Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI display source window. |
f33c6cbf | 2 | |
a358af15 AC |
3 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software |
4 | Foundation, Inc. | |
f33c6cbf | 5 | |
f377b406 SC |
6 | Contributed by Hewlett-Packard Company. |
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 2 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, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.h" | |
26 | #include <ctype.h> | |
27 | #include "symtab.h" | |
28 | #include "frame.h" | |
29 | #include "breakpoint.h" | |
c2c6d25f | 30 | #include "source.h" |
a4b99e53 | 31 | #include "symtab.h" |
c906108c | 32 | |
d7b2e967 AC |
33 | #include "tui/tui.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" | |
c906108c | 38 | |
96ec9981 DJ |
39 | #ifdef HAVE_NCURSES_H |
40 | #include <ncurses.h> | |
41 | #else | |
42 | #ifdef HAVE_CURSES_H | |
43 | #include <curses.h> | |
44 | #endif | |
45 | #endif | |
c906108c | 46 | |
98427f35 | 47 | /* Function to display source in the source window. */ |
a358af15 | 48 | enum tui_status |
6d012f14 | 49 | tui_set_source_content (struct symtab *s, int line_no, int noerror) |
c906108c | 50 | { |
22940a24 | 51 | enum tui_status ret = TUI_FAILURE; |
c906108c SS |
52 | |
53 | if (s != (struct symtab *) NULL && s->filename != (char *) NULL) | |
54 | { | |
d02c80cd AC |
55 | FILE *stream; |
56 | int i, desc, c, line_width, nlines; | |
57 | char *src_line = 0; | |
c906108c | 58 | |
6d012f14 | 59 | if ((ret = tui_alloc_source_buffer (TUI_SRC_WIN)) == TUI_SUCCESS) |
c906108c | 60 | { |
6ba8e26f | 61 | line_width = TUI_SRC_WIN->generic.width - 1; |
98427f35 SC |
62 | /* Take hilite (window border) into account, when calculating |
63 | the number of lines */ | |
6d012f14 | 64 | nlines = (line_no + (TUI_SRC_WIN->generic.height - 2)) - line_no; |
c906108c SS |
65 | desc = open_source_file (s); |
66 | if (desc < 0) | |
67 | { | |
68 | if (!noerror) | |
69 | { | |
70 | char *name = alloca (strlen (s->filename) + 100); | |
6d012f14 | 71 | sprintf (name, "%s:%d", s->filename, line_no); |
c906108c SS |
72 | print_sys_errmsg (name, errno); |
73 | } | |
74 | ret = TUI_FAILURE; | |
75 | } | |
76 | else | |
77 | { | |
78 | if (s->line_charpos == 0) | |
79 | find_source_lines (s, desc); | |
80 | ||
6d012f14 | 81 | if (line_no < 1 || line_no > s->nlines) |
c906108c SS |
82 | { |
83 | close (desc); | |
84 | printf_unfiltered ( | |
85 | "Line number %d out of range; %s has %d lines.\n", | |
6d012f14 | 86 | line_no, s->filename, s->nlines); |
c906108c | 87 | } |
6d012f14 | 88 | else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0) |
c906108c SS |
89 | { |
90 | close (desc); | |
91 | perror_with_name (s->filename); | |
92 | } | |
93 | else | |
94 | { | |
d02c80cd | 95 | int offset, cur_line_no, cur_line, cur_len, threshold; |
2a8854a7 | 96 | struct tui_gen_win_info * locator = tui_locator_win_info_ptr (); |
6d012f14 | 97 | struct tui_source_info * src = &TUI_SRC_WIN->detail.source_info; |
bc6b7f04 | 98 | |
6d012f14 AC |
99 | if (TUI_SRC_WIN->generic.title) |
100 | xfree (TUI_SRC_WIN->generic.title); | |
101 | TUI_SRC_WIN->generic.title = xstrdup (s->filename); | |
bc6b7f04 SC |
102 | |
103 | if (src->filename) | |
104 | xfree (src->filename); | |
105 | src->filename = xstrdup (s->filename); | |
106 | ||
107 | /* Determine the threshold for the length of the line | |
108 | and the offset to start the display. */ | |
