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   1 # Common helper routines for test shell scripts
   2 # -- intended to be sourced by them
   3
   4 tmpfile="`mktemp`"
   5 trap '
   6         rm -f "$tmpfile"
   7         exit "$failed"
   8 ' 0 1 2 15
   9 failed=0
  10
  11
  12 test_skip()
  13 {
  14         echo "$0: $1"
  15         failed=120
  16         exit
  17 }
  18
  19 # portable implementation of 'which' utility
  20 findprog()
  21 {
  22         FOUND=
  23         PROG="$1"
  24         IFS_SAVE="$IFS"
  25         IFS=:
  26         for D in $PATH; do
  27                 if [ -z "$D" ]; then
  28                         D=.
  29                 fi
  30                 if [ -f "$D/$PROG" ] && [ -x "$D/$PROG" ]; then
  31                         printf '%s\n' "$D/$PROG"
  32                         break
  33                 fi
  34         done
  35         IFS="$IFS_SAVE"
  36 }
  37
  38 require_prog()
  39 {
  40         if [ -z "$(findprog $1)" ]; then
  41                 test_skip "missing $1"
  42         fi
  43 }
  44
  45 require_locale()
  46 {
  47         for locale in "$@"; do
  48                 if locale -a | grep -i "$locale" >/dev/null; then
  49                         return
  50                 fi
  51         done
  52         test_skip "no suitable locale available"
  53 }
  54
  55 # Some stuff for doing silly progress indicators
  56 progress_update()
  57 {
  58         test -t 1 || return 0   # suppress progress meter if non-interactive
  59         this="$1"
  60         first="$2"
  61         last="$3"
  62         range="$(expr $last - $first ||:)"
  63         prog="$(expr $this - $first ||:)"
  64         # this automatically rounds to nearest integer
  65         perc="$(expr 100 \* $prog / $range ||:)"
  66         # note \r so next update will overwrite
  67         printf "%3d%%\r" $perc
  68 }
  69
  70 progress_done()
  71 {
  72         test -t 1 || return 0   # suppress progress meter if non-interactive
  73         printf "100%%\n"
  74 }
  75
  76
  77
  78 #### Filter that squeezes blank lines, partially emulating GNU cat -s,
  79 #### but sufficient for our purpose.
  80 #### From http://www-rohan.sdsu.edu/doc/sed.html, compiled by Eric Pement.
  81 squeeze_lines()
  82 {
  83         sed '/^$/N;/\n$/D'
  84 }
  85
  86 #### Filter that converts non-breakable space U+00A0 to an ASCII space.
  87 prepare_space()
  88 {
  89         sed 's/'"`printf '\\302\\240'`"'/ /g'
  90 }
  91
  92
  93 # first argument:       command line to run
  94 # second argument:      "normspace" to normalize the whitespace
  95 # stdin:                expected output
  96 runandcheck()
  97 {
  98         if [ "$2" = "normspace" ]; then
  99                 eval "$1" 2>&1 | prepare_space >"$tmpfile"
 100                 diff="`prepare_space | diff -ub - "$tmpfile" || :`"
 101         else
 102                 eval "$1" >"$tmpfile" 2>&1
 103                 diff="`diff -u - "$tmpfile"`"
 104         fi
 105
 106         if [ "$diff" ]; then
 107                 echo "$0: $1 failed"
 108                 echo "$diff"
 109                 failed=`expr "${failed:-0}" + 1`
 110         fi
 111 }