Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI display source window. |
f33c6cbf | 2 | |
32d0add0 | 3 | Copyright (C) 1998-2015 Free Software Foundation, Inc. |
f33c6cbf | 4 | |
f377b406 SC |
5 | Contributed by Hewlett-Packard Company. |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
f377b406 SC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
c2c6d25f | 27 | #include "source.h" |
a4b99e53 | 28 | #include "symtab.h" |
13274fc3 | 29 | #include "objfiles.h" |
a7417d46 | 30 | #include "filenames.h" |
c906108c | 31 | |
d7b2e967 AC |
32 | #include "tui/tui.h" |
33 | #include "tui/tui-data.h" | |
34 | #include "tui/tui-stack.h" | |
35 | #include "tui/tui-winsource.h" | |
36 | #include "tui/tui-source.h" | |
6a83354a | 37 | #include "gdb_curses.h" |
c906108c | 38 | |
98427f35 | 39 | /* Function to display source in the source window. */ |
a358af15 | 40 | enum tui_status |
08ef48c5 MS |
41 | tui_set_source_content (struct symtab *s, |
42 | int line_no, | |
43 | int noerror) | |
c906108c | 44 | { |
22940a24 | 45 | enum tui_status ret = TUI_FAILURE; |
c906108c | 46 | |
4e04028d | 47 | if (s != (struct symtab *) NULL) |
c906108c | 48 | { |
d02c80cd AC |
49 | FILE *stream; |
50 | int i, desc, c, line_width, nlines; | |
51 | char *src_line = 0; | |
c906108c | 52 | |
6d012f14 | 53 | if ((ret = tui_alloc_source_buffer (TUI_SRC_WIN)) == TUI_SUCCESS) |
c906108c | 54 | { |
6ba8e26f | 55 | line_width = TUI_SRC_WIN->generic.width - 1; |
1cc6d956 MS |
56 | /* Take hilite (window border) into account, when |
57 | calculating the number of lines. */ | |
6d012f14 | 58 | nlines = (line_no + (TUI_SRC_WIN->generic.height - 2)) - line_no; |
c906108c SS |
59 | desc = open_source_file (s); |
60 | if (desc < 0) | |
61 | { | |
62 | if (!noerror) | |
63 | { | |
05cba821 | 64 | const char *filename = symtab_to_filename_for_display (s); |
224c3ddb | 65 | char *name = (char *) alloca (strlen (filename) + 100); |
1c5313c5 | 66 | |
05cba821 | 67 | sprintf (name, "%s:%d", filename, line_no); |
c906108c SS |
68 | print_sys_errmsg (name, errno); |
69 | } | |
70 | ret = TUI_FAILURE; | |
71 | } | |
72 | else | |
73 | { | |
74 | if (s->line_charpos == 0) | |
75 | find_source_lines (s, desc); | |
76 | ||
6d012f14 | 77 | if (line_no < 1 || line_no > s->nlines) |
c906108c SS |
78 | { |
79 | close (desc); | |
05cba821 JK |
80 | printf_unfiltered ("Line number %d out of range; " |
81 | "%s has %d lines.\n", | |
82 | line_no, | |
83 | symtab_to_filename_for_display (s), | |
84 | s->nlines); | |
c906108c | 85 | } |
6d012f14 | 86 | else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0) |
c906108c SS |
87 | { |
88 | close (desc); | |
05cba821 | 89 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
90 | } |
91 | else | |
92 | { | |
d02c80cd | 93 | int offset, cur_line_no, cur_line, cur_len, threshold; |
9a2b4c1b MS |
94 | struct tui_gen_win_info *locator |
95 | = tui_locator_win_info_ptr (); | |
96 | struct tui_source_info *src | |
97 | = &TUI_SRC_WIN->detail.source_info; | |
05cba821 | 98 | const char *s_filename = symtab_to_filename_for_display (s); |
bc6b7f04 | 99 | |
6d012f14 AC |
100 | if (TUI_SRC_WIN->generic.title) |
101 | xfree (TUI_SRC_WIN->generic.title); | |
05cba821 | 102 | TUI_SRC_WIN->generic.title = xstrdup (s_filename); |
bc6b7f04 | 103 | |
aa079c93 JK |
104 | xfree (src->fullname); |
105 | src->fullname = xstrdup (symtab_to_fullname (s)); | |
bc6b7f04 | 106 | |
1cc6d956 MS |
107 | /* Determine the threshold for the length of the |
108 | line 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 | 113 | cur_line = 0; |