6d012f14 | 109 | offset = src->horizontal_offset; |
6ba8e26f | 110 | threshold = (line_width - 1) + offset; |
c906108c SS |
111 | stream = fdopen (desc, FOPEN_RT); |
112 | clearerr (stream); | |
6ba8e26f AC |
113 | cur_line = 0; |
114 | cur_line_no = src->start_line_or_addr.line_no = line_no; | |
c906108c | 115 | if (offset > 0) |
6ba8e26f | 116 | src_line = (char *) xmalloc ( |
c906108c | 117 | (threshold + 1) * sizeof (char)); |
6ba8e26f | 118 | while (cur_line < nlines) |
c906108c | 119 | { |
2a8854a7 | 120 | struct tui_win_element * element = (struct tui_win_element *) |
6ba8e26f | 121 | TUI_SRC_WIN->generic.content[cur_line]; |
c906108c SS |
122 | |
123 | /* get the first character in the line */ | |
124 | c = fgetc (stream); | |
125 | ||
126 | if (offset == 0) | |
6ba8e26f | 127 | src_line = ((struct tui_win_element *) |
6d012f14 | 128 | TUI_SRC_WIN->generic.content[ |
6ba8e26f | 129 | cur_line])->which_element.source.line; |
c906108c | 130 | /* Init the line with the line number */ |
6ba8e26f AC |
131 | sprintf (src_line, "%-6d", cur_line_no); |
132 | cur_len = strlen (src_line); | |
133 | i = cur_len - | |
134 | ((cur_len / tui_default_tab_len ()) * tui_default_tab_len ()); | |
dd1abb8c | 135 | while (i < tui_default_tab_len ()) |
c906108c | 136 | { |
6ba8e26f | 137 | src_line[cur_len] = ' '; |
c906108c | 138 | i++; |
6ba8e26f | 139 | cur_len++; |
c906108c | 140 | } |
6ba8e26f | 141 | src_line[cur_len] = (char) 0; |
c906108c | 142 | |
98427f35 SC |
143 | /* Set whether element is the execution point and |
144 | whether there is a break point on it. */ | |
6d012f14 | 145 | element->which_element.source.line_or_addr.line_no = |
6ba8e26f | 146 | cur_line_no; |
6d012f14 | 147 | element->which_element.source.is_exec_point = |
2a8854a7 | 148 | (strcmp (((struct tui_win_element *) |
6d012f14 | 149 | locator->content[0])->which_element.locator.file_name, |
c906108c | 150 | s->filename) == 0 |
6ba8e26f | 151 | && cur_line_no == ((struct tui_win_element *) |
6d012f14 | 152 | locator->content[0])->which_element.locator.line_no); |
c906108c SS |
153 | if (c != EOF) |
154 | { | |
6ba8e26f | 155 | i = strlen (src_line) - 1; |
c906108c SS |
156 | do |
157 | { | |
158 | if ((c != '\n') && | |
159 | (c != '\r') && (++i < threshold)) | |
160 | { | |
161 | if (c < 040 && c != '\t') | |
162 | { | |
6ba8e26f AC |
163 | src_line[i++] = '^'; |
164 | src_line[i] = c + 0100; | |
c906108c SS |
165 | } |
166 | else if (c == 0177) | |
167 | { | |
6ba8e26f AC |
168 | src_line[i++] = '^'; |
169 | src_line[i] = '?'; | |
c906108c SS |
170 | } |
171 | else | |
98427f35 SC |
172 | { /* Store the charcter in the line |
173 | buffer. If it is a tab, then | |
174 | translate to the correct number of | |
175 | chars so we don't overwrite our | |
176 | buffer. */ | |
c906108c SS |
177 | if (c == '\t') |
178 | { | |
6ba8e26f | 179 | int j, max_tab_len = tui_default_tab_len (); |
c906108c SS |
180 | |
181 | for (j = i - ( | |
6ba8e26f AC |
182 | (i / max_tab_len) * max_tab_len); |
183 | ((j < max_tab_len) && | |
c906108c SS |
184 | i < threshold); |
185 | i++, j++) | |
6ba8e26f | 186 | src_line[i] = ' '; |
c906108c SS |
187 | i--; |
188 | } | |
189 | else | |
6ba8e26f | 190 | src_line[i] = c; |
c906108c | 191 | } |
6ba8e26f | 192 | src_line[i + 1] = 0; |
c906108c SS |
193 | } |
194 | else | |
98427f35 SC |
195 | { /* If we have not reached EOL, then eat |
196 | chars until we do */ | |
