1 /* TUI display source window.
3 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
6 Contributed by Hewlett-Packard Company.
8 This file is part of GDB.
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 2 of the License, or
13 (at your option) any later version.
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.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
29 #include "breakpoint.h"
34 #include "tui/tui-data.h"
35 #include "tui/tui-stack.h"
36 #include "tui/tui-winsource.h"
37 #include "tui/tui-source.h"
39 #include "gdb_curses.h"
41 /* Function to display source in the source window. */
43 tui_set_source_content (struct symtab
*s
, int line_no
, int noerror
)
45 enum tui_status ret
= TUI_FAILURE
;
47 if (s
!= (struct symtab
*) NULL
&& s
->filename
!= (char *) NULL
)
50 int i
, desc
, c
, line_width
, nlines
;
53 if ((ret
= tui_alloc_source_buffer (TUI_SRC_WIN
)) == TUI_SUCCESS
)
55 line_width
= TUI_SRC_WIN
->generic
.width
- 1;
56 /* Take hilite (window border) into account, when calculating
57 the number of lines */
58 nlines
= (line_no
+ (TUI_SRC_WIN
->generic
.height
- 2)) - line_no
;
59 desc
= open_source_file (s
);
64 char *name
= alloca (strlen (s
->filename
) + 100);
65 sprintf (name
, "%s:%d", s
->filename
, line_no
);
66 print_sys_errmsg (name
, errno
);
72 if (s
->line_charpos
== 0)
73 find_source_lines (s
, desc
);
75 if (line_no
< 1 || line_no
> s
->nlines
)
79 "Line number %d out of range; %s has %d lines.\n",
80 line_no
, s
->filename
, s
->nlines
);
82 else if (lseek (desc
, s
->line_charpos
[line_no
- 1], 0) < 0)
85 perror_with_name (s
->filename
);
89 int offset
, cur_line_no
, cur_line
, cur_len
, threshold
;
90 struct tui_gen_win_info
* locator
= tui_locator_win_info_ptr ();
91 struct tui_source_info
* src
= &TUI_SRC_WIN
->detail
.source_info
;
93 if (TUI_SRC_WIN
->generic
.title
)
94 xfree (TUI_SRC_WIN
->generic
.title
);
95 TUI_SRC_WIN
->generic
.title
= xstrdup (s
->filename
);
98 xfree (src
->filename
);
99 src
->filename
= xstrdup (s
->filename
);
101 /* Determine the threshold for the length of the line
102 and the offset to start the display. */
103 offset
= src
->horizontal_offset
;
104 threshold
= (line_width
- 1) + offset
;
105 stream
= fdopen (desc
, FOPEN_RT
);
108 cur_line_no
= src
->start_line_or_addr
.line_no
= line_no
;
110 src_line
= (char *) xmalloc (
111 (threshold
+ 1) * sizeof (char));
112 while (cur_line
< nlines
)
114 struct tui_win_element
* element
= (struct tui_win_element
*)
115 TUI_SRC_WIN
->generic
.content
[cur_line
];
117 /* get the first character in the line */
121 src_line
= ((struct tui_win_element
*)
122 TUI_SRC_WIN
->generic
.content
[
123 cur_line
])->which_element
.source
.line
;
124 /* Init the line with the line number */
125 sprintf (src_line
, "%-6d", cur_line_no
);
126 cur_len
= strlen (src_line
);
128 ((cur_len
/ tui_default_tab_len ()) * tui_default_tab_len ());
129 while (i
< tui_default_tab_len ())
131 src_line
[cur_len
] = ' ';
135 src_line
[cur_len
] = (char) 0;
137 /* Set whether element is the execution point and
138 whether there is a break point on it. */
139 element
->which_element
.source
.line_or_addr
.line_no
=
141 element
->which_element
.source
.is_exec_point
=
142 (strcmp (((struct tui_win_element
*)
143 locator
->content
[0])->which_element
.locator
.file_name
,
145 && cur_line_no
== ((struct tui_win_element
*)
146 locator
->content
[0])->which_element
.locator
.line_no
);
149 i
= strlen (src_line
) - 1;
153 (c
!= '\r') && (++i
< threshold
))
155 if (c
< 040 && c
!= '\t')
158 src_line
[i
] = c
+ 0100;
166 { /* Store the charcter in the line
167 buffer. If it is a tab, then
168 translate to the correct number of
169 chars so we don't overwrite our
173 int j
, max_tab_len
= tui_default_tab_len ();
176 (i
/ max_tab_len
) * max_tab_len
);
177 ((j
< max_tab_len
) &&
189 { /* If we have not reached EOL, then eat
191 while (c
!= EOF
&& c
!= '\n' && c
!= '\r')
195 while (c
!= EOF
&& c
!= '\n' && c
