SQLite

  $(TOP)/src/delete.c \
  $(TOP)/src/expr.c \
  $(TOP)/src/insert.c \
  $(TOP)/src/main.c \
  $(TOP)/src/parse.y \
  $(TOP)/src/select.c \
  $(TOP)/src/shell.c \
  $(TOP)/src/sqlite.h.in \
  $(TOP)/src/sqliteInt.h \
  $(TOP)/src/tclsqlite.c \
  $(TOP)/src/tokenize.c \
  $(TOP)/src/update.c \
  $(TOP)/src/util.c \
  $(TOP)/src/vdbe.c \
  $(TOP)/src/vdbe.h \
  $(TOP)/src/where.c

# This is the default Makefile target.  The objects listed here
# are what get build when you type just "make" with no arguments.
#
all:	sqlite.h libsqlite.a sqlite 

# Generate the file "last_change" which contains the date of change
# of the most recently modified source code file
#
last_change:	$(SRC)
	cat $(SRC) | grep '$$Id: ' | sort +4 | tail -1 \
          | awk '{print $$5,$$6}' >last_change

lemon:	$(TOP)/tool/lemon.c $(TOP)/tool/lempar.c
	$(BCC) -o lemon $(TOP)/tool/lemon.c
	cp $(TOP)/tool/lempar.c .

# Header files used by all library source files.
#
HDR = \
   sqlite.h  \
   $(TOP)/src/sqliteInt.h  \
   $(TOP)/src/dbbe.h  \
   $(TOP)/src/vdbe.h  \
   parse.h

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

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

test:	tclsqlite sqlite
	./tclsqlite $(TOP)/test/all.test

sqlite.tar.gz:	
	pwd=`pwd`; cd $(TOP)/..; tar czf $$pwd/sqlite.tar.gz sqlite

index.html:	$(TOP)/www/index.tcl sqlite.tar.gz last_change
	tclsh $(TOP)/www/index.tcl `cat $(TOP)/VERSION` >index.html

sqlite.html:	$(TOP)/www/sqlite.tcl
	tclsh $(TOP)/www/sqlite.tcl >sqlite.html

c_interface.html:	$(TOP)/www/c_interface.tcl
	tclsh $(TOP)/www/c_interface.tcl >c_interface.html

1.0

/*
** Copyright (c) 1999, 2000 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public
** License as published by the Free Software Foundation; either
** version 2 of the License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
** General Public License for more details.
** 
** You should have received a copy of the GNU General Public
** License along with this library; if not, write to the
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA  02111-1307, USA.
**
** Author contact information:
**   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;

/*
** A function to open a new sqlite database.  
**
** If the database does not exist and mode indicates write
** permission, then a new database is created.  If the database
** does not exist and mode does not indicate write permission,
** then the open fails, an error message generated (if errmsg!=0)
** and the function returns 0.
** 
** If mode does not indicates user write permission, then the 
** database is opened read-only.
**
** The Truth:  As currently implemented, all databases are opened
** for writing all the time.  Maybe someday we will provide the
** ability to open a database readonly.  The mode parameters is
** provide in anticipation of that enhancement.
*/
sqlite *sqlite_open(const char *filename, int mode, char **errmsg);

/*
** A function to close the database.
**
** Call this function with a pointer to a structure that was previously
** returned from sqlite_open() and the corresponding database will by closed.
*/
void sqlite_close(sqlite *);

/*
** The type for a callback function.
*/
typedef int (*sqlite_callback)(void*,int,char**, char**);

/*
** A function to executes one or more statements of SQL.
**
** If one or more of the SQL statements are queries, then
** the callback function specified by the 3rd parameter is
** invoked once for each row of the query result.  This callback
** should normally return 0.  If the callback returns a non-zero
** value then the query is aborted, all subsequent SQL statements
** are skipped and the sqlite_exec() function returns the SQLITE_ABORT.
**
** The 4th parameter is an arbitrary pointer that is passed
** to the callback function as its first parameter.
**
** The 2nd parameter to the callback function is the number of
** columns in the query result.  The 3rd parameter is an array
** of string holding the values for each column.  The 4th parameter
** is an array of strings holding the names of each column.
**
** The callback function may be NULL, even for queries.  A NULL
** callback is not an error.  It just means that no callback
** will be invoked.
**
** If an error occurs while parsing or evaluating the SQL (but
** not while executing the callback) then an appropriate error
** message is written into memory obtained from malloc() and
** *errmsg is made to point to that message.  If errmsg==NULL,
** then no error message is ever written.  The return value is
** SQLITE_ERROR if an error occurs.  The calling function is
** responsible for freeing the memory that holds the error
** message.
**
** If the query could not be executed because a database file is
** locked or busy, then this function returns SQLITE_BUSY.  (This
** behavior can be modified somewhat using the sqlite_busy_handler()
** and sqlite_busy_timeout() functions below.) If the query could 
** not be executed because a file is missing or has incorrect 
** permissions, this function returns SQLITE_ERROR.
*/
int sqlite_exec(
  sqlite*,                      /* An open database */
  char *sql,                    /* SQL to be executed */
  sqlite_callback,              /* Callback function */
  void *,                       /* 1st argument to callback function */
  char **errmsg                 /* Error msg written here */
);

