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f377b406 SC |
1 | /* TUI display source window. |
2 | Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
3 | Contributed by Hewlett-Packard Company. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
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" |
c906108c SS |
29 | |
30 | #include "tui.h" | |
31 | #include "tuiData.h" | |
32 | #include "tuiStack.h" | |
33 | #include "tuiSourceWin.h" | |
34 | #include "tuiSource.h" | |
35 | ||
36 | ||
c906108c SS |
37 | /***************************************** |
38 | ** EXTERNAL DATA DECLS ** | |
39 | ******************************************/ | |
40 | extern int current_source_line; | |
41 | extern struct symtab *current_source_symtab; | |
42 | ||
43 | ||
44 | /***************************************** | |
45 | ** STATIC LOCAL FUNCTIONS FORWARD DECLS ** | |
46 | ******************************************/ | |
47 | ||
a14ed312 | 48 | static struct breakpoint *_hasBreak (char *, int); |
c906108c SS |
49 | |
50 | ||
51 | /***************************************** | |
52 | ** STATIC LOCAL DATA ** | |
53 | ******************************************/ | |
54 | ||
55 | ||
56 | /***************************************** | |
57 | ** PUBLIC FUNCTIONS ** | |
58 | ******************************************/ | |
59 | ||
60 | /********************************* | |
61 | ** SOURCE/DISASSEM FUNCTIONS ** | |
62 | *********************************/ | |
63 | ||
64 | /* | |
c5aa993b JM |
65 | ** tuiSetSourceContent(). |
66 | ** Function to display source in the source window. | |
67 | */ | |
c906108c | 68 | TuiStatus |
eca6576c | 69 | tuiSetSourceContent (struct symtab *s, int lineNo, int noerror) |
c906108c SS |
70 | { |
71 | TuiStatus ret = TUI_FAILURE; | |
72 | ||
73 | if (s != (struct symtab *) NULL && s->filename != (char *) NULL) | |
74 | { | |
75 | register FILE *stream; | |
76 | register int i, desc, c, lineWidth, nlines; | |
77 | register char *srcLine; | |
78 | ||
79 | if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS) | |
80 | { | |
81 | lineWidth = srcWin->generic.width - 1; | |
82 | /* | |
c5aa993b JM |
83 | ** Take hilite (window border) into account, when calculating |
84 | ** the number of lines | |
85 | */ | |
c906108c SS |
86 | nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo; |
87 | desc = open_source_file (s); | |
88 | if (desc < 0) | |
89 | { | |
90 | if (!noerror) | |
91 | { | |
92 | char *name = alloca (strlen (s->filename) + 100); | |
93 | sprintf (name, "%s:%d", s->filename, lineNo); | |
94 | print_sys_errmsg (name, errno); | |
95 | } | |
96 | ret = TUI_FAILURE; | |
97 | } | |
98 | else | |
99 | { | |
100 | if (s->line_charpos == 0) | |
101 | find_source_lines (s, desc); | |
102 | ||
103 | if (lineNo < 1 || lineNo > s->nlines) | |
104 | { | |
105 | close (desc); | |
106 | printf_unfiltered ( | |
107 | "Line number %d out of range; %s has %d lines.\n", | |
108 | lineNo, s->filename, s->nlines); | |
109 | } | |
110 | else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0) | |
111 | { | |
112 | close (desc); | |
113 | perror_with_name (s->filename); | |
114 | } | |
115 | else | |
116 | { | |
117 | register int offset, curLineNo, curLine, curLen, threshold; | |
118 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); | |
119 | /* | |
c5aa993b JM |
120 | ** Determine the threshold for the length of the line |
121 | ** and the offset to start the display | |
122 | */ | |
c906108c SS |
123 | offset = srcWin->detail.sourceInfo.horizontalOffset; |
124 | threshold = (lineWidth - 1) + offset; | |
