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 | |
6a83354a | 39 | #include "gdb_curses.h" |
c906108c | 40 | |
98427f35 | 41 | /* Function to display source in the source window. */ |
a358af15 | 42 | enum tui_status |
6d012f14 | 43 | tui_set_source_content (struct symtab *s, int line_no, int noerror) |
c906108c | 44 | { |
22940a24 | 45 | enum tui_status ret = TUI_FAILURE; |
c906108c SS |
46 | |
47 | if (s != (struct symtab *) NULL && s->filename != (char *) NULL) | |
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; |
98427f35 SC |
56 | /* Take hilite (window border) into account, when calculating |
57 | 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 | { | |
64 | char *name = alloca (strlen (s->filename) + 100); | |
6d012f14 | 65 | sprintf (name, "%s:%d", s->filename, line_no); |
c906108c SS |
66 | print_sys_errmsg (name, errno); |
67 | } | |
68 | ret = TUI_FAILURE; | |
69 | } | |
70 | else | |
71 | { | |
72 | if (s->line_charpos == 0) | |
73 | find_source_lines (s, desc); | |
74 | ||
6d012f14 | 75 | if (line_no < 1 || line_no > s->nlines) |
c906108c SS |
76 | { |
77 | close (desc); | |
78 | printf_unfiltered ( | |
79 | "Line number %d out of range; %s has %d lines.\n", | |
6d012f14 | 80 | line_no, s->filename, s->nlines); |
c906108c | 81 | } |
6d012f14 | 82 | else if (lseek (desc, s->line_charpos[line_no - 1], 0) < 0) |
c906108c SS |
83 | { |
84 | close (desc); | |
85 | perror_with_name (s->filename); | |
86 | } | |
87 | else | |
88 | { | |
d02c80cd | 89 | int offset, cur_line_no, cur_line, cur_len, threshold; |
2a8854a7 | 90 | struct tui_gen_win_info * locator = tui_locator_win_info_ptr (); |
6d012f14 | 91 | struct tui_source_info * src = &TUI_SRC_WIN->detail.source_info; |
bc6b7f04 | 92 | |
6d012f14 AC |
93 | if (TUI_SRC_WIN->generic.title) |
94 | xfree (TUI_SRC_WIN->generic.title); | |
95 | TUI_SRC_WIN->generic.title = xstrdup (s->filename); | |
bc6b7f04 SC |
96 | |
97 | if (src->filename) | |
98 | xfree (src->filename); | |
99 | src->filename = xstrdup (s->filename); | |
100 | ||
101 | /* Determine the threshold for the length of the line | |
102 | and the offset to start the display. */ | |
6d012f14 | 103 | offset = src->horizontal_offset; |
6ba8e26f | 104 | threshold = (line_width - 1) + offset; |
c906108c SS |
105 | stream = fdopen (desc, FOPEN_RT); |
106 | clearerr (stream); | |
6ba8e26f AC |
107 | cur_line = 0; |
108 | cur_line_no = src->start_line_or_addr.line_no = line_no; | |
c906108c | 109 | if (offset > 0) |
6ba8e26f | 110 | src_line = (char *) xmalloc ( |
c906108c | 111 | (threshold + 1) * sizeof (char)); |
6ba8e26f | 112 | while (cur_line < nlines) |
c906108c | 113 | { |
2a8854a7 | 114 | struct tui_win_element * element = (struct tui_win_element *) |
6ba8e26f | 115 | TUI_SRC_WIN->generic.content[cur_line]; |
c906108c SS |
116 | |
117 | /* get the first character in the line */ | |
118 | c = fgetc (stream); | |
119 | ||
120 | if (offset == 0) | |
6ba8e26f | 121 | src_line = ((struct tui_win_element *) |
6d012f14 | 122 | TUI_SRC_WIN->generic.content[ |
6ba8e26f | 123 | cur_line])->which_element.source.line; |
