feat: add example scripts for argparse, bytes, dataset, html, markdown, uuid, wdantic, and web chat modules

Add comprehensive demo scripts showcasing the usage of multiple Wren modules including argument parsing, byte manipulation, in-memory dataset operations, HTML encoding/slugification, markdown-to-HTML conversion, UUID generation/validation, schema validation with wdantic, and a full web chat application with REST endpoints.
2026-01-24 22:40:22 +00:00
parent 0a65272f80
commit 5a4054ec66
105 changed files with 23275 additions and 94 deletions
@@ -0,0 +1,12 @@
+// retoor <retoor@molodetz.nl>
+
+import "argparse" for ArgumentParser
+
+var parser = ArgumentParser.new()
+parser.addArgument("-i", {"long": "--include", "action": "append"})
+
+var args = parser.parseArgs(["-i", "foo", "-i", "bar", "--include", "baz"])
+System.print(args["include"].count) // expect: 3
+System.print(args["include"][0]) // expect: foo
+System.print(args["include"][1]) // expect: bar
+System.print(args["include"][2]) // expect: baz
@@ -0,0 +1,15 @@
+// retoor <retoor@molodetz.nl>
+
+import "argparse" for ArgumentParser
+
+var parser = ArgumentParser.new()
+parser.addArgument("-v", {"action": "count"})
+
+var args = parser.parseArgs([])
+System.print(args["v"]) // expect: 0
+
+var args2 = parser.parseArgs(["-v"])
+System.print(args2["v"]) // expect: 1
+
+var args3 = parser.parseArgs(["-v", "-v", "-v"])
+System.print(args3["v"]) // expect: 3
@@ -0,0 +1,17 @@
+// retoor <retoor@molodetz.nl>
+
+import "argparse" for ArgumentParser
+
+var parser = ArgumentParser.new()
+parser.addArgument("-v", {"long": "--verbose", "action": "storeTrue"})
+parser.addArgument("-q", {"action": "storeFalse", "dest": "verbose_output"})
+
+var args = parser.parseArgs([])
+System.print(args["verbose"]) // expect: false
+System.print(args["verbose_output"]) // expect: true
+
+var args2 = parser.parseArgs(["-v"])
+System.print(args2["verbose"]) // expect: true
+
+var args3 = parser.parseArgs(["-q"])
+System.print(args3["verbose_output"]) // expect: false
@@ -0,0 +1,18 @@
+// retoor <retoor@molodetz.nl>
+
+import "argparse" for ArgumentParser
+
+var parser = ArgumentParser.new()
+parser.addArgument("-o", {"long": "--output", "default": "out.txt"})
+parser.addArgument("-n", {"type": "int", "default": 1})
+
+var args = parser.parseArgs([])
+System.print(args["output"]) // expect: out.txt
+System.print(args["n"]) // expect: 1
+
+var args2 = parser.parseArgs(["-o", "result.txt", "-n", "5"])
+System.print(args2["output"]) // expect: result.txt
+System.print(args2["n"]) // expect: 5
+
+var args3 = parser.parseArgs(["--output", "final.txt"])
+System.print(args3["output"]) // expect: final.txt
@@ -0,0 +1,15 @@
+// retoor <retoor@molodetz.nl>
+
+import "argparse" for ArgumentParser
+
+var parser = ArgumentParser.new()
+parser.addArgument("filename")
+parser.addArgument("output", {"required": false, "default": "out.txt"})
+
+var args = parser.parseArgs(["input.txt"])
+System.print(args["filename"]) // expect: input.txt
+System.print(args["output"]) // expect: out.txt
+
+var args2 = parser.parseArgs(["input.txt", "result.txt"])
+System.print(args2["filename"]) // expect: input.txt
+System.print(args2["output"]) // expect: result.txt
@@ -0,0 +1,31 @@
+// retoor <retoor@molodetz.nl>
+
+import "bytes" for Bytes
+
+System.print(Bytes.length("Hello")) // expect: 5
+System.print(Bytes.length("")) // expect: 0
+
+System.print(Bytes.toList("AB")) // expect: [65, 66]
+System.print(Bytes.toList("")) // expect: []
+
+System.print(Bytes.fromList([65, 66, 67])) // expect: ABC
+System.print(Bytes.fromList([])) // expect:
+
+System.print(Bytes.concat("Hello", " World")) // expect: Hello World
