1 |
pcg |
1.1 |
/* |
2 |
|
|
* Copyright 2001 by Marco d'Itri <md@linux.it> |
3 |
pcg |
1.29 |
* Copyright 2000,2001,2002,2003,2004 |
4 |
|
|
* Marc Lehmann <pcg@goof.com>, |
5 |
|
|
* and many others, see README |
6 |
|
|
* |
7 |
|
|
* Original version by Mike Baker. |
8 |
pcg |
1.1 |
* |
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 |
11 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
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 |
20 |
|
|
* along with this program; if not, write to the Free Software |
21 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
22 |
|
|
*/ |
23 |
|
|
|
24 |
|
|
#include "config.h" |
25 |
|
|
#include <stdlib.h> |
26 |
|
|
#include <stdio.h> |
27 |
|
|
#include <unistd.h> |
28 |
|
|
#include <string.h> |
29 |
|
|
#include <signal.h> |
30 |
|
|
#include <time.h> |
31 |
|
|
#include <fcntl.h> |
32 |
|
|
#include <errno.h> |
33 |
|
|
#include <sys/time.h> |
34 |
|
|
#include <sys/stat.h> |
35 |
|
|
#include <sys/types.h> |
36 |
pcg |
1.7 |
#include <locale.h> |
37 |
pcg |
1.11 |
#include <ctype.h> |
38 |
|
|
#include <stdarg.h> |
39 |
chris_moore |
1.26 |
#include <X11/Xlib.h> |
40 |
|
|
#include <X11/Xatom.h> |
41 |
|
|
#include <X11/Xutil.h> |
42 |
|
|
|
43 |
pcg |
1.1 |
#if HAS_REGEX |
44 |
|
|
#include <regex.h> |
45 |
|
|
#endif |
46 |
|
|
|
47 |
chris_moore |
1.27 |
#define SHADE_X 2 |
48 |
|
|
#define SHADE_Y 2 |
49 |
|
|
|
50 |
pcg |
1.1 |
/* data structures */ |
51 |
pcg |
1.11 |
struct logfile_entry |
52 |
|
|
{ |
53 |
|
|
struct logfile_entry *next; |
54 |
|
|
|
55 |
|
|
char *fname; /* name of file */ |
56 |
|
|
char *desc; /* alternative description */ |
57 |
|
|
char *buf; /* text read but not yet displayed */ |
58 |
|
|
FILE *fp; /* FILE struct associated with file */ |
59 |
|
|
ino_t inode; /* inode of the file opened */ |
60 |
|
|
off_t last_size; /* file size at the last check */ |
61 |
|
|
unsigned long color; /* color to be used for printing */ |
62 |
|
|
int partial; /* true if the last line isn't complete */ |
63 |
|
|
int lastpartial; /* true if the previous output wasn't complete */ |
64 |
|
|
int index; /* index into linematrix of a partial line */ |
65 |
chris_moore |
1.28 |
int modified; /* true if line is modified & needs displaying */ |
66 |
pcg |
1.1 |
}; |
67 |
|
|
|
68 |
pcg |
1.11 |
struct linematrix |
69 |
|
|
{ |
70 |
|
|
char *line; |
71 |
pcg |
1.12 |
int len; |
72 |
pcg |
1.11 |
unsigned long color; |
73 |
pcg |
1.1 |
}; |
74 |
|
|
|
75 |
chris_moore |
1.28 |
struct displaymatrix |
76 |
|
|
{ |
77 |
|
|
char *line; |
78 |
|
|
int len; |
79 |
|
|
int buffer_size; |
80 |
|
|
}; |
81 |
|
|
|
82 |
pcg |
1.1 |
/* global variables */ |
83 |
pcg |
1.12 |
struct linematrix *lines; |
84 |
chris_moore |
1.28 |
struct displaymatrix *display; |
85 |
pcg |
1.11 |
int width = STD_WIDTH, height = STD_HEIGHT, listlen; |
86 |
pcg |
1.1 |
int win_x = LOC_X, win_y = LOC_Y; |
87 |
pcg |
1.22 |
int font_ascent, font_height; |
88 |
chris_moore |
1.27 |
int effect_x_space, effect_y_space; /* how much space does shading / outlining take up */ |
89 |
|
|
int effect_x_offset, effect_y_offset; /* and how does it offset the usable space */ |
90 |
pcg |
1.1 |
int do_reopen; |
91 |
pcg |
1.21 |
struct timeval interval = { 2, 400000 }; |
92 |
pcg |
1.7 |
XFontSet fontset; |
93 |
pcg |
1.1 |
|
94 |
|
|
/* command line options */ |
95 |
pcg |
1.5 |
int opt_noinitial, opt_shade, opt_frame, opt_reverse, opt_nofilename, |
96 |
chris_moore |
1.24 |
opt_outline, opt_noflicker, opt_whole, opt_update, opt_wordwrap, |
97 |
|
|
geom_mask, reload = 0; |
98 |
pcg |
1.1 |
const char *command = NULL, |
99 |
pcg |
1.11 |
*fontname = USE_FONT, *dispname = NULL, *def_color = DEF_COLOR, |
100 |
|
|
*continuation = "[+]"; |
101 |
pcg |
1.1 |
|
102 |
|
|
struct logfile_entry *loglist = NULL, *loglist_tail = NULL; |
103 |
|
|
|
104 |
|
|
Display *disp; |
105 |
|
|
Window root; |
106 |
|
|
GC WinGC; |
107 |
|
|
|
108 |
|
|
#if HAS_REGEX |
109 |
pcg |
1.11 |
struct re_list |
110 |
|
|
{ |
111 |
|
|
regex_t from; |
112 |
|
|
const char *to; |
113 |
|
|
struct re_list *next; |
114 |
pcg |
1.1 |
}; |
115 |
|
|
struct re_list *re_head, *re_tail; |
116 |
chris_moore |
1.26 |
char *transform_to = NULL; |
117 |
|
|
regex_t *transformre; |
118 |
pcg |
1.1 |
#endif |
119 |
|
|
|
120 |
|
|
|
121 |
|
|
/* prototypes */ |
122 |
pcg |
1.11 |
void list_files (int); |
123 |
|
|
void force_reopen (int); |
124 |
|
|
void force_refresh (int); |
125 |
|
|
void blank_window (int); |
126 |
|
|
|
127 |
|
|
void InitWindow (void); |
128 |
|
|
unsigned long GetColor (const char *); |
129 |
chris_moore |
1.28 |
void redraw (int); |
130 |
|
|
void refresh (int, int, int, int); |
131 |
pcg |
1.11 |
|
132 |
|
|
void transform_line (char *s); |
133 |
|
|
int lineinput (struct logfile_entry *); |
134 |
|
|
void reopen (void); |
135 |
|
|
void check_open_files (void); |
136 |
|
|
FILE *openlog (struct logfile_entry *); |
137 |
pcg |
1.12 |
static void main_loop (void); |
138 |
pcg |
1.11 |
|
139 |
|
|
void display_version (void); |
140 |
|
|
void display_help (char *); |
141 |
|
|
void install_signal (int, void (*)(int)); |
142 |
|
|
void *xstrdup (const char *); |
143 |
|
|
void *xmalloc (size_t); |
144 |
chris_moore |
1.28 |
void *xrealloc (void *, size_t); |
145 |
pcg |
1.11 |
int daemonize (void); |
146 |
pcg |
1.1 |
|
147 |
|
|
/* signal handlers */ |
148 |
pcg |
1.11 |
void |
149 |
|
|
list_files (int dummy) |
150 |
pcg |
1.1 |
{ |
151 |
pcg |
1.11 |
struct logfile_entry *e; |
152 |
pcg |
1.1 |
|
153 |
pcg |
1.11 |
fprintf (stderr, "Files opened:\n"); |
154 |
|
|
for (e = loglist; e; e = e->next) |
155 |
|
|
fprintf (stderr, "\t%s (%s)\n", e->fname, e->desc); |
156 |
pcg |
1.1 |
} |
157 |
|
|
|
158 |
pcg |
1.11 |
void |
159 |
|
|
force_reopen (int dummy) |
160 |
pcg |
1.1 |
{ |
161 |
pcg |
1.11 |
do_reopen = 1; |
162 |
pcg |
1.1 |
} |
163 |
|
|
|
164 |
pcg |
1.11 |
void |
165 |
|
|
force_refresh (int dummy) |
166 |
pcg |
1.1 |
{ |
167 |
chris_moore |
1.28 |
redraw (1); |
168 |
pcg |
1.1 |
} |
169 |
|
|
|
170 |
pcg |
1.11 |
void |
