/* UI_FILE - a generic STDIO like output stream.
- Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1999-2018 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-/* Implement the ``struct ui_file'' object. */
+/* Implement the ``struct ui_file'' object. */
#include "defs.h"
#include "ui-file.h"
-#include "gdb_string.h"
+#include "gdb_obstack.h"
+#include "gdb_select.h"
+#include "filestuff.h"
-static ui_file_isatty_ftype null_file_isatty;
-static ui_file_write_ftype null_file_write;
-static ui_file_fputs_ftype null_file_fputs;
-static ui_file_flush_ftype null_file_flush;
-static ui_file_delete_ftype null_file_delete;
-static ui_file_rewind_ftype null_file_rewind;
-static ui_file_put_ftype null_file_put;
+null_file null_stream;
-struct ui_file
- {
- int *magic;
- ui_file_flush_ftype *to_flush;
- ui_file_write_ftype *to_write;
- ui_file_fputs_ftype *to_fputs;
- ui_file_delete_ftype *to_delete;
- ui_file_isatty_ftype *to_isatty;
- ui_file_rewind_ftype *to_rewind;
- ui_file_put_ftype *to_put;
- void *to_data;
- };
-int ui_file_magic;
-
-struct ui_file *
-ui_file_new (void)
-{
- struct ui_file *file = xmalloc (sizeof (struct ui_file));
- file->magic = &ui_file_magic;
- set_ui_file_data (file, NULL, null_file_delete);
- set_ui_file_flush (file, null_file_flush);
- set_ui_file_write (file, null_file_write);
- set_ui_file_fputs (file, null_file_fputs);
- set_ui_file_isatty (file, null_file_isatty);
- set_ui_file_rewind (file, null_file_rewind);
- set_ui_file_put (file, null_file_put);
- return file;
-}
+ui_file::ui_file ()
+{}
+
+ui_file::~ui_file ()
+{}
void
-ui_file_delete (struct ui_file *file)
+ui_file::printf (const char *format, ...)
{
- file->to_delete (file);
- xfree (file);
-}
+ va_list args;
-static int
-null_file_isatty (struct ui_file *file)
-{
- return 0;
+ va_start (args, format);
+ vfprintf_unfiltered (this, format, args);
+ va_end (args);
}
-static void
-null_file_rewind (struct ui_file *file)
+void
+ui_file::putstr (const char *str, int quoter)
{
- return;
+ fputstr_unfiltered (str, quoter, this);
}
-static void
-null_file_put (struct ui_file *file,
- ui_file_put_method_ftype *write,
- void *dest)
+void
+ui_file::putstrn (const char *str, int n, int quoter)
{
- return;
+ fputstrn_unfiltered (str, n, quoter, fputc_unfiltered, this);
}
-static void
-null_file_flush (struct ui_file *file)
+int
+ui_file::putc (int c)
{
- return;
+ return fputc_unfiltered (c, this);
}
-static void
-null_file_write (struct ui_file *file,
- const char *buf,
- long sizeof_buf)
+void
+ui_file::vprintf (const char *format, va_list args)
{
- if (file->to_fputs == null_file_fputs)
- /* Both the write and fputs methods are null. Discard the
- request. */
- return;
- else
- {
- /* The fputs method isn't null, slowly pass the write request
- onto that. FYI, this isn't as bad as it may look - the
- current (as of 1999-11-07) printf_* function calls fputc and
- fputc does exactly the below. By having a write function it
- is possible to clean up that code. */
- int i;
- char b[2];
- b[1] = '\0';
- for (i = 0; i < sizeof_buf; i++)
- {
- b[0] = buf[i];
- file->to_fputs (b, file);
- }
- return;
- }
+ vfprintf_unfiltered (this, format, args);
}
-static void
-null_file_fputs (const char *buf, struct ui_file *file)
-{
- if (file->to_write == null_file_write)
- /* Both the write and fputs methods are null. Discard the
- request. */
- return;
- else
- {
- /* The write method was implemented, use that. */
- file->to_write (file, buf, strlen (buf));
- }
-}
+\f
-static void
-null_file_delete (struct ui_file *file)
+void
+null_file::write (const char *buf, long sizeof_buf)
{
- return;
