Add "(tiny change)".

[elisp/epg.git] / epg-config.el

diff --git a/epg-config.el b/epg-config.el
index d28fcce..c5c5a7f 100644 (file)
--- a/epg-config.el
+++ b/epg-config.el
@@ -23,6 +23,8 @@
 
 ;;; Code:
 
+(require 'epg-package-info)
+
 (defgroup epg ()
   "The EasyPG Library"
   :group 'emacs)
@@ -38,18 +40,27 @@
   :type 'string)
 
 (defcustom epg-gpg-home-directory nil
-  "The directory which contains the `gpg' configuration files."
+  "The directory which contains the configuration files of `epg-gpg-program'."
   :group 'epg
   :type '(choice (const :tag "Default" nil) directory))
 
-(defconst epg-version-number "0.0.4")
+(defcustom epg-passphrase-coding-system nil
+  "Coding system to use with messages from `epg-gpg-program'."
+  :group 'epg
+  :type 'symbol)
+
+(defcustom epg-debug nil
+  "If non-nil, debug output goes to the \" *epg-debug*\" buffer.
+Note that the buffer name starts with a space."
+  :group 'epg
+  :type 'boolean)
 
 (defconst epg-gpg-minimum-version "1.4.3")
 
 ;;;###autoload
 (defun epg-configuration ()
   "Return a list of internal configuration parameters of `epg-gpg-program'."
-  (let (config type)
+  (let (config groups type args)
     (with-temp-buffer
       (apply #'call-process epg-gpg-program nil (list t nil) nil
             (append (if epg-gpg-home-directory
@@ -58,16 +69,34 @@
       (goto-char (point-min))
       (while (re-search-forward "^cfg:\\([^:]+\\):\\(.*\\)" nil t)
        (setq type (intern (match-string 1))
-             config (cons (cons type
-                                (if (memq type
-                                          '(pubkey cipher digest compress))
-                                    (mapcar #'string-to-number
-                                            (delete "" (split-string
-                                                        (match-string 2)
-                                                        ";")))
-                                  (match-string 2)))
-                          config))))
-    config))
+             args (match-string 2))
+       (cond
+        ((eq type 'group)
+         (if (string-match "\\`\\([^:]+\\):" args)
+                 (setq groups
+                       (cons (cons (downcase (match-string 1 args))
+                                   (delete "" (split-string
+                                               (substring args
+                                                          (match-end 0))
+                                               ";")))
+                             groups))
+           (if epg-debug
+               (message "Invalid group configuration: %S" args))))
+        ((memq type '(pubkey cipher digest compress))
+         (if (string-match "\\`\\([0-9]+\\)\\(;[0-9]+\\)*" args)
+             (setq config
+                   (cons (cons type
+                               (mapcar #'string-to-number
+                                       (delete "" (split-string args ";"))))
+                         config))
+           (if epg-debug
+               (message "Invalid %S algorithm configuration: %S"
+                        type args))))
+        (t
+         (setq config (cons (cons type args) config))))))
+    (if groups
+       (cons (cons 'groups groups) config)
+      config)))
 
 (defun epg-config--parse-version (string)
   (let ((index 0)
@@ -98,6 +127,14 @@
     (unless (>= (epg-config--compare-version version minimum-version) 0)
       (error "Unsupported version: %s" (cdr entry)))))
 
+;;;###autoload
+(defun epg-expand-group (config group)
+  "Look at CONFIG and try to expand GROUP."
+  (let ((entry (assq 'groups config)))
+    (if (and entry
+            (setq entry (assoc (downcase group) (cdr entry))))
+       (cdr entry))))
+
 (provide 'epg-config)
 
 ;;; epg-config.el ends here