;;; piem.el --- Emacs tools for working with public-inbox -*- lexical-binding: t; -*- ;; Copyright (C) 2020-2021 all contributors ;; Author: Kyle Meyer ;; Keywords: vc, tools ;; Version: 0.2.0 ;; Package-Requires: ((emacs "26.3") (transient "0.3.0")) ;; Homepage: https://git.kyleam.com/piem/about/ ;; 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 . ;;; Commentary: ;; This library provides functionality for working with public-inbox ;; archives [1] within Emacs (e.g., applying a patch series to the ;; associated Git repository or downloading an mbox for the thread and ;; injecting it into a local Maildir directory). The user option ;; `piem-inboxes' defines a set of public-inbox archives. For most ;; the functions here to do something useful, the current buffer needs ;; to be linked to an inbox in that list, which requires enabling the ;; minor mode provided by at least one integration library (such as ;; `piem-gnus', `piem-eww', or `piem-notmuch'). ;; ;; [1] https://public-inbox.org/README ;;; Code: (require 'browse-url) (require 'cl-lib) (require 'mail-extr) (require 'mail-parse) (require 'message) (require 'mm-decode) (require 'piem-maildir) (require 'subr-x) (require 'transient) (require 'url) (require 'url-handlers) (require 'url-http) ;;;; Options (defgroup piem () "Emacs tools for working with public-inbox archives." :link '(info-link "(piem)Top") :group 'tools) ;; TODO: Decide how to deal with inboxes that map to more than one ;; coderepo. This is important to support for people that want to ;; use a catchall inbox for small projects which they don't think ;; (yet) need a dedicated address. (defcustom piem-inboxes nil "List of public-inbox-archived projects. Elements have the form (NAME . INFO), where INFO is a property list that supports the following properties: :address :listid The email address and List-ID for the inbox. :coderepo Local path to the code repository associated with the inbox. This value should point to the working tree. Note that this differs from public-inbox-config's coderepo, which is a link to another section that must point to the repository's git directory. :url A URL hosting HTTPS archives. This value must end with a slash. :maildir A Maildir directory to inject messages into. Here's an example for the public-inbox project itself: (\"public-inbox\" :coderepo \"~/src/public-inbox/\" :address \"meta@public-inbox.org\" :listid \"meta.public-inbox.org\" :url \"https://public-inbox.org/meta/\" :maildir \"~/.local/share/mail/.lists.mail.public-inbox\") Inboxes may also be fully or partially defined via public-inbox configuration when `piem-get-inboxes-from-config' is non-nil. Prefer the function `piem-merged-inboxes' over inspecting `piem-inboxes' directly so that values from the public-inbox configuration are considered." ;; Note: When adding a property to the list above, update ;; `piem--merge-config-inboxes' so that the value can also be set in ;; ~/.public-inbox/config. :type '(alist :key-type string :value-type (plist :value-type string)) :set (lambda (var val) (set var val) (when (fboundp 'piem-clear-merged-inboxes) (piem-clear-merged-inboxes)))) (defcustom piem-get-inboxes-from-config nil "Whether to construct inboxes from public-inbox's configuration. If any inboxes are mirrored locally, some of the information in the option `piem-inboxes' may already be present in ~/.public-inbox/config. When this option is non-nil, the function `piem-merged-inboxes' combines these two sources, with values from `piem-inboxes' taking precedence. For details, see Info node `(piem) Registering inboxes'. If you change the option `piem-inboxes' outside of the `customize' interface or change public-inbox's configuration, the merged representation can be updated by calling `piem-clear-merged-inboxes'." :package-version '(piem . "0.3.0") :type 'boolean) (defcustom piem-get-inbox-functions nil "Functions tried to get the inbox of the current buffer. Each function should accept no arguments and return the name of the inbox associated with the current buffer or nil." :type 'hook) (defcustom piem-get-mid-functions nil "Functions tried to get the message ID of the