new script: check-trailing-newline

simple guile script for checking for files that lack a new line
at EOF

1 files changed, 32 insertions, 0 deletions

diff --git a/resources/scripts/misc/check-trailing-newline b/resources/scripts/misc/check-trailing-newline
new file mode 100644
index 0000000..02bfd43
--- /dev/null
+++ b/resources/scripts/misc/check-trailing-newline
@@ -0,0 +1,32 @@
+#!/usr/bin/env guile
+-*- scheme -*-
+!#
+;;; check-trailing-newline -- Find files lacking a trailing newline
+;;; Copyright (C) 2015  Mark H Weaver <mhw@netris.org>
+;;;
+;;; This program is free software: you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+(use-modules (ice-9 match)
+             (rnrs io ports))
+
+(define (check-file file-name)
+  (let ((contents (call-with-input-file file-name get-string-all)))
+    (unless (string-suffix? "\n" contents)
+      (format (current-error-port)
+              "~a: lacks trailing newline\n"
+              file-name))))
+
+(match (command-line)
+  ((_ file-names ...)
+   (for-each check-file file-names)))