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annotate posix-modules @ 13625:c2d737898a4e

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Set PATH_SEPARATOR the same way autoconf does. * gnulib-tool (func_gnulib_dir): Determine the value of PATH_SEPARATOR the same way autoconf-generated configure scripts do. * posix-modules: Likewise.
author Stefano Lattarini <stefano.lattarini@gmail.com>
date Sat, 04 Sep 2010 11:01:27 +0200
parents 88d6d025ee3b
children 97fc9a21a8fb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/bin/sh
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2 #
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3 # Copyright (C) 2002-2008, 2010 Free Software Foundation, Inc.
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4 #
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5 # This program is free software: you can redistribute it and/or modify
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6 # it under the terms of the GNU General Public License as published by
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7 # the Free Software Foundation; either version 3 of the License, or
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8 # (at your option) any later version.
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9 #
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10 # This program is distributed in the hope that it will be useful,
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11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 # GNU General Public License for more details.
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14 #
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15 # You should have received a copy of the GNU General Public License
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16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 #
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18
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19 progname=$0
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20 package=gnulib
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21
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22 # func_usage
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23 # outputs to stdout the --help usage message.
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24 func_usage ()
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25 {
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26 echo "\
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27 Usage: posix-modules
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28
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29 Report bugs to <bug-gnulib@gnu.org>."
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30 }
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31
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32 # func_version
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33 # outputs to stdout the --version message.
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34 func_version ()
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35 {
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36 func_gnulib_dir
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37 if test -d "$gnulib_dir"/.git \
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38 && (git --version) >/dev/null 2>/dev/null \
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39 && (date --version) >/dev/null 2>/dev/null; then
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40 # gnulib checked out from git.
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41 sed_extract_first_date='/^Date/{
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42 s/^Date:[ ]*//p
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43 q
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44 }'
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45 date=`cd "$gnulib_dir" && git log ChangeLog | sed -n -e "$sed_extract_first_date"`
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46 # Turn "Fri Mar 21 07:16:51 2008 -0600" into "Mar 21 2008 07:16:51 -0600".
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47 sed_year_before_time='s/^[^ ]* \([^ ]*\) \([0-9]*\) \([0-9:]*\) \([0-9]*\) /\1 \2 \4 \3 /'
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48 date=`echo "$date" | sed -e "$sed_year_before_time"`
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49 # Use GNU date to compute the time in GMT.
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50 date=`date -d "$date" -u +"%Y-%m-%d %H:%M:%S"`
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51 version=' '`cd "$gnulib_dir" && ./build-aux/git-version-gen /dev/null | sed -e 's/-dirty/-modified/'`
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52 else
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53 if test -d "$gnulib_dir"/CVS \
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54 && (cvs --version) >/dev/null 2>/dev/null; then
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55 # gnulib checked out from CVS.
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56 sed_extract_first_date='/^date: /{
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57 s/^date: \([0-9][0-9][0-9][0-9]\).\([0-9][0-9]\).\([0-9][0-9]\) \([0-9][0-9]:[0-9][0-9]:[0-9][0-9]\).*/\1-\2-\3 \4/p
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58 q
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59 }'
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60 date=`cd "$gnulib_dir" && cvs log -N ChangeLog 2>/dev/null | sed -n -e "$sed_extract_first_date"`
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61 else
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62 # gnulib copy without versioning information.
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63 date=`sed -e 's/ .*//;q' "$gnulib_dir"/ChangeLog`
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64 fi
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65 version=
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66 fi
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67 year=`"$gnulib_dir"/build-aux/mdate-sh "$self_abspathname" | sed 's,^.* ,,'`
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68 echo "\
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69 posix-modules (GNU $package $date)$version
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70 Copyright (C) $year Free Software Foundation, Inc.
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71 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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72 This is free software: you are free to change and redistribute it.
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73 There is NO WARRANTY, to the extent permitted by law.
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74
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75 Written by" "Bruno Haible"
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76 }
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77
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78 # func_exit STATUS
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79 # exits with a given status.
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80 # This function needs to be used, rather than 'exit', when a 'trap' handler is
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81 # in effect that refers to $?.
