1 | /* |
1 | /* |
2 | * Copyright 2001 by Marco d'Itri <md@linux.it> |
2 | * Copyright 2001 by Marco d'Itri <md@linux.it> |
3 | * |
3 | * Copyright 2000,2001,2002,2003,2004 |
4 | * Original version by Mike Baker, then maintained by pcg@goof.com. |
4 | * Marc Lehmann <pcg@goof.com>, |
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5 | * and many others, see README |
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6 | * |
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7 | * Original version by Mike Baker. |
5 | * |
8 | * |
6 | * This program is free software; you can redistribute it and/or modify |
9 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
10 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
11 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
12 | * (at your option) any later version. |
… | |
… | |
31 | #include <sys/stat.h> |
34 | #include <sys/stat.h> |
32 | #include <sys/types.h> |
35 | #include <sys/types.h> |
33 | #include <locale.h> |
36 | #include <locale.h> |
34 | #include <ctype.h> |
37 | #include <ctype.h> |
35 | #include <stdarg.h> |
38 | #include <stdarg.h> |
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39 | #include <X11/Xlib.h> |
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40 | #include <X11/Xatom.h> |
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41 | #include <X11/Xutil.h> |
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42 | |
36 | #if HAS_REGEX |
43 | #if HAS_REGEX |
37 | #include <regex.h> |
44 | #include <regex.h> |
38 | #endif |
45 | #endif |
39 | #include <X11/Xlib.h> |
46 | |
40 | #include <X11/Xatom.h> |
47 | #define SHADE_X 2 |
41 | #include <X11/Xutil.h> |
48 | #define SHADE_Y 2 |
42 | |
49 | |
43 | /* data structures */ |
50 | /* data structures */ |
44 | struct logfile_entry |
51 | struct logfile_entry |
45 | { |
52 | { |
46 | struct logfile_entry *next; |
53 | struct logfile_entry *next; |
… | |
… | |
53 | off_t last_size; /* file size at the last check */ |
60 | off_t last_size; /* file size at the last check */ |
54 | unsigned long color; /* color to be used for printing */ |
61 | unsigned long color; /* color to be used for printing */ |
55 | int partial; /* true if the last line isn't complete */ |
62 | int partial; /* true if the last line isn't complete */ |
56 | int lastpartial; /* true if the previous output wasn't complete */ |
63 | int lastpartial; /* true if the previous output wasn't complete */ |
57 | int index; /* index into linematrix of a partial line */ |
64 | int index; /* index into linematrix of a partial line */ |
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65 | int modified; /* true if line is modified & needs displaying */ |
58 | }; |
66 | }; |
59 | |
67 | |
60 | struct linematrix |
68 | struct linematrix |
61 | { |
69 | { |
62 | char *line; |
70 | char *line; |
63 | int len; |
71 | int len; |
64 | unsigned long color; |
72 | unsigned long color; |
65 | }; |
73 | }; |
66 | |
74 | |
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75 | struct displaymatrix |
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76 | { |
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77 | char *line; |
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78 | int len; |
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79 | int buffer_size; |
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80 | unsigned long color; |
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81 | }; |
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82 | |
67 | /* global variables */ |
83 | /* global variables */ |
68 | struct linematrix *lines; |
84 | struct linematrix *lines; |
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85 | struct displaymatrix *display; |
69 | int width = STD_WIDTH, height = STD_HEIGHT, listlen; |
86 | int width = STD_WIDTH, height = STD_HEIGHT, listlen; |
70 | int win_x = LOC_X, win_y = LOC_Y; |
87 | int win_x = LOC_X, win_y = LOC_Y; |
71 | int font_ascent, font_height; |
88 | int font_ascent, font_height; |
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89 | int effect_x_space, effect_y_space; /* how much space does shading / outlining take up */ |
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90 | int effect_x_offset, effect_y_offset; /* and how does it offset the usable space */ |
72 | int do_reopen; |
91 | int do_reopen; |
73 | struct timeval interval = { 2, 400000 }; |
92 | struct timeval interval = { 2, 400000 }; |
74 | XFontSet fontset; |
93 | XFontSet fontset; |
75 | |
94 | |
76 | /* command line options */ |
95 | /* command line options */ |
77 | int opt_noinitial, opt_shade, opt_frame, opt_reverse, opt_nofilename, |
96 | int opt_noinitial, opt_shade, opt_frame, opt_reverse, opt_nofilename, |
78 | opt_outline, opt_noflicker, opt_whole, opt_update, geom_mask, reload = 0; |
97 | opt_outline, opt_noflicker, opt_whole, opt_update, opt_wordwrap, |
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98 | geom_mask, reload = 0; |
79 | const char *command = NULL, |
99 | const char *command = NULL, |
80 | *fontname = USE_FONT, *dispname = NULL, *def_color = DEF_COLOR, |
100 | *fontname = USE_FONT, *dispname = NULL, *def_color = DEF_COLOR, |
81 | *continuation = "[+]"; |
101 | *continuation = "[+]"; |
82 | |
102 | |
83 | struct logfile_entry *loglist = NULL, *loglist_tail = NULL; |
103 | struct logfile_entry *loglist = NULL, *loglist_tail = NULL; |
… | |
… | |
92 | regex_t from; |
112 | regex_t from; |
93 | const char *to; |
113 | const char *to; |
94 | struct re_list *next; |
114 | struct re_list *next; |
95 | }; |
115 | }; |
96 | struct re_list *re_head, *re_tail; |
116 | struct re_list *re_head, *re_tail; |
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117 | char *transform_to = NULL; |
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118 | regex_t *transformre; |
97 | #endif |
119 | #endif |
98 | |
120 | |
99 | |
121 | |
100 | /* prototypes */ |
122 | /* prototypes */ |