171 |
|
|
blank_window (int dummy) |
172 |
pcg |
1.1 |
{ |
173 |
pcg |
1.19 |
XClearArea (disp, root, win_x - 2, win_y - 2, width + 5, height + 5, False); |
174 |
pcg |
1.11 |
XFlush (disp); |
175 |
|
|
exit (0); |
176 |
pcg |
1.1 |
} |
177 |
|
|
|
178 |
|
|
/* X related functions */ |
179 |
pcg |
1.11 |
unsigned long |
180 |
|
|
GetColor (const char *ColorName) |
181 |
pcg |
1.1 |
{ |
182 |
pcg |
1.11 |
XColor Color; |
183 |
|
|
XWindowAttributes Attributes; |
184 |
pcg |
1.1 |
|
185 |
pcg |
1.11 |
XGetWindowAttributes (disp, root, &Attributes); |
186 |
|
|
Color.pixel = 0; |
187 |
pcg |
1.8 |
|
188 |
pcg |
1.11 |
if (!XParseColor (disp, Attributes.colormap, ColorName, &Color)) |
189 |
|
|
fprintf (stderr, "can't parse %s\n", ColorName); |
190 |
|
|
else if (!XAllocColor (disp, Attributes.colormap, &Color)) |
191 |
|
|
fprintf (stderr, "can't allocate %s\n", ColorName); |
192 |
pcg |
1.8 |
|
193 |
pcg |
1.11 |
return Color.pixel; |
194 |
pcg |
1.1 |
} |
195 |
|
|
|
196 |
pcg |
1.11 |
static Window |
197 |
|
|
root_window (Display * display, int screen_number) |
198 |
pcg |
1.7 |
{ |
199 |
pcg |
1.11 |
Atom SWM_VROOT = XInternAtom (display, "__SWM_VROOT", False); |
200 |
pcg |
1.7 |
Window real_root_window = RootWindow (display, screen_number); |
201 |
|
|
|
202 |
pcg |
1.11 |
if (root) /* root window set via option */ |
203 |
pcg |
1.8 |
return root; |
204 |
|
|
|
205 |
pcg |
1.11 |
if (SWM_VROOT != None) |
206 |
pcg |
1.7 |
{ |
207 |
|
|
Window unused, *windows; |
208 |
|
|
unsigned int count; |
209 |
|
|
|
210 |
|
|
if (XQueryTree (display, real_root_window, &unused, &unused, &windows, |
211 |
pcg |
1.11 |
&count)) |
212 |
|
|
{ |
213 |
|
|
int i; |
214 |
|
|
|
215 |
|
|
for (i = 0; i < count; i++) |
216 |
|
|
{ |
217 |
|
|
Atom type; |
218 |
|
|
int format; |
219 |
|
|
unsigned long nitems, bytes_after_return; |
220 |
|
|
unsigned char *virtual_root_window; |
221 |
|
|
|
222 |
|
|
if (XGetWindowProperty (display, windows[i], SWM_VROOT, |
223 |
|
|
0, 1, False, XA_WINDOW, &type, &format, |
224 |
|
|
&nitems, &bytes_after_return, |
225 |
|
|
&virtual_root_window) == Success) |
226 |
|
|
{ |
227 |
|
|
if (type != None) |
228 |
|
|
{ |
229 |
|
|
if (type == XA_WINDOW) |
230 |
|
|
{ |
231 |
|
|
XFree (windows); |
232 |
|
|
return (Window) virtual_root_window; |
233 |
|
|
} |
234 |
|
|
else |
235 |
|
|
fprintf (stderr, |
236 |
|
|
"__SWM_VROOT property type mismatch"); |
237 |
|
|
} |
238 |
|
|
} |
239 |
|
|
else |
240 |
|
|
fprintf (stderr, |
241 |
|
|
"failed to get __SWM_VROOT property on window 0x%lx", |
242 |
|
|
windows[i]); |
243 |
|
|
} |
244 |
|
|
|
245 |
|
|
if (count) |
246 |
|
|
XFree (windows); |
247 |
|
|
} |
248 |
pcg |
1.7 |
else |
249 |
pcg |
1.11 |
fprintf (stderr, "Can't query tree on root window 0x%lx", |
250 |
|
|
real_root_window); |
251 |
pcg |
1.7 |
} |
252 |
|
|
else |
253 |
|
|
/* This shouldn't happen. The Xlib documentation is wrong BTW. */ |
254 |
|
|
fprintf (stderr, "Can't intern atom __SWM_VROOT"); |
255 |
|
|
|
256 |
|
|
return real_root_window; |
257 |
|
|
} |
258 |
|
|
|
259 |
pcg |
1.11 |
void |
260 |
|
|
InitWindow (void) |
261 |
pcg |
1.1 |
{ |
262 |
pcg |
1.11 |
XGCValues gcv; |
263 |
|
|
unsigned long gcm; |
264 |
|
|
int screen, ScreenWidth, ScreenHeight; |
265 |
|
|
|
266 |
|
|
if (!(disp = XOpenDisplay (dispname))) |
267 |
|
|
{ |
268 |
|
|
fprintf (stderr, "Can't open display %s.\n", dispname); |
269 |
|
|
exit (1); |
270 |
|
|
} |
271 |
|
|
|
272 |
|
|
screen = DefaultScreen (disp); |
273 |
|
|
ScreenHeight = DisplayHeight (disp, screen); |
274 |
|
|
ScreenWidth = DisplayWidth (disp, screen); |
275 |
|
|
|
276 |
|
|
root = root_window (disp, screen); |
277 |
|
|
|
278 |
|
|
gcm = GCBackground; |
279 |
|
|
gcv.graphics_exposures = True; |
280 |
|
|
WinGC = XCreateGC (disp, root, gcm, &gcv); |
281 |
|
|
XMapWindow (disp, root); |
282 |
|
|
XSetForeground (disp, WinGC, GetColor (DEF_COLOR)); |
283 |
|
|
|
284 |
|
|
{ |
285 |
|
|
char **missing_charset_list; |
286 |
|
|
int missing_charset_count; |
287 |
|
|
char *def_string; |
288 |
|
|
|
289 |
|
|
fontset = XCreateFontSet (disp, fontname, |
290 |
|
|
&missing_charset_list, &missing_charset_count, |
291 |
|
|
&def_string); |
292 |
|
|
|
293 |
|
|
if (missing_charset_count) |
294 |
|
|
{ |
295 |
|
|
fprintf (stderr, |
296 |
|
|
"Missing charsets in String to FontSet conversion (%s)\n", |
297 |
|
|
missing_charset_list[0]); |
298 |
|
|
XFreeStringList (missing_charset_list); |
299 |
|
|
} |
300 |
|
|
} |
301 |
|
|
|
302 |
|
|
if (!fontset) |
303 |
|
|
{ |
304 |
|
|
fprintf (stderr, "unable to create fontset, exiting.\n"); |
305 |
|
|
exit (1); |
306 |
|
|
} |
307 |
|
|
|
308 |
|
|
{ |
309 |
|
|
XFontSetExtents *xfe = XExtentsOfFontSet (fontset); |
310 |
|
|
|
311 |
|
|
font_height = xfe->max_logical_extent.height; |
312 |
pcg |
1.22 |
font_ascent = -xfe->max_logical_extent.y; |
313 |
pcg |
1.11 |
} |
314 |
|
|
|
315 |
|
|
if (geom_mask & XNegative) |
316 |
|
|
win_x = win_x + ScreenWidth - width; |
317 |
|
|
if (geom_mask & YNegative) |
318 |
|
|
win_y = win_y + ScreenHeight - height; |
319 |
|
|
|
320 |
chris_moore |
1.27 |
if (opt_outline) |
321 |
|
|
{ |
322 |
|
|
/* adding outline increases the total width and height by 2 |
323 |
|
|
pixels each, and offsets the text one pixel right and one |
324 |
|
|
pixel down */ |
325 |
|
|
effect_x_space = effect_y_space = 2; |
326 |
|
|
effect_x_offset = effect_y_offset = 1; |
327 |
|
|
} |
328 |
|
|
else if (opt_shade) |
329 |
|
|
{ |
330 |
|
|
/* adding a shadow increases the space used */ |
331 |
|
|
effect_x_space = abs(SHADE_X); |
332 |
|
|
effect_y_space = abs(SHADE_Y); |
333 |
|
|
/* if the shadow is to the right and below then we don't need |
334 |
|
|
* to move the text to make space for it, but shadows to the left |
335 |
|
|
* and above need accomodating */ |
336 |
|
|
effect_x_offset = SHADE_X > 0 ? 0 : -SHADE_X; |
337 |
|
|
effect_y_offset = SHADE_Y > 0 ? 0 : -SHADE_Y; |
338 |
|
|
} |
339 |
|
|
else |
340 |
|
|
{ |
341 |
|
|
effect_x_space = effect_y_space = 0; |
342 |
|
|
effect_x_offset = effect_y_offset = 0; |
343 |
|
|
} |
344 |
|
|
|
345 |
|
|
/* if we are using -shade or -outline, there will be less usable |
346 |
|
|
* space for output */ |
347 |
|
|
listlen = (height - effect_y_space) / font_height; |
348 |
pcg |
1.1 |
|
349 |
pcg |
1.11 |
if (!listlen) |
350 |
|
|
{ |
351 |
|
|
fprintf (stderr, "height too small for a single line, setting to %d\n", |
352 |
|
|
font_height); |
353 |
|
|
listlen = 1; |
354 |
|
|
} |
355 |
|
|
|
356 |
chris_moore |
1.27 |
/* leave the height how the user requested it. it might not all be |
357 |
|
|
* used, but this will allow the geometry to be tuned more accurately |
358 |
|
|
* (with the -frame option) |
359 |
|
|
* the old code did this: |
360 |
|
|
* height = listlen * font_height + effect_y_space; */ |
361 |
|
|
|
362 |
pcg |
1.11 |
XSelectInput (disp, root, ExposureMask | FocusChangeMask); |
363 |
pcg |
1.1 |
} |
364 |
|
|
|
365 |
|
|
/* |
366 |
chris_moore |
1.28 |
* if redraw() is passwd a non-zero argument, it does a complete |
367 |
|
|
* redraw, rather than an update. if the argument is zero (and |
368 |
|
|
* -noflicker is in effect) then only the lines which have changed |
369 |
|
|
* since the last draw are redrawn. |
370 |
|
|
* |
371 |
pcg |
1.1 |
* the rest is handled by regular refresh()'es |
372 |
|
|
*/ |
373 |
pcg |
1.11 |
void |
374 |
chris_moore |
1.28 |
redraw (int redraw_all) |
375 |
pcg |
1.1 |
{ |
376 |
pcg |
1.20 |
XSetClipMask (disp, WinGC, None); |
377 |
chris_moore |
1.28 |
refresh (0, 32768, 1, redraw_all); |
378 |
pcg |
1.1 |
} |
379 |
|
|
|
380 |
|
|
/* Just redraw everything without clearing (i.e. after an EXPOSE event) */ |
381 |
pcg |
1.11 |
void |
382 |
chris_moore |
1.28 |
refresh (int miny, int maxy, int clear, int refresh_all) |
383 |
pcg |
1.1 |
{ |
384 |
pcg |
1.11 |
int lin; |
385 |
pcg |
1.29 |
int offset = listlen * font_height + font_ascent + effect_y_offset; |
386 |
pcg |
1.11 |
unsigned long black_color = GetColor ("black"); |
387 |
pcg |
1.1 |
|
388 |
pcg |
1.11 |
miny -= win_y + font_height; |
389 |
|
|
maxy -= win_y - font_height; |
390 |
pcg |
1.1 |
|
391 |
pcg |
1.22 |
if (clear && !opt_noflicker) |
392 |
|
|
XClearArea (disp, root, win_x, win_y, width, height, False); |
393 |
|
|
|
394 |
pcg |
1.11 |
for (lin = listlen; lin--;) |
395 |
|
|
{ |
396 |
pcg |
1.12 |
struct linematrix *line = lines + (opt_reverse ? listlen - lin - 1 : lin); |
397 |
chris_moore |
1.28 |
struct displaymatrix *display_line = display + lin; |
398 |
pcg |
1.7 |
|
399 |
pcg |
1.11 |
offset -= font_height; |
400 |
pcg |
1.7 |
|
401 |
pcg |
1.11 |
if (offset < miny || offset > maxy) |
402 |
|
|
continue; |
403 |
jebusbfb |
1.4 |
|
404 |
pcg |
1.29 |
/* if this line is a different than it was, then it |
405 |
|
|
* needs displaying */ |
406 |
chris_moore |
1.30 |
if (!opt_noflicker |
407 |
|
|
|| refresh_all |
408 |
pcg |
1.29 |
|| display_line->len != line->len |
409 |
|
|
|| memcmp (display_line->line, line->line, line->len)) |
410 |
|
|
{ |
411 |
chris_moore |
1.30 |
/* don't bother updating the record of what has been |
412 |
|
|
* displayed if -noflicker isn't in effect, since we redraw |
413 |
|
|
* the whole display every time anyway */ |
414 |
|
|
if (opt_noflicker) |
415 |
|
|
{ |
416 |
|
|
/* update the record of what has been displayed; |
417 |
|
|
* first make sure the buffer is big enough */ |
418 |
|
|
if (display_line->buffer_size <= line->len) |
419 |
|
|
{ |
420 |
|
|
display_line->buffer_size = line->len + 1; |
421 |
|
|
display_line->line = xrealloc (display_line->line, display_line->buffer_size); |
422 |
|
|
} |
423 |
pcg |
1.29 |
|
424 |
chris_moore |
1.30 |
display_line->len = line->len; |
425 |
|
|
memcpy (display_line->line, line->line, line->len); |
426 |
chris_moore |
1.28 |
|
427 |
chris_moore |
1.30 |
if (clear) |
428 |
|
|
XClearArea (disp, root, win_x, win_y + offset - font_ascent, |
429 |
|
|
width + effect_x_space, font_height + effect_y_space, False); |
430 |
|
|
} |
431 |
pcg |
1.22 |
|
432 |
pcg |
1.29 |
if (opt_outline) |
433 |
|
|
{ |
434 |
|
|
int x, y; |
435 |
|
|
XSetForeground (disp, WinGC, black_color); |
436 |
chris_moore |
1.28 |
|
437 |
pcg |
1.29 |
for (x = -1; x < 2; x += 2) |
438 |
|
|
for (y = -1; y < 2; y += 2) |
439 |
|
|
XmbDrawString (disp, root, fontset, WinGC, |
440 |
|
|
win_x + effect_x_offset + x, |
441 |
|
|
win_y + y + offset, |
442 |
|
|
line->line, line->len); |
443 |
|
|
} |
444 |
|
|
else if (opt_shade) |
445 |
|
|
{ |
446 |
|
|
XSetForeground (disp, WinGC, black_color); |
447 |
|
|
XmbDrawString (disp, root, fontset, WinGC, |
448 |
|
|
win_x + effect_x_offset + SHADE_X, |
449 |
|
|
win_y + offset + SHADE_Y, |
450 |
|
|
line->line, line->len); |
451 |
|
|
} |
452 |
chris_moore |
1.27 |
|
453 |
pcg |
1.29 |
XSetForeground (disp, WinGC, line->color); |
454 |
|
|
XmbDrawString (disp, root, fontset, WinGC, |
455 |
|
|
win_x + effect_x_offset, |
456 |
|
|
win_y + offset, |
457 |
|
|
line->line, line->len); |
458 |
chris_moore |
1.28 |
} |
459 |
pcg |
1.1 |
} |
460 |
|
|
|
461 |
pcg |
1.11 |
if (opt_frame) |
462 |
pcg |
1.15 |
{ |
463 |
|
|
XSetForeground (disp, WinGC, GetColor (def_color)); |
464 |
chris_moore |
1.27 |
XDrawRectangle (disp, root, WinGC, win_x - 0, win_y - 0, width - 1, height - 1); |
465 |
pcg |
1.15 |
} |
466 |
pcg |
1.1 |
} |
467 |
|
|
|
468 |
|
|
#if HAS_REGEX |
469 |
pcg |
1.11 |
void |
470 |
|
|
transform_line (char *s) |
471 |
pcg |
1.1 |
{ |
472 |
|
|
#ifdef I_AM_Md |
473 |
pcg |
1.11 |
int i; |
474 |
|
|
if (1) |
475 |
|
|
{ |
476 |
|
|
for (i = 16; s[i]; i++) |
477 |
|
|
s[i] = s[i + 11]; |
478 |
pcg |
1.1 |
} |
479 |
pcg |
1.11 |
s[i + 1] = '\0'; |
480 |
pcg |
1.1 |
#endif |
481 |
|
|
|
482 |
pcg |
1.11 |
if (transformre) |
483 |
|
|
{ |
484 |
|
|
int i; |
485 |
|
|
regmatch_t matched[16]; |
486 |
|
|
|
487 |
chris_moore |
1.26 |
i = regexec (transformre, s, 16, matched, 0); |
488 |
pcg |
1.11 |
if (i == 0) |
489 |
|
|
{ /* matched */ |
490 |
chris_moore |
1.26 |
int match_start = matched[0].rm_so; |
491 |
|
|
int match_end = matched[0].rm_eo; |
492 |
|
|
int old_len = match_end - match_start; |
493 |
|
|
int new_len = strlen(transform_to); |
494 |
|
|
int old_whole_len = strlen(s); |
495 |
|
|
printf("regexp was matched by '%s' - replace with '%s'\n", s, transform_to); |
496 |
|
|
printf("match is from %d to %d\n", |
497 |
|
|
match_start, match_end); |
498 |
|
|
if (new_len > old_len) { |
499 |
chris_moore |
1.28 |
s = xrealloc(s, old_whole_len + new_len - old_len); |
500 |
chris_moore |
1.26 |
} |
501 |
|
|
if (new_len != old_len) { |
502 |
|
|
memcpy(s + match_end + new_len - old_len, |
503 |
|
|
s + match_end, |
504 |
|
|
old_whole_len - match_end); |
505 |
|
|
s[old_whole_len + new_len - old_len] = '\0'; |
506 |
|
|
} |
507 |
|
|
memcpy(s + match_start, |
508 |
|
|
transform_to, |
509 |
|
|
new_len); |
510 |
|
|
printf("transformed to '%s'\n", s); |
511 |
pcg |
1.11 |
} |
512 |
chris_moore |
1.26 |
else |
513 |
|
|
{ |
514 |
|
|
printf("regexp was not matched by '%s'\n", s); |
515 |
|
|
} |
516 |
pcg |
1.1 |
} |
517 |
|
|
} |
518 |
|
|
#endif |
519 |
|
|
|
520 |
pcg |
1.12 |
char * |
521 |
|
|
concat_line (const char *p1, const char *p2) |
522 |
|
|
{ |
523 |
|
|
int l1 = p1 ? strlen (p1) : 0; |
524 |
|
|
int l2 = strlen (p2); |
525 |
|
|
char *r = xmalloc (l1 + l2 + 1); |
526 |
|
|
|
527 |
|
|
memcpy (r, p1, l1); |
528 |
|
|
memcpy (r + l1, p2, l2); |
529 |
|
|
r[l1 + l2] = 0; |
530 |
|
|
|
531 |
|
|
return r; |
532 |
|
|
} |
533 |
pcg |
1.1 |
|
534 |
|
|
/* |
535 |
chris_moore |
1.32 |
* HACK-1: This routine should read a single line, no matter how long. |
536 |
pcg |
1.1 |
*/ |
537 |
pcg |
1.11 |
int |
538 |
|
|
lineinput (struct logfile_entry *logfile) |
539 |
pcg |
1.1 |
{ |
540 |
pcg |
1.12 |
char buff[1024], *p = buff; |
541 |
|
|
int ch; |
542 |
chris_moore |
1.32 |
/* HACK-2: add on the length of any partial line which we will be appending to */ |
543 |
pcg |
1.12 |
int ofs = logfile->buf ? strlen (logfile->buf) : 0; |
544 |
pcg |
1.1 |
|
545 |
pcg |
1.11 |
do |
546 |
|
|
{ |
547 |
pcg |
1.12 |
ch = fgetc (logfile->fp); |
548 |
pcg |
1.1 |
|
549 |
pcg |
1.18 |
if (ch == '\n' || ch == EOF) |
550 |
|
|
break; |
551 |
pcg |
1.17 |
else if (ch == '\r') |
552 |
pcg |
1.18 |
continue; /* skip */ |
553 |
pcg |
1.12 |
else if (ch == '\t') |
554 |
|
|
{ |
555 |
|
|
do |
556 |
|
|
{ |
557 |
|
|
*p++ = ' '; |
558 |
|
|
ofs++; |
559 |
|
|
} |
560 |
|
|
while (ofs & 7); |
561 |
|
|
} |
562 |
|
|
else |
563 |
|
|
{ |
564 |
|
|
*p++ = ch; |
565 |
|
|
ofs++; |
566 |
|
|
} |
567 |
pcg |
1.11 |
} |
568 |
pcg |
1.12 |
while (p < buff + (sizeof buff) - 8 - 1); |
569 |
pcg |
1.1 |
|
570 |
pcg |
1.19 |
if (p == buff && ch == EOF) |
571 |
pcg |
1.12 |
return 0; |
572 |
|
|
|
573 |
|
|
*p = 0; |
574 |
|
|
|
575 |
|
|
p = concat_line (logfile->buf, buff); |
576 |
|
|
free (logfile->buf); logfile->buf = p; |
577 |
chris_moore |
1.9 |
|
578 |
pcg |
1.12 |
logfile->lastpartial = logfile->partial; |
579 |
chris_moore |
1.25 |
/* there are 3 ways we could have exited the loop: reading '\n', |
580 |
|
|
* reaching EOF, or filling the buffer; the 2nd and 3rd of these |
581 |
|
|
* both result in a partial line */ |
582 |
|
|
logfile->partial = ch != '\n'; |
583 |
pcg |
1.12 |
|
584 |
|
|
if (logfile->partial && opt_whole) |
585 |
pcg |
1.11 |
return 0; |
586 |
pcg |
1.1 |
|
587 |
|
|
#if HAS_REGEX |
588 |
pcg |
1.12 |
transform_line (logfile->buf); |
589 |
pcg |
1.1 |
#endif |
590 |
pcg |
1.12 |
return 1; |
591 |
pcg |
1.1 |
} |
592 |
|
|
|
593 |
|
|
/* input: reads file->fname |
594 |
|
|
* output: fills file->fp, file->inode |
595 |
|
|
* returns file->fp |
596 |
|
|
* in case of error, file->fp is NULL |
597 |
|
|
*/ |
598 |
pcg |
1.11 |
FILE * |
599 |
|
|
openlog (struct logfile_entry * file) |
600 |
|
|
{ |
601 |
|
|
struct stat stats; |
602 |
|
|
|
603 |
|
|
if ((file->fp = fopen (file->fname, "r")) == NULL) |
604 |
|
|
{ |
605 |
|
|
file->fp = NULL; |
606 |
|
|
return NULL; |
607 |
|
|
} |
608 |
|
|
|
609 |
|
|
fstat (fileno (file->fp), &stats); |
610 |
|
|
if (S_ISFIFO (stats.st_mode)) |
611 |
|
|
{ |
612 |
|
|
if (fcntl (fileno (file->fp), F_SETFL, O_NONBLOCK) < 0) |
613 |
|
|
perror ("fcntl"), exit (1); |
614 |
|
|
file->inode = 0; |
615 |
|
|
} |
616 |
|
|
else |
617 |
|
|
file->inode = stats.st_ino; |
618 |
|
|
|
619 |
|
|
if (opt_noinitial) |
620 |
|
|
fseek (file->fp, 0, SEEK_END); |
621 |
|
|
else if (stats.st_size > (listlen + 1) * width) |
622 |
|
|
fseek (file->fp, -((listlen + 2) * width), SEEK_END); |
623 |
|
|
|
624 |
|
|
file->last_size = stats.st_size; |
625 |
|
|
return file->fp; |
626 |
|
|
} |
627 |
|
|
|
628 |
|
|
void |
629 |
|
|
reopen (void) |
630 |
pcg |
1.1 |
{ |
631 |
pcg |
1.11 |
struct logfile_entry *e; |
632 |
|
|
|
633 |
|
|
for (e = loglist; e; e = e->next) |
634 |
|
|
{ |
635 |
|
|
if (!e->inode) |
636 |
|
|
continue; /* skip stdin */ |
637 |
pcg |
1.1 |
|
638 |
pcg |
1.11 |
if (e->fp) |
639 |
|
|
fclose (e->fp); |
640 |
|
|
/* if fp is NULL we will try again later */ |
641 |
|
|
openlog (e); |
642 |
|
|
} |
643 |
|
|
|
644 |
|
|
do_reopen = 0; |
645 |
|
|
} |
646 |
pcg |
1.1 |
|
647 |
pcg |
1.11 |
void |
648 |
|
|
check_open_files (void) |
649 |
|
|
{ |
650 |
|
|
struct logfile_entry *e; |
651 |
|
|
struct stat stats; |
652 |
pcg |
1.1 |
|
653 |
pcg |
1.11 |
for (e = loglist; e; e = e->next) |
654 |
|
|
{ |
655 |
|
|
if (!e->inode) |
656 |
|
|
continue; /* skip stdin */ |
657 |
pcg |
1.1 |
|
658 |
pcg |
1.11 |
if (stat (e->fname, &stats) < 0) |
659 |
|
|
{ /* file missing? */ |
660 |
|
|
sleep (1); |
661 |
|
|
if (e->fp) |
662 |
|
|
fclose (e->fp); |
663 |
|
|
if (openlog (e) == NULL) |
664 |
chris_moore |
1.23 |
continue; |
665 |
pcg |
1.11 |
} |
666 |
|
|
|
667 |
chris_moore |
1.32 |
/* HACK-3: stats can be uninitialised here (if the file didn't |
668 |
|
|
* exist when stat() was called, but was recreated during the |
669 |
|
|
* sleep(1)) */ |
670 |
pcg |
1.11 |
if (stats.st_ino != e->inode) |
671 |
|
|
{ /* file renamed? */ |
672 |
|
|
if (e->fp) |
673 |
|
|
fclose (e->fp); |
674 |
|
|
if (openlog (e) == NULL) |
675 |
chris_moore |
1.23 |
continue; |
676 |
pcg |
1.11 |
} |
677 |
|
|
|
678 |
|
|
