;;; GNU Guix --- Functional package management for GNU

;;; Copyright ?? 2019 Julien Lepiller <julien@lepiller.eu>

;;;

;;; 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 (more build maven java)

  #:use-module (ice-9 peg)

  #:use-module (ice-9 textual-ports)

  #:export (parse-java-file))

(define-peg-pattern java-file body (and (* WS) (* (and top-level-statement

                                                       (* WS)))))

(define-peg-pattern WS none (or " " "\n" "\t" "\r"))

(define-peg-pattern top-level-statement body (or package import-pat class-pat comment))

(define-peg-pattern package all (and (ignore "package") (* WS) package-name

                                     (* WS) (ignore ";")))

(define-peg-pattern import-pat all (and (ignore "import") (* WS) package-name

                                     (* WS) (ignore ";")))

(define-peg-pattern comment all (and (ignore "/*")

                                     comment-part))

(define-peg-pattern comment-part body (or (ignore (and (* "*") "/"))

                                          (and (* "*") (+ comment-chr) comment-part)))

(define-peg-pattern comment-chr body (or "\t" "\n" (range #\ #\)) (range #\+ #\xffff)))

(define-peg-pattern package-name body (* (or (range #\a #\z) (range #\A #\Z)

                                             (range #\0 #\9) "_" ".")))

(define-peg-pattern class-pat all (and (? (and annotation-pat (* WS)))

                                       (? (and (ignore "public") (* WS))) (ignore "class")

                                       (* WS) package-name (* WS)

                                       (? extends)

                                       (? implements)

                                       (ignore "{") class-body (ignore "}")))

(define-peg-pattern extends all (? (and (ignore "extends") (* WS)

                                        package-name (* WS))))

(define-peg-pattern implements all (? (and (ignore "implements") (* WS)

                                           package-name (* WS))))

(define-peg-pattern annotation-pat all (and (ignore "@") package-name

                                            (? (and

                                                 (ignore "(") (* WS)

                                                 annotation-attr

                                                 (* (and (ignore ",") (* WS) annotation-attr))

                                                 (ignore ")")))))

(define-peg-pattern annotation-attr all (and attr-name (* WS) (ignore "=")

                                             (* WS) attr-value (* WS)))

(define-peg-pattern attr-name all (* (or (range #\a #\z) (range #\A #\Z) (range #\0 #\9)

                                         "_")))

(define-peg-pattern attr-value all (or "true" "false"

                                       (+ (or (range #\0 #\9) (range #\a #\z)

                                              (range #\A #\Z) "." "_"))

                                       string-pat))

(define-peg-pattern string-pat body (and (ignore "\"") (* string-chr) (ignore "\"")))

(define-peg-pattern string-chr body (or " " "!" (and (ignore "\\") "\"")

                                        (and (ignore "\\") "\\") (range #\# #\xffff)))

(define-peg-pattern class-body all (and (* WS) (* (and class-statement (* WS)))))

(define-peg-pattern class-statement body (or comment param-pat method-pat))

(define-peg-pattern param-pat all (and (? (and annotation-pat (* WS)))

                                       (? (and (ignore (or "private" "public" "protected"))

                                               (* WS)))

                                       type-name (* WS) param-name

                                       (? (and (* WS) (ignore "=") (* WS) (+ valuechr)))

                                       (ignore ";")))

(define-peg-pattern valuechr none (or string-pat comment "\n" "\t" "\r"

                                      (range #\  #\:) (range #\< #\xffff)))

(define-peg-pattern param-name all (* (or (range #\a #\z) (range #\A #\Z) (range #\0 #\9)

                                          "_")))

(define-peg-pattern type-name all (* (or (range #\a #\z) (range #\A #\Z) (range #\0 #\9)

                                         "_" "<" ">")))

(define-peg-pattern method-pat all (and (? (and annotation-pat (* WS)))

                                        (? (and (ignore (or "private" "public" "protected"))

                                                (* WS)))

                                        type-name (* WS) param-name (* WS)

                                        (ignore "(")

                                        param-list (ignore ")") (* WS)

                                        (? (and (ignore "throws") (* WS) package-name (* WS)

                                                (* (and (ignore ",") (* WS) package-name

                                                        (* WS)))))

                                        (ignore "{") (* WS) (? (and method-statements (* WS)))

                                        (ignore "}")))

(define-peg-pattern param-list all (and (* WS) (* (and type-name (* WS) param-name (* WS)

                                                       (? (ignore ",")) (* WS)))))

