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// Copyright (c) 2011 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 "extensions/common/error_utils.h"
#include <initializer_list>
#include <ostream>
#include "base/check_op.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_tokenizer.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
namespace extensions {
namespace {
std::string FormatErrorMessageInternal(
base::StringPiece format,
std::initializer_list<base::StringPiece> args) {
std::string format_str(format);
base::StringTokenizer tokenizer(format_str, "*");
tokenizer.set_options(base::StringTokenizer::RETURN_DELIMS);
std::vector<base::StringPiece> result_pieces;
auto* args_it = args.begin();
while (tokenizer.GetNext()) {
if (!tokenizer.token_is_delim()) {
result_pieces.push_back(tokenizer.token_piece());
continue;
}
CHECK_NE(args_it, args.end())
<< "More placeholders (*) than substitutions.";
// Substitute the argument.
result_pieces.push_back(*args_it);
args_it++;
}
// Not all substitutions were consumed.
CHECK_EQ(args_it, args.end()) << "Fewer placeholders (*) than substitutions.";
return base::JoinString(result_pieces, "" /* separator */);
}
} // namespace
std::string ErrorUtils::FormatErrorMessage(base::StringPiece format,
base::StringPiece s1) {
return FormatErrorMessageInternal(format, {s1});
}
std::string ErrorUtils::FormatErrorMessage(base::StringPiece format,
base::StringPiece s1,
base::StringPiece s2) {
return FormatErrorMessageInternal(format, {s1, s2});
}
std::string ErrorUtils::FormatErrorMessage(base::StringPiece format,
base::StringPiece s1,
base::StringPiece s2,
base::StringPiece s3) {
return FormatErrorMessageInternal(format, {s1, s2, s3});
}
std::u16string ErrorUtils::FormatErrorMessageUTF16(base::StringPiece format,
base::StringPiece s1) {
return base::UTF8ToUTF16(FormatErrorMessageInternal(format, {s1}));
}
std::u16string ErrorUtils::FormatErrorMessageUTF16(base::StringPiece format,
base::StringPiece s1,
base::StringPiece s2) {
return base::UTF8ToUTF16(FormatErrorMessageInternal(format, {s1, s2}));
}
std::u16string ErrorUtils::FormatErrorMessageUTF16(base::StringPiece format,
base::StringPiece s1,
base::StringPiece s2,
base::StringPiece s3) {
return base::UTF8ToUTF16(FormatErrorMessageInternal(format, {s1, s2, s3}));
}
} // namespace extensions
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