if (stats.st_size < e->last_size) |
679 |
|
|
{ /* file truncated? */ |
680 |
|
|
fseek (e->fp, 0, SEEK_SET); |
681 |
|
|
e->last_size = stats.st_size; |
682 |
|
|
} |
683 |
pcg |
1.1 |
} |
684 |
|
|
} |
685 |
|
|
|
686 |
pcg |
1.14 |
/* |
687 |
|
|
* insert a single physical line (that must be short enough to fit) |
688 |
|
|
* at position "idx" by pushing up lines above it. the caller |
689 |
|
|
* MUST then fill in lines[idx] with valid data. |
690 |
|
|
*/ |
691 |
pcg |
1.12 |
static void |
692 |
|
|
insert_line (int idx) |
693 |
|
|
{ |
694 |
|
|
int cur_line; |
695 |
|
|
struct logfile_entry *current; |
696 |
|
|
|
697 |
|
|
free (lines[0].line); |
698 |
|
|
|
699 |
|
|
for (cur_line = 0; cur_line < idx; cur_line++) |
700 |
|
|
lines[cur_line] = lines[cur_line + 1]; |
701 |
|
|
|
702 |
|
|
for (current = loglist; current; current = current->next) |
703 |
pcg |
1.16 |
if (current->index <= idx) |
704 |
pcg |
1.12 |
current->index--; |
705 |
pcg |
1.11 |
} |
706 |
|
|
|
707 |
pcg |
1.14 |
/* |
708 |
|
|
* remove a single physical line at position "idx" by moving the lines above it |
709 |
|
|
* down and inserting a "~" line at the top. |
710 |
|
|
*/ |
711 |
pcg |
1.12 |
static void |
712 |
|
|
delete_line (int idx) |
713 |
|
|
{ |
714 |
|
|
int cur_line; |
715 |
|
|
struct logfile_entry *current; |
716 |
|
|
|
717 |
|
|
for (cur_line = idx; cur_line > 0; cur_line--) |
718 |
|
|
lines[cur_line] = lines[cur_line - 1]; |
719 |
|
|
|
720 |
chris_moore |
1.28 |
lines[0].line = xstrdup ("~"); |
721 |
pcg |
1.12 |
|
722 |
|
|
for (current = loglist; current; current = current->next) |
723 |
pcg |
1.16 |
if (current->index >= 0 && current->index <= idx) |
724 |
pcg |
1.12 |
current->index++; |
725 |
|
|
} |
726 |
|
|
|
727 |
pcg |
1.14 |
/* |
728 |
chris_moore |
1.24 |
* takes a logical log file line and splits it into multiple physical |
729 |
pcg |
1.14 |
* screen lines by splitting it whenever a part becomes too long. |
730 |
|
|
* lal lines will be inserted at position "idx". |
731 |
|
|
*/ |
732 |
pcg |
1.12 |
static void |
733 |
|
|
split_line (int idx, const char *str, unsigned long color) |
734 |
|
|
{ |
735 |
|
|
int l = strlen (str); |
736 |
chris_moore |
1.33 |
int last_wrapped = 0; |
737 |
pcg |
1.12 |
const char *p = str; |
738 |
chris_moore |
1.33 |
static int continuation_width = -1; |
739 |
|
|
static int continuation_length; |
740 |
|
|
|
741 |
|
|
/* only calculate the continuation's width once */ |
742 |
|
|
if (continuation_width == -1) |
743 |
|
|
{ |
744 |
|
|
continuation_length = strlen(continuation); |
745 |
|
|
continuation_width = XmbTextEscapement (fontset, continuation, continuation_length); |
746 |
|
|
printf("continuation width is %d and length is %d\n", continuation_width, continuation_length); |
747 |
|
|
} |
748 |
pcg |
1.12 |
|
749 |
|
|
do |
750 |
|
|
{ |
751 |
|
|
const char *beg = p; |
752 |
chris_moore |
1.33 |
int w = last_wrapped ? continuation_width : 0; |
753 |
|
|
int wrapped = 0; |
754 |
chris_moore |
1.24 |
const char *break_p = NULL; |
755 |
pcg |
1.12 |
|
756 |
|
|
while (*p) |
757 |
|
|
{ |
758 |
chris_moore |
1.24 |
/* find the length in bytes of the next multibyte character */ |
759 |
pcg |
1.12 |
int len = mblen (p, l); |
760 |
|
|
if (len <= 0) |
761 |
chris_moore |
1.24 |
len = 1; /* ignore (don't skip) illegal character sequences */ |
762 |
pcg |
1.12 |
|
763 |
chris_moore |
1.24 |
/* find the width in pixels of the next character */ |
764 |
pcg |
1.12 |
int cw = XmbTextEscapement (fontset, p, len); |
765 |
chris_moore |
1.27 |
if (cw + w > width - effect_x_space) |
766 |
chris_moore |
1.24 |
{ |
767 |
|
|
wrapped = 1; |
768 |
|
|
break; |
769 |
|
|
} |
770 |
|
|
|
771 |
|
|
if (opt_wordwrap && len == 1 && p[0] == ' ') |
772 |
|
|
break_p = p; |
773 |
pcg |
1.12 |
|
774 |
|
|
w += cw; |
775 |
|
|
p += len; |
776 |
|
|
l -= len; |
777 |
|
|
} |
778 |
|
|
|
779 |
chris_moore |
1.24 |
/* if we're wrapping at spaces, and the line is long enough to |
780 |
|
|
* wrap, and we've seen a space already, and the space wasn't |
781 |
|
|
* the first character on the line, then wrap at the space */ |
782 |
|
|
if (opt_wordwrap && wrapped && break_p && break_p != beg) |
783 |
|
|
{ |
784 |
|
|
l += p - break_p; |
785 |
|
|
p = break_p; |
786 |
|
|
} |
787 |
|
|
|
788 |
pcg |
1.12 |
{ |
789 |
chris_moore |
1.32 |
/* HACK-4 - consider inserting the 'continuation string' |
790 |
|
|
* before the rest of the wrapped line */ |
791 |
chris_moore |
1.33 |
int len = p - beg + (last_wrapped ? continuation_length : 0); |
792 |
|
|
char *s = xmalloc (len + 1); |
793 |
|
|
if (last_wrapped) |
794 |
|
|
{ |
795 |
|
|
memcpy (s, continuation, continuation_length); |
796 |
|
|
memcpy (s + continuation_length, beg, p - beg); |
797 |
|
|
} |
798 |
|
|
else |
799 |
|
|
memcpy (s, beg, len); |
800 |
|
|
|
801 |
|
|
s[len] = 0; |
802 |
pcg |
1.12 |
insert_line (idx); |
803 |
|
|
lines[idx].line = s; |
804 |
chris_moore |
1.33 |
lines[idx].len = len; |
805 |
pcg |
1.12 |
lines[idx].color = color; |
806 |
|
|
} |
807 |
chris_moore |
1.24 |
|
808 |
|
|
/* if we wrapped at a space, don't display the space */ |
809 |
|
|
if (opt_wordwrap && wrapped && break_p && break_p != beg) |
810 |
|
|
{ |
811 |
|
|
l--; |
812 |
|
|
p++; |
813 |
|
|
} |
814 |
chris_moore |
1.33 |
|
815 |
|
|
last_wrapped = wrapped; |
816 |
pcg |
1.12 |
} |
817 |
|
|
while (l); |
818 |
|
|
} |
819 |
|
|
|
820 |
pcg |
1.14 |
/* |
821 |
|
|
* append something to an existing physical line. this is done |
822 |
|
|
* by deleting the file on-screen, concatenating the new data to it |
823 |
|
|
* and splitting it again. |
824 |
|
|
*/ |
825 |
pcg |
1.12 |
static void |
826 |
|
|
append_line (int idx, const char *str) |
827 |
|
|
{ |
828 |
|
|
unsigned long color = lines[idx].color; |
829 |
|
|
char *old = lines[idx].line; |
830 |
|
|
char *new = concat_line (old, str); |
831 |
|
|
|
832 |
|
|
free (old); |
833 |
|
|
|
834 |
|
|
delete_line (idx); |
835 |
|
|
split_line (idx, new, color); |
836 |
|
|
} |
837 |
|
|
|
838 |
|
|
static void |
839 |
pcg |
1.11 |
main_loop (void) |
