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/* UI_FILE - a generic STDIO like output stream.
Copyright (C) 1999-2015 Free Software Foundation, Inc.
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/>. */
#include "defs.h"
#include "ui-file.h"
#include "tui/tui-file.h"
#include "tui/tui-io.h"
#include "tui/tui-command.h"
#include "tui.h"
/* A ``struct ui_file'' that is compatible with all the legacy
code. */
/* new */
enum streamtype
{
afile,
astring
};
/* new */
struct tui_stream
{
int *ts_magic;
enum streamtype ts_streamtype;
FILE *ts_filestream;
char *ts_strbuf;
int ts_buflen;
};
static ui_file_flush_ftype tui_file_flush;
extern ui_file_fputs_ftype tui_file_fputs;
static ui_file_isatty_ftype tui_file_isatty;
static ui_file_rewind_ftype tui_file_rewind;
static ui_file_put_ftype tui_file_put;
static ui_file_delete_ftype tui_file_delete;
static struct ui_file *tui_file_new (void);
static int tui_file_magic;
static struct ui_file *
tui_file_new (void)
{
struct tui_stream *tui = XNEW (struct tui_stream);
struct ui_file *file = ui_file_new ();
set_ui_file_data (file, tui, tui_file_delete);
set_ui_file_flush (file, tui_file_flush);
set_ui_file_fputs (file, tui_file_fputs);
set_ui_file_isatty (file, tui_file_isatty);
set_ui_file_rewind (file, tui_file_rewind);
set_ui_file_put (file, tui_file_put);
tui->ts_magic = &tui_file_magic;
return file;
}
static void
tui_file_delete (struct ui_file *file)
{
struct tui_stream *tmpstream = (struct tui_stream *) ui_file_data (file);
if (tmpstream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_delete: bad magic number"));
if ((tmpstream->ts_streamtype == astring)
&& (tmpstream->ts_strbuf != NULL))
{
xfree (tmpstream->ts_strbuf);
}
xfree (tmpstream);
}
struct ui_file *
tui_fileopen (FILE *stream)
{
struct ui_file *file = tui_file_new ();
struct tui_stream *tmpstream = (struct tui_stream *) ui_file_data (file);
tmpstream->ts_streamtype = afile;
tmpstream->ts_filestream = stream;
tmpstream->ts_strbuf = NULL;
tmpstream->ts_buflen = 0;
return file;
}
struct ui_file *
tui_sfileopen (int n)
{
struct ui_file *file = tui_file_new ();
struct tui_stream *tmpstream = (struct tui_stream *) ui_file_data (file);
tmpstream->ts_streamtype = astring;
tmpstream->ts_filestream = NULL;
if (n > 0)
{
tmpstream->ts_strbuf = XNEWVEC (char, n + 1);
tmpstream->ts_strbuf[0] = '\0';
}
else
/* Do not allocate the buffer now. The first time something is
printed one will be allocated by tui_file_adjust_strbuf(). */
tmpstream->ts_strbuf = NULL;
tmpstream->ts_buflen = n;
return file;
}
static int
tui_file_isatty (struct ui_file *file)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
if (stream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_isatty: bad magic number"));
if (stream->ts_streamtype == afile)
return (isatty (fileno (stream->ts_filestream)));
else
return 0;
}
static void
tui_file_rewind (struct ui_file *file)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
if (stream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_rewind: bad magic number"));
stream->ts_strbuf[0] = '\0';
}
static void
tui_file_put (struct ui_file *file,
ui_file_put_method_ftype *write,
void *dest)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
if (stream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_put: bad magic number"));
if (stream->ts_streamtype == astring)
write (dest, stream->ts_strbuf, strlen (stream->ts_strbuf));
}
/* All TUI I/O sent to the *_filtered and *_unfiltered functions
eventually ends up here. The fputs_unfiltered_hook is primarily
used by GUIs to collect all output and send it to the GUI, instead
of the controlling terminal. Only output to gdb_stdout and
gdb_stderr are sent to the hook. Everything else is sent on to
fputs to allow file I/O to be handled appropriately. */
/* FIXME: Should be broken up and moved to a TUI specific file. */
void
tui_file_fputs (const char *linebuffer, struct ui_file *file)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
if (stream->ts_streamtype == astring)
{
tui_file_adjust_strbuf (strlen (linebuffer), file);
strcat (stream->ts_strbuf, linebuffer);
}
else
{
tui_puts (linebuffer);
/* gdb_stdout is buffered, and the caller must gdb_flush it at
appropriate times. Other streams are not so buffered. */
if (file != gdb_stdout)
tui_refresh_cmd_win ();
}
}
char *
tui_file_get_strbuf (struct ui_file *file)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
if (stream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_get_strbuf: bad magic number"));
return (stream->ts_strbuf);
}
/* Adjust the length of the buffer by the amount necessary to
accomodate appending a string of length N to the buffer
contents. */
void
tui_file_adjust_strbuf (int n, struct ui_file *file)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
int non_null_chars;
if (stream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_adjust_strbuf: bad magic number"));
if (stream->ts_streamtype != astring)
return;
if (stream->ts_strbuf)
{
/* There is already a buffer allocated. */
non_null_chars = strlen (stream->ts_strbuf);
if (n > (stream->ts_buflen - non_null_chars - 1))
{
stream->ts_buflen = n + non_null_chars + 1;
stream->ts_strbuf
= XRESIZEVEC (char, stream->ts_strbuf, stream->ts_buflen);
}
}
else
/* No buffer yet, so allocate one of the desired size. */
stream->ts_strbuf = XNEWVEC (char, n + 1);
}
static void
tui_file_flush (struct ui_file *file)
{
struct tui_stream *stream = (struct tui_stream *) ui_file_data (file);
if (stream->ts_magic != &tui_file_magic)
internal_error (__FILE__, __LINE__,
_("tui_file_flush: bad magic number"));
switch (stream->ts_streamtype)
{
case astring:
break;
case afile:
/* gdb_stdout is buffered. Other files are always flushed on
every write. */
if (file == gdb_stdout)
tui_refresh_cmd_win ();
fflush (stream->ts_filestream);
break;
}
}
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