tests/read.tests

   1 #   This program is free software: you can redistribute it and/or modify
   2 #   it under the terms of the GNU General Public License as published by
   3 #   the Free Software Foundation, either version 3 of the License, or
   4 #   (at your option) any later version.
   5 #
   6 #   This program is distributed in the hope that it will be useful,
   7 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9 #   GNU General Public License for more details.
  10 #
  11 #   You should have received a copy of the GNU General Public License
  12 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  13 #
  14 echo " a " | (read x; echo "$x.")
  15
  16 echo " a  b  " | ( read x y ; echo -"$x"-"$y"- )
  17 echo " a  b\ " | ( read x y ; echo -"$x"-"$y"- )
  18 echo " a  b  " | ( read x ; echo -"$x"- )
  19 echo " a  b\ " | ( read x ; echo -"$x"- )
  20
  21 echo " a  b\ " | ( read -r x y ; echo -"$x"-"$y"- )
  22 echo " a  b\ " | ( read -r x ; echo -"$x"- )
  23
  24 echo "\ a  b\ " | ( read -r x y ; echo -"$x"-"$y"- )
  25 echo "\ a  b\ " | ( read -r x ; echo -"$x"- )
  26 echo " \ a  b\ " | ( read -r x y ; echo -"$x"-"$y"- )
  27 echo " \ a  b\ " | ( read -r x ; echo -"$x"- )
  28
  29 # make sure that CTLESC and CTLNUL are passed through correctly
  30 echo $'\001' | ( read var ; recho "$var" )
  31 echo $'\001' | ( read ; recho "$REPLY" )
  32
  33 echo $'\177' | ( read var ; recho "$var" )
  34 echo $'\177' | ( read ; recho "$REPLY" )
  35
  36 # make sure a backslash-quoted \\n still disappears from the input when
  37 # we're not reading in `raw' mode, and no stray CTLESC chars are left in
  38 # the input stream
  39 echo $'ab\\\ncd' | ( read ; recho "$REPLY" )
  40
  41 echo "A B " > $TMPDIR/IN
  42 unset x y z
  43 read x y z < $TMPDIR/IN
  44 echo 1: "x[$x] y[$y] z[$z]"
  45 echo 1a: ${z-z not set}
  46 read x < $TMPDIR/IN
  47 echo 2: "x[$x]"
  48 rm $TMPDIR/IN
  49
  50 # this is where the bash `read' behavior with respect to $REPLY differs
  51 # from ksh93
  52 echo "A B " > $TMPDIR/IN
  53
  54 read < $TMPDIR/IN
  55 echo "[$REPLY]"
  56
  57 rm $TMPDIR/IN
  58
  59 echo " A B " > $TMPDIR/IN
  60
  61 read < $TMPDIR/IN
  62 echo "[$REPLY]"
  63
  64 rm $TMPDIR/IN
  65
  66 # make sure that read with more variables than words sets the extra
  67 # variables to the empty string
  68
  69 bvar=bvar
  70 cvar=cvar
  71 echo aa > $TMPDIR/IN
  72 read avar bvar cvar < $TMPDIR/IN
  73 echo =="$avar"==
  74 echo =="$bvar"==
  75 echo =="$cvar"==
  76
  77 rm $TMPDIR/IN
  78
  79 # test behavior of read with various settings of IFS
  80
  81 echo " foo" | { IFS= read line; recho "$line"; }
  82
  83 echo " foo" | { IFS= ; read line; recho "$line"; }
  84
  85 echo " foo" | { unset IFS ; read line; recho "$line"; }
  86
  87 echo " foo" | { IFS=$'\n' ; read line; recho "$line"; }
  88
  89 echo " foo" | { IFS=$' \n' ; read line; recho "$line"; }
  90
  91 echo " foo" | { IFS=$' \t\n' ; read line; recho "$line"; }
  92
  93 echo " foo" | { IFS=$':' ; read line; recho "$line"; }
  94
  95 # test read -d delim behavior
  96 ${THIS_SH} ./read1.sub
  97
  98 # test read -t timeout behavior
  99 ${THIS_SH} ./read2.sub
 100
 101 # test read -n nchars behavior
 102 ${THIS_SH} ./read3.sub
 103
 104 # test read -u fd behavior
 105 ${THIS_SH} ./read4.sub
 106
 107 # test behavior when IFS is not the default -- bug through bash-2.05b
 108 ${THIS_SH} ./read5.sub
 109
 110 # test behavior of read -t 0
 111 ${THIS_SH} ./read6.sub
 112
 113 # test behavior of readline timeouts
 114 ${THIS_SH} ./read7.sub
 115
 116 # test behavior of read -n and read -d on regular files
 117 ${THIS_SH} ./read8.sub