840 |
|
|
{ |
841 |
pcg |
1.12 |
lines = xmalloc (sizeof (struct linematrix) * listlen); |
842 |
chris_moore |
1.28 |
display = xmalloc (sizeof (struct displaymatrix) * listlen); |
843 |
pcg |
1.20 |
int lin; |
844 |
pcg |
1.11 |
time_t lastreload; |
845 |
|
|
Region region = XCreateRegion (); |
846 |
|
|
XEvent xev; |
847 |
|
|
struct logfile_entry *lastprinted = NULL; |
848 |
|
|
struct logfile_entry *current; |
849 |
pcg |
1.18 |
int need_update = 1; |
850 |
pcg |
1.11 |
|
851 |
|
|
lastreload = time (NULL); |
852 |
|
|
|
853 |
|
|
/* Initialize linematrix */ |
854 |
|
|
for (lin = 0; lin < listlen; lin++) |
855 |
|
|
{ |
856 |
chris_moore |
1.28 |
lines[lin].line = xstrdup ("~"); |
857 |
pcg |
1.12 |
lines[lin].len = 1; |
858 |
chris_moore |
1.28 |
display[lin].line = xstrdup(""); |
859 |
|
|
display[lin].len = 0; |
860 |
|
|
display[lin].buffer_size = 1; |
861 |
pcg |
1.11 |
lines[lin].color = GetColor (def_color); |
862 |
|
|
} |
863 |
|
|
|
864 |
|
|
for (;;) |
865 |
|
|
{ |
866 |
|
|
/* read logs */ |
867 |
|
|
for (current = loglist; current; current = current->next) |
868 |
|
|
{ |
869 |
|
|
if (!current->fp) |
870 |
|
|
continue; /* skip missing files */ |
871 |
|
|
|
872 |
|
|
clearerr (current->fp); |
873 |
|
|
|
874 |
pcg |
1.12 |
while (lineinput (current)) |
875 |
pcg |
1.11 |
{ |
876 |
pcg |
1.12 |
need_update = 1; |
877 |
pcg |
1.11 |
/* if we're trying to update old partial lines in |
878 |
|
|
* place, and the last time this file was updated the |
879 |
|
|
* output was partial, and that partial line is not |
880 |
|
|
* too close to the top of the screen, then update |
881 |
|
|
* that partial line */ |
882 |
pcg |
1.16 |
if (opt_update && current->lastpartial && current->index >= 0) |
883 |
pcg |
1.11 |
{ |
884 |
pcg |
1.16 |
int idx = current->index; |
885 |
|
|
append_line (idx, current->buf); |
886 |
|
|
current->index = idx; |
887 |
pcg |
1.13 |
free (current->buf), current->buf = 0; |
888 |
pcg |
1.12 |
continue; |
889 |
pcg |
1.11 |
} |
890 |
|
|
|
891 |
|
|
/* print filename if any, and if last line was from |
892 |
|
|
* different file */ |
893 |
pcg |
1.13 |
if (!opt_nofilename && lastprinted != current && current->desc[0]) |
894 |
pcg |
1.11 |
{ |
895 |
chris_moore |
1.32 |
char buf[1024]; /* HACK-5 */ |
896 |
pcg |
1.12 |
snprintf (buf, sizeof (buf), "[%s]", current->desc); |
897 |
|
|
split_line (listlen - 1, buf, current->color); |
898 |
pcg |
1.11 |
} |
899 |
|
|
|
900 |
chris_moore |
1.31 |
/* if we're dealing with partial lines, and the last |
901 |
|
|
* time we showed the line it wasn't finished ... */ |
902 |
|
|
if (!opt_whole && current->lastpartial) |
903 |
chris_moore |
1.23 |
{ |
904 |
chris_moore |
1.31 |
/* if this is the same file we showed last then |
905 |
|
|
append to the last line shown */ |
906 |
|
|
if (lastprinted == current) |
907 |
|
|
append_line (listlen - 1, current->buf); |
908 |
|
|
else |
909 |
|
|
{ |
910 |
|
|
/* but if a different file has been shown in the |
911 |
|
|
* mean time, make a new line, starting with the |
912 |
|
|
* continuation string */ |
913 |
|
|
split_line (listlen - 1, continuation, current->color); |
914 |
|
|
append_line (listlen - 1, current->buf); |
915 |
|
|
} |
916 |
chris_moore |
1.23 |
} |
917 |
pcg |
1.11 |
else |
918 |
chris_moore |
1.31 |
/* otherwise just make a plain and simple new line */ |
919 |
chris_moore |
1.23 |
split_line (listlen - 1, current->buf, current->color); |
920 |
pcg |
1.11 |
|
921 |
chris_moore |
1.23 |
free (current->buf), current->buf = 0; |
922 |
pcg |
1.11 |
current->index = listlen - 1; |
923 |
|
|
lastprinted = current; |
924 |
|
|
} |
925 |
|
|
} |
926 |
|
|
|
927 |
|
|
if (need_update) |
928 |
pcg |
1.18 |
{ |
929 |
chris_moore |
1.28 |
redraw (0); |
930 |
pcg |
1.18 |
need_update = 0; |
931 |
|
|
} |
932 |
pcg |
1.11 |
else |
933 |
|
|
{ |
934 |
|
|
XFlush (disp); |
935 |
|
|
|
936 |
|
|
if (!XPending (disp)) |
937 |
|
|
{ |
938 |
|
|
fd_set fdr; |
939 |
|
|
struct timeval to = interval; |
940 |
|
|
|
941 |
|
|
FD_ZERO (&fdr); |
942 |
|
|
FD_SET (ConnectionNumber (disp), &fdr); |
943 |
|
|
select (ConnectionNumber (disp) + 1, &fdr, 0, 0, &to); |
944 |
|
|
} |
945 |
|
|
} |
946 |
|
|
|
947 |
|
|
check_open_files (); |
948 |
|
|
|
949 |
|
|
if (do_reopen) |
950 |
|
|
reopen (); |
951 |
|
|
|
952 |
|
|
/* we ignore possible errors due to window resizing &c */ |
953 |
|
|
while (XPending (disp)) |
954 |
|
|
{ |
955 |
|
|
XNextEvent (disp, &xev); |
956 |
|
|
|
957 |
|
|
switch (xev.type) |
958 |
|
|
{ |
959 |
|
|
case Expose: |
960 |
|
|
{ |
961 |
|
|
XRectangle r; |
962 |
|
|
|
963 |
|
|
r.x = xev.xexpose.x; |
964 |
|
|
r.y = xev.xexpose.y; |
965 |
|
|
r.width = xev.xexpose.width; |
966 |
|
|
r.height = xev.xexpose.height; |
967 |
pcg |
1.20 |
|
968 |
pcg |
1.11 |
XUnionRectWithRegion (&r, region, region); |
969 |
|
|
} |
970 |
|
|
break; |
971 |
|
|
default: |
972 |
|
|
#ifdef DEBUGMODE |
973 |
|
|
fprintf (stderr, "PANIC! Unknown event %d\n", xev.type); |
974 |
|
|
#endif |
975 |
|
|
break; |
976 |
|
|
} |
977 |
|
|
} |
978 |
|
|
|
979 |
|
|
/* reload if requested */ |
980 |
|
|
if (reload && lastreload + reload < time (NULL)) |
981 |
|
|
{ |
982 |
|
|
if (command && command[0]) |
983 |
|
|
system (command); |
984 |
|
|
|
985 |
|
|
reopen (); |
986 |
|
|
lastreload = time (NULL); |
987 |
|
|
} |
988 |
|
|
|
989 |
|
|
if (!XEmptyRegion (region)) |
990 |
|
|
{ |
991 |
pcg |
1.20 |
XRectangle r; |
992 |
|
|
|
993 |
pcg |
1.11 |
XSetRegion (disp, WinGC, region); |
994 |
pcg |
1.20 |
XClipBox (region, &r); |
995 |
|
|
|
996 |
chris_moore |
1.28 |
refresh (r.y, r.y + r.height, 0, 1); |
997 |
pcg |
1.11 |
|
998 |
|
|
XDestroyRegion (region); |
999 |
|
|
region = XCreateRegion (); |
1000 |
|
|
} |
1001 |
|
|
} |
1002 |
|
|
} |
1003 |
pcg |
1.1 |
|
1004 |
pcg |
1.11 |
|
1005 |
|
|
int |
1006 |
|
|
main (int argc, char *argv[]) |
1007 |
pcg |
1.1 |
{ |
1008 |
pcg |
1.11 |
int i; |
1009 |
|
|
int opt_daemonize = 0; |
1010 |
|
|
int opt_partial = 0, file_count = 0; |
1011 |
pcg |
1.1 |
#if HAS_REGEX |
1012 |
pcg |
1.11 |
