71 lines
2.1 KiB
C++
71 lines
2.1 KiB
C++
// Copyright 2013 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef NINJA_LINE_PRINTER_H_
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#define NINJA_LINE_PRINTER_H_
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#include <stddef.h>
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#include <string>
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/// Prints lines of text, possibly overprinting previously printed lines
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/// if the terminal supports it.
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struct LinePrinter {
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LinePrinter();
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bool is_smart_terminal() const { return smart_terminal_; }
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void set_smart_terminal(bool smart) { smart_terminal_ = smart; }
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enum LineType {
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FULL,
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ELIDE
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};
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/// Overprints the current line. If type is ELIDE, elides to_print to fit on
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/// one line.
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void Print(std::string to_print, LineType type);
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/// Prints a string on a new line, not overprinting previous output.
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void PrintOnNewLine(const std::string& to_print);
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/// Lock or unlock the console. Any output sent to the LinePrinter while the
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/// console is locked will not be printed until it is unlocked.
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void SetConsoleLocked(bool locked);
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private:
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/// Whether we can do fancy terminal control codes.
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bool smart_terminal_;
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/// Whether the caret is at the beginning of a blank line.
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bool have_blank_line_;
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/// Whether console is locked.
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bool console_locked_;
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/// Buffered current line while console is locked.
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std::string line_buffer_;
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/// Buffered line type while console is locked.
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LineType line_type_;
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/// Buffered console output while console is locked.
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std::string output_buffer_;
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#ifdef _WIN32
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void* console_;
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#endif
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/// Print the given data to the console, or buffer it if it is locked.
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void PrintOrBuffer(const char *data, size_t size);
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};
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#endif // NINJA_LINE_PRINTER_H_
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