Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI display source window. |
f33c6cbf AC |
2 | |
3 | Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, | |
4 | Inc. | |
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 | 24 | |
f33c6cbf AC |
25 | /* FIXME: cagney/2002-02-28: The GDB coding standard indicates that |
26 | "defs.h" should be included first. Unfortunatly some systems | |
27 | (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h> | |
28 | and they clash with "bfd.h"'s definiton of true/false. The correct | |
29 | fix is to remove true/false from "bfd.h", however, until that | |
30 | happens, hack around it by including "config.h" and <curses.h> | |
31 | first. */ | |
32 | ||
4e8f7a8b DJ |
33 | #include "config.h" |
34 | #ifdef HAVE_NCURSES_H | |
35 | #include <ncurses.h> | |
36 | #else | |
37 | #ifdef HAVE_CURSES_H | |
38 | #include <curses.h> | |
39 | #endif | |
40 | #endif | |
41 | ||
c906108c SS |
42 | #include "defs.h" |
43 | #include <ctype.h> | |
44 | #include "symtab.h" | |
45 | #include "frame.h" | |
46 | #include "breakpoint.h" | |
c2c6d25f | 47 | #include "source.h" |
a4b99e53 | 48 | #include "symtab.h" |
c906108c SS |
49 | |
50 | #include "tui.h" | |
51 | #include "tuiData.h" | |
52 | #include "tuiStack.h" | |
53 | #include "tuiSourceWin.h" | |
54 | #include "tuiSource.h" | |
55 | ||
56 | ||
c906108c SS |
57 | /***************************************** |
58 | ** EXTERNAL DATA DECLS ** | |
59 | ******************************************/ | |
60 | extern int current_source_line; | |
61 | extern struct symtab *current_source_symtab; | |
62 | ||
63 | ||
64 | /***************************************** | |
65 | ** STATIC LOCAL FUNCTIONS FORWARD DECLS ** | |
66 | ******************************************/ | |
67 | ||
a14ed312 | 68 | static struct breakpoint *_hasBreak (char *, int); |
c906108c SS |
69 | |
70 | ||
71 | /***************************************** | |
72 | ** STATIC LOCAL DATA ** | |
73 | ******************************************/ | |
74 | ||
75 | ||
76 | /***************************************** | |
77 | ** PUBLIC FUNCTIONS ** | |
78 | ******************************************/ | |
79 | ||
80 | /********************************* | |
81 | ** SOURCE/DISASSEM FUNCTIONS ** | |
82 | *********************************/ | |
83 | ||
84 | /* | |
c5aa993b JM |
85 | ** tuiSetSourceContent(). |
86 | ** Function to display source in the source window. | |
87 | */ | |
c906108c | 88 | TuiStatus |
eca6576c | 89 | tuiSetSourceContent (struct symtab *s, int lineNo, int noerror) |
c906108c SS |
90 | { |
91 | TuiStatus ret = TUI_FAILURE; | |
92 | ||
93 | if (s != (struct symtab *) NULL && s->filename != (char *) NULL) | |
94 | { | |
95 | register FILE *stream; | |
96 | register int i, desc, c, lineWidth, nlines; | |
97 | register char *srcLine; | |
98 | ||
99 | if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS) | |
100 | { | |
101 | lineWidth = srcWin->generic.width - 1; | |
102 | /* | |
c5aa993b JM |
103 | ** Take hilite (window border) into account, when calculating |
104 | ** the number of lines | |
105 | */ | |
c906108c SS |
106 | nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo; |
107 | desc = open_source_file (s); | |
108 | if (desc < 0) | |
109 | { | |
110 | if (!noerror) | |
111 | { | |
112 | char *name = alloca (strlen (s->filename) + 100); | |
113 | sprintf (name, "%s:%d", s->filename, lineNo); | |
114 | print_sys_errmsg (name, errno); | |
115 | } | |
116 | ret = TUI_FAILURE; | |
117 | } | |
118 | else | |
119 | { | |
120 | if (s->line_charpos == 0) | |
121 | find_source_lines (s, desc); | |
122 | ||
123 | if (lineNo < 1 || lineNo > s->nlines) | |
124 | { | |
125 | close (desc); | |
126 | printf_unfiltered ( | |
127 | "Line number %d out of range; %s has %d lines.\n", | |
