92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
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/* Output pager for gdb
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Copyright (C) 2021, 2022 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_PAGER_H
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#define GDB_PAGER_H
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#include "ui-file.h"
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/* A ui_file that implements output paging and unfiltered output. */
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class pager_file : public wrapped_file
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{
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public:
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/* Create a new pager_file. The new object takes ownership of
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STREAM. */
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explicit pager_file (ui_file *stream)
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: wrapped_file (stream)
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{
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}
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~pager_file ()
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{
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delete m_stream;
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}
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DISABLE_COPY_AND_ASSIGN (pager_file);
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void write (const char *buf, long length_buf) override;
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void puts (const char *str) override;
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void write_async_safe (const char *buf, long length_buf) override
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{
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m_stream->write_async_safe (buf, length_buf);
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}
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void emit_style_escape (const ui_file_style &style) override;
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void reset_style () override;
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void flush () override;
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void wrap_here (int indent) override;
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void puts_unfiltered (const char *str) override
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{
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flush_wrap_buffer ();
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m_stream->puts_unfiltered (str);
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}
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private:
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void prompt_for_continue ();
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/* Flush the wrap buffer to STREAM, if necessary. */
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void flush_wrap_buffer ();
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/* Contains characters which are waiting to be output (they have
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already been counted in chars_printed). */
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std::string m_wrap_buffer;
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/* Amount to indent by if the wrap occurs. */
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int m_wrap_indent = 0;
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/* Column number on the screen where wrap_buffer begins, or 0 if
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wrapping is not in effect. */
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int m_wrap_column = 0;
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/* The style applied at the time that wrap_here was called. */
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ui_file_style m_wrap_style;
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/* This is temporarily set when paging. This will cause some
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methods to change their behavior to ignore the wrap buffer. */
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bool m_paging = false;
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};
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#endif /* GDB_PAGER_H */
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