Importing usr.bin/xstr
No Minix-specific changes needed. Change-Id: I1aa24aa9293ce56c732bff94b17faeb0f7c232a0
This commit is contained in:
Thomas Cort
parent
b5a2a7adea
commit
3179b9b918
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@ -554,6 +554,7 @@
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./usr/bin/write minix-sys
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./usr/bin/writeisofs minix-sys
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./usr/bin/xargs minix-sys
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./usr/bin/xstr minix-sys
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./usr/bin/xz minix-sys
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./usr/bin/xzcat minix-sys
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./usr/bin/yacc minix-sys
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@ -2119,6 +2120,7 @@
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./usr/man/man1/worldstone.1 minix-sys
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./usr/man/man1/write.1 minix-sys
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./usr/man/man1/xargs.1 minix-sys
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./usr/man/man1/xstr.1 minix-sys
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./usr/man/man1/xz.1 minix-sys
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./usr/man/man1/xzcat.1 minix-sys
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./usr/man/man1/yacc.1 minix-sys
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|
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@ -230,6 +230,7 @@
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2012/10/17 12:00:00,usr.bin/whois
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2012/10/17 12:00:00,usr.bin/write
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2012/10/17 12:00:00,usr.bin/xinstall
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2012/10/17 12:00:00,usr.bin/xstr
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2013/03/15 12:00:00,usr.bin/yes
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2012/02/10 16:16:12,usr.sbin/chroot
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2013/07/10 15:18:55,usr.sbin/i2cscan
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@ -32,7 +32,7 @@ SUBDIR= asa \
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uuidgen vis \
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\
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wc whatis who whois \
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write xargs xinstall yes
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write xargs xinstall xstr yes
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.if !defined(__MINIX)
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SUBDIR+= ../external/zlib/pigz/bin/pigz
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@ -0,0 +1,6 @@
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# $NetBSD: Makefile,v 1.3 1994/11/14 04:56:21 jtc Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/9/93
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PROG= xstr
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.include <bsd.prog.mk>
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@ -0,0 +1,35 @@
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/* $NetBSD: pathnames.h,v 1.4 2003/08/07 11:17:51 agc Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. 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. 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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* @(#)pathnames.h 8.1 (Berkeley) 6/9/93
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* $NetBSD: pathnames.h,v 1.4 2003/08/07 11:17:51 agc Exp $
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*/
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#define _PATH_TMP "/tmp/xstrXXXXXX"
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@ -0,0 +1,211 @@
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.\" $NetBSD: xstr.1,v 1.18 2005/09/11 23:29:44 wiz Exp $
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.\"
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.\" Copyright (c) 1980, 1993
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.\" The Regents of the University of California. 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. 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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.\" @(#)xstr.1 8.2 (Berkeley) 12/30/93
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.\"
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.Dd July 23, 2004
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.Dt XSTR 1
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.Os
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.Sh NAME
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.Nm xstr
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.Nd "extract strings from C programs to implement shared strings"
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.Sh SYNOPSIS
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.Nm
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.Op Fl cv
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.Op Fl l Ar array
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.Op Fl
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.Op Ar
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.Sh DESCRIPTION
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.Nm
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maintains a file
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.Pa strings
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into which strings in component parts of a large program are hashed.
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These strings are replaced with references to this common area.
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This serves to implement shared constant strings, most useful if they
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are also read-only.
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.Pp
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Available options:
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.Bl -tag -width XXlXarrayXX
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.It Fl
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.Nm
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reads from the standard input.
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.It Fl c
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.Nm
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will extract the strings from the C source
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.Ar file
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or the standard input
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.Pq Fl ,
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replacing
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string references by expressions of the form (\*[Am]xstr[number])
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for some number.
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An appropriate declaration of
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.Nm
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is prepended to the file.
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The resulting C text is placed in the file
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.Pa x.c ,
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to then be compiled.
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The strings from this file are placed in the
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.Pa strings
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data base if they are not there already.
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Repeated strings and strings which are suffixes of existing strings
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do not cause changes to the data base.
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.It Fl l Ar array
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Specify the named array in program references to abstracted
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strings.
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The default array name is xstr.
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.It Fl v
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Be verbose.
