371 lines
11 KiB
C
371 lines
11 KiB
C
/* TUI display source window.
|
|
|
|
Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
|
|
Free Software Foundation, Inc.
|
|
|
|
Contributed by Hewlett-Packard Company.
|
|
|
|
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/>. */
|
|
|
|
#include "defs.h"
|
|
#include <ctype.h>
|
|
#include "symtab.h"
|
|
#include "frame.h"
|
|
#include "breakpoint.h"
|
|
#include "source.h"
|
|
#include "symtab.h"
|
|
|
|
#include "tui/tui.h"
|
|
#include "tui/tui-data.h"
|
|
#include "tui/tui-stack.h"
|
|
#include "tui/tui-winsource.h"
|
|
#include "tui/tui-source.h"
|
|
|
|
#include "gdb_string.h"
|
|
#include "gdb_curses.h"
|
|
|
|
/* Function to display source in the source window. */
|
|
enum tui_status
|
|
tui_set_source_content (struct symtab *s,
|
|
int line_no,
|
|
int noerror)
|
|
{
|
|
enum tui_status ret = TUI_FAILURE;
|
|
|
|
if (s != (struct symtab *) NULL && s->filename != (char *) NULL)
|
|
{
|
|
FILE *stream;
|
|
int i, desc, c, line_width, nlines;
|
|
char *src_line = 0;
|
|
|
|
if ((ret = tui_alloc_source_buffer (TUI_SRC_WIN)) == TUI_SUCCESS)
|
|
{
|
|
line_width = TUI_SRC_WIN->generic.width - 1;
|
|
/* Take hilite (window border) into account, when
|
|
calculating the number of lines. */
|
|
nlines = (line_no + (TUI_SRC_WIN->generic.height - 2)) - line_no;
|
|
desc = open_source_file (s);
|
|
if (desc < 0)
|
|
{
|
|
if (!noerror)
|
|
{
|
|
char *name = alloca (strlen (s->filename) + 100);
|
|
sprintf (name, "%s:%d", s->filename, line_no);
|
|
print_sys_errmsg (name, errno);
|
|
}
|
|
ret = TUI_FAILURE;
|
|
}
|
|
else
|
|
{
|
|
if (s->line_charpos == 0)
|
|
find_source_lines (s, desc);
|
|
|
|
if (line_no < 1 || line_no > s->nlines)
|
|
{
|
|
close (desc);
|
|
printf_unfiltered (
|
|
"Line number %d out of range; %s has %d lines.\n",
|
|
line_no, s->filename, s->nlines);
|
|
}
|
|
else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0)
|
|
{
|
|
close (desc);
|
|
perror_with_name (s->filename);
|
|
}
|
|
else
|
|
{
|
|
int offset, cur_line_no, cur_line, cur_len, threshold;
|
|
struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
|
|
struct tui_source_info *src = &TUI_SRC_WIN->detail.source_info;
|
|
|
|
if (TUI_SRC_WIN->generic.title)
|
|
xfree (TUI_SRC_WIN->generic.title);
|
|
TUI_SRC_WIN->generic.title = xstrdup (s->filename);
|
|
|
|
if (src->filename)
|
|
xfree (src->filename);
|
|
src->filename = xstrdup (s->filename);
|
|
|
|
/* Determine the threshold for the length of the
|
|
line and the offset to start the display. */
|
|
offset = src->horizontal_offset;
|
|
threshold = (line_width - 1) + offset;
|
|
stream = fdopen (desc, FOPEN_RT);
|
|
clearerr (stream);
|
|
cur_line = 0;
|
|
src->start_line_or_addr.loa = LOA_LINE;
|
|
cur_line_no = src->start_line_or_addr.u.line_no = line_no;
|
|
if (offset > 0)
|
|
src_line = (char *) xmalloc (
|
|
(threshold + 1) * sizeof (char));
|
|
while (cur_line < nlines)
|
|
{
|
|
struct tui_win_element *element = (struct tui_win_element *)
|
|
TUI_SRC_WIN->generic.content[cur_line];
|
|
|
|
/* Get the first character in the line. */
|
|
c = fgetc (stream);
|
|
|
|
if (offset == 0)
|
|
src_line = ((struct tui_win_element *)
|
|
TUI_SRC_WIN->generic.content[
|
|
cur_line])->which_element.source.line;
|
|
/* Init the line with the line number. */
|
|
sprintf (src_line, "%-6d", cur_line_no);
|
|
cur_len = strlen (src_line);
|
|
i = cur_len -
|
|
((cur_len / tui_default_tab_len ()) * tui_default_tab_len ());
|
|
while (i < tui_default_tab_len ())
|
|
{
|
|
src_line[cur_len] = ' ';
|
|
i++;
|
|
cur_len++;
|
|
}
|
|
src_line[cur_len] = (char) 0;
|
|
|
|
/* Set whether element is the execution point
|
|
and whether there is a break point on it. */
