machine_setup/ansible/roles/emacs/files/elisp/base-functions.el

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;; ========== Function to reload current file =================
(defun reload-file ()
"Revert buffer without confirmation."
(interactive)
(revert-buffer :ignore-auto :noconfirm))
;; ===========================================================
;; ============= Run commands ================================
(defun run-command-on-buffer (cmd &rest args)
"Run a command using the current buffer as stdin and replacing its contents if the command succeeds with the stdout from the command. This is useful for code formatters."
(let (
(stdout-buffer (generate-new-buffer "tmp-stdout" t))
(full-cmd (append '(call-process-region nil nil cmd nil stdout-buffer nil) args))
)
(unwind-protect
(let ((exit-status (eval full-cmd)))
(if (eq exit-status 0)
(save-excursion
(replace-buffer-contents stdout-buffer)
)
(message "FAILED running command on buffer %s" (append (list cmd) args))
)
)
(kill-buffer stdout-buffer)
)
)
)
(defun run-command-in-directory (dir cmd &rest args)
"Run a command in the specified directory. If the directory is nil, the directory of the file is used. The stdout result is trimmed of whitespace and returned."
(let (
(default-directory (or dir default-directory))
(stdout-buffer (generate-new-buffer "tmp-stdout" t))
(full-cmd (append '(call-process cmd nil (list stdout-buffer nil) nil) args))
)
(unwind-protect
(let ((exit-status (condition-case nil (eval full-cmd) (file-missing nil))))
(if (eq exit-status 0)
(progn
(with-current-buffer stdout-buffer
(string-trim (buffer-string))
)
)
)
)
(kill-buffer stdout-buffer)
)
)
)
(defun load-directory (dir)
(let ((load-it (lambda (f)
(load-file (concat (file-name-as-directory dir) f)))
))
(mapc load-it (directory-files dir nil "\\.el$"))))
(defun generate-vc-link ()
(interactive)
(or
(generate-github-link)
(generate-source-hut-link)
)
)
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(defun generate-github-link ()
"Generate a permalink to the current line."
(interactive)
(let (
(current-rev (vc-working-revision buffer-file-name))
(line-number (line-number-at-pos))
(repository-url (vc-git-repository-url buffer-file-name))
(relative-path (file-relative-name buffer-file-name (vc-root-dir)))
)
(save-match-data
(and (string-match "\\(git@github\.com:\\|https://github\.com/\\)\\([^/]+\\)/\\([^.]+\\).git" repository-url)
(let* (
(gh-org (match-string 2 repository-url))
(gh-repo (match-string 3 repository-url))
(full-url (format "https://github.com/%s/%s/blob/%s/%s?plain=1#L%s" gh-org gh-repo current-rev relative-path line-number))
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)
(message "%s" full-url)
(kill-new full-url)
t
)
)
)
)
)
(defun generate-source-hut-link ()
"Generate a permalink to the current line."
(interactive)
(let (
(current-rev (vc-working-revision buffer-file-name))
(line-number (line-number-at-pos))
(repository-url (vc-git-repository-url buffer-file-name))
(relative-path (file-relative-name buffer-file-name (vc-root-dir)))
)
(message "Using repo url %s" repository-url)
(save-match-data
(and (string-match "https://git.sr.ht/\\([^/]+\\)/\\([^/]+\\)" repository-url)
(let* (
(sh-org (match-string 1 repository-url))
(sh-repo (match-string 2 repository-url))
(full-url (format "https://git.sr.ht/%s/%s/tree/%s/%s#L%s" sh-org sh-repo current-rev relative-path line-number))
)
(message "%s" full-url)
(kill-new full-url)
t
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)
)
)
)
)
(defmacro when-linux (&rest body)
"Execute only when on Linux."
(declare (indent defun))
`(when (eq system-type 'gnu/linux) ,@body))
(defmacro when-freebsd (&rest body)
"Execute only when on FreeBSD."
(declare (indent defun))
`(when (eq system-type 'berkeley-unix) ,@body))
(provide 'base-functions)