| // Copyright 2013 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef NINJA_LINE_PRINTER_H_ |
| #define NINJA_LINE_PRINTER_H_ |
| |
| #include <stddef.h> |
| #include <string> |
| using namespace std; |
| |
| /// Prints lines of text, possibly overprinting previously printed lines |
| /// if the terminal supports it. |
| struct LinePrinter { |
| LinePrinter(); |
| |
| bool is_smart_terminal() const { return smart_terminal_; } |
| void set_smart_terminal(bool smart) { smart_terminal_ = smart; } |
| |
| bool supports_color() const { return supports_color_; } |
| |
| enum LineType { |
| FULL, |
| ELIDE |
| }; |
| /// Overprints the current line. If type is ELIDE, elides to_print to fit on |
| /// one line. |
| void Print(string to_print, LineType type); |
| |
| /// Prints a string on a new line, not overprinting previous output. |
| void PrintOnNewLine(const string& to_print); |
| |
| /// Lock or unlock the console. Any output sent to the LinePrinter while the |
| /// console is locked will not be printed until it is unlocked. |
| void SetConsoleLocked(bool locked); |
| |
| private: |
| /// Whether we can do fancy terminal control codes. |
| bool smart_terminal_; |
| |
| /// Whether we can use ISO 6429 (ANSI) color sequences. |
| bool supports_color_; |
| |
| /// Whether the caret is at the beginning of a blank line. |
| bool have_blank_line_; |
| |
| /// Whether console is locked. |
| bool console_locked_; |
| |
| /// Buffered current line while console is locked. |
| string line_buffer_; |
| |
| /// Buffered line type while console is locked. |
| LineType line_type_; |
| |
| /// Buffered console output while console is locked. |
| string output_buffer_; |
| |
| #ifdef _WIN32 |
| void* console_; |
| #endif |
| |
| /// Print the given data to the console, or buffer it if it is locked. |
| void PrintOrBuffer(const char *data, size_t size); |
| }; |
| |
| #endif // NINJA_LINE_PRINTER_H_ |