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Diffstat (limited to 'src/common/sui.scm')
| -rw-r--r-- | src/common/sui.scm | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/common/sui.scm b/src/common/sui.scm new file mode 100644 index 0000000..eb6134b --- /dev/null +++ b/src/common/sui.scm @@ -0,0 +1,166 @@ +;*=====================================================================*/ +;* serrano/prgm/project/skribe/src/common/sui.scm */ +;* ------------------------------------------------------------- */ +;* Author : Manuel Serrano */ +;* Creation : Wed Dec 31 11:44:33 2003 */ +;* Last change : Tue Feb 17 11:35:32 2004 (serrano) */ +;* Copyright : 2003-04 Manuel Serrano */ +;* ------------------------------------------------------------- */ +;* Skribe Url Indexes */ +;* ------------------------------------------------------------- */ +;* Implementation: @label lib@ */ +;* bigloo: @path ../bigloo/sui.bgl@ */ +;*=====================================================================*/ + +;*---------------------------------------------------------------------*/ +;* *sui-table* ... */ +;*---------------------------------------------------------------------*/ +(define *sui-table* (make-hashtable)) + +;*---------------------------------------------------------------------*/ +;* load-sui ... */ +;* ------------------------------------------------------------- */ +;* Returns a SUI sexp if already loaded. Load it otherwise. */ +;* Raise an error if the file cannot be open. */ +;*---------------------------------------------------------------------*/ +(define (load-sui path) + (let ((sexp (hashtable-get *sui-table* path))) + (or sexp + (begin + (when (> *skribe-verbose* 0) + (fprintf (current-error-port) " [loading sui: ~a]\n" path)) + (let ((p (open-input-file path))) + (if (not (input-port? p)) + (skribe-error 'load-sui + "Can't find `Skribe Url Index' file" + path) + (unwind-protect + (let ((sexp (read p))) + (match-case sexp + ((sui (? string?) . ?-) + (hashtable-put! *sui-table* path sexp)) + (else + (skribe-error 'load-sui + "Illegal `Skribe Url Index' file" + path))) + sexp) + (close-input-port p)))))))) + +;*---------------------------------------------------------------------*/ +;* sui-ref->url ... */ +;*---------------------------------------------------------------------*/ +(define (sui-ref->url dir sui ident opts) + (let ((refs (sui-find-ref sui ident opts))) + (and (pair? refs) + (let ((base (sui-file sui)) + (file (car (car refs))) + (mark (cdr (car refs)))) + (format "~a/~a#~a" dir (or file base) mark))))) + +;*---------------------------------------------------------------------*/ +;* sui-title ... */ +;*---------------------------------------------------------------------*/ +(define (sui-title sexp) + (match-case sexp + ((sui (and ?title (? string?)) . ?-) + title) + (else + (skribe-error 'sui-title "Illegal `sui' format" sexp)))) + +;*---------------------------------------------------------------------*/ +;* sui-file ... */ +;*---------------------------------------------------------------------*/ +(define (sui-file sexp) + (sui-key sexp :file)) + +;*---------------------------------------------------------------------*/ +;* sui-key ... */ +;*---------------------------------------------------------------------*/ +(define (sui-key sexp key) + (match-case sexp + ((sui ?- . ?rest) + (let loop ((rest rest)) + (and (pair? rest) + (if (eq? (car rest) key) + (and (pair? (cdr rest)) + (cadr rest)) + (loop (cdr rest)))))) + (else + (skribe-error 'sui-key "Illegal `sui' format" sexp)))) + +;*---------------------------------------------------------------------*/ +;* sui-find-ref ... */ +;*---------------------------------------------------------------------*/ +(define (sui-find-ref sui ident opts) + (let ((ident (assq :ident opts)) + (mark (assq :mark opts)) + (class (let ((c (assq :class opts))) + (and (pair? c) (cadr c)))) + (chapter (assq :chapter opts)) + (section (assq :section opts)) + (subsection (assq :subsection opts)) + (subsubsection (assq :subsubsection opts))) + (match-case sui + ((sui (? string?) . ?refs) + (cond + (mark (sui-search-ref 'marks refs (cadr mark) class)) + (chapter (sui-search-ref 'chapters refs (cadr chapter) class)) + (section (sui-search-ref 'sections refs (cadr section) class)) + (subsection (sui-search-ref 'subsections refs (cadr subsection) class)) + (subsubsection (sui-search-ref 'subsubsections refs (cadr subsubsection) class)) + (ident (sui-search-all-refs sui ident class)) + (else '()))) + (else + (skribe-error 'sui-find-ref "Illegal `sui' format" sui))))) + +;*---------------------------------------------------------------------*/ +;* sui-search-all-refs ... */ +;*---------------------------------------------------------------------*/ +(define (sui-search-all-refs sui id refs) + '()) + +;*---------------------------------------------------------------------*/ +;* sui-search-ref ... */ +;*---------------------------------------------------------------------*/ +(define (sui-search-ref kind refs val class) + (define (find-ref refs val class) + (map (lambda (r) + (let ((f (memq :file r)) + (c (memq :mark r))) + (cons (and (pair? f) (cadr f)) (and (pair? c) (cadr c))))) + (filter (if class + (lambda (m) + (and (pair? m) + (string? (car m)) + (string=? (car m) val) + (let ((c (memq :class m))) + (and (pair? c) + (eq? (cadr c) class))))) + (lambda (m) + (and (pair? m) + (string? (car m)) + (string=? (car m) val)))) + refs))) + (let loop ((refs refs)) + (if (pair? refs) + (if (and (pair? (car refs)) (eq? (caar refs) kind)) + (find-ref (cdar refs) val class) + (loop (cdr refs))) + '()))) + +;*---------------------------------------------------------------------*/ +;* sui-filter ... */ +;*---------------------------------------------------------------------*/ +(define (sui-filter sui pred1 pred2) + (match-case sui + ((sui (? string?) . ?refs) + (let loop ((refs refs) + (res '())) + (if (pair? refs) + (if (and (pred1 (car refs))) + (loop (cdr refs) + (cons (filter pred2 (cdar refs)) res)) + (loop (cdr refs) res)) + (reverse! res)))) + (else + (skribe-error 'sui-filter "Illegal `sui' format" sui)))) |