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| ;;;; (texinfo indexing) -- indexing stexinfo | |
| ;;;; | |
| ;;;; Copyright (C) 2009, 2010 Free Software Foundation, Inc. | |
| ;;;; Copyright (C) 2003,2004,2009 Andy Wingo <wingo at pobox dot com> | |
| ;;;; | |
| ;;;; This library 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 of the License, or (at your option) any later version. | |
| ;;;; | |
| ;;;; This library 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 library; if not, write to the Free Software | |
| ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| ;;;; | |
| ;;; Commentary: | |
| ;; | |
| ;;@c texinfo formatting | |
| ;;Given a piece of stexi, return an index of a specified variety. | |
| ;; | |
| ;;Note that currently, @code{stexi-extract-index} doesn't differentiate | |
| ;;between different kinds of index entries. That's a bug ;) | |
| ;;; Code: | |
| (define-module (texinfo indexing) | |
| #:use-module (sxml simple) | |
| #:use-module (srfi srfi-13) | |
| #:export (stexi-extract-index)) | |
| (define defines | |
| '(deftp defcv defivar deftypeivar defop deftypeop defmethod | |
| deftypemethod defopt defvr defvar deftypevr deftypevar deffn | |
| deftypefn defspec defmac defun deftypefun)) | |
| (define indices | |
| '(cindex findex vindex kindex pindex tindex)) | |
| (define (stexi-extract-index tree manual-name kind) | |
| "Given an stexi tree @var{tree}, index all of the entries of type | |
| @var{kind}. @var{kind} can be one of the predefined texinfo indices | |
| (@code{concept}, @code{variable}, @code{function}, @code{key}, | |
| @code{program}, @code{type}) or one of the special symbols @code{auto} | |
| or @code{all}. @code{auto} will scan the stext for a @code{(printindex)} | |
| statement, and @code{all} will generate an index from all entries, | |
| regardless of type. | |
| The returned index is a list of pairs, the @sc{car} of which is the | |
| entry (a string) and the @sc{cdr} of which is a node name (a string)." | |
| (let loop ((in tree) (entries '())) | |
| (cond | |
| ((null? in) | |
| entries) | |
| ((pair? (car in)) | |
| (cond | |
| ((and (pair? (cdr in)) (pair? (cadr in)) | |
| (eq? (caar in) 'anchor) (memq (caadr in) defines)) | |
| (loop (cddr in) (acons (cadr (assq 'name (cdr (cadadr in)))) | |
| (cadr (assq 'name (cdadar in))) | |
| entries))) | |
| ((and (pair? (cdr in)) (pair? (cadr in)) | |
| (eq? (caar in) 'anchor) (memq (caadr in) indices)) | |
| (loop (cddr in) (acons (sxml->string (cadr in)) | |
| (cadr (assq 'name (cdadar in))) | |
| entries))) | |
| (else | |
| (loop (cdr in) (loop (car in) entries))))) | |
| (else | |
| (loop (cdr in) entries))))) | |
| ;;; arch-tag: 216d29d3-1ed9-433f-9c19-0dc4d6b439b6 | |