101 | void list_files (int); |
123 | void list_files (int); |
… | |
… | |
103 | void force_refresh (int); |
125 | void force_refresh (int); |
104 | void blank_window (int); |
126 | void blank_window (int); |
105 | |
127 | |
106 | void InitWindow (void); |
128 | void InitWindow (void); |
107 | unsigned long GetColor (const char *); |
129 | unsigned long GetColor (const char *); |
108 | void redraw (void); |
130 | void redraw (int); |
109 | void refresh (int, int, int); |
131 | void refresh (int, int, int, int); |
110 | |
132 | |
111 | void transform_line (char *s); |
133 | void transform_line (char *s); |
112 | int lineinput (struct logfile_entry *); |
134 | int lineinput (struct logfile_entry *); |
113 | void reopen (void); |
135 | void reopen (void); |
114 | void check_open_files (void); |
136 | void check_open_files (void); |
… | |
… | |
118 | void display_version (void); |
140 | void display_version (void); |
119 | void display_help (char *); |
141 | void display_help (char *); |
120 | void install_signal (int, void (*)(int)); |
142 | void install_signal (int, void (*)(int)); |
121 | void *xstrdup (const char *); |
143 | void *xstrdup (const char *); |
122 | void *xmalloc (size_t); |
144 | void *xmalloc (size_t); |
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145 | void *xrealloc (void *, size_t); |
123 | int daemonize (void); |
146 | int daemonize (void); |
124 | |
147 | |
125 | /* signal handlers */ |
148 | /* signal handlers */ |
126 | void |
149 | void |
127 | list_files (int dummy) |
150 | list_files (int dummy) |
… | |
… | |
140 | } |
163 | } |
141 | |
164 | |
142 | void |
165 | void |
143 | force_refresh (int dummy) |
166 | force_refresh (int dummy) |
144 | { |
167 | { |
145 | redraw (); |
168 | redraw (1); |
146 | } |
169 | } |
147 | |
170 | |
148 | void |
171 | void |
149 | blank_window (int dummy) |
172 | blank_window (int dummy) |
150 | { |
173 | { |
… | |
… | |
293 | if (geom_mask & XNegative) |
316 | if (geom_mask & XNegative) |
294 | win_x = win_x + ScreenWidth - width; |
317 | win_x = win_x + ScreenWidth - width; |
295 | if (geom_mask & YNegative) |
318 | if (geom_mask & YNegative) |
296 | win_y = win_y + ScreenHeight - height; |
319 | win_y = win_y + ScreenHeight - height; |
297 | |
320 | |
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321 | if (opt_outline) |
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322 | { |
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323 | /* adding outline increases the total width and height by 2 |
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324 | pixels each, and offsets the text one pixel right and one |
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325 | pixel down */ |
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326 | effect_x_space = effect_y_space = 2; |
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327 | effect_x_offset = effect_y_offset = 1; |
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328 | } |
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329 | else if (opt_shade) |
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330 | { |
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331 | /* adding a shadow increases the space used */ |
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332 | effect_x_space = abs(SHADE_X); |
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333 | effect_y_space = abs(SHADE_Y); |
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334 | /* if the shadow is to the right and below then we don't need |
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335 | * to move the text to make space for it, but shadows to the left |
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336 | * and above need accomodating */ |
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337 | effect_x_offset = SHADE_X > 0 ? 0 : -SHADE_X; |
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338 | effect_y_offset = SHADE_Y > 0 ? 0 : -SHADE_Y; |
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339 | } |
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340 | else |
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341 | { |
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342 | effect_x_space = effect_y_space = 0; |
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343 | effect_x_offset = effect_y_offset = 0; |
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344 | } |
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345 | |
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346 | /* if we are using -shade or -outline, there will be less usable |
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347 | * space for output */ |
298 | listlen = height / font_height; |
348 | listlen = (height - effect_y_space) / font_height; |
299 | |
349 | |
300 | if (!listlen) |
350 | if (!listlen) |
301 | { |
351 | { |
302 | fprintf (stderr, "height too small for a single line, setting to %d\n", |
352 | fprintf (stderr, "height too small for a single line, setting to %d\n", |
303 | font_height); |
353 | font_height); |
304 | listlen = 1; |
354 | listlen = 1; |
305 | } |
355 | } |
306 | |
356 | |
307 | height = listlen * font_height; |
357 | /* leave the height how the user requested it. it might not all be |
308 | |
358 | * used, but this will allow the geometry to be tuned more accurately |
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359 | * (with the -frame option) |
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360 | * the old code did this: |
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361 | * height = listlen * font_height + effect_y_space; */ |
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362 | |
309 | XSelectInput (disp, root, ExposureMask | FocusChangeMask); |
363 | XSelectInput (disp, root, ExposureMask | FocusChangeMask); |
310 | } |
364 | } |
311 | |
365 | |
312 | /* |
366 | /* |
313 | * redraw does a complete redraw, rather than an update (i.e. the area |
