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66 lines
2.4 KiB
Plaintext
66 lines
2.4 KiB
Plaintext
# Compare two strings possibly containing shell variables as version strings.
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# Copyright (c) 2003
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# Derek R. Price, Ximbiot <http://ximbiot.com>,
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# and the Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# ASX_VERSION_COMPARE(VERSION-1, VERSION-2,
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# [ACTION-IF-LESS], [ACTION-IF-EQUAL], [ACTION-IF-GREATER])
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# -----------------------------------------------------------------------------
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# Compare two strings possibly containing shell variables as version strings.
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AC_DEFUN([ASX_VERSION_COMPARE],
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[if test "x[$1]" = "x[$2]"; then
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# the strings are equal. run ACTION-IF-EQUAL and bail
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m4_default([$4], :)
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m4_ifvaln([$3$5], [else
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# first unletter the versions
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# this only works for a single trailing letter
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dnl echo has a double-quoted arg to allow for shell expansion.
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asx_version_1=`echo "[$1]" |
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sed 's/\([abcedfghi]\)/.\1/;
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s/\([jklmnopqrs]\)/.1\1/;
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s/\([tuvwxyz]\)/.2\1/;
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y/abcdefghijklmnopqrstuvwxyz/12345678901234567890123456/;'`
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asx_version_2=`echo "[$2]" |
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sed 's/\([abcedfghi]\)/.\1/;
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s/\([jklmnopqrs]\)/.1\1/;
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s/\([tuvwxyz]\)/.2\1/;
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y/abcdefghijklmnopqrstuvwxyz/12345678901234567890123456/;'`
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asx_count=1
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asx_save_IFS=$IFS
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IFS=.
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asx_retval=-1
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for vsub1 in $asx_version_1; do
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vsub2=`echo "$asx_version_2" |awk -F. "{print \\\$$asx_count}"`
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if test -z "$vsub2" || test $vsub1 -gt $vsub2; then
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asx_retval=1
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break
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elif test $vsub1 -lt $vsub2; then
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break
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fi
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asx_count=`expr $asx_count + 1`
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done
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IFS=$asx_save_IFS
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if test $asx_retval -eq -1; then
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m4_default([$3], :)
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m4_ifval([$5], [else
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$5])
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fi])
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fi
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]) # ASX_VERSION_COMPARE
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