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