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.El
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.Pp
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After all components of a large program have been compiled, a file
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.Pa xs.c
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declaring the common
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.Nm
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space can be created by a command of the form:
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.Pp
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.Dl $ xstr
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.Pp
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The file
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.Pa xs.c
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should then be compiled and loaded with the rest
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of the program.
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If possible, the array can be made read-only (shared) saving
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space and swap overhead.
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.Pp
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.Nm
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can also be used on a single file.
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The following command creates files
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.Pa x.c
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and
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.Pa xs.c
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as before, without using or affecting any
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.Pa strings
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file in the same directory:
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.Pp
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.Dl $ xstr name
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.Pp
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It may be useful to run
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.Nm
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after the C preprocessor if any macro definitions yield strings
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or if there is conditional code which contains strings
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which may not, in fact, be needed.
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An appropriate command sequence for running
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.Nm
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after the C preprocessor is:
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.Pp
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.Bd -literal -offset indent
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$ cc \-E name.c | xstr \-c \-
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$ cc \-c x.c
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$ mv x.o name.o
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.Ed
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.Pp
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.Nm
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does not touch the file
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.Pa strings
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unless new items are added, thus
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.Xr make 1
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can avoid remaking
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.Pa xs.o
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unless truly necessary.
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.Sh FILES
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.Bl -tag -width /tmp/xsxx* -compact
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.It Pa strings
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Data base of strings
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.It Pa x.c
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Massaged C source
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.It Pa xs.c
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C source for definition of array `xstr'
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.It Pa /tmp/xs*
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Temp file when `xstr name' doesn't touch
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.Pa strings
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.El
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.Sh SEE ALSO
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.Xr mkstr 1
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 3.0 .
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.Sh BUGS
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If a string is a suffix of another string in the data base,
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but the shorter string is seen first by
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.Nm
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both strings will be placed in the data base, when just
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placing the longer one there will do.
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.Pp
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.Nm
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does not parse the file properly so it does not know not to process:
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.Bd -literal
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char var[] = "const";
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.Ed
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into:
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.Bd -literal
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char var[] = (\*[Am]xstr[N]);
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.Ed
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.Pp
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These must be changed manually into an appropriate initialization for
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the string, or use the following ugly hack.
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.Pp
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Also,
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.Nm
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cannot initialize structures and unions that contain strings.
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Those can be fixed by changing from:
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.Bd -literal
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struct foo {
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int i;
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char buf[10];
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} = {
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1, "foo"
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};
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.Ed
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to:
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.Bd -literal
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struct foo {
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int i;
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char buf[10];
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} = {
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1, { 'f', 'o', 'o', '\e0' }
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};
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.Ed
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.Pp
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The real problem in both cases above is that the compiler knows the size
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of the literal constant so that it can perform the initialization required,
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but when
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.Nm
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changes the literal string to a pointer reference, the size information is
|
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lost.
|
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It would require a real parser to do this right, so the obvious solution is
|
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to fix the program manually to compile, or even better rely on the compiler
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and the linker to merge strings appropriately.
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.Pp
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Finally,
|
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.Nm
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is not very useful these days because most of the string merging is done
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automatically by the compiler and the linker, provided that the strings
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are identical and read-only.
