Move base64 from 'net/base' into 'base'.

BUG=13572
TEST=none

Review URL: http://codereview.chromium.org/399068

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@32918 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 99 insertions, 0 deletions

diff --git a/base/DEPS b/base/DEPS
index c454d70..5df72a6 100644
--- a/base/DEPS
+++ b/base/DEPS
@@ -1,6 +1,7 @@
 include_rules = [
   "+third_party/libevent",
   "+third_party/dmg_fp",
+  "+third_party/modp_b64",
   "+third_party/tcmalloc",
 
   # Testing stuff shouldn't be used by the general base code.
diff --git a/base/base.gyp b/base/base.gyp
index 5ba7d4b..75ce295 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -11,6 +11,9 @@
       'target_name': 'base',
       'type': '<(library)',
       'msvs_guid': '1832A374-8A74-4F9E-B536-69A699B3E165',
+      'dependencies': [
+        '../third_party/modp_b64/modp_b64.gyp:modp_b64',
+      ],
       'sources': [
         '../build/build_config.h',
         'crypto/cssm_init.cc',
@@ -70,6 +73,8 @@
         'atomicops.h',
         'atomicops_internals_x86_msvc.h',
         'auto_reset.h',
+        'base64.cc',
+        'base64.h',
         'base_drag_source.cc',
         'base_drag_source.h',
         'base_drop_target.cc',
@@ -605,6 +610,7 @@
         'at_exit_unittest.cc',
         'atomic_flag_unittest.cc',
         'atomicops_unittest.cc',
+        'base64_unittest.cc',
         'bits_unittest.cc',
         'command_line_unittest.cc',
         'condition_variable_unittest.cc',
diff --git a/base/base64.cc b/base/base64.cc
new file mode 100644
index 0000000..56a577d
--- /dev/null
+++ b/base/base64.cc
@@ -0,0 +1,41 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/base64.h"
+
+#include "third_party/modp_b64/modp_b64.h"
+
+namespace base {
+
+bool Base64Encode(const std::string& input, std::string* output) {
+  std::string temp;
+  temp.resize(modp_b64_encode_len(input.size()));  // makes room for null byte
+
+  // null terminates result since result is base64 text!
+  int input_size = static_cast<int>(input.size());
+  int output_size= modp_b64_encode(&(temp[0]), input.data(), input_size);
+  if (output_size < 0)
+    return false;
+
+  temp.resize(output_size);  // strips off null byte
+  output->swap(temp);
+  return true;
+}
+
+bool Base64Decode(const std::string& input, std::string* output) {
+  std::string temp;
+  temp.resize(modp_b64_decode_len(input.size()));
+
+  // does not null terminate result since result is binary data!
+  int input_size = static_cast<int>(input.size());
+  int output_size = modp_b64_decode(&(temp[0]), input.data(), input_size);
+  if (output_size < 0)
+    return false;
+
+  temp.resize(output_size);
+  output->swap(temp);
+  return true;
+}
+
+}  // namespace base
diff --git a/base/base64.h b/base/base64.h
new file mode 100644
index 0000000..d45a8a3
--- /dev/null
+++ b/base/base64.h
@@ -0,0 +1,22 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_BASE64_H__
+#define BASE_BASE64_H__
+
+#include <string>
+
+namespace base {
+
+// Encodes the input string in base64.  Returns true if successful and false
+// otherwise.  The output string is only modified if successful.
+bool Base64Encode(const std::string& input, std::string* output);
+
+// Decodes the base64 input string.  Returns true if successful and false
+// otherwise.  The output string is only modified if successful.
+bool Base64Decode(const std::string& input, std::string* output);
+
+}  // namespace base
+
+#endif  // BASE_BASE64_H__
diff --git a/base/base64_unittest.cc b/base/base64_unittest.cc
new file mode 100644
index 0000000..1d11b1e
--- /dev/null
+++ b/base/base64_unittest.cc
@@ -0,0 +1,29 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/base64.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class Base64Test : public testing::Test {
+};
+
+}  // namespace
+
+TEST(Base64Test, Basic) {
+  const std::string kText = "hello world";
+  const std::string kBase64Text = "aGVsbG8gd29ybGQ=";
+
+  std::string encoded, decoded;
+  bool ok;
+
+  ok = base::Base64Encode(kText, &encoded);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(kBase64Text, encoded);
+
+  ok = base::Base64Decode(encoded, &decoded);
+  EXPECT_TRUE(ok);
+  EXPECT_EQ(kText, decoded);
+}