detect-language.ejs

#!/bin/bash

set -e

# If the language is explicitly passed in, use that.
LANGUAGE=
while getopts ":sl:" opt; do
  case "${opt}" in
    l )
      LANGUAGE="${OPTARG}"
      ;;
    \? )
      echo "Usage: detect-language [-l language]"
      exit 1
      ;;
  esac
done

case "${LANGUAGE}" in
<% for ( let lang of languages ) { -%>
<%- lang.names.map(x => `"${x}"`).join('|') %>)
  echo '<%= lang.id %>';
  exit 0
  ;;
<% } -%>
esac

# No language explicitly provided. Detect the existence of entrypoint files.
<% for ( let lang of lbypop ) { -%>
<% if ( lang.entrypoint ) { -%>
if [ -f <%= lang.entrypoint %> ]; then echo '<%= lang.id %>'; exit 0; fi
<% } -%>
<% } -%>

# No entrypoint files detected. Try to sniff out the existence of files based
# on extension.
<% for ( let lang of lbypop ) { -%>
<% if ( lang.extensions ) { -%>
<% for ( let ex of lang.extensions ) { -%>
if [ -n "$(find . -name '*.<%= ex %>')" ]; then echo '<%= lang.id %>'; exit 0; fi
<% } -%>
<% } -%>
<% } -%>