gdb/tui/tui-out.c

   1 /* Output generating routines for GDB CLI.
   2
   3    Copyright (C) 1999-2013 Free Software Foundation, Inc.
   4
   5    Contributed by Cygnus Solutions.
   6    Written by Fernando Nasser for Cygnus.
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  22
  23 #include "defs.h"
  24 #include "ui-out.h"
  25 #include "cli-out.h"
  26 #include "tui.h"
  27 #include "gdb_string.h"
  28 #include "gdb_assert.h"
  29
  30 struct tui_ui_out_data
  31   {
  32     struct cli_ui_out_data base;
  33
  34     int line;
  35     int start_of_line;
  36   };
  37 typedef struct tui_ui_out_data tui_out_data;
  38
  39 /* This is the TUI ui-out implementation functions vector.  It is
  40    initialized below in _initialize_tui_out, inheriting the CLI
  41    version, and overriding a few methods.  */
  42
  43 static struct ui_out_impl tui_ui_out_impl;
  44
  45 /* Output an int field.  */
  46
  47 static void
  48 tui_field_int (struct ui_out *uiout,
  49                int fldno, int width,
  50                enum ui_align alignment,
  51                const char *fldname,
  52                int value)
  53 {
  54   tui_out_data *data = ui_out_data (uiout);
  55
  56   if (data->base.suppress_output)
  57     return;
  58
  59   /* Don't print line number, keep it for later.  */
  60   if (data->start_of_line == 0 && strcmp (fldname, "line") == 0)
  61     {
  62       data->start_of_line ++;
  63       data->line = value;
  64       return;
  65     }
  66   data->start_of_line ++;
  67
  68   (*cli_ui_out_impl.field_int) (uiout, fldno,
  69                                 width, alignment, fldname, value);
  70 }
  71
  72 /* Other cli_field_* end up here so alignment and field separators are
  73    both handled by tui_field_string.  */
  74
  75 static void
  76 tui_field_string (struct ui_out *uiout,
  77                   int fldno, int width,
  78                   enum ui_align align,
  79                   const char *fldname,
  80                   const char *string)
  81 {
  82   tui_out_data *data = ui_out_data (uiout);
  83
  84   if (data->base.suppress_output)
  85     return;
  86
  87   if (fldname && data->line > 0 && strcmp (fldname, "file") == 0)
  88     {
  89       data->start_of_line ++;
  90       if (data->line > 0)
  91         {
  92           tui_show_source (string, data->line);
  93         }
  94       return;
  95     }
  96
  97   data->start_of_line++;
  98
  99   (*cli_ui_out_impl.field_string) (uiout, fldno,
 100                                    width, align,
 101                                    fldname, string);
 102 }
 103
 104 /* This is the only field function that does not align.  */
 105
 106 static void
 107 tui_field_fmt (struct ui_out *uiout, int fldno,
 108                int width, enum ui_align align,
 109                const char *fldname,
 110                const char *format,
 111                va_list args)
 112 {
 113   tui_out_data *data = ui_out_data (uiout);
 114
 115   if (data->base.suppress_output)
 116     return;
 117
 118   data->start_of_line++;
 119
 120   (*cli_ui_out_impl.field_fmt) (uiout, fldno,
 121                                 width, align,
 122                                 fldname, format, args);
 123 }
 124
 125 static void
 126 tui_text (struct ui_out *uiout, const char *string)
 127 {
 128   tui_out_data *data = ui_out_data (uiout);
 129
 130   if (data->base.suppress_output)
 131     return;
 132   data->start_of_line ++;
 133   if (data->line > 0)
 134     {
 135       if (strchr (string, '\n') != 0)
 136         {
 137           data->line = -1;
 138           data->start_of_line = 0;
 139         }
 140       return;
 141     }
 142   if (strchr (string, '\n'))
 143     data->start_of_line = 0;
 144
 145   (*cli_ui_out_impl.text) (uiout, string);
 146 }
 147
 148 struct ui_out *
 149 tui_out_new (struct ui_file *stream)
 150 {
 151   int flags = 0;
 152
 153   tui_out_data *data = XMALLOC (tui_out_data);
 154
 155   /* Initialize base "class".  */
 156   cli_out_data_ctor (&data->base, stream);
 157
 158   /* Initialize our fields.  */
 159   data->line = -1;
 160   data->start_of_line = 0;
 161
 162   return ui_out_new (&tui_ui_out_impl, data, flags);
 163 }
 164
 165 /* Standard gdb initialization hook.  */
 166
 167 extern void _initialize_tui_out (void);
 168
 169 void
 170 _initialize_tui_out (void)
 171 {
 172   /* Inherit the CLI version.  */
 173   tui_ui_out_impl = cli_ui_out_impl;
 174
 175   /* Override a few methods.  */
 176   tui_ui_out_impl.field_int = tui_field_int;
 177   tui_ui_out_impl.field_string = tui_field_string;
 178   tui_ui_out_impl.field_fmt = tui_field_fmt;
 179   tui_ui_out_impl.text = tui_text;
 180 }