1 |
pcg |
1.1 |
/* |
2 |
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* Copyright 2001 by Marco d'Itri <md@linux.it> |
3 |
pcg |
1.29 |
* Copyright 2000,2001,2002,2003,2004 |
4 |
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* Marc Lehmann <pcg@goof.com>, |
5 |
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* and many others, see README |
6 |
chris_moore |
1.52 |
* |
7 |
pcg |
1.29 |
* Original version by Mike Baker. |
8 |
pcg |
1.1 |
* |
9 |
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* This program is free software; you can redistribute it and/or modify |
10 |
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* it under the terms of the GNU General Public License as published by |
11 |
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* the Free Software Foundation; either version 2 of the License, or |
12 |
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* (at your option) any later version. |
13 |
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* |
14 |
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* This program is distributed in the hope that it will be useful, |
15 |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 |
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* GNU General Public License for more details. |
18 |
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* |
19 |
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* You should have received a copy of the GNU General Public License |
20 |
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* along with this program; if not, write to the Free Software |
21 |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
22 |
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*/ |
23 |
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24 |
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#include "config.h" |
25 |
chris_moore |
1.49 |
#include <assert.h> |
26 |
pcg |
1.1 |
#include <stdlib.h> |
27 |
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#include <stdio.h> |
28 |
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#include <unistd.h> |
29 |
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#include <string.h> |
30 |
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#include <signal.h> |
31 |
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#include <time.h> |
32 |
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#include <fcntl.h> |
33 |
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#include <errno.h> |
34 |
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#include <sys/time.h> |
35 |
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#include <sys/stat.h> |
36 |
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#include <sys/types.h> |
37 |
pcg |
1.7 |
#include <locale.h> |
38 |
pcg |
1.11 |
#include <ctype.h> |
39 |
|
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#include <stdarg.h> |
40 |
chris_moore |
1.26 |
#include <X11/Xlib.h> |
41 |
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#include <X11/Xatom.h> |
42 |
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#include <X11/Xutil.h> |
43 |
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|
44 |
pcg |
1.1 |
#if HAS_REGEX |
45 |
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#include <regex.h> |
46 |
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#endif |
47 |
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|
48 |
chris_moore |
1.27 |
#define SHADE_X 2 |
49 |
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#define SHADE_Y 2 |
50 |
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|
51 |
chris_moore |
1.52 |
/* some italic fonts still go over the margin - this margin of error cleans up the mess */ |
52 |
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#define MARGIN_OF_ERROR 2 |
53 |
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|
54 |
pcg |
1.1 |
/* data structures */ |
55 |
pcg |
1.11 |
struct logfile_entry |
56 |
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{ |
57 |
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struct logfile_entry *next; |
58 |
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59 |
chris_moore |
1.49 |
char *fname; /* name of file */ |
60 |
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char *desc; /* alternative description */ |
61 |
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char *buf; /* text read but not yet displayed */ |
62 |
chris_moore |
1.52 |
const char *fontname; |
63 |
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XFontSet fontset; |
64 |
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int font_height; |
65 |
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int font_ascent; |
66 |
chris_moore |
1.49 |
FILE *fp; /* FILE struct associated with file */ |
67 |
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ino_t inode; /* inode of the file opened */ |
68 |
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off_t last_size; /* file size at the last check */ |
69 |
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unsigned long color; /* color to be used for printing */ |
70 |
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int partial; /* true if the last line isn't complete */ |
71 |
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int lastpartial; /* true if the previous output wasn't complete */ |
