Hello,
Taking advice from Peter B I have implemented some changes to the
auto-uref script. It does not cache refdeses anymore, and allows
refdes reuse after deleting components from the schematic.
Another change allows to specify refdes numbering offset that is applied
automatically - for example:
Page contains R10, R121 and R33, offset set to 100.
Resistors will be numbered: R1, R2, R3...
Page contains R123, R223, R102, offset set to 100.
Resistors will be numbered: R101, R102, R103...
Script requires recent modifications to libgeda, so test with git HEAD.
Comments & ideas welcome.
--
Krzysztof Kościuszkiewicz
"Simplicity is the ultimate sophistication" -- Leonardo da Vinci
;; gEDA - GPL Electronic Design Automation
;; gschem - gEDA Schematic Capture
;; Copyright (C) 1998-2010 Ales Hvezda
;; Copyright (C) 1998-2010 gEDA Contributors (see ChangeLog for details)
;;
;; This program 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 2 of the License, or
;; (at your option) any later version.
;;
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
(use-modules (ice-9 regex) (srfi srfi-1))
(define auto-uref-page-offset 0)
;; Redefine value of page-offset.
;; Refdeses will be numbered from integer multiples of page-offset,
;; depending on the lowest refdes value found on the page.
;; If lowest value is 323 and page offset is 100, then next refdes
;; will be 301.
;; Setting to 0 disables the feature.
(define (auto-uref-set-page-offset new-offset)
(set! auto-uref-page-offset new-offset))
;; Modify attributes of an object to assign next unused refdes value
(define (auto-uref attribs)
; Return (prefix . number) on match or #f on failure
(define (split-value value)
(let ((match (string-match "^([A-Za-z]+)([0-9]+)$" value)))
(if match
(cons (match:substring match 1)
(string->number (match:substring match 2)))
#f)))
; Extract prefix from a refdes attribute value
(define (get-prefix value)
(let ((prefix (string-match "^[A-Za-z]+" value)))
(if (= 0 (match:end prefix))
#f
(match:substring prefix
; Filter non-inherited refdes values
(define (refdes-attrs attribs)
(filter (lambda (a)
(and
(not (attrib-inherited? a))
(string=? "refdes" (car (get-attribute-name-value a)
attribs))
; Extract numbers from refdeses that have given prefix
(define (extract-numbers object prefix)
(let* ((refdeses (refdes-attrs (get-object-attributes object)))
(vals (map (lambda (a)
(cdr (get-attribute-name-value a)))
refdeses))
(prefix-numbers (filter-map split-value vals))
(numbers (filter-map (lambda (n.v)
(if (string=? prefix (car n.v))
(cdr n.v)
#f))
prefix-numbers)))
numbers))
; Collect all numbers associated with prefix on current page
(define (collect-all-numbers prefix)
(let ((objects (get-objects-in-page (get-current-page
(concatenate (map (lambda (o)
(extract-numbers o prefix))
objects
; Return first number not present in used greater or equal to minimum
(define (find-first-unused used minimum)
(define (go n xs)
(cond ((null? xs) n)
((< n (car xs)) n)
((= n (car xs)) (go (1+ n) (cdr xs)))
(else (go n (cdr xs)
(go minimum used))
; Do the work - first check if attributes contain refdes with prefix
(let* ((refdeses (refdes-attrs attribs))
(refdes (if (null? refdeses)
#f
(car refdeses)))
(prefix (if refdes
(get-prefix (cdr (get-attribute-name-value refdes)))
#f)))
(if prefix
(let* ((used-nums (sort-list (collect-all-numbers prefix) <))
; minimum value considering the page-offset
(min-num (if (or
(null? used-nums)
(<= auto-uref-page-offset 0))
0
(* (floor (/ (car used-nums)
auto-uref-page-offset))
auto-uref-page-offset)))
; next refde