(define-peg-pattern method-statements none (and (or (+ method-chr)

                                                    (and "{" method-statements "}")

                                                    string-pat)

                                                (? method-statements)))

(define-peg-pattern method-chr none (or "\t" "\n" "\r" " " "!" (range #\# #\z) "|"

                                        (range #\~ #\xffff)))

(define (parse-java-file file)

  (peg:tree (match-pattern java-file (call-with-input-file file get-string-all))))

;;; GNU Guix --- Functional package management for GNU

;;; Copyright ?? 2019 Julien Lepiller <julien@lepiller.eu>

;;;

;;; 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 (more build maven plugin)

  #:use-module (more build maven java)

  #:use-module (ice-9 textual-ports)

  #:use-module (ice-9 match)

  #:use-module (srfi srfi-9)

  #:export (generate-mojo-from-files

	    default-convert-type

	    maven-convert-type))

(define-record-type mojo

  (make-mojo package name goal description requires-direct-invocation?

             requires-project? requires-reports? aggregator?

             requires-online? inherited-by-default? instantiation-strategy

             execution-strategy since thread-safe? phase parameters components)

  mojo?

  (package mojo-package)

  (name mojo-name)

  (goal mojo-goal)

  (description mojo-description)

  (requires-direct-invocation? mojo-requires-direct-invocation?)

  (requires-project? mojo-requires-project?)

  (requires-reports? mojo-requires-reports?)

  (aggregator? mojo-aggregator?)

  (requires-online? mojo-requires-online?)

  (inherited-by-default? mojo-inherited-by-default?)

  (instantiation-strategy mojo-instantiation-strategy)

  (execution-strategy mojo-execution-strategy)

  (since mojo-since)

  (thread-safe? mojo-thread-safe?)

  (phase mojo-phase)

  (parameters mojo-parameters)

  (components mojo-components))

(define* (update-mojo mojo

           #:key

           (package (mojo-package mojo))

           (name (mojo-name mojo))

           (goal (mojo-goal mojo))

           (description (mojo-description mojo))

           (requires-direct-invocation? (mojo-requires-direct-invocation? mojo))

           (requires-project? (mojo-requires-project? mojo))

           (requires-reports? (mojo-requires-reports? mojo))

           (aggregator? (mojo-aggregator? mojo))

           (requires-online? (mojo-requires-online? mojo))

           (inherited-by-default? (mojo-inherited-by-default? mojo))

           (instantiation-strategy (mojo-instantiation-strategy mojo))

           (execution-strategy (mojo-execution-strategy mojo))

           (since (mojo-since mojo))

           (thread-safe? (mojo-thread-safe? mojo))

           (phase (mojo-phase mojo))

           (parameters (mojo-parameters mojo))

           (components (mojo-components mojo)))

  (make-mojo package name goal description requires-direct-invocation?

             requires-project? requires-reports? aggregator?

             requires-online? inherited-by-default? instantiation-strategy

             execution-strategy since thread-safe? phase parameters components))

(define-record-type mojo-parameter

  (make-mojo-parameter name type since required editable description

                       configuration)

  mojo-parameter?

  (name          mojo-parameter-name)

  (type          mojo-parameter-type)

  (since         mojo-parameter-since)

  (required      mojo-parameter-required)

  (editable      mojo-parameter-editable)

  (description   mojo-parameter-description)

  (configuration mojo-parameter-configuration))

(define* (update-mojo-parameter mojo-parameter

           #:key (name (mojo-parameter-name mojo-parameter))

                 (type (mojo-parameter-type mojo-parameter))

                 (since (mojo-parameter-since mojo-parameter))

                 (required (mojo-parameter-required mojo-parameter))

                 (editable (mojo-parameter-editable mojo-parameter))

                 (description (mojo-parameter-description mojo-parameter))

                 (configuration (mojo-parameter-configuration mojo-parameter)))

  (make-mojo-parameter name type since required editable description

                       configuration))

(define-record-type mojo-component

  (make-mojo-component field role hint)

  mojo-component?