c906108c SS |
197 | while (c != EOF && c != '\n' && c != '\r') |
198 | c = fgetc (stream); | |
199 | } | |
200 | } | |
201 | while (c != EOF && c != '\n' && c != '\r' && | |
202 | i < threshold && (c = fgetc (stream))); | |
203 | } | |
204 | /* Now copy the line taking the offset into account */ | |
6ba8e26f | 205 | if (strlen (src_line) > offset) |
6d012f14 | 206 | strcpy (((struct tui_win_element *) TUI_SRC_WIN->generic.content[ |
6ba8e26f AC |
207 | cur_line])->which_element.source.line, |
208 | &src_line[offset]); | |
c906108c | 209 | else |
2a8854a7 | 210 | ((struct tui_win_element *) |
6d012f14 | 211 | TUI_SRC_WIN->generic.content[ |
6ba8e26f AC |
212 | cur_line])->which_element.source.line[0] = (char) 0; |
213 | cur_line++; | |
214 | cur_line_no++; | |
c906108c SS |
215 | } |
216 | if (offset > 0) | |
6ba8e26f | 217 | xfree (src_line); |
c906108c | 218 | fclose (stream); |
6d012f14 | 219 | TUI_SRC_WIN->generic.content_size = nlines; |
c906108c SS |
220 | ret = TUI_SUCCESS; |
221 | } | |
222 | } | |
223 | } | |
224 | } | |
225 | return ret; | |
98427f35 | 226 | } |
c906108c SS |
227 | |
228 | ||
229 | /* elz: this function sets the contents of the source window to empty | |
230 | except for a line in the middle with a warning message about the | |
231 | source not being available. This function is called by | |
6ba8e26f AC |
232 | tui_erase_source_contents(), which in turn is invoked when the |
233 | source files cannot be accessed. */ | |
c906108c SS |
234 | |
235 | void | |
6ba8e26f | 236 | tui_set_source_content_nil (struct tui_win_info * win_info, char *warning_string) |
c906108c | 237 | { |
6ba8e26f AC |
238 | int line_width; |
239 | int n_lines; | |
c906108c SS |
240 | int curr_line = 0; |
241 | ||
6ba8e26f AC |
242 | line_width = win_info->generic.width - 1; |
243 | n_lines = win_info->generic.height - 2; | |
c906108c SS |
244 | |
245 | /* set to empty each line in the window, except for the one | |
c5aa993b | 246 | which contains the message */ |
6ba8e26f | 247 | while (curr_line < win_info->generic.content_size) |
c906108c SS |
248 | { |
249 | /* set the information related to each displayed line | |
c5aa993b JM |
250 | to null: i.e. the line number is 0, there is no bp, |
251 | it is not where the program is stopped */ | |
c906108c | 252 | |
2a8854a7 | 253 | struct tui_win_element * element = |
6ba8e26f | 254 | (struct tui_win_element *) win_info->generic.content[curr_line]; |
6d012f14 AC |
255 | element->which_element.source.line_or_addr.line_no = 0; |
256 | element->which_element.source.is_exec_point = FALSE; | |
257 | element->which_element.source.has_break = FALSE; | |
c906108c | 258 | |
c5aa993b | 259 | /* set the contents of the line to blank */ |
6d012f14 | 260 | element->which_element.source.line[0] = (char) 0; |
c906108c | 261 | |
6ba8e26f AC |
262 | /* if the current line is in the middle of the screen, then we |
263 | want to display the 'no source available' message in it. | |
264 | Note: the 'weird' arithmetic with the line width and height | |
265 | comes from the function tui_erase_source_content(). We need | |
266 | to keep the screen and the window's actual contents in synch. */ | |
c906108c | 267 | |
6ba8e26f | 268 | if (curr_line == (n_lines / 2 + 1)) |
c906108c SS |
269 | { |
270 | int i; | |
271 | int xpos; | |
272 | int warning_length = strlen (warning_string); | |
6ba8e26f | 273 | char *src_line; |
c906108c | 274 | |
