Mercurial > gnulib
annotate posix-modules @ 17335:840c32a600aa
getcwd: support coreutils better
Like strtod, getcwd incorrectly referred to HAVE_RAW_DECL_GETCWD,
but this might not be correct in coreutils, which disables
the raw decl checks. Problem reported by Nagendra in
<http://bugs.gnu.org/10305#192>.
* lib/getcwd.c (__getcwd): Do not depend on HAVE_RAW_DECL_GETCWD.
* m4/getcwd-path-max.m4 (gl_FUNC_GETCWD_PATH_MAX):
Test the getcwd function, not any macro, since getcwd.c wants the
function.
* m4/getcwd.m4 (gl_FUNC_GETCWD):
Don't define HAVE_MINIMALLY_WORKING_GETCWD if the code doesn't
compile, as might happen if there's a macro but no function.
author | Paul Eggert <eggert@cs.ucla.edu> |
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date | Wed, 20 Feb 2013 00:04:35 -0800 |
parents | e542fd46ad6f |
children | 1d9362a18c34 |
rev | line source |
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1 #!/bin/sh |
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2 # |
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3 # Copyright (C) 2002-2008, 2010-2013 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=$0 |
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20 package=gnulib |
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21 |
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22 # func_usage |
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23 # outputs to stdout the --help usage message. |
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24 func_usage () |
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25 { |
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26 echo "\ |
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27 Usage: posix-modules |
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28 |
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29 Lists the gnulib modules that implement POSIX interfaces. |
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30 |
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31 Report bugs to <bug-gnulib@gnu.org>." |
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32 } |
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33 |
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34 # func_version |
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35 # outputs to stdout the --version message. |
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36 func_version () |
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37 { |
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38 func_gnulib_dir |
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39 if test -d "$gnulib_dir"/.git \ |
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40 && (git --version) >/dev/null 2>/dev/null \ |
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41 && (date --version) >/dev/null 2>/dev/null; then |
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42 # gnulib checked out from git. |
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43 sed_extract_first_date='/^Date/{ |
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44 s/^Date:[ ]*//p |
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45 q |
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46 }' |
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47 date=`cd "$gnulib_dir" && git log ChangeLog | sed -n -e "$sed_extract_first_date"` |
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48 # Turn "Fri Mar 21 07:16:51 2008 -0600" into "Mar 21 2008 07:16:51 -0600". |
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49 sed_year_before_time='s/^[^ ]* \([^ ]*\) \([0-9]*\) \([0-9:]*\) \([0-9]*\) /\1 \2 \4 \3 /' |
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50 date=`echo "$date" | sed -e "$sed_year_before_time"` |
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51 # Use GNU date to compute the time in GMT. |
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52 date=`date -d "$date" -u +"%Y-%m-%d %H:%M:%S"` |
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53 version=' '`cd "$gnulib_dir" && ./build-aux/git-version-gen /dev/null | sed -e 's/-dirty/-modified/'` |
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54 else |
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55 if test -d "$gnulib_dir"/CVS \ |
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56 && (cvs --version) >/dev/null 2>/dev/null; then |
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57 # gnulib checked out from CVS. |
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58 sed_extract_first_date='/^date: /{ |
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59 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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60 q |
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61 }' |
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62 date=`cd "$gnulib_dir" && cvs log -N ChangeLog 2>/dev/null | sed -n -e "$sed_extract_first_date"` |
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63 else |
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64 # gnulib copy without versioning information. |
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65 date=`sed -e 's/ .*//;q' "$gnulib_dir"/ChangeLog` |
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66 fi |
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67 version= |
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68 fi |
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69 year=`"$gnulib_dir"/build-aux/mdate-sh "$self_abspathname" | sed 's,^.* ,,'` |
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70 echo "\ |
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71 posix-modules (GNU $package $date)$version |
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72 Copyright (C) $year Free Software Foundation, Inc. |
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73 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> |
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74 This is free software: you are free to change and redistribute it. |
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75 There is NO WARRANTY, to the extent permitted by law. |
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76 |
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77 Written by" "Bruno Haible" |
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78 } |
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79 |
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80 # func_exit STATUS |
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81 # exits with a given status. |
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82 # This function needs to be used, rather than 'exit', when a 'trap' handler is |
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83 # in effect that refers to $?. |
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84 func_exit () |
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85 { |
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86 (exit $1); exit $1 |
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87 } |
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88 |
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89 # func_gnulib_dir |
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90 # locates the directory where the gnulib repository lives |
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91 # Input: |
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92 # - progname name of this program |
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93 # Sets variables |
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94 # - self_abspathname absolute pathname of this program |
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95 # - gnulib_dir absolute pathname of gnulib repository |
