Initial project import

tools/v/examples/veb/file_transform/file_transform.v

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+module main
+
+import veb
+
+const port = 8082
+
+pub struct Context {
+	veb.Context
+}
+
+pub struct App {
+}
+
+fn main() {
+	mut app := &App{}
+	veb.run[App, Context](mut app, port)
+}
+
+pub fn (mut app App) index() veb.Result {
+	return $veb.html()
+}
+
+@['/upload'; post]
+pub fn (mut app App) upload(mut ctx Context) veb.Result {
+	fdata := ctx.files['upfile']
+
+	data_rows := fdata[0].data.split('\n')
+
+	mut output_data := ''
+
+	for elem in data_rows {
+		delim_row := elem.split('\t')
+		output_data += '${delim_row[0]}\t${delim_row[1]}\t${delim_row[0].int() + delim_row[1].int()}\n'
+	}
+
+	output_data = output_data.all_before_last('\n')
+
+	println(output_data)
+
+	ctx.set_header(.content_disposition, 'attachment; filename=results.txt')
+	ctx.send_response_to_client('application/octet-stream', output_data)
+
+	return $veb.html()
+}

tools/v/examples/veb/file_transform/index.html

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+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8" />
+<title>Test file uploading data transformation</title>
+</head>
+<body>
+
+<h2>File Upload and Data Transformation</h2>
+
+Upload the <b>sample_input.txt</b> located in this example folder. 
+<br>
+<br> 
+V will apply data transformation, adding the first two columns into a third column, and return the results as a download. <br>
+<br>
+
+For example:
+<table style="color:blue;">
+	<tr>
+	  	<td>10</td>
+	  	<td>13</td>
+	</tr>
+	<tr>
+		<td>20</td>
+		<td>54</td>
+	</tr>
+	<tr>
+		<td>30</td>
+		<td>82</td>
+	</tr>
+	<tr>
+		<td>40</td>
+		<td>11</td>
+	</tr>
+	<tr>
+		<td>50</td>
+		<td>47</td>
+	</tr>
+  </table>
+<br>
+Becomes...
+<br>
+<table style="color:blue;">
+	<tr>
+	  	<td>10</td>
+	  	<td>13</td>
+		<td>23</td>
+	</tr>
+	<tr>
+		<td>20</td>
+		<td>54</td>
+		<td>74</td>
+	</tr>
+	<tr>
+		<td>30</td>
+		<td>82</td>
+		<td>112</td>
+	</tr>
+	<tr>
+		<td>40</td>
+		<td>11</td>
+		<td>51</td>
+	</tr>
+	<tr>
+		<td>50</td>
+		<td>47</td>
+		<td>97</td>
+	</tr>
+  </table>
+
+<hr>
+
+File form:
+<form method="POST" enctype="multipart/form-data" action="http://localhost:8082/upload">
+	<input type="file" name="upfile"/>
+	<input type="submit" value="Upload & Transform"/>
+</form>
+
+</body>
+</html>

tools/v/examples/veb/file_transform/sample_input.txt

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+10	13
+20	54
+30	82
+40	11
+50	47

tools/v/examples/veb/file_transform/upload.html

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+<meta charset="utf-8">
+<a href="/">Back</a>