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82 func_exit ()
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83 {
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84 (exit $1); exit $1
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85 }
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86
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87 # func_gnulib_dir
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88 # locates the directory where the gnulib repository lives
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89 # Input:
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90 # - progname name of this program
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91 # Sets variables
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92 # - self_abspathname absolute pathname of this program
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93 # - gnulib_dir absolute pathname of gnulib repository
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94 func_gnulib_dir ()
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95 {
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96 case "$progname" in
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97 /*) self_abspathname="$progname" ;;
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98 */*) self_abspathname=`pwd`/"$progname" ;;
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99 *)
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100 # Look in $PATH.
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101 # Iterate through the elements of $PATH.
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102 # We use IFS=: instead of
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103 # for d in `echo ":$PATH:" | sed -e 's/:::*/:.:/g' | sed -e 's/:/ /g'`
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104 # because the latter does not work when some PATH element contains spaces.
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105 # We use a canonicalized $pathx instead of $PATH, because empty PATH
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106 # elements are by definition equivalent to '.', however field splitting
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107 # according to IFS=: loses empty fields in many shells:
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108 # - /bin/sh on OSF/1 and Solaris loses all empty fields (at the
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109 # beginning, at the end, and in the middle),
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110 # - /bin/sh on IRIX and /bin/ksh on IRIX and OSF/1 lose empty fields
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111 # at the beginning and at the end,
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112 # - GNU bash, /bin/sh on AIX and HP-UX, and /bin/ksh on AIX, HP-UX,
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113 # Solaris lose empty fields at the end.
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114 # The 'case' statement is an optimization, to avoid evaluating the
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115 # explicit canonicalization command when $PATH contains no empty fields.
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116 self_abspathname=
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117 if test "${PATH_SEPARATOR+set}" != set; then
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118 # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
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119 # contains only /bin. Note that ksh looks also at the FPATH variable,
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120 # so we have to set that as well for the test.
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121 PATH_SEPARATOR=:
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122 (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
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123 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
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124 || PATH_SEPARATOR=';'
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125 }
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126 fi
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127 if test "$PATH_SEPARATOR" = ";"; then
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128 # On Windows, programs are searched in "." before $PATH.
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129 pathx=".;$PATH"
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130 else
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131 # On Unix, we have to convert empty PATH elements to ".".
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132 pathx="$PATH"
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133 case :$PATH: in
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134 *::*)
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135 pathx=`echo ":$PATH:" | sed -e 's/:::*/:.:/g' -e 's/^://' -e 's/:\$//'`
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136 ;;
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137 esac
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138 fi
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139 save_IFS="$IFS"
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140 IFS="$PATH_SEPARATOR"
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141 for d in $pathx; do
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142 IFS="$save_IFS"
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143 test -z "$d" && d=.
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144 if test -x "$d/$progname" && test ! -d "$d/$progname"; then
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145 self_abspathname="$d/$progname"
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146 break
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147 fi
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148 done
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149 IFS="$save_IFS"
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150 if test -z "$self_abspathname"; then
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151 func_fatal_error "could not locate the posix-modules program - how did you invoke it?"
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152 fi
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153 ;;
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154 esac
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155 while test -h "$self_abspathname"; do
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156 # Resolve symbolic link.
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157 linkval=`func_readlink "$self_abspathname"`
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158 test -n "$linkval" || break
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159 case "$linkval" in
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160 /* ) self_abspathname="$linkval" ;;
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161 * ) self_abspathname=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`/"$linkval" ;;
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162 esac
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163 done
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164 gnulib_dir=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`
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165 }
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166
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167 # func_tmpdir
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168 # creates a temporary directory.
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169 # Input:
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170 # - progname name of this program
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171 # Sets variable
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172 # - tmp pathname of freshly created temporary directory
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173 func_tmpdir ()
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174 {
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175 # Use the environment variable TMPDIR, falling back to /tmp. This allows
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176 # users to specify a different temporary directory, for example, if their
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177 # /tmp is filled up or too small.