128 | lineNo, s->filename, s->nlines); | |
129 | } | |
130 | else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0) | |
131 | { | |
132 | close (desc); | |
133 | perror_with_name (s->filename); | |
134 | } | |
135 | else | |
136 | { | |
137 | register int offset, curLineNo, curLine, curLen, threshold; | |
138 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); | |
139 | /* | |
c5aa993b JM |
140 | ** Determine the threshold for the length of the line |
141 | ** and the offset to start the display | |
142 | */ | |
c906108c SS |
143 | offset = srcWin->detail.sourceInfo.horizontalOffset; |
144 | threshold = (lineWidth - 1) + offset; | |
145 | stream = fdopen (desc, FOPEN_RT); | |
146 | clearerr (stream); | |
147 | curLine = 0; | |
148 | curLineNo = | |
149 | srcWin->detail.sourceInfo.startLineOrAddr.lineNo = lineNo; | |
150 | if (offset > 0) | |
151 | srcLine = (char *) xmalloc ( | |
152 | (threshold + 1) * sizeof (char)); | |
153 | while (curLine < nlines) | |
154 | { | |
155 | TuiWinElementPtr element = (TuiWinElementPtr) | |
156 | srcWin->generic.content[curLine]; | |
157 | struct breakpoint *bp; | |
158 | ||
159 | /* get the first character in the line */ | |
160 | c = fgetc (stream); | |
161 | ||
162 | if (offset == 0) | |
163 | srcLine = ((TuiWinElementPtr) | |
164 | srcWin->generic.content[ | |
165 | curLine])->whichElement.source.line; | |
166 | /* Init the line with the line number */ | |
167 | sprintf (srcLine, "%-6d", curLineNo); | |
168 | curLen = strlen (srcLine); | |
169 | i = curLen - | |
170 | ((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ()); | |
171 | while (i < tuiDefaultTabLen ()) | |
172 | { | |
173 | srcLine[curLen] = ' '; | |
174 | i++; | |
175 | curLen++; | |
176 | } | |
177 | srcLine[curLen] = (char) 0; | |
178 | ||
179 | /* | |
c5aa993b JM |
180 | ** Set whether element is the execution point and |
181 | ** whether there is a break point on it. | |
182 | */ | |
c906108c SS |
183 | element->whichElement.source.lineOrAddr.lineNo = |
184 | curLineNo; | |
185 | element->whichElement.source.isExecPoint = | |
186 | (strcmp (((TuiWinElementPtr) | |
187 | locator->content[0])->whichElement.locator.fileName, | |
188 | s->filename) == 0 | |
189 | && curLineNo == ((TuiWinElementPtr) | |
190 | locator->content[0])->whichElement.locator.lineNo); | |
191 | bp = _hasBreak (s->filename, curLineNo); | |
192 | element->whichElement.source.hasBreak = | |
193 | (bp != (struct breakpoint *) NULL && | |
194 | (!element->whichElement.source.isExecPoint || | |
b5de0fa7 | 195 | (bp->disposition != disp_del || bp->hit_count <= 0))); |
c906108c SS |
196 | if (c != EOF) |
197 | { | |
198 | i = strlen (srcLine) - 1; | |
199 | do | |
200 | { | |
201 | if ((c != '\n') && | |
202 | (c != '\r') && (++i < threshold)) | |
203 | { | |
204 | if (c < 040 && c != '\t') | |
205 | { | |
206 | srcLine[i++] = '^'; | |
207 | srcLine[i] = c + 0100; | |
208 | } | |
209 | else if (c == 0177) | |
210 | { | |
211 | srcLine[i++] = '^'; | |
212 | srcLine[i] = '?'; | |
213 | } | |
214 | else | |
215 | { /* | |
c5aa993b JM |
216 | ** Store the charcter in the line |
217 | ** buffer. If it is a tab, then | |
218 | ** translate to the correct number of | |
219 | ** chars so we don't overwrite our | |
220 | ** buffer. | |
221 | */ | |
c906108c SS |
222 | if (c == '\t') |
223 | { | |
224 | int j, maxTabLen = tuiDefaultTabLen (); | |
225 | ||
226 | for (j = i - ( | |
227 | (i / maxTabLen) * maxTabLen); | |
228 | ((j < maxTabLen) && | |
229 | i < threshold); | |
230 | i++, j++) | |
231 | srcLine[i] = ' '; | |
232 | i--; | |
233 | } | |
234 | else | |
235 | srcLine[i] = c; | |
236 | } | |
237 | srcLine[i + 1] = 0; | |
238 | } | |
239 | else | |
240 | { /* | |
c5aa993b JM |
241 | ** if we have not reached EOL, then eat |