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@ -0,0 +1,569 @@
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/* $NetBSD: xstr.c,v 1.25 2011/09/16 15:39:31 joerg Exp $ */
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/*
|
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* Copyright (c) 1980, 1993
|
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* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
|
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|
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#include <sys/cdefs.h>
|
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#ifndef lint
|
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__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
|
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The Regents of the University of California. All rights reserved.");
|
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#endif /* not lint */
|
||||
|
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#ifndef lint
|
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#if 0
|
||||
static char sccsid[] = "@(#)xstr.c 8.1 (Berkeley) 6/9/93";
|
||||
#else
|
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__RCSID("$NetBSD: xstr.c,v 1.25 2011/09/16 15:39:31 joerg Exp $");
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
|
||||
#include <sys/param.h>
|
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#include <signal.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <stdio.h>
|
||||
#include <ctype.h>
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <err.h>
|
||||
#include "pathnames.h"
|
||||
|
||||
/*
|
||||
* xstr - extract and hash strings in a C program
|
||||
*
|
||||
* Bill Joy UCB
|
||||
* November, 1978
|
||||
*/
|
||||
|
||||
static off_t hashit(const char *, int);
|
||||
__dead static void onintr(int);
|
||||
static off_t yankstr(char **);
|
||||
static int octdigit(char);
|
||||
static void inithash(void);
|
||||
static int fgetNUL(char *, int, FILE *);
|
||||
static int xgetc(FILE *);
|
||||
static void flushsh(void);
|
||||
static void found(int, off_t, const char *);
|
||||
static void prstr(const char *);
|
||||
static void xsdotc(void);
|
||||
static char lastchr(const char *);
|
||||
static int istail(const char *, const char *);
|
||||
static void process(const char *);
|
||||
__dead static void usage(void);
|
||||
|
||||
static off_t tellpt;
|
||||
static off_t mesgpt;
|
||||
static char stringtmpfile[MAXPATHLEN];
|
||||
static const char *strings = "strings";
|
||||
static const char *array = 0;
|
||||
static int cflg;
|
||||
static int vflg;
|
||||
static int readstd;
|
||||
static char linebuf[8192];
|
||||
|
||||
#define BUCKETS 128
|
||||
|
||||
static struct hash {
|
||||
off_t hpt;
|
||||
char *hstr;
|
||||
struct hash *hnext;
|
||||
short hnew;
|
||||
} bucket[BUCKETS];
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
int c;
|
||||
|
||||
while ((c = getopt(argc, argv, "-cvl:")) != -1)
|
||||
switch (c) {
|
||||
case '-':
|
||||
readstd++;
|
||||
break;
|
||||
case 'c':
|
||||
cflg++;
|
||||
break;
|
||||
case 'v':
|
||||
vflg++;
|
||||
break;
|
||||
case 'l':
|
||||
array = optarg;
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
}
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
if (array == 0)
|
||||
array = "xstr";
|
||||