+ /* Discard the request. */
}
-void *
-ui_file_data (struct ui_file *file)
+void
+null_file::puts (const char *)
{
- if (file->magic != &ui_file_magic)
- internal_error (__FILE__, __LINE__,
- "ui_file_data: bad magic number");
- return file->to_data;
+ /* Discard the request. */
}
void
-gdb_flush (struct ui_file *file)
+null_file::write_async_safe (const char *buf, long sizeof_buf)
{
- file->to_flush (file);
+ /* Discard the request. */
}
-int
-ui_file_isatty (struct ui_file *file)
-{
- return file->to_isatty (file);
-}
+\f
void
-ui_file_rewind (struct ui_file *file)
+gdb_flush (struct ui_file *file)
{
- file->to_rewind (file);
+ file->flush ();
}
-void
-ui_file_put (struct ui_file *file,
- ui_file_put_method_ftype *write,
- void *dest)
+int
+ui_file_isatty (struct ui_file *file)
{
- file->to_put (file, write, dest);
+ return file->isatty ();
}
void
const char *buf,
long length_buf)
{
- file->to_write (file, buf, length_buf);
+ file->write (buf, length_buf);
}
void
-fputs_unfiltered (const char *buf, struct ui_file *file)
+ui_file_write_async_safe (struct ui_file *file,
+ const char *buf,
+ long length_buf)
{
- file->to_fputs (buf, file);
+ file->write_async_safe (buf, length_buf);
}
-void
-set_ui_file_flush (struct ui_file *file, ui_file_flush_ftype *flush)
+long
+ui_file_read (struct ui_file *file, char *buf, long length_buf)
{
- file->to_flush = flush;
+ return file->read (buf, length_buf);
}
void
-set_ui_file_isatty (struct ui_file *file, ui_file_isatty_ftype *isatty)
+fputs_unfiltered (const char *buf, struct ui_file *file)
{
- file->to_isatty = isatty;
+ file->puts (buf);
}
+\f
+
+string_file::~string_file ()
+{}
+
void
-set_ui_file_rewind (struct ui_file *file, ui_file_rewind_ftype *rewind)
+string_file::write (const char *buf, long length_buf)
{
- file->to_rewind = rewind;
+ m_string.append (buf, length_buf);
}
-void
-set_ui_file_put (struct ui_file *file, ui_file_put_ftype *put)
+\f
+
+stdio_file::stdio_file (FILE *file, bool close_p)
{
- file->to_put = put;
+ set_stream (file);
+ m_close_p = close_p;
}
-void
-set_ui_file_write (struct ui_file *file,
- ui_file_write_ftype *write)
+stdio_file::stdio_file ()
+ : m_file (NULL),
+ m_fd (-1),
+ m_close_p (false)
+{}
+
+stdio_file::~stdio_file ()
{
- file->to_write = write;
+ if (m_close_p)
+ fclose (m_file);
}
void
-set_ui_file_fputs (struct ui_file *file, ui_file_fputs_ftype *fputs)
+stdio_file::set_stream (FILE *file)
{
- file->to_fputs = fputs;
+ m_file = file;
+ m_fd = fileno (file);
}
-void
-set_ui_file_data (struct ui_file *file, void *data,
- ui_file_delete_ftype *delete)
+bool
+stdio_file::open (const char *name, const char *mode)
{
- file->to_data = data;
- file->to_delete = delete;
-}
+ /* Close the previous stream, if we own it. */
+ if (m_close_p)
+ {
+ fclose (m_file);
+ m_close_p = false;
+ }
-/* ui_file utility function for converting a ``struct ui_file'' into
- a memory buffer''. */
+ gdb_file_up f = gdb_fopen_cloexec (name, mode);
-struct accumulated_ui_file
-{
- char *buffer;
- long length;
-};
+ if (f == NULL)
+ return false;
-static void
-do_ui_file_xstrdup (void *context, const char *buffer, long length)
-{
- struct accumulated_ui_file *acc = context;
- if (acc->buffer == NULL)
- acc->buffer = xmalloc (length + 1);
- else
- acc->buffer = xrealloc (acc->buffer, acc->length + length + 1);
- memcpy (acc->buffer + acc->length, buffer, length);
- acc->length += length;
- acc->buffer[acc->length] = '\0';
+ set_stream (f.release ());
+ m_close_p = true;
+
+ return true;
}
-char *
-ui_file_xstrdup (struct ui_file *file,
- long *length)
+void
+stdio_file::flush ()
{
- struct accumulated_ui_file acc;