125 | stream = fdopen (desc, FOPEN_RT); | |
126 | clearerr (stream); | |
127 | curLine = 0; | |
128 | curLineNo = | |
129 | srcWin->detail.sourceInfo.startLineOrAddr.lineNo = lineNo; | |
130 | if (offset > 0) | |
131 | srcLine = (char *) xmalloc ( | |
132 | (threshold + 1) * sizeof (char)); | |
133 | while (curLine < nlines) | |
134 | { | |
135 | TuiWinElementPtr element = (TuiWinElementPtr) | |
136 | srcWin->generic.content[curLine]; | |
137 | struct breakpoint *bp; | |
138 | ||
139 | /* get the first character in the line */ | |
140 | c = fgetc (stream); | |
141 | ||
142 | if (offset == 0) | |
143 | srcLine = ((TuiWinElementPtr) | |
144 | srcWin->generic.content[ | |
145 | curLine])->whichElement.source.line; | |
146 | /* Init the line with the line number */ | |
147 | sprintf (srcLine, "%-6d", curLineNo); | |
148 | curLen = strlen (srcLine); | |
149 | i = curLen - | |
150 | ((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ()); | |
151 | while (i < tuiDefaultTabLen ()) | |
152 | { | |
153 | srcLine[curLen] = ' '; | |
154 | i++; | |
155 | curLen++; | |
156 | } | |
157 | srcLine[curLen] = (char) 0; | |
158 | ||
159 | /* | |
c5aa993b JM |
160 | ** Set whether element is the execution point and |
161 | ** whether there is a break point on it. | |
162 | */ | |
c906108c SS |
163 | element->whichElement.source.lineOrAddr.lineNo = |
164 | curLineNo; | |
165 | element->whichElement.source.isExecPoint = | |
166 | (strcmp (((TuiWinElementPtr) | |
167 | locator->content[0])->whichElement.locator.fileName, | |
168 | s->filename) == 0 | |
169 | && curLineNo == ((TuiWinElementPtr) | |
170 | locator->content[0])->whichElement.locator.lineNo); | |
171 | bp = _hasBreak (s->filename, curLineNo); | |
172 | element->whichElement.source.hasBreak = | |
173 | (bp != (struct breakpoint *) NULL && | |
174 | (!element->whichElement.source.isExecPoint || | |
b5de0fa7 | 175 | (bp->disposition != disp_del || bp->hit_count <= 0))); |
c906108c SS |
176 | if (c != EOF) |
177 | { | |
178 | i = strlen (srcLine) - 1; | |
179 | do | |
180 | { | |
181 | if ((c != '\n') && | |
182 | (c != '\r') && (++i < threshold)) | |
183 | { | |
184 | if (c < 040 && c != '\t') | |
185 | { | |
186 | srcLine[i++] = '^'; | |
187 | srcLine[i] = c + 0100; | |
188 | } | |
189 | else if (c == 0177) | |
190 | { | |
191 | srcLine[i++] = '^'; | |
192 | srcLine[i] = '?'; | |
193 | } | |
194 | else | |
195 | { /* | |
c5aa993b JM |
196 | ** Store the charcter in the line |
197 | ** buffer. If it is a tab, then | |
198 | ** translate to the correct number of | |
199 | ** chars so we don't overwrite our | |
200 | ** buffer. | |
201 | */ | |
c906108c SS |
202 | if (c == '\t') |
203 | { | |
204 | int j, maxTabLen = tuiDefaultTabLen (); | |
205 | ||
206 | for (j = i - ( | |
207 | (i / maxTabLen) * maxTabLen); | |
208 | ((j < maxTabLen) && | |
209 | i < threshold); | |
210 | i++, j++) | |
211 | srcLine[i] = ' '; | |
212 | i--; | |
213 | } | |
214 | else | |
215 | srcLine[i] = c; | |
216 | } | |
217 | srcLine[i + 1] = 0; | |
218 | } | |
219 | else | |
220 | { /* | |
c5aa993b JM |
221 | ** if we have not reached EOL, then eat |
222 | ** chars until we do | |
223 | */ | |
c906108c SS |
224 | while (c != EOF && c != '\n' && c != '\r') |
225 | c = fgetc (stream); | |
226 | } | |
227 | } | |
228 | while (c != EOF && c != '\n' && c != '\r' && | |
229 | i < threshold && (c = fgetc (stream))); | |
230 | } | |
231 | /* Now copy the line taking the offset into account */ | |
232 | if (strlen (srcLine) > offset) | |
