cram

#!/usr/bin/env bash
if [[ ${BASH_ENV-} == "${BASH_SOURCE[0]}" ]]; then   # being run as BASH_ENV
	if [[ ${TESTDIR-} && ${TESTFILE-} ]]; then       # about to run a test
		unset BASH_ENV                               # don't run in subshells
		if [[ -f "$TESTDIR/cram-setup.sh" ]]; then   # test has a setup script?
			source "$TESTDIR/cram-setup.sh"          # load it
		fi
	fi
	return  # continue shell execution
fi

dk use: tty
[[ -f .cramrc ]] || export CRAM="${CRAM-"--indent=4 --shell=bash --verbose"}"

cram.files() { ls specs/*.cram.md; }
cram.setupfiles() { [[ ! -d specs ]] || find specs -name cram-setup.sh; }

on "test_files"  run cram_files
on "watch_files" cram.setupfiles
on "cram_files"  cram.files
on "boot"        require cram install-cram
on "test"        dk cram

paged-command cram

dk.cram() {
    local cramfiles=()
    IFS=$'\n' read -rd '' -a cramfiles < <(run cram_files) || true
    for REPLY in ${cramfiles[@]+"${cramfiles[@]}"}; do
        [[ -s "$REPLY" ]] || abort "Empty file: $REPLY" 66 # EX_NOINPUT
    done
    tty slurpify diffcolor -- env BASH_ENV="${BASH_SOURCE[0]}" \
        cram "$@" ${cramfiles[@]+"${cramfiles[@]}"}
}

install-cram() {
    require-any python
    github pjeby/cram indent-fix
    catbin cram <(
        echo '#!/usr/bin/env bash'
        echo 'PYTHONPATH=$BASHER_PACKAGES_PATH/pjeby/cram python3 -m cram "$@"'
    )
}

slurpy() {
    # Read the entire output of a pipe, and forward it on (minus NUL bytes)
    # This keeps cram and pygmentize happy and SIGPIPE-free!
    while read -rd ''; do printf "%s" "$REPLY"; done; printf "%s" "$REPLY";
}

slurpify()  { REPLY=slurpy; }