  (field mojo-component-field)

  (role  mojo-component-role)

  (hint  mojo-component-hint))

(define* (update-mojo-component mojo-component

           #:key (field (mojo-component-field mojo-component))

                 (role (mojo-component-role mojo-component))

                 (hint (mojo-component-hint mojo-component)))

  (make-mojo-component field role hint))

(define (generate-mojo-parameter mojo-parameter)

  `(parameter (name ,(mojo-parameter-name mojo-parameter))

              (type ,(mojo-parameter-type mojo-parameter))

              ,@(if (mojo-parameter-since mojo-parameter)

                    `(since (mojo-parameter-since mojo-parameter))

                    '())

              (required ,(if (mojo-parameter-required mojo-parameter) "true" "false"))

              (editable ,(if (mojo-parameter-editable mojo-parameter) "true" "false"))

              (description ,(mojo-parameter-description mojo-parameter))))

(define (generate-mojo-configuration mojo-parameter)

  (let ((config (mojo-parameter-configuration mojo-parameter)))

    (if config

        `(,(string->symbol (mojo-parameter-name mojo-parameter))

           (@ ,@config))

        #f)))

(define (generate-mojo-component mojo-component)

  `(requirement

     (role ,(mojo-component-role mojo-component))

     (role-hint ,(mojo-component-hint mojo-component))

     (field-name ,(mojo-component-field mojo-component))))

(define (generate-mojo mojo)

  `(mojo

     (goal ,(mojo-goal mojo))

     (description ,(mojo-description mojo))

     ,@(let ((val (mojo-requires-direct-invocation? mojo)))

         (if val

             `((requiresDirectInvocation ,val))

             '()))

     ,@(let ((val (mojo-requires-project? mojo)))

         (if val

             `((requiresProject ,val))

             '()))

     ,@(let ((val (mojo-requires-reports? mojo)))

         (if val

             `((requiresReports ,val))

             '()))

     ,@(let ((val (mojo-aggregator? mojo)))

         (if val

             `((aggregator ,val))

             '()))

     ,@(let ((val (mojo-requires-online? mojo)))

         (if val

             `((requiresOnline ,val))

             '()))

     ,@(let ((val (mojo-inherited-by-default? mojo)))

         (if val

             `((inheritedByDefault ,val))

             '()))

     ,@(let ((phase (mojo-phase mojo)))

             (if phase

                 `((phase ,phase))

                 '()))

     (implementation ,(string-append (mojo-package mojo) "." (mojo-name mojo)))

     (language "java")

     (instantiationStrategy ,(mojo-instantiation-strategy mojo))

     (executionStrategy ,(mojo-execution-strategy mojo))

     ,@(let ((since (mojo-since mojo)))

             (if since

                 `((since ,since))

                 '()))

     ,@(let ((val (mojo-thread-safe? mojo)))

         (if val

             `((threadSafe ,val))

             '()))

     (parameters

       ,(map generate-mojo-parameter (mojo-parameters mojo)))

     (configuration

       ,@(filter (lambda (a) a) (map generate-mojo-configuration (mojo-parameters mojo))))

     (requirements

       ,@(map generate-mojo-component (mojo-components mojo)))))

(define (default-convert-type type)

  (cond

    ((equal? type "String") "java.lang.String")

    ((equal? type "File") "java.io.File")

    ((and (> (string-length type) 6)

          (equal? (substring type 0 5) "List<"))

     "java.util.List")

    ((and (> (string-length type) 15)

          (equal? (substring type 0 14) "LinkedHashSet<"))

     "java.util.LinkedHashSet")

    (else type)))

(define (maven-convert-type type)

  (cond

    ((equal? type "MavenProject")

     "org.apache.maven.project.MavenProject")

    (else (default-convert-type type))))

(define (update-mojo-from-file mojo file convert-type)

  (define parse-tree (parse-java-file file))

  (define (update-mojo-from-attrs mojo attrs)

    (let loop ((mojo mojo) (attrs attrs))

      (match attrs

        ('() mojo)

        ((attr attrs ...)

         (match attr

           (('annotation-attr ('attr-name name) ('attr-value value))

            (cond

              ((equal? name "name")

               (loop (update-mojo mojo #:goal value) attrs))

              ((equal? name "defaultPhase")

               (loop (update-mojo mojo #:phase value) attrs))

              ((equal? name "requiresProject")

               (loop (update-mojo mojo #:requires-project? value) attrs))

              ((equal? name "threadSafe")

               (loop (update-mojo mojo #:thread-safe? value) attrs))

              (else

                (raise `(not-found-attr ,name)))))

           (_ (loop mojo attrs)))))))

  (define (update-mojo-parameter-from-attrs mojo-parameter attrs)

    (match attrs

      ('() mojo-parameter)

      (('annotation-attr ('attr-name name) ('attr-value value))

       (cond

         ((equal? name "editable")

          (update-mojo-parameter mojo-parameter #:editable value))

         ((equal? name "required")

          (update-mojo-parameter mojo-parameter #:required value))

         (else

           (update-mojo-parameter mojo-parameter

                                  #:configuration

                                  (cons

                                    (list (string->symbol name) value)

                                    (or

				      (mojo-parameter-configuration mojo-parameter)

				      '()))))))

      ((attr attrs ...)

