2 ;; David Kågedal <davidk@lysator.liu.se>
3 ;; Message-ID: <87iren2vqx.fsf@morpheus.local>
15 (push (concat "#" (car r) (car g) (car b)) colors)
21 (defvar git-blame-dark-colors
22 (color-scale '("00" "04" "08" "0c"
25 "30" "34" "38" "3c")))
27 (defvar git-blame-light-colors
28 (color-scale '("c0" "c4" "c8" "cc"
31 "f0" "f4" "f8" "fc")))
33 (defvar git-blame-ancient-color "dark green")
35 (defvar git-blame-overlays nil)
36 (defvar git-blame-cache nil)
38 (defvar git-blame-mode nil)
39 (make-variable-buffer-local 'git-blame-mode)
40 (push (list 'git-blame-mode " blame") minor-mode-alist)
42 (defun git-blame-mode (&optional arg)
45 (setq git-blame-mode (eq arg 1))
46 (setq git-blame-mode (not git-blame-mode)))
47 (make-local-variable 'git-blame-overlays)
48 (make-local-variable 'git-blame-colors)
49 (make-local-variable 'git-blame-cache)
50 (let ((bgmode (cdr (assoc 'background-mode (frame-parameters)))))
52 (setq git-blame-colors git-blame-dark-colors)
53 (setq git-blame-colors git-blame-light-colors)))
58 (defun git-blame-run ()
59 (let* ((display-buf (current-buffer))
60 (blame-buf (get-buffer-create
61 (concat " git blame for " (buffer-name))))
62 (proc (start-process "git-blame" blame-buf
63 "git" "blame" "--incremental"
64 (file-name-nondirectory buffer-file-name))))
65 (mapcar 'delete-overlay git-blame-overlays)
66 (setq git-blame-overlays nil)
67 (setq git-blame-cache (make-hash-table :test 'equal))
68 (with-current-buffer blame-buf
70 (make-local-variable 'git-blame-file)
71 (make-local-variable 'git-blame-current)
72 (setq git-blame-file display-buf)
73 (setq git-blame-current nil))
74 (set-process-filter proc 'git-blame-filter)
75 (set-process-sentinel proc 'git-blame-sentinel)))
77 (defun git-blame-cleanup ()
78 "Remove all blame properties"
79 (mapcar 'delete-overlay git-blame-overlays)
80 (setq git-blame-overlays nil)
81 (let ((modified (buffer-modified-p)))
82 (remove-text-properties (point-min) (point-max) '(point-entered nil))
83 (set-buffer-modified-p modified)))
85 (defun git-blame-sentinel (proc status)
86 ;;(kill-buffer (process-buffer proc))
87 (message "git blame finished"))
89 (defvar in-blame-filter nil)
91 (defun git-blame-filter (proc str)
93 (set-buffer (process-buffer proc))
94 (goto-char (process-mark proc))
95 (insert-before-markers str)
97 (unless in-blame-filter
101 (setq more (git-blame-parse)))))))
103 (defun git-blame-parse ()
104 (cond ((looking-at "\\([0-9a-f]\\{40\\}\\) \\([0-9]+\\) \\([0-9]+\\) \\([0-9]+\\)\n")
105 (let ((hash (match-string 1))
106 (src-line (string-to-number (match-string 2)))
107 (res-line (string-to-number (match-string 3)))
108 (num-lines (string-to-number (match-string 4))))
109 (setq git-blame-current
110 (git-blame-new-commit
111 hash src-line res-line num-lines)))
112 (delete-region (point) (match-end 0))
114 ((looking-at "filename \\(.+\\)\n")
115 (let ((filename (match-string 1)))
116 (git-blame-add-info "filename" filename))
117 (delete-region (point) (match-end 0))
119 ((looking-at "\\([a-z-]+\\) \\(.+\\)\n")
120 (let ((key (match-string 1))
121 (value (match-string 2)))
122 (git-blame-add-info key value))
123 (delete-region (point) (match-end 0))
125 ((looking-at "boundary\n")
126 (setq git-blame-current nil)
127 (delete-region (point) (match-end 0))
133 (defun git-blame-new-commit (hash src-line res-line num-lines)
135 (set-buffer git-blame-file)
136 (let ((info (gethash hash git-blame-cache))
137 (inhibit-point-motion-hooks t))
139 (let ((color (pop git-blame-colors)))
141 (setq color git-blame-ancient-color))
142 (setq info (list hash src-line res-line num-lines
143 (cons 'color color))))
144 (puthash hash info git-blame-cache))
146 (while (> num-lines 0)
147 (if (get-text-property (point) 'git-blame)
149 (let* ((start (point))
150 (end (progn (forward-line 1) (point)))
151 (ovl (make-overlay start end)))
152 (push ovl git-blame-overlays)
153 (overlay-put ovl 'git-blame info)
154 (overlay-put ovl 'help-echo hash)
155 (overlay-put ovl 'face (list :background
156 (cdr (assq 'color (cddddr info)))))
157 ;;(overlay-put ovl 'point-entered
158 ;; `(lambda (x y) (git-blame-identify ,hash)))
159 (let ((modified (buffer-modified-p)))
160 (put-text-property (if (= start 1) start (1- start)) (1- end)
162 `(lambda (x y) (git-blame-identify ,hash)))
163 (set-buffer-modified-p modified))))
164 (setq num-lines (1- num-lines))))))
166 (defun git-blame-add-info (key value)
167 (if git-blame-current
168 (nconc git-blame-current (list (cons (intern key) value)))))
170 (defun git-blame-current-commit ()
171 (let ((info (get-char-property (point) 'git-blame)))
174 (error "No commit info"))))
176 (defun git-blame-identify (&optional hash)
179 (format "git log -1 --pretty=oneline %s" (or hash
180 (git-blame-current-commit)))))