6ba8e26f | 275 | src_line = element->which_element.source.line; |
c906108c | 276 | |
6ba8e26f | 277 | if (warning_length >= ((line_width - 1) / 2)) |
c906108c SS |
278 | xpos = 1; |
279 | else | |
6ba8e26f | 280 | xpos = (line_width - 1) / 2 - warning_length; |
c906108c SS |
281 | |
282 | for (i = 0; i < xpos; i++) | |
6ba8e26f | 283 | src_line[i] = ' '; |
c906108c | 284 | |
6ba8e26f | 285 | sprintf (src_line + i, "%s", warning_string); |
c906108c | 286 | |
6ba8e26f AC |
287 | for (i = xpos + warning_length; i < line_width; i++) |
288 | src_line[i] = ' '; | |
c906108c | 289 | |
6ba8e26f | 290 | src_line[i] = '\n'; |
c906108c SS |
291 | |
292 | } /* end if */ | |
293 | ||
294 | curr_line++; | |
295 | ||
c5aa993b | 296 | } /* end while */ |
98427f35 | 297 | } |
c906108c SS |
298 | |
299 | ||
98427f35 SC |
300 | /* Function to display source in the source window. This function |
301 | initializes the horizontal scroll to 0. */ | |
c906108c | 302 | void |
2a8854a7 | 303 | tui_show_symtab_source (struct symtab *s, union tui_line_or_address line, int noerror) |
c906108c | 304 | { |
6d012f14 AC |
305 | TUI_SRC_WIN->detail.source_info.horizontal_offset = 0; |
306 | tui_update_source_window_as_is (TUI_SRC_WIN, s, line, noerror); | |
98427f35 | 307 | } |
c906108c | 308 | |
c906108c | 309 | |
a358af15 AC |
310 | /* Answer whether the source is currently displayed in the source |
311 | window. */ | |
c906108c | 312 | int |
a358af15 | 313 | tui_source_is_displayed (char *fname) |
c906108c | 314 | { |
6d012f14 | 315 | return (TUI_SRC_WIN->generic.content_in_use && |
2a8854a7 | 316 | (strcmp (((struct tui_win_element *) (tui_locator_win_info_ptr ())-> |
6d012f14 | 317 | content[0])->which_element.locator.file_name, fname) == 0)); |
98427f35 | 318 | } |
c906108c SS |
319 | |
320 | ||
98427f35 | 321 | /* Scroll the source forward or backward vertically. */ |
c906108c | 322 | void |
6ba8e26f AC |
323 | tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction, |
324 | int num_to_scroll) | |
c906108c | 325 | { |
6d012f14 | 326 | if (TUI_SRC_WIN->generic.content != NULL) |
c906108c | 327 | { |
2a8854a7 | 328 | union tui_line_or_address l; |
c906108c | 329 | struct symtab *s; |
6d012f14 | 330 | tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content; |
52575520 | 331 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 332 | |
52575520 | 333 | if (cursal.symtab == (struct symtab *) NULL) |
f70a7d61 | 334 | s = find_pc_symtab (get_frame_pc (deprecated_selected_frame)); |
c906108c | 335 | else |
52575520 | 336 | s = cursal.symtab; |
c906108c | 337 | |
6ba8e26f | 338 | if (scroll_direction == FORWARD_SCROLL) |
c906108c | 339 | { |
6d012f14 | 340 | l.line_no = content[0]->which_element.source.line_or_addr.line_no + |
6ba8e26f | 341 | num_to_scroll; |
6d012f14 | 342 | if (l.line_no > s->nlines) |
6ba8e26f | 343 | /*line = s->nlines - win_info->generic.content_size + 1; */ |
c5aa993b | 344 | /*elz: fix for dts 23398 */ |
6d012f14 | 345 | l.line_no = content[0]->which_element.source.line_or_addr.line_no; |
c906108c SS |
346 | } |
347 | else | |
348 | { | |
6d012f14 | 349 | l.line_no = content[0]->which_element.source.line_or_addr.line_no - |
6ba8e26f | 350 | num_to_scroll; |
6d012f14 AC |
351 | if (l.line_no <= 0) |
352 | l.line_no = 1; | |
c906108c | 353 | } |
27229e99 | 354 | |
6d012f14 | 355 | print_source_lines (s, l.line_no, l.line_no + 1, 0); |
c906108c | 356 | } |
98427f35 | 357 | } |