233 | strcpy (((TuiWinElementPtr) srcWin->generic.content[ | |
234 | curLine])->whichElement.source.line, | |
235 | &srcLine[offset]); | |
236 | else | |
237 | ((TuiWinElementPtr) | |
238 | srcWin->generic.content[ | |
239 | curLine])->whichElement.source.line[0] = (char) 0; | |
240 | curLine++; | |
241 | curLineNo++; | |
242 | } | |
243 | if (offset > 0) | |
244 | tuiFree (srcLine); | |
245 | fclose (stream); | |
246 | srcWin->generic.contentSize = nlines; | |
247 | ret = TUI_SUCCESS; | |
248 | } | |
249 | } | |
250 | } | |
251 | } | |
252 | return ret; | |
253 | } /* tuiSetSourceContent */ | |
254 | ||
255 | ||
256 | /* elz: this function sets the contents of the source window to empty | |
257 | except for a line in the middle with a warning message about the | |
258 | source not being available. This function is called by | |
259 | tuiEraseSourceContents, which in turn is invoked when the source files | |
c5aa993b | 260 | cannot be accessed */ |
c906108c SS |
261 | |
262 | void | |
eca6576c | 263 | tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string) |
c906108c SS |
264 | { |
265 | int lineWidth; | |
266 | int nLines; | |
267 | int curr_line = 0; | |
268 | ||
269 | lineWidth = winInfo->generic.width - 1; | |
270 | nLines = winInfo->generic.height - 2; | |
271 | ||
272 | /* set to empty each line in the window, except for the one | |
c5aa993b | 273 | which contains the message */ |
c906108c SS |
274 | while (curr_line < winInfo->generic.contentSize) |
275 | { | |
276 | /* set the information related to each displayed line | |
c5aa993b JM |
277 | to null: i.e. the line number is 0, there is no bp, |
278 | it is not where the program is stopped */ | |
c906108c SS |
279 | |
280 | TuiWinElementPtr element = | |
281 | (TuiWinElementPtr) winInfo->generic.content[curr_line]; | |
282 | element->whichElement.source.lineOrAddr.lineNo = 0; | |
283 | element->whichElement.source.isExecPoint = FALSE; | |
284 | element->whichElement.source.hasBreak = FALSE; | |
285 | ||
c5aa993b | 286 | /* set the contents of the line to blank */ |
c906108c SS |
287 | element->whichElement.source.line[0] = (char) 0; |
288 | ||
289 | /* if the current line is in the middle of the screen, then we want to | |
c5aa993b JM |
290 | display the 'no source available' message in it. |
291 | Note: the 'weird' arithmetic with the line width and height comes from | |
292 | the function tuiEraseSourceContent. We need to keep the screen and the | |
293 | window's actual contents in synch */ | |
c906108c SS |
294 | |
295 | if (curr_line == (nLines / 2 + 1)) | |
296 | { | |
297 | int i; | |
298 | int xpos; | |
299 | int warning_length = strlen (warning_string); | |
300 | char *srcLine; | |
301 | ||
302 | srcLine = element->whichElement.source.line; | |
303 | ||
304 | if (warning_length >= ((lineWidth - 1) / 2)) | |
305 | xpos = 1; | |
306 | else | |
307 | xpos = (lineWidth - 1) / 2 - warning_length; | |
308 | ||
309 | for (i = 0; i < xpos; i++) | |
310 | srcLine[i] = ' '; | |
311 | ||
312 | sprintf (srcLine + i, "%s", warning_string); | |
313 | ||
314 | for (i = xpos + warning_length; i < lineWidth; i++) | |
315 | srcLine[i] = ' '; | |
316 | ||
317 | srcLine[i] = '\n'; | |
318 | ||
319 | } /* end if */ | |
320 | ||
321 | curr_line++; | |
322 | ||
c5aa993b | 323 | } /* end while */ |
c906108c | 324 | |
c5aa993b | 325 | } /*tuiSetSourceContentNil */ |
c906108c SS |
326 | |
327 | ||
328 | ||
329 | ||
330 | /* | |
c5aa993b JM |
331 | ** tuiShowSource(). |
332 | ** Function to display source in the source window. This function | |
