discussion and development of piem
 help / color / mirror / code / Atom feed
blob 3381b012edfcbbe87f3a0be83eb6b36e1eedbae4 6607 bytes (raw)
name: piem-b4.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
 
;;; piem-b4.el --- Emacs interface to the b4 tool  -*- lexical-binding: t; -*-

;; Copyright (C) 2020  Kyle Meyer

;; Author: Kyle Meyer <kyle@kyleam.com>
;; Keywords: vc, tools
;; Version: 0.0.0
;; Package-Requires: ((emacs "26.3") (transient "0.2.0"))

;; This program 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.

;; This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;;

;;; Code:

(require 'cl-lib)
(require 'mail-extr)
(require 'message)
(require 'piem)
(require 'transient)

\f
;;;; Options

(defgroup piem-b4 nil
  "Control the b4 tool from Emacs."
  :link '(info-link "(piem)b4 integration")
  :group 'piem)

(defcustom piem-b4-b4-executable "b4"
  "Which b4 executable to use."
  :type 'string)

\f
;;;; Internals

;; In many cases, we don't really need b4 to download the mbox for us,
;; as we already have our own mbox to URL mapping.  Perhaps we should
;; default to using that, but it should still be an option to use b4
;; so that we honor its customization/URL resolution.
(defun piem-b4--get-am-files (mid coderepo args)
  (let* ((outdir (file-name-as-directory
                  (make-temp-file "piem-b4-" t)))
         (root (concat outdir "m"))
         (mbox-thread (concat root "-piem"))
         (custom-p nil))
    (when-let ((fn (run-hook-with-args-until-success
                    'piem-mid-to-thread-functions mid)))
      (with-temp-file mbox-thread
        (funcall fn)
        (unless (= (point-max) 1)
          (setq custom-p t))))
    ;; Move to the coderepo so that we pick up any b4 configuration
    ;; from there.
    (apply #'piem-process-call coderepo piem-b4-b4-executable "am"
           (and custom-p
                (concat "--use-local-mbox=" mbox-thread))
           (concat "--outdir=" outdir)
           (concat "--mbox-name=m")
           (append args (list mid)))
    (let ((mbox-cover (concat root ".cover"))
          (mbox-am (concat root ".mbx")))
      (list (and (file-exists-p mbox-cover)
                 mbox-cover)
            (if (file-exists-p mbox-am)
                mbox-am
              (error "Expected mbox file does not exist: %s" mbox-am))))))

\f
;;;; Commands

;;;###autoload
(defun piem-b4-am-ready-from-mbox (mbox &optional args)
  "Extract an am-ready mbox from a thread of messages.
MBOX is the file name of an mbox that contains a patch series.
ARGS is a list of arguments to pass to `b4 am'."
  (interactive (list (read-file-name "mbox: ")
                     (transient-args 'piem-b4-am)))
  (apply #'piem-process-start nil piem-b4-b4-executable "am"
         (cons (concat "--use-local-mbox=" mbox) args)))

;;;###autoload
(defun piem-b4-am-ready-from-mid (mid &optional args)
  "Download the thread for MID and and extract an am-ready mbox.
MID is a Message-Id to pass directly to `b4 am', along with the
list of arguments specified via ARGS."
  (interactive (list (read-string "Message ID: " nil nil (piem-mid))
                     (transient-args 'piem-b4-am)))
  (apply #'piem-process-start nil piem-b4-b4-executable "am"
         (append args (list mid))))

;;;###autoload
(defun piem-b4-am-from-mid (mid &optional args)
  "Get the thread for MID, extract an am-ready mbox, and apply it.
Try to get a thread for the Message-Id MID with
`piem-mid-to-thread-functions', falling back to letting b4
download it.  After calling `b4 am' with ARGS to prepare an
am-ready mbox, feed the result to `git am'."
  (interactive (list (or (piem-mid)
                         (read-string "Message ID: "))
                     (transient-args 'piem-b4-am)))
  (when-let ((badopt (cl-some
                      (lambda (arg)
                        (and (string-match
                              (rx string-start
                                  (group (or "--outdir" "--mbox-name")) "=")
                              arg)
                             (match-string 1 arg)))
                      args)))
    (user-error "%s is incompatible with this command" badopt))
  (pcase-let* ((coderepo (piem-inbox-coderepo-maybe-read))
               (`(,cover ,mbox-file)
                (piem-b4--get-am-files mid coderepo args))
               (default-directory coderepo))
    (piem-am mbox-file
             nil
             (with-temp-buffer
               (insert-file-contents (or cover mbox-file))
               (piem-extract-mbox-info))
             coderepo)))

(define-infix-argument piem-b4-am:--outdir ()
  :description "Output directory"
  :class 'transient-option
  :shortarg "-o"
  :argument "--outdir="
  :reader #'transient-read-existing-directory)

(define-infix-argument piem-b4-am:--mbox-name ()
  :description "Base file name for mbox"
  :class 'transient-option
  :shortarg "-n"
  :argument "--mbox-name="
  :reader #'read-string)

(define-infix-argument piem-b4-am:--use-version ()
  :description "Desired version of patch series"
  :class 'transient-option
  :shortarg "-v"
  :argument "--use-version="
  :reader #'transient-read-number-N+)

(define-infix-argument piem-b4-am:--cherry-pick ()
  :description "Select a subset of patches by number"
  :class 'transient-option
  :shortarg "-P"
  :argument "--cherry-pick="
  :reader #'read-string)

;;;###autoload (autoload 'piem-b4-am "piem-b4" nil t)
(define-transient-command piem-b4-am ()
  "Filter mbox to patches and feed to git-am"
  ["General options"
   ("-c" "Check newer versions" "--check-newer-revisions")
   ("-C" "Don't use local cache" "--no-cache")
   ("-s" "Add my signed-off-by" "--add-my-sob")
   ("-S" "Apply trailers without checking email addresses" "--sloppy-trailers")
   ("-t" "Apply cover letter trailers" "--apply-cover-trailers")
   ("-T" "Do not add trailers" "--no-add-trailers")
   (piem-b4-am:--use-version)
   (piem-b4-am:--cherry-pick)]
  ["Options for creating am-ready mboxes"
   (piem-b4-am:--outdir)
   (piem-b4-am:--mbox-name)]
  ["Actions"
   [("a" "Message ID -> mbox -> git-am" piem-b4-am-from-mid)]
   [("b" "Local mbox -> am-ready mbox" piem-b4-am-ready-from-mbox)
    ("i" "Message ID -> am-ready mbox" piem-b4-am-ready-from-mid)]])

;;; piem-b4.el ends here
(provide 'piem-b4)

debug log:

solving 3381b01 ...
found 3381b01 in https://git.kyleam.com/piem/

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.kyleam.com/piem/

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).