Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI display source window. |
f33c6cbf | 2 | |
ecd75fc8 | 3 | Copyright (C) 1998-2014 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" | |
c906108c | 37 | |
0e9f083f | 38 | #include <string.h> |
6a83354a | 39 | #include "gdb_curses.h" |
c906108c | 40 | |
98427f35 | 41 | /* Function to display source in the source window. */ |
a358af15 | 42 | enum tui_status |
08ef48c5 MS |
43 | tui_set_source_content (struct symtab *s, |
44 | int line_no, | |
45 | int noerror) | |
c906108c | 46 | { |
22940a24 | 47 | enum tui_status ret = TUI_FAILURE; |
c906108c | 48 | |
4e04028d | 49 | if (s != (struct symtab *) NULL) |
c906108c | 50 | { |
d02c80cd AC |
51 | FILE *stream; |
52 | int i, desc, c, line_width, nlines; | |
53 | char *src_line = 0; | |
c906108c | 54 | |
6d012f14 | 55 | if ((ret = tui_alloc_source_buffer (TUI_SRC_WIN)) == TUI_SUCCESS) |
c906108c | 56 | { |
6ba8e26f | 57 | line_width = TUI_SRC_WIN->generic.width - 1; |
1cc6d956 MS |
58 | /* Take hilite (window border) into account, when |
59 | calculating the number of lines. */ | |
6d012f14 | 60 | nlines = (line_no + (TUI_SRC_WIN->generic.height - 2)) - line_no; |
c906108c SS |
61 | desc = open_source_file (s); |
62 | if (desc < 0) | |
63 | { | |
64 | if (!noerror) | |
65 | { | |
05cba821 JK |
66 | const char *filename = symtab_to_filename_for_display (s); |
67 | char *name = alloca (strlen (filename) + 100); | |
1c5313c5 | 68 | |
05cba821 | 69 | sprintf (name, "%s:%d", filename, line_no); |
c906108c SS |
70 | print_sys_errmsg (name, errno); |
71 | } | |
72 | ret = TUI_FAILURE; | |
73 | } | |
74 | else | |
75 | { | |
76 | if (s->line_charpos == 0) | |
77 | find_source_lines (s, desc); | |
78 | ||
6d012f14 | 79 | if (line_no < 1 || line_no > s->nlines) |
c906108c SS |
80 | { |
81 | close (desc); | |
05cba821 JK |
82 | printf_unfiltered ("Line number %d out of range; " |
83 | "%s has %d lines.\n", | |
84 | line_no, | |
85 | symtab_to_filename_for_display (s), | |
86 | s->nlines); | |
c906108c | 87 | } |
6d012f14 | 88 | else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0) |
c906108c SS |
89 | { |
90 | close (desc); | |
05cba821 | 91 | perror_with_name (symtab_to_filename_for_display (s)); |
c906108c SS |
92 | } |
93 | else | |
94 | { | |
d02c80cd | 95 | int offset, cur_line_no, cur_line, cur_len, threshold; |
9a2b4c1b MS |
96 | struct tui_gen_win_info *locator |
97 | = tui_locator_win_info_ptr (); | |
98 | struct tui_source_info *src | |
99 | = &TUI_SRC_WIN->detail.source_info; | |
05cba821 | 100 | const char *s_filename = symtab_to_filename_for_display (s); |
bc6b7f04 | 101 | |
6d012f14 AC |
102 | if (TUI_SRC_WIN->generic.title) |
103 | xfree (TUI_SRC_WIN->generic.title); | |
05cba821 | 104 | TUI_SRC_WIN->generic.title = xstrdup (s_filename); |
bc6b7f04 | 105 | |
aa079c93 JK |
106 | xfree (src->fullname); |
107 | src->fullname = xstrdup (symtab_to_fullname (s)); | |
bc6b7f04 | 108 | |
1cc6d956 MS |
109 | /* Determine the threshold for the length of the |
110 | line and the offset to start the display. */ | |
6d012f14 | 111 | offset = src->horizontal_offset; |
6ba8e26f | 112 | threshold = (line_width - 1) + offset; |
c906108c SS |
113 | stream = fdopen (desc, FOPEN_RT); |
114 | clearerr (stream); | |
6ba8e26f | 115 | cur_line = 0; |
13274fc3 | 116 | src->gdbarch = get_objfile_arch (s->objfile); |
362c05fe AS |
117 | src->start_line_or_addr.loa = LOA_LINE; |
118 | cur_line_no = src->start_line_or_addr.u.line_no = line_no; | |
c906108c | 119 | if (offset > 0) |
6ba8e26f | 120 | src_line = (char *) xmalloc ( |
