2022-04-01 09:55:31 +02:00
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;;; h.el --- Project navigation and remote checkout -*- lexical-binding: t -*-
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2022-04-04 17:31:26 +02:00
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;;; Copyright (C) 2022 Félix Baylac Jacqué
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;;; Author: Félix Baylac Jacqué <felix at alternativebit.fr>
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;;; Maintainer: Félix Baylac Jacqué <felix at alternativebit.fr>
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;;; Version: 1.14.0
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;;; Homepage: https://alternativebit.fr/TODO
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;;; Package-Requires: ((emacs "25.1"))
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2022-04-01 09:55:31 +02:00
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;;; License:
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2022-04-04 17:31:26 +02:00
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;;; This program is free software; you can redistribute it and/or modify
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;;; it under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation, either version 3 of the License, or
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;;; (at your option) any later version.
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2022-04-01 09:55:31 +02:00
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2022-04-04 17:31:26 +02:00
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;;; This program is distributed in the hope that it will be useful,
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;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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2022-04-01 09:55:31 +02:00
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2022-04-04 17:31:26 +02:00
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;;; You should have received a copy of the GNU General Public License
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;;; along with this program. If not, see <https://www.gnu.org/licenses/>
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2022-04-01 09:55:31 +02:00
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2022-04-04 17:31:26 +02:00
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;;;; Commentary:
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2022-04-01 09:55:31 +02:00
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2022-04-04 17:31:26 +02:00
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;;; TODO before publish
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2022-04-01 09:55:31 +02:00
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;;; Code:
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2022-04-04 17:28:27 +02:00
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(eval-when-compile (require 'subr-x))
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2022-04-01 20:04:09 +02:00
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(defgroup h-group nil
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"Variables used to setup the h.el code folder manager."
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:group 'Communication)
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(defcustom h-code-root nil
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"Root directory containing all your projects.
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2022-04-01 20:04:09 +02:00
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h.el organise the git repos you'll checkout in a tree fashion.
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All the code fetched using h.el will end up in this root directory. A
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tree of subdirectories will be created mirroring the remote URI.
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For instance, after checking out
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https://git.savannah.gnu.org/git/emacs/org-mode.git, the source code
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will live in the h-code-root/git.savannah.gnu.org/git/emacs/org-mode/
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local directory"
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:type 'directory
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:group 'h-group)
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2022-04-04 17:41:17 +02:00
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(defun h--safe-get-code-root ()
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"Ensure ‘h-code-root’ is correctly set, then canonalize the path.
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Errors out if ‘h-code-root’ has not been set yet."
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(progn (when (not h-code-root)
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(error "h-code-root has not been set. Please point it to your code root"))
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(file-name-as-directory h-code-root)))
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2022-04-02 11:56:24 +02:00
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(defcustom h-git-bin "git"
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"Path pointing to the git binary.
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By default, it'll look for git in the current $PATH."
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:type 'file
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:group 'h-group)
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(defun h--git-path ()
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"Find the git binary path using ‘h-git-bin’.
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Errors out if we can't find it."
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(if (file-executable-p h-git-bin)
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h-git-bin
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(let ((git-from-bin-path (locate-file h-git-bin exec-path)))
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(if (file-executable-p git-from-bin-path)
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git-from-bin-path
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(error "Can't find git. Is h-git-bin correctly set?")))))
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(defun h--call-git-in-dir (dir args)
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"Call the git binary as pointed by ‘h-git-bin’ in DIR with ARGS."
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(let ((default-directory dir))
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(process-file (h--git-path) nil nil nil args)))
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2022-04-01 20:04:09 +02:00
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(defun h--is-git-repo (dir)
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"Check if DIR is a git repo using a pretty weak heuristic."
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(file-directory-p (concat (file-name-as-directory dir) ".git")))
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(defun h--get-code-root-projects (code-root)
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"Retrieve the projects contained in the CODE-ROOT directory.
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We're going to make some hard assumptions about how the ‘h-code-root’
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directory should look like. First of all, if a directory seem to be a
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git repository, it'll automatically be considered as a project root.
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It means that after encountering a git repository, we won't recurse
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2022-04-03 17:48:10 +02:00
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any further.
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If the directory pointed by h-code-root does not exists yet, returns
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an empty list."
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(if (not (file-directory-p code-root))
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'()
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(let*
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((is-not-git-repo (lambda (dir) (not (h--is-git-repo dir))))
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(remove-code-root-prefix
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(lambda (path) (string-remove-prefix (concat (file-name-as-directory code-root)) path)))
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2022-04-04 17:31:26 +02:00
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;; PERF: Using directory-files-recursively is pretty
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;; inneficient. We have to list the dir content twice:
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;; 1. when directory-files-recursively checks.
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;; 2. when we filter the intermediate dirs from this list.
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(recursively-found-dirs
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(directory-files-recursively code-root "" t is-not-git-repo))
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(projects-absolute-path (seq-filter (lambda (e) (h--is-git-repo e)) recursively-found-dirs))
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(projects-relative-to-code-root
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(mapcar remove-code-root-prefix projects-absolute-path)))
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projects-relative-to-code-root)))
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2022-04-04 17:41:17 +02:00
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(defun h-jump-to-project ()
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"Open a project contained in the ‘h-code-root’ directory.
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If the project is not here yet, check it out from the available sources."
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(interactive)
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(let* ((selected-project-from-coderoot
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(completing-read
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"Available projects: "
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(h--get-code-root-projects (h--safe-get-code-root))
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nil t ""))
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(selected-project-absolute-path (concat (h--safe-get-code-root) selected-project-from-coderoot)))
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(if (file-directory-p selected-project-absolute-path)
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(find-file selected-project-absolute-path)
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(error "NOT IMPLEMENTED: cannot checkout a new project for now"))))
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(provide 'h)
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;;; h.el ends here
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