/*
** Return values fro sqlite_exec()
*/
#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 */
#define SQLITE_NOMEM     6    /* A malloc() failed */
#define SQLITE_READONLY  7    /* Attempt to write a readonly database */

/* This function returns true if the given input string comprises
** one or more complete SQL statements.
**
** The algorithm is simple.  If the last token other than spaces
** and comments is a semicolon, then return true.  otherwise return
** false.
*/
int sqlite_complete(const char *sql);

/*
** This routine identifies a callback function that is invoked
** whenever an attempt is made to open a database table that is
** currently locked by another process or thread.  If the busy callback
** is NULL, then sqlite_exec() returns SQLITE_BUSY immediately if
** it finds a locked table.  If the busy callback is not NULL, then
** sqlite_exec() invokes the callback with three arguments.  The
** second argument is the name of the locked table and the third
** argument is the number of times the table has been busy.  If the
** busy callback returns 0, then sqlite_exec() immediately returns
** SQLITE_BUSY.  If the callback returns non-zero, then sqlite_exec()
** tries to open the table again and the cycle repeats.
**
** The default busy callback is NULL.
**
** Sqlite is re-entrant, so the busy handler may start a new query. 
** (It is not clear why anyone would every want to do this, but it
** is allowed, in theory.)  But the busy handler may not close the
** database.  Closing the database from a busy handler will delete 
** data structures out from under the executing query and will 
** probably result in a coredump.
*/
void sqlite_busy_handler(sqlite*, int(*)(void*,const char*,int), void*);

/*
** This routine sets a busy handler that sleeps for a while when a
** table is locked.  The handler will sleep multiple times until 
** at least "ms" milleseconds of sleeping have been done.  After
** "ms" milleseconds of sleeping, the handler returns 0 which
** causes sqlite_exec() to return SQLITE_BUSY.
**
** Calling this routine with an argument less than or equal to zero
** turns off all busy handlers.
*/
void sqlite_busy_timeout(sqlite*, int ms);

#endif /* _SQLITE_H_ */

proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}

chng {2000 Aug 17 (Version 1.0)} {
<li>Change the <b>sqlite</b> program so that it can read
    databases for which it lacks write permission.  (It used to
    refuse all access if it could not write.)</li>
}

chng {2000 Aug 9} {
<li>Treat carriage returns as white space.</li>

#
# Run this TCL script to generate HTML for the index.html file.
#
set rcsid {$Id: index.tcl,v 1.27 2000/08/17 10:22:34 drh Exp $}

puts {<html>
<head><title>SQLite: An SQL Database Engine Built Atop GDBM</title></head>
<body bgcolor=white>
<h1 align=center>SQLite: An SQL Database Engine Built Atop
<a href="http://www.gnu.org/software/gdbm/gdbm.html">GDBM</a></h1>
<p align=center>}
puts "This page was last modified on [lrange $rcsid 3 4] GMT<br>"
set vers [lindex $argv 0]
puts "The latest SQLite version is <b>$vers</b>"
puts " created on [exec cat last_change] GMT"
puts {</p>}

puts {<h2>Introduction</h2>

<p>SQLite is an SQL database engine built on top of the
<a href="http://www.gnu.org/software/gdbm/gdbm.html">GDBM library</a>.
SQLite includes a standalone command-line

<img src="http://www.egroups.com/img/ui/join.gif" border=0 /><br />
Click to subscribe to sqlite</a>
</center>}

puts {<h2>Download</h2>

<p>You can download a tarball containing all source
code for SQLite
}
puts "version $vers"
puts {
(including the TCL scripts that generate the
HTML files for this website) at <a href="sqlite.tar.gz">sqlite.tar.gz</a>.}
puts "This is a [file size sqlite.tar.gz] byte download."

puts {</p>

<p>To build sqlite under Unix, just unwrap the tarball, create a separate
build directory, run configure from the build directory and then
type "make".  For example:</p>

<blockquote><pre>