add diagram server script

2024-01-01 20:59:01 +01:00
parent 7a8a5bdfa0
commit f5d8df3147
2 changed files with 134 additions and 2 deletions
@@ -0,0 +1,130 @@
+from http.server import BaseHTTPRequestHandler, HTTPServer
+from urllib.parse import parse_qs
+import subprocess as sp
+import os
+
+def page(src="", content=""):
+    return f"""
+<html>
+    <head>
+        <meta charset="utf-8" />
+        <title>Noja Diagram Server</title>
+        <style>
+        * {{
+            margin: 0;
+            padding: 0;
+            outline: 0;
+        }}
+        body {{
+            width: 100%;
+            height: 100%;
+        }}
+        #left-panel,
+        #right-panel {{
+            width: calc(50% - 20px);
+            height: calc(100% - 20px);
+            float: left;
+            padding: 10px;
+        }}
+        #controls {{
+            width: 100%;
+            height: 30px;
+            overflow: auto;
+        }}
+        textarea {{
+            width: 100%;
+            height: calc(100% - 40px);
+            padding: 10px;
+            margin-top: 10px;
+            font-size: 28px;
+        }}
+        input {{
+            height: 30px;
+            padding: 0 10px;
+            float: right;
+        }}
+        #left-panel {{
+            background-color: #eee;
+        }}
+        #right-panel {{
+            overflow: auto;
+        }}
+        svg {{
+            margin: auto 100px;
+        }}
+        </style>
+    </head>
+    <body>
+        <div id="left-panel">
+            <form method="post" action="/">
+                <div id="controls">
+                    <input type="submit" value="Draw AST">
+                </div>
+                <textarea id="message" name="message" rows="4" cols="50" placeholder="[Noja code goes here!]">{src}</textarea><br>
+            </form>
+        </div>
+        <div id="right-panel">
+            {content}
+        </div>
+    </body>
+</html>
+"""
+
+class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
+    def do_GET(self):
+        self.send_response(200)
+        self.send_header('Content-type', 'text/html')
+        self.end_headers()
+        self.wfile.write(page().encode('utf-8'))
+
+    def do_POST(self):
+        content_length = int(self.headers['Content-Length'])
+        post_data = self.rfile.read(content_length).decode('utf-8')
+        parsed_data = parse_qs(post_data)
+
+        self.send_response(200)
+        self.send_header('Content-type', 'text/html')
+        self.end_headers()
+
+        if 'message' not in parsed_data:
+            self.wfile.write(page().encode('utf-8'))
+            return
+
+        message = parsed_data['message'][0]
+
+        src = "/tmp/src.noja"
+        tmp = "/tmp/tmp.dot"
+        dst = "/tmp/dst.svg"
+
+        open(src, "wb").write(bytes(message, 'ascii'))
+
+        cmd = f"noja --diagram-ast -o {tmp} {src}"
+        output = sp.Popen(cmd, shell=True, stderr=sp.PIPE).stderr.read().decode('utf-8')
+
+        if not os.path.isfile(tmp):
+            self.wfile.write(page(message, output).encode('utf-8'))
+            return
+
+        cmd = f"dot -Tsvg -o {dst} {tmp}"
+        output = sp.Popen(cmd, shell=True, stdout=sp.PIPE).stdout.read().decode('utf-8')
+
+        if not os.path.isfile(dst):
+            self.wfile.write(page(message, output).encode('utf-8'))
+            return
+
+        svg = open(dst, "rb").read().decode('utf-8')
+
+        os.remove(src)
+        os.remove(tmp)
+        os.remove(dst)
+
+        self.wfile.write(page(message, svg).encode('utf-8'))
+
+def run(server_class=HTTPServer, handler_class=SimpleHTTPRequestHandler, port=8000):
+    server_address = ('', port)
+    httpd = server_class(server_address, handler_class)
+    print(f"Server avviato su http://localhost:{port}")
+    httpd.serve_forever()
+
+if __name__ == '__main__':
+    run()
@@ -157,11 +157,13 @@ int main(int argc, char **argv)
 			Error error;
 		   Error_Init(&error);

+		   int error_offset;
+
 			char *result;
 			if (no_file)
-			  	result = diagramStringAST(input, &error, NULL);
+			  	result = diagramStringAST(input, &error, &error_offset);
 		   else
-				result = diagramFileAST(input, &error, NULL);
+				result = diagramFileAST(input, &error, &error_offset);

 			if (!result) {
 				Error_Print(&error, ErrorType_UNSPECIFIED, stderr);