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;;; haskell-package.el --- Interface for working with Cabal packages
;; Copyright (C) 2011 Chris Done
;; Author: Chris Done <chrisdone@gmail.com>
;; This file is not part of GNU Emacs.
;; This file 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, or (at your option)
;; any later version.
;; This file 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 Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Todo:
;;; Code:
(require 'cl-lib)
;; Dynamically scoped variables.
;; TODO What actually sets this?
(defvar haskell-config-use-cabal-dev)
;; (defun haskell-package-conf-path-get (&optional project)
;; "Gets the user conf or the cabal-dev conf. Get the global conf elsewhere."
;; (if haskell-config-use-cabal-dev
;; (if project
;; (let* ((cabal-path (haskell-project-cabal-dir project)))
;; (format "%scabal-dev/packages-%s.conf/"
;; (if (string-match "/$" cabal-path)
;; cabal-path
;; (concat cabal-path "/"))
;; (haskell-ghc-version)))
;; (haskell-package-conf-user-path-get))
;; (haskell-package-conf-user-path-get)))
(defun haskell-package-conf-user-path-get ()
"Get the user conf path."
(let ((out (shell-command-to-string "ghc-pkg --user list no-results-please")))
(string-match "\n\\(.*\\):\n" out) (match-string 1 out)))
(defun haskell-package-conf-global-path-get ()
"Get the global conf path."
(let ((out (shell-command-to-string "ghc-pkg --global list no-results-please")))
(string-match "\n\\(.*\\):\n" out) (match-string 1 out)))
(defun haskell-package-get-all (conf)
"Get all package descriptions for the given `conf'."
(let ((all (shell-command-to-string (format "ghc-pkg -f %s dump" conf))))
(mapcar (lambda (text)
(haskell-package-parse text))
(split-string all "\n---\n"))))
(defun haskell-package-get (conf name version)
"Get a package description for the given `name' and `version' in the given `conf'."
(haskell-package-parse
(shell-command-to-string
(format "ghc-pkg -f %s describe %s-%s"
conf
name
version))))
(cl-defstruct haskell-package "Haskell package object.")
(defun haskell-package-parse (text)
"Parse a package into a package object."
(let ((pkg (haskell-package-read-description text)))
(make-haskell-package
:name (cdr (assoc "name" pkg))
:version (cdr (assoc "version" pkg))
:id (cdr (assoc "id" pkg))
:license (cdr (assoc "license" pkg))
:copyright (cdr (assoc "copyright" pkg))
:maintainer (cdr (assoc "maintainer" pkg))
:stability (cdr (assoc "stability" pkg))
:homepage (cdr (assoc "homepage" pkg))
:package-url (cdr (assoc "package-url" pkg))
:description (cdr (assoc "description" pkg))
:categories (cdr (assoc "category" pkg))
:authors (cdr (assoc "author" pkg))
:is-exposed (equal "True" (cdr (assoc "exposed" pkg)))
:exposed-modules (split-string (or (cdr (assoc "exposed-modules" pkg)) "")
"[\n ]")
:hidden-modules (split-string (or (cdr (assoc "hidden-modules" pkg)) "")
"[\n ]")
:imports-dirs (cdr (assoc "imports-dirs" pkg))
:library-dirs (cdr (assoc "library-dirs" pkg))
:haskell-libraries (cdr (assoc "haskell-libraries" pkg))
:extra-libraries (cdr (assoc "extra-libraries" pkg))
:extra-ghci-libraries (cdr (assoc "extra-ghci-libraries" pkg))
:include-dirs (cdr (assoc "include-dirs" pkg))
:includes (cdr (assoc "includes" pkg))
:depends (cdr (assoc "depends" pkg))
:hugs-options (cdr (assoc "hugs-options" pkg))
:cc-options (cdr (assoc "cc-options" pkg))
:ld-options (cdr (assoc "ld-options" pkg))
:framework-dirs (cdr (assoc "framework-dirs" pkg))
:frameworks (cdr (assoc "frameworks" pkg))
:haddock-interfaces (cdr (assoc "haddock-interfaces" pkg))
:haddock-html (cdr (assoc "haddock-html" pkg)))))
(defun haskell-package-read-description (text)
"Return an association list of key-values from a pkg description string."
(let* ((marked (replace-regexp-in-string
"\n\\([^ ]\\)"
(lambda (match)
(concat "\n:" (substring match 1)))
text))
(alist (mapcar 'haskell-package-key-value
(split-string marked "\n:"))))
alist))
(defun haskell-package-key-value (entry)
"Return a (key . value) pair from an entry."
(let ((key-values (split-string entry ": ")))
(if (listp key-values)
(cons (car key-values)
(replace-regexp-in-string
"\n[ ]*"
" "
(mapconcat 'identity (cdr key-values) ": ")))
key-values)))
(defun haskell-package-list-get (conf)
"Get the list of packages in the given config."
(haskell-package-list-parse
(shell-command-to-string
(format "ghc-pkg -f %s list"
conf))))
(defun haskell-package-list-parse (text)
"Parse the list of installed packges."
(let* ((lines (split-string text "\n ")))
(mapcar
(lambda (line)
(string-match "^{?\\([a-zA-Z0-9-_]+\\)-\\([0-9.]+\\)}?$" line)
(cons (match-string 1 line) (match-string 2 line)))
(cl-delete-if
(lambda (line)
(not (string-match "^{?[a-zA-Z0-9-_]+-[0-9.]+}?$" line)))
lines))))
(provide 'haskell-package)
;;; haskell-package.el ends here
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