+System.print(Bytes.concat("", "Test")) // expect: Test
+System.print(Bytes.concat("Test", "")) // expect: Test
+
+System.print(Bytes.slice("Hello", 0, 2)) // expect: He
+System.print(Bytes.slice("Hello", 2, 5)) // expect: llo
+System.print(Bytes.slice("Hello", 0, 100)) // expect: Hello
+System.print(Bytes.length(Bytes.slice("Hello", 10, 20))) // expect: 0
+
+var mask = Bytes.fromList([0xFF, 0xFF, 0xFF, 0xFF])
+var data = Bytes.fromList([0, 1, 2, 3])
+var xored = Bytes.xorMask(data, mask)
+System.print(Bytes.toList(xored)) // expect: [255, 254, 253, 252]
+
+var mask2 = Bytes.fromList([0x12, 0x34])
+var data2 = Bytes.fromList([0, 0, 0, 0])
+var xored2 = Bytes.xorMask(data2, mask2)
+System.print(Bytes.toList(xored2)) // expect: [18, 52, 18, 52]
@@ -0,0 +1,20 @@
+// retoor <retoor@molodetz.nl>
+
+import "dataset" for Dataset
+
+var ds = Dataset.memory()
+
+var users = ds["users"]
+users.insert({"name": "Alice"})
+
+var cols1 = users.columns
+System.print(cols1.containsKey("uid")) // expect: true
+System.print(cols1.containsKey("name")) // expect: true
+System.print(cols1.containsKey("email")) // expect: false
+
+users.insert({"name": "Bob", "email": "bob@example.com"})
+
+var cols2 = users.columns
+System.print(cols2.containsKey("email")) // expect: true
+
+ds.close()
@@ -0,0 +1,20 @@
+// retoor <retoor@molodetz.nl>
+
+import "dataset" for Dataset
+
+var ds = Dataset.memory()
+var users = ds["users"]
+
+var user = users.insert({"name": "Alice", "age": 30})
+System.print(user["name"]) // expect: Alice
+System.print(user["age"]) // expect: 30
+System.print(user["uid"] != null) // expect: true
+System.print(user["created_at"] != null) // expect: true
+
+var user2 = users.insert({"name": "Bob", "age": 25, "active": true})
+System.print(user2["name"]) // expect: Bob
+System.print(user2["active"]) // expect: true
+
+System.print(users.count()) // expect: 2
+
+ds.close()
@@ -0,0 +1,25 @@
+// retoor <retoor@molodetz.nl>
+
+import "dataset" for Dataset
+
+var ds = Dataset.memory()
+var users = ds["users"]
+
+users.insert({"name": "Alice", "age": 30})
+users.insert({"name": "Bob", "age": 25})
+users.insert({"name": "Charlie", "age": 35})
+
+var all = users.all()
+System.print(all.count) // expect: 3
+
+var found = users.find({"age__gt": 28})
+System.print(found.count) // expect: 2
+
+var alice = users.findOne({"name": "Alice"})
+System.print(alice["age"]) // expect: 30
+
+var young = users.find({"age__lt": 30})
+System.print(young.count) // expect: 1
+System.print(young[0]["name"]) // expect: Bob
+
+ds.close()
@@ -0,0 +1,19 @@
+// retoor <retoor@molodetz.nl>
+
+import "dataset" for Dataset
+
+var ds = Dataset.memory()
+var users = ds["users"]
+
+var user = users.insert({"name": "Alice", "age": 30})
+var uid = user["uid"]
+
+users.update({"uid": uid, "age": 31})
+var updated = users.findOne({"uid": uid})
+System.print(updated["age"]) // expect: 31
+
+System.print(users.count()) // expect: 1
+System.print(users.delete(uid)) // expect: true
+System.print(users.count()) // expect: 0
+
+ds.close()
@@ -0,0 +1,12 @@
+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+var encoded = Html.encodeParams({"name": "John Doe", "age": 30})
+System.print(encoded.contains("name=John+Doe")) // expect: true
+System.print(encoded.contains("age=30")) // expect: true
+System.print(encoded.contains("&")) // expect: true
+
+var decoded = Html.decodeParams("name=John+Doe&age=30")
+System.print(decoded["name"]) // expect: John Doe
+System.print(decoded["age"]) // expect: 30
@@ -0,0 +1,13 @@
+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.quote("<script>")) // expect: &lt;script&gt;
+System.print(Html.quote("a & b")) // expect: a &amp; b