242 | ** chars until we do | |
243 | */ | |
c906108c SS |
244 | while (c != EOF && c != '\n' && c != '\r') |
245 | c = fgetc (stream); | |
246 | } | |
247 | } | |
248 | while (c != EOF && c != '\n' && c != '\r' && | |
249 | i < threshold && (c = fgetc (stream))); | |
250 | } | |
251 | /* Now copy the line taking the offset into account */ | |
252 | if (strlen (srcLine) > offset) | |
253 | strcpy (((TuiWinElementPtr) srcWin->generic.content[ | |
254 | curLine])->whichElement.source.line, | |
255 | &srcLine[offset]); | |
256 | else | |
257 | ((TuiWinElementPtr) | |
258 | srcWin->generic.content[ | |
259 | curLine])->whichElement.source.line[0] = (char) 0; | |
260 | curLine++; | |
261 | curLineNo++; | |
262 | } | |
263 | if (offset > 0) | |
264 | tuiFree (srcLine); | |
265 | fclose (stream); | |
266 | srcWin->generic.contentSize = nlines; | |
267 | ret = TUI_SUCCESS; | |
268 | } | |
269 | } | |
270 | } | |
271 | } | |
272 | return ret; | |
273 | } /* tuiSetSourceContent */ | |
274 | ||
275 | ||
276 | /* elz: this function sets the contents of the source window to empty | |
277 | except for a line in the middle with a warning message about the | |
278 | source not being available. This function is called by | |
279 | tuiEraseSourceContents, which in turn is invoked when the source files | |
c5aa993b | 280 | cannot be accessed */ |
c906108c SS |
281 | |
282 | void | |
eca6576c | 283 | tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string) |
c906108c SS |
284 | { |
285 | int lineWidth; | |
286 | int nLines; | |
287 | int curr_line = 0; | |
288 | ||
289 | lineWidth = winInfo->generic.width - 1; | |
290 | nLines = winInfo->generic.height - 2; | |
291 | ||
292 | /* set to empty each line in the window, except for the one | |
c5aa993b | 293 | which contains the message */ |
c906108c SS |
294 | while (curr_line < winInfo->generic.contentSize) |
295 | { | |
296 | /* set the information related to each displayed line | |
c5aa993b JM |
297 | to null: i.e. the line number is 0, there is no bp, |
298 | it is not where the program is stopped */ | |
c906108c SS |
299 | |
300 | TuiWinElementPtr element = | |
301 | (TuiWinElementPtr) winInfo->generic.content[curr_line]; | |
302 | element->whichElement.source.lineOrAddr.lineNo = 0; | |
303 | element->whichElement.source.isExecPoint = FALSE; | |
304 | element->whichElement.source.hasBreak = FALSE; | |
305 | ||
c5aa993b | 306 | /* set the contents of the line to blank */ |
c906108c SS |
307 | element->whichElement.source.line[0] = (char) 0; |
308 | ||
309 | /* if the current line is in the middle of the screen, then we want to | |
c5aa993b JM |
310 | display the 'no source available' message in it. |
311 | Note: the 'weird' arithmetic with the line width and height comes from | |
312 | the function tuiEraseSourceContent. We need to keep the screen and the | |
313 | window's actual contents in synch */ | |
c906108c SS |
314 | |
315 | if (curr_line == (nLines / 2 + 1)) | |
316 | { | |
317 | int i; | |
318 | int xpos; | |
319 | int warning_length = strlen (warning_string); | |
320 | char *srcLine; | |
321 | ||
322 | srcLine = element->whichElement.source.line; | |
323 | ||
324 | if (warning_length >= ((lineWidth - 1) / 2)) | |
325 | xpos = 1; | |
326 | else | |
327 | xpos = (lineWidth - 1) / 2 - warning_length; | |
328 | ||
329 | for (i = 0; i < xpos; i++) | |
330 | srcLine[i] = ' '; | |
331 | ||
332 | sprintf (srcLine + i, "%s", warning_string); | |
333 | ||
334 | for (i = xpos + warning_length; i < lineWidth; i++) | |
335 | srcLine[i] = ' '; | |
336 | ||
337 | srcLine[i] = '\n'; | |
338 | ||
339 | } /* end if */ | |
340 | ||
341 | curr_line++; | |
342 | ||
c5aa993b | 343 | } /* end while */ |
c906108c | 344 | |
c5aa993b | 345 | } /*tuiSetSourceContentNil */ |
