetProperty(db, 1, DB_SchemaLoaded);
|
||||
return SQLITE_OK;
|
||||
}
|
||||
rc = sqlite3BtreeCursor(db->aDb[iDb].pBt, MASTER_ROOT, 0, 0, 0, &curMain);
|
||||
if( rc!=SQLITE_OK && rc!=SQLITE_EMPTY ){
|
||||
sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/* Get the database meta information.
|
||||
**
|
||||
** Meta values are as follows:
|
||||
** meta[0] Schema cookie. Changes with each schema change.
|
||||
** meta[1] File format of schema layer.
|
||||
** meta[2] Size of the page cache.
|
||||
** meta[3] Use freelist if 0. Autovacuum if greater than zero.
|
||||
** meta[4] Db text encoding. 1:UTF-8 3:UTF-16 LE 4:UTF-16 BE
|
||||
** meta[5] The user cookie. Used by the application.
|
||||
** meta[6]
|
||||
** meta[7]
|
||||
** meta[8]
|
||||
** meta[9]
|
||||
**
|
||||
** Note: The hash defined SQLITE_UTF* symbols in sqliteInt.h correspond to
|
||||
** the possible values of meta[4].
|
||||
*/
|
||||
if( rc==SQLITE_OK ){
|
||||
int i;
|
||||
for(i=0; rc==SQLITE_OK && i<sizeof(meta)/sizeof(meta[0]); i++){
|
||||
rc = sqlite3BtreeGetMeta(db->aDb[iDb].pBt, i+1, (u32 *)&meta[i]);
|
||||
}
|
||||
if( rc ){
|
||||
sqlite3SetString(pzErrMsg, sqlite3ErrStr(rc), (char*)0);
|
||||
sqlite3BtreeCloseCursor(curMain);
|
||||
return rc;
|
||||
}
|
||||
}else{
|
||||
memset(meta, 0, sizeof(meta));
|
||||
}
|
||||
db->aDb[iDb].schema_cookie = meta[0];
|
||||
|
||||
/* If opening a non-empty database, check the text encoding. For the
|
||||
** main database, set sqlite3.enc to the encoding of the main database.
|
||||
** For an attached db, it is an error if the encoding is not the same
|
||||
** as sqlite3.enc.
|
||||
*/
|
||||
if( meta[4] ){ /* text encoding */
|
||||
if( iDb==0 ){
|
||||
/* If opening the main database, set db->enc. */
|
||||
db->enc = (u8)meta[4];
|
||||
db->pDfltColl = sqlite3FindCollSeq(db, db->enc, "BINARY", 6, 0);
|
||||
}else{
|
||||
/* If opening an attached database, the encoding much match db->enc */
|
||||
if( meta[4]!=db->enc ){
|
||||
sqlite3BtreeCloseCursor(curMain);
|
||||
sqlite3SetString(pzErrMsg, "attached databases must use the same"
|
||||
" text encoding as main database", (char*)0);
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
size = meta[2];
|
||||
if( size==0 ){ size = MAX_PAGES; }
|
||||
db->aDb[iDb].cache_size = size;
|
||||
|
||||
if( iDb==0 ){
|
||||
db->file_format = meta[1];
|
||||
if( db->file_format==0 ){
|
||||
/* This happens if the database was initially empty */
|
||||
db->file_format = 1;
|
||||
}
|
||||
|
||||
if( db->file_format==2 || db->file_format==3 ){
|
||||
/* File format 2 is treated exactly as file format 1. New
|
||||
** databases are created with file format 1.
|
||||
*/
|
||||
db->file_format = 1;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** file_format==1 Version 3.0.0.
|
||||
** file_format==2 Version 3.1.3.
|
||||
** file_format==3 Version 3.1.4.
|
||||
**
|
||||
** Version 3.0 can only use files with file_format==1. Version 3.1.3
|
||||
** can read and write files with file_format==1 or file_format==2.
|
||||
** Version 3.1.4 can read and write file formats 1, 2 and 3.
|
||||
*/
|
||||
if( meta[1]>3 ){
|
||||
sqlite3BtreeCloseCursor(curMain);
|
||||
sqlite3SetString(pzErrMsg, "unsupported file format", (char*)0);
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
|
||||
sqlite3BtreeSetCacheSize(db->aDb[iDb].pBt, db->aDb[iDb].cache_size);
|
||||
|
||||
/* Read the schema information out of the schema tables
|
||||
*/
|
||||
assert( db->init.busy );
|
||||
if( rc==SQLITE_EMPTY ){
|
||||
/* For an empty database, there is nothing to read */
|
||||
rc = SQLITE_OK;
|
||||
}else{
|
||||
char *zSql;
|
||||
zSql = sqlite3MPrintf(
|
||||
"SELECT name, rootpage, sql, '%s' FROM '%q'.%s",
|
||||
zDbNum, db->aDb[iDb].zName, zMasterName);
|
||||
sqlite3SafetyOff(db);
|
||||
rc = sqlite3_exec(db, zSql, sqlite3InitCallback, &initData, 0);
|
||||
sqlite3SafetyOn(db);
|
||||
sqliteFree(zSql);
|
||||
sqlite3BtreeCloseCursor(curMain);
|
||||
}
|
||||
if( sqlite3_malloc_failed ){
|
||||
sqlite3SetString(pzErrMsg, "out of memory", (char*)0);
|
||||
rc = SQLITE_NOMEM;
|
||||
sqlite3ResetInternalSchema(db, 0);
|
||||
}
|
||||
if( rc==SQLITE_OK ){
|
||||
DbSetProperty(db, iDb, DB_SchemaLoaded);
|
||||
}else{
|
||||
sqlite3ResetInternalSchema(db, iDb);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