char *transform = NULL; |
1013 |
pcg |
1.1 |
#endif |
1014 |
|
|
|
1015 |
pcg |
1.11 |
setlocale (LC_CTYPE, ""); /* try to initialize the locale. */ |
1016 |
|
|
|
1017 |
|
|
/* window needs to be initialized before colorlookups can be done */ |
1018 |
|
|
/* just a dummy to get the color lookups right */ |
1019 |
|
|
geom_mask = NoValue; |
1020 |
|
|
InitWindow (); |
1021 |
|
|
|
1022 |
|
|
for (i = 1; i < argc; i++) |
1023 |
|
|
{ |
1024 |
|
|
const char *arg = argv[i]; |
1025 |
pcg |
1.7 |
|
1026 |
pcg |
1.11 |
if (arg[0] == '-' && arg[1] != '\0' && arg[1] != ',') |
1027 |
|
|
{ |
1028 |
|
|
if (arg[1] == '-') |
1029 |
|
|
arg++; |
1030 |
|
|
|
1031 |
|
|
if (!strcmp (arg, "-?") || |
1032 |
|
|
!strcmp (arg, "-help") || !strcmp (arg, "-h")) |
1033 |
|
|
display_help (argv[0]); |
1034 |
|
|
else if (!strcmp (arg, "-V")) |
1035 |
|
|
display_version (); |
1036 |
|
|
else if (!strcmp (arg, "-g") || !strcmp (arg, "-geometry")) |
1037 |
|
|
geom_mask = |
1038 |
|
|
XParseGeometry (argv[++i], &win_x, &win_y, &width, &height); |
1039 |
|
|
else if (!strcmp (arg, "-display")) |
1040 |
|
|
dispname = argv[++i]; |
1041 |
|
|
else if (!strcmp (arg, "-cont")) |
1042 |
|
|
continuation = argv[++i]; |
1043 |
|
|
else if (!strcmp (arg, "-font") || !strcmp (arg, "-fn")) |
1044 |
|
|
fontname = argv[++i]; |
1045 |
pcg |
1.1 |
#if HAS_REGEX |
1046 |
pcg |
1.11 |
else if (!strcmp (arg, "-t")) |
1047 |
chris_moore |
1.26 |
{ |
1048 |
|
|
transform = argv[++i]; |
1049 |
|
|
transform_to = argv[++i]; |
1050 |
|
|
printf("transform: '%s' to '%s'\n", transform, transform_to); |
1051 |
|
|
} |
1052 |
pcg |
1.1 |
#endif |
1053 |
pcg |
1.11 |
else if (!strcmp (arg, "-fork") || !strcmp (arg, "-f")) |
1054 |
|
|
opt_daemonize = 1; |
1055 |
|
|
else if (!strcmp (arg, "-reload")) |
1056 |
|
|
{ |
1057 |
|
|
reload = atoi (argv[++i]); |
1058 |
|
|
command = argv[++i]; |
1059 |
|
|
} |
1060 |
|
|
else if (!strcmp (arg, "-shade")) |
1061 |
|
|
opt_shade = 1; |
1062 |
pcg |
1.21 |
else if (!strcmp (arg, "-outline")) |
1063 |
|
|
opt_outline = 1; |
1064 |
pcg |
1.22 |
else if (!strcmp (arg, "-noflicker")) |
1065 |
|
|
opt_noflicker = 1; |
1066 |
pcg |
1.11 |
else if (!strcmp (arg, "-frame")) |
1067 |
|
|
opt_frame = 1; |
1068 |
|
|
else if (!strcmp (arg, "-no-filename")) |
1069 |
|
|
opt_nofilename = 1; |
1070 |
|
|
else if (!strcmp (arg, "-reverse")) |
1071 |
|
|
opt_reverse = 1; |
1072 |
|
|
else if (!strcmp (arg, "-whole")) |
1073 |
|
|
opt_whole = 1; |
1074 |
|
|
else if (!strcmp (arg, "-partial")) |
1075 |
|
|
opt_partial = 1; |
1076 |
|
|
else if (!strcmp (arg, "-update")) |
1077 |
|
|
opt_update = opt_partial = 1; |
1078 |
chris_moore |
1.24 |
else if (!strcmp (arg, "-wordwrap")) |
1079 |
|
|
opt_wordwrap = 1; |
1080 |
pcg |
1.11 |
else if (!strcmp (arg, "-color")) |
1081 |
|
|
def_color = argv[++i]; |
1082 |
|
|
else if (!strcmp (arg, "-noinitial")) |
1083 |
|
|
opt_noinitial = 1; |
1084 |
|
|
else if (!strcmp (arg, "-id")) |
1085 |
|
|
root = atoi (argv[++i]); |
1086 |
|
|
else if (!strcmp (arg, "-interval") || !strcmp (arg, "-i")) |
1087 |
|
|
{ |
1088 |
|
|
double iv = atof (argv[++i]); |
1089 |
|
|
|
1090 |
|
|
interval.tv_sec = (int) iv; |
1091 |
|
|
interval.tv_usec = (iv - interval.tv_sec) * 1e6; |
1092 |
|
|
} |
1093 |
|
|
else |
1094 |
|
|
{ |
1095 |
|
|
fprintf (stderr, "Unknown option '%s'.\n" |
1096 |
|
|
"Try --help for more information.\n", arg); |
1097 |
|
|
exit (1); |
1098 |
|
|
} |
1099 |
|
|
} |
1100 |
|
|
else |
1101 |
|
|
{ /* it must be a filename */ |
1102 |
|
|
struct logfile_entry *e; |
1103 |
|
|
const char *fname, *desc, *fcolor = def_color; |
1104 |
|
|
char *p; |
1105 |
|
|
|
1106 |
|
|
file_count++; |
1107 |
|
|
|
1108 |
|
|
/* this is not foolproof yet (',' in filenames are not allowed) */ |
1109 |
|
|
fname = desc = arg; |
1110 |
|
|
if ((p = strchr (arg, ','))) |
1111 |
|
|
{ |
1112 |
|
|
*p = '\0'; |
1113 |
|
|
fcolor = p + 1; |
1114 |
|
|
|
1115 |
|
|
if ((p = strchr (fcolor, ','))) |
1116 |
|
|
{ |
1117 |
|
|
*p = '\0'; |
1118 |
|
|
desc = p + 1; |
1119 |
|
|
} |
1120 |
|
|
} |
1121 |
|
|
|
1122 |
|
|
e = xmalloc (sizeof (struct logfile_entry)); |
1123 |
pcg |
1.12 |
e->partial = 0; |
1124 |
|
|
e->buf = 0; |
1125 |
pcg |
1.16 |
e->index = -1; |
1126 |
pcg |
1.12 |
|
1127 |
pcg |
1.11 |
if (arg[0] == '-' && arg[1] == '\0') |
1128 |
|
|
{ |
1129 |
|
|
if ((e->fp = fdopen (0, "r")) == NULL) |
1130 |
|
|
perror ("fdopen"), exit (1); |
1131 |
|
|
if (fcntl (0, F_SETFL, O_NONBLOCK) < 0) |
1132 |
|
|
perror ("fcntl"), exit (1); |
1133 |
|
|
e->fname = NULL; |
1134 |
|
|
e->inode = 0; |
1135 |
|
|
e->desc = xstrdup ("stdin"); |
1136 |
|
|
} |
1137 |
|
|
else |
1138 |
|
|
{ |
1139 |
|
|
int l; |
1140 |
|
|
|
1141 |
|
|
e->fname = xstrdup (fname); |
1142 |
|
|
if (openlog (e) == NULL) |
1143 |
|
|
perror (fname), exit (1); |
1144 |
|
|
|
1145 |
|
|
l = strlen (desc); |
1146 |
chris_moore |
1.32 |
/* HACK-6: width is in pixels now */ |
1147 |
pcg |
1.11 |
if (l > width - 2) /* must account for [ ] */ |
1148 |
|
|
l = width - 2; |
1149 |
|
|
e->desc = xmalloc (l + 1); |
1150 |
|
|
memcpy (e->desc, desc, l); |
1151 |
|
|
*(e->desc + l) = '\0'; |
1152 |
|
|
} |
1153 |
|
|
|
1154 |
|
|
e->color = GetColor (fcolor); |
1155 |
|
|
e->partial = 0; |
1156 |
|
|
e->next = NULL; |
1157 |
|
|
|
1158 |
|
|
if (!loglist) |
1159 |
|
|
loglist = e; |
1160 |
|
|
if (loglist_tail) |
1161 |
|
|
loglist_tail->next = e; |
1162 |
|
|
loglist_tail = e; |
1163 |
|
|
} |
1164 |
|
|
} |
1165 |
|
|
|
1166 |
|
|
if (!loglist) |
1167 |
|
|
{ |
1168 |
|
|
fprintf (stderr, "You did not specify any files to tail\n" |
1169 |
|
|
"use %s --help for help\n", argv[0]); |
1170 |
|
|
exit (1); |
1171 |
|
|
} |
1172 |
|
|
|
1173 |
|
|
if (opt_partial && opt_whole) |
1174 |
|
|
{ |
1175 |
|
|
fprintf (stderr, "Specify at most one of -partial and -whole\n"); |
1176 |
|
|
exit (1); |
1177 |
chris_moore |
1.9 |
} |
1178 |
|
|
|
1179 |
chris_moore |
1.32 |
/* HACK-7: do we want to allow both -shade and -outline? */ |
1180 |
chris_moore |
1.27 |
if (opt_shade && opt_outline) |
1181 |