|
||||
if (signal(SIGINT, SIG_IGN) == SIG_DFL)
|
||||
(void)signal(SIGINT, onintr);
|
||||
if (cflg || (argc == 0 && !readstd))
|
||||
inithash();
|
||||
else {
|
||||
int fd;
|
||||
|
||||
snprintf(stringtmpfile, sizeof(stringtmpfile),
|
||||
"%s%s.XXXXXX", _PATH_TMP, "xstr");
|
||||
strings = stringtmpfile;
|
||||
fd = mkstemp(stringtmpfile);
|
||||
if (fd == -1)
|
||||
err(1, "mkstemp failed");
|
||||
close(fd);
|
||||
}
|
||||
while (readstd || argc > 0) {
|
||||
if (freopen("x.c", "w", stdout) == NULL)
|
||||
err(1, "Cannot open `%s'", "x.c");
|
||||
if (!readstd && freopen(argv[0], "r", stdin) == NULL)
|
||||
err(1, "Cannot open `%s'", argv[0]);
|
||||
process("x.c");
|
||||
if (readstd == 0)
|
||||
argc--, argv++;
|
||||
else
|
||||
readstd = 0;
|
||||
};
|
||||
flushsh();
|
||||
if (cflg == 0)
|
||||
xsdotc();
|
||||
if (strings[0] == '/')
|
||||
(void)unlink(strings);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
static void
|
||||
process(const char *name)
|
||||
{
|
||||
char *cp;
|
||||
int c;
|
||||
int incomm = 0;
|
||||
int inasm = 0;
|
||||
int asmparnest = 0;
|
||||
int ret;
|
||||
|
||||
printf("extern char\t%s[];\n", array);
|
||||
for (;;) {
|
||||
if (fgets(linebuf, sizeof linebuf, stdin) == NULL) {
|
||||
if (ferror(stdin))
|
||||
err(1, "Error reading `%s'", name);
|
||||
break;
|
||||
}
|
||||
if (linebuf[0] == '#') {
|
||||
printf("%s", linebuf);
|
||||
continue;
|
||||
}
|
||||
for (cp = linebuf; (c = *cp++);)
|
||||
switch (c) {
|
||||
|
||||
case '"':
|
||||
if (incomm || inasm)
|
||||
goto def;
|
||||
if ((ret = (int) yankstr(&cp)) == -1)
|
||||
goto out;
|
||||
printf("(&%s[%d])", array, ret);
|
||||
break;
|
||||
|
||||
case '\'':
|
||||
if (incomm || inasm)
|
||||
goto def;
|
||||
putchar(c);
|
||||
if (*cp)
|
||||
putchar(*cp++);
|
||||
break;
|
||||
|
||||
case '/':
|
||||
if (incomm || *cp != '*')
|
||||
goto def;
|
||||
incomm = 1;
|
||||
cp++;
|
||||
printf("/*");
|
||||
continue;
|
||||
|
||||
case '*':
|
||||
if (incomm && *cp == '/') {
|
||||
incomm = 0;
|
||||
cp++;
|
||||
printf("*/");
|
||||
continue;
|
||||
}
|
||||
goto def;
|
||||
|
||||
case '(':
|
||||
if (!incomm && inasm)
|
||||
asmparnest++;
|
||||
goto def;
|
||||
|
||||
case ')':
|
||||
if (!incomm && inasm && !--asmparnest)
|
||||
inasm = 0;
|
||||
goto def;
|
||||
|
||||
case '_':
|
||||
if (incomm || inasm)
|
||||
goto def;
|
||||
if (!strncmp(cp, "_asm", 4)) {
|
||||
cp += 4;
|
||||
printf("__asm");
|
||||
if (!strncmp(cp, "__", 2)) {
|
||||
cp += 2;
|
||||
printf("__");
|
||||
}
|
||||
if (isalnum((unsigned char)*cp) ||
|
||||
*cp == '_')
|
||||
goto def;
|
||||
asmparnest = 0;
|
||||
inasm = 1;
|
||||
} else
|
||||
goto def;
|
||||
break;
|
||||
def:
|
||||
default:
|
||||
putchar(c);
|
||||
break;
|
||||
}
|
||||
}
|
||||
out:
|
||||
if (ferror(stdout)) {
|
||||
warn("Error reading `%s'", "x.c");
|
||||
onintr(1);
|
||||
}
|
||||
}
|
||||
|
||||
static off_t
|
||||
yankstr(char **cpp)
|
||||
{
|
||||
char *cp = *cpp;
|
||||
int c, ch;
|
||||
char *dbuf, *dp, *edp;
|
||||
const char *tp;
|
||||
off_t hash;
|
||||
size_t bsiz = BUFSIZ;
|
||||
|
||||
if ((dp = dbuf = malloc(bsiz)) == NULL)
|
||||
err(1, "malloc");
|
||||
edp = dbuf + bsiz;
|
||||
|
||||
while ((c = *cp++) != '\0') {
|
||||
switch (c) {
|
||||
|
||||
case '"':
|
||||
/* Look for a concatenated string */
