Add new USES: shebangfix

use it to fix shebang on files specified by SHEBANG_FILES macro, by default it
proposes default values for bash, perl, php, python, ruby, it can be customized
and extended

1 files changed, 53 insertions, 0 deletions

diff --git a/Mk/Uses/shebangfix.mk b/Mk/Uses/shebangfix.mk
new file mode 100644
index 000000000000..1cc36d250dde
--- /dev/null
+++ b/Mk/Uses/shebangfix.mk
@@ -0,0 +1,53 @@
+# $FreeBSD$
+#
+# common templates for replacing #! interpreters in scripts file
+#
+# MAINTAINER: portmgr@FreeBSD.org
+#
+# Feature:	shebangfix
+# Usage:	USES=shebangfix
+#
+# To define new shebang scheme, in the port Makefile add:
+#
+# SHEBANG_LANG=	lua
+# lua_OLD_CMD=	/usr/bin/lua
+# lua_CMD=	${LOCALBASE}/bin/lua
+#
+# To override a definition for example replacing /usr/bin/perl by /usr/bin/env perl
+# add to the port Makefile:
+# perl_CMD=	${SENTENV} perl
+#
+
+.if !defined(_INCLUDE_USES_SHEBANGFIX_Mk)
+_INCLUDE_USES_SHEBANGFIX_MK=	yes
+
+bash_OLD_CMD?=	/bin/bash
+bash_CMD?=	${LOCALBASE}/bin/bash
+perl_OLD_CMD?=	/usr/bin/perl
+perl_CMD?=	${LOCALBASE}/bin/perl
+python_OLD_CMD?=	/usr/bin/python
+python_CMD?=	${LOCALBASE}/bin/python
+ruby_OLD_CMD?=	/usr/bin/ruby
+ruby_CMD?=	${LOCALBASE}/bin/ruby
+php_OLD_CMD?=	/usr/bin/php
+php_CMD?=	${LOCALBASE}/bin/php
+
+SHEBANG_LANG+=	bash perl python ruby php
+
+.for lang in ${SHEBANG_LANG}
+.if !defined(${lang}_CMD)
+IGNORE+=	missing definition for ${lang}_CMD
+.endif
+.if !defined(${lang}_OLD_CMD)
+IGNORE+=	missing definition for ${lang}_OLD_CMD
+.endif
+_SHEBANG_REINPLACE_ARGS+=	-e "1s|^\#![[:space:]]*${${lang}_OLD_CMD}|\#!${${lang}_CMD}|"
+.endfor
+
+pre-patch: fix-shebang
+
+fix-shebang:
+	@cd ${WRKSRC}; \
+		${ECHO_CMD} ${SHEBANG_FILES} | ${XARGS} ${REINPLACE_CMD} ${_SHEBANG_REINPLACE_ARGS}
+
+.endif