bash_n_examples/bash/functions/__asd.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
   5 S="asd \$(if \$(s\$(g)), \$(z))sd \$(asds \$(asd))"
   6 ##!spaces! without separating static strings
   7 #
   8 #S="asd\$(if \$(s\$(g)), \$(z))sd \$(asds \$(asd))"
   9
  10 echo "$S"
  11
  12
  13 echovars()
  14 {
  15 parm="$@"
  16 echo -n "$parm" | sed -e 's/\$(/+/g' -e 's/)/-/g' | \
  17 while read -r -N 1 A; do
  18 [ -z "$PP" ] && PP=0
  19 [ -z "$MM" ] && MM=0
  20 [ "$PP" = "$MM" ] && oeq=1 || oeq=
  21 [ "$A" = "+" ] && PP=$(expr $PP + 1)
  22 [ "$A" = "-" ] && MM=$(expr $MM + 1)
  23 [ "$PP" = "$MM" ] && eq=1 || eq=
  24 [ -z "$oeq" -a -n "$eq" ] && echo -n "- "
  25 if [ "$PP" != "$MM" ]; then
  26     echo -n "$A"
  27 fi
  28 done | \
  29 sed -e 's/+/$(/g' -e 's/-/)/g'
  30 echo
  31 }
  32
  33
  34
  35 echovars_linefeed()
  36 {
  37 parm="$@"
  38 echo -n "$parm" | sed -e 's/\$(/+/g' -e 's/)/-/g' | \
  39 while read -r -N 1 A; do
  40 [ -z "$PP" ] && PP=0
  41 [ -z "$MM" ] && MM=0
  42 [ "$PP" = "$MM" ] && oeq=1 || oeq=
  43 [ "$A" = "+" ] && PP=$(expr $PP + 1)
  44 [ "$A" = "-" ] && MM=$(expr $MM + 1)
  45 [ "$PP" = "$MM" ] && eq=1 || eq=
  46 [ -z "$oeq" -a -n "$eq" ] && echo "-"
  47 if [ "$PP" != "$MM" ]; then
  48     echo -n "$A"
  49 fi
  50 done | \
  51 sed -e 's/+/$(/g' -e 's/-/)/g'
  52 }
  53
  54
  55 echostatic()
  56 {
  57 (echo -n "$S"; echo -n ")") | sed -e 's/\$(/+/g' -e 's/)/-/g' | \
  58 while read -r -N 1 A; do
  59 [ -z "$PP" ] && PP=0
  60 [ -z "$MM" ] && MM=0
  61 [ "$PP" = "$MM" ] && oeq=1 || oeq=
  62 [ "$A" = "+" ] && PP=$(expr $PP + 1)
  63 [ "$A" = "-" ] && MM=$(expr $MM + 1)
  64 [ "$PP" = "$MM" ] && eq=1 || eq=
  65 [ \( -z "$oeq" -a -n "$eq" \) -a -n "$val" ] && echo -n " " && val=
  66 [ \( "$MM" -gt "$PP" \) -a -n "$val" ] && echo -n " " && val=
  67 if [ "$PP" = "$MM" ]; then
  68     [ "$A" != "-" ] && echo -n "$A" && val=1
  69 fi
  70 done
  71 echo
  72 }
  73
  74 echo "**"
  75 echovars "$S"
  76 echo "**"
  77 echovars_linefeed "$S"
  78 echo "**"
  79 echostatic "$S"
  80 echo "**"
  81 for i in `echostatic "$S"`; do
  82     echo "$i"
  83 done
  84 echo "**"