** Initialize all database files - the main database file, the file
|
||||
** used to store temporary tables, and any additional database files
|
||||
** created using ATTACH statements. Return a success code. If an
|
||||
** error occurs, write an error message into *pzErrMsg.
|
||||
**
|
||||
** After the database is initialized, the SQLITE_Initialized
|
||||
** bit is set in the flags field of the sqlite structure.
|
||||
*/
|
||||
int sqlite3Init(sqlite3 *db, char **pzErrMsg){
|
||||
int i, rc;
|
||||
|
||||
if( db->init.busy ) return SQLITE_OK;
|
||||
assert( (db->flags & SQLITE_Initialized)==0 );
|
||||
rc = SQLITE_OK;
|
||||
db->init.busy = 1;
|
||||
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
|
||||
if( DbHasProperty(db, i, DB_SchemaLoaded) || i==1 ) continue;
|
||||
rc = sqlite3InitOne(db, i, pzErrMsg);
|
||||
if( rc ){
|
||||
sqlite3ResetInternalSchema(db, i);
|
||||
}
|
||||
}
|
||||
|
||||
/* Once all the other databases have been initialised, load the schema
|
||||
** for the TEMP database. This is loaded last, as the TEMP database
|
||||
** schema may contain references to objects in other databases.
|
||||
*/
|
||||
#ifndef SQLITE_OMIT_TEMPDB
|
||||
if( rc==SQLITE_OK && db->nDb>1 && !DbHasProperty(db, 1, DB_SchemaLoaded) ){
|
||||
rc = sqlite3InitOne(db, 1, pzErrMsg);
|
||||
if( rc ){
|
||||
sqlite3ResetInternalSchema(db, 1);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
db->init.busy = 0;
|
||||
if( rc==SQLITE_OK ){
|
||||
db->flags |= SQLITE_Initialized;
|
||||
sqlite3CommitInternalChanges(db);
|
||||
}
|
||||
|
||||
if( rc!=SQLITE_OK ){
|
||||
db->flags &= ~SQLITE_Initialized;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
** This routine is a no-op if the database schema is already initialised.
|
||||
** Otherwise, the schema is loaded. An error code is returned.
|
||||
*/
|
||||
int sqlite3ReadSchema(Parse *pParse){
|
||||
int rc = SQLITE_OK;
|
||||
sqlite3 *db = pParse->db;
|
||||
if( !db->init.busy ){
|
||||
if( (db->flags & SQLITE_Initialized)==0 ){
|
||||
rc = sqlite3Init(db, &pParse->zErrMsg);
|
||||
}
|
||||
}
|
||||
assert( rc!=SQLITE_OK || (db->flags & SQLITE_Initialized)||db->init.busy );
|
||||
if( rc!=SQLITE_OK ){
|
||||
pParse->rc = rc;
|
||||
pParse->nErr++;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Check schema cookies in all databases. If any cookie is out
|
||||
** of date, return 0. If all schema cookies are current, return 1.
|
||||
*/
|
||||
static int schemaIsValid(sqlite3 *db){
|
||||
int iDb;
|
||||
int rc;
|
||||
BtCursor *curTemp;
|
||||
int cookie;
|
||||
int allOk = 1;
|
||||
|
||||
for(iDb=0; allOk && iDb<db->nDb; iDb++){
|
||||
Btree *pBt;
|
||||
pBt = db->aDb[iDb].pBt;
|
||||
if( pBt==0 ) continue;
|
||||
rc = sqlite3BtreeCursor(pBt, MASTER_ROOT, 0, 0, 0, &curTemp);
|
||||
if( rc==SQLITE_OK ){
|
||||
rc = sqlite3BtreeGetMeta(pBt, 1, (u32 *)&cookie);
|
||||
if( rc==SQLITE_OK && cookie!=db->aDb[iDb].schema_cookie ){
|
||||
allOk = 0;
|
||||
}
|
||||
sqlite3BtreeCloseCursor(curTemp);
|
||||
}
|
||||
}
|
||||
return allOk;
