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authorBenjamin Barenblat <bbaren@mit.edu>2015-06-25 19:50:45 -0400
committerBenjamin Barenblat <bbaren@mit.edu>2015-06-25 19:50:45 -0400
commit19f42f400b88dd199685e3bd6960877f29eed407 (patch)
tree9a2c4fb72a4d5a35f54740a2c35d200924c4059d
Initial commit, including basic editing support
-rw-r--r--.gitignore13
-rw-r--r--LICENSE202
-rwxr-xr-xbuild16
-rw-r--r--main.ur97
-rw-r--r--main.urs14
-rw-r--r--urwiki.urp3
6 files changed, 345 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..33c244b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,13 @@
+# -*- conf -*-
+
+# Editor backup files
+*~
+\#*
+.\#*
+
+# Ur
+urwiki
+*.sql
+
+# SQLite
+*.sqlite3 \ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/build b/build
new file mode 100755
index 0000000..8be6a10
--- /dev/null
+++ b/build
@@ -0,0 +1,16 @@
+#!/bin/sh
+# Copyright 2015 the Massachusetts Institute of Technology
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+exec urweb -dbms sqlite -db "dbname=urwiki.sqlite3" -output urwiki urwiki
diff --git a/main.ur b/main.ur
new file mode 100644
index 0000000..6eb1562
--- /dev/null
+++ b/main.ur
@@ -0,0 +1,97 @@
+(* Copyright 2015 the Massachusetts Institute of Technology
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License. *)
+
+structure Configuration = struct
+ val main_page_name = "Main Page"
+ val wiki_title = "UrWiki demo"
+end
+
+type id = int
+
+table commit : { Id : id,
+ Created : time,
+ Content : string }
+ PRIMARY KEY Id
+sequence commit_id_next
+
+table article : { Title : string,
+ Head : id }
+ PRIMARY KEY Title,
+ CONSTRAINT Head
+ FOREIGN KEY Head REFERENCES commit(Id)
+
+fun commit_article title text : transaction unit =
+ id <- nextval commit_id_next;
+ creation_time <- now;
+ dml (INSERT INTO commit (Id, Created, Content)
+ VALUES ({[id]}, {[creation_time]}, {[text]}));
+ (* TODO(bbaren): This is ugly. Use CAS instead? *)
+ sql_error <- tryDml (INSERT INTO article (Title, Head)
+ VALUES ({[title]}, {[id]}));
+ case sql_error of
+ None =>
+ (* We created a new article. *)
+ return ()
+ | Some _ =>
+ (* The article already exists. *)
+ dml (UPDATE article
+ SET Head = {[id]}
+ WHERE Title = {[title]})
+
+fun wiki requested_article_title =
+ extant_articles <-
+ queryL (SELECT article.Title, commit.Content
+ FROM article LEFT JOIN commit ON article.Head = commit.Id
+ WHERE article.Title = {[requested_article_title]});
+ let
+ val article =
+ case extant_articles of
+ Nil => {Title = requested_article_title, Body = "Not found."}
+ | art :: Nil => {Title = art.Article.Title,
+ Body = show art.Commit.Content}
+ | _ :: _ :: _ => error
+ <xml>
+ Multiple articles with title
+ ‘{[requested_article_title]}’
+ </xml>
+ in
+ article_body_source <- source article.Body;
+ return
+ <xml>
+ <head>
+ <title>
+ {[if article.Title = Configuration.main_page_name
+ then Configuration.wiki_title
+ else article.Title ^ " – " ^ Configuration.wiki_title]}
+ </title>
+ </head>
+ <body>
+ <h1>{[Configuration.wiki_title]}</h1>
+ <ul>
+ <li>
+ <a link={wiki Configuration.main_page_name}>
+ {[Configuration.main_page_name]}
+ </a>
+ </li>
+ </ul>
+ <dyn signal={text <- signal article_body_source;
+ return <xml>{[text]}</xml>} /><br />
+ <ctextarea source={article_body_source} /><br />
+ <button
+ value="Commit"
+ onclick={fn _ =>
+ text <- get article_body_source;
+ rpc (commit_article article.Title text)} />
+ </body>
+ </xml>
+ end
diff --git a/main.urs b/main.urs
new file mode 100644
index 0000000..713845f
--- /dev/null
+++ b/main.urs
@@ -0,0 +1,14 @@
+(* Copyright 2015 the Massachusetts Institute of Technology
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed
+under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License. *)
+
+val wiki : string -> transaction page
diff --git a/urwiki.urp b/urwiki.urp
new file mode 100644
index 0000000..0c26327
--- /dev/null
+++ b/urwiki.urp
@@ -0,0 +1,3 @@
+sql initialize.sql
+
+main \ No newline at end of file