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-rw-r--r--tissue/skribilo.scm97
1 files changed, 97 insertions, 0 deletions
diff --git a/tissue/skribilo.scm b/tissue/skribilo.scm
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+;;; tissue --- Text based issue tracker
+;;; Copyright © 2023 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of tissue.
+;;;
+;;; tissue 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.
+;;;
+;;; tissue 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 tissue. If not, see <https://www.gnu.org/licenses/>.
+
+(define-module (tissue skribilo)
+ #:use-module (rnrs conditions)
+ #:use-module (rnrs exceptions)
+ #:use-module (srfi srfi-26)
+ #:use-module (ice-9 match)
+ #:use-module (oop goops)
+ #:use-module (skribilo ast)
+ #:use-module (skribilo evaluator)
+ #:use-module (skribilo reader)
+ #:use-module (tissue document)
+ #:use-module (tissue file-document)
+ #:use-module (tissue utils)
+ #:export (<skribilo-fragment>
+ skribilo-fragment-filename
+ skribilo-fragment-identifier
+ document-fragment))
+
+(define-class <skribilo-fragment> (<file-document>)
+ (identifier #:getter skribilo-fragment-identifier #:init-keyword #:identifier)
+ (reader-name #:getter skribilo-fragment-reader-name #:init-keyword #:reader-name))
+
+(define (document-node file identifier reader-name)
+ "Return @code{<markup>} object describing node identified by
+@var{identifier} in @var{file} read using reader named by
+@var{reader-name}."
+ (find1-down (lambda (node)
+ (and (is-a? node <markup>)
+ (string=? (markup-ident node) identifier)))
+ (call-with-input-file file
+ (cut evaluate-ast-from-port <> #:reader (make-reader reader-name)))))
+
+(define* (document-fragment file identifier #:key (reader-name 'skribe))
+ "Return a @code{<skribilo-fragment>} object describing node identified
+by @var{identifier} in @var{file} read using reader named by
+@var{reader-name}."
+ (make <skribilo-fragment>
+ #:title (ast->string
+ (markup-option (document-node file identifier reader-name)
+ #:title))
+ #:path file
+ #:commits (commits-affecting-file file)
+ #:identifier identifier
+ #:reader-name reader-name))
+
+(define-method (document-id-term (fragment <skribilo-fragment>))
+ "Return the ID term for skribilo @var{fragment}."
+ (string-append "Qskribilofragment."
+ (file-document-path fragment)
+ "#"
+ (skribilo-fragment-identifier fragment)))
+
+(define (ast->text node port)
+ "Serialize AST @var{node} into text suitable for indexing. Write
+output to @var{port}."
+ (cond
+ ((is-a? node <node>)
+ (for-each (match-lambda
+ ((_ . value)
+ (display (ast->string value) port)))
+ (node-options node))
+ (newline port)
+ (ast->text (node-body node) port))
+ ((string? node)
+ (display node port))
+ ((number? node)
+ (display (number->string node) port))
+ ((list? node)
+ (for-each (lambda (element)
+ (ast->text element port) port)
+ node))))
+
+(define-method (document-text (fragment <skribilo-fragment>))
+ "Return the full text of skribilo @var{fragment}."
+ (call-with-output-string
+ (cut ast->text
+ (document-node (file-document-path fragment)
+ (skribilo-fragment-identifier fragment)
+ (skribilo-fragment-reader-name fragment))
+ <>)))