72 |
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struct line_node *last; /* last line we output */ |
73 |
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int modified; /* true if line is modified & needs displaying */ |
74 |
pcg |
1.1 |
}; |
75 |
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|
76 |
chris_moore |
1.49 |
struct line_node |
77 |
pcg |
1.11 |
{ |
78 |
chris_moore |
1.49 |
struct line_node *next; |
79 |
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struct line_node *prev; |
80 |
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struct logfile_entry *logfile; |
81 |
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82 |
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char *line; /* the text of the line (so far) */ |
83 |
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int len; /* the length of the line (in bytes) so far */ |
84 |
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int wrapped_left; /* true if wrapped from the previous line */ |
85 |
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int wrapped_right; /* true if wrapped to the next line */ |
86 |
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struct breakinfo *breaks; /* array of indicies to spaces if wrapped_right */ |
87 |
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int num_words; /* the number of words in the line */ |
88 |
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int free_pixels; /* the number of free pixels to spread out */ |
89 |
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}; |
90 |
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91 |
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struct breakinfo |
92 |
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{ |
93 |
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int index; /* index into string of start of substring */ |
94 |
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int width; /* width in pixels of start of substring */ |
95 |
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int len; /* length of substring */ |
96 |
pcg |
1.1 |
}; |
97 |
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98 |
chris_moore |
1.28 |
struct displaymatrix |
99 |
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{ |
100 |
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char *line; |
101 |
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int len; |
102 |
chris_moore |
1.52 |
int offset; |
103 |
chris_moore |
1.28 |
int buffer_size; |
104 |
chris_moore |
1.40 |
unsigned long color; |
105 |
chris_moore |
1.28 |
}; |
106 |
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|
107 |
pcg |
1.1 |
/* global variables */ |
108 |
chris_moore |
1.49 |
struct line_node *linelist = NULL, *linelist_tail = NULL; |
109 |
chris_moore |
1.28 |
struct displaymatrix *display; |
110 |
chris_moore |
1.49 |
int continuation_width = -1; |
111 |
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int continuation_color; |
112 |
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int continuation_length; |
113 |
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114 |
chris_moore |
1.52 |
/* HACK - ideally listlen will start at however many '~'s will fit on |
115 |
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* the screen */ |
116 |
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int width = STD_WIDTH, height = STD_HEIGHT, listlen = 50; |
117 |
pcg |
1.1 |
int win_x = LOC_X, win_y = LOC_Y; |
118 |
chris_moore |
1.27 |
int effect_x_space, effect_y_space; /* how much space does shading / outlining take up */ |
119 |
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int effect_x_offset, effect_y_offset; /* and how does it offset the usable space */ |
120 |
pcg |
1.1 |
int do_reopen; |
121 |
pcg |
1.21 |
struct timeval interval = { 2, 400000 }; |
122 |
pcg |
1.1 |
|
123 |
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/* command line options */ |
124 |
pcg |
1.5 |
int opt_noinitial, opt_shade, opt_frame, opt_reverse, opt_nofilename, |
125 |
chris_moore |
1.24 |
opt_outline, opt_noflicker, opt_whole, opt_update, opt_wordwrap, |
126 |
chris_moore |
1.49 |
opt_justify, geom_mask, reload = 0; |
127 |
pcg |
1.1 |
const char *command = NULL, |
128 |
pcg |
1.11 |
*fontname = USE_FONT, *dispname = NULL, *def_color = DEF_COLOR, |
129 |
chris_moore |
1.49 |
*continuation = "|| ", *cont_color = DEF_CONT_COLOR; |
130 |
pcg |
1.1 |
|
131 |
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struct logfile_entry *loglist = NULL, *loglist_tail = NULL; |
132 |
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133 |
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Display *disp; |
134 |
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Window root; |
135 |
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GC WinGC; |
136 |
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137 |
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#if HAS_REGEX |
138 |
pcg |
1.11 |
struct re_list |
139 |
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{ |
140 |
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regex_t from; |
141 |
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const char *to; |
142 |
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struct re_list *next; |
143 |
pcg |
1.1 |
}; |
144 |