+System.print(Html.quote("\"quoted\"")) // expect: &quot;quoted&quot;
+System.print(Html.quote("it's")) // expect: it&#39;s
+System.print(Html.quote("normal text")) // expect: normal text
+
+System.print(Html.unquote("&lt;script&gt;")) // expect: <script>
+System.print(Html.unquote("a &amp; b")) // expect: a & b
+System.print(Html.unquote("&quot;quoted&quot;")) // expect: "quoted"
@@ -0,0 +1,10 @@
+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.slugify("Hello World")) // expect: hello-world
+System.print(Html.slugify("This is a TEST")) // expect: this-is-a-test
+System.print(Html.slugify("foo---bar")) // expect: foo-bar
+System.print(Html.slugify("  spaces  ")) // expect: spaces
+System.print(Html.slugify("test123")) // expect: test123
+System.print(Html.slugify("UPPERCASE")) // expect: uppercase
@@ -0,0 +1,14 @@
+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.urldecode("hello+world")) // expect: hello world
+
+var encoded1 = "foo" + "\%3D" + "bar"
+System.print(Html.urldecode(encoded1)) // expect: foo=bar
+
+var encoded2 = "a" + "\%26" + "b"
+System.print(Html.urldecode(encoded2)) // expect: a&b
+
+System.print(Html.urldecode("test")) // expect: test
+System.print(Html.urldecode("")) // expect:
@@ -0,0 +1,9 @@
+// retoor <retoor@molodetz.nl>
+
+import "html" for Html
+
+System.print(Html.urlencode("hello world")) // expect: hello+world
+System.print(Html.urlencode("foo=bar")) // expect: foo%3Dbar
+System.print(Html.urlencode("a&b")) // expect: a%26b
+System.print(Html.urlencode("test")) // expect: test
+System.print(Html.urlencode("")) // expect:
@@ -0,0 +1,16 @@
+// retoor <retoor@molodetz.nl>
+
+import "markdown" for Markdown
+
+var code = Markdown.toHtml("```\ncode here\n```")
+System.print(code.contains("<pre><code>")) // expect: true
+System.print(code.contains("code here")) // expect: true
+System.print(code.contains("</code></pre>")) // expect: true
+
+var quote = Markdown.toHtml("> quoted text")
+System.print(quote.contains("<blockquote>")) // expect: true
+System.print(quote.contains("quoted text")) // expect: true
+System.print(quote.contains("</blockquote>")) // expect: true
+
+var hr = Markdown.toHtml("---")
+System.print(hr.contains("<hr>")) // expect: true
@@ -0,0 +1,8 @@
+// retoor <retoor@molodetz.nl>
+
+import "markdown" for Markdown
+
+System.print(Markdown.toHtml("**bold**")) // expect: <p><strong>bold</strong></p>
+System.print(Markdown.toHtml("*italic*")) // expect: <p><em>italic</em></p>
+System.print(Markdown.toHtml("`code`")) // expect: <p><code>code</code></p>
+System.print(Markdown.toHtml("~~deleted~~")) // expect: <p><del>deleted</del></p>
@@ -0,0 +1,8 @@
+// retoor <retoor@molodetz.nl>
+
+import "markdown" for Markdown
+
+System.print(Markdown.toHtml("# Heading 1")) // expect: <h1>Heading 1</h1>
+System.print(Markdown.toHtml("## Heading 2")) // expect: <h2>Heading 2</h2>
+System.print(Markdown.toHtml("### Heading 3")) // expect: <h3>Heading 3</h3>
+System.print(Markdown.toHtml("###### Heading 6")) // expect: <h6>Heading 6</h6>
@@ -0,0 +1,9 @@
+// retoor <retoor@molodetz.nl>
+
+import "markdown" for Markdown
+
+var link = Markdown.toHtml("[Google](https://google.com)")
+System.print(link.contains("<a href=\"https://google.com\">Google</a>")) // expect: true
+
+var img = Markdown.toHtml("![Alt text](image.png)")
+System.print(img.contains("<img src=\"image.png\" alt=\"Alt text\">")) // expect: true
@@ -0,0 +1,14 @@
+// retoor <retoor@molodetz.nl>
+
+import "markdown" for Markdown
+
+var ul = Markdown.toHtml("- item 1\n- item 2")
+System.print(ul.contains("<ul>")) // expect: true
+System.print(ul.contains("<li>item 1</li>")) // expect: true