current buffer. Each function should accept no arguments and return the message ID associated with the current buffer or nil." :type 'hook) (defcustom piem-mid-to-thread-functions nil "Functions tried to create an mbox from a message ID. Each function should accept one argument, the message ID. If the function knows how to create an mbox for the message ID, it should return a function that takes no arguments and inserts the mbox's contents (in mboxrd format) in the current buffer." :type 'hook) (defcustom piem-am-ready-mbox-functions nil "Functions tried to get an mbox to be fed to `git am'. The functions are called with no arguments. If a function knows how to create an mbox, it should return a function that takes no arguments and inserts the mbox's contents in the current buffer. The return value can also be (FUNCTION . FORMAT), where FORMAT is either \"mbox\" or \"mboxrd\" and maps to the --patch-format value passed to `git am'. If unspecified, \"mboxrd\" is used." :type 'hook) (defcustom piem-add-message-id-header nil "Whether to add Message-Id header to non-mail patches. If this value is non-nil and a patch returned by a function in `piem-am-ready-mbox-functions' looks like a patch that was attached rather than sent inline, add a Message-Id header with the return value of `piem-mid'." :type 'boolean) (defcustom piem-git-executable (or (and (boundp 'magit-git-executable) magit-git-executable) "git") "Which git executable to use." :type 'string) (defcustom piem-use-magit t "Whether to use Magit for some user-facing operations." :type 'boolean) (defcustom piem-default-branch-function #'piem-name-branch-who-what-v "Function that generates the default branch on completion. The function is called with one argument, a plist that contains the following information about the patch series: :date :from :subject The date, sender, and subject of the cover letter, if any, or of the first patch otherwise. :base-commit The reported base commit of the patch, if any." :type 'function) (defcustom piem-am-create-worktree nil "Whether to create a dedicated worktree for applying patches." :type 'boolean) (defcustom piem-am-read-worktree-function #'piem-am-read-worktree-sibling-named-by-branch "Function that reads a to-be-created worktree from the user. This function is called with two arguments, the directory of the code repository that the worktree will be created from and the name of the branch that will be created. The branch may be nil if the caller requested a detached HEAD." :type 'function) (defcustom piem-maildir-directory nil "Default directory to inject public-inbox threads into. If non-nil, this must be an existing Maildir directory. This can be overriden on a per-list basis by using the \":maildir\" keyword in `piem-inboxes'." :type 'string) (defcustom piem-mail-injection-skipif-predicate nil "Predicate to decide whether to skip injecting a message. The function is called with the message ID (no surrounding brackets) within a buffer that is narrowed to the message. The function does not need to worry about saving point. A non-nil return value signals that `piem-inject-thread-into-maildir' should skip the message. Notmuch users can use `piem-notmuch-known-mid-p' as the predicate to skip messages that are already in the Notmuch database." :type 'function) (defcustom piem-after-mail-injection-functions nil "Functions called after writing messages to `piem-maildir-directory'. Functions should accept one argument, the message ID given to `piem-inject-thread-into-maildir'." :type 'hook) (defcustom piem-browse-url-browser-function nil "Overriding value for `browse-url-browser-function'. public-inbox's HTTP interface is well suited for browsers like w3m and EWW, allowing you to stay in Emacs rather than launch an external browser. However, assuming you have `browse-url' configured to usually go through an external browser, sending public-inbox URLs through, say, EWW would require you to configure `browse-url-browser-function' with a regular expression for each inbox URL that you want to be handled by `eww-browse-url'. Instead, you can simply set this option to `eww-browse-url' (or anything