|
||||
for (;;) {
|
||||
while (isspace((unsigned char)*cp))
|
||||
cp++;
|
||||
if (*cp == '\0') {
|
||||
if (fgets(linebuf,
|
||||
sizeof linebuf, stdin) == NULL) {
|
||||
if (ferror(stdin))
|
||||
err(1,
|
||||
"Error reading `x.c'");
|
||||
goto out;
|
||||
}
|
||||
cp = linebuf;
|
||||
} else {
|
||||
if (*cp == '"') {
|
||||
cp++;
|
||||
if (*cp == '"') {
|
||||
cp++;
|
||||
continue;
|
||||
} else {
|
||||
c = *cp++;
|
||||
goto gotc;
|
||||
}
|
||||
} else {
|
||||
cp++;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
}
|
||||
/*NOTREACHED*/
|
||||
case '\\':
|
||||
c = *cp++;
|
||||
if (c == 0)
|
||||
break;
|
||||
if (c == '\n') {
|
||||
if (fgets(linebuf, sizeof linebuf, stdin)
|
||||
== NULL) {
|
||||
if (ferror(stdin))
|
||||
err(1, "Error reading `x.c'");
|
||||
return(-1);
|
||||
}
|
||||
cp = linebuf;
|
||||
continue;
|
||||
}
|
||||
for (tp = "b\bt\tr\rn\nf\f\\\\\"\""; (ch = *tp++); tp++)
|
||||
if (c == ch) {
|
||||
c = *tp;
|
||||
goto gotc;
|
||||
}
|
||||
if (!octdigit(c)) {
|
||||
*dp++ = '\\';
|
||||
break;
|
||||
}
|
||||
c -= '0';
|
||||
if (!octdigit(*cp))
|
||||
break;
|
||||
c <<= 3, c += *cp++ - '0';
|
||||
if (!octdigit(*cp))
|
||||
break;
|
||||
c <<= 3, c += *cp++ - '0';
|
||||
break;
|
||||
}
|
||||
gotc:
|
||||
if (dp >= edp - 1) {
|
||||
char *nbuf;
|
||||
bsiz += BUFSIZ;
|
||||
if ((nbuf = realloc(dbuf, bsiz)) == NULL) {
|
||||
free(dbuf);
|
||||
err(1, "realloc");
|
||||
}
|
||||
dp = nbuf + (dp - dbuf);
|
||||
edp = nbuf + bsiz;
|
||||
dbuf = nbuf;
|
||||
}
|
||||
*dp++ = c;
|
||||
}
|
||||
out:
|
||||
*cpp = --cp;
|
||||
*dp = '\0';
|
||||
hash = hashit(dbuf, 1);
|
||||
free(dbuf);
|
||||
return hash;
|
||||
}
|
||||
|
||||
static int
|
||||
octdigit(char c)
|
||||
{
|
||||
|
||||
return (isdigit((unsigned char)c) && c != '8' && c != '9');
|
||||
}
|
||||
|
||||
static void
|
||||
inithash(void)
|
||||
{
|
||||
char buf[BUFSIZ];
|
||||
FILE *mesgread = fopen(strings, "r");
|
||||
|
||||
if (mesgread == NULL)
|
||||
return;
|
||||
for (;;) {
|
||||
mesgpt = tellpt;
|
||||
if (fgetNUL(buf, sizeof buf, mesgread) == 0)
|
||||
break;
|
||||
(void)hashit(buf, 0);
|
||||
}
|
||||
(void)fclose(mesgread);
|
||||
}
|
||||
|
||||
static int
|
||||
fgetNUL(char *obuf, int rmdr, FILE *file)
|
||||
{
|
||||
int c;
|
||||
char *buf = obuf;
|
||||
|
||||
c = 0; /* XXXGCC -Wuninitialized */
|
||||
|
||||
while (--rmdr > 0 && (c = xgetc(file) != 0 && c != EOF))
|
||||
*buf++ = c;
|
||||
*buf++ = 0;
|
||||
return (feof(file) || ferror(file)) ? 0 : 1;
|
||||
}
|
||||
|
||||
static int
|
||||
xgetc(FILE *file)
|
||||
{
|
||||
|
||||
tellpt++;
|
||||
return getc(file);
|
||||
}
|
||||
|
||||
|
||||
static off_t
|
||||
hashit(const char *str, int new)
|
||||
{
|
||||
int i;
|
||||
struct hash *hp, *hp0;
|
||||
|
||||
hp = hp0 = &bucket[lastchr(str) & 0177];
|
||||
while (hp->hnext) {
|
||||
hp = hp->hnext;
|
||||
i = istail(str, hp->hstr);
|
||||
if (i >= 0)
|
||||
return (hp->hpt + i);
|
||||
}
|
||||
if ((hp = calloc(1, sizeof (*hp))) == NULL)
|
||||
err(1, NULL);
|
||||
hp->hpt = mesgpt;
|
||||
if ((hp->hstr = strdup(str)) == NULL)
|
||||
err(1, NULL);
|
||||
mesgpt += strlen(hp->hstr) + 1;
|
||||
hp->hnext = hp0->hnext;
|
||||
hp->hnew = new;
|
||||
hp0->hnext = hp;
|
||||
return (hp->hpt);
|
||||
}
|
||||
|
||||
static void
|
||||