|
||||
}
|
||||
|
||||
/*
|
||||
** Compile the UTF-8 encoded SQL statement zSql into a statement handle.
|
||||
*/
|
||||
int sqlite3_prepare(
|
||||
sqlite3 *db, /* Database handle. */
|
||||
const char *zSql, /* UTF-8 encoded SQL statement. */
|
||||
int nBytes, /* Length of zSql in bytes. */
|
||||
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
|
||||
const char** pzTail /* OUT: End of parsed string */
|
||||
){
|
||||
Parse sParse;
|
||||
char *zErrMsg = 0;
|
||||
int rc = SQLITE_OK;
|
||||
|
||||
if( sqlite3_malloc_failed ){
|
||||
return SQLITE_NOMEM;
|
||||
}
|
||||
|
||||
assert( ppStmt );
|
||||
*ppStmt = 0;
|
||||
if( sqlite3SafetyOn(db) ){
|
||||
return SQLITE_MISUSE;
|
||||
}
|
||||
|
||||
memset(&sParse, 0, sizeof(sParse));
|
||||
sParse.db = db;
|
||||
sqlite3RunParser(&sParse, zSql, &zErrMsg);
|
||||
|
||||
if( sqlite3_malloc_failed ){
|
||||
rc = SQLITE_NOMEM;
|
||||
sqlite3RollbackAll(db);
|
||||
sqlite3ResetInternalSchema(db, 0);
|
||||
db->flags &= ~SQLITE_InTrans;
|
||||
goto prepare_out;
|
||||
}
|
||||
if( sParse.rc==SQLITE_DONE ) sParse.rc = SQLITE_OK;
|
||||
if( sParse.rc!=SQLITE_OK && sParse.checkSchema && !schemaIsValid(db) ){
|
||||
sParse.rc = SQLITE_SCHEMA;
|
||||
}
|
||||
if( sParse.rc==SQLITE_SCHEMA ){
|
||||
sqlite3ResetInternalSchema(db, 0);
|
||||
}
|
||||
if( pzTail ) *pzTail = sParse.zTail;
|
||||
rc = sParse.rc;
|
||||
|
||||
#ifndef SQLITE_OMIT_EXPLAIN
|
||||
if( rc==SQLITE_OK && sParse.pVdbe && sParse.explain ){
|
||||
sqlite3VdbeSetNumCols(sParse.pVdbe, 5);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 0, "addr", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 1, "opcode", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 2, "p1", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 3, "p2", P3_STATIC);
|
||||
sqlite3VdbeSetColName(sParse.pVdbe, 4, "p3", P3_STATIC);
|
||||
}
|
||||
#endif
|
||||
|
||||
prepare_out:
|
||||
if( sqlite3SafetyOff(db) ){
|
||||
rc = SQLITE_MISUSE;
|
||||
}
|
||||
if( rc==SQLITE_OK ){
|
||||
*ppStmt = (sqlite3_stmt*)sParse.pVdbe;
|
||||
}else if( sParse.pVdbe ){
|
||||
sqlite3_finalize((sqlite3_stmt*)sParse.pVdbe);
|
||||
}
|
||||
|
||||
if( zErrMsg ){
|
||||
sqlite3Error(db, rc, "%s", zErrMsg);
|
||||
sqliteFree(zErrMsg);
|
||||
}else{
|
||||
sqlite3Error(db, rc, 0);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
#ifndef SQLITE_OMIT_UTF16
|
||||
/*
|
||||
** Compile the UTF-16 encoded SQL statement zSql into a statement handle.
|
||||
*/
|
||||
int sqlite3_prepare16(
|
||||
sqlite3 *db, /* Database handle. */
|
||||
const void *zSql, /* UTF-8 encoded SQL statement. */
|
||||
int nBytes, /* Length of zSql in bytes. */
|
||||
sqlite3_stmt **ppStmt, /* OUT: A pointer to the prepared statement */
|
||||
const void **pzTail /* OUT: End of parsed string */
|
||||
){
|
||||
/* This function currently works by first transforming the UTF-16
|
||||
** encoded string to UTF-8, then invoking sqlite3_prepare(). The
|
||||
** tricky bit is figuring out the pointer to return in *pzTail.
|
||||
*/
|
||||
char const *zSql8 = 0;
|
||||
char const *zTail8 = 0;
|
||||
int rc;
|
||||
sqlite3_value *pTmp;
|
||||
|
||||
if( sqlite3SafetyCheck(db) ){
|
||||
return SQLITE_MISUSE;
|
||||
}
|
||||
pTmp = sqlite3GetTransientValue(db);
|
||||
sqlite3ValueSetStr(pTmp, -1, zSql, SQLITE_UTF16NATIVE, SQLITE_STATIC);
|
||||
zSql8 = sqlite3ValueText(pTmp, SQLITE_UTF8);
|
||||
if( !zSql8 ){
|
||||
sqlite3Error(db, SQLITE_NOMEM, 0);
|
||||
return SQLITE_NOMEM;
|
||||
}
|
||||
rc = sqlite3_prepare(db, zSql8, -1, ppStmt, &zTail8);
|
||||
|
||||
if( zTail8 && pzTail ){
|
||||
/* If sqlite3_prepare returns a tail pointer, we calculate the
|
||||
** equivalent pointer into the UTF-16 string by counting the unicode
|
||||
** characters between zSql8 and zTail8, and then returning a pointer
|
||||
** the same number of characters into the UTF-16 string.
|
||||
*/
|
||||
int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
|
||||
*pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
#endif /* SQLITE_OMIT_UTF16 */
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user