!= '\r' &&
196 i
< threshold
&& (c
= fgetc (stream
)));
198 /* Now copy the line taking the offset into account */
199 if (strlen (src_line
) > offset
)
200 strcpy (((struct tui_win_element
*) TUI_SRC_WIN
->generic
.content
[
201 cur_line
])->which_element
.source
.line
,
204 ((struct tui_win_element
*)
205 TUI_SRC_WIN
->generic
.content
[
206 cur_line
])->which_element
.source
.line
[0] = (char) 0;
213 TUI_SRC_WIN
->generic
.content_size
= nlines
;
223 /* elz: this function sets the contents of the source window to empty
224 except for a line in the middle with a warning message about the
225 source not being available. This function is called by
226 tui_erase_source_contents(), which in turn is invoked when the
227 source files cannot be accessed. */
230 tui_set_source_content_nil (struct tui_win_info
* win_info
, char *warning_string
)
236 line_width
= win_info
->generic
.width
- 1;
237 n_lines
= win_info
->generic
.height
- 2;
239 /* set to empty each line in the window, except for the one
240 which contains the message */
241 while (curr_line
< win_info
->generic
.content_size
)
243 /* set the information related to each displayed line
244 to null: i.e. the line number is 0, there is no bp,
245 it is not where the program is stopped */
247 struct tui_win_element
* element
=
248 (struct tui_win_element
*) win_info
->generic
.content
[curr_line
];
249 element
->which_element
.source
.line_or_addr
.line_no
= 0;
250 element
->which_element
.source
.is_exec_point
= FALSE
;
251 element
->which_element
.source
.has_break
= FALSE
;
253 /* set the contents of the line to blank */
254 element
->which_element
.source
.line
[0] = (char) 0;
256 /* if the current line is in the middle of the screen, then we
257 want to display the 'no source available' message in it.
258 Note: the 'weird' arithmetic with the line width and height
259 comes from the function tui_erase_source_content(). We need
260 to keep the screen and the window's actual contents in synch. */
262 if (curr_line
== (n_lines
/ 2 + 1))
266 int warning_length
= strlen (warning_string
);
269 src_line
= element
->which_element
.source
.line
;
271 if (warning_length
>= ((line_width
- 1) / 2))
274 xpos
= (line_width
- 1) / 2 - warning_length
;
276 for (i
= 0; i
< xpos
; i
++)
279 sprintf (src_line
+ i
, "%s", warning_string
);
281 for (i
= xpos
+ warning_length
; i
< line_width
; i
++)
294 /* Function to display source in the source window. This function
295 initializes the horizontal scroll to 0. */
297 tui_show_symtab_source (struct symtab
*s
, union tui_line_or_address line
, int noerror
)
299 TUI_SRC_WIN
->detail
.source_info
.horizontal_offset
= 0;
300 tui_update_source_window_as_is (TUI_SRC_WIN
, s
, line
, noerror
);
304 /* Answer whether the source is currently displayed in the source
307 tui_source_is_displayed (char *fname
)
309 return (TUI_SRC_WIN
->generic
.content_in_use
&&
310 (strcmp (((struct tui_win_element
*) (tui_locator_win_info_ptr ())->
311 content
[0])->which_element
.locator
.file_name
, fname
) == 0));
315 /* Scroll the source forward or backward vertically. */
317 tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction
,
320 if (TUI_SRC_WIN
->generic
.content
!= NULL
)
322 union tui_line_or_address l
;
324 tui_win_content content
= (tui_win_content
) TUI_SRC_WIN
->generic
.content
;
325 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
327 if (cursal
.symtab
== (struct symtab
*) NULL
)
328 s
= find_pc_symtab (get_frame_pc (deprecated_selected_frame
));
332 if (scroll_direction
== FORWARD_SCROLL
)
334 l
.line_no
= content
[0]->which_element
.source
.line_or_addr
.line_no
+
336 if (l
.line_no
> s
->nlines
)
337 /*line = s->nlines - win_info->generic.content_size + 1; */
338 /*elz: fix for dts 23398 */
339 l
.line_no
= content
[0]->which_element
.source
.line_or_addr
.line_no
;
343 l
.line_no
= content
[0]->which_element
.source
.line_or_addr
.line_no
-
349 print_source_lines (s
, l
.line_no
, l
.line_no
+ 1, 0);