c906108c | 124 | /* Init the line with the line number */ |
6ba8e26f AC |
125 | sprintf (src_line, "%-6d", cur_line_no); |
126 | cur_len = strlen (src_line); | |
127 | i = cur_len - | |
128 | ((cur_len / tui_default_tab_len ()) * tui_default_tab_len ()); | |
dd1abb8c | 129 | while (i < tui_default_tab_len ()) |
c906108c | 130 | { |
6ba8e26f | 131 | src_line[cur_len] = ' '; |
c906108c | 132 | i++; |
6ba8e26f | 133 | cur_len++; |
c906108c | 134 | } |
6ba8e26f | 135 | src_line[cur_len] = (char) 0; |
c906108c | 136 | |
98427f35 SC |
137 | /* Set whether element is the execution point and |
138 | whether there is a break point on it. */ | |
6d012f14 | 139 | element->which_element.source.line_or_addr.line_no = |
6ba8e26f | 140 | cur_line_no; |
6d012f14 | 141 | element->which_element.source.is_exec_point = |
2a8854a7 | 142 | (strcmp (((struct tui_win_element *) |
6d012f14 | 143 | locator->content[0])->which_element.locator.file_name, |
c906108c | 144 | s->filename) == 0 |
6ba8e26f | 145 | && cur_line_no == ((struct tui_win_element *) |
6d012f14 | 146 | locator->content[0])->which_element.locator.line_no); |
c906108c SS |
147 | if (c != EOF) |
148 | { | |
6ba8e26f | 149 | i = strlen (src_line) - 1; |
c906108c SS |
150 | do |
151 | { | |
152 | if ((c != '\n') && | |
153 | (c != '\r') && (++i < threshold)) | |
154 | { | |
155 | if (c < 040 && c != '\t') | |
156 | { | |
6ba8e26f AC |
157 | src_line[i++] = '^'; |
158 | src_line[i] = c + 0100; | |
c906108c SS |
159 | } |
160 | else if (c == 0177) | |
161 | { | |
6ba8e26f AC |
162 | src_line[i++] = '^'; |
163 | src_line[i] = '?'; | |
c906108c SS |
164 | } |
165 | else | |
98427f35 SC |
166 | { /* Store the charcter in the line |
167 | buffer. If it is a tab, then | |
168 | translate to the correct number of | |
169 | chars so we don't overwrite our | |
170 | buffer. */ | |
c906108c SS |
171 | if (c == '\t') |
172 | { | |
6ba8e26f | 173 | int j, max_tab_len = tui_default_tab_len (); |
c906108c SS |
174 | |
175 | for (j = i - ( | |
6ba8e26f AC |
176 | (i / max_tab_len) * max_tab_len); |
177 | ((j < max_tab_len) && | |
c906108c SS |
178 | i < threshold); |
179 | i++, j++) | |
6ba8e26f | 180 | src_line[i] = ' '; |
c906108c SS |
181 | i--; |
182 | } | |
183 | else | |
6ba8e26f | 184 | src_line[i] = c; |
c906108c | 185 | } |
6ba8e26f | 186 | src_line[i + 1] = 0; |
c906108c SS |
187 | } |
188 | else | |
98427f35 SC |
189 | { /* If we have not reached EOL, then eat |
190 | chars until we do */ | |
c906108c SS |
191 | while (c != EOF && c != '\n' && c != '\r') |
192 | c = fgetc (stream); | |
193 | } | |
194 | } | |
195 | while (c != EOF && c != '\n' && c != '\r' && | |
196 | i < threshold && (c = fgetc (stream))); | |
197 | } | |
198 | /* Now copy the line taking the offset into account */ | |
6ba8e26f | 199 | if (strlen (src_line) > offset) |
6d012f14 | 200 | strcpy (((struct tui_win_element *) TUI_SRC_WIN->generic.content[ |
6ba8e26f AC |
201 | cur_line])->which_element.source.line, |
202 | &src_line[offset]); | |
c906108c | 203 | else |
2a8854a7 | 204 | ((struct tui_win_element *) |
6d012f14 | 205 | TUI_SRC_WIN->generic.content[ |
