Initial checkin of gRPC to third_party/

third_party/grpc/src/compiler/ruby_generator_string-inl.h

+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * 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.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_COMPILER_RUBY_GENERATOR_STRING_INL_H
+#define GRPC_INTERNAL_COMPILER_RUBY_GENERATOR_STRING_INL_H
+
+#include "src/compiler/config.h"
+
+#include <algorithm>
+#include <sstream>
+#include <vector>
+
+using std::getline;
+using std::transform;
+
+namespace grpc_ruby_generator {
+
+// Split splits a string using char into elems.
+inline std::vector<grpc::string> &Split(const grpc::string &s, char delim,
+                                        std::vector<grpc::string> *elems) {
+  std::stringstream ss(s);
+  grpc::string item;
+  while (getline(ss, item, delim)) {
+    elems->push_back(item);
+  }
+  return *elems;
+}
+
+// Split splits a string using char, returning the result in a vector.
+inline std::vector<grpc::string> Split(const grpc::string &s, char delim) {
+  std::vector<grpc::string> elems;
+  Split(s, delim, &elems);
+  return elems;
+}
+
+// Replace replaces from with to in s.
+inline grpc::string Replace(grpc::string s, const grpc::string &from,
+                            const grpc::string &to) {
+  size_t start_pos = s.find(from);
+  if (start_pos == grpc::string::npos) {
+    return s;
+  }
+  s.replace(start_pos, from.length(), to);
+  return s;
+}
+
+// ReplaceAll replaces all instances of search with replace in s.
+inline grpc::string ReplaceAll(grpc::string s, const grpc::string &search,
+                               const grpc::string &replace) {
+  size_t pos = 0;
+  while ((pos = s.find(search, pos)) != grpc::string::npos) {
+    s.replace(pos, search.length(), replace);
+    pos += replace.length();
+  }
+  return s;
+}
+
+// ReplacePrefix replaces from with to in s if search is a prefix of s.
+inline bool ReplacePrefix(grpc::string *s, const grpc::string &from,
+                          const grpc::string &to) {
+  size_t start_pos = s->find(from);
+  if (start_pos == grpc::string::npos || start_pos != 0) {
+    return false;
+  }
+  s->replace(start_pos, from.length(), to);
+  return true;
+}
+
+// CapitalizeFirst capitalizes the first char in a string.
+inline grpc::string CapitalizeFirst(grpc::string s) {
+  if (s.empty()) {
+    return s;
+  }
+  s[0] = ::toupper(s[0]);
+  return s;
+}
+
+// RubyTypeOf updates a proto type to the required ruby equivalent.
+inline grpc::string RubyTypeOf(const grpc::string &a_type,
+                               const grpc::string &package) {
+  grpc::string res(a_type);
+  ReplacePrefix(&res, package, "");  // remove the leading package if present
+  ReplacePrefix(&res, ".", "");      // remove the leading . (no package)
+  if (res.find('.') == grpc::string::npos) {
+    return res;
+  } else {
+    std::vector<grpc::string> prefixes_and_type = Split(res, '.');
+    for (unsigned int i = 0; i < prefixes_and_type.size(); ++i) {
+      if (i != 0) {
+        res += "::";  // switch '.' to the ruby module delim
+      }
+      if (i < prefixes_and_type.size() - 1) {
+        res += CapitalizeFirst(prefixes_and_type[i]);  // capitalize pkgs
+      } else {
+        res += prefixes_and_type[i];
+      }
+    }
+    return res;
+  }
+}
+
+}  // namespace grpc_ruby_generator
+
+#endif  // GRPC_INTERNAL_COMPILER_RUBY_GENERATOR_STRING_INL_H