else `browse-url-browser-function' accepts), and piem will use it when calling `browse-url'. When this option is nil, piem calls `browse-url' without overriding the value of `browse-url-browser-function'." :type (append '(choice (const :tag "Don't override `browse-url-browser-function'" nil)) (cdr (get 'browse-url-browser-function 'custom-type)))) ;;;; Subprocess handling (defvar piem-process-mode-font-lock-keywords `((,(rx line-start ";;; " (or "process" "directory" "time") ":" (one-or-more not-newline) line-end) (0 font-lock-comment-face t)) (,(rx line-start "Process " (one-or-more not-newline) " finished" line-end) (0 font-lock-comment-face)))) (defconst piem-process-output-buffer "*piem-process-output*") (define-derived-mode piem-process-mode nil "piem-process" "Major mode for displaying processes created by piem." :group 'piem (setq buffer-read-only t) (setq-local window-point-insertion-type t) (setq-local font-lock-defaults '(piem-process-mode-font-lock-keywords))) (define-error 'piem-process-error "piem process error") (defvar-local piem--buffer-process nil) (defun piem--process-go (dir program program-args fn) (setq dir (or dir default-directory)) (let ((buffer (get-buffer-create piem-process-output-buffer))) (with-current-buffer buffer (when (and piem--buffer-process (process-live-p piem--buffer-process)) (user-error "Buffer %s already has an active process: %s" (current-buffer) piem--buffer-process)) (unless (derived-mode-p 'piem-process-mode) (piem-process-mode)) (setq default-directory (file-name-as-directory dir)) (goto-char (point-max)) (display-buffer buffer) (let ((inhibit-read-only t)) (insert (format " %s ;;; process: %S ;;; directory: %s ;;; time: %s " (char-to-string 12) ; form feed (cons program program-args) default-directory (format-time-string "%FT%T%z"))) (funcall fn))))) (defun piem-process-start (dir program &rest program-args) (setq program-args (remq nil program-args)) (piem--process-go dir program program-args (lambda () (setq piem--buffer-process (apply #'start-process (file-name-nondirectory program) (current-buffer) program program-args))))) (defun piem-process-call (dir program &rest program-args) (setq program-args (remq nil program-args)) (piem--process-go dir program program-args (lambda () (unless (= 0 (apply #'call-process program nil t nil program-args)) (signal 'piem-process-error (list (format "%s call in %s failed" program default-directory))))))) (defun piem-process-call-with-buffer-input (dir buffer program &rest program-args) (setq program-args (remq nil program-args)) (piem--process-go dir program program-args (lambda () (let ((outdir default-directory) (outbuf (current-buffer))) (with-current-buffer buffer (let ((default-directory outdir)) (unless (= 0 (apply #'call-process-region nil nil program nil outbuf nil program-args)) (signal 'piem-process-error (list (format "%s call in %s failed" program default-directory)))))))))) ;;;; Integration with public-inbox configuration (defun piem--git-config-list (&optional file) "Return a hash table that maps git-config keys to values. The value for each key is a list in the order that would be reported by `git config --get-all $key'. The first value has the highest precedence (i.e. what would be reported by `git config --get $key'). If FILE is non-nil, report configuration values from that file. Otherwise report values from all standard Git configuration files." (with-temp-buffer (unless (= 0 (apply #'call-process piem-git-executable nil '(t nil) nil "config" "--list" "-z" (append (and file (list "--file" file))))) (error "git-config call failed")) (goto-char (point-min)) (let ((cfg (make-hash-table :test #'equal))) (while (not (eobp)) (let* ((key-end (line-end-position)) (key (buffer-substring (point) key-end)) (value (progn (skip-chars-forward "^\0") (buffer-substring (1+ key-end) (point))))) (puthash key (cons value (gethash key cfg)) cfg) (forward-char 1))) cfg))) (defvar piem--inboxes 'unset) (defun piem-public-inbox-config-file () "Return public-inbox's configuration file." (or (getenv "PI_CONFIG") (expand-file-name "~/.public-inbox/config"))) (defun piem--merge-config-inboxes () (let ((cfg-file (piem-public-inbox-config-file))) (if (not (file-readable-p cfg-file)) (setq piem--inboxes piem-inboxes) (let ((case-fold-search t) (pi-cfg (piem--git-config-list cfg-file)) cfg-inboxes) (maphash (lambda (key val) (when (string-match (rx string-start "publicinbox." (group (one-or-more not-newline)) "." (group (or "address" "coderepo" "listid" "maildir" "url")) string-end) key) (let* ((inbox-name (match-string 1 key)) (inbox-item (assoc inbox-name cfg-inboxes)) (prop-name (intern (concat ":" (match-string 2 key)))) (prop-pair (list prop-name (car val)))) (when-let ((coderepo (and (eq prop-name :coderepo) (car (gethash (format "coderepo.%s.dir" (car val)) pi-cfg))))) (setq prop-pair (list :coderepo (replace-regexp-in-string "/\\.git/?\\'" "" coderepo)))) (if inbox-item (setcdr inbox-item (nconc prop-pair (cdr inbox-item))) (push (cons inbox-name prop-pair) cfg-inboxes))))) pi-cfg) (let (merged) (dolist (name (delete-dups (mapcar #'car (append cfg-inboxes piem-inboxes)))) (push (append (list name) (alist-get name piem-inboxes nil nil #'equal) (alist-get name cfg-inboxes nil nil #'equal)) merged)) (setq piem--inboxes merged)))))) (defun piem-merged-inboxes () "Return list of inboxes. This list has the same form as described in the option `piem-inboxes'. If `piem-get-inboxes-from-config' is non-nil, the return value is constructed by merging inboxes defined in public-inbox's configuration with the inboxes from `piem-inboxes', with the values in the latter taking precedence. If `piem-get-inboxes-from-config' is nil, this value matches `piem-inboxes'." (if (not piem-get-inboxes-from-config) piem-inboxes (when (eq piem--inboxes 'unset) (piem--merge-config-inboxes)) piem--inboxes)) (defun piem-clear-merged-inboxes () "Clear inboxes cached by `piem-merged-inboxes'. When `piem-get-inboxes-from-config' is set to a non-nil value, `piem-merged-inboxes' constructs a set of inboxes by merging `piem-inboxes' and public-inbox's configuration and then caches the result. If you change `piem-inboxes' outside of the customize interface or change public-inbox's configuration, call this command to clear the cached value." (interactive) (setq piem--inboxes 'unset)) ;;;; Extractors (defun piem--ensure-trailing-slash (s) (if (string-suffix-p "/" s) s (concat s "/"))) (defun piem-message-link-re (url &optional mid) "Return a regular expression matching a public-inbox url. URL should be the top-level url for the inbox. If MID is non-nil, make the match specific for that message." (rx-to-string `(and ,(piem--ensure-trailing-slash url) (group ,(or (and mid (piem-escape-mid mid)) '(one-or-more (not (any "/" "\n"))))) "/" (group (zero-or-one (or "raw" "t.mbox.gz" (and (or "t" "T") "/#" (one-or-more (not (any "/" "\n"))))))) string-end))) (defun piem--message-fetch-decoded-fields (headers) (save-excursion (save-restriction (message-narrow-to-head) (mapcar (lambda (header) (when-let ((val (message-fetch-field header))) (mail-decode-encoded-word-string val))) headers)))) (defun piem-inbox-by-header-match () "Return inbox based on matching message headers. This should be called from a buffer containing a message and is intended to be used by libraries implementing a function for `piem-get-mid-functions'." (pcase-let ((`(,listid ,to ,cc) (piem--message-fetch-decoded-fields '("list-id" "to" "cc")))) (catch 'hit (dolist (inbox (piem-merged-inboxes)) (let* ((info (cdr inbox)) (p-listid (plist-get info :listid))) (when (and listid p-listid (string-match-p (concat "<" (regexp-quote p-listid) ">") listid)) (throw 'hit (car inbox))) (when-let ((addr (plist-get info :address)) (to (mapconcat #'identity (list to cc) " "))) (when (string-match-p (regexp-quote addr) to) (throw 'hit (car inbox))))))))) (defun piem-inbox () "Return the current buffer's inbox." (run-hook-with-args-until-success 'piem-get-inbox-functions)) (defun piem-inbox-get (key &optional inbox) "Return value of KEY associated with INBOX. The key-value pair may be defined in `piem-inboxes' or public-inbox's configuration. If INBOX is nil, use the inbox returned by `piem-inbox'." (when-let ((p (or inbox (piem-inbox)))) (plist-get (cdr (assoc p (piem-merged-inboxes))) key))) (defun piem-inbox-coderepo (&optional inbox) "Return the code repository of current buffer's inbox." (when-let ((repo (piem-inbox-get :coderepo inbox))) (file-name-as-directory (expand-file-name repo)))) (defun piem-inbox-maildir-directory (&optional inbox) "Return the maildir for INBOX. If INBOX is nil, use the inbox returned by `piem-inbox'. If the INBOX doesn't have a maildir configured (via `piem-inboxes' or public-inbox's configuration), return the value of `piem-maildir-directory'." (or (piem-inbox-get :maildir inbox) piem-maildir-directory)) (defun piem-inbox-by-url-match (url) "Return inbox based on matching URL against `:url'." (setq url (piem--ensure-trailing-slash url)) (catch 'hit (dolist (inbox (piem-merged-inboxes)) (when-let ((info (cdr inbox)) (p-url (plist-get info :url))) (setq p-url (piem--ensure-trailing-slash p-url)) (when (string-match-p (regexp-quote p-url) url) (throw 'hit (car inbox))))))) (defun piem-inbox-coderepo-maybe-read () "Like `piem-inbox-coderepo', but fall back to reading the repo." (let ((repo (or (piem-inbox-coderepo) (and (bound-and-true-p projectile-known-projects) (expand-file-name (completing-read "Project: " projectile-known-projects nil t nil nil (when-let ((current (and (fboundp 'projectile-project-root) (projectile-project-root)))) (abbreviate-file-name current))))) (and (bound-and-true-p project-list-file) (file-exists-p project-list-file) (fboundp 'project-prompt-project-dir) (expand-file-name (project-prompt-project-dir))) (and piem-use-magit (fboundp 'magit-read-repository) (magit-read-repository)) (read-directory-name "Git repository: ")))) (if (equal repo "") (user-error "No code repository specified") (file-name-as-directory repo)))) (defun piem-mid () "Return the current buffer's message ID." (run-hook-with-args-until-success 'piem-get-mid-functions)) (defun piem--insert-message-id-header (mid) ;; Be strict about case because this is coming from ;; git-format-patch. (let ((case-fold-search nil)) (while (re-search-forward (rx line-start "From " (>= 40 hex-digit) " Mon Sep 17 00:00:00 2001" line-end) nil t) (catch 'has-message-id (let ((header-count 0)) (while (and (= (forward-line) 0) (not (looking-at-p (rx line-start (zero-or-one space) line-end)))) (cond ((looking-at-p (rx line-start "Message-Id: <" (one-or-more not-newline) ">" line-end)) (throw 'has-message-id nil)) ((looking-at-p (rx line-start (or "From" "Date" "Subject") ": " not-newline)) (cl-incf header-count)))) (when (= header-count 3) ;; Found all the expected headers before hitting a ;; blank line. Assume we're in a header. (insert (format "Message-Id: <%s>\n" mid)))))))) (defun piem-am-ready-mbox (&optional buffer-name) "Generate a buffer containing an am-ready mbox. The return value is (BUFFER . FORMAT), where FORMAT is either \"mbox\" or \"mboxrd\". Callers are responsible for killing the buffer. By default the buffer name is hidden, but when BUFFER-NAME is non-nil, use that name instead." (when-let ((res (run-hook-with-args-until-success 'piem-am-ready-mbox-functions))) (pcase-let ((buffer (generate-new-buffer (or buffer-name " *piem am-ready mbox*"))) (`(,fn . ,format) (if (member (cdr-safe res) '("mbox" "mboxrd")) res (cons res "mboxrd"))) (mid (and piem-add-message-id-header (piem-mid))) (has-content nil)) (with-current-buffer buffer (funcall fn) (setq has-content (< 1 (point-max))) (when (and has-content mid) (goto-char (point-min)) (piem--insert-message-id-header mid))) (if has-content (cons buffer format) (kill-buffer buffer) nil)))) ;;;; Link handling (defconst piem--unreserved-chars (append url-unreserved-chars ;; These extra characters follow what's used by ;; public-inbox's mid_escape(). (list ?! ?$ ?& ?' ?\( ?\) ?* ?+ ?, ?= ?: ?\; ?