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Diffstat (limited to 'module/scripts/api-diff.scm')
| -rw-r--r-- | module/scripts/api-diff.scm | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/module/scripts/api-diff.scm b/module/scripts/api-diff.scm new file mode 100644 index 000000000..b842b03ff --- /dev/null +++ b/module/scripts/api-diff.scm @@ -0,0 +1,176 @@ +;;; api-diff --- diff guile-api.alist files + +;; Copyright (C) 2002, 2006 Free Software Foundation, Inc. +;; +;; This program is free software; you can redistribute it and/or +;; modify it under the terms of the GNU Lesser General Public License +;; as published by the Free Software Foundation; either version 3, 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 +;; Lesser General Public License for more details. +;; +;; You should have received a copy of the GNU Lesser General Public +;; License along with this software; see the file COPYING.LESSER. If +;; not, write to the Free Software Foundation, Inc., 51 Franklin +;; Street, Fifth Floor, Boston, MA 02110-1301 USA + +;;; Author: Thien-Thi Nguyen <ttn@gnu.org> + +;;; Commentary: + +;; Usage: api-diff [-d GROUPS] ALIST-FILE-A ALIST-FILE-B +;; +;; Read in the alists from files ALIST-FILE-A and ALIST-FILE-B +;; and display a (count) summary of the groups defined therein. +;; Optional arg "--details" (or "-d") specifies a comma-separated +;; list of groups, in which case api-diff displays instead the +;; elements added and deleted for each of the specified groups. +;; +;; For scheme programming, this module exports the proc: +;; (api-diff A-file B-file) +;; +;; Note that the convention is that the "older" alist/file is +;; specified first. +;; +;; TODO: Develop scheme interface. + +;;; Code: + +(define-module (scripts api-diff) + :use-module (ice-9 common-list) + :use-module (ice-9 format) + :use-module (ice-9 getopt-long) + :autoload (srfi srfi-13) (string-tokenize) + :export (api-diff)) + +(define (read-alist-file file) + (with-input-from-file file + (lambda () (read)))) + +(define put set-object-property!) +(define get object-property) + +(define (read-api-alist-file file) + (let* ((alist (read-alist-file file)) + (meta (assq-ref alist 'meta)) + (interface (assq-ref alist 'interface))) + (put interface 'meta meta) + (put interface 'groups (let ((ht (make-hash-table 31))) + (for-each (lambda (group) + (hashq-set! ht group '())) + (assq-ref meta 'groups)) + ht)) + interface)) + +(define (hang-by-the-roots interface) + (let ((ht (get interface 'groups))) + (for-each (lambda (x) + (for-each (lambda (group) + (hashq-set! ht group + (cons (car x) + (hashq-ref ht group)))) + (assq-ref x 'groups))) + interface)) + interface) + +(define (diff? a b) + (let ((result (set-difference a b))) + (if (null? result) + #f ; CL weenies bite me + result))) + +(define (diff+note! a b note-removals note-additions note-same) + (let ((same? #t)) + (cond ((diff? a b) => (lambda (x) (note-removals x) (set! same? #f)))) + (cond ((diff? b a) => (lambda (x) (note-additions x) (set! same? #f)))) + (and same? (note-same)))) + +(define (group-diff i-old i-new . options) + (let* ((i-old (hang-by-the-roots i-old)) + (g-old (hash-fold acons '() (get i-old 'groups))) + (g-old-names (map car g-old)) + (i-new (hang-by-the-roots i-new)) + (g-new (hash-fold acons '() (get i-new 'groups))) + (g-new-names (map car g-new))) + (cond ((null? options) + (diff+note! g-old-names g-new-names + (lambda (removals) + (format #t "groups-removed: ~A\n" removals)) + (lambda (additions) + (format #t "groups-added: ~A\n" additions)) + (lambda () #t)) + (for-each (lambda (group) + (let* ((old (assq-ref g-old group)) + (new (assq-ref g-new group)) + (old-count (and old (length old))) + (new-count (and new (length new))) + (delta (and old new (- new-count old-count)))) + (format #t " ~5@A ~5@A : " + (or old-count "-") + (or new-count "-")) + (cond ((and old new) + (let ((add-count 0) (sub-count 0)) + (diff+note! + old new + (lambda (subs) + (set! sub-count (length subs))) + (lambda (adds) + (set! add-count (length adds))) + (lambda () #t)) + (format #t "~5@D ~5@D : ~5@D" + add-count (- sub-count) delta))) + (else + (format #t "~5@A ~5@A : ~5@A" "-" "-" "-"))) + (format #t " ~A\n" group))) + (sort (union g-old-names g-new-names) + (lambda (a b) + (string<? (symbol->string a) + (symbol->string b)))))) + ((assq-ref options 'details) + => (lambda (groups) + (for-each (lambda (group) + (let* ((old (or (assq-ref g-old group) '())) + (new (or (assq-ref g-new group) '())) + (>>! (lambda (label ls) + (format #t "~A ~A:\n" group label) + (for-each (lambda (x) + (format #t " ~A\n" x)) + ls)))) + (diff+note! old new + (lambda (removals) + (>>! 'removals removals)) + (lambda (additions) + (>>! 'additions additions)) + (lambda () + (format #t "~A: no changes\n" + group))))) + groups))) + (else + (error "api-diff: group-diff: bad options"))))) + +(define (api-diff . args) + (let* ((p (getopt-long (cons 'api-diff args) + '((details (single-char #\d) + (value #t)) + ;; Add options here. + ))) + (rest (option-ref p '() '("/dev/null" "/dev/null"))) + (i-old (read-api-alist-file (car rest))) + (i-new (read-api-alist-file (cadr rest))) + (options '())) + (cond ((option-ref p 'details #f) + => (lambda (groups) + (set! options (cons (cons 'details + (map string->symbol + (string-tokenize + groups + #\,))) + options))))) + (apply group-diff i-old i-new options))) + +(define main api-diff) + +;;; api-diff ends here |