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178 : ${TMPDIR=/tmp}
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179 {
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180 # Use the mktemp program if available. If not available, hide the error
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181 # message.
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182 tmp=`(umask 077 && mktemp -d "$TMPDIR/glXXXXXX") 2>/dev/null` &&
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183 test -n "$tmp" && test -d "$tmp"
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184 } ||
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185 {
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186 # Use a simple mkdir command. It is guaranteed to fail if the directory
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187 # already exists. $RANDOM is bash specific and expands to empty in shells
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188 # other than bash, ksh and zsh. Its use does not increase security;
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189 # rather, it minimizes the probability of failure in a very cluttered /tmp
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190 # directory.
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191 tmp=$TMPDIR/gl$$-$RANDOM
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192 (umask 077 && mkdir "$tmp")
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193 } ||
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194 {
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195 echo "$progname: cannot create a temporary directory in $TMPDIR" >&2
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196 func_exit 1
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197 }
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198 }
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199
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200 # func_fatal_error message
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201 # outputs to stderr a fatal error message, and terminates the program.
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202 # Input:
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203 # - progname name of this program
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204 func_fatal_error ()
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205 {
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206 echo "$progname: *** $1" 1>&2
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207 echo "$progname: *** Stop." 1>&2
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208 func_exit 1
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209 }
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210
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211 # func_readlink SYMLINK
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212 # outputs the target of the given symlink.
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213 if (type -p readlink) > /dev/null 2>&1; then
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214 func_readlink ()
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215 {
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216 # Use the readlink program from GNU coreutils.
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217 readlink "$1"
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218 }
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219 else
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220 func_readlink ()
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221 {
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222 # Use two sed invocations. A single sed -n -e 's,^.* -> \(.*\)$,\1,p'
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223 # would do the wrong thing if the link target contains " -> ".
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224 LC_ALL=C ls -l "$1" | sed -e 's, -> ,#%%#,' | sed -n -e 's,^.*#%%#\(.*\)$,\1,p'
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225 }
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226 fi
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227
9186
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228 # Command-line option processing.
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229 while test $# -gt 0; do
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230 case "$1" in
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231 --help | --hel | --he | --h )
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232 func_usage
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233 exit $? ;;
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234 --version | --versio | --versi | --vers | --ver | --ve | --v )
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235 func_version
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236 exit $? ;;
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237 -* )
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238 echo "posix-modules: unknown option $1" 1>&2
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239 echo "Try 'posix-modules --help' for more information." 1>&2
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240 exit 1 ;;
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241 * )
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242 echo "posix-modules: too many arguments" 1>&2
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243 echo "Try 'posix-modules --help' for more information." 1>&2
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244 exit 1 ;;
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245 esac
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246 done
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247
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248 func_gnulib_dir
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249 (
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250 # Get the header modules.
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251 LC_ALL=C grep -h '^Gnulib module: ' "$gnulib_dir"/doc/posix-headers/*.texi 2>/dev/null \
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252 | sed -e 's,^Gnulib module: ,,'
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253 # Get the function modules.
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254 LC_ALL=C grep -h '^Gnulib module: ' "$gnulib_dir"/doc/posix-functions/*.texi 2>/dev/null \
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255 | sed -e 's,^Gnulib module: ,,'
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256 # Then filter out the words "---", ",", "and", "or" and remove *-gnu modules.
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257 ) | sed -e 's/,/ /g' | LC_ALL=C sort | LC_ALL=C uniq \
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258 | { # Then filter out the words "---", "and", "or" and remove *-gnu modules.
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259 tr ' ' '\012' | sed -e '/^---$/d' -e '/^and$/d' -e '/^or$/d' -e '/-gnu$/d'
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260 } \
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261 | LC_ALL=C sort | LC_ALL=C uniq
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Eric Blake <ebb9@byu.net>
parents: 10496
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262
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Eric Blake <ebb9@byu.net>
parents: 10496
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263 # Local Variables:
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parents: 10496
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264 # indent-tabs-mode: nil
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parents: 10496
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265 # whitespace-check-buffer-indent: nil
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Eric Blake <ebb9@byu.net>
parents: 10496
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266 # End: