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f377b406 | 1 | /* TUI display source window. |
f33c6cbf | 2 | |
96ec9981 | 3 | Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, |
f33c6cbf AC |
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 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 SS |
32 | |
33 | #include "tui.h" | |
34 | #include "tuiData.h" | |
35 | #include "tuiStack.h" | |
36 | #include "tuiSourceWin.h" | |
37 | #include "tuiSource.h" | |
38 | ||
96ec9981 DJ |
39 | #ifdef HAVE_NCURSES_H |
40 | #include <ncurses.h> | |
41 | #else | |
42 | #ifdef HAVE_CURSES_H | |
43 | #include <curses.h> | |
44 | #endif | |
45 | #endif | |
c906108c | 46 | |
98427f35 | 47 | /* Function to display source in the source window. */ |
c906108c | 48 | TuiStatus |
eca6576c | 49 | tuiSetSourceContent (struct symtab *s, int lineNo, int noerror) |
c906108c SS |
50 | { |
51 | TuiStatus ret = TUI_FAILURE; | |
52 | ||
53 | if (s != (struct symtab *) NULL && s->filename != (char *) NULL) | |
54 | { | |
55 | register FILE *stream; | |
56 | register int i, desc, c, lineWidth, nlines; | |
bc6b7f04 | 57 | register char *srcLine = 0; |
c906108c SS |
58 | |
59 | if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS) | |
60 | { | |
61 | lineWidth = srcWin->generic.width - 1; | |
98427f35 SC |
62 | /* Take hilite (window border) into account, when calculating |
63 | the number of lines */ | |
c906108c SS |
64 | nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo; |
65 | desc = open_source_file (s); | |
66 | if (desc < 0) | |
67 | { | |
68 | if (!noerror) | |
69 | { | |
70 | char *name = alloca (strlen (s->filename) + 100); | |
71 | sprintf (name, "%s:%d", s->filename, lineNo); | |
72 | print_sys_errmsg (name, errno); | |
73 | } | |
74 | ret = TUI_FAILURE; | |
75 | } | |
76 | else | |
77 | { | |
78 | if (s->line_charpos == 0) | |
79 | find_source_lines (s, desc); | |
80 | ||
81 | if (lineNo < 1 || lineNo > s->nlines) | |
82 | { | |
83 | close (desc); | |
84 | printf_unfiltered ( | |
85 | "Line number %d out of range; %s has %d lines.\n", | |
86 | lineNo, s->filename, s->nlines); | |
87 | } | |
88 | else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0) | |
89 | { | |
90 | close (desc); | |
91 | perror_with_name (s->filename); | |
92 | } | |
93 | else | |
94 | { | |
95 | register int offset, curLineNo, curLine, curLen, threshold; | |
96 | TuiGenWinInfoPtr locator = locatorWinInfoPtr (); | |
bc6b7f04 SC |
97 | TuiSourceInfoPtr src = &srcWin->detail.sourceInfo; |
98 | ||
99 | if (srcWin->generic.title) | |
100 | xfree (srcWin->generic.title); | |
101 | srcWin->generic.title = xstrdup (s->filename); | |
102 | ||
103 | if (src->filename) | |
104 | xfree (src->filename); | |
105 | src->filename = xstrdup (s->filename); | |
106 | ||
107 | /* Determine the threshold for the length of the line | |
108 | and the offset to start the display. */ | |
109 | offset = src->horizontalOffset; | |
c906108c SS |
110 | threshold = (lineWidth - 1) + offset; |
111 | stream = fdopen (desc, FOPEN_RT); | |
112 | clearerr (stream); | |
113 | curLine = 0; | |
bc6b7f04 | 114 | curLineNo = src->startLineOrAddr.lineNo = lineNo; |
c906108c SS |
115 | if (offset > 0) |
116 | srcLine = (char *) xmalloc ( | |
117 | (threshold + 1) * sizeof (char)); | |
118 | while (curLine < nlines) | |
119 | { | |
120 | TuiWinElementPtr element = (TuiWinElementPtr) | |
121 | srcWin->generic.content[curLine]; | |
c906108c SS |
122 | |
123 | /* get the first character in the line */ | |
124 | c = fgetc (stream); | |
125 | ||
126 | if (offset == 0) | |
127 | srcLine = ((TuiWinElementPtr) | |
128 | srcWin->generic.content[ | |
129 | curLine])->whichElement.source.line; | |
130 | /* Init the line with the line number */ | |
131 | sprintf (srcLine, "%-6d", curLineNo); | |
132 | curLen = strlen (srcLine); | |
133 | i = curLen - | |
134 | ((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ()); | |
135 | while (i < tuiDefaultTabLen ()) | |
136 | { | |