6ba8e26f AC |
206 | cur_line])->which_element.source.line[0] = (char) 0; |
207 | cur_line++; | |
208 | cur_line_no++; | |
c906108c SS |
209 | } |
210 | if (offset > 0) | |
6ba8e26f | 211 | xfree (src_line); |
c906108c | 212 | fclose (stream); |
6d012f14 | 213 | TUI_SRC_WIN->generic.content_size = nlines; |
c906108c SS |
214 | ret = TUI_SUCCESS; |
215 | } | |
216 | } | |
217 | } | |
218 | } | |
219 | return ret; | |
98427f35 | 220 | } |
c906108c SS |
221 | |
222 | ||
223 | /* elz: this function sets the contents of the source window to empty | |
224 | except for a line in the middle with a warning message about the | |
225 | source not being available. This function is called by | |
6ba8e26f AC |
226 | tui_erase_source_contents(), which in turn is invoked when the |
227 | source files cannot be accessed. */ | |
c906108c SS |
228 | |
229 | void | |
6ba8e26f | 230 | tui_set_source_content_nil (struct tui_win_info * win_info, char *warning_string) |
c906108c | 231 | { |
6ba8e26f AC |
232 | int line_width; |
233 | int n_lines; | |
c906108c SS |
234 | int curr_line = 0; |
235 | ||
6ba8e26f AC |
236 | line_width = win_info->generic.width - 1; |
237 | n_lines = win_info->generic.height - 2; | |
c906108c SS |
238 | |
239 | /* set to empty each line in the window, except for the one | |
c5aa993b | 240 | which contains the message */ |
6ba8e26f | 241 | while (curr_line < win_info->generic.content_size) |
c906108c SS |
242 | { |
243 | /* set the information related to each displayed line | |
c5aa993b JM |
244 | to null: i.e. the line number is 0, there is no bp, |
245 | it is not where the program is stopped */ | |
c906108c | 246 | |
2a8854a7 | 247 | struct tui_win_element * element = |
6ba8e26f | 248 | (struct tui_win_element *) win_info->generic.content[curr_line]; |
6d012f14 AC |
249 | element->which_element.source.line_or_addr.line_no = 0; |
250 | element->which_element.source.is_exec_point = FALSE; | |
251 | element->which_element.source.has_break = FALSE; | |
c906108c | 252 | |
c5aa993b | 253 | /* set the contents of the line to blank */ |
6d012f14 | 254 | element->which_element.source.line[0] = (char) 0; |
c906108c | 255 | |
6ba8e26f AC |
256 | /* if the current line is in the middle of the screen, then we |
257 | want to display the 'no source available' message in it. | |
258 | Note: the 'weird' arithmetic with the line width and height | |
259 | comes from the function tui_erase_source_content(). We need | |
260 | to keep the screen and the window's actual contents in synch. */ | |
c906108c | 261 | |
6ba8e26f | 262 | if (curr_line == (n_lines / 2 + 1)) |
c906108c SS |
263 | { |
264 | int i; | |
265 | int xpos; | |
266 | int warning_length = strlen (warning_string); | |
6ba8e26f | 267 | char *src_line; |
c906108c | 268 | |
6ba8e26f | 269 | src_line = element->which_element.source.line; |
c906108c | 270 | |
6ba8e26f | 271 | if (warning_length >= ((line_width - 1) / 2)) |
c906108c SS |
272 | xpos = 1; |
273 | else | |
6ba8e26f | 274 | xpos = (line_width - 1) / 2 - warning_length; |
c906108c SS |
275 | |
276 | for (i = 0; i < xpos; i++) | |
