158 lines
4.9 KiB
Groff
158 lines
4.9 KiB
Groff
.\" Copyright (c) 1989, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Ken Arnold.
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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 the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its 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 REGENTS 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 REGENTS 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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.\" @(#)strfile.8 8.1 (Berkeley) 6/9/93
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.\" $FreeBSD$
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.\"
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.Dd June 9, 1993
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.Dt STRFILE 8
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.Os
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.Sh NAME
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.Nm strfile ,
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.Nm unstr
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.Nd "create a random access file for storing strings"
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.Sh SYNOPSIS
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.Nm
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.Op Fl iorsx
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.Op Fl c Ar char
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.Ar source_file
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.Op Ar output_file
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.Nm unstr
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.Ar source_file
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.Sh DESCRIPTION
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.Nm Strfile
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reads a file containing groups of lines separated by a line containing
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a single percent
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.Ql \&%
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sign and creates a data file which contains
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a header structure and a table of file offsets for each group of lines.
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This allows random access of the strings.
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.Pp
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The output file, if not specified on the command line, is named
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.Ar source_file Ns Sy .dat .
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.Pp
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The options are as follows:
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.Bl -tag -width "-c char"
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.It Fl C
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Flag the file as containing comments. This option cases the
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.Dv STR_COMMENTS
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bit in the header
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.Ar str_flags
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field to be set.
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Comments are designated by two delimiter characters at the
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beginning of the line, though strfile does not give any special
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treatment to comment lines.
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.It Fl c Ar char
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Change the delimiting character from the percent sign to
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.Ar char .
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.It Fl i
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Ignore case when ordering the strings.
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.It Fl o
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Order the strings in alphabetical order.
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The offset table will be sorted in the alphabetical order of the
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groups of lines referenced.
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Any initial non-alphanumeric characters are ignored.
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This option causes the
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.Dv STR_ORDERED
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bit in the header
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.Ar str_flags
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field to be set.
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.It Fl r
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Randomize access to the strings.
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Entries in the offset table will be randomly ordered.
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This option causes the
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.Dv STR_RANDOM
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bit in the header
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.Ar str_flags
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field to be set.
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.It Fl s
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Run silently; don't give a summary message when finished.
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.It Fl x
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Note that each alphabetic character in the groups of lines is rotated
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13 positions in a simple caesar cypher.
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This option causes the
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.Dv STR_ROTATED
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bit in the header
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.Ar str_flags
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field to be set.
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.El
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.Pp
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The format of the header is:
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.Bd -literal
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#define VERSION 1
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unsigned long str_version; /* version number */
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unsigned long str_numstr; /* # of strings in the file */
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unsigned long str_longlen; /* length of longest string */
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unsigned long str_shortlen; /* length of shortest string */
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#define STR_RANDOM 0x1 /* randomized pointers */
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#define STR_ORDERED 0x2 /* ordered pointers */
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#define STR_ROTATED 0x4 /* rot-13'd text */
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unsigned long str_flags; /* bit field for flags */
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char str_delim; /* delimiting character */
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.Ed
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.Pp
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All fields are written in network byte order.
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.Pp
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The purpose of
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.Nm unstr
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is to undo the work of
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.Nm .
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It prints out the strings contained in the file
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.Ar source_file
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in the order that they are listed in
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the header file
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.Ar source_file Ns Pa .dat
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to standard output.
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It is possible to create sorted versions of input files by using
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.Fl o
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when
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.Nm
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is run and then using
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.Nm unstr
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to dump them out in the table order.
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.Sh SEE ALSO
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.Xr byteorder 3 ,
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.Xr fortune 6
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.Sh FILES
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.Bl -tag -width strfile.dat -compact
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.It Pa strfile.dat
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default output file.
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.El
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Bx 4.4 .
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