|
|
element->which_element.source.line_or_addr.loa =
|
|
LOA_LINE;
|
|
element->which_element.source.line_or_addr.u.line_no =
|
|
cur_line_no;
|
|
element->which_element.source.is_exec_point =
|
|
(strcmp (((struct tui_win_element *)
|
|
locator->content[0])->which_element.locator.file_name,
|
|
s->filename) == 0
|
|
&& cur_line_no == ((struct tui_win_element *)
|
|
locator->content[0])->which_element.locator.line_no);
|
|
if (c != EOF)
|
|
{
|
|
i = strlen (src_line) - 1;
|
|
do
|
|
{
|
|
if ((c != '\n') && (c != '\r')
|
|
&& (++i < threshold))
|
|
{
|
|
if (c < 040 && c != '\t')
|
|
{
|
|
src_line[i++] = '^';
|
|
src_line[i] = c + 0100;
|
|
}
|
|
else if (c == 0177)
|
|
{
|
|
src_line[i++] = '^';
|
|
src_line[i] = '?';
|
|
}
|
|
else
|
|
{ /* Store the charcter in the
|
|
line buffer. If it is a tab,
|
|
then translate to the correct
|
|
number of chars so we don't
|
|
overwrite our buffer. */
|
|
if (c == '\t')
|
|
{
|
|
int j, max_tab_len = tui_default_tab_len ();
|
|
|
|
for (j = i - ((i / max_tab_len) * max_tab_len);
|
|
j < max_tab_len
|
|
&& i < threshold;
|
|
i++, j++)
|
|
src_line[i] = ' ';
|
|
i--;
|
|
}
|
|
else
|
|
src_line[i] = c;
|
|
}
|
|
src_line[i + 1] = 0;
|
|
}
|
|
else
|
|
{ /* If we have not reached EOL, then
|
|
eat chars until we do. */
|
|
while (c != EOF && c != '\n' && c != '\r')
|
|
c = fgetc (stream);
|
|
/* Handle non-'\n' end-of-line. */
|
|
if (c == '\r'
|
|
&& (c = fgetc (stream)) != '\n'
|
|
&& c != EOF)
|
|
{
|
|
ungetc (c, stream);
|
|
c = '\r';
|
|
}
|
|
|
|
}
|
|
}
|
|
while (c != EOF && c != '\n' && c != '\r'
|
|
&& i < threshold
|
|
&& (c = fgetc (stream)));
|
|
}
|
|
/* Now copy the line taking the offset into
|
|
account. */
|
|
if (strlen (src_line) > offset)
|
|
strcpy (((struct tui_win_element *) TUI_SRC_WIN->generic.content[
|
|
cur_line])->which_element.source.line,
|
|
&src_line[offset]);
|
|
else
|
|
((struct tui_win_element *)
|
|
TUI_SRC_WIN->generic.content[
|
|
cur_line])->which_element.source.line[0] = (char) 0;
|
|
cur_line++;
|
|
cur_line_no++;
|
|
}
|
|
if (offset > 0)
|
|
xfree (src_line);
|
|
fclose (stream);
|
|
TUI_SRC_WIN->generic.content_size = nlines;
|
|
ret = TUI_SUCCESS;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* elz: This function sets the contents of the source window to empty
|
|
except for a line in the middle with a warning message about the
|
|
source not being available. This function is called by
|
|
tui_erase_source_contents(), which in turn is invoked when the
|
|
source files cannot be accessed. */
|
|
|
|
void
|
|
tui_set_source_content_nil (struct tui_win_info *win_info,
|
|
char *warning_string)
|
|
{
|
|
int line_width;
|
|
int n_lines;
|
|
int curr_line = 0;
|
|
|
|
line_width = win_info->generic.width - 1;
|
|
n_lines = win_info->generic.height - 2;
|
|
|
|
/* Set to empty each line in the window, except for the one which
|
|
contains the message. */
|
|
while (curr_line < win_info->generic.content_size)
|
|
{
|
|
/* Set the information related to each displayed line to null:
|
|
i.e. the line number is 0, there is no bp, it is not where
|
|
the program is stopped. */
|
|
|
|
struct tui_win_element *element =
|
|
(struct tui_win_element *) win_info->generic.content[curr_line];
|
|
element->which_element.source.line_or_addr.loa = LOA_LINE;
|
|
element->which_element.source.line_or_addr.u.line_no = 0;
|
|
element->which_element.source.is_exec_point = FALSE;
|
|
element->which_element.source.has_break = FALSE;
|
|
|
|
/* Set the contents of the line to blank. */
|
|
element->which_element.source.line[0] = (char) 0;
|
|
|
|
/* If the current line is in the middle of the screen, then we
|
|
want to display the 'no source available' message in it.