- acc.buffer = NULL;
- acc.length = 0;
- ui_file_put (file, do_ui_file_xstrdup, &acc);
- if (acc.buffer == NULL)
- acc.buffer = xstrdup ("");
- *length = acc.length;
- return acc.buffer;
+ fflush (m_file);
}
-\f
-/* A pure memory based ``struct ui_file'' that can be used an output
- buffer. The buffers accumulated contents are available via
- ui_file_put(). */
-struct mem_file
+long
+stdio_file::read (char *buf, long length_buf)
+{
+ /* Wait until at least one byte of data is available, or we get
+ interrupted with Control-C. */
{
- int *magic;
- char *buffer;
- int sizeof_buffer;
- int length_buffer;
- };
+ fd_set readfds;
-static ui_file_rewind_ftype mem_file_rewind;
-static ui_file_put_ftype mem_file_put;
-static ui_file_write_ftype mem_file_write;
-static ui_file_delete_ftype mem_file_delete;
-static struct ui_file *mem_file_new (void);
-static int mem_file_magic;
+ FD_ZERO (&readfds);
+ FD_SET (m_fd, &readfds);
+ if (interruptible_select (m_fd + 1, &readfds, NULL, NULL, NULL) == -1)
+ return -1;
+ }
-static struct ui_file *
-mem_file_new (void)
+ return ::read (m_fd, buf, length_buf);
+}
+
+void
+stdio_file::write (const char *buf, long length_buf)
{
- struct mem_file *stream = XMALLOC (struct mem_file);
- struct ui_file *file = ui_file_new ();
- set_ui_file_data (file, stream, mem_file_delete);
- set_ui_file_rewind (file, mem_file_rewind);
- set_ui_file_put (file, mem_file_put);
- set_ui_file_write (file, mem_file_write);
- stream->magic = &mem_file_magic;
- stream->buffer = NULL;
- stream->sizeof_buffer = 0;
- stream->length_buffer = 0;
- return file;
+ /* Calling error crashes when we are called from the exception framework. */
+ if (fwrite (buf, length_buf, 1, m_file))
+ {
+ /* Nothing. */
+ }
}
-static void
-mem_file_delete (struct ui_file *file)
+void
+stdio_file::write_async_safe (const char *buf, long length_buf)
{
- struct mem_file *stream = ui_file_data (file);
- if (stream->magic != &mem_file_magic)
- internal_error (__FILE__, __LINE__,
- "mem_file_delete: bad magic number");
- if (stream->buffer != NULL)
- xfree (stream->buffer);
- xfree (stream);
+ /* This is written the way it is to avoid a warning from gcc about not using the
+ result of write (since it can be declared with attribute warn_unused_result).
+ Alas casting to void doesn't work for this. */
+ if (::write (m_fd, buf, length_buf))
+ {
+ /* Nothing. */
+ }
}
-struct ui_file *
-mem_fileopen (void)
+void
+stdio_file::puts (const char *linebuffer)
{
- return mem_file_new ();
+ /* Calling error crashes when we are called from the exception framework. */
+ if (fputs (linebuffer, m_file))
+ {
+ /* Nothing. */
+ }
}
-static void
-mem_file_rewind (struct ui_file *file)
+bool
+stdio_file::isatty ()
{
- struct mem_file *stream = ui_file_data (file);
- if (stream->magic != &mem_file_magic)
- internal_error (__FILE__, __LINE__,
- "mem_file_rewind: bad magic number");
- stream->length_buffer = 0;
+ return ::isatty (m_fd);
}
-static void
-mem_file_put (struct ui_file *file,
- ui_file_put_method_ftype *write,
- void *dest)
+\f
+
+/* This is the implementation of ui_file method 'write' for stderr.
+ gdb_stdout is flushed before writing to gdb_stderr. */
+
+void
+stderr_file::write (const char *buf, long length_buf)
{
- struct mem_file *stream = ui_file_data (file);
- if (stream->magic != &mem_file_magic)
- internal_error (__FILE__, __LINE__,
- "mem_file_put: bad magic number");
- if (stream->length_buffer > 0)
- write (dest, stream->buffer, stream->length_buffer);
+ gdb_flush (gdb_stdout);
+ stdio_file::write (buf, length_buf);
}
+/* This is the implementation of ui_file method 'puts' for stderr.