c906108c | 121 | (threshold + 1) * sizeof (char)); |
6ba8e26f | 122 | while (cur_line < nlines) |
c906108c | 123 | { |
9a2b4c1b MS |
124 | struct tui_win_element *element |
125 | = (struct tui_win_element *) | |
1c5313c5 | 126 | TUI_SRC_WIN->generic.content[cur_line]; |
c906108c | 127 | |
1cc6d956 | 128 | /* Get the first character in the line. */ |
c906108c SS |
129 | c = fgetc (stream); |
130 | ||
131 | if (offset == 0) | |
6ba8e26f | 132 | src_line = ((struct tui_win_element *) |
6d012f14 | 133 | TUI_SRC_WIN->generic.content[ |
6ba8e26f | 134 | cur_line])->which_element.source.line; |
1cc6d956 | 135 | /* Init the line with the line number. */ |
6ba8e26f AC |
136 | sprintf (src_line, "%-6d", cur_line_no); |
137 | cur_len = strlen (src_line); | |
9a2b4c1b MS |
138 | i = cur_len - ((cur_len / tui_default_tab_len ()) |
139 | * tui_default_tab_len ()); | |
dd1abb8c | 140 | while (i < tui_default_tab_len ()) |
c906108c | 141 | { |
6ba8e26f | 142 | src_line[cur_len] = ' '; |
c906108c | 143 | i++; |
6ba8e26f | 144 | cur_len++; |
c906108c | 145 | } |
6ba8e26f | 146 | src_line[cur_len] = (char) 0; |
c906108c | 147 | |
1cc6d956 MS |
148 | /* Set whether element is the execution point |
149 | and whether there is a break point on it. */ | |
362c05fe AS |
150 | element->which_element.source.line_or_addr.loa = |
151 | LOA_LINE; | |
152 | element->which_element.source.line_or_addr.u.line_no = | |
6ba8e26f | 153 | cur_line_no; |
6d012f14 | 154 | element->which_element.source.is_exec_point = |
a7417d46 | 155 | (filename_cmp (((struct tui_win_element *) |
56d397a3 JK |
156 | locator->content[0])->which_element.locator.full_name, |
157 | symtab_to_fullname (s)) == 0 | |
6ba8e26f | 158 | && cur_line_no == ((struct tui_win_element *) |
e5908723 | 159 | locator->content[0])->which_element.locator.line_no); |
c906108c SS |
160 | if (c != EOF) |
161 | { | |
6ba8e26f | 162 | i = strlen (src_line) - 1; |
c906108c SS |
163 | do |
164 | { | |
e5908723 MS |
165 | if ((c != '\n') && (c != '\r') |
166 | && (++i < threshold)) | |
c906108c SS |
167 | { |
168 | if (c < 040 && c != '\t') | |
169 | { | |
6ba8e26f AC |
170 | src_line[i++] = '^'; |
171 | src_line[i] = c + 0100; | |
c906108c SS |
172 | } |
173 | else if (c == 0177) | |
174 | { | |
6ba8e26f AC |
175 | src_line[i++] = '^'; |
176 | src_line[i] = '?'; | |
c906108c SS |
177 | } |
178 | else | |
1cc6d956 MS |
179 | { /* Store the charcter in the |
180 | line buffer. If it is a tab, | |
181 | then translate to the correct | |
182 | number of chars so we don't | |
183 | overwrite our buffer. */ | |
c906108c SS |
184 | if (c == '\t') |
185 | { | |
9a2b4c1b MS |
186 | int j, max_tab_len |
187 | = tui_default_tab_len (); | |
c906108c | 188 | |
9a2b4c1b MS |
189 | for (j = i - ((i / max_tab_len) |
190 | * max_tab_len); | |
e5908723 MS |
191 | j < max_tab_len |
192 | && i < threshold; | |
c906108c | 193 | i++, j++) |
6ba8e26f | 194 | src_line[i] = ' '; |
c906108c SS |
195 | i--; |
196 | } | |
197 | else | |
6ba8e26f | 198 | src_line[i] = c; |
c906108c | 199 | } |
6ba8e26f | 200 | src_line[i + 1] = 0; |
c906108c SS |
201 | } |
202 | else | |
1cc6d956 MS |
203 | { /* If we have not reached EOL, then |
204 | eat chars until we do. */ | |
c906108c SS |
205 | while (c != EOF && c != '\n' && c != '\r') |
206 | c = fgetc (stream); | |
861cf606 | 207 | /* Handle non-'\n' end-of-line. */ |
e5908723 MS |
208 | if (c == '\r' |
209 | && (c = fgetc (stream)) != '\n' | |
210 | && c != EOF) | |
861cf606 FR |
211 | { |
212 | ungetc (c, stream); | |
213 | c = '\r'; | |
214 | } | |
215 | ||
c906108c SS |