367 | * if redraw() is passwd a non-zero argument, it does a complete |
314 | * gets cleared first) |
368 | * redraw, rather than an update. if the argument is zero (and |
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369 | * -noflicker is in effect) then only the lines which have changed |
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370 | * since the last draw are redrawn. |
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371 | * |
315 | * the rest is handled by regular refresh()'es |
372 | * the rest is handled by regular refresh()'es |
316 | */ |
373 | */ |
317 | void |
374 | void |
318 | redraw (void) |
375 | redraw (int redraw_all) |
319 | { |
376 | { |
320 | XSetClipMask (disp, WinGC, None); |
377 | XSetClipMask (disp, WinGC, None); |
321 | refresh (0, 32768, 1); |
378 | refresh (0, 32768, 1, redraw_all); |
322 | } |
379 | } |
323 | |
380 | |
324 | /* Just redraw everything without clearing (i.e. after an EXPOSE event) */ |
381 | /* Just redraw everything without clearing (i.e. after an EXPOSE event) */ |
325 | void |
382 | void |
326 | refresh (int miny, int maxy, int clear) |
383 | refresh (int miny, int maxy, int clear, int refresh_all) |
327 | { |
384 | { |
328 | int lin; |
385 | int lin; |
329 | int offset = (listlen + 1) * font_height; |
386 | int offset = listlen * font_height + font_ascent + effect_y_offset; |
330 | unsigned long black_color = GetColor ("black"); |
387 | unsigned long black_color = GetColor ("black"); |
331 | |
388 | |
332 | miny -= win_y + font_height; |
389 | miny -= win_y + font_height; |
333 | maxy -= win_y - font_height; |
390 | maxy -= win_y - font_height; |
334 | |
391 | |
… | |
… | |
336 | XClearArea (disp, root, win_x, win_y, width, height, False); |
393 | XClearArea (disp, root, win_x, win_y, width, height, False); |
337 | |
394 | |
338 | for (lin = listlen; lin--;) |
395 | for (lin = listlen; lin--;) |
339 | { |
396 | { |
340 | struct linematrix *line = lines + (opt_reverse ? listlen - lin - 1 : lin); |
397 | struct linematrix *line = lines + (opt_reverse ? listlen - lin - 1 : lin); |
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398 | struct displaymatrix *display_line = display + lin; |
341 | |
399 | |
342 | offset -= font_height; |
400 | offset -= font_height; |
343 | |
401 | |
344 | if (offset < miny || offset > maxy) |
402 | if (offset < miny || offset > maxy) |
345 | continue; |
403 | continue; |
346 | |
404 | |
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405 | /* if this line is a different than it was, then it |
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406 | * needs displaying */ |
347 | if (clear && opt_noflicker) |
407 | if (!opt_noflicker |
348 | XClearArea (disp, root, win_x, win_y + offset - font_ascent, width, font_height, False); |
408 | || refresh_all |
349 | |
409 | || display_line->len != line->len |
350 | if (opt_outline) |
410 | || display_line->color != line->color |
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411 | || memcmp (display_line->line, line->line, line->len)) |
351 | { |
412 | { |
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413 | /* don't bother updating the record of what has been |
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414 | * displayed if -noflicker isn't in effect, since we redraw |
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415 | * the whole display every time anyway */ |
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416 | if (opt_noflicker) |
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417 | { |
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418 | /* update the record of what has been displayed; |
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419 | * first make sure the buffer is big enough */ |
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420 | if (display_line->buffer_size < line->len) |
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421 | { |
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422 | display_line->buffer_size = line->len; |
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423 | display_line->line = xrealloc (display_line->line, display_line->buffer_size); |
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424 | } |
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425 | |
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426 | display_line->len = line->len; |
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427 | display_line->color = line->color; |
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428 | memcpy (display_line->line, line->line, line->len); |
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429 | |
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430 | if (clear) |
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431 | XClearArea (disp, root, win_x, win_y + offset - font_ascent, |
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432 | width + effect_x_space, font_height + effect_y_space, False); |
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433 | } |
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434 | |
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435 | if (opt_outline) |
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436 | { |
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437 | int x, y; |
352 | XSetForeground (disp, WinGC, black_color); |
438 | XSetForeground (disp, WinGC, black_color); |
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439 | |
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440 | for (x = -1; x <= 1; x += 2) |
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441 | for (y = -1; y <= 1; y += 2) |
353 | XmbDrawString (disp, root, fontset, WinGC, win_x - 1, |
442 | XmbDrawString (disp, root, fontset, WinGC, |
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443 | win_x + effect_x_offset + x, |
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444 | win_y + y + offset, |