137 | srcLine[curLen] = ' '; | |
138 | i++; | |
139 | curLen++; | |
140 | } | |
141 | srcLine[curLen] = (char) 0; | |
142 | ||
98427f35 SC |
143 | /* Set whether element is the execution point and |
144 | whether there is a break point on it. */ | |
c906108c SS |
145 | element->whichElement.source.lineOrAddr.lineNo = |
146 | curLineNo; | |
147 | element->whichElement.source.isExecPoint = | |
148 | (strcmp (((TuiWinElementPtr) | |
149 | locator->content[0])->whichElement.locator.fileName, | |
150 | s->filename) == 0 | |
151 | && curLineNo == ((TuiWinElementPtr) | |
152 | locator->content[0])->whichElement.locator.lineNo); | |
c906108c SS |
153 | if (c != EOF) |
154 | { | |
155 | i = strlen (srcLine) - 1; | |
156 | do | |
157 | { | |
158 | if ((c != '\n') && | |
159 | (c != '\r') && (++i < threshold)) | |
160 | { | |
161 | if (c < 040 && c != '\t') | |
162 | { | |
163 | srcLine[i++] = '^'; | |
164 | srcLine[i] = c + 0100; | |
165 | } | |
166 | else if (c == 0177) | |
167 | { | |
168 | srcLine[i++] = '^'; | |
169 | srcLine[i] = '?'; | |
170 | } | |
171 | else | |
98427f35 SC |
172 | { /* Store the charcter in the line |
173 | buffer. If it is a tab, then | |
174 | translate to the correct number of | |
175 | chars so we don't overwrite our | |
176 | buffer. */ | |
c906108c SS |
177 | if (c == '\t') |
178 | { | |
179 | int j, maxTabLen = tuiDefaultTabLen (); | |
180 | ||
181 | for (j = i - ( | |
182 | (i / maxTabLen) * maxTabLen); | |
183 | ((j < maxTabLen) && | |
184 | i < threshold); | |
185 | i++, j++) | |
186 | srcLine[i] = ' '; | |
187 | i--; | |
188 | } | |
189 | else | |
190 | srcLine[i] = c; | |
191 | } | |
192 | srcLine[i + 1] = 0; | |
193 | } | |
194 | else | |
98427f35 SC |
195 | { /* If we have not reached EOL, then eat |
196 | chars until we do */ | |
c906108c SS |
197 | while (c != EOF && c != '\n' && c != '\r') |
198 | c = fgetc (stream); | |
199 | } | |
200 | } | |
201 | while (c != EOF && c != '\n' && c != '\r' && | |
202 | i < threshold && (c = fgetc (stream))); | |
203 | } | |
204 | /* Now copy the line taking the offset into account */ | |
205 | if (strlen (srcLine) > offset) | |
206 | strcpy (((TuiWinElementPtr) srcWin->generic.content[ | |
207 | curLine])->whichElement.source.line, | |
208 | &srcLine[offset]); | |
209 | else | |
210 | ((TuiWinElementPtr) | |
211 | srcWin->generic.content[ | |
212 | curLine])->whichElement.source.line[0] = (char) 0; | |
213 | curLine++; | |
214 | curLineNo++; | |
215 | } | |
216 | if (offset > 0) | |
217 | tuiFree (srcLine); | |
218 | fclose (stream); | |
219 | srcWin->generic.contentSize = nlines; | |
220 | ret = TUI_SUCCESS; | |
221 | } | |
222 | } | |
223 | } | |
224 | } | |
225 | return ret; | |
98427f35 | 226 | } |
c906108c SS |
227 | |
228 | ||
229 | /* elz: this function sets the contents of the source window to empty | |
230 | except for a line in the middle with a warning message about the | |
231 | source not being available. This function is called by | |
232 | tuiEraseSourceContents, which in turn is invoked when the source files | |
c5aa993b | 233 | cannot be accessed */ |
c906108c SS |
234 | |
235 | void | |
eca6576c | 236 | tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string) |
c906108c SS |
237 | { |
238 | int lineWidth; | |
239 | int nLines; | |
240 | int curr_line = 0; | |
241 | ||
242 | lineWidth = winInfo->generic.width - 1; | |
243 | nLines = winInfo->generic.height - 2; | |
244 | ||
245 | /* set to empty each line in the window, except for the one | |
c5aa993b | 246 | which contains the message */ |
c906108c SS |
247 | while (curr_line < winInfo->generic.contentSize) |
248 | { | |
249 | /* set the information related to each displayed line | |
c5aa993b JM |
250 | to null: i.e. the line number is 0, there is no bp, |
251 | it is not where the program is stopped */ | |
c906108c SS |
252 | |
253 | TuiWinElementPtr element = | |
254 | (TuiWinElementPtr) winInfo->generic.content[curr_line]; | |