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96 func_gnulib_dir () |
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97 { |
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98 case "$progname" in |
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99 /*) self_abspathname="$progname" ;; |
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100 */*) self_abspathname=`pwd`/"$progname" ;; |
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101 *) |
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102 # Look in $PATH. |
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103 # Iterate through the elements of $PATH. |
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104 # We use IFS=: instead of |
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105 # for d in `echo ":$PATH:" | sed -e 's/:::*/:.:/g' | sed -e 's/:/ /g'` |
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106 # because the latter does not work when some PATH element contains spaces. |
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107 # We use a canonicalized $pathx instead of $PATH, because empty PATH |
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108 # elements are by definition equivalent to '.', however field splitting |
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109 # according to IFS=: loses empty fields in many shells: |
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110 # - /bin/sh on OSF/1 and Solaris loses all empty fields (at the |
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111 # beginning, at the end, and in the middle), |
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112 # - /bin/sh on IRIX and /bin/ksh on IRIX and OSF/1 lose empty fields |
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113 # at the beginning and at the end, |
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114 # - GNU bash, /bin/sh on AIX and HP-UX, and /bin/ksh on AIX, HP-UX, |
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115 # Solaris lose empty fields at the end. |
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116 # The 'case' statement is an optimization, to avoid evaluating the |
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117 # explicit canonicalization command when $PATH contains no empty fields. |
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118 self_abspathname= |
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119 if test "${PATH_SEPARATOR+set}" != set; then |
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120 # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which |
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121 # contains only /bin. Note that ksh looks also at the FPATH variable, |
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122 # so we have to set that as well for the test. |
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123 PATH_SEPARATOR=: |
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124 (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ |
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125 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \ |
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126 || PATH_SEPARATOR=';' |
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127 } |
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128 fi |
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129 if test "$PATH_SEPARATOR" = ";"; then |
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130 # On Windows, programs are searched in "." before $PATH. |
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131 pathx=".;$PATH" |
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132 else |
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133 # On Unix, we have to convert empty PATH elements to ".". |
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134 pathx="$PATH" |
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135 case :$PATH: in |
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136 *::*) |
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137 pathx=`echo ":$PATH:" | sed -e 's/:::*/:.:/g' -e 's/^://' -e 's/:\$//'` |
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138 ;; |
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139 esac |
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140 fi |
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141 save_IFS="$IFS" |
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142 IFS="$PATH_SEPARATOR" |
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143 for d in $pathx; do |
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144 IFS="$save_IFS" |
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145 test -z "$d" && d=. |
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146 if test -x "$d/$progname" && test ! -d "$d/$progname"; then |
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147 self_abspathname="$d/$progname" |
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148 break |
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149 fi |
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150 done |
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151 IFS="$save_IFS" |
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152 if test -z "$self_abspathname"; then |
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153 func_fatal_error "could not locate the posix-modules program - how did you invoke it?" |
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154 fi |
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155 ;; |
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156 esac |
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157 while test -h "$self_abspathname"; do |
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158 # Resolve symbolic link. |
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159 linkval=`func_readlink "$self_abspathname"` |
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160 test -n "$linkval" || break |
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161 case "$linkval" in |
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162 /* ) self_abspathname="$linkval" ;; |
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163 * ) self_abspathname=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'`/"$linkval" ;; |
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164 esac |
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165 done |
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166 gnulib_dir=`echo "$self_abspathname" | sed -e 's,/[^/]*$,,'` |
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167 } |
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168 |
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169 # func_tmpdir |
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170 # creates a temporary directory. |
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171 # Input: |
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172 # - progname name of this program |
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173 # Sets variable |
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174 # - tmp pathname of freshly created temporary directory |
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175 func_tmpdir () |
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176 { |
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177 # Use the environment variable TMPDIR, falling back to /tmp. This allows |
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178 # users to specify a different temporary directory, for example, if their |
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179 # /tmp is filled up or too small. |
