gdb/ui-file.h

   1 /* UI_FILE - a generic STDIO like output stream.
   2    Copyright (C) 1999, 2000, 2007, 2008, 2009 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef UI_FILE_H
  20 #define UI_FILE_H
  21
  22 struct ui_file;
  23
  24 /* Create a generic ui_file object with null methods. */
  25
  26 extern struct ui_file *ui_file_new (void);
  27
  28 /* Override methods used by specific implementations of a UI_FILE
  29    object. */
  30
  31 typedef void (ui_file_flush_ftype) (struct ui_file * stream);
  32 extern void set_ui_file_flush (struct ui_file *stream, ui_file_flush_ftype * flush);
  33
  34 /* NOTE: Both fputs and write methods are available. Default
  35    implementations that mapping one onto the other are included. */
  36 typedef void (ui_file_write_ftype) (struct ui_file * stream, const char *buf, long length_buf);
  37 extern void set_ui_file_write (struct ui_file *stream, ui_file_write_ftype *fputs);
  38
  39 typedef void (ui_file_fputs_ftype) (const char *, struct ui_file * stream);
  40 extern void set_ui_file_fputs (struct ui_file *stream, ui_file_fputs_ftype * fputs);
  41
  42 typedef long (ui_file_read_ftype) (struct ui_file * stream, char *buf, long length_buf);
  43 extern void set_ui_file_read (struct ui_file *stream, ui_file_read_ftype *fread);
  44
  45 typedef int (ui_file_isatty_ftype) (struct ui_file * stream);
  46 extern void set_ui_file_isatty (struct ui_file *stream, ui_file_isatty_ftype * isatty);
  47
  48 typedef void (ui_file_rewind_ftype) (struct ui_file * stream);
  49 extern void set_ui_file_rewind (struct ui_file *stream, ui_file_rewind_ftype * rewind);
  50
  51 typedef void (ui_file_put_method_ftype) (void *object, const char *buffer, long length_buffer);
  52 typedef void (ui_file_put_ftype) (struct ui_file *stream, ui_file_put_method_ftype * method, void *context);
  53 extern void set_ui_file_put (struct ui_file *stream, ui_file_put_ftype * put);
  54
  55 typedef void (ui_file_delete_ftype) (struct ui_file * stream);
  56 extern void set_ui_file_data (struct ui_file *stream, void *data, ui_file_delete_ftype * delete);
  57
  58 extern void *ui_file_data (struct ui_file *file);
  59
  60
  61 extern void gdb_flush (struct ui_file *);
  62
  63 extern void ui_file_delete (struct ui_file *stream);
  64
  65 extern void ui_file_rewind (struct ui_file *stream);
  66
  67 extern int ui_file_isatty (struct ui_file *);
  68
  69 extern void ui_file_write (struct ui_file *file, const char *buf, long length_buf);
  70
  71 /* NOTE: copies left to right */
  72 extern void ui_file_put (struct ui_file *src, ui_file_put_method_ftype *write, void *dest);
  73
  74 /* Returns a freshly allocated buffer containing the entire contents
  75    of FILE (as determined by ui_file_put()) with a NUL character
  76    appended.  LENGTH, if not NULL, is set to the size of the buffer
  77    minus that appended NUL. */
  78 extern char *ui_file_xstrdup (struct ui_file *file, long *length);
  79
  80
  81
  82 extern long ui_file_read (struct ui_file *file, char *buf, long length_buf);
  83
  84 /* Create/open a memory based file. Can be used as a scratch buffer
  85    for collecting output. */
  86 extern struct ui_file *mem_fileopen (void);
  87
  88
  89
  90 /* Open/create a an STDIO based UI_FILE using the already open FILE. */
  91 extern struct ui_file *stdio_fileopen (FILE *file);
  92
  93 /* Open NAME returning an STDIO based UI_FILE. */
  94 extern struct ui_file *gdb_fopen (char *name, char *mode);
  95
  96 /* Create a file which writes to both ONE and TWO.  CLOSE_ONE
  97    and CLOSE_TWO indicate whether the original files should be
  98    closed when the new file is closed.  */
  99 struct ui_file *tee_file_new (struct ui_file *one,
 100                               int close_one,
 101                               struct ui_file *two,
 102                               int close_two);
 103 #endif