216 | } |
217 | } | |
e5908723 MS |
218 | while (c != EOF && c != '\n' && c != '\r' |
219 | && i < threshold | |
220 | && (c = fgetc (stream))); | |
c906108c | 221 | } |
1cc6d956 MS |
222 | /* Now copy the line taking the offset into |
223 | account. */ | |
6ba8e26f | 224 | if (strlen (src_line) > offset) |
9a2b4c1b MS |
225 | strcpy (((struct tui_win_element *) |
226 | TUI_SRC_WIN->generic.content[cur_line])->which_element.source.line, | |
6ba8e26f | 227 | &src_line[offset]); |
c906108c | 228 | else |
2a8854a7 | 229 | ((struct tui_win_element *) |
6d012f14 | 230 | TUI_SRC_WIN->generic.content[ |
6ba8e26f AC |
231 | cur_line])->which_element.source.line[0] = (char) 0; |
232 | cur_line++; | |
233 | cur_line_no++; | |
c906108c SS |
234 | } |
235 | if (offset > 0) | |
6ba8e26f | 236 | xfree (src_line); |
c906108c | 237 | fclose (stream); |
6d012f14 | 238 | TUI_SRC_WIN->generic.content_size = nlines; |
c906108c SS |
239 | ret = TUI_SUCCESS; |
240 | } | |
241 | } | |
242 | } | |
243 | } | |
244 | return ret; | |
98427f35 | 245 | } |
c906108c SS |
246 | |
247 | ||
1cc6d956 | 248 | /* elz: This function sets the contents of the source window to empty |
c906108c | 249 | except for a line in the middle with a warning message about the |
1cc6d956 | 250 | source not being available. This function is called by |
6ba8e26f AC |
251 | tui_erase_source_contents(), which in turn is invoked when the |
252 | source files cannot be accessed. */ | |
c906108c SS |
253 | |
254 | void | |
08ef48c5 MS |
255 | tui_set_source_content_nil (struct tui_win_info *win_info, |
256 | char *warning_string) | |
c906108c | 257 | { |
6ba8e26f AC |
258 | int line_width; |
259 | int n_lines; | |
c906108c SS |
260 | int curr_line = 0; |
261 | ||
6ba8e26f AC |
262 | line_width = win_info->generic.width - 1; |
263 | n_lines = win_info->generic.height - 2; | |
c906108c | 264 | |
1cc6d956 MS |
265 | /* Set to empty each line in the window, except for the one which |
266 | contains the message. */ | |
6ba8e26f | 267 | while (curr_line < win_info->generic.content_size) |
c906108c | 268 | { |
1cc6d956 MS |
269 | /* Set the information related to each displayed line to null: |
270 | i.e. the line number is 0, there is no bp, it is not where | |
271 | the program is stopped. */ | |
c906108c | 272 | |
5b6fe301 MS |
273 | struct tui_win_element *element = |
274 | (struct tui_win_element *) win_info->generic.content[curr_line]; | |
1c5313c5 | 275 | |
362c05fe AS |
276 | element->which_element.source.line_or_addr.loa = LOA_LINE; |
277 | element->which_element.source.line_or_addr.u.line_no = 0; | |
6d012f14 AC |
278 | element->which_element.source.is_exec_point = FALSE; |
279 | element->which_element.source.has_break = FALSE; | |
c906108c | 280 | |
1cc6d956 | 281 | /* Set the contents of the line to blank. */ |
6d012f14 | 282 | element->which_element.source.line[0] = (char) 0; |
c906108c | 283 | |
1cc6d956 | 284 | /* If the current line is in the middle of the screen, then we |
6ba8e26f AC |
285 | want to display the 'no source available' message in it. |
286 | Note: the 'weird' arithmetic with the line width and height | |
1cc6d956 MS |
287 | comes from the function tui_erase_source_content(). We need |
288 | to keep the screen and the window's actual contents in | |
289 | synch. */ | |
c906108c | 290 | |
6ba8e26f | 291 | if (curr_line == (n_lines / 2 + 1)) |
c906108c SS |
292 | { |
293 | int i; | |
294 | int xpos; | |
295 | int warning_length = strlen (warning_string); | |
6ba8e26f | 296 | char *src_line; |
c906108c | 297 | |
