third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/compiler/js/embed.cc

+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <cassert>
+#include <cstdlib>
+#include <fstream>
+#include <iostream>
+#include <string>
+
+const char output_file[] = "well_known_types_embed.cc";
+
+static bool AsciiIsPrint(unsigned char c) {
+  return c >= 32 && c < 127;
+}
+
+static char ToDecimalDigit(int num) {
+  assert(num < 10);
+  return '0' + num;
+}
+
+static std::string CEscape(const std::string& str) {
+  std::string dest;
+
+  for (unsigned char ch : str) {
+    switch (ch) {
+      case '\n': dest += "\\n"; break;
+      case '\r': dest += "\\r"; break;
+      case '\t': dest += "\\t"; break;
+      case '\"': dest += "\\\""; break;
+      case '\\': dest += "\\\\"; break;
+      default:
+        if (AsciiIsPrint(ch)) {
+          dest += ch;
+        } else {
+          dest += "\\";
+          dest += ToDecimalDigit(ch / 64);
+          dest += ToDecimalDigit((ch % 64) / 8);
+          dest += ToDecimalDigit(ch % 8);
+        }
+        break;
+    }
+  }
+
+  return dest;
+}
+
+static void AddFile(const char* name, std::basic_ostream<char>* out) {
+  std::ifstream in(name);
+
+  if (!in.is_open()) {
+    std::cerr << "Couldn't open input file: " << name << "\n";
+    std::exit(EXIT_FAILURE);
+  }
+
+  // Make canonical name only include the final element.
+  for (const char *p = name; *p; p++) {
+    if (*p == '/') {
+      name = p + 1;
+    }
+  }
+
+  *out << "{\"" << CEscape(name) << "\",\n";
+
+  for (std::string line; std::getline(in, line); ) {
+    *out << "  \"" << CEscape(line) << "\\n\"\n";
+  }
+
+  *out << "},\n";
+}
+
+int main(int argc, char *argv[]) {
+  auto& out = std::cout;
+
+  out << "#include "
+         "\"google/protobuf/compiler/js/well_known_types_embed.h\"\n";
+  out << "struct FileToc well_known_types_js[] = {\n";
+
+  for (int i = 1; i < argc; i++) {
+    AddFile(argv[i], &out);
+  }
+
+  out << "  {NULL, NULL}  // Terminate the list.\n";
+  out << "};\n";
+
+  return EXIT_SUCCESS;
+}