Add base64_encode(), base64_decode()

3 files changed, 114 insertions, 1 deletions

diff --git a/tests/base64/buildfile b/tests/base64/buildfile
new file mode 100644
index 0000000..63212fa
--- /dev/null
+++ b/tests/base64/buildfile
@@ -0,0 +1,7 @@
+# file      : tests/base64/buildfile
+# copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+exe{driver}: cxx{driver} ../../butl/lib{butl}
+
+include ../../butl/
diff --git a/tests/base64/driver.cxx b/tests/base64/driver.cxx
new file mode 100644
index 0000000..e43e04a
--- /dev/null
+++ b/tests/base64/driver.cxx
@@ -0,0 +1,106 @@
+// file      : tests/base64/driver.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include <butl/base64>
+
+using namespace std;
+using namespace butl;
+
+static bool
+encode (const string& i, const string& o)
+{
+  // Test encoding.
+  //
+  istringstream is (i);
+  string s (base64_encode (is));
+  bool r (s == o && is.eof ());
+
+  if (r)
+  {
+    is.seekg (0);
+    ostringstream os;
+    base64_encode (os, is);
+    r = os.str () == o && is.eof ();
+  }
+
+  if (r)
+    r = base64_encode (vector<char> (i.begin (), i.end ())) == o;
+
+  // Test decoding.
+  //
+  if (r)
+  {
+    istringstream is (o);
+    ostringstream os;
+    base64_decode (os, is);
+    r = os.str () == i;
+  }
+
+  if (r)
+  {
+    ostringstream os;
+    base64_decode (os, o);
+    r = os.str () == i;
+  }
+
+  if (r)
+  {
+    vector<char> v (base64_decode (o));
+    r = string (v.begin (), v.end ()) == i;
+  }
+
+  return r;
+}
+
+int
+main ()
+{
+  assert (encode ("", ""));
+  assert (encode ("B", "Qg=="));
+  assert (encode ("BX", "Qlg="));
+  assert (encode ("BXz", "Qlh6"));
+  assert (encode ("BXzS", "Qlh6Uw=="));
+  assert (encode ("BXzS@", "Qlh6U0A="));
+  assert (encode ("BXzS@#", "Qlh6U0Aj"));
+  assert (encode ("BXzS@#/", "Qlh6U0AjLw=="));
+
+  const char* s (R"delim(
+class fdstream_base
+{
+protected:
+  fdstream_base () = default;
+  fdstream_base (int fd): buf_ (fd) {}
+
+protected:
+  fdbuf buf_;
+};
+
+class ifdstream: fdstream_base, public std::istream
+{
+public:
+  ifdstream (): std::istream (&buf_) {}
+  ifdstream (int fd): fdstream_base (fd), std::istream (&buf_) {}
+
+  void close () {buf_.close ();}
+  void open (int fd) {buf_.open (fd);}
+  bool is_open () const {return buf_.is_open ();}
+};
+)delim");
+
+  const char* r (R"delim(
+CmNsYXNzIGZkc3RyZWFtX2Jhc2UKewpwcm90ZWN0ZWQ6CiAgZmRzdHJlYW1fYmFzZSAoKSA9IGRl
+ZmF1bHQ7CiAgZmRzdHJlYW1fYmFzZSAoaW50IGZkKTogYnVmXyAoZmQpIHt9Cgpwcm90ZWN0ZWQ6
+CiAgZmRidWYgYnVmXzsKfTsKCmNsYXNzIGlmZHN0cmVhbTogZmRzdHJlYW1fYmFzZSwgcHVibGlj
+IHN0ZDo6aXN0cmVhbQp7CnB1YmxpYzoKICBpZmRzdHJlYW0gKCk6IHN0ZDo6aXN0cmVhbSAoJmJ1
+Zl8pIHt9CiAgaWZkc3RyZWFtIChpbnQgZmQpOiBmZHN0cmVhbV9iYXNlIChmZCksIHN0ZDo6aXN0
+cmVhbSAoJmJ1Zl8pIHt9CgogIHZvaWQgY2xvc2UgKCkge2J1Zl8uY2xvc2UgKCk7fQogIHZvaWQg
+b3BlbiAoaW50IGZkKSB7YnVmXy5vcGVuIChmZCk7fQogIGJvb2wgaXNfb3BlbiAoKSBjb25zdCB7
+cmV0dXJuIGJ1Zl8uaXNfb3BlbiAoKTt9Cn07Cg==)delim");
+
+  assert (encode (s, r + 1));
+}
diff --git a/tests/buildfile b/tests/buildfile
index 45c78d6..59caba8 100644
--- a/tests/buildfile
+++ b/tests/buildfile
@@ -2,6 +2,6 @@
 # copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
 # license   : MIT; see accompanying LICENSE file
 
-d = dir-iterator/ path/ prefix-map/ sha256/ timestamp/ triplet/
+d = base64/ dir-iterator/ path/ prefix-map/ sha256/ timestamp/ triplet/
 .: $d
 include $d