|
|
{ |
1182 |
|
|
fprintf (stderr, "Specify at most one of -shade and -outline\n"); |
1183 |
|
|
exit (1); |
1184 |
|
|
} |
1185 |
|
|
|
1186 |
pcg |
1.11 |
if (opt_partial) |
1187 |
chris_moore |
1.9 |
/* if we specifically requested to see partial lines then don't insist on whole lines */ |
1188 |
pcg |
1.11 |
opt_whole = 0; |
1189 |
|
|
else if (file_count > 1) |
1190 |
chris_moore |
1.31 |
/* otherwise, if we're viewing multiple files, default to showing whole lines */ |
1191 |
pcg |
1.11 |
opt_whole = 1; |
1192 |
chris_moore |
1.9 |
|
1193 |
pcg |
1.1 |
#if HAS_REGEX |
1194 |
pcg |
1.11 |
if (transform) |
1195 |
|
|
{ |
1196 |
|
|
int i; |
1197 |
pcg |
1.1 |
|
1198 |
chris_moore |
1.26 |
printf("compiling regexp '%s'\n", transform); |
1199 |
|
|
transformre = xmalloc (sizeof (regex_t)); |
1200 |
|
|
i = regcomp (transformre, transform, REG_EXTENDED); |
1201 |
pcg |
1.11 |
if (i != 0) |
1202 |
|
|
{ |
1203 |
|
|
char buf[512]; |
1204 |
|
|
|
1205 |
chris_moore |
1.26 |
regerror (i, transformre, buf, sizeof (buf)); |
1206 |
pcg |
1.11 |
fprintf (stderr, "Cannot compile regular expression: %s\n", buf); |
1207 |
|
|
} |
1208 |
chris_moore |
1.26 |
else |
1209 |
|
|
{ |
1210 |
|
|
printf("compiled '%s' OK to %x\n", transform, (int)transformre); |
1211 |
|
|
} |
1212 |
pcg |
1.1 |
} |
1213 |
|
|
#endif |
1214 |
|
|
|
1215 |
pcg |
1.11 |
InitWindow (); |
1216 |
pcg |
1.1 |
|
1217 |
pcg |
1.11 |
install_signal (SIGINT, blank_window); |
1218 |
|
|
install_signal (SIGQUIT, blank_window); |
1219 |
|
|
install_signal (SIGTERM, blank_window); |
1220 |
|
|
install_signal (SIGHUP, force_reopen); |
1221 |
|
|
install_signal (SIGUSR1, list_files); |
1222 |
|
|
install_signal (SIGUSR2, force_refresh); |
1223 |
pcg |
1.1 |
|
1224 |
pcg |
1.11 |
if (opt_daemonize) |
1225 |
|
|
daemonize (); |
1226 |
pcg |
1.1 |
|
1227 |
pcg |
1.11 |
main_loop (); |
1228 |
pcg |
1.1 |
|
1229 |
pcg |
1.11 |
exit (1); /* to make gcc -Wall stop complaining */ |
1230 |
pcg |
1.1 |
} |
1231 |
|
|
|
1232 |
pcg |
1.11 |
void |
1233 |
|
|
install_signal (int sig, void (*handler) (int)) |
1234 |
pcg |
1.1 |
{ |
1235 |
pcg |
1.11 |
struct sigaction action; |
1236 |
|
|
|
1237 |
|
|
action.sa_handler = handler; |
1238 |
|
|
sigemptyset (&action.sa_mask); |
1239 |
|
|
action.sa_flags = SA_RESTART; |
1240 |
pcg |
1.1 |
|
1241 |
pcg |
1.11 |
if (sigaction (sig, &action, NULL) < 0) |
1242 |
|
|
fprintf (stderr, "sigaction(%d): %s\n", sig, strerror (errno)), exit (1); |
1243 |
pcg |
1.1 |
} |
1244 |
|
|
|
1245 |
pcg |
1.11 |
void * |
1246 |
|
|
xstrdup (const char *string) |
1247 |
pcg |
1.1 |
{ |
1248 |
pcg |
1.11 |
void *p; |
1249 |
pcg |
1.1 |
|
1250 |
pcg |
1.11 |
while ((p = strdup (string)) == NULL) |
1251 |
|
|
{ |
1252 |
|
|
fprintf (stderr, "Memory exausted."); |
1253 |
|
|
sleep (10); |
1254 |
pcg |
1.1 |
} |
1255 |
pcg |
1.11 |
|
1256 |
|
|
return p; |
1257 |
pcg |
1.1 |
} |
1258 |
|
|
|
1259 |
pcg |
1.11 |
void * |
1260 |
|
|
xmalloc (size_t size) |
1261 |
pcg |
1.1 |
{ |
1262 |
pcg |
1.11 |
void *p; |
1263 |
pcg |
1.1 |
|
1264 |
pcg |
1.11 |
while ((p = malloc (size)) == NULL) |
1265 |
|
|
{ |
1266 |
|
|
fprintf (stderr, "Memory exausted."); |
1267 |
|
|
sleep (10); |
1268 |
pcg |
1.1 |
} |
1269 |
pcg |
1.12 |
|
1270 |
pcg |
1.11 |
return p; |
1271 |
pcg |
1.1 |
} |
1272 |
|
|
|
1273 |
chris_moore |
1.28 |
void * |
1274 |
|
|
xrealloc (void *ptr, size_t size) |
1275 |
|
|
{ |
1276 |
|
|
void *p; |
1277 |
|
|
|
1278 |
|
|
while ((p = realloc (ptr, size)) == NULL) |
1279 |
|
|
{ |
1280 |
|
|
fprintf (stderr, "Memory exausted."); |
1281 |
|
|
sleep (10); |
1282 |
|
|
} |
1283 |
|
|
|
1284 |
|
|
return p; |
1285 |
|
|
} |
1286 |
|
|
|
1287 |
pcg |
1.11 |
void |
1288 |
|
|
display_help (char *myname) |
1289 |
|
|
{ |
1290 |
|
|
printf ("Usage: %s [options] file1[,color[,desc]] " |
1291 |
|
|
"[file2[,color[,desc]] ...]\n", myname); |
1292 |
|
|
printf (" -g | -geometry geometry -g WIDTHxHEIGHT+X+Y\n" |
1293 |
|
|
" -color color use color $color as default\n" |
1294 |
|
|
" -reload sec command reload after $sec and run command\n" |
1295 |
|
|
" -id id window id to use instead of the root window\n" |
1296 |
|
|
" -font FONTSPEC (-fn) font to use\n" |
1297 |
|
|
" -f | -fork fork into background\n" |
1298 |
|
|
" -reverse print new lines at the top\n" |
1299 |
|
|
" -whole wait for \\n before showing a line\n" |
1300 |
|
|
" -partial show lines even if they don't end with a \\n\n" |
1301 |
|
|
" -update allow updates to old partial lines\n" |
1302 |
|
|
" -cont string to prefix continued partial lines with\n" |
1303 |
chris_moore |
1.24 |
" -wordwrap wrap long lines at spaces to avoid breaking words\n" |
1304 |
pcg |
1.11 |
" defaults to \"[+]\"\n" |
1305 |
|
|
" -shade add shading to font\n" |
1306 |
|
|
" -noinitial don't display the last file lines on\n" |
1307 |
|
|
" startup\n" |
1308 |
|
|
" -i | -interval seconds interval between checks (fractional\n" |
1309 |
pcg |
1.21 |
" values o.k.). Default 2.4 seconds\n" |
1310 |
pcg |
1.11 |
" -V display version information and exit\n" |
1311 |
|
|
"\n"); |
1312 |
|
|
printf ("Example:\n%s -g 80x25+100+50 -font fixed /var/log/messages,green " |
1313 |
|
|
"/var/log/secure,red,'ALERT'\n", myname); |
1314 |
|
|
exit (0); |
1315 |
|
|
} |
1316 |
|
|
|
1317 |
|
|
void |
1318 |
|
|
display_version (void) |
1319 |
pcg |
1.1 |
{ |
1320 |
pcg |
1.11 |
printf ("root-tail version " VERSION "\n"); |
1321 |
|
|
exit (0); |
1322 |
pcg |
1.1 |
} |
1323 |
|
|
|
1324 |
pcg |
1.11 |
int |
1325 |
|
|
daemonize (void) |
1326 |
|
|
{ |
1327 |
chris_moore |
1.26 |
pid_t pid; |
1328 |
|
|
|
1329 |
|
|
switch (pid = fork ()) |
1330 |
pcg |
1.11 |
{ |
1331 |
pcg |
1.1 |
case -1: |
1332 |
pcg |
1.11 |
return -1; |
1333 |
pcg |
1.1 |
case 0: |
1334 |
pcg |
1.11 |
break; |
1335 |
pcg |
1.1 |
default: |
1336 |
pcg |
1.29 |
/*printf("%d\n", pid);*/ |
1337 |
chris_moore |
1.26 |
exit (0); |
1338 |
pcg |
1.1 |
} |
1339 |
|
|
|
1340 |
pcg |
1.11 |
if (setsid () == -1) |
1341 |
|
|
return -1; |
1342 |
pcg |
1.1 |
|
1343 |
pcg |
1.11 |
return 0; |
1344 |
pcg |
1.1 |
} |