6ba8e26f | 298 | src_line = element->which_element.source.line; |
c906108c | 299 | |
6ba8e26f | 300 | if (warning_length >= ((line_width - 1) / 2)) |
c906108c SS |
301 | xpos = 1; |
302 | else | |
6ba8e26f | 303 | xpos = (line_width - 1) / 2 - warning_length; |
c906108c SS |
304 | |
305 | for (i = 0; i < xpos; i++) | |
6ba8e26f | 306 | src_line[i] = ' '; |
c906108c | 307 | |
6ba8e26f | 308 | sprintf (src_line + i, "%s", warning_string); |
c906108c | 309 | |
6ba8e26f AC |
310 | for (i = xpos + warning_length; i < line_width; i++) |
311 | src_line[i] = ' '; | |
c906108c | 312 | |
6ba8e26f | 313 | src_line[i] = '\n'; |
c906108c SS |
314 | |
315 | } /* end if */ | |
316 | ||
317 | curr_line++; | |
318 | ||
c5aa993b | 319 | } /* end while */ |
98427f35 | 320 | } |
c906108c SS |
321 | |
322 | ||
98427f35 SC |
323 | /* Function to display source in the source window. This function |
324 | initializes the horizontal scroll to 0. */ | |
c906108c | 325 | void |
13274fc3 | 326 | tui_show_symtab_source (struct gdbarch *gdbarch, struct symtab *s, |
08ef48c5 MS |
327 | struct tui_line_or_address line, |
328 | int noerror) | |
c906108c | 329 | { |
6d012f14 | 330 | TUI_SRC_WIN->detail.source_info.horizontal_offset = 0; |
13274fc3 | 331 | tui_update_source_window_as_is (TUI_SRC_WIN, gdbarch, s, line, noerror); |
98427f35 | 332 | } |
c906108c | 333 | |
c906108c | 334 | |
a358af15 AC |
335 | /* Answer whether the source is currently displayed in the source |
336 | window. */ | |
c906108c | 337 | int |
56d397a3 | 338 | tui_source_is_displayed (const char *fullname) |
c906108c | 339 | { |
f629cd75 L |
340 | return (TUI_SRC_WIN != NULL |
341 | && TUI_SRC_WIN->generic.content_in_use | |
a7417d46 KT |
342 | && (filename_cmp (((struct tui_win_element *) |
343 | (tui_locator_win_info_ptr ())-> | |
56d397a3 JK |
344 | content[0])->which_element.locator.full_name, |
345 | fullname) == 0)); | |
98427f35 | 346 | } |
c906108c SS |
347 | |
348 | ||
98427f35 | 349 | /* Scroll the source forward or backward vertically. */ |
c906108c | 350 | void |
6ba8e26f AC |
351 | tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction, |
352 | int num_to_scroll) | |
c906108c | 353 | { |
6d012f14 | 354 | if (TUI_SRC_WIN->generic.content != NULL) |
c906108c | 355 | { |
362c05fe | 356 | struct tui_line_or_address l; |
c906108c | 357 | struct symtab *s; |
6d012f14 | 358 | tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content; |
52575520 | 359 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 360 | |
52575520 | 361 | if (cursal.symtab == (struct symtab *) NULL) |
206415a3 | 362 | s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL))); |
c906108c | 363 | else |
52575520 | 364 | s = cursal.symtab; |
c906108c | 365 | |
362c05fe | 366 | l.loa = LOA_LINE; |
6ba8e26f | 367 | if (scroll_direction == FORWARD_SCROLL) |
c906108c | 368 | { |
362c05fe AS |
369 | l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no |
370 | + num_to_scroll; | |
371 | if (l.u.line_no > s->nlines) | |
1cc6d956 MS |
372 | /* line = s->nlines - win_info->generic.content_size + 1; */ |
373 | /* elz: fix for dts 23398. */ | |
9a2b4c1b MS |
374 | l.u.line_no |
375 | = content[0]->which_element.source.line_or_addr.u.line_no; | |
c906108c SS |
376 | } |
377 | else | |
378 | { | |
362c05fe AS |
379 | l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no |
380 | - num_to_scroll; | |
381 | if (l.u.line_no <= 0) | |
382 | l.u.line_no = 1; | |
c906108c | 383 | } |
27229e99 | 384 | |
362c05fe | 385 | print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0); |
c906108c | 386 | } |
98427f35 | 387 | } |