354 | win_y + offset + 1, line->line, line->len); |
445 | line->line, line->len); |
355 | XmbDrawString (disp, root, fontset, WinGC, win_x + 1, |
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356 | win_y + offset + 1, line->line, line->len); |
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357 | XmbDrawString (disp, root, fontset, WinGC, win_x - 1, |
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358 | win_y + offset - 1, line->line, line->len); |
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359 | XmbDrawString (disp, root, fontset, WinGC, win_x + 1, |
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360 | win_y + offset - 1, line->line, line->len); |
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361 | } |
446 | } |
362 | else if (opt_shade) |
447 | else if (opt_shade) |
363 | { |
448 | { |
364 | XSetForeground (disp, WinGC, black_color); |
449 | XSetForeground (disp, WinGC, black_color); |
365 | XmbDrawString (disp, root, fontset, WinGC, win_x + 2, |
450 | XmbDrawString (disp, root, fontset, WinGC, |
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451 | win_x + effect_x_offset + SHADE_X, |
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452 | win_y + offset + SHADE_Y, |
366 | win_y + offset + 2, line->line, line->len); |
453 | line->line, line->len); |
367 | } |
454 | } |
368 | |
455 | |
369 | XSetForeground (disp, WinGC, line->color); |
456 | XSetForeground (disp, WinGC, line->color); |
370 | XmbDrawString (disp, root, fontset, WinGC, win_x, win_y + offset, |
457 | XmbDrawString (disp, root, fontset, WinGC, |
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458 | win_x + effect_x_offset, |
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459 | win_y + offset, |
371 | line->line, line->len); |
460 | line->line, line->len); |
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461 | } |
372 | } |
462 | } |
373 | |
463 | |
374 | if (opt_frame) |
464 | if (opt_frame) |
375 | { |
465 | { |
376 | XSetForeground (disp, WinGC, GetColor (def_color)); |
466 | XSetForeground (disp, WinGC, GetColor (def_color)); |
377 | XDrawRectangle (disp, root, WinGC, win_x - 2, win_y - 2, width + 4, height + 4); |
467 | XDrawRectangle (disp, root, WinGC, win_x - 0, win_y - 0, width - 1, height - 1); |
378 | } |
468 | } |
379 | } |
469 | } |
380 | |
470 | |
381 | #if HAS_REGEX |
471 | #if HAS_REGEX |
382 | void |
472 | void |
… | |
… | |
395 | if (transformre) |
485 | if (transformre) |
396 | { |
486 | { |
397 | int i; |
487 | int i; |
398 | regmatch_t matched[16]; |
488 | regmatch_t matched[16]; |
399 | |
489 | |
400 | i = regexec (&transformre, string, 16, matched, 0); |
490 | i = regexec (transformre, s, 16, matched, 0); |
401 | if (i == 0) |
491 | if (i == 0) |
402 | { /* matched */ |
492 | { /* matched */ |
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493 | int match_start = matched[0].rm_so; |
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494 | int match_end = matched[0].rm_eo; |
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495 | int old_len = match_end - match_start; |
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496 | int new_len = strlen (transform_to); |
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497 | int old_whole_len = strlen (s); |
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498 | |
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499 | printf ("regexp was matched by '%s' - replace with '%s'\n", s, transform_to); |
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500 | printf ("match is from %d to %d\n", match_start, match_end); |
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501 | if (new_len > old_len) |
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502 | s = xrealloc(s, old_whole_len + new_len - old_len); |
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503 | |
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504 | if (new_len != old_len) |
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505 | { |
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506 | memcpy(s + match_end + new_len - old_len, |
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507 | s + match_end, |
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508 | old_whole_len - match_end); |
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509 | s[old_whole_len + new_len - old_len] = '\0'; |
403 | } |
510 | } |
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511 | |
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512 | memcpy (s + match_start, |
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513 | transform_to, |
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514 | new_len); |
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515 | printf ("transformed to '%s'\n", s); |
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516 | } |
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517 | else |
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518 | { |
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519 | printf ("regexp was not matched by '%s'\n", s); |
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520 | } |
404 | } |
521 | } |
405 | } |
522 | } |
406 | #endif |
523 | #endif |
407 | |
524 | |
408 | char * |
525 | char * |
… | |
… | |
418 | |
535 | |
419 | return r; |
536 | return r; |
420 | } |
537 | } |
421 | |
538 | |
422 | /* |
539 | /* |
423 | * This routine should read a single line, no matter how long. |
540 | * This routine can read a line of any length if it is called enough times. |
424 | */ |
541 | */ |
425 | int |
542 | int |
426 | lineinput (struct logfile_entry *logfile) |
543 | lineinput (struct logfile_entry *logfile) |
427 | { |
544 | { |
428 | char buff[1024], *p = buff; |
545 | char buff[1024], *p; |
429 | int ch; |
546 | int ch; |
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547 | /* HACK-2: add on the length of any partial line which we will be appending to */ |
