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;; -*- coding: utf-8; -*-
;; gitto -- Keep track of your git repositories
;; Copyright (C) 2012 Tom Willemse <tom at ryuslash dot org>
;; This file is part of gitto.
;; gitto is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; gitto is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with gitto. If not, see <http://www.gnu.org/licenses/>.
(define-module (gitto config)
#:use-module (ice-9 format)
#:use-module (ice-9 rdelim)
#:export (global-config
hook-alist
install-hooks
merge-config
read-config
write-config))
(define global-config '())
(define hook-alist '())
(define (install-hooks repo-location)
(for-each
(lambda (hook)
(let ((new-name (string-append repo-location "/.git/hooks/"
(car hook))))
(unless (file-exists? new-name)
(symlink (cdr hook) new-name))))
hook-alist))
(define (merge-config repo-name x y)
(let ((lst (if x (list-copy x) '())))
(for-each
(lambda (s)
(let ((b-sec (assoc (car s) lst)))
(set! lst (assoc-set!
lst (car s) (merge-settings
repo-name (if b-sec (cdr b-sec) #f) (cdr s))))))
y)
lst))
(define (merge-setting repo-name lst var val)
(if (list? val)
(assoc-set! lst var (map (lambda (v) (format #f v repo-name)) val))
(assoc-set! lst var (format #f val repo-name))))
(define (merge-settings repo-name x y)
(let ((lst (if x (list-copy x) '())))
(for-each
(lambda (v)
(set! lst (merge-setting repo-name lst (car v) (cdr v))))
y)
lst))
(define (split-setting line)
(let ((idx (string-index line #\=)))
(cons (string-trim-both (substring line 0 idx))
(string-trim-both (substring line (1+ idx))))))
(define (read-setting settings line)
(let* ((new-setting (split-setting line))
(var (car new-setting)) (val (cdr new-setting))
(current-value (assoc-ref settings var)))
(if current-value
(if (list? current-value)
(assoc-set! settings var (append current-value (list val)))
(assoc-set! settings var (list current-value val)))
(assoc-set! settings var val))))
(define (read-config repo-location)
(let ((port (open-input-file
(string-append repo-location "/.git/config")))
(config '())
(current-section #f))
(do ((line (read-line port) (read-line port)))
((eof-object? line))
(cond ((string= line "[" 0 1)
(let ((section (cons (string-trim-both
line (char-set #\[ #\])) '())))
(set! config (append config (list section)))
(set! current-section section)))
((string-contains line "=")
(set-cdr! current-section
(read-setting (cdr current-section) line)))))
(close-port port)
config))
(define* (write-config config #:optional (file #f))
(let ((thunk (lambda () (for-each write-section config))))
(if file
(with-output-to-file file thunk)
(thunk))))
(define (write-section section)
(format #t "[~a]~%" (car section))
(for-each write-setting (cdr section)))
(define (write-setting setting)
(let ((value (cdr setting)))
(if (list? value)
(map (lambda (v)
(format #t "~8t~a = ~a~%" (car setting) v)) value)
(format #t "~8t~a = ~a~%" (car setting) (cdr setting)))))
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