183 lines
4.7 KiB
Groff
183 lines
4.7 KiB
Groff
.\"
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.\" Copyright (c) 1996, 1997 Shigio Yamaguchi. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Shigio Yamaguchi.
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.\" 4. Neither the name of the author nor the names of any co-contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd Nov 26, 1997
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.Dt BTREEOP 1
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.Os BSD 4
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.Sh NAME
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.Nm btreeop
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.Nd btree database maintenance tool
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.Sh SYNOPSIS
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.Nm btreeop
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.Op Fl A
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.Op Fl C
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.Op Fl D[keyno] Ar key
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.Op Fl K[keyno] Ar key
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.Op Fl L
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.Op Fl k Ar prefix
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.Op Ar dbname
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.Sh DESCRIPTION
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.Nm Btreeop
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execute simple operations for
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.Xr btree 3
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database.
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.Nm Btreeop
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can create database, write record, read record (sequential or indexed) and
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delete record from it.
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Duplicate entries are allowed.
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Multi-key is available but only primary key can use index of
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.Xr btree 3 .
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.Sh OPTIONS
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A capital letter means a command. If no command specified
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then it assume sequential read operation.
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.Bl -tag -width Ds
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.It Fl A
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append records. If database doesn't exist, btreeop creates it.
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.It Fl C
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create database and write records to it.
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.It Fl D[keyno] Ar key
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delete records by the key. By default, keyno is 0 (primary key).
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.It Fl K[keyno] Ar key
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search records by the key. By default, keyno is 0 (primary key).
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.It Fl L
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list all primary keys.
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Following two command lines are identical except that the latter is much faster.
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btreeop | awk '{print $1}' | uniq
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btreeop -L
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.It Fl k Ar prefix
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scan records which have the prefix as a primary key.
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This option is valid only with sequential read operation (-L command or non command).
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Following two command lines are identical except that the latter is much faster.
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btreeop | awk '$1 ~ /^fo/ {print }'
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btreeop -k fo
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.It Ar dbname
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database name. default is 'btree'.
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.Sh DATA FORMAT
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To creat (or append) database,
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.Nm btreeop
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read data from stdin.
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The format of the data is the following.
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Primary-key Secondary-key-1 Secondary-key-2 Data
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(keyno = 0) (keyno = 1) (keyno = 2)
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--------------------------------------------------------------
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main 246 main.c main (){\\n
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func 120 library.c func(a1, a2)\\n
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.
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.
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.
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.El
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.Bl -enum -offset indent
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.It
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All key and data are separated by blank('\\t' or ' ').
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.It
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Key cannot include blank.
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.It
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Data can include blank.
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.It
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Null data not allowed.
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.It
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Additionally, META record is available. META record has a key that start with
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a blank. You can read this record only by indexed read operation (-K option).
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Usage is unlimited by btreeop.
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.El
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.Sh EXAMPLES
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Create database.
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% btreeop -C
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key1 data1
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key2 data2
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key3 data3
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^D
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%
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Append records.
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% btreeop -A
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__.VERSION 2
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key2 data2-2
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^D
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%
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Sequential read.
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% btreeop
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key1 data1
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key2 data2-2
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key2 data2
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key3 data3
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%
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Indexed read.
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% btreeop -K key2
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key2 data2-2
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key2 data2
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% btreeop -K ' __.VERSION'
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__.VERSION 2
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%
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List primary keys.
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% btreeop -L
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key1
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key2
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key3
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%
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Delete record.
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% btreeop -D ' __.VERSION'
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% btreeop -K ' __.VERSION'
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%
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.Sh FILES
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.Bl -tag -width tags -compact
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.It Pa btree
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default database name.
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.El
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.Sh DIAGNOSTICS
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.Nm Btreeop
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exits with a non 0 value if an error occurred, 0 otherwise.
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.Sh SEE ALSO
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.Xr btree 3
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.Sh AUTHOR
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Shigio Yamaguchi (shigio@wafu.netgate.net)
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.Sh HISTORY
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The
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.Nm
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command appeared in FreeBSD 2.2.2.
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