Add Wandbox uploader.

support/single-header.py

@@ -1,6 +1,8 @@
+#! /usr/bin/env python
+
 # MPark.Variant
 #
-# Copyright Michael Park, 2015-2017
+# Copyright Michael Park, 2017
 #
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)

support/wandbox.cpp

@@ -0,0 +1,19 @@
+// MPark.Patterns
+//
+// Copyright Michael Park, 2017
+//
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include <mpark/variant.hpp>
+
+int main() {
+  std::vector<mpark::variant<int, std::string>> vs = { 101, "+", 202, "==", 303 };
+  for (const auto& v : vs) {
+    mpark::visit([](const auto& x) { std::cout << x << ' '; }, v);
+  }
+}

support/wandbox.py

@@ -0,0 +1,106 @@
+#! /usr/bin/env python
+
+# MPark.Variant
+#
+# This script uploads a directory to Wandbox (http://melpon.org/wandbox),
+# which is an online compiler environment, and prints a permalink to the
+# uploaded code. We use this to provide a "Try it online" version of the
+# library to make the barrier to entry as low as possible.
+#
+# This script was adapted from the script proposed in
+# https://github.com/melpon/wandbox/issues/153.
+#
+# To know how to use this script: ./wandbox.py --help
+#
+# Copyright Louis Dionne 2015
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+#
+# Copyright Michael Park, 2017
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+import argparse
+import fnmatch
+import json
+import os
+import re
+import urllib2
+
+# Post the given JSON data to Wandbox's API, and return the result
+# as a JSON object.
+def upload(options):
+    request = urllib2.Request('http://melpon.org/wandbox/api/compile.json')
+    request.add_header('Content-Type', 'application/json')
+    response = urllib2.urlopen(request, json.dumps(options))
+    return json.loads(response.read())
+
+# Returns a list of the '.hpp' headers in the given directory and in
+# subdirectories.
+#
+# The path must be absolute, and the returned paths are all absolute too.
+def headers(path):
+    return [
+        os.path.join(dir, file)
+            for (dir, _, files) in os.walk(path)
+                for file in fnmatch.filter(files, "*.hpp")
+    ]
+
+def main():
+    parser = argparse.ArgumentParser(description=
+        """Upload a directory to Wandbox (http://melpon.org/wandbox).
+
+           On success, the program prints a permalink to the uploaded
+           directory on Wandbox and returns 0. On error, it prints the
+           response from the Wandbox API and returns 1.
+
+           Note that the comments are stripped from all the headers in the
+           uploaded directory.
+        """
+    )
+    parser.add_argument('directory', type=str, help=
+        """A directory to upload to Wandbox.
+
+           The path may be either absolute or relative to the current directory.
+           However, the names of the files uploaded to Wandbox will all be
+           relative to this directory. This way, one can easily specify the
+           directory to be '/some/project/include', and the uploaded files
+           will be uploaded as-if they were rooted at '/some/project/include'
+        """)
+    parser.add_argument('main', type=str, help=
+        """The main source file.
+
+           The path may be either absolute or relative to the current directory.
+        """
+    )
+    args = parser.parse_args()
+    directory = os.path.abspath(args.directory)
+    if not os.path.exists(directory):
+        raise Exception("'%s' is not a valid directory" % args.directory)
+
+    cpp = os.path.abspath(args.main)
+    if not os.path.exists(cpp):
+        raise Exception("'%s' is not a valid file name" % args.main)
+
+    response = upload({
+        'code': open(cpp).read().strip(),
+        'codes': [{
+            'file': os.path.relpath(header, directory).replace('\\', '/'),
+            'code': open(header).read().strip()
+        } for header in headers(directory)],
+        'options': 'warning,optimize,c++14',
+        'compiler': 'clang-4.0.0',
+        'save': True,
+        'compiler-option-raw': '-I.'
+    })
+
+    if response['status'] == '0':
+        print response['url']
+        return 0
+    else:
+        print response
+        return 1
+
+exit(main())