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Bash goto mcal 2 found

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Name:
Category: Bash
Body:

#!/usr/bin/env bash

# the definition needs to be at the top (obviously). The sed magic reads in the script file
# and looks for "#<label>:", from which point on it prints every line and hands it to eval.
# {:a;n;p;ba} = define label a, buffer next line, print it, go to label a (not to be confused with the goto labels)
# -n          = disable print by default
goto () {
  label=$1;
  # a label is '#foo:' on a line on its own, with optional leading/trailing whitespace
  cmd=$(sed -n "/^[[:space:]]*#$label:[[:space:]]*$/{:a;n;p;ba};" $0);
  if [[ -n $cmd ]]; then
    # a goto implementation using eval, loving it :->
    eval "$cmd";
  else
    echo "E: unknown label";
    exit 1;
  fi;
  exit;
}
# gratefully adapted from: https://bobcopeland.com/blog/2012/10/goto-in-bash/

# copy count variable because inside goto, $# is always > 0
args=$#
start=${1:-one}
goto $start

#one:
echo process one
# this part can be adapted as circumstances require, obviously
if [[ $args > 0 ]]; then goto end; fi

#two:
echo process two
if [[ $args > 0 ]]; then goto end; fi

#three:
echo process three
if [[ $args > 0 ]]; then goto end; fi

#end:
echo END

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Bash goto mcal 2 found auth	Name: Category: Bash Body: #!/usr/bin/env bash # the definition needs to be at the top (obviously). The sed magic reads in the script file # and looks for "#<label>:", from which point on it prints every line and hands it to eval. # {:a;n;p;ba} = define label a, buffer next line, print it, go to label a (not to be confused with the goto labels) # -n = disable print by default goto () { label=$1; # a label is '#foo:' on a line on its own, with optional leading/trailing whitespace cmd=$(sed -n "/^[[:space:]]#$label:[[:space:]]$/{:a;n;p;ba};" $0); if [[ -n $cmd ]]; then # a goto implementation using eval, loving it :-> eval "$cmd"; else echo "E: unknown label"; exit 1; fi; exit; } # gratefully adapted from: https://bobcopeland.com/blog/2012/10/goto-in-bash/ # copy count variable because inside goto, $# is always > 0 args=$# start=${1:-one} goto $start #one: echo process one # this part can be adapted as circumstances require, obviously if [[ $args > 0 ]]; then goto end; fi #two: echo process two if [[ $args > 0 ]]; then goto end; fi #three: echo process three if [[ $args > 0 ]]; then goto end; fi #end: echo END
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