c906108c SS |
346 | |
347 | ||
348 | ||
349 | ||
350 | /* | |
c5aa993b JM |
351 | ** tuiShowSource(). |
352 | ** Function to display source in the source window. This function | |
353 | ** initializes the horizontal scroll to 0. | |
354 | */ | |
c906108c | 355 | void |
a4b99e53 | 356 | tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror) |
c906108c SS |
357 | { |
358 | srcWin->detail.sourceInfo.horizontalOffset = 0; | |
a4b99e53 | 359 | tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror); |
c906108c SS |
360 | |
361 | return; | |
362 | } /* tuiShowSource */ | |
363 | ||
364 | ||
365 | /* | |
c5aa993b JM |
366 | ** tuiSourceIsDisplayed(). |
367 | ** Answer whether the source is currently displayed in the source window. | |
368 | */ | |
c906108c | 369 | int |
eca6576c | 370 | tuiSourceIsDisplayed (char *fname) |
c906108c SS |
371 | { |
372 | return (srcWin->generic.contentInUse && | |
373 | (strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())-> | |
374 | content[0])->whichElement.locator.fileName, fname) == 0)); | |
375 | } /* tuiSourceIsDisplayed */ | |
376 | ||
377 | ||
378 | /* | |
c5aa993b JM |
379 | ** tuiVerticalSourceScroll(). |
380 | ** Scroll the source forward or backward vertically | |
381 | */ | |
c906108c | 382 | void |
a4b99e53 SC |
383 | tuiVerticalSourceScroll (TuiScrollDirection scrollDirection, |
384 | int numToScroll) | |
c906108c SS |
385 | { |
386 | if (srcWin->generic.content != (OpaquePtr) NULL) | |
387 | { | |
a4b99e53 | 388 | TuiLineOrAddress l; |
c906108c SS |
389 | struct symtab *s; |
390 | TuiWinContent content = (TuiWinContent) srcWin->generic.content; | |
391 | ||
392 | if (current_source_symtab == (struct symtab *) NULL) | |
393 | s = find_pc_symtab (selected_frame->pc); | |
394 | else | |
395 | s = current_source_symtab; | |
396 | ||
397 | if (scrollDirection == FORWARD_SCROLL) | |
398 | { | |
a4b99e53 | 399 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo + |
c906108c | 400 | numToScroll; |
a4b99e53 | 401 | if (l.lineNo > s->nlines) |
c5aa993b JM |
402 | /*line = s->nlines - winInfo->generic.contentSize + 1; */ |
403 | /*elz: fix for dts 23398 */ | |
a4b99e53 | 404 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo; |
c906108c SS |
405 | } |
406 | else | |
407 | { | |
a4b99e53 | 408 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo - |
c906108c | 409 | numToScroll; |
a4b99e53 SC |
410 | if (l.lineNo <= 0) |
411 | l.lineNo = 1; | |
c906108c | 412 | } |
a4b99e53 SC |
413 | if (identify_source_line (s, l.lineNo, 0, -1) == 1) |
414 | tuiUpdateSourceWindowAsIs (srcWin, s, l, FALSE); | |
c906108c SS |
415 | } |
416 | ||
417 | return; | |
418 | } /* tuiVerticalSourceScroll */ | |
419 | ||
420 | ||
421 | /***************************************** | |
422 | ** STATIC LOCAL FUNCTIONS ** | |
423 | ******************************************/ | |
424 | ||
425 | /* | |
c5aa993b JM |
426 | ** _hasBreak(). |
427 | ** Answer whether there is a break point at the input line in | |
428 | ** the source file indicated | |
429 | */ | |
c906108c | 430 | static struct breakpoint * |
eca6576c | 431 | _hasBreak (char *sourceFileName, int lineNo) |
c906108c SS |
432 | { |
433 | struct breakpoint *bpWithBreak = (struct breakpoint *) NULL; | |
434 | struct breakpoint *bp; | |
435 | extern struct breakpoint *breakpoint_chain; | |
436 | ||
437 | ||
438 | for (bp = breakpoint_chain; | |
439 | (bp != (struct breakpoint *) NULL && | |
440 | bpWithBreak == (struct breakpoint *) NULL); | |
441 | bp = bp->next) | |
75fd9bc1 SC |
442 | if (bp->source_file |
443 | && (strcmp (sourceFileName, bp->source_file) == 0) | |
444 | && (lineNo == bp->line_number)) | |
c906108c SS |
445 | bpWithBreak = bp; |
446 | ||
447 | return bpWithBreak; | |
448 | } /* _hasBreak */ |