430 | int ofs = logfile->buf ? strlen (logfile->buf) : 0; |
548 | int ofs = logfile->buf ? strlen (logfile->buf) : 0; |
431 | |
549 | |
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550 | /* this loop ensures that the whole line is read, even if it's |
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551 | * longer than the buffer. we need to do this because when --whole |
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552 | * is in effect we don't know whether to display the line or not |
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553 | * until we've seen how (ie. whether) it ends */ |
432 | do |
554 | do |
433 | { |
555 | { |
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556 | p = buff; |
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557 | do |
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558 | { |
434 | ch = fgetc (logfile->fp); |
559 | ch = fgetc (logfile->fp); |
435 | |
560 | |
436 | if (ch == '\n' || ch == EOF) |
561 | if (ch == '\n' || ch == EOF) |
437 | break; |
562 | break; |
438 | else if (ch == '\r') |
563 | else if (ch == '\r') |
439 | continue; /* skip */ |
564 | continue; /* skip */ |
440 | else if (ch == '\t') |
565 | else if (ch == '\t') |
441 | { |
566 | { |
442 | do |
567 | do |
443 | { |
568 | { |
444 | *p++ = ' '; |
569 | *p++ = ' '; |
445 | ofs++; |
570 | ofs++; |
446 | } |
571 | } |
447 | while (ofs & 7); |
572 | while (ofs & 7); |
448 | } |
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449 | else |
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450 | { |
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451 | *p++ = ch; |
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452 | ofs++; |
|
|
453 | } |
|
|
454 | } |
573 | } |
|
|
574 | else |
|
|
575 | { |
|
|
576 | *p++ = ch; |
|
|
577 | ofs++; |
|
|
578 | } |
|
|
579 | } |
455 | while (p < buff + (sizeof buff) - 8 - 1); |
580 | while (p < buff + (sizeof buff) - 8 - 1); |
456 | |
581 | |
457 | if (p == buff && ch == EOF) |
582 | if (p == buff && ch == EOF) |
458 | return 0; |
583 | return 0; |
459 | |
584 | |
460 | *p = 0; |
585 | *p = 0; |
461 | |
586 | |
462 | p = concat_line (logfile->buf, buff); |
587 | p = concat_line (logfile->buf, buff); |
463 | free (logfile->buf); logfile->buf = p; |
588 | free (logfile->buf); logfile->buf = p; |
|
|
589 | } |
|
|
590 | while (ch != '\n' && ch != EOF); |
464 | |
591 | |
465 | logfile->lastpartial = logfile->partial; |
592 | logfile->lastpartial = logfile->partial; |
|
|
593 | /* there are 3 ways we could have exited the loop: reading '\n', |
|
|
594 | * reaching EOF, or filling the buffer; the 2nd and 3rd of these |
|
|
595 | * both result in a partial line */ |
466 | logfile->partial = ch == EOF; |
596 | logfile->partial = ch != '\n'; |
467 | |
597 | |
468 | if (logfile->partial && opt_whole) |
598 | if (logfile->partial && opt_whole) |
469 | return 0; |
599 | return 0; |
470 | |
600 | |
471 | #if HAS_REGEX |
601 | #if HAS_REGEX |
… | |
… | |
543 | { /* file missing? */ |
673 | { /* file missing? */ |
544 | sleep (1); |
674 | sleep (1); |
545 | if (e->fp) |
675 | if (e->fp) |
546 | fclose (e->fp); |
676 | fclose (e->fp); |
547 | if (openlog (e) == NULL) |
677 | if (openlog (e) == NULL) |
548 | break; |
678 | continue; |
|
|
679 | if (fstat (fileno (e->fp), &stats) < 0) |
|
|
680 | continue; |
549 | } |
681 | } |
550 | |
682 | |
551 | if (stats.st_ino != e->inode) |
683 | if (stats.st_ino != e->inode) |
552 | { /* file renamed? */ |
684 | { /* file renamed? */ |
553 | if (e->fp) |
685 | if (e->fp) |
554 | fclose (e->fp); |
686 | fclose (e->fp); |
555 | if (openlog (e) == NULL) |
687 | if (openlog (e) == NULL) |
556 | break; |
688 | continue; |
|
|
689 | if (fstat (fileno (e->fp), &stats) < 0) |
|
|
690 | continue; |
557 | } |
691 | } |
558 | |
692 | |
559 | if (stats.st_size < e->last_size) |
693 | if (stats.st_size < e->last_size) |
560 | { /* file truncated? */ |
694 | { /* file truncated? */ |
561 | fseek (e->fp, 0, SEEK_SET); |
695 | fseek (e->fp, 0, SEEK_SET); |
… | |
… | |
596 | struct logfile_entry *current; |
730 | struct logfile_entry *current; |
597 | |
731 | |
598 | for (cur_line = idx; cur_line > 0; cur_line--) |
732 | for (cur_line = idx; cur_line > 0; cur_line--) |
599 | lines[cur_line] = lines[cur_line - 1]; |
733 | lines[cur_line] = lines[cur_line - 1]; |
600 | |
734 | |
601 | lines[0].line = strdup ("~"); |
735 | lines[0].line = xstrdup ("~"); |
602 | |
736 | |
603 | for (current = loglist; current; current = current->next) |
737 | for (current = loglist; current; current = current->next) |
604 | if (current->index >= 0 && current->index <= idx) |
738 | if (current->index >= 0 && current->index <= idx) |
605 | current->index++; |
739 | current->index++; |
606 | } |
740 | } |
607 | |
741 | |
608 | /* |
742 | /* |
609 | * takes a logical log file line and split it into multiple physical |
743 | * takes a logical log file line and splits it into multiple physical |
610 | * screen lines by splitting it whenever a part becomes too long. |
744 | * screen lines by splitting it whenever a part becomes too long. |
611 | * lal lines will be inserted at position "idx". |
745 | * lal lines will be inserted at position "idx". |
612 | */ |
746 | */ |
613 | static void |
747 | static void |
614 | split_line (int idx, const char *str, unsigned long color) |
748 | split_line (int idx, const char *str, unsigned long color) |
615 | { |
749 | { |
616 | int l = strlen (str); |
750 | int l = strlen (str); |
|
|
751 | int last_wrapped = 0; |
617 | const char *p = str; |
752 | const char *p = str; |
|
|
753 | static int continuation_width = -1; |
|
|
754 | static int continuation_length; |
|
|
755 | |
|
|
756 | /* only calculate the continuation's width once */ |
|
|
757 | if (continuation_width == -1) |
|
|
758 | { |
|
|
759 | continuation_length = strlen (continuation); |
|
|
760 | continuation_width = XmbTextEscapement (fontset, continuation, continuation_length); |
