- 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)
- {
- 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,
- symtab_to_filename_for_display (s),
- s->nlines);
- }
- else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0)
- {
- close (desc);
- perror_with_name (symtab_to_filename_for_display (s));
- }
- 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;
- 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));
-
- /* 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->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;
- if (offset > 0)
- src_line = (char *) xmalloc (
- (threshold + 1) * sizeof (char));
- while (cur_line < nlines)
- {
- struct tui_win_element *element
- = TUI_SRC_WIN->generic.content[cur_line];
-
- /* Get the first character in the line. */
- c = fgetc (stream);
-
- if (offset == 0)
- src_line = 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 =
- (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);
- 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 (offset == 0)
- ;
- else if (strlen (src_line) > offset)
- strcpy (TUI_SRC_WIN->generic.content[cur_line]
- ->which_element.source.line,
- &src_line[offset]);
- else
- 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;
-}