| /* UI_FILE - a generic STDIO like output stream. |
| |
| Copyright (C) 1999-2017 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/>. */ |
| |
| /* Implement the ``struct ui_file'' object. */ |
| |
| #include "defs.h" |
| #include "ui-file.h" |
| #include "gdb_obstack.h" |
| #include "gdb_select.h" |
| #include "filestuff.h" |
| |
| null_file null_stream; |
| |
| ui_file::ui_file () |
| {} |
| |
| ui_file::~ui_file () |
| {} |
| |
| void |
| ui_file::printf (const char *format, ...) |
| { |
| va_list args; |
| |
| va_start (args, format); |
| vfprintf_unfiltered (this, format, args); |
| va_end (args); |
| } |
| |
| void |
| ui_file::putstr (const char *str, int quoter) |
| { |
| fputstr_unfiltered (str, quoter, this); |
| } |
| |
| void |
| ui_file::putstrn (const char *str, int n, int quoter) |
| { |
| fputstrn_unfiltered (str, n, quoter, this); |
| } |
| |
| int |
| ui_file::putc (int c) |
| { |
| return fputc_unfiltered (c, this); |
| } |
| |
| void |
| ui_file::vprintf (const char *format, va_list args) |
| { |
| vfprintf_unfiltered (this, format, args); |
| } |
| |
| |
| |
| void |
| null_file::write (const char *buf, long sizeof_buf) |
| { |
| /* Discard the request. */ |
| } |
| |
| void |
| null_file::puts (const char *) |
| { |
| /* Discard the request. */ |
| } |
| |
| void |
| null_file::write_async_safe (const char *buf, long sizeof_buf) |
| { |
| /* Discard the request. */ |
| } |
| |
| |
| |
| void |
| gdb_flush (struct ui_file *file) |
| { |
| file->flush (); |
| } |
| |
| int |
| ui_file_isatty (struct ui_file *file) |
| { |
| return file->isatty (); |
| } |
| |
| void |
| ui_file_write (struct ui_file *file, |
| const char *buf, |
| long length_buf) |
| { |
| file->write (buf, length_buf); |
| } |
| |
| void |
| ui_file_write_async_safe (struct ui_file *file, |
| const char *buf, |
| long length_buf) |
| { |
| file->write_async_safe (buf, length_buf); |
| } |
| |
| long |
| ui_file_read (struct ui_file *file, char *buf, long length_buf) |
| { |
| return file->read (buf, length_buf); |
| } |
| |
| void |
| fputs_unfiltered (const char *buf, struct ui_file *file) |
| { |
| file->puts (buf); |
| } |
| |
| |
| |
| string_file::~string_file () |
| {} |
| |
| void |
| string_file::write (const char *buf, long length_buf) |
| { |
| m_string.append (buf, length_buf); |
| } |
| |
| |
| |
| stdio_file::stdio_file (FILE *file, bool close_p) |
| { |
| set_stream (file); |
| m_close_p = close_p; |
| } |
| |
| stdio_file::stdio_file () |
| : m_file (NULL), |
| m_fd (-1), |
| m_close_p (false) |
| {} |
| |
| stdio_file::~stdio_file () |
| { |
| if (m_close_p) |
| fclose (m_file); |
| } |
| |
| void |
| stdio_file::set_stream (FILE *file) |
| { |
| m_file = file; |
| m_fd = fileno (file); |
| } |
| |
| bool |
| stdio_file::open (const char *name, const char *mode) |
| { |
| /* Close the previous stream, if we own it. */ |
| if (m_close_p) |
| { |
| fclose (m_file); |
| m_close_p = false; |
| } |
| |
| gdb_file_up f = gdb_fopen_cloexec (name, mode); |
| |
| if (f == NULL) |
| return false; |
| |
| set_stream (f.release ()); |
| m_close_p = true; |
| |
| return true; |
| } |
| |
| void |
| stdio_file::flush () |
| { |
| fflush (m_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. */ |
| { |
| fd_set readfds; |
| |
| FD_ZERO (&readfds); |
| FD_SET (m_fd, &readfds); |
| if (interruptible_select (m_fd + 1, &readfds, NULL, NULL, NULL) == -1) |
| return -1; |
| } |
| |
| return ::read (m_fd, buf, length_buf); |
| } |
| |
| void |
| stdio_file::write (const char *buf, long length_buf) |
| { |
| /* Calling error crashes when we are called from the exception framework. */ |
| if (fwrite (buf, length_buf, 1, m_file)) |
| { |
| /* Nothing. */ |
| } |
| } |
| |
| void |
| stdio_file::write_async_safe (const char *buf, long length_buf) |
| { |
| /* 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. */ |
| } |
| } |
| |
| void |
| stdio_file::puts (const char *linebuffer) |
| { |
| /* Calling error crashes when we are called from the exception framework. */ |
| if (fputs (linebuffer, m_file)) |
| { |
| /* Nothing. */ |
| } |
| } |
| |
| bool |
| stdio_file::isatty () |
| { |
| return ::isatty (m_fd); |
| } |
| |
| |
| |
| /* 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) |
| { |
| 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 |
| stderr_file::puts (const char *linebuffer) |
| { |
| gdb_flush (gdb_stdout); |
| stdio_file::puts (linebuffer); |
| } |
| |
| stderr_file::stderr_file (FILE *stream) |
| : stdio_file (stream) |
| {} |
| |
| |
| |
| 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) |
| {} |
| |
| tee_file::~tee_file () |
| { |
| if (m_close_one) |
| delete m_one; |
| if (m_close_two) |
| delete m_two; |
| } |
| |
| void |
| tee_file::flush () |
| { |
| m_one->flush (); |
| m_two->flush (); |
| } |
| |
| void |
| tee_file::write (const char *buf, long length_buf) |
| { |
| m_one->write (buf, length_buf); |
| m_two->write (buf, length_buf); |
| } |
| |
| void |
| tee_file::write_async_safe (const char *buf, long length_buf) |
| { |
| m_one->write_async_safe (buf, length_buf); |
| m_two->write_async_safe (buf, length_buf); |
| } |
| |
| void |
| tee_file::puts (const char *linebuffer) |
| { |
| m_one->puts (linebuffer); |
| m_two->puts (linebuffer); |
| } |
| |
| bool |
| tee_file::isatty () |
| { |
| return m_one->isatty (); |
| } |