|
|
761 | } |
618 | |
762 | |
619 | do |
763 | do |
620 | { |
764 | { |
621 | const char *beg = p; |
765 | const char *beg = p; |
|
|
766 | int w = last_wrapped ? continuation_width : 0; |
622 | int w = 0; |
767 | int wrapped = 0; |
|
|
768 | const char *break_p = NULL; |
623 | |
769 | |
624 | while (*p) |
770 | while (*p) |
625 | { |
771 | { |
|
|
772 | int cw, len; |
|
|
773 | |
|
|
774 | /* find the length in bytes of the next multibyte character */ |
626 | int len = mblen (p, l); |
775 | len = mblen (p, l); |
627 | if (len <= 0) |
776 | if (len <= 0) |
628 | len = 1; /* ignore (don't skip) ilegal character sequences */ |
777 | len = 1; /* ignore (don't skip) illegal character sequences */ |
629 | |
778 | |
|
|
779 | /* find the width in pixels of the next character */ |
630 | int cw = XmbTextEscapement (fontset, p, len); |
780 | cw = XmbTextEscapement (fontset, p, len); |
631 | if (cw + w >= width) |
781 | if (cw + w > width - effect_x_space) |
|
|
782 | { |
|
|
783 | if (p == beg) |
|
|
784 | { |
|
|
785 | fprintf (stderr, "we can't even fit a single character onto the line\n"); |
|
|
786 | if (len == 1) fprintf (stderr, "(the character we couldn't fit was '%c')\n", *p); |
|
|
787 | exit (1); |
|
|
788 | } |
|
|
789 | |
|
|
790 | wrapped = 1; |
632 | break; |
791 | break; |
|
|
792 | } |
|
|
793 | |
|
|
794 | if (opt_wordwrap && len == 1 && p[0] == ' ') |
|
|
795 | break_p = p; |
633 | |
796 | |
634 | w += cw; |
797 | w += cw; |
635 | p += len; |
798 | p += len; |
636 | l -= len; |
799 | l -= len; |
637 | } |
800 | } |
638 | |
801 | |
|
|
802 | /* if we're wrapping at spaces, and the line is long enough to |
|
|
803 | * wrap, and we've seen a space already, and the space wasn't |
|
|
804 | * the first character on the line, then wrap at the space */ |
|
|
805 | if (opt_wordwrap && wrapped && break_p && break_p != beg) |
|
|
806 | { |
|
|
807 | l += p - break_p; |
|
|
808 | p = break_p; |
|
|
809 | } |
|
|
810 | |
639 | { |
811 | { |
|
|
812 | int len = p - beg + (last_wrapped ? continuation_length : 0); |
640 | char *s = xmalloc (p - beg + 1); |
813 | char *s = xmalloc (len + 1); |
641 | memcpy (s, beg, p - beg); |
814 | if (last_wrapped) |
|
|
815 | { |
|
|
816 | memcpy (s, continuation, continuation_length); |
|
|
817 | memcpy (s + continuation_length, beg, p - beg); |
|
|
818 | } |
|
|
819 | else |
|
|
820 | memcpy (s, beg, len); |
|
|
821 | |
642 | s[p - beg] = 0; |
822 | s[len] = 0; |
643 | insert_line (idx); |
823 | insert_line (idx); |
644 | lines[idx].line = s; |
824 | lines[idx].line = s; |
645 | lines[idx].len = p - beg; |
825 | lines[idx].len = len; |
646 | lines[idx].color = color; |
826 | lines[idx].color = color; |
647 | } |
827 | } |
|
|
828 | |
|
|
829 | /* if we wrapped at a space, don't display the space */ |
|
|
830 | if (opt_wordwrap && wrapped && break_p && break_p != beg) |
|
|
831 | { |
|
|
832 | l--; |
|
|
833 | p++; |
|
|
834 | } |
|
|
835 | |
|
|
836 | last_wrapped = wrapped; |
648 | } |
837 | } |
649 | while (l); |
838 | while (l); |
650 | } |
839 | } |
651 | |
840 | |
652 | /* |
841 | /* |
… | |
… | |
668 | } |
857 | } |
669 | |
858 | |
670 | static void |
859 | static void |
671 | main_loop (void) |
860 | main_loop (void) |
672 | { |
861 | { |
673 | lines = xmalloc (sizeof (struct linematrix) * listlen); |
|
|
674 | int lin; |
862 | int lin; |
675 | time_t lastreload; |
863 | time_t lastreload; |
676 | Region region = XCreateRegion (); |
864 | Region region = XCreateRegion (); |
677 | XEvent xev; |
865 | XEvent xev; |
678 | struct logfile_entry *lastprinted = NULL; |
866 | struct logfile_entry *lastprinted = NULL; |
679 | struct logfile_entry *current; |
867 | struct logfile_entry *current; |
680 | int need_update = 1; |
868 | int need_update = 1; |
681 | |
869 | |
|
|
870 | lines = xmalloc (sizeof (struct linematrix) * listlen); |
|
|
871 | display = xmalloc (sizeof (struct displaymatrix) * listlen); |
|
|
872 | |
682 | lastreload = time (NULL); |
873 | lastreload = time (NULL); |
683 | |
874 | |
684 | /* Initialize linematrix */ |
875 | /* Initialize linematrix */ |
685 | for (lin = 0; lin < listlen; lin++) |
876 | for (lin = 0; lin < listlen; lin++) |
686 | { |
877 | { |
687 | lines[lin].line = strdup ("~"); |
878 | lines[lin].line = xstrdup ("~"); |
688 | lines[lin].len = 1; |
879 | lines[lin].len = 1; |
|
|
880 | display[lin].line = xstrdup(""); |
|
|
881 | display[lin].len = 0; |
|
|
882 | display[lin].buffer_size = 0; |
689 | lines[lin].color = GetColor (def_color); |
883 | lines[lin].color = GetColor (def_color); |
690 | } |
884 | } |
691 | |
885 | |
692 | for (;;) |
886 | for (;;) |
693 | { |
887 | { |
… | |
… | |
718 | |
912 | |
719 | /* print filename if any, and if last line was from |
913 | /* print filename if any, and if last line was from |
720 | * different file */ |
914 | * different file */ |
721 | if (!opt_nofilename && lastprinted != current && current->desc[0]) |
915 | if (!opt_nofilename && lastprinted != current && current->desc[0]) |
722 | { |
916 | { |
723 | char buf[1024]; /* HACK */ |
|
|
724 | snprintf (buf, sizeof (buf), "[%s]", current->desc); |
|
|
725 | split_line (listlen - 1, buf, current->color); |
917 | split_line (listlen - 1, "[", current->color); |
|
|
918 | append_line (listlen - 1, current->desc); |
|
|
919 | append_line (listlen - 1, "]"); |
726 | } |
920 | } |
727 | |
921 | |
|
|
922 | /* if we're dealing with partial lines, and the last |
|
|
923 | * time we showed the line it wasn't finished ... */ |
|
|
924 | if (!opt_whole && current->lastpartial) |
|
|
925 | { |
728 | /* if this is the same file we showed last, and the |
926 | /* if this is the same file we showed last then |
729 | * last time we showed it, it wasn't finished, then |
|
|
730 | * append to the last line shown */ |
927 | append to the last line shown */ |
731 | if (lastprinted == current && current->lastpartial) |
928 | if (lastprinted == current) |