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struct re_list *re_head, *re_tail; |
145 |
chris_moore |
1.26 |
char *transform_to = NULL; |
146 |
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regex_t *transformre; |
147 |
pcg |
1.1 |
#endif |
148 |
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149 |
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150 |
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/* prototypes */ |
151 |
pcg |
1.11 |
void list_files (int); |
152 |
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void force_reopen (int); |
153 |
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void force_refresh (int); |
154 |
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void blank_window (int); |
155 |
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156 |
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void InitWindow (void); |
157 |
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unsigned long GetColor (const char *); |
158 |
chris_moore |
1.28 |
void redraw (int); |
159 |
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void refresh (int, int, int, int); |
160 |
pcg |
1.11 |
|
161 |
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void transform_line (char *s); |
162 |
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int lineinput (struct logfile_entry *); |
163 |
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void reopen (void); |
164 |
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void check_open_files (void); |
165 |
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FILE *openlog (struct logfile_entry *); |
166 |
pcg |
1.12 |
static void main_loop (void); |
167 |
pcg |
1.11 |
|
168 |
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void display_version (void); |
169 |
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void display_help (char *); |
170 |
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void install_signal (int, void (*)(int)); |
171 |
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void *xstrdup (const char *); |
172 |
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void *xmalloc (size_t); |
173 |
chris_moore |
1.28 |
void *xrealloc (void *, size_t); |
174 |
pcg |
1.11 |
int daemonize (void); |
175 |
pcg |
1.1 |
|
176 |
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/* signal handlers */ |
177 |
pcg |
1.11 |
void |
178 |
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list_files (int dummy) |
179 |
pcg |
1.1 |
{ |
180 |
pcg |
1.11 |
struct logfile_entry *e; |
181 |
pcg |
1.1 |
|
182 |
pcg |
1.11 |
fprintf (stderr, "Files opened:\n"); |
183 |
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for (e = loglist; e; e = e->next) |
184 |
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fprintf (stderr, "\t%s (%s)\n", e->fname, e->desc); |
185 |
pcg |
1.1 |
} |
186 |
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187 |
pcg |
1.11 |
void |
188 |
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force_reopen (int dummy) |
189 |
pcg |
1.1 |
{ |
190 |
pcg |
1.11 |
do_reopen = 1; |
191 |
pcg |
1.1 |
} |
192 |
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|
193 |
pcg |
1.11 |
void |
194 |
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force_refresh (int dummy) |
195 |
pcg |
1.1 |
{ |
196 |
chris_moore |
1.28 |
redraw (1); |
197 |
pcg |
1.1 |
} |
198 |
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|
199 |
pcg |
1.11 |
void |
200 |
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blank_window (int dummy) |
201 |
pcg |
1.1 |
{ |
202 |
chris_moore |
1.52 |
XClearArea (disp, root, win_x, win_y, width + MARGIN_OF_ERROR, height, False); |
203 |
pcg |
1.11 |
XFlush (disp); |
204 |
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exit (0); |
205 |
pcg |
1.1 |
} |
206 |
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207 |
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/* X related functions */ |
208 |
pcg |
1.11 |
unsigned long |
209 |
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GetColor (const char *ColorName) |
210 |
pcg |
1.1 |
{ |
211 |
pcg |
1.11 |
XColor Color; |
212 |
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XWindowAttributes Attributes; |
213 |
pcg |
1.1 |
|
214 |
pcg |
1.11 |
XGetWindowAttributes (disp, root, &Attributes); |
215 |
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Color.pixel = 0; |
216 |
pcg |
1.8 |
|
217 |
pcg |
1.11 |
if (!XParseColor (disp, Attributes.colormap, ColorName, &Color)) |
218 |
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fprintf (stderr, "can't parse %s\n", ColorName); |
219 |
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else if (!XAllocColor (disp, Attributes.colormap, &Color)) |
220 |
|
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fprintf (stderr, "can't allocate %s\n", ColorName); |
221 |
pcg |
1.8 |
|
222 |
pcg |
1.11 |
return Color.pixel; |
223 |
pcg |
1.1 |
} |
224 |
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|
225 |
pcg |
1.11 |
static Window |
226 |
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root_window (Display * display, int screen_number) |
227 |
pcg |
1.7 |
{ |
228 |
pcg |
1.11 |
Atom SWM_VROOT = XInternAtom (display, "__SWM_VROOT", False); |
229 |
pcg |
1.7 |
Window real_root_window = RootWindow (display, screen_number); |
230 |
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|
231 |
pcg |
1.11 |
if (root) /* root window set via option */ |