@))) (defun piem-escape-mid (mid) "Escape MID for use in path part of a public-inbox URL." (url-hexify-string mid piem--unreserved-chars)) (defun piem-mid-url (mid &optional inbox) "Return a public-inbox URL for MID. The URL for INBOX may be defined in `piem-inboxes' or public-inbox's configuration. If INBOX is nil, use the inbox returned by `piem-inbox'." (concat (piem--ensure-trailing-slash (or (piem-inbox-get :url inbox) (user-error "Couldn't find URL for %s" (or inbox "current buffer")))) (piem-escape-mid mid))) ;;;###autoload (defun piem-copy-mid-url (&optional browse) "Copy public-inbox URL for the current buffer's message. With prefix argument BROWSE, call `browse-url' on the URL afterwards. If `piem-browse-url-browser-function' is non-nil, it is used as the value of `browse-url-browser-function'." (interactive "P") (let ((url (piem-mid-url (or (piem-mid) (user-error "No message ID found for the current buffer")) (piem-inbox)))) (prog1 (kill-new (message "%s" url)) (when browse (let ((browse-url-browser-function (or piem-browse-url-browser-function browse-url-browser-function))) (browse-url url)))))) ;;;; Download helpers (defvar piem--has-gunzip) (defun piem-gunzip-buffer () (unless (if (boundp 'piem--has-gunzip) piem--has-gunzip (setq piem--has-gunzip (executable-find "gunzip"))) (user-error "gunzip executable not found")) (goto-char (point-min)) (unless (= 0 (call-process-region nil nil "gunzip" nil t)) (error "Decompressing buffer failed")) (delete-region (point) (point-max)) (goto-char (point-min))) (defmacro piem-with-url-contents (url &rest body) "Insert URL contents literally into temporary buffer and evaluate BODY." (declare (indent 1) (debug t)) (let ((u (cl-gensym "url"))) `(with-temp-buffer (set-buffer-multibyte nil) ;; This mostly copies `url-insert-file-contents', but it embeds ;; `url-http--insert-file-helper' and uses `url-insert' rather ;; than `url-insert-buffer-contents' to insert the contents ;; literally. (let* ((,u ,url) (buffer (url-retrieve-synchronously ,u))) (unless buffer (signal 'file-error (list ,u "No Data"))) ;; This error handling follows what's in ;; `url-http--insert-file-helper'. (with-current-buffer buffer (when (bound-and-true-p url-http-response-status) (unless (or (and (>= url-http-response-status 200) (< url-http-response-status 300)) (= url-http-response-status 304)) (let ((desc (nth 2 (assq url-http-response-status url-http-codes)))) (kill-buffer buffer) (signal 'file-error (list ,u desc)))))) (url-insert buffer)) (goto-char (point-min)) ,@body))) ;;;; Maildir injection (defun piem--write-mbox-to-maildir (maildir-directory) (let ((n-added 0) (n-skipped 0)) (while (and (not (eobp)) (re-search-forward "^From mboxrd@z" nil t)) (let* ((beg (line-beginning-position 2)) (end (or (and (re-search-forward "^From mboxrd@z" nil t) (progn (goto-char (line-beginning-position 0)) (point-marker))) (point-max-marker))) (basename (piem-maildir-make-uniq-maildir-id)) (tmpfile (concat maildir-directory "/tmp/" basename))) (goto-char beg) (if (and (functionp piem-mail-injection-skipif-predicate) (save-excursion (save-restriction (narrow-to-region beg end) (funcall piem-mail-injection-skipif-predicate (replace-regexp-in-string "\\`<\\(.*\\)>\\'" "\\1" (or (save-restriction (save-excursion (message-narrow-to-head-1) (message-fetch-field "message-id" t))) (error "Message lacks message-ID"))))))) (cl-incf n-skipped) (let ((case-fold-search nil)) (while (re-search-forward (rx line-start ">" (group (zero-or-more ">") "From ")) end t) (replace-match "\\1" t))) (write-region beg end tmpfile nil nil nil 'excl) (piem-maildir-move-tmp-to-new maildir-directory basename) (delete-file tmpfile) (cl-incf n-added)) (goto-char end))) (cons n-added n-skipped))) ;;;###autoload (defun piem-inject-thread-into-maildir (mid &optional message-only) "Inject thread containing MID into `piem-inbox-maildir-directory'. If prefix argument MESSAGE-ONLY is non-nil, inject just the message for MID, not the entire thread. This function depends on :url being configured for entries in `piem-inboxes'." (interactive (list (or (piem-mid) (user-error "No message ID found for the current buffer")) current-prefix-arg)) (let ((maildir-directory (piem-inbox-maildir-directory))) (cond ((not maildir-directory) (user-error "No directory returned by `piem-inbox-maildir-directory'")) ((not (piem-maildir-dir-is-maildir-p maildir-directory)) (user-error "Does not look like a Maildir directory: %s" maildir-directory))) (let ((url (concat (piem-mid-url mid) (if message-only "/raw" "/t.mbox.gz")))) (piem-with-url-contents url (unless message-only (piem-gunzip-buffer)) (pcase-let ((`(,added-count . ,skipped-count) (piem--write-mbox-to-maildir maildir-directory))) (message "Added %d message%s%s for %s to %s" added-count (if (= added-count 1) "" "s") (if (> skipped-count 0) (format " (skipping %d)" skipped-count) "") mid (abbreviate-file-name maildir-directory)))) (run-hook-with-args 'piem-after-mail-injection-functions mid)))) ;;;; Patch handling (defun piem-am-extract-attached-patch (handle) "Return content for HANDLE if it looks like a patch." (and (listp handle) (let ((type (mm-handle-media-type handle)) (filename (mm-handle-filename handle))) (or (member type '("text/x-diff" "text/x-patch")) (and filename (equal type "text/plain") (string-suffix-p ".patch" filename t)))) (with-temp-buffer (mm-display-inline handle) (buffer-substring-no-properties (point-min) (point-max))))) (defun piem-extract-mbox-info (&optional buffer) "Collect information from message in BUFFER. If BUFFER is nil, the current buffer is used. Any message after the first will be ignored." (with-current-buffer (or buffer (current-buffer)) (let ((info (cl-mapcan #'list '(:date :from :subject) (piem--message-fetch-decoded-fields '("date" "from" "subject"))))) (when (re-search-forward (rx line-start "base-commit: " (group (>= 40 hex-digit)) line-end) nil t) (plist-put info :base-commit (match-string 1))) info))) (defvar piem-patch-subject-re (rx (zero-or-more space) "[" (zero-or-more (not (any "]" "\n"))) "PATCH" (zero-or-more (not (any "]" "\n"))) "]" (one-or-more space))) (defun piem--shorten-subject (subject) (let ((words (mapcar #'downcase (split-string (thread-last subject (replace-regexp-in-string (rx (any "'\"")) "") (replace-regexp-in-string piem-patch-subject-re "")) "\\W+" t))) (ignore-these (list "a" "an" "the")) (num-words 0) (num-chars 0) kept) (catch 'stop (dolist (word words) (when (not (member word ignore-these)) (cl-incf num-words) (cl-incf num-chars (length word)) (push word kept) (when (or (> num-words 5) (> num-chars 20)) (throw 'stop nil))))) (mapconcat #'identity (reverse kept) "-"))) (defun piem-name-branch-who-what-v (info) "Construct a branch name like \"km/b4-short-subj__v3\". In the above example, \"k\" and \"m\" are the first letters of the first and second \"words\" in the \"From:\" field. \"b4-short-subj\" is a stripped down, truncated variant of \"Subject:\". And \"v3\" is the version of the patch series, as indicated in the subject. INFO is a plist with properties documented in `piem-default-branch-function'." (when-let ((from (plist-get info :from)) (sender (let ((mail-extr-ignore-single-names nil) (mail-extr-ignore-realname-equals-mailbox-name nil)) (car (mail-extract-address-components from)))) (subject (plist-get info :subject))) (let* ((subnames (split-string sender)) (initials (mapconcat (lambda (subname) (and subname (downcase (substring subname nil 1)))) (list (car subnames) (cadr subnames)) "")) (version (and (string-match (rx "[" (zero-or-more (not (any "[" "\n"))) "PATCH " (zero-or-one (group "v" (one-or-more digit)))) subject) (match-string 1 subject)))) (concat initials "/" (piem--shorten-subject subject) (and version (concat "__" version)))))) (defvar piem-am-args (list "--scissors" "--3way")) (defun piem-am-read-worktree-sibling-named-by-branch (coderepo branch) "Read a worktree to create for applying patches. This function is intended to be used as a value of `piem-am-read-worktree-function'. The worktree directory is completed from the parent directory of CODEREPO. If BRANCH is non-nil, it is used to construct the default completion value." (let ((fname (directory-file-name coderepo))) (read-directory-name "Create worktree: " (file-name-directory fname) nil nil (and branch (concat (file-name-nondirectory fname) "-" (replace-regexp-in-string "/" "-" branch)))))) (defun piem-am--read-worktree (coderepo branch) (let ((dir (expand-file-name (funcall piem-am-read-worktree-function coderepo branch)))) (when (file-exists-p dir) (user-error "Worktree directory already exists")) dir)) ;;;###autoload (defun piem-am (mbox &optional format info coderepo