255 | element->whichElement.source.lineOrAddr.lineNo = 0; | |
256 | element->whichElement.source.isExecPoint = FALSE; | |
257 | element->whichElement.source.hasBreak = FALSE; | |
258 | ||
c5aa993b | 259 | /* set the contents of the line to blank */ |
c906108c SS |
260 | element->whichElement.source.line[0] = (char) 0; |
261 | ||
262 | /* if the current line is in the middle of the screen, then we want to | |
c5aa993b JM |
263 | display the 'no source available' message in it. |
264 | Note: the 'weird' arithmetic with the line width and height comes from | |
265 | the function tuiEraseSourceContent. We need to keep the screen and the | |
266 | window's actual contents in synch */ | |
c906108c SS |
267 | |
268 | if (curr_line == (nLines / 2 + 1)) | |
269 | { | |
270 | int i; | |
271 | int xpos; | |
272 | int warning_length = strlen (warning_string); | |
273 | char *srcLine; | |
274 | ||
275 | srcLine = element->whichElement.source.line; | |
276 | ||
277 | if (warning_length >= ((lineWidth - 1) / 2)) | |
278 | xpos = 1; | |
279 | else | |
280 | xpos = (lineWidth - 1) / 2 - warning_length; | |
281 | ||
282 | for (i = 0; i < xpos; i++) | |
283 | srcLine[i] = ' '; | |
284 | ||
285 | sprintf (srcLine + i, "%s", warning_string); | |
286 | ||
287 | for (i = xpos + warning_length; i < lineWidth; i++) | |
288 | srcLine[i] = ' '; | |
289 | ||
290 | srcLine[i] = '\n'; | |
291 | ||
292 | } /* end if */ | |
293 | ||
294 | curr_line++; | |
295 | ||
c5aa993b | 296 | } /* end while */ |
98427f35 | 297 | } |
c906108c SS |
298 | |
299 | ||
98427f35 SC |
300 | /* Function to display source in the source window. This function |
301 | initializes the horizontal scroll to 0. */ | |
c906108c | 302 | void |
a4b99e53 | 303 | tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror) |
c906108c SS |
304 | { |
305 | srcWin->detail.sourceInfo.horizontalOffset = 0; | |
a4b99e53 | 306 | tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror); |
98427f35 | 307 | } |
c906108c | 308 | |
c906108c | 309 | |
98427f35 | 310 | /* Answer whether the source is currently displayed in the source window. */ |
c906108c | 311 | int |
eca6576c | 312 | tuiSourceIsDisplayed (char *fname) |
c906108c SS |
313 | { |
314 | return (srcWin->generic.contentInUse && | |
315 | (strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())-> | |
316 | content[0])->whichElement.locator.fileName, fname) == 0)); | |
98427f35 | 317 | } |
c906108c SS |
318 | |
319 | ||
98427f35 | 320 | /* Scroll the source forward or backward vertically. */ |
c906108c | 321 | void |
a4b99e53 SC |
322 | tuiVerticalSourceScroll (TuiScrollDirection scrollDirection, |
323 | int numToScroll) | |
c906108c SS |
324 | { |
325 | if (srcWin->generic.content != (OpaquePtr) NULL) | |
326 | { | |
a4b99e53 | 327 | TuiLineOrAddress l; |
c906108c SS |
328 | struct symtab *s; |
329 | TuiWinContent content = (TuiWinContent) srcWin->generic.content; | |
52575520 | 330 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
c906108c | 331 | |
52575520 | 332 | if (cursal.symtab == (struct symtab *) NULL) |
f70a7d61 | 333 | s = find_pc_symtab (get_frame_pc (deprecated_selected_frame)); |
c906108c | 334 | else |
52575520 | 335 | s = cursal.symtab; |
c906108c SS |
336 | |
337 | if (scrollDirection == FORWARD_SCROLL) | |
338 | { | |
a4b99e53 | 339 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo + |
c906108c | 340 | numToScroll; |
a4b99e53 | 341 | if (l.lineNo > s->nlines) |
c5aa993b JM |
342 | /*line = s->nlines - winInfo->generic.contentSize + 1; */ |
343 | /*elz: fix for dts 23398 */ | |
a4b99e53 | 344 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo; |
c906108c SS |
345 | } |
346 | else | |
347 | { | |
a4b99e53 | 348 | l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo - |
c906108c | 349 | numToScroll; |
a4b99e53 SC |
350 | if (l.lineNo <= 0) |
351 | l.lineNo = 1; | |
c906108c | 352 | } |
27229e99 SC |
353 | |
354 | print_source_lines (s, l.lineNo, l.lineNo + 1, 0); | |
c906108c | 355 | } |
98427f35 | 356 | } |