333 | ** initializes the horizontal scroll to 0. | |
334 | */ | |
c906108c | 335 | void |
a4b99e53 | 336 | tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror) |
c906108c SS |
337 | { |
338 | srcWin->detail.sourceInfo.horizontalOffset = 0; | |
a4b99e53 | 339 | tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror); |
c906108c SS |
340 | |
341 | return; | |
342 | } /* tuiShowSource */ | |
343 | ||
344 | ||
345 | /* | |
c5aa993b JM |
346 | ** tuiSourceIsDisplayed(). |
347 | ** Answer whether the source is currently displayed in the source window. | |
348 | */ | |
c906108c | 349 | int |
eca6576c | 350 | tuiSourceIsDisplayed (char *fname) |
c906108c SS |
351 | { |
352 | return (srcWin->generic.contentInUse && | |
353 | (strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())-> | |
354 | content[0])->whichElement.locator.fileName, fname) == 0)); | |
355 | } /* tuiSourceIsDisplayed */ | |
356 | ||
357 | ||
358 | /* | |
c5aa993b JM |
359 | ** tuiVerticalSourceScroll(). |
360 | ** Scroll the source forward or backward vertically | |
361 | */ | |
c906108c | 362 | void |
a4b99e53 SC |
363 | tuiVerticalSourceScroll (TuiScrollDirection scrollDirection, |
364 | int numToScroll) | |
c906108c SS |
365 | { |
366 | if (srcWin->generic.content != (OpaquePtr) NULL) | |
367 | { | |
a4b99e53 | 368 | TuiLineOrAddress l; |
c906108c SS |
369 | struct symtab *s; |
370 | TuiWinContent content = (TuiWinContent) srcWin->generic.content; | |
371 | ||
372 | if (current_source_symtab == (struct symtab *) NULL) | |
373 | s = find_pc_symtab (selected_frame->pc); | |
374 | else | |
375 | s = current_source_symtab; | |
376 | ||
377 | if (scrollDirection == FORWARD_SCROLL) | |
378 | { | |
a4b99e53 | 379 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo + |
c906108c | 380 | numToScroll; |
a4b99e53 | 381 | if (l.lineNo > s->nlines) |
c5aa993b JM |
382 | /*line = s->nlines - winInfo->generic.contentSize + 1; */ |
383 | /*elz: fix for dts 23398 */ | |
a4b99e53 | 384 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo; |
c906108c SS |
385 | } |
386 | else | |
387 | { | |
a4b99e53 | 388 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo - |
c906108c | 389 | numToScroll; |
a4b99e53 SC |
390 | if (l.lineNo <= 0) |
391 | l.lineNo = 1; | |
c906108c | 392 | } |
a4b99e53 SC |
393 | if (identify_source_line (s, l.lineNo, 0, -1) == 1) |
394 | tuiUpdateSourceWindowAsIs (srcWin, s, l, FALSE); | |
c906108c SS |
395 | } |
396 | ||
397 | return; | |
398 | } /* tuiVerticalSourceScroll */ | |
399 | ||
400 | ||
401 | /***************************************** | |
402 | ** STATIC LOCAL FUNCTIONS ** | |
403 | ******************************************/ | |
404 | ||
405 | /* | |
c5aa993b JM |
406 | ** _hasBreak(). |
407 | ** Answer whether there is a break point at the input line in | |
408 | ** the source file indicated | |
409 | */ | |
c906108c | 410 | static struct breakpoint * |
eca6576c | 411 | _hasBreak (char *sourceFileName, int lineNo) |
c906108c SS |
412 | { |
413 | struct breakpoint *bpWithBreak = (struct breakpoint *) NULL; | |
414 | struct breakpoint *bp; | |
415 | extern struct breakpoint *breakpoint_chain; | |
416 | ||
417 | ||
418 | for (bp = breakpoint_chain; | |
419 | (bp != (struct breakpoint *) NULL && | |
420 | bpWithBreak == (struct breakpoint *) NULL); | |
421 | bp = bp->next) | |
75fd9bc1 SC |
422 | if (bp->source_file |
423 | && (strcmp (sourceFileName, bp->source_file) == 0) | |
424 | && (lineNo == bp->line_number)) | |
c906108c SS |
425 | bpWithBreak = bp; |
426 | ||
427 | return bpWithBreak; | |
428 | } /* _hasBreak */ |