/* TUI display source window.
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1998-2019 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include <ctype.h>
#include "frame.h"
#include "breakpoint.h"
#include "source.h"
-#include "symtab.h"
+#include "objfiles.h"
+#include "filenames.h"
+#include "source-cache.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
+#include "tui/tui-io.h"
#include "tui/tui-stack.h"
#include "tui/tui-winsource.h"
#include "tui/tui-source.h"
-
-#include "gdb_string.h"
#include "gdb_curses.h"
+/* A helper function for tui_set_source_content that extracts some
+ source text from PTR. LINE_NO is the line number; FIRST_COL is the
+ first column to extract, and LINE_WIDTH is the number of characters
+ to display. Returns a string holding the desired text. */
+
+static std::string
+copy_source_line (const char **ptr, int line_no, int first_col,
+ int line_width)
+{
+ const char *lineptr = *ptr;
+
+ /* Init the line with the line number. */
+ std::string result = string_printf ("%-6d", line_no);
+ int len = result.size ();
+ len = len - ((len / tui_tab_width) * tui_tab_width);
+ result.append (len, ' ');
+
+ int column = 0;
+ char c;
+ do
+ {
+ int skip_bytes;
+
+ c = *lineptr;
+ if (c == '\033' && skip_ansi_escape (lineptr, &skip_bytes))
+ {
+ /* We always have to preserve escapes. */
+ result.append (lineptr, lineptr + skip_bytes);
+ lineptr += skip_bytes;
+ continue;
+ }
+
+ ++lineptr;
+ ++column;
+
+ auto process_tab = [&] ()
+ {
+ int max_tab_len = tui_tab_width;
+
+ --column;
+ for (int j = column % max_tab_len;
+ j < max_tab_len && column < first_col + line_width;
+ column++, j++)
+ if (column >= first_col)
+ result.push_back (' ');
+ };
+
+ /* We have to process all the text in order to pick up all the
+ escapes. */
+ if (column <= first_col || column > first_col + line_width)
+ {
+ if (c == '\t')
+ process_tab ();
+ continue;
+ }
+
+ if (c == '\n' || c == '\r' || c == '\0')
+ {
+ /* Nothing. */
+ }
+ else if (c < 040 && c != '\t')
+ {
+ result.push_back ('^');
+ result.push_back (c + 0100);
+ }
+ else if (c == 0177)
+ {
+ result.push_back ('^');
+ result.push_back ('?');
+ }
+ else if (c == '\t')
+ process_tab ();
+ else
+ result.push_back (c);
+ }
+ while (c != '\0' && c != '\n' && c != '\r');
+
+ if (c == '\r' && *lineptr == '\n')
+ ++lineptr;
+ *ptr = lineptr;
+
+ return result;
+}
+
/* Function to display source in the source window. */
enum tui_status
-tui_set_source_content (struct symtab *s, int line_no, int noerror)
+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)
+ if (s != NULL)
{
- FILE *stream;
- int i, desc, c, line_width, nlines;
- char *src_line = 0;
+ int line_width, nlines;
if ((ret = tui_alloc_source_buffer (TUI_SRC_WIN)) == TUI_SUCCESS)
{
/* 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)
+
+ std::string srclines;
+ if (!g_source_cache.get_source_lines (s, line_no, line_no + nlines,
+ &srclines))
{
if (!noerror)
{
- char *name = alloca (strlen (s->filename) + 100);
- sprintf (name, "%s:%d", s->filename, line_no);
+ const char *filename = symtab_to_filename_for_display (s);
+ char *name = (char *) alloca (strlen (filename) + 100);
+
+ sprintf (name, "%s:%d", 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)
+ int cur_line_no, cur_line;
+ struct tui_gen_win_info *locator
+ = tui_locator_win_info_ptr ();
+ struct tui_source_window_base *src
+ = (struct tui_source_window_base *) TUI_SRC_WIN;
+ const char *s_filename = symtab_to_filename_for_display (s);
+
+ if (TUI_SRC_WIN->generic.title)
+ xfree (TUI_SRC_WIN->generic.title);
+ TUI_SRC_WIN->generic.title = xstrdup (s_filename);
+
+ xfree (src->fullname);
+ src->fullname = xstrdup (symtab_to_fullname (s));
+
+ cur_line = 0;
+ src->gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s));
+ src->start_line_or_addr.loa = LOA_LINE;
+ cur_line_no = src->start_line_or_addr.u.line_no = line_no;
+
+ const char *iter = srclines.c_str ();
+ while (cur_line < nlines)
{
- 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;
+ struct tui_win_element *element
+ = TUI_SRC_WIN->generic.content[cur_line];
+
+ std::string text;
+ if (*iter != '\0')
+ text = copy_source_line (&iter, cur_line_no,
+ src->horizontal_offset,
+ line_width);
+
+ /* 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 =
+ (filename_cmp (locator->content[0]
+ ->which_element.locator.full_name,
+ symtab_to_fullname (s)) == 0
+ && cur_line_no
+ == locator->content[0]
+ ->which_element.locator.line_no);
+
+ xfree (TUI_SRC_WIN->generic.content[cur_line]
+ ->which_element.source.line);
+ TUI_SRC_WIN->generic.content[cur_line]
+ ->which_element.source.line
+ = xstrdup (text.c_str ());
+
+ cur_line++;
+ cur_line_no++;
}
+ TUI_SRC_WIN->generic.content_size = nlines;
+ ret = TUI_SUCCESS;
}
}
}
source files cannot be accessed. */
void
-tui_set_source_content_nil (struct tui_win_info *win_info, char *warning_string)
+tui_set_source_content_nil (struct tui_win_info *win_info,
+ const char *warning_string)
{
int line_width;
int n_lines;
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];
+ struct tui_win_element *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;
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 */
+ src_line = xstrprintf ("%s%s", n_spaces (xpos), warning_string);
+ xfree (element->which_element.source.line);
+ element->which_element.source.line = src_line;
+ }
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_show_symtab_source (struct gdbarch *gdbarch, 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);
+ TUI_SRC_WIN->horizontal_offset = 0;
+ tui_update_source_window_as_is (TUI_SRC_WIN, gdbarch, s, line, noerror);
}
/* Answer whether the source is currently displayed in the source
window. */
int
-tui_source_is_displayed (char *fname)
+tui_source_is_displayed (const char *fullname)
{
- 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));
+ return (TUI_SRC_WIN != NULL
+ && TUI_SRC_WIN->generic.content_in_use
+ && (filename_cmp (tui_locator_win_info_ptr ()->content[0]
+ ->which_element.locator.full_name,
+ fullname) == 0));
}
/* Scroll the source forward or backward vertically. */
void
-tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction,
- int num_to_scroll)
+tui_source_window::do_scroll_vertical
+ (enum tui_scroll_direction scroll_direction, int num_to_scroll)
{
- if (TUI_SRC_WIN->generic.content != NULL)
+ if (generic.content != NULL)
{
struct tui_line_or_address l;
struct symtab *s;
- tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content;
+ tui_win_content content = 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)));
+ if (cursal.symtab == NULL)
+ s = find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL)));
else
s = cursal.symtab;
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;
+ l.u.line_no
+ = content[0]->which_element.source.line_or_addr.u.line_no;
}
else
{