       (match attr

         (('annotation-attr ('attr-name name) ('attr-value value))

          (cond

            ((equal? name "editable")

             (update-mojo-parameter-from-attrs

               (update-mojo-parameter mojo-parameter #:editable value)

               attrs))

            ((equal? name "required")

             (update-mojo-parameter-from-attrs

               (update-mojo-parameter mojo-parameter #:required value)

               attrs))

            (else (update-mojo-parameter-from-attrs

                    (update-mojo-parameter mojo-parameter

                                           #:configuration

                                           (cons

                                             (list (string->symbol name) value)

                                             (or

					       (mojo-parameter-configuration mojo-parameter)

					       '())))

                    attrs))))

         ((attrss ...)

          (update-mojo-parameter-from-attrs mojo-parameter (append attrss attrs)))))))

  (define (update-mojo-component-from-attrs mojo-component attrs)

    (match attrs

      ('() mojo-component)

      ((attr attrs ...)

       (match attr

         (('annotation-attr ('attr-name name) ('attr-value value))

          (cond

            ((equal? name "role")

             (update-mojo-component-from-attrs

               (update-mojo-component mojo-component #:role value)

               attrs))

            ((equal? name "hint")

             (update-mojo-component-from-attrs

               (update-mojo-component mojo-component #:hint value)

               attrs))

            (else (raise `(not-found-attr ,name)))))

         ((attrss ...)

          (update-mojo-component-from-attrs mojo-component (append attrss attrs)))))))

  (define (update-mojo-from-class-content mojo content)

    (let loop ((content content)

               (mojo mojo)

               (last-comment #f))

      (match content

        ('() mojo)

        ((('comment last-comment) content ...)

         (loop content mojo last-comment))

        ((('param-pat ('annotation-pat annot-name attrs ...) ('type-name type)

           ('param-name name)) content ...)

         (cond

           ((equal? annot-name "Parameter")

            (loop content

                  (update-mojo mojo

                               #:parameters

                               (cons (update-mojo-parameter-from-attrs

                                       (make-mojo-parameter

                                         name (convert-type type) #f #f #f last-comment #f)

                                       attrs)

                                     (mojo-parameters mojo)))

                  #f))

           ((equal? annot-name "Component")

            (loop content

                  (update-mojo mojo

                               #:components

                               (cons (update-mojo-component-from-attrs

                                       (make-mojo-component name #f #f)

                                       attrs)

                                     (mojo-components mojo)))

                  #f))

           (else (raise `(not-found-annot ,annot-name)))))

        ((('param-pat _ ...) content ...)

         (loop content mojo #f))

        ((('method-pat _ ...) content ...)

         (loop content mojo #f)))))

  (let loop ((content parse-tree)

             (mojo mojo)

             (last-comment #f))

    (if (null? content)

        mojo

        (match content

          ((tls content ...)

           (match tls

             (('package package)

              (loop content (update-mojo mojo #:package package) last-comment))

             (('comment last-comment)

              (loop content mojo last-comment))

             (('class-pat ('annotation-pat annot-name (attrs ...)) name ('extends extend)

               ('class-body class-content ...))

              (loop content

                    (update-mojo-from-class-content

                      (update-mojo-from-attrs

                        (update-mojo mojo

                                     #:name name

                                     #:description last-comment)

                        attrs)

                      class-content)

                    #f))

             (('class-pat ('annotation-pat annot-name (attrs ...)) name ('extends extend)

               ('implements implement) ('class-body class-content ...))

              (loop content

                    (update-mojo-from-class-content

                      (update-mojo-from-attrs

                        (update-mojo mojo

                                     #:name name

                                     #:description last-comment)

                        attrs)

                      class-content)

                    #f))

             (_

              (loop content mojo last-comment))))))))

(define (generate-mojo-from-files convert-type . files)

  (let ((mojo (make-mojo #f #f #f #f #f #f #f #f #f #f "per-lookup"

                         "once-per-session" #f #f #f '() '())))

    (let loop ((files files) (mojo mojo))

      (if (null? files)

          (generate-mojo mojo)

          (loop

            (cdr files)

