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project-root at emacswiki

Project-root is a simple project management tool for Emacs, which provides certain flexibility when defining projects. Instead of opening projects by path, you could just define remarkable files which are definitive for certain type of project. Example:

(setq project-roots
      `(("Django project"
         :root-contains-files ("")
         :filename-regex ,(regexify-ext-list '(py html css js sh))
         :exclude-paths '("contrib"))))

This declaration means that project-root will traverse directories starting from current to root searching for file And finding such will mean that you’re in a Django project.

This will allow you to use several predefined helper functions, usually bound like that:

(global-set-key (kbd "C-c p f") 'project-root-find-file)
(global-set-key (kbd "C-c p g") 'project-root-grep)
(global-set-key (kbd "C-c p a") 'project-root-ack)
(global-set-key (kbd "C-c p d") 'project-root-goto-root)
(global-set-key (kbd "C-c p l") 'project-root-browse-seen-projects)

find-file provides interface to opening files from project similar to ido-switch-buffer, grep/ack run appropriate program at project root, goto-root opens dired at project root, and browse-seen-projects opens buffer in org-mode with list of previously opened projects (it’s autosaved on opening new project and autoloaded when project-root is used first time after Emacs start).

There is a more generic macro: with-project-root, which allows you to wrap any command, setting default directory to project root. For example, to open a shell at current project root:

(global-set-key (kbd "C-c p s")
                (lambda () (interactive)
                      (ansi-term (getenv "SHELL")
                                 (concat (car project-details) "-shell")))