732 | { |
929 | append_line (listlen - 1, current->buf); |
|
|
930 | else |
|
|
931 | { |
|
|
932 | /* but if a different file has been shown in the |
|
|
933 | * mean time, make a new line, starting with the |
|
|
934 | * continuation string */ |
|
|
935 | split_line (listlen - 1, continuation, current->color); |
733 | append_line (listlen - 1, current->buf); |
936 | append_line (listlen - 1, current->buf); |
734 | free (current->buf), current->buf = 0; |
937 | } |
735 | continue; |
938 | } |
736 | } |
|
|
737 | else |
939 | else |
738 | { |
940 | /* otherwise just make a plain and simple new line */ |
739 | split_line (listlen - 1, current->buf, current->color); |
941 | split_line (listlen - 1, current->buf, current->color); |
|
|
942 | |
740 | free (current->buf), current->buf = 0; |
943 | free (current->buf), current->buf = 0; |
741 | } |
|
|
742 | |
|
|
743 | current->index = listlen - 1; |
944 | current->index = listlen - 1; |
744 | lastprinted = current; |
945 | lastprinted = current; |
745 | } |
946 | } |
746 | } |
947 | } |
747 | |
948 | |
748 | if (need_update) |
949 | if (need_update) |
749 | { |
950 | { |
750 | redraw (); |
951 | redraw (0); |
751 | need_update = 0; |
952 | need_update = 0; |
752 | } |
953 | } |
753 | else |
954 | else |
754 | { |
955 | { |
755 | XFlush (disp); |
956 | XFlush (disp); |
… | |
… | |
812 | XRectangle r; |
1013 | XRectangle r; |
813 | |
1014 | |
814 | XSetRegion (disp, WinGC, region); |
1015 | XSetRegion (disp, WinGC, region); |
815 | XClipBox (region, &r); |
1016 | XClipBox (region, &r); |
816 | |
1017 | |
817 | refresh (r.y, r.y + r.height, 0); |
1018 | refresh (r.y, r.y + r.height, 0, 1); |
818 | |
1019 | |
819 | XDestroyRegion (region); |
1020 | XDestroyRegion (region); |
820 | region = XCreateRegion (); |
1021 | region = XCreateRegion (); |
821 | } |
1022 | } |
822 | } |
1023 | } |
… | |
… | |
863 | continuation = argv[++i]; |
1064 | continuation = argv[++i]; |
864 | else if (!strcmp (arg, "-font") || !strcmp (arg, "-fn")) |
1065 | else if (!strcmp (arg, "-font") || !strcmp (arg, "-fn")) |
865 | fontname = argv[++i]; |
1066 | fontname = argv[++i]; |
866 | #if HAS_REGEX |
1067 | #if HAS_REGEX |
867 | else if (!strcmp (arg, "-t")) |
1068 | else if (!strcmp (arg, "-t")) |
|
|
1069 | { |
868 | transform = argv[++i]; |
1070 | transform = argv[++i]; |
|
|
1071 | transform_to = argv[++i]; |
|
|
1072 | printf("transform: '%s' to '%s'\n", transform, transform_to); |
|
|
1073 | } |
869 | #endif |
1074 | #endif |
870 | else if (!strcmp (arg, "-fork") || !strcmp (arg, "-f")) |
1075 | else if (!strcmp (arg, "-fork") || !strcmp (arg, "-f")) |
871 | opt_daemonize = 1; |
1076 | opt_daemonize = 1; |
872 | else if (!strcmp (arg, "-reload")) |
1077 | else if (!strcmp (arg, "-reload")) |
873 | { |
1078 | { |
… | |
… | |
890 | opt_whole = 1; |
1095 | opt_whole = 1; |
891 | else if (!strcmp (arg, "-partial")) |
1096 | else if (!strcmp (arg, "-partial")) |
892 | opt_partial = 1; |
1097 | opt_partial = 1; |
893 | else if (!strcmp (arg, "-update")) |
1098 | else if (!strcmp (arg, "-update")) |
894 | opt_update = opt_partial = 1; |
1099 | opt_update = opt_partial = 1; |
|
|
1100 | else if (!strcmp (arg, "-wordwrap")) |
|
|
1101 | opt_wordwrap = 1; |
895 | else if (!strcmp (arg, "-color")) |
1102 | else if (!strcmp (arg, "-color")) |
896 | def_color = argv[++i]; |
1103 | def_color = argv[++i]; |
897 | else if (!strcmp (arg, "-noinitial")) |
1104 | else if (!strcmp (arg, "-noinitial")) |
898 | opt_noinitial = 1; |
1105 | opt_noinitial = 1; |
899 | else if (!strcmp (arg, "-id")) |
1106 | else if (!strcmp (arg, "-id")) |
… | |
… | |
943 | { |
1150 | { |
944 | if ((e->fp = fdopen (0, "r")) == NULL) |
1151 | if ((e->fp = fdopen (0, "r")) == NULL) |
945 | perror ("fdopen"), exit (1); |
1152 | perror ("fdopen"), exit (1); |
946 | if (fcntl (0, F_SETFL, O_NONBLOCK) < 0) |
1153 | if (fcntl (0, F_SETFL, O_NONBLOCK) < 0) |
947 | perror ("fcntl"), exit (1); |
1154 | perror ("fcntl"), exit (1); |
|
|
1155 | |
948 | e->fname = NULL; |
1156 | e->fname = NULL; |
949 | e->inode = 0; |
1157 | e->inode = 0; |
950 | e->desc = xstrdup ("stdin"); |
1158 | e->desc = xstrdup ("stdin"); |
951 | } |
1159 | } |
952 | else |
1160 | else |
953 | { |
1161 | { |
954 | int l; |
|
|
955 | |
|
|
956 | e->fname = xstrdup (fname); |
1162 | e->fname = xstrdup (fname); |
|
|
1163 | |
957 | if (openlog (e) == NULL) |
1164 | if (openlog (e) == NULL) |
958 | perror (fname), exit (1); |
1165 | perror (fname), exit (1); |
959 | |
1166 | |
960 | l = strlen (desc); |
1167 | e->desc = xstrdup (desc); |
961 | if (l > width - 2) /* must account for [ ] */ |
|
|
962 | l = width - 2; |
|
|
963 | e->desc = xmalloc (l + 1); |
|
|
964 | memcpy (e->desc, desc, l); |
|
|
965 | *(e->desc + l) = '\0'; |
|
|
966 | } |
1168 | } |
967 | |
1169 | |
968 | e->color = GetColor (fcolor); |
1170 | e->color = GetColor (fcolor); |
969 | e->partial = 0; |
1171 | e->partial = 0; |
970 | e->next = NULL; |
1172 | e->next = NULL; |
971 | |
1173 | |
972 | if (!loglist) |
1174 | if (!loglist) |
973 | loglist = e; |
1175 | loglist = e; |
974 | if (loglist_tail) |
1176 | if (loglist_tail) |
975 | loglist_tail->next = e; |
1177 | loglist_tail->next = e; |
|
|
1178 | |
976 | loglist_tail = e; |
1179 | loglist_tail = e; |
977 | } |
1180 | } |
978 | } |
1181 | } |
979 | |
1182 | |
980 | if (!loglist) |
1183 | if (!loglist) |
… | |
… | |
982 | fprintf (stderr, "You did not specify any files to tail\n" |
1185 | fprintf (stderr, "You did not specify any files to tail\n" |
983 | "use %s --help for help\n", argv[0]); |
1186 | "use %s --help for help\n", argv[0]); |
984 | exit (1); |
1187 | exit (1); |
985 | } |
1188 | } |
986 | |
1189 | |
|
|
1190 | if (opt_update && opt_whole) |
|
|
1191 | { |
|
|
1192 | fprintf (stderr, "Specify at most one of -update and -whole\n"); |
|
|
1193 | exit (1); |
|
|
1194 | } |
987 | if (opt_partial && opt_whole) |
1195 | else if (opt_partial && opt_whole) |
988 | { |
