bash_n_examples/bash/functions/__ASd2.sh

   1 #S="\$(asda\$(s\$(g)), \$(z))sd \$(asds \$(asd))dsa"
   2 #S="\$(asda\$(s\$(g)), \$(z))sd \$(asds \$(asd))"
   3 #S="asd \$(asda\$(s\$(g)), \$(z))sd \$(asds \$(asd))dsa"
   4 S="asd \$(asda\$(s\$(g)), \$(z))sd \$(asds \$(asd))"
   5
   6 echo "$S"
   7
   8 ##linefeed separating sections
   9 echo "***"
  10 (echo -n "$S"; echo -n ")") | sed -e 's/\$(/+/g' -e 's/)/-/g' | \
  11 while read -r -N 1 A; do
  12 [ -z "$PP" ] && PP=0
  13 [ -z "$MM" ] && MM=0
  14 [ "$PP" = "$MM" ] && oeq=1 || oeq=
  15 [ "$A" = "+" ] && PP=$(expr $PP + 1)
  16 [ "$A" = "-" ] && MM=$(expr $MM + 1)
  17 [ "$PP" = "$MM" ] && eq=1 || eq=
  18 if [ -n "$oeq" -a -n "$eq" -a "$PP" = "$MM" ]; then
  19     echo -n "$A"
  20     val=1
  21 fi
  22 if [ -n "$oeq" -a -z "$eq" -a "$PP" != "$MM" ]; then
  23     [ -n "$val" ] && echo && val=
  24 fi
  25 done
  26
  27 ##linefeed separating sections
  28 echo "***"
  29 echo -n "$S" | sed -e 's/\$(/+/g' -e 's/)/-/g' | \
  30 while read -r -N 1 A; do
  31 [ -z "$PP" ] && PP=0
  32 [ -z "$MM" ] && MM=0
  33 [ "$PP" = "$MM" ] && oeq=1 || oeq=
  34 [ "$A" = "+" ] && PP=$(expr $PP + 1)
  35 [ "$A" = "-" ] && MM=$(expr $MM + 1)
  36 [ "$PP" = "$MM" ] && eq=1 || eq=
  37 if [ \( -z "$oeq" -a -n "$eq" -a "$PP" = "$MM" \) -o \( "$PP" != "$MM" \) ]; then
  38     echo -n "$A"
  39     [ "$PP" = "$MM" ] && echo
  40 fi
  41 done | \
  42 sed -e 's/+/$(/g' -e 's/-/)/g'