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180 : ${TMPDIR=/tmp} |
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181 { |
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182 # Use the mktemp program if available. If not available, hide the error |
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183 # message. |
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184 tmp=`(umask 077 && mktemp -d "$TMPDIR/glXXXXXX") 2>/dev/null` && |
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185 test -n "$tmp" && test -d "$tmp" |
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186 } || |
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187 { |
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188 # Use a simple mkdir command. It is guaranteed to fail if the directory |
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189 # already exists. $RANDOM is bash specific and expands to empty in shells |
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190 # other than bash, ksh and zsh. Its use does not increase security; |
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191 # rather, it minimizes the probability of failure in a very cluttered /tmp |
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192 # directory. |
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193 tmp=$TMPDIR/gl$$-$RANDOM |
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194 (umask 077 && mkdir "$tmp") |
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195 } || |
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196 { |
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197 echo "$progname: cannot create a temporary directory in $TMPDIR" >&2 |
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198 func_exit 1 |
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199 } |
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200 } |
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201 |
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202 # func_fatal_error message |
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203 # outputs to stderr a fatal error message, and terminates the program. |
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204 # Input: |
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205 # - progname name of this program |
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206 func_fatal_error () |
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207 { |
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208 echo "$progname: *** $1" 1>&2 |
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209 echo "$progname: *** Stop." 1>&2 |
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210 func_exit 1 |
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211 } |
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212 |
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213 # func_readlink SYMLINK |
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214 # outputs the target of the given symlink. |
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215 if (type -p readlink) > /dev/null 2>&1; then |
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216 func_readlink () |
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217 { |
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218 # Use the readlink program from GNU coreutils. |
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219 readlink "$1" |
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220 } |
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221 else |
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222 func_readlink () |
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223 { |
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224 # Use two sed invocations. A single sed -n -e 's,^.* -> \(.*\)$,\1,p' |
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225 # would do the wrong thing if the link target contains " -> ". |
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226 LC_ALL=C ls -l "$1" | sed -e 's, -> ,#%%#,' | sed -n -e 's,^.*#%%#\(.*\)$,\1,p' |
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227 } |
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228 fi |
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229 |
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230 # Command-line option processing. |
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231 while test $# -gt 0; do |
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232 case "$1" in |
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233 --help | --hel | --he | --h ) |
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234 func_usage |
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235 exit $? ;; |
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236 --version | --versio | --versi | --vers | --ver | --ve | --v ) |
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237 func_version |
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238 exit $? ;; |
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239 -* ) |
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240 echo "posix-modules: unknown option $1" 1>&2 |
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241 echo "Try 'posix-modules --help' for more information." 1>&2 |
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242 exit 1 ;; |
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243 * ) |
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244 echo "posix-modules: too many arguments" 1>&2 |
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245 echo "Try 'posix-modules --help' for more information." 1>&2 |
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246 exit 1 ;; |
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247 esac |
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248 done |
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249 |
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250 func_gnulib_dir |
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251 ( |
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252 # Get the header modules. |
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253 LC_ALL=C grep -h '^Gnulib module: ' "$gnulib_dir"/doc/posix-headers/*.texi 2>/dev/null \ |
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254 | sed -e 's,^Gnulib module: ,,' |
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255 # Get the function modules. |
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256 LC_ALL=C grep -h '^Gnulib module: ' "$gnulib_dir"/doc/posix-functions/*.texi 2>/dev/null \ |
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257 | sed -e 's,^Gnulib module: ,,' |
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258 # Then filter out the words "---", ",", "and", "or" and remove *-gnu modules. |
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259 ) | sed -e 's/,/ /g' | LC_ALL=C sort | LC_ALL=C uniq \ |
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260 | { # Then filter out the words "---", "and", "or" and remove *-gnu modules. |
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261 tr ' ' '\012' | sed -e '/^---$/d' -e '/^and$/d' -e '/^or$/d' -e '/-gnu$/d' |
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262 } \ |
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263 | LC_ALL=C sort | LC_ALL=C uniq |
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264 |
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265 # Local Variables: |
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266 # indent-tabs-mode: nil |
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267 # whitespace-check-buffer-indent: nil |
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268 # End: |