+System.print(ul.contains("<li>item 2</li>")) // expect: true
+System.print(ul.contains("</ul>")) // expect: true
+
+var ol = Markdown.toHtml("1. first\n2. second")
+System.print(ol.contains("<ol>")) // expect: true
+System.print(ol.contains("<li>first</li>")) // expect: true
+System.print(ol.contains("</ol>")) // expect: true
@@ -0,0 +1,27 @@
+// retoor <retoor@molodetz.nl>
+
+import "uuid" for Uuid
+
+var u1 = Uuid.v4()
+System.print(u1.count) // expect: 36
+
+System.print(u1[8] == "-") // expect: true
+System.print(u1[13] == "-") // expect: true
+System.print(u1[18] == "-") // expect: true
+System.print(u1[23] == "-") // expect: true
+
+System.print(u1[14]) // expect: 4
+
+var variant = u1[19]
+System.print(variant == "8" || variant == "9" || variant == "a" || variant == "b") // expect: true
+
+System.print(Uuid.isValid(u1)) // expect: true
+System.print(Uuid.isV4(u1)) // expect: true
+
+System.print(Uuid.isValid("550e8400-e29b-41d4-a716-446655440000")) // expect: true
+System.print(Uuid.isValid("invalid-uuid")) // expect: false
+System.print(Uuid.isValid(123)) // expect: false
+System.print(Uuid.isValid("550e8400-e29b-41d4-a716-44665544000X")) // expect: false
+
+var u2 = Uuid.v4()
+System.print(u1 != u2) // expect: true
@@ -0,0 +1,36 @@
+// retoor <retoor@molodetz.nl>
+
+import "wdantic" for Schema, Field, ValidationResult
+
+var userSchema = Schema.new({
+  "name": Field.string({"minLength": 1}),
+  "age": Field.integer({"min": 0, "max": 150}),
+  "email": Field.email()
+})
+
+var validData = {"name": "John", "age": 30, "email": "john@example.com"}
+var result = userSchema.validate(validData)
+System.print(result.isValid) // expect: true
+System.print(result.data["name"]) // expect: John
+System.print(result.data["age"]) // expect: 30
+
+var invalidData = {"name": "", "age": -5, "email": "invalid"}
+var result2 = userSchema.validate(invalidData)
+System.print(result2.isValid) // expect: false
+System.print(result2.errors.count > 0) // expect: true
+
+var optionalSchema = Schema.new({
+  "name": Field.string(),
+  "nickname": Field.optional(Field.string())
+})
+
+var data3 = {"name": "Alice"}
+var result3 = optionalSchema.validate(data3)
+System.print(result3.isValid) // expect: true
+
+var listSchema = Schema.new({
+  "tags": Field.list(Field.string())
+})
+var data4 = {"tags": ["a", "b", "c"]}
+var result4 = listSchema.validate(data4)
+System.print(result4.isValid) // expect: true
@@ -0,0 +1,36 @@
+// retoor <retoor@molodetz.nl>
+
+import "wdantic" for Validator
+
+System.print(Validator.email("test@example.com")) // expect: true
+System.print(Validator.email("invalid")) // expect: false
+System.print(Validator.email("test@domain")) // expect: false
+
+System.print(Validator.domain("example.com")) // expect: true
+System.print(Validator.domain("sub.example.com")) // expect: true
+System.print(Validator.domain("-invalid.com")) // expect: false
+
+System.print(Validator.safeStr("Hello World")) // expect: true
+System.print(Validator.safeStr("Line1\nLine2")) // expect: false
+
+System.print(Validator.url("https://example.com")) // expect: true
+System.print(Validator.url("http://localhost:8080/path")) // expect: true
+System.print(Validator.url("ftp://invalid")) // expect: false
+
+System.print(Validator.uuid("550e8400-e29b-41d4-a716-446655440000")) // expect: true
+System.print(Validator.uuid("invalid")) // expect: false
+
+System.print(Validator.minLength("hello", 3)) // expect: true
+System.print(Validator.minLength("hi", 3)) // expect: false
+
+System.print(Validator.maxLength("hi", 5)) // expect: true
+System.print(Validator.maxLength("hello world", 5)) // expect: false
+
+System.print(Validator.range(5, 1, 10)) // expect: true