toggle-worktree) "Feed an am-ready mbox to `git am'. MBOX is a buffer whose contents are an am-ready mbox (obtained via `piem-am-ready-mbox' when called interactively). FORMAT controls the value passed as the --patch-format option of `git am'. \"mbox\" and \"mboxrd\" are valid values, and \"mboxrd\" is the default. INFO is a plist that with information to help choose a default branch name or starting point (see `piem-default-branch-function' for a list of possible properties). CODEREPO, if given, indicates the code repository to operate within. If not specified, the default directory is used. When prefix argument TOGGLE-WORKTREE is non-nil, invert the meaning of `piem-am-create-worktree'. With the default value, this triggers the creation of a new worktree." (interactive (pcase-let ((`(,mbox . ,format) (or (piem-am-ready-mbox) (user-error "Could not find am-ready mbox for current buffer")))) ;; We're responsible for cleaning up the buffer created by ;; `piem-am-ready-mbox'; sneak in an indication to let the ;; downstream code know. (list (cons :interactive mbox) format (piem-extract-mbox-info mbox) (piem-inbox-coderepo-maybe-read) current-prefix-arg))) (setq format (or format "mboxrd")) (let* ((default-directory (or coderepo default-directory)) (am-directory default-directory) (use-worktree (xor piem-am-create-worktree toggle-worktree)) (interactivep (eq (car-safe mbox) :interactive))) (when interactivep (setq mbox (cdr mbox))) (let ((new-branch (let ((b (read-string "New branch (empty for detached): " (funcall piem-default-branch-function info)))) (and (not (string-empty-p b)) b))) (base (completing-read "Base commit: " (let ((cands (and piem-use-magit (fboundp 'magit-list-local-branch-names) (magit-list-local-branch-names))) (base (plist-get info :base-commit))) (if base (cons base cands) cands))))) (when use-worktree (setq am-directory (piem-am--read-worktree default-directory new-branch))) (apply #'piem-process-call nil piem-git-executable (append (if use-worktree (list "worktree" "add") (list "checkout")) (if new-branch (list "-b" new-branch) (list "--detach")) (and use-worktree (list am-directory)) (and (not (string-blank-p base)) (list base))))) (let ((args (cons (concat "--patch-format=" format) piem-am-args))) (if (bufferp mbox) (unwind-protect (apply #'piem-process-call-with-buffer-input am-directory mbox piem-git-executable "am" args) (when interactivep (kill-buffer mbox))) (apply #'piem-process-call am-directory piem-git-executable "am" (append args (list mbox))))) (if (and piem-use-magit (fboundp 'magit-status-setup-buffer)) (magit-status-setup-buffer am-directory) (dired am-directory)))) (defvar-local piem-edit-patch--coderepo nil) (defvar-local piem-edit-patch--format nil) (defun piem-edit () "Edit an am-ready mbox before feeding it to `git am'." (interactive) (pcase-let ((`(,mbox . ,format) (or (piem-am-ready-mbox "*piem-edit-patch*") (user-error "Could not find am-ready mbox for current buffer"))) (coderepo (piem-inbox-coderepo))) (pop-to-buffer mbox) (piem-edit-patch-mode) (setq piem-edit-patch--coderepo coderepo) (setq piem-edit-patch--format format))) (defun piem-edit-patch-am () "Apply the patch that is currently edited." (interactive) (let ((buf (current-buffer))) (piem-am buf piem-edit-patch--format (piem-extract-mbox-info (current-buffer)) piem-edit-patch--coderepo) (kill-buffer buf))) (defvar piem-edit-patch-mode-map (let ((map (make-sparse-keymap))) (define-key map (kbd "C-c C-c") #'piem-edit-patch-am) map) "Keymap for editing patches with piem.") (define-derived-mode piem-edit-patch-mode text-mode "piem-edit-patch" "Major mode for editing patches with piem." :group 'piem (buffer-enable-undo)) ;;;; Dispatch ;;;###autoload (autoload 'piem-dispatch "piem" nil t) (transient-define-prefix piem-dispatch () "Invoke a piem command." [[("a" "apply patch" piem-am) ("b" "call b4-am" piem-b4-am)] [("i" "inject thread into maildir" piem-inject-thread-into-maildir) ("l" "copy public-inbox link" piem-copy-mid-url)] [("s" "search with lei" piem-lei-q)]]) (defun piem-please () "How I wish I could intersect my emails, feeds, and repos") ;;; piem.el ends here (provide 'piem)