232 |
pcg |
1.8 |
return root; |
233 |
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|
234 |
pcg |
1.11 |
if (SWM_VROOT != None) |
235 |
pcg |
1.7 |
{ |
236 |
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Window unused, *windows; |
237 |
|
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unsigned int count; |
238 |
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|
239 |
|
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if (XQueryTree (display, real_root_window, &unused, &unused, &windows, |
240 |
pcg |
1.11 |
&count)) |
241 |
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{ |
242 |
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int i; |
243 |
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|
244 |
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for (i = 0; i < count; i++) |
245 |
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{ |
246 |
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Atom type; |
247 |
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int format; |
248 |
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unsigned long nitems, bytes_after_return; |
249 |
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unsigned char *virtual_root_window; |
250 |
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|
251 |
|
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if (XGetWindowProperty (display, windows[i], SWM_VROOT, |
252 |
|
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0, 1, False, XA_WINDOW, &type, &format, |
253 |
|
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&nitems, &bytes_after_return, |
254 |
|
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&virtual_root_window) == Success) |
255 |
|
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{ |
256 |
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if (type != None) |
257 |
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{ |
258 |
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if (type == XA_WINDOW) |
259 |
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{ |
260 |
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XFree (windows); |
261 |
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return (Window) virtual_root_window; |
262 |
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} |
263 |
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else |
264 |
|
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fprintf (stderr, |
265 |
|
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"__SWM_VROOT property type mismatch"); |
266 |
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} |
267 |
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} |
268 |
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else |
269 |
|
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fprintf (stderr, |
270 |
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"failed to get __SWM_VROOT property on window 0x%lx", |
271 |
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windows[i]); |
272 |
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} |
273 |
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|
274 |
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if (count) |
275 |
|
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XFree (windows); |
276 |
|
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} |
277 |
pcg |
1.7 |
else |
278 |
pcg |
1.11 |
fprintf (stderr, "Can't query tree on root window 0x%lx", |
279 |
|
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real_root_window); |
280 |
pcg |
1.7 |
} |
281 |
|
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else |
282 |
|
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/* This shouldn't happen. The Xlib documentation is wrong BTW. */ |
283 |
|
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fprintf (stderr, "Can't intern atom __SWM_VROOT"); |
284 |
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|
285 |
|
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return real_root_window; |
286 |
|
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} |
287 |
|
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|
288 |
pcg |
1.11 |
void |
289 |
|
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InitWindow (void) |
290 |
pcg |
1.1 |
{ |
291 |
pcg |
1.11 |
XGCValues gcv; |
292 |
|
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unsigned long gcm; |
293 |
|
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int screen, ScreenWidth, ScreenHeight; |
294 |
chris_moore |
1.52 |
struct logfile_entry *e; |
295 |
pcg |
1.11 |
|
296 |
|
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if (!(disp = XOpenDisplay (dispname))) |
297 |
|
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{ |
298 |
|
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fprintf (stderr, "Can't open display %s.\n", dispname); |
299 |
|
|
exit (1); |
300 |
|
|
} |
301 |
|
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|
302 |
|
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screen = DefaultScreen (disp); |
303 |
|
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ScreenHeight = DisplayHeight (disp, screen); |
304 |
|
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ScreenWidth = DisplayWidth (disp, screen); |
305 |
|
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|
306 |
|
|