+System.print(Validator.range(15, 1, 10)) // expect: false
+
+System.print(Validator.positive(5)) // expect: true
+System.print(Validator.positive(-5)) // expect: false
+
+System.print(Validator.integer(5)) // expect: true
+System.print(Validator.integer(5.5)) // expect: false
@@ -0,0 +1,19 @@
+// retoor <retoor@molodetz.nl>
+
+import "web" for Response
+
+var r1 = Response.text("Hello")
+System.print(r1.body) // expect: Hello
+System.print(r1.headers["Content-Type"].contains("text/plain")) // expect: true
+
+var r2 = Response.html("<h1>Hi</h1>")
+System.print(r2.body) // expect: <h1>Hi</h1>
+System.print(r2.headers["Content-Type"].contains("text/html")) // expect: true
+
+var r3 = Response.json({"name": "test"})
+System.print(r3.body.contains("name")) // expect: true
+System.print(r3.headers["Content-Type"].contains("application/json")) // expect: true
+
+var r4 = Response.redirect("/login")
+System.print(r4.status) // expect: 302
+System.print(r4.headers["Location"]) // expect: /login
@@ -0,0 +1,21 @@
+// retoor <retoor@molodetz.nl>
+
+import "web" for Router
+
+var router = Router.new()
+router.get("/", Fn.new { |r| "home" })
+router.get("/users/:id", Fn.new { |r| "user" })
+router.post("/api/data", Fn.new { |r| "data" })
+
+var m1 = router.match("GET", "/")
+System.print(m1 != null) // expect: true
+
+var m2 = router.match("GET", "/users/123")
+System.print(m2 != null) // expect: true
+System.print(m2["params"]["id"]) // expect: 123
+
+var m3 = router.match("POST", "/api/data")
+System.print(m3 != null) // expect: true
+
+var m4 = router.match("GET", "/notfound")
+System.print(m4 == null) // expect: true
@@ -0,0 +1,19 @@
+// retoor <retoor@molodetz.nl>
+
+import "web" for SessionStore
+
+var store = SessionStore.new()
+var session = store.create()
+System.print(session.id != null) // expect: true
+System.print(session.id.count) // expect: 36
+
+session["user"] = "alice"
+System.print(session["user"]) // expect: alice
+
+store.save(session)
+var retrieved = store.get(session.id)
+System.print(retrieved != null) // expect: true
+System.print(retrieved["user"]) // expect: alice
+
+store.destroy(session.id)
+System.print(store.get(session.id) == null) // expect: true
@@ -0,0 +1,69 @@
+// retoor <retoor@molodetz.nl>
+
+import "websocket" for WebSocket, WebSocketServer
+import "scheduler" for Scheduler
+import "timer" for Timer
+
+var port = 19877
+var payloadSize = 3 * 1024 * 1024
+var result = "pending"
+
+Scheduler.add {
+  var server = WebSocketServer.bind("127.0.0.1", port)
+  var ws = server.accept()
+
+  if (ws != null) {
+    var msg = ws.receive()
+    if (msg != null && msg.isBinary) {
+      ws.sendBinary(msg.bytes)
+    }
+    ws.close()
+  }
+  server.close()
+}
+
+Timer.sleep(50)
+
+Scheduler.add {
+  var ws = WebSocket.connect("ws://127.0.0.1:%(port)")
+
+  var payload = []
+  var i = 0
+  while (i < payloadSize) {
+    payload.add(i % 256)
+    i = i + 1
+  }
+
+  ws.sendBinary(payload)
+
+  var response = ws.receive()
+
+  if (response == null) {
+    result = "error: no response"
+  } else if (!response.isBinary) {
+    result = "error: not binary"
+  } else if (response.bytes.count != payloadSize) {
+    result = "error: size mismatch %(response.bytes.count) != %(payloadSize)"
+  } else {
+    var mismatch = false
+    i = 0
+    while (i < payloadSize) {
+      if (response.bytes[i] != (i % 256)) {
+        mismatch = true
+        break
+      }
+      i = i + 1
+    }
+    if (mismatch) {
+      result = "error: data mismatch at %(i)"
+    } else {
+      result = "ok"
+    }
+  }
+
+  ws.close()
+}
+
+Timer.sleep(30000)
+
+System.print(result) // expect: ok