;;; guix-read.el --- Minibuffer readers
-;; Copyright © 2015 Alex Kost <alezost@gmail.com>
+;; Copyright © 2015
, 2016 Alex Kost <alezost@gmail.com>
;; This file is part of GNU Guix.
(require 'guix-help-vars)
(require 'guix-utils)
-(require 'guix-base)
-
-(defun guix-read-file-name (prompt &optional dir default-filename
- mustmatch initial predicate)
- "Read file name.
-This function is similar to `read-file-name' except it also
-expands the file name."
- (expand-file-name (read-file-name prompt dir default-filename
- mustmatch initial predicate)))
-
-(defmacro guix-define-reader (name read-fun completions prompt)
- "Define NAME function to read from minibuffer.
-READ-FUN may be `completing-read', `completing-read-multiple' or
-another function with the same arguments."
- `(defun ,name (&optional prompt initial-contents)
- (,read-fun ,(if prompt
- `(or prompt ,prompt)
- 'prompt)
- ,completions nil nil initial-contents)))
-
-(defmacro guix-define-readers (&rest args)
- "Define reader functions.
-
-ARGS should have a form [KEYWORD VALUE] ... The following
-keywords are available:
-
- - `completions-var' - variable used to get completions.
-
- - `completions-getter' - function used to get completions.
-
- - `single-reader', `single-prompt' - name of a function to read
- a single value, and a prompt for it.
-
- - `multiple-reader', `multiple-prompt' - name of a function to
- read multiple values, and a prompt for it.
-
- - `multiple-separator' - if specified, another
- `<multiple-reader-name>-string' function returning a string
- of multiple values separated the specified separator will be
- defined."
- (let (completions-var
- completions-getter
- single-reader
- single-prompt
- multiple-reader
- multiple-prompt
- multiple-separator)
-
- ;; Process the keyword args.
- (while (keywordp (car args))
- (pcase (pop args)
- (`:completions-var (setq completions-var (pop args)))
- (`:completions-getter (setq completions-getter (pop args)))
- (`:single-reader (setq single-reader (pop args)))
- (`:single-prompt (setq single-prompt (pop args)))
- (`:multiple-reader (setq multiple-reader (pop args)))
- (`:multiple-prompt (setq multiple-prompt (pop args)))
- (`:multiple-separator (setq multiple-separator (pop args)))
- (_ (pop args))))
-
- (let ((completions
- (cond ((and completions-var completions-getter)
- `(or ,completions-var
- (setq ,completions-var
- (funcall ',completions-getter))))
- (completions-var
- completions-var)
- (completions-getter
- `(funcall ',completions-getter)))))
- `(progn
- ,(when (and completions-var
- (not (boundp completions-var)))
- `(defvar ,completions-var nil))
-
- ,(when single-reader
- `(guix-define-reader ,single-reader completing-read
- ,completions ,single-prompt))
-
- ,(when multiple-reader
- `(guix-define-reader ,multiple-reader completing-read-multiple
- ,completions ,multiple-prompt))
-
- ,(when (and multiple-reader multiple-separator)
- (let ((name (intern (concat (symbol-name multiple-reader)
- "-string"))))
- `(defun ,name (&optional prompt initial-contents)
- (guix-concat-strings
- (,multiple-reader prompt initial-contents)
- ,multiple-separator))))))))
+(require 'guix-backend)
+(require 'guix-guile)
+
+\f
+;;; Receivable lists of packages, lint checkers, etc.
+
+(guix-memoized-defun guix-graph-type-names ()
+ "Return a list of names of available graph node types."
+ (guix-eval-read (guix-make-guile-expression 'graph-type-names)))
+
+(guix-memoized-defun guix-refresh-updater-names ()
+ "Return a list of names of available refresh updater types."
+ (guix-eval-read (guix-make-guile-expression 'refresh-updater-names)))
+
+(guix-memoized-defun guix-lint-checker-names ()
+ "Return a list of names of available lint checkers."
+ (guix-eval-read (guix-make-guile-expression 'lint-checker-names)))
+
+(guix-memoized-defun guix-package-names ()
+ "Return a list of names of available packages."
+ (sort
+ ;; Work around <https://github.com/jaor/geiser/issues/64>:
+ ;; list of strings is parsed much slower than list of lists,
+ ;; so we use 'package-names-lists' instead of 'package-names'.
+
+ ;; (guix-eval-read (guix-make-guile-expression 'package-names))
+
+ (mapcar #'car
+ (guix-eval-read (guix-make-guile-expression
+ 'package-names-lists)))
+ #'string<))
+
+(guix-memoized-defun guix-license-names ()
+ "Return a list of names of available licenses."
+ (guix-eval-read (guix-make-guile-expression 'license-names)))
+
+\f
+;;; Readers
(guix-define-readers
:completions-var guix-help-system-types
:multiple-prompt "Package,s: "
:multiple-separator " ")
+(guix-define-readers
+ :completions-getter guix-license-names
+ :single-reader guix-read-license-name
+ :single-prompt "License: ")
+
(provide 'guix-read)
;;; guix-read.el ends here
HCoop / jackhill / guix / guix.git / blobdiff