binutils-gdb/gdb/mi/mi-console.c
Tom Tromey a11ac3b3e8 Unify gdb putc functions
Now that filtered and unfiltered output can be treated identically, we
can unify the putc family of functions.  This is done under the name
"gdb_putc".  Most of this patch was written by script.
2022-03-29 12:46:24 -06:00

107 lines
2.8 KiB
C

/* MI Console code.
Copyright (C) 2000-2022 Free Software Foundation, Inc.
Contributed by Cygnus Solutions (a Red Hat company).
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* An MI console is a kind of ui_file stream that sends output to
stdout, but encapsulated and prefixed with a distinctive string;
for instance, error output is normally identified by a leading
"&". */
#include "defs.h"
#include "mi-console.h"
/* Create a console that wraps the given output stream RAW with the
string PREFIX and quoting it with QUOTE. */
mi_console_file::mi_console_file (ui_file *raw, const char *prefix, char quote)
: m_raw (raw),
m_prefix (prefix),
m_quote (quote)
{}
void
mi_console_file::write (const char *buf, long length_buf)
{
size_t prev_size = m_buffer.size ();
/* Append the text to our internal buffer. */
m_buffer.write (buf, length_buf);
/* Flush when an embedded newline is present anywhere in the
buffer. */
if (strchr (m_buffer.c_str () + prev_size, '\n') != NULL)
this->flush ();
}
void
mi_console_file::write_async_safe (const char *buf, long length_buf)
{
m_raw->write_async_safe (m_prefix, strlen (m_prefix));
if (m_quote)
{
m_raw->write_async_safe (&m_quote, 1);
m_raw->putstrn (buf, length_buf, m_quote, true);
m_raw->write_async_safe (&m_quote, 1);
}
else
m_raw->putstrn (buf, length_buf, 0, true);
char nl = '\n';
m_raw->write_async_safe (&nl, 1);
}
void
mi_console_file::flush ()
{
const std::string &str = m_buffer.string ();
/* Transform a byte sequence into a console output packet. */
if (!str.empty ())
{
size_t length_buf = str.size ();
const char *buf = str.data ();
gdb_puts (m_prefix, m_raw);
if (m_quote)
{
gdb_putc (m_quote, m_raw);
m_raw->putstrn (buf, length_buf, m_quote);
gdb_putc (m_quote, m_raw);
gdb_putc ('\n', m_raw);
}
else
{
m_raw->putstrn (buf, length_buf, 0);
gdb_putc ('\n', m_raw);
}
gdb_flush (m_raw);
}
m_buffer.clear ();
}
/* Change the underlying stream of the console directly; this is
useful as a minimum-impact way to reflect external changes like
logging enable/disable. */
void
mi_console_file::set_raw (ui_file *raw)
{
m_raw = raw;
}