SQLite

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Overview
Comment::-) (CVS 138)
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: c6b71d9b4b09243401072eaa278fd1b9757a9c3d
User & Date: drh 2000-08-22 13:40:19.000
Context
2000-08-22
13:40
:-) (CVS 139) (check-in: 67e2da38c3 user: drh tags: trunk)
13:40
:-) (CVS 138) (check-in: c6b71d9b4b user: drh tags: trunk)
13:27
:-) (CVS 137) (check-in: 5f6559ee7b user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to Makefile.in.
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parse.h:	parse.c

parse.c:	$(TOP)/src/parse.y lemon
	cp $(TOP)/src/parse.y .
	./lemon parse.y

sqlite.h:	$(TOP)/src/sqlite.h.in
	sed s/--VERS--/`cat ${TOP}/VERSION`/ $(TOP)/src/sqlite.h.in >sqlite.h

tokenize.o:	$(TOP)/src/tokenize.c $(HDR)
	$(TCC) $(GDBM_FLAGS) -c $(TOP)/src/tokenize.c

util.o:	$(TOP)/src/util.c $(HDR)
	$(TCC) $(GDBM_FLAGS) -c $(TOP)/src/util.c









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parse.h:	parse.c

parse.c:	$(TOP)/src/parse.y lemon
	cp $(TOP)/src/parse.y .
	./lemon parse.y

sqlite.h:	$(TOP)/src/sqlite.h.in 
	sed -e s/--VERS--/`cat ${TOP}/VERSION`/ $(TOP)/src/sqlite.h.in >sqlite.h

tokenize.o:	$(TOP)/src/tokenize.c $(HDR)
	$(TCC) $(GDBM_FLAGS) -c $(TOP)/src/tokenize.c

util.o:	$(TOP)/src/util.c $(HDR)
	$(TCC) $(GDBM_FLAGS) -c $(TOP)/src/util.c
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Changes to src/main.c.
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**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.16 2000/08/02 13:47:42 drh Exp $
*/
#include "sqliteInt.h"

/*
** This is the callback routine for the code that initializes the
** database.  Each callback contains text of a CREATE TABLE or
** CREATE INDEX statement that must be parsed to yield the internal








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**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.17 2000/08/22 13:40:19 drh Exp $
*/
#include "sqliteInt.h"

/*
** This is the callback routine for the code that initializes the
** database.  Each callback contains text of a CREATE TABLE or
** CREATE INDEX statement that must be parsed to yield the internal
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    db->flags |= SQLITE_Initialized;
  }else{
    sqliteStrRealloc(pzErrMsg);
  }
  return rc;
}






/*
** Open a new SQLite database.  Construct an "sqlite" structure to define
** the state of this database and return a pointer to that structure.
**
** An attempt is made to initialize the in-memory data structures that
** hold the database schema.  But if this fails (because the schema file
** is locked) then that step is deferred until the first call to








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    db->flags |= SQLITE_Initialized;
  }else{
    sqliteStrRealloc(pzErrMsg);
  }
  return rc;
}

/*
** The version of the library
*/
const char sqlite_version[] = SQLITE_VERSION_STRING;

/*
** Open a new SQLite database.  Construct an "sqlite" structure to define
** the state of this database and return a pointer to that structure.
**
** An attempt is made to initialize the in-memory data structures that
** hold the database schema.  But if this fails (because the schema file
** is locked) then that step is deferred until the first call to
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Changes to src/shell.c.
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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains code to implement the "sqlite" command line
** utility for accessing SQLite databases.
**
** $Id: shell.c,v 1.22 2000/08/22 13:27:22 drh Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "sqlite.h"
#include <unistd.h>
#include <ctype.h>








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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This file contains code to implement the "sqlite" command line
** utility for accessing SQLite databases.
**
** $Id: shell.c,v 1.23 2000/08/22 13:40:19 drh Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "sqlite.h"
#include <unistd.h>
#include <ctype.h>
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  }else{
    char *zLine;
    char *zSql = 0;
    int nSql = 0;
    int istty = isatty(0);
    if( istty ){
      printf(

        "Enter \".help\" for instructions\n"

      );
    }
    while( (zLine = one_input_line(zSql, istty))!=0 ){
      if( zLine && zLine[0]=='.' ){
        do_meta_command(zLine, db, &data);
        free(zLine);
        continue;








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  }else{
    char *zLine;
    char *zSql = 0;
    int nSql = 0;
    int istty = isatty(0);
    if( istty ){
      printf(
        "SQLite version %s\n"
        "Enter \".help\" for instructions\n",
        sqlite_version
      );
    }
    while( (zLine = one_input_line(zSql, istty))!=0 ){
      if( zLine && zLine[0]=='.' ){
        do_meta_command(zLine, db, &data);
        free(zLine);
        continue;
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Changes to src/sqlite.h.in.
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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This header file defines the interface that the sqlite library
** presents to client programs.
**
** @(#) $Id: sqlite.h.in,v 1.1 2000/08/17 10:22:34 drh Exp $
*/
#ifndef _SQLITE_H_
#define _SQLITE_H_

