document: Inter snippet source text into the xapian index.

We store snippet source text in a slot of the <document> class thus
interring into the xapian index. This allows us to render search
snippets using only the xapian index without referring back to the git
repository.

* tissue/document.scm (<document>)[snippet-source-text]: New slot.
* tissue/document.scm (document-snippet-source-text): Delete method.
(document-html-snippet): Remove blank lines from snippet source text
before generating a snippet.
* tissue/commit.scm (document-snippet-source-text): Delete method.
(repository-commits): Initialize snippet-source-text.
* tissue/skribilo.scm (fragment-text): New function.
(document-fragment): Initialize snippet-source-text.
(document-text): Use fragment-text.
(document-snippet-source-text): Delete method.
* tissue/file-document.scm (file-text): New function.
(document-text): Use file-text.
(read-gemtext-document): Initialize snippet-source-text.
* tissue/issue.scm (read-gemtext-issue): Initialize
snippet-source-text.
* issues/skribilo-fragment-snippets-need-code-from-repo.gmi: Close
issue.

1 files changed, 13 insertions, 14 deletions

diff --git a/tissue/skribilo.scm b/tissue/skribilo.scm
index d0c90ba..b17b30d 100644
--- a/tissue/skribilo.scm
+++ b/tissue/skribilo.scm
@@ -47,6 +47,14 @@
               (call-with-input-file file
                 (cut evaluate-ast-from-port <> #:reader (make-reader reader-name)))))
 
+(define (fragment-text file identifier reader-name)
+  "Return the full text of skribilo fragment in @var{file} identified by
+@var{identifier} using reader named by @var{reader-name}."
+  (call-with-output-string
+    (cut ast->text
+         (document-node file identifier 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
@@ -58,7 +66,8 @@ by @var{identifier} in @var{file} read using reader named by
     #:path file
     #:commits (commits-affecting-file file)
     #:identifier identifier
-    #:reader-name reader-name))
+    #:reader-name reader-name
+    #:snippet-source-text (fragment-text file identifier reader-name)))
 
 (define-method (document-id-term (fragment <skribilo-fragment>))
   "Return the ID term for skribilo @var{fragment}."
@@ -89,16 +98,6 @@ output to @var{port}."
 
 (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))
-         <>)))
-
-;; We temporarily disable snippets for skribilo fragments until
-;; issues/skribilo-fragment-snippets-need-code-from-repo.gmi is fixed.
-(define-method (document-snippet-source-text (fragment <skribilo-fragment>))
-  "Return the source text for FRAGMENT from which to extract a search
-result snippet."
-  "")
+  (fragment-text (file-document-path fragment)
+                 (skribilo-fragment-identifier fragment)
+                 (skribilo-fragment-reader-name fragment)))