6ba8e26f | 277 | src_line[i] = ' '; |
c906108c | 278 | |
6ba8e26f | 279 | sprintf (src_line + i, "%s", warning_string); |
c906108c | 280 | |
6ba8e26f AC |
281 | for (i = xpos + warning_length; i < line_width; i++) |
282 | src_line[i] = ' '; | |
c906108c | 283 | |
6ba8e26f | 284 | src_line[i] = '\n'; |
c906108c SS |
285 | |
286 | } /* end if */ | |
287 | ||
288 | curr_line++; | |
289 | ||
c5aa993b | 290 | } /* end while */ |
98427f35 | 291 | } |
c906108c SS |
292 | |
293 | ||
98427f35 SC |
294 | /* Function to display source in the source window. This function |
295 | initializes the horizontal scroll to 0. */ | |
c906108c | 296 | void |
2a8854a7 | 297 | tui_show_symtab_source (struct symtab *s, union tui_line_or_address line, int noerror) |
c906108c | 298 | { |
6d012f14 AC |
299 | TUI_SRC_WIN->detail.source_info.horizontal_offset = 0; |
300 | tui_update_source_window_as_is (TUI_SRC_WIN, s, line, noerror); | |
98427f35 | 301 | } |
c906108c | 302 | |
c906108c | 303 | |
a358af15 AC |
304 | /* Answer whether the source is currently displayed in the source |
305 | window. */ | |
c906108c | 306 | int |
a358af15 | 307 | tui_source_is_displayed (char *fname) |
c906108c | 308 | { |
6d012f14 | 309 | return (TUI_SRC_WIN->generic.content_in_use && |
2a8854a7 | 310 | (strcmp (((struct tui_win_element *) (tui_locator_win_info_ptr ())-> |
6d012f14 | 311 | content[0])->which_element.locator.file_name, fname) == 0)); |
98427f35 | 312 | } |
c906108c SS |
313 | |
314 | ||
98427f35 | 315 | /* Scroll the source forward or backward vertically. */ |
c906108c | 316 | void |
6ba8e26f AC |
317 | tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction, |
318 | int num_to_scroll) | |
c906108c | 319 | { |
6d012f14 | 320 | if (TUI_SRC_WIN->generic.content != NULL) |
c906108c | 321 | { |
2a8854a7 | 322 | union tui_line_or_address l; |
c906108c | 323 | struct symtab *s; |
6d012f14 | 324 | tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content; |
52575520 | 325 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 326 | |
52575520 | 327 | if (cursal.symtab == (struct symtab *) NULL) |
f70a7d61 | 328 | s = find_pc_symtab (get_frame_pc (deprecated_selected_frame)); |
c906108c | 329 | else |
52575520 | 330 | s = cursal.symtab; |
c906108c | 331 | |
6ba8e26f | 332 | if (scroll_direction == FORWARD_SCROLL) |
c906108c | 333 | { |
6d012f14 | 334 | l.line_no = content[0]->which_element.source.line_or_addr.line_no + |
6ba8e26f | 335 | num_to_scroll; |
6d012f14 | 336 | if (l.line_no > s->nlines) |
6ba8e26f | 337 | /*line = s->nlines - win_info->generic.content_size + 1; */ |
c5aa993b | 338 | /*elz: fix for dts 23398 */ |
6d012f14 | 339 | l.line_no = content[0]->which_element.source.line_or_addr.line_no; |
c906108c SS |
340 | } |
341 | else | |
342 | { | |
6d012f14 | 343 | l.line_no = content[0]->which_element.source.line_or_addr.line_no - |
6ba8e26f | 344 | num_to_scroll; |
6d012f14 AC |
345 | if (l.line_no <= 0) |
346 | l.line_no = 1; | |
c906108c | 347 | } |
27229e99 | 348 | |
6d012f14 | 349 | print_source_lines (s, l.line_no, l.line_no + 1, 0); |
c906108c | 350 | } |
98427f35 | 351 | } |