/*
** The version of the SQLite library
*/
#define SQLITE_VERSION          --VERS--
#define SQLITE_VERSION_STRING  "--VERS--"







/*
** Each open sqlite database is represented by an instance of the
** following opaque structure.
*/
typedef struct sqlite sqlite;









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**   drh@hwaci.com
**   http://www.hwaci.com/drh/
**
*************************************************************************
** This header file defines the interface that the sqlite library
** presents to client programs.
**
** @(#) $Id: sqlite.h.in,v 1.2 2000/08/22 13:40:20 drh Exp $
*/
#ifndef _SQLITE_H_
#define _SQLITE_H_

/*
** The version of the SQLite library.
*/
#define SQLITE_VERSION         "--VERS--"

/*
** The version string is also compiled into the library so that a program
** can check to make sure that the lib*.a file and the *.h file are from
** the same version.
*/
extern const char sqlite_version[];

/*
** Each open sqlite database is represented by an instance of the
** following opaque structure.
*/
typedef struct sqlite sqlite;
︙︙
Changes to www/c_interface.tcl. 
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#
# Run this Tcl script to generate the sqlite.html file.
#
set rcsid {$Id: c_interface.tcl,v 1.6 2000/07/28 14:32:51 drh Exp $}

puts {<html>
<head>
  <title>The C language interface to the SQLite library</title>
</head>
<body bgcolor=white>
<h1 align=center>




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#
# Run this Tcl script to generate the sqlite.html file.
#
set rcsid {$Id: c_interface.tcl,v 1.7 2000/08/22 13:40:20 drh Exp $}

puts {<html>
<head>
  <title>The C language interface to the SQLite library</title>
</head>
<body bgcolor=white>
<h1 align=center>
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);

int sqlite_complete(const char *sql);

void sqlite_busy_handler(sqlite*, int (*)(void*,const char*,int), void*);

void sqlite_busy_timeout(sqlite*, int ms);



#define SQLITE_OK        0    /* Successful result */
#define SQLITE_INTERNAL  1    /* An internal logic error in SQLite */
#define SQLITE_ERROR     2    /* SQL error or missing database */
#define SQLITE_PERM      3    /* Access permission denied */
#define SQLITE_ABORT     4    /* Callback routine requested an abort */
#define SQLITE_BUSY      5    /* One or more database files are locked */








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);

int sqlite_complete(const char *sql);

void sqlite_busy_handler(sqlite*, int (*)(void*,const char*,int), void*);

void sqlite_busy_timeout(sqlite*, int ms);

const char sqlite_version[];

#define SQLITE_OK        0    /* Successful result */
#define SQLITE_INTERNAL  1    /* An internal logic error in SQLite */
#define SQLITE_ERROR     2    /* SQL error or missing database */
#define SQLITE_PERM      3    /* Access permission denied */
#define SQLITE_ABORT     4    /* Callback routine requested an abort */
#define SQLITE_BUSY      5    /* One or more database files are locked */
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line of input is received, <b>sqlite</b> calls <b>sqlite_complete()</b>
on all input in its buffer.  If <b>sqlite_complete()</b> returns true, 
then <b>sqlite_exec()</b> is called and the input buffer is reset.  If
<b>sqlite_complete()</b> returns false, then the prompt is changed to
the continuation prompt and another line of text is read and added to
the input buffer.</p>











<h2>Changing the libraries reponse to locked files</h2>

<p>The GDBM library supports database locks at the file level.
If a GDBM database file is opened for reading, then that same
file cannot be reopened for writing until all readers have closed
the file.  If a GDBM file is open for writing, then the file cannot
be reopened for reading or writing until it is closed.</p>








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line of input is received, <b>sqlite</b> calls <b>sqlite_complete()</b>
on all input in its buffer.  If <b>sqlite_complete()</b> returns true, 
then <b>sqlite_exec()</b> is called and the input buffer is reset.  If
<b>sqlite_complete()</b> returns false, then the prompt is changed to
the continuation prompt and another line of text is read and added to
the input buffer.</p>

<h2>Library version string</h2>

<p>The SQLite library exports the string constant named
<b>sqlite_version</b> which contains the version number of the
library.  The header file contains a macro SQLITE_VERSION
with the same information.  If desired, a program can compare
the SQLITE_VERSION macro against the <b>sqlite_version</b>
string constant to verify that the version number of the
header file and the library match.</p> 

<h2>Changing the libraries reponse to locked files</h2>

<p>The GDBM library supports database locks at the file level.
If a GDBM database file is opened for reading, then that same
file cannot be reopened for writing until all readers have closed
the file.  If a GDBM file is open for writing, then the file cannot
be reopened for reading or writing until it is closed.</p>
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