eb822aa6 | 114 | src->gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s)); |
362c05fe AS |
115 | src->start_line_or_addr.loa = LOA_LINE; |
116 | cur_line_no = src->start_line_or_addr.u.line_no = line_no; | |
c906108c | 117 | if (offset > 0) |
6ba8e26f | 118 | src_line = (char *) xmalloc ( |
c906108c | 119 | (threshold + 1) * sizeof (char)); |
6ba8e26f | 120 | while (cur_line < nlines) |
c906108c | 121 | { |
9a2b4c1b | 122 | struct tui_win_element *element |
63ed8182 | 123 | = TUI_SRC_WIN->generic.content[cur_line]; |
c906108c | 124 | |
1cc6d956 | 125 | /* Get the first character in the line. */ |
c906108c SS |
126 | c = fgetc (stream); |
127 | ||
128 | if (offset == 0) | |
63ed8182 PP |
129 | src_line = TUI_SRC_WIN->generic.content[cur_line] |
130 | ->which_element.source.line; | |
1cc6d956 | 131 | /* Init the line with the line number. */ |
6ba8e26f AC |
132 | sprintf (src_line, "%-6d", cur_line_no); |
133 | cur_len = strlen (src_line); | |
9a2b4c1b MS |
134 | i = cur_len - ((cur_len / tui_default_tab_len ()) |
135 | * tui_default_tab_len ()); | |
dd1abb8c | 136 | while (i < tui_default_tab_len ()) |
c906108c | 137 | { |
6ba8e26f | 138 | src_line[cur_len] = ' '; |
c906108c | 139 | i++; |
6ba8e26f | 140 | cur_len++; |
c906108c | 141 | } |
6ba8e26f | 142 | src_line[cur_len] = (char) 0; |
c906108c | 143 | |
1cc6d956 MS |
144 | /* Set whether element is the execution point |
145 | and whether there is a break point on it. */ | |
362c05fe AS |
146 | element->which_element.source.line_or_addr.loa = |
147 | LOA_LINE; | |
148 | element->which_element.source.line_or_addr.u.line_no = | |
6ba8e26f | 149 | cur_line_no; |
6d012f14 | 150 | element->which_element.source.is_exec_point = |
63ed8182 PP |
151 | (filename_cmp (locator->content[0] |
152 | ->which_element.locator.full_name, | |
56d397a3 | 153 | symtab_to_fullname (s)) == 0 |
63ed8182 PP |
154 | && cur_line_no |
155 | == locator->content[0] | |
156 | ->which_element.locator.line_no); | |
c906108c SS |
157 | if (c != EOF) |
158 | { | |
6ba8e26f | 159 | i = strlen (src_line) - 1; |
c906108c SS |
160 | do |
161 | { | |
e5908723 MS |
162 | if ((c != '\n') && (c != '\r') |
163 | && (++i < threshold)) | |
c906108c SS |
164 | { |
165 | if (c < 040 && c != '\t') | |
166 | { | |
6ba8e26f AC |
167 | src_line[i++] = '^'; |
168 | src_line[i] = c + 0100; | |
c906108c SS |
169 | } |
170 | else if (c == 0177) | |
171 | { | |
6ba8e26f AC |
172 | src_line[i++] = '^'; |
173 | src_line[i] = '?'; | |
c906108c SS |
174 | } |
175 | else | |
1cc6d956 MS |
176 | { /* Store the charcter in the |
177 | line buffer. If it is a tab, | |
178 | then translate to the correct | |
179 | number of chars so we don't | |
180 | overwrite our buffer. */ | |
c906108c SS |
181 | if (c == '\t') |
182 | { | |
9a2b4c1b MS |
183 | int j, max_tab_len |
184 | = tui_default_tab_len (); | |
c906108c | 185 | |
9a2b4c1b MS |
186 | for (j = i - ((i / max_tab_len) |
187 | * max_tab_len); | |
e5908723 MS |
188 | j < max_tab_len |
189 | && i < threshold; | |
c906108c | 190 | i++, j++) |
6ba8e26f | 191 | src_line[i] = ' '; |
c906108c SS |
192 | i--; |
193 | } | |
194 | else | |
6ba8e26f | 195 | src_line[i] = c; |
c906108c | 196 | } |
6ba8e26f | 197 | src_line[i + 1] = 0; |
c906108c SS |
198 | } |
199 | else | |
1cc6d956 MS |
200 | { /* If we have not reached EOL, then |
201 | eat chars until we do. */ | |
c906108c SS |
202 | while (c != EOF && c != '\n' && c != '\r') |
203 | c = fgetc (stream); | |
861cf606 | 204 | /* Handle non-'\n' end-of-line. */ |
e5908723 MS |
205 | if (c == '\r' |
206 | && (c = fgetc (stream)) != '\n' | |
