add ted ("test edit") script

.config/shell/bin/ted

@@ -0,0 +1,88 @@
+#!/bin/bash
+# "test edit" - makes a temporary file and edits it
+# requires: bash (uses arrays)
+
+set -eu
+
+pname="${0##*/}"
+
+ed() {
+   ${EDITOR:-nvim} "$@"
+}
+
+usage() {
+   echo '"Test edit" - edit a temporary file for testing code fragments'
+   echo ""
+   echo "Usage: $pname [OPTIONS] [file] [ed-opts] [--] [cmd]..."
+   echo ""
+   echo "Arguments:"
+   echo "  file     A file to edit. Also acts as the name for the directory."
+   echo "  ed-opts  Any option to pass to the editor. (eg. another file name)"
+   echo "  cmd...   A list of commands to EVALuate after the editor exits. (example: bash)"
+   echo '             Exposed variables:'
+   echo '               $filename - the name of the file specified for `file`'
+   echo '               $tempdir - the directory the editor was launched in.'
+   echo '               $ed_args - array of arguments passed to the editor.'
+   echo '               $cmd_args - the array of commands specified in the `cmd...` option'
+   echo ""
+   echo "Options:"
+   echo "  -h, --help  Print usage information and exit. This only gets read in the first argument position."
+   echo ""
+   echo "Environment:"
+   echo "  EDITOR  The editor you want to use."
+   echo ""
+   echo "Examples:"
+   echo "  Edit hello.sh and then run bash (so you can run it)"
+   echo "    $pname hello.sh -- bash"
+   echo "  Edit hello.sh and then run it"
+   echo "    $pname hello.sh -- ./hello.sh"
+   echo "  Edit hello.sh and then run it (using a variable)"
+   echo "    $pname hello.sh -- ./\$filename"
+   echo "  Edit hello-world.c and hello-lib.c, then compile with gcc and run bash"
+   echo "    $pname hello-world.c hello-lib.c -- 'gcc -o hello \"\${ed_args[@]}\"' './hello' bash"
+}
+
+if [[ $# = 0 ]]; then usage; exit 1; fi
+
+case "${1:-}" in
+   -h|--help) usage; exit;;
+esac
+
+filename="$1"; shift
+dirname="${filename%%.*}"
+tests_dir="${XDG_DOCUMENTS_DIR:-"$HOME"/Documents}/code-tests"
+date="$(date +%F)"
+
+tempdir="$tests_dir/$date-$dirname"
+mkdir -p "$tempdir"
+
+# build an argument list for the editor
+ed_args=("$filename")
+cmds=("$SHELL")
+for a;do
+   shift
+   # stop reading after --
+   if [ "$a" = -- ]; then
+      cmds=("$@")
+      break
+   fi
+   ed_args+=("$a")
+done
+
+cd "$tempdir"
+
+# launch editor
+ed "${ed_args[@]}"
+
+# launch the command
+if [ "${#cmds}" != 0 ]; then
+   for cmd in "${cmds[@]}"; do
+      (eval "$cmd")
+   done
+fi
+
+# check if directory is empty. If it is, remove it.
+filecount="$(find . -maxdepth 1 -print | wc -l)"
+if [ "$filecount" = 0 ]; then
+   rmdir "$tempdir"
+fi