[bug#36605] [PATCH 03/12] guix: Add java-utils.

[Hartmut Goebel <h.goebel@crazy-compilers.com>]

* guix/build/java-utils.scm: New file.
* guix/build-system/ant.scm: Use it.
* Makefile.am (MODULES): Add it.
---
 Makefile.am               |  1 +
 guix/build-system/ant.scm |  2 ++
 guix/build/java-utils.scm | 52 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 55 insertions(+)
 create mode 100644 guix/build/java-utils.scm

diff --git a/Makefile.am b/Makefile.am
index 1a34e0d..c711e48 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -86,6 +86,7 @@ MODULES =					\
   guix/build/emacs-build-system.scm		\
   guix/build/git.scm				\
   guix/build/hg.scm				\
+  guix/build/java-utils.scm			\
   guix/build/glib-or-gtk-build-system.scm	\
   guix/build/gnu-build-system.scm		\
   guix/build/gnu-dist.scm			\
diff --git a/guix/build-system/ant.scm b/guix/build-system/ant.scm
index cd544ad..b98a651 100644
--- a/guix/build-system/ant.scm
+++ b/guix/build-system/ant.scm
@@ -39,6 +39,7 @@
 (define %ant-build-system-modules
   ;; Build-side modules imported by default.
   `((guix build ant-build-system)
+    (guix build java-utils)
     (guix build syscalls)
     ,@%gnu-build-system-modules))
 
@@ -107,6 +108,7 @@
                     (guile #f)
                     (imported-modules %ant-build-system-modules)
                     (modules '((guix build ant-build-system)
+                               (guix build java-utils)
                                (guix build utils))))
   "Build SOURCE with INPUTS."
   (define builder
diff --git a/guix/build/java-utils.scm b/guix/build/java-utils.scm
new file mode 100644
index 0000000..1ca5b3d
--- /dev/null
+++ b/guix/build/java-utils.scm
@@ -0,0 +1,52 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2016 Hartmut Goebel <h.goebel@crazy-compilers.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix 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.
+;;;
+;;; GNU Guix 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 GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (guix build java-utils)
+  #:use-module (guix build utils)
+  #:export (ant-build-javadoc
+            install-jars
+            install-javadoc))
+
+(define (package-name-version store-dir)
+  ; copied from haskell-build-system.scm - seeking for a more general solution
+  "Given a store directory STORE-DIR return 'name-version' of the package."
+  (let* ((base (basename store-dir)))
+    (string-drop base
+                 (+ 1 (string-index base #\-)))))
+
+(define* (ant-build-javadoc #:key (target "javadoc") (make-flags '())
+                            #:allow-other-keys)
+  (zero? (apply system* `("ant" ,target ,@make-flags))))
+
+(define* (install-jars jars-dir)
+  "Helper for the case the build.xml does not include an install target."
+  (lambda* (#:key outputs #:allow-other-keys)
+    (let ((share (string-append (assoc-ref outputs "out")
+                                "/share/java")))
+      (for-each (lambda (f) (install-file f share))
+                (find-files jars-dir "\\.jar$")))))
+
+(define* (install-javadoc apidocs-dir)
+  "Helper to install the javadocs."
+  (lambda* (#:key outputs #:allow-other-keys)
+    (let* ((out (assoc-ref outputs "out"))
+           (docs (string-append (assoc-ref outputs "doc")
+                                "/share/doc/" (package-name-version out) "/")))
+      (mkdir-p docs)
+      (copy-recursively apidocs-dir docs))))
-- 
2.7.4