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d53fd721a1
In my tour of the ui_file subsystem, I found that fputstr and fputstrn can be simplified. The _filtered forms are never used (and IMO unlikely to ever be used) and so can be removed. And, the interface can be simplified by removing a callback function and moving the implementation directly to ui_file. A new self-test is included. Previously, I think nothing was testing this code. Regression tested on x86-64 Fedora 34.
107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/* MI Console code.
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Copyright (C) 2000-2022 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions (a Red Hat company).
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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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/* An MI console is a kind of ui_file stream that sends output to
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stdout, but encapsulated and prefixed with a distinctive string;
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for instance, error output is normally identified by a leading
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"&". */
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#include "defs.h"
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#include "mi-console.h"
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/* Create a console that wraps the given output stream RAW with the
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string PREFIX and quoting it with QUOTE. */
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mi_console_file::mi_console_file (ui_file *raw, const char *prefix, char quote)
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: m_raw (raw),
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m_prefix (prefix),
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m_quote (quote)
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{}
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void
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mi_console_file::write (const char *buf, long length_buf)
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{
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size_t prev_size = m_buffer.size ();
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/* Append the text to our internal buffer. */
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m_buffer.write (buf, length_buf);
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/* Flush when an embedded newline is present anywhere in the
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buffer. */
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if (strchr (m_buffer.c_str () + prev_size, '\n') != NULL)
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this->flush ();
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}
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void
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mi_console_file::write_async_safe (const char *buf, long length_buf)
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{
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m_raw->write_async_safe (m_prefix, strlen (m_prefix));
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if (m_quote)
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{
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m_raw->write_async_safe (&m_quote, 1);
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m_raw->putstrn (buf, length_buf, m_quote, true);
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m_raw->write_async_safe (&m_quote, 1);
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}
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else
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m_raw->putstrn (buf, length_buf, 0, true);
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char nl = '\n';
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m_raw->write_async_safe (&nl, 1);
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}
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void
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mi_console_file::flush ()
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{
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const std::string &str = m_buffer.string ();
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/* Transform a byte sequence into a console output packet. */
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if (!str.empty ())
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{
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size_t length_buf = str.size ();
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const char *buf = str.data ();
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fputs_unfiltered (m_prefix, m_raw);
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if (m_quote)
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{
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fputc_unfiltered (m_quote, m_raw);
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m_raw->putstrn (buf, length_buf, m_quote);
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fputc_unfiltered (m_quote, m_raw);
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fputc_unfiltered ('\n', m_raw);
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}
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else
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{
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m_raw->putstrn (buf, length_buf, 0);
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fputc_unfiltered ('\n', m_raw);
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}
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gdb_flush (m_raw);
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}
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m_buffer.clear ();
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}
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/* Change the underlying stream of the console directly; this is
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useful as a minimum-impact way to reflect external changes like
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logging enable/disable. */
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void
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mi_console_file::set_raw (ui_file *raw)
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{
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m_raw = raw;
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}
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