flushsh(void)
|
||||
{
|
||||
int i;
|
||||
struct hash *hp;
|
||||
FILE *mesgwrit;
|
||||
int old = 0, new = 0;
|
||||
|
||||
for (i = 0; i < BUCKETS; i++)
|
||||
for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext)
|
||||
if (hp->hnew)
|
||||
new++;
|
||||
else
|
||||
old++;
|
||||
if (new == 0 && old != 0)
|
||||
return;
|
||||
mesgwrit = fopen(strings, old ? "r+" : "w");
|
||||
if (mesgwrit == NULL)
|
||||
err(1, "Cannot open `%s'", strings);
|
||||
for (i = 0; i < BUCKETS; i++)
|
||||
for (hp = bucket[i].hnext; hp != NULL; hp = hp->hnext) {
|
||||
found(hp->hnew, hp->hpt, hp->hstr);
|
||||
if (hp->hnew) {
|
||||
(void)fseek(mesgwrit, hp->hpt, 0);
|
||||
(void)fwrite(hp->hstr, strlen(hp->hstr) + 1, 1,
|
||||
mesgwrit);
|
||||
if (ferror(mesgwrit))
|
||||
err(1, "Error writing `%s'", strings);
|
||||
}
|
||||
}
|
||||
if (fclose(mesgwrit) == EOF)
|
||||
err(1, "Error closing `%s'", strings);
|
||||
}
|
||||
|
||||
static void
|
||||
found(int new, off_t off, const char *str)
|
||||
{
|
||||
if (vflg == 0)
|
||||
return;
|
||||
if (!new)
|
||||
(void)fprintf(stderr, "found at %d:", (int) off);
|
||||
else
|
||||
(void)fprintf(stderr, "new at %d:", (int) off);
|
||||
prstr(str);
|
||||
(void)fprintf(stderr, "\n");
|
||||
}
|
||||
|
||||
static void
|
||||
prstr(const char *cp)
|
||||
{
|
||||
int c;
|
||||
|
||||
while ((c = (*cp++ & 0377)) != '\0')
|
||||
if (c < ' ')
|
||||
(void)fprintf(stderr, "^%c", c + '`');
|
||||
else if (c == 0177)
|
||||
(void)fprintf(stderr, "^?");
|
||||
else if (c > 0200)
|
||||
(void)fprintf(stderr, "\\%03o", c);
|
||||
else
|
||||
(void)fprintf(stderr, "%c", c);
|
||||
}
|
||||
|
||||
static void
|
||||
xsdotc(void)
|
||||
{
|
||||
FILE *strf = fopen(strings, "r");
|
||||
FILE *xdotcf;
|
||||
|
||||
if (strf == NULL)
|
||||
err(1, "Cannot open `%s'", strings);
|
||||
xdotcf = fopen("xs.c", "w");
|
||||
if (xdotcf == NULL)
|
||||
err(1, "Cannot open `%s'", "xs.c");
|
||||
(void)fprintf(xdotcf, "char\t%s[] = {\n", array);
|
||||
for (;;) {
|
||||
int i, c;
|
||||
|
||||
for (i = 0; i < 8; i++) {
|
||||
c = getc(strf);
|
||||
if (ferror(strf)) {
|
||||
warn("Error reading `%s'", strings);
|
||||
onintr(1);
|
||||
}
|
||||
if (feof(strf)) {
|
||||
(void)fprintf(xdotcf, "\n");
|
||||
goto out;
|
||||
}
|
||||
(void)fprintf(xdotcf, "0x%02x,", c);
|
||||
}
|
||||
(void)fprintf(xdotcf, "\n");
|
||||
}
|
||||
out:
|
||||
(void)fprintf(xdotcf, "};\n");
|
||||
(void)fclose(xdotcf);
|
||||
(void)fclose(strf);
|
||||
}
|
||||
|
||||
static char
|
||||
lastchr(const char *cp)
|
||||
{
|
||||
|
||||
while (cp[0] && cp[1])
|
||||
cp++;
|
||||
return (*cp);
|
||||
}
|
||||
|
||||
static int
|
||||
istail(const char *str, const char *of)
|
||||
{
|
||||
int d = strlen(of) - strlen(str);
|
||||
|
||||
if (d < 0 || strcmp(&of[d], str) != 0)
|
||||
return (-1);
|
||||
return (d);
|
||||
}
|
||||
|
||||
static void
|
||||
onintr(int dummy)
|
||||
{
|
||||
|
||||
(void)signal(SIGINT, SIG_IGN);
|
||||
if (strings[0] == '/')
|
||||
(void)unlink(strings);
|
||||
(void)unlink("x.c");
|
||||
(void)unlink("xs.c");
|
||||
exit(dummy);
|
||||
}
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
{
|
||||
|
||||
(void)fprintf(stderr, "usage: %s [-cv] [-l array] [-] [<name> ...]\n",
|
||||
getprogname());
|
||||
exit(1);
|
||||
}
|
||||
Loading…
Reference in New Issue