cylc

#!/bin/sh
##
## A "compiler" for CalcYouLater files.  Really just removes comments
## and blank lines.  Comments begin with the '%' character and
## continue until the end of the current line.
## 
## The benefit is that you can comment your test files.  See fact.cyl
## for an example.
## 
## Usage:  cylc file.cyl
##
## Removes comments and blank lines and stores the result in file.cylc
##
## .cyl  stands for CalcYouLater file
## .cylc stands for CalcYouLater file, compiled
##
## Author:  Mark A. Sheldon, Tufts University, Fall 2017
##
## Change log:
##     2020-02-11 [MAS] changed comment character to '%' because we
##                      use '#' for boolean values (#t and #f).
##
usage()
{
        echo "Usage:  $0 filename"
        exit 1
}


if [ $# -ne 1 ];
then
        usage
fi

cylc_extension=cylc
input_file=$1
file_without_extension=$(echo $input_file | cut -d. -f1)
output_file=$file_without_extension.$cylc_extension

# remove comments and all pre-comment spaces
# including comment characters at the end of a line
# then remove all blank lines
sed -e 's/[[:space:]]*%.*$//' -e '/^[[:space:]]*$/d' \
   < $input_file \
   > $output_file