|
|
Note: the 'weird' arithmetic with the line width and height
|
|
comes from the function tui_erase_source_content(). We need
|
|
to keep the screen and the window's actual contents in
|
|
synch. */
|
|
|
|
if (curr_line == (n_lines / 2 + 1))
|
|
{
|
|
int i;
|
|
int xpos;
|
|
int warning_length = strlen (warning_string);
|
|
char *src_line;
|
|
|
|
src_line = element->which_element.source.line;
|
|
|
|
if (warning_length >= ((line_width - 1) / 2))
|
|
xpos = 1;
|
|
else
|
|
xpos = (line_width - 1) / 2 - warning_length;
|
|
|
|
for (i = 0; i < xpos; i++)
|
|
src_line[i] = ' ';
|
|
|
|
sprintf (src_line + i, "%s", warning_string);
|
|
|
|
for (i = xpos + warning_length; i < line_width; i++)
|
|
src_line[i] = ' ';
|
|
|
|
src_line[i] = '\n';
|
|
|
|
} /* end if */
|
|
|
|
curr_line++;
|
|
|
|
} /* end while */
|
|
}
|
|
|
|
|
|
/* Function to display source in the source window. This function
|
|
initializes the horizontal scroll to 0. */
|
|
void
|
|
tui_show_symtab_source (struct symtab *s,
|
|
struct tui_line_or_address line,
|
|
int noerror)
|
|
{
|
|
TUI_SRC_WIN->detail.source_info.horizontal_offset = 0;
|
|
tui_update_source_window_as_is (TUI_SRC_WIN, s, line, noerror);
|
|
}
|
|
|
|
|
|
/* Answer whether the source is currently displayed in the source
|
|
window. */
|
|
int
|
|
tui_source_is_displayed (char *fname)
|
|
{
|
|
return (TUI_SRC_WIN->generic.content_in_use
|
|
&& (strcmp (((struct tui_win_element *) (tui_locator_win_info_ptr ())->
|
|
content[0])->which_element.locator.file_name, fname) == 0));
|
|
}
|
|
|
|
|
|
/* Scroll the source forward or backward vertically. */
|
|
void
|
|
tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction,
|
|
int num_to_scroll)
|
|
{
|
|
if (TUI_SRC_WIN->generic.content != NULL)
|
|
{
|
|
struct tui_line_or_address l;
|
|
struct symtab *s;
|
|
tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content;
|
|
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
|
|
|
|
if (cursal.symtab == (struct symtab *) NULL)
|
|
s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
|
|
else
|
|
s = cursal.symtab;
|
|
|
|
l.loa = LOA_LINE;
|
|
if (scroll_direction == FORWARD_SCROLL)
|
|
{
|
|
l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no
|
|
+ num_to_scroll;
|
|
if (l.u.line_no > s->nlines)
|
|
/* line = s->nlines - win_info->generic.content_size + 1; */
|
|
/* elz: fix for dts 23398. */
|
|
l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no;
|
|
}
|
|
else
|
|
{
|
|
l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no
|
|
- num_to_scroll;
|
|
if (l.u.line_no <= 0)
|
|
l.u.line_no = 1;
|
|
}
|
|
|
|
print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0);
|
|
}
|
|
}
|