            (update-mojo-from-file

              (update-mojo mojo

                #:package #f

                #:name #f

                #:goal #f

                #:description #f

                #:requires-direct-invocation? #f

                #:requires-project? #f

                #:requires-reports? #f

                #:aggregator? #f

                #:requires-online? #f

                #:inherited-by-default? #f

                #:instantiation-strategy "per-lookup"

                #:execution-strategy "once-per-session"

                #:since #f

                #:thread-safe? #f

                #:phase #f)

              (car files)

	      convert-type))))))

;;; GNU Guix --- Functional package management for GNU

;;; Copyright ?? 2019 Julien Lepiller <julien@lepiller.eu>

;;;

;;; 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 (more build maven pom)

  #:use-module (sxml simple)

  #:use-module (ice-9 match)

  #:export (get-pom

            pom-description

            pom-name

            pom-version

            pom-artifactid

            pom-groupid

            pom-dependencies))

(define (get-pom file)

  (let ((pom-content (call-with-input-file file xml->sxml)))

    (match pom-content

      (('*TOP* _ (_ ('@ _ ...) content ...))

        content))))

(define (pom-ref content attr)

  (assoc-ref

    content

    (string->symbol

      (string-append "http://maven.apache.org/POM/4.0.0:" attr))))

(define (pom-groupid content)

  (string-join

    (string-split

      (car (pom-ref content "groupId"))

      #\.)

    "/"))

(define (pom-artifactid content)

  (car (pom-ref content "artifactId")))

(define (pom-version content)

  (car (pom-ref content "version")))

(define (pom-name content)

  (car (pom-ref content "name")))

(define (pom-description content)

  (car (pom-ref content "description")))

(define (pom-dependencies content)

  (filter

    (lambda (a) a)

    (map

      (match-lambda

        ((? string? _) #f)

        (('http://maven.apache.org/POM/4.0.0:dependency content ...)

         (let loop ((content content) (groupid #f) (artifactid #f) (version #f) (scope #f))

           (match content

             ('() 

              `(dependency

                 (groupId ,groupid)

                 (artifactId ,artifactid)

                 (version ,version)

                 ,@(if scope `((scope ,scope)) '())))

             (((? string? _) content ...)

              (loop content groupid artifactid version scope))

             ((('http://maven.apache.org/POM/4.0.0:scope scope) content ...)

              (loop content groupid artifactid version scope))

             ((('http://maven.apache.org/POM/4.0.0:groupId groupid) content ...)

              (loop content groupid artifactid version scope))

             ((('http://maven.apache.org/POM/4.0.0:artifactId artifactid) content ...)

              (loop content groupid artifactid version scope))

             ((('http://maven.apache.org/POM/4.0.0:version version) content ...)

              (loop content groupid artifactid version scope))))))

      (pom-ref content "dependencies"))))

       #:imported-modules

       ((more build maven pom)

        (more build maven java)

        (more build maven plugin)

        ,@%ant-build-system-modules)

       #:modules

       ((more build maven pom)

        (more build maven java)

        (more build maven plugin)

        (sxml simple)

        (guix build ant-build-system)

        (guix build java-utils)

        (guix build utils))

             (copy-file "pom.xml" "build/classes/META-INF/pom.xml")

             #t))

         (add-before 'build 'generate-plugin.xml

           (lambda _

             (let* ((pom-content (get-pom "pom.xml"))

                    (name (pom-name pom-content))

                    (description (pom-description pom-content))

                    (dependencies (pom-dependencies pom-content))

                    (mojos

                     (with-directory-excursion "src/main/java/org/apache/maven/plugins/resources/"

                       `(mojos

                          ,(generate-mojo-from-files maven-convert-type

                                                     "ResourcesMojo.java"

                                                     "CopyResourcesMojo.java")

                          ,(generate-mojo-from-files maven-convert-type

                                                     "ResourcesMojo.java")

                          ,(generate-mojo-from-files maven-convert-type

                                                     "ResourcesMojo.java"

                                                     "TestResourcesMojo.java")))))

               (mkdir-p "build/classes/META-INF/maven")

               (with-output-to-file "build/classes/META-INF/maven/plugin.xml"

                 (lambda _

                   (sxml->xml

                     `(plugin

                        (name ,name)

                        (description ,description)

                        (groupId "org.apache.maven.plugins")

                        (artifactId "maven-resources-plugin")

                        (version ,,version)

                        (goalPrefix "resources")

                        (isolatedRealm "false")

                        (inheritedByDefault "true")

                        ,mojos

                        (dependencies

                         ,@dependencies))))))))