207 | && c != EOF) | |
861cf606 FR |
208 | { |
209 | ungetc (c, stream); | |
210 | c = '\r'; | |
211 | } | |
212 | ||
c906108c SS |
213 | } |
214 | } | |
e5908723 MS |
215 | while (c != EOF && c != '\n' && c != '\r' |
216 | && i < threshold | |
217 | && (c = fgetc (stream))); | |
c906108c | 218 | } |
1cc6d956 MS |
219 | /* Now copy the line taking the offset into |
220 | account. */ | |
2eb639cb PP |
221 | if (offset == 0) |
222 | ; | |
223 | else if (strlen (src_line) > offset) | |
63ed8182 PP |
224 | strcpy (TUI_SRC_WIN->generic.content[cur_line] |
225 | ->which_element.source.line, | |
6ba8e26f | 226 | &src_line[offset]); |
c906108c | 227 | else |
63ed8182 PP |
228 | TUI_SRC_WIN->generic.content[cur_line] |
229 | ->which_element.source.line[0] = (char) 0; | |
6ba8e26f AC |
230 | cur_line++; |
231 | cur_line_no++; | |
c906108c SS |
232 | } |
233 | if (offset > 0) | |
6ba8e26f | 234 | xfree (src_line); |
c906108c | 235 | fclose (stream); |
6d012f14 | 236 | TUI_SRC_WIN->generic.content_size = nlines; |
c906108c SS |
237 | ret = TUI_SUCCESS; |
238 | } | |
239 | } | |
240 | } | |
241 | } | |
242 | return ret; | |
98427f35 | 243 | } |
c906108c SS |
244 | |
245 | ||
1cc6d956 | 246 | /* elz: This function sets the contents of the source window to empty |
c906108c | 247 | except for a line in the middle with a warning message about the |
1cc6d956 | 248 | source not being available. This function is called by |
6ba8e26f AC |
249 | tui_erase_source_contents(), which in turn is invoked when the |
250 | source files cannot be accessed. */ | |
c906108c SS |
251 | |
252 | void | |
08ef48c5 MS |
253 | tui_set_source_content_nil (struct tui_win_info *win_info, |
254 | char *warning_string) | |
c906108c | 255 | { |
6ba8e26f AC |
256 | int line_width; |
257 | int n_lines; | |
c906108c SS |
258 | int curr_line = 0; |
259 | ||
6ba8e26f AC |
260 | line_width = win_info->generic.width - 1; |
261 | n_lines = win_info->generic.height - 2; | |
c906108c | 262 | |
1cc6d956 MS |
263 | /* Set to empty each line in the window, except for the one which |
264 | contains the message. */ | |
6ba8e26f | 265 | while (curr_line < win_info->generic.content_size) |
c906108c | 266 | { |
1cc6d956 MS |
267 | /* Set the information related to each displayed line to null: |
268 | i.e. the line number is 0, there is no bp, it is not where | |
269 | the program is stopped. */ | |
c906108c | 270 | |
63ed8182 | 271 | struct tui_win_element *element = win_info->generic.content[curr_line]; |
1c5313c5 | 272 | |
362c05fe AS |
273 | element->which_element.source.line_or_addr.loa = LOA_LINE; |
274 | element->which_element.source.line_or_addr.u.line_no = 0; | |
6d012f14 AC |
275 | element->which_element.source.is_exec_point = FALSE; |
276 | element->which_element.source.has_break = FALSE; | |
c906108c | 277 | |
1cc6d956 | 278 | /* Set the contents of the line to blank. */ |
6d012f14 | 279 | element->which_element.source.line[0] = (char) 0; |
c906108c | 280 | |
1cc6d956 | 281 | /* If the current line is in the middle of the screen, then we |
6ba8e26f AC |
282 | want to display the 'no source available' message in it. |
283 | Note: the 'weird' arithmetic with the line width and height | |
1cc6d956 MS |
284 | comes from the function tui_erase_source_content(). We need |
285 | to keep the screen and the window's actual contents in | |
286 | synch. */ | |
c906108c | 287 | |
6ba8e26f | 288 | if (curr_line == (n_lines / 2 + 1)) |
c906108c SS |
289 | { |
290 | int i; | |
291 | int xpos; | |
292 | int warning_length = strlen (warning_string); | |
6ba8e26f | 293 | char *src_line; |
