| ;;; git-blame.el |
| ;; David Kågedal <davidk@lysator.liu.se> |
| ;; Message-ID: <87iren2vqx.fsf@morpheus.local> |
| |
| (require 'cl) |
| (defun color-scale (l) |
| (let* ((colors ()) |
| r g b) |
| (setq r l) |
| (while r |
| (setq g l) |
| (while g |
| (setq b l) |
| (while b |
| (push (concat "#" (car r) (car g) (car b)) colors) |
| (pop b)) |
| (pop g)) |
| (pop r)) |
| colors)) |
| |
| (defvar git-blame-dark-colors |
| (color-scale '("00" "04" "08" "0c" |
| "10" "14" "18" "1c" |
| "20" "24" "28" "2c" |
| "30" "34" "38" "3c"))) |
| |
| (defvar git-blame-light-colors |
| (color-scale '("c0" "c4" "c8" "cc" |
| "d0" "d4" "d8" "dc" |
| "e0" "e4" "e8" "ec" |
| "f0" "f4" "f8" "fc"))) |
| |
| (defvar git-blame-ancient-color "dark green") |
| |
| (defvar git-blame-overlays nil) |
| (defvar git-blame-cache nil) |
| |
| (defvar git-blame-mode nil) |
| (make-variable-buffer-local 'git-blame-mode) |
| (push (list 'git-blame-mode " blame") minor-mode-alist) |
| |
| (defun git-blame-mode (&optional arg) |
| (interactive "P") |
| (if arg |
| (setq git-blame-mode (eq arg 1)) |
| (setq git-blame-mode (not git-blame-mode))) |
| (make-local-variable 'git-blame-overlays) |
| (make-local-variable 'git-blame-colors) |
| (make-local-variable 'git-blame-cache) |
| (let ((bgmode (cdr (assoc 'background-mode (frame-parameters))))) |
| (if (eq bgmode 'dark) |
| (setq git-blame-colors git-blame-dark-colors) |
| (setq git-blame-colors git-blame-light-colors))) |
| (if git-blame-mode |
| (git-blame-run) |
| (git-blame-cleanup))) |
| |
| (defun git-blame-run () |
| (let* ((display-buf (current-buffer)) |
| (blame-buf (get-buffer-create |
| (concat " git blame for " (buffer-name)))) |
| (proc (start-process "git-blame" blame-buf |
| "git" "blame" "--incremental" |
| (file-name-nondirectory buffer-file-name)))) |
| (mapcar 'delete-overlay git-blame-overlays) |
| (setq git-blame-overlays nil) |
| (setq git-blame-cache (make-hash-table :test 'equal)) |
| (with-current-buffer blame-buf |
| (erase-buffer) |
| (make-local-variable 'git-blame-file) |
| (make-local-variable 'git-blame-current) |
| (setq git-blame-file display-buf) |
| (setq git-blame-current nil)) |
| (set-process-filter proc 'git-blame-filter) |
| (set-process-sentinel proc 'git-blame-sentinel))) |
| |
| (defun git-blame-cleanup () |
| "Remove all blame properties" |
| (mapcar 'delete-overlay git-blame-overlays) |
| (setq git-blame-overlays nil) |
| (let ((modified (buffer-modified-p))) |
| (remove-text-properties (point-min) (point-max) '(point-entered nil)) |
| (set-buffer-modified-p modified))) |
| |
| (defun git-blame-sentinel (proc status) |
| ;;(kill-buffer (process-buffer proc)) |
| (message "git blame finished")) |
| |
| (defvar in-blame-filter nil) |
| |
| (defun git-blame-filter (proc str) |
| (save-excursion |
| (set-buffer (process-buffer proc)) |
| (goto-char (process-mark proc)) |
| (insert-before-markers str) |
| (goto-char 0) |
| (unless in-blame-filter |
| (let ((more t) |
| (in-blame-filter t)) |
| (while more |
| (setq more (git-blame-parse))))))) |
| |
| (defun git-blame-parse () |
| (cond ((looking-at "\\([0-9a-f]\\{40\\}\\) \\([0-9]+\\) \\([0-9]+\\) \\([0-9]+\\)\n") |
| (let ((hash (match-string 1)) |
| (src-line (string-to-number (match-string 2))) |
| (res-line (string-to-number (match-string 3))) |
| (num-lines (string-to-number (match-string 4)))) |
| (setq git-blame-current |
| (git-blame-new-commit |
| hash src-line res-line num-lines))) |
| (delete-region (point) (match-end 0)) |
| t) |
| ((looking-at "filename \\(.+\\)\n") |
| (let ((filename (match-string 1))) |
| (git-blame-add-info "filename" filename)) |
| (delete-region (point) (match-end 0)) |
| t) |
| ((looking-at "\\([a-z-]+\\) \\(.+\\)\n") |
| (let ((key (match-string 1)) |
| (value (match-string 2))) |
| (git-blame-add-info key value)) |
| (delete-region (point) (match-end 0)) |
| t) |
| ((looking-at "boundary\n") |
| (setq git-blame-current nil) |
| (delete-region (point) (match-end 0)) |
| t) |
| (t |
| nil))) |
| |
| |
| (defun git-blame-new-commit (hash src-line res-line num-lines) |
| (save-excursion |
| (set-buffer git-blame-file) |
| (let ((info (gethash hash git-blame-cache)) |
| (inhibit-point-motion-hooks t)) |
| (when (not info) |
| (let ((color (pop git-blame-colors))) |
| (unless color |
| (setq color git-blame-ancient-color)) |
| (setq info (list hash src-line res-line num-lines |
| (cons 'color color)))) |
| (puthash hash info git-blame-cache)) |
| (goto-line res-line) |
| (while (> num-lines 0) |
| (if (get-text-property (point) 'git-blame) |
| (forward-line) |
| (let* ((start (point)) |
| (end (progn (forward-line 1) (point))) |
| (ovl (make-overlay start end))) |
| (push ovl git-blame-overlays) |
| (overlay-put ovl 'git-blame info) |
| (overlay-put ovl 'help-echo hash) |
| (overlay-put ovl 'face (list :background |
| (cdr (assq 'color (cddddr info))))) |
| ;;(overlay-put ovl 'point-entered |
| ;; `(lambda (x y) (git-blame-identify ,hash))) |
| (let ((modified (buffer-modified-p))) |
| (put-text-property (if (= start 1) start (1- start)) (1- end) |
| 'point-entered |
| `(lambda (x y) (git-blame-identify ,hash))) |
| (set-buffer-modified-p modified)))) |
| (setq num-lines (1- num-lines)))))) |
| |
| (defun git-blame-add-info (key value) |
| (if git-blame-current |
| (nconc git-blame-current (list (cons (intern key) value))))) |
| |
| (defun git-blame-current-commit () |
| (let ((info (get-char-property (point) 'git-blame))) |
| (if info |
| (car info) |
| (error "No commit info")))) |
| |
| (defun git-blame-identify (&optional hash) |
| (interactive) |
| (shell-command |
| (format "git log -1 --pretty=oneline %s" (or hash |
| (git-blame-current-commit))))) |