+ gdb_stdout is flushed before writing to gdb_stderr. */
+
void
-mem_file_write (struct ui_file *file,
- const char *buffer,
- long length_buffer)
-{
- struct mem_file *stream = ui_file_data (file);
- if (stream->magic != &mem_file_magic)
- internal_error (__FILE__, __LINE__,
- "mem_file_write: bad magic number");
- if (stream->buffer == NULL)
- {
- stream->length_buffer = length_buffer;
- stream->sizeof_buffer = length_buffer;
- stream->buffer = xmalloc (stream->sizeof_buffer);
- memcpy (stream->buffer, buffer, length_buffer);
- }
- else
- {
- int new_length = stream->length_buffer + length_buffer;
- if (new_length >= stream->sizeof_buffer)
- {
- stream->sizeof_buffer = new_length;
- stream->buffer = xrealloc (stream->buffer, stream->sizeof_buffer);
- }
- memcpy (stream->buffer + stream->length_buffer, buffer, length_buffer);
- stream->length_buffer = new_length;
- }
+stderr_file::puts (const char *linebuffer)
+{
+ gdb_flush (gdb_stdout);
+ stdio_file::puts (linebuffer);
}
-\f
-/* ``struct ui_file'' implementation that maps directly onto
- <stdio.h>'s FILE. */
-static ui_file_write_ftype stdio_file_write;
-static ui_file_fputs_ftype stdio_file_fputs;
-static ui_file_isatty_ftype stdio_file_isatty;
-static ui_file_delete_ftype stdio_file_delete;
-static struct ui_file *stdio_file_new (FILE * file, int close_p);
-static ui_file_flush_ftype stdio_file_flush;
+stderr_file::stderr_file (FILE *stream)
+ : stdio_file (stream)
+{}
-static int stdio_file_magic;
+\f
-struct stdio_file
- {
- int *magic;
- FILE *file;
- int close_p;
- };
-
-static struct ui_file *
-stdio_file_new (FILE *file, int close_p)
-{
- struct ui_file *ui_file = ui_file_new ();
- struct stdio_file *stdio = xmalloc (sizeof (struct stdio_file));
- stdio->magic = &stdio_file_magic;
- stdio->file = file;
- stdio->close_p = close_p;
- set_ui_file_data (ui_file, stdio, stdio_file_delete);
- set_ui_file_flush (ui_file, stdio_file_flush);
- set_ui_file_write (ui_file, stdio_file_write);
- set_ui_file_fputs (ui_file, stdio_file_fputs);
- set_ui_file_isatty (ui_file, stdio_file_isatty);
- return ui_file;
-}
-
-static void
-stdio_file_delete (struct ui_file *file)
-{
- struct stdio_file *stdio = ui_file_data (file);
- if (stdio->magic != &stdio_file_magic)
- internal_error (__FILE__, __LINE__,
- "stdio_file_delete: bad magic number");
- if (stdio->close_p)
- {
- fclose (stdio->file);
- }
- xfree (stdio);
-}
+tee_file::tee_file (ui_file *one, bool close_one,
+ ui_file *two, bool close_two)
+ : m_one (one),
+ m_two (two),
+ m_close_one (close_one),
+ m_close_two (close_two)
+{}
-static void
-stdio_file_flush (struct ui_file *file)
+tee_file::~tee_file ()
{
- struct stdio_file *stdio = ui_file_data (file);
- if (stdio->magic != &stdio_file_magic)
- internal_error (__FILE__, __LINE__,
- "stdio_file_flush: bad magic number");
- fflush (stdio->file);
+ if (m_close_one)
+ delete m_one;
+ if (m_close_two)
+ delete m_two;
}
-static void
-stdio_file_write (struct ui_file *file, const char *buf, long length_buf)
+void
+tee_file::flush ()
{
- struct stdio_file *stdio = ui_file_data (file);
- if (stdio->magic != &stdio_file_magic)
- internal_error (__FILE__, __LINE__,
- "stdio_file_write: bad magic number");
- fwrite (buf, length_buf, 1, stdio->file);
+ m_one->flush ();
+ m_two->flush ();
}
-static void
-stdio_file_fputs (const char *linebuffer, struct ui_file *file)
+void
+tee_file::write (const char *buf, long length_buf)
{
- struct stdio_file *stdio = ui_file_data (file);
- if (stdio->magic != &stdio_file_magic)
- internal_error (__FILE__, __LINE__,
- "stdio_file_fputs: bad magic number");
- fputs (linebuffer, stdio->file);
+ m_one->write (buf, length_buf);
+ m_two->write (buf, length_buf);
}
-static int
-stdio_file_isatty (struct ui_file *file)
+void
+tee_file::write_async_safe (const char *buf, long length_buf)
{
- struct stdio_file *stdio = ui_file_data (file);
- if (stdio->magic != &stdio_file_magic)
- internal_error (__FILE__, __LINE__,
- "stdio_file_isatty: bad magic number");
- return (isatty (fileno (stdio->file)));
+ m_one->write_async_safe (buf, length_buf);
+ m_two->write_async_safe (buf, length_buf);
}
-/* Like fdopen(). Create a ui_file from a previously opened FILE. */
-
-struct ui_file *
-stdio_fileopen (FILE *file)
+void
+tee_file::puts (const char *linebuffer)
{
- return stdio_file_new (file, 0);
+ m_one->puts (linebuffer);
+ m_two->puts (linebuffer);
}
-struct ui_file *
-gdb_fopen (char *name, char *mode)
+bool
+tee_file::isatty ()
{
- FILE *f = fopen (name, mode);
- if (f == NULL)
- return NULL;
- return stdio_file_new (f, 1);
+ return m_one->isatty ();
}
projects / deliverable / binutils-gdb.git / blobdiff