c906108c | 294 | |
6ba8e26f | 295 | src_line = element->which_element.source.line; |
c906108c | 296 | |
6ba8e26f | 297 | if (warning_length >= ((line_width - 1) / 2)) |
c906108c SS |
298 | xpos = 1; |
299 | else | |
6ba8e26f | 300 | xpos = (line_width - 1) / 2 - warning_length; |
c906108c SS |
301 | |
302 | for (i = 0; i < xpos; i++) | |
6ba8e26f | 303 | src_line[i] = ' '; |
c906108c | 304 | |
6ba8e26f | 305 | sprintf (src_line + i, "%s", warning_string); |
c906108c | 306 | |
6ba8e26f AC |
307 | for (i = xpos + warning_length; i < line_width; i++) |
308 | src_line[i] = ' '; | |
c906108c | 309 | |
6ba8e26f | 310 | src_line[i] = '\n'; |
c906108c SS |
311 | |
312 | } /* end if */ | |
313 | ||
314 | curr_line++; | |
315 | ||
c5aa993b | 316 | } /* end while */ |
98427f35 | 317 | } |
c906108c SS |
318 | |
319 | ||
98427f35 SC |
320 | /* Function to display source in the source window. This function |
321 | initializes the horizontal scroll to 0. */ | |
c906108c | 322 | void |
13274fc3 | 323 | tui_show_symtab_source (struct gdbarch *gdbarch, struct symtab *s, |
08ef48c5 MS |
324 | struct tui_line_or_address line, |
325 | int noerror) | |
c906108c | 326 | { |
6d012f14 | 327 | TUI_SRC_WIN->detail.source_info.horizontal_offset = 0; |
13274fc3 | 328 | tui_update_source_window_as_is (TUI_SRC_WIN, gdbarch, s, line, noerror); |
98427f35 | 329 | } |
c906108c | 330 | |
c906108c | 331 | |
a358af15 AC |
332 | /* Answer whether the source is currently displayed in the source |
333 | window. */ | |
c906108c | 334 | int |
56d397a3 | 335 | tui_source_is_displayed (const char *fullname) |
c906108c | 336 | { |
f629cd75 L |
337 | return (TUI_SRC_WIN != NULL |
338 | && TUI_SRC_WIN->generic.content_in_use | |
63ed8182 PP |
339 | && (filename_cmp (tui_locator_win_info_ptr ()->content[0] |
340 | ->which_element.locator.full_name, | |
56d397a3 | 341 | fullname) == 0)); |
98427f35 | 342 | } |
c906108c SS |
343 | |
344 | ||
98427f35 | 345 | /* Scroll the source forward or backward vertically. */ |
c906108c | 346 | void |
6ba8e26f AC |
347 | tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction, |
348 | int num_to_scroll) | |
c906108c | 349 | { |
6d012f14 | 350 | if (TUI_SRC_WIN->generic.content != NULL) |
c906108c | 351 | { |
362c05fe | 352 | struct tui_line_or_address l; |
c906108c | 353 | struct symtab *s; |
6d012f14 | 354 | tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content; |
52575520 | 355 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 356 | |
52575520 | 357 | if (cursal.symtab == (struct symtab *) NULL) |
34248c3a | 358 | s = find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 359 | else |
52575520 | 360 | s = cursal.symtab; |
c906108c | 361 | |
362c05fe | 362 | l.loa = LOA_LINE; |
6ba8e26f | 363 | if (scroll_direction == FORWARD_SCROLL) |
c906108c | 364 | { |
362c05fe AS |
365 | l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no |
366 | + num_to_scroll; | |
367 | if (l.u.line_no > s->nlines) | |
1cc6d956 MS |
368 | /* line = s->nlines - win_info->generic.content_size + 1; */ |
369 | /* elz: fix for dts 23398. */ | |
9a2b4c1b MS |
370 | l.u.line_no |
371 | = content[0]->which_element.source.line_or_addr.u.line_no; | |
c906108c SS |
372 | } |
373 | else | |
374 | { | |
362c05fe AS |
375 | l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no |
376 | - num_to_scroll; | |
377 | if (l.u.line_no <= 0) | |
378 | l.u.line_no = 1; | |
c906108c | 379 | } |
27229e99 | 380 | |
362c05fe | 381 | print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0); |
c906108c | 382 | } |
98427f35 | 383 | } |