1196 | { |
989 | fprintf (stderr, "Specify at most one of -partial and -whole\n"); |
1197 | fprintf (stderr, "Specify at most one of -partial and -whole\n"); |
|
|
1198 | exit (1); |
|
|
1199 | } |
|
|
1200 | |
|
|
1201 | /* HACK-7: do we want to allow both -shade and -outline? */ |
|
|
1202 | if (opt_shade && opt_outline) |
|
|
1203 | { |
|
|
1204 | fprintf (stderr, "Specify at most one of -shade and -outline\n"); |
990 | exit (1); |
1205 | exit (1); |
991 | } |
1206 | } |
992 | |
1207 | |
993 | if (opt_partial) |
1208 | if (opt_partial) |
994 | /* if we specifically requested to see partial lines then don't insist on whole lines */ |
1209 | /* if we specifically requested to see partial lines then don't insist on whole lines */ |
995 | opt_whole = 0; |
1210 | opt_whole = 0; |
996 | else if (file_count > 1) |
1211 | else if (file_count > 1) |
997 | /* otherwise, if we've viewing multiple files, default to showing whole lines */ |
1212 | /* otherwise, if we're viewing multiple files, default to showing whole lines */ |
998 | opt_whole = 1; |
1213 | opt_whole = 1; |
999 | |
1214 | |
1000 | #if HAS_REGEX |
1215 | #if HAS_REGEX |
1001 | if (transform) |
1216 | if (transform) |
1002 | { |
1217 | { |
1003 | int i; |
1218 | int i; |
1004 | |
1219 | |
|
|
1220 | printf("compiling regexp '%s'\n", transform); |
1005 | transformre = xmalloc (sizeof (transformre)); |
1221 | transformre = xmalloc (sizeof (regex_t)); |
1006 | i = regcomp (&transformre, transform, REG_EXTENDED); |
1222 | i = regcomp (transformre, transform, REG_EXTENDED); |
1007 | if (i != 0) |
1223 | if (i != 0) |
1008 | { |
1224 | { |
1009 | char buf[512]; |
1225 | char buf[512]; |
1010 | |
1226 | |
1011 | regerror (i, &transformre, buf, sizeof (buf)); |
1227 | regerror (i, transformre, buf, sizeof (buf)); |
1012 | fprintf (stderr, "Cannot compile regular expression: %s\n", buf); |
1228 | fprintf (stderr, "Cannot compile regular expression: %s\n", buf); |
1013 | } |
1229 | } |
|
|
1230 | else |
|
|
1231 | { |
|
|
1232 | printf("compiled '%s' OK to %x\n", transform, (int)transformre); |
|
|
1233 | } |
1014 | } |
1234 | } |
1015 | #endif |
1235 | #endif |
1016 | |
1236 | |
1017 | InitWindow (); |
1237 | InitWindow (); |
1018 | |
1238 | |
… | |
… | |
1049 | { |
1269 | { |
1050 | void *p; |
1270 | void *p; |
1051 | |
1271 | |
1052 | while ((p = strdup (string)) == NULL) |
1272 | while ((p = strdup (string)) == NULL) |
1053 | { |
1273 | { |
1054 | fprintf (stderr, "Memory exausted."); |
1274 | fprintf (stderr, "Memory exhausted in xstrdup().\n"); |
1055 | sleep (10); |
1275 | sleep (10); |
1056 | } |
1276 | } |
1057 | |
1277 | |
1058 | return p; |
1278 | return p; |
1059 | } |
1279 | } |
… | |
… | |
1063 | { |
1283 | { |
1064 | void *p; |
1284 | void *p; |
1065 | |
1285 | |
1066 | while ((p = malloc (size)) == NULL) |
1286 | while ((p = malloc (size)) == NULL) |
1067 | { |
1287 | { |
1068 | fprintf (stderr, "Memory exausted."); |
1288 | fprintf (stderr, "Memory exhausted in xmalloc().\n"); |
|
|
1289 | sleep (10); |
|
|
1290 | } |
|
|
1291 | |
|
|
1292 | return p; |
|
|
1293 | } |
|
|
1294 | |
|
|
1295 | void * |
|
|
1296 | xrealloc (void *ptr, size_t size) |
|
|
1297 | { |
|
|
1298 | void *p; |
|
|
1299 | |
|
|
1300 | while ((p = realloc (ptr, size)) == NULL) |
|
|
1301 | { |
|
|
1302 | fprintf (stderr, "Memory exhausted in xrealloc().\n"); |
1069 | sleep (10); |
1303 | sleep (10); |
1070 | } |
1304 | } |
1071 | |
1305 | |
1072 | return p; |
1306 | return p; |
1073 | } |
1307 | } |
… | |
… | |
1086 | " -reverse print new lines at the top\n" |
1320 | " -reverse print new lines at the top\n" |
1087 | " -whole wait for \\n before showing a line\n" |
1321 | " -whole wait for \\n before showing a line\n" |
1088 | " -partial show lines even if they don't end with a \\n\n" |
1322 | " -partial show lines even if they don't end with a \\n\n" |
1089 | " -update allow updates to old partial lines\n" |
1323 | " -update allow updates to old partial lines\n" |
1090 | " -cont string to prefix continued partial lines with\n" |
1324 | " -cont string to prefix continued partial lines with\n" |
|
|
1325 | " -wordwrap wrap long lines at spaces to avoid breaking words\n" |
1091 | " defaults to \"[+]\"\n" |
1326 | " defaults to \"[+]\"\n" |
1092 | " -shade add shading to font\n" |
1327 | " -shade add shading to font\n" |
1093 | " -noinitial don't display the last file lines on\n" |
1328 | " -noinitial don't display the last file lines on\n" |
1094 | " startup\n" |
1329 | " startup\n" |
1095 | " -i | -interval seconds interval between checks (fractional\n" |
1330 | " -i | -interval seconds interval between checks (fractional\n" |
1096 | " values o.k.). Default 2.4 seconds\n" |
1331 | " values o.k.). Default 2.4 seconds\n" |
1097 | " -V display version information and exit\n" |
1332 | " -V display version information and exit\n" |
1098 | "\n"); |
1333 | "\n"); |
1099 | printf ("Example:\n%s -g 80x25+100+50 -font fixed /var/log/messages,green " |
1334 | printf ("Example:\n%s -g 800x250+100+50 -font fixed /var/log/messages,green " |
1100 | "/var/log/secure,red,'ALERT'\n", myname); |
1335 | "/var/log/secure,red,'ALERT'\n", myname); |
1101 | exit (0); |
1336 | exit (0); |
1102 | } |
1337 | } |
1103 | |
1338 | |
1104 | void |
1339 | void |
… | |
… | |
1109 | } |
1344 | } |
1110 | |
1345 | |
1111 | int |
1346 | int |
1112 | daemonize (void) |
1347 | daemonize (void) |
1113 | { |
1348 | { |
|
|
1349 | pid_t pid; |
|
|
1350 | |
1114 | switch (fork ()) |
1351 | switch (pid = fork ()) |
1115 | { |
1352 | { |
1116 | case -1: |
1353 | case -1: |
1117 | return -1; |
1354 | return -1; |
1118 | case 0: |
1355 | case 0: |
1119 | break; |
1356 | break; |
1120 | default: |
1357 | default: |
|
|
1358 | /*printf("%d\n", pid);*/ |
1121 | _exit (0); |
1359 | exit (0); |
1122 | } |
1360 | } |
1123 | |
1361 | |
1124 | if (setsid () == -1) |
1362 | if (setsid () == -1) |
1125 | return -1; |
1363 | return -1; |
1126 | |
1364 | |