root = root_window (disp, screen); |
307 |
|
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|
308 |
|
|
gcm = GCBackground; |
309 |
|
|
gcv.graphics_exposures = True; |
310 |
|
|
WinGC = XCreateGC (disp, root, gcm, &gcv); |
311 |
|
|
XMapWindow (disp, root); |
312 |
|
|
XSetForeground (disp, WinGC, GetColor (DEF_COLOR)); |
313 |
|
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|
314 |
chris_moore |
1.52 |
for (e = loglist; e; e = e->next) |
315 |
|
|
{ |
316 |
|
|
char **missing_charset_list; |
317 |
|
|
int missing_charset_count; |
318 |
|
|
char *def_string; |
319 |
|
|
|
320 |
|
|
e->fontset = XCreateFontSet (disp, e->fontname, |
321 |
|
|
&missing_charset_list, &missing_charset_count, |
322 |
|
|
&def_string); |
323 |
|
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|
324 |
|
|
if (missing_charset_count) |
325 |
|
|
{ |
326 |
|
|
fprintf (stderr, |
327 |
|
|
"Missing charsets in String to FontSet conversion (%s)\n", |
328 |
|
|
missing_charset_list[0]); |
329 |
|
|
XFreeStringList (missing_charset_list); |
330 |
|
|
} |
331 |
|
|
|
332 |
|
|
if (!e->fontset) |
333 |
|
|
{ |
334 |
|
|
fprintf (stderr, "unable to create fontset for font '%s', exiting.\n", e->fontname); |
335 |
|
|
exit (1); |
336 |
|
|
} |
337 |
pcg |
1.11 |
|
338 |
|
|
{ |
339 |
chris_moore |
1.52 |
XFontSetExtents *xfe = XExtentsOfFontSet (e->fontset); |
340 |
|
|
|
341 |
|
|
e->font_height = xfe->max_logical_extent.height; |
342 |
|
|
e->font_ascent = -xfe->max_logical_extent.y; |
343 |
pcg |
1.11 |
} |
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
if (geom_mask & XNegative) |
347 |
|
|
win_x = win_x + ScreenWidth - width; |
348 |
|
|
if (geom_mask & YNegative) |
349 |
|
|
win_y = win_y + ScreenHeight - height; |
350 |
|
|
|
351 |
chris_moore |
1.27 |
if (opt_outline) |
352 |
|
|
{ |
353 |
|
|
/* adding outline increases the total width and height by 2 |
354 |
chris_moore |
1.49 |
pixels each, and offsets the text one pixel right and one |
355 |
|
|
pixel down */ |
356 |
chris_moore |
1.27 |
effect_x_space = effect_y_space = 2; |
357 |
|
|
effect_x_offset = effect_y_offset = 1; |
358 |
|
|
} |
359 |
|
|
else if (opt_shade) |
360 |
|
|
{ |
361 |
|
|
/* adding a shadow increases the space used */ |
362 |
chris_moore |
1.49 |
effect_x_space = abs (SHADE_X); |
363 |
|
|
effect_y_space = abs (SHADE_Y); |
364 |
chris_moore |
1.52 |
|
365 |
chris_moore |
1.27 |
/* if the shadow is to the right and below then we don't need |
366 |
|
|
* to move the text to make space for it, but shadows to the left |
367 |
|
|
* and above need accomodating */ |
368 |
|
|
effect_x_offset = SHADE_X > 0 ? 0 : -SHADE_X; |
369 |
|
|
effect_y_offset = SHADE_Y > 0 ? 0 : -SHADE_Y; |
370 |
|
|
} |
371 |
|
|
else |
372 |
|
|
{ |
373 |
|
|
effect_x_space = effect_y_space = 0; |
374 |
|
|
effect_x_offset = effect_y_offset = 0; |
375 |
|
|
} |
376 |
|
|
|
377 |
pcg |
1.11 |
XSelectInput (disp, root, ExposureMask | FocusChangeMask); |
378 |
pcg |
1.1 |
} |
379 |
|
|
|
380 |
|
|
/* |
381 |
chris_moore |
1.49 |
* if redraw () is passwd a non-zero argument, it does a complete |
382 |
chris_moore |
1.28 |
* redraw, rather than an update. if the argument is zero (and |
383 |
|
|
* -noflicker is in effect) then only the lines which have changed |
384 |
|
|
* since the last draw are redrawn. |
385 |
|
|
* |
386 |
chris_moore |
1.49 |
* the rest is handled by regular refresh ()'es |
387 |
pcg |
1.1 |
*/ |
388 |
pcg |
1.11 |
void |
389 |
chris_moore |
1.28 |
redraw (int redraw_all) |
390 |
pcg |
1.1 |
{ |
391 |
pcg |
1.20 |
XSetClipMask (disp, WinGC, None); |
392 |
chris_moore |
1.28 |
refresh (0, 32768, 1, redraw_all); |
393 |
pcg |
1.1 |
} |
394 |
|
|
|
395 |
chris_moore |
1.52 |
void draw_text (Display *disp, Window root, GC WinGC, int x, int y, struct line_node *line, int foreground) |
396 |
chris_moore |
1.49 |
{ |
397 |
|
|
if (line->wrapped_right && opt_justify && line->breaks) |
398 |
|
|
{ |
399 |
|
|
int i; |
400 |
|
|
for (i = 0; i < line->num_words; i++) { |
401 |
chris_moore |
1.52 |
XmbDrawString (disp, root, line->logfile->fontset, WinGC, |
402 |
chris_moore |
1.49 |
x + line->breaks[i].width + ((i * line->free_pixels) / (line->num_words - 1)) + continuation_width * line->wrapped_left, y, |
403 |
|
|
line->line + line->breaks[i].index, |
404 |
|
|
line->breaks[i].len); |
405 |
|
|
} |
406 |
|
|
if (line->wrapped_left) |
407 |
|
|
{ |
408 |
|
|
if (foreground) XSetForeground (disp, WinGC, continuation_color); |
409 |
chris_moore |
1.52 |
XmbDrawString (disp, root, line->logfile->fontset, WinGC, x, y, continuation, continuation_length); |
410 |
chris_moore |
1.49 |
} |
411 |
|
|
} |
412 |
|
|
else |
413 |
|
|
{ |
414 |
chris_moore |
1.52 |
XmbDrawString (disp, root, line->logfile->fontset, WinGC, x + continuation_width * line->wrapped_left, y, line->line, line->len); |
415 |
chris_moore |
1.49 |
if (line->wrapped_left) |
416 |
|
|
{ |
417 |
|
|
if (foreground) XSetForeground (disp, WinGC, continuation_color); |
418 |
chris_moore |
1.52 |
XmbDrawString (disp, root, line->logfile->fontset, WinGC, x, y, continuation, continuation_length); |
419 |
chris_moore |
1.49 |
} |
420 |
|
|
} |
421 |
|
|
} |
422 |
|
|
|
423 |
pcg |
1.1 |
/* Just redraw everything without clearing (i.e. after an EXPOSE event) */ |
424 |
pcg |
1.11 |
void |
425 |
chris_moore |
1.28 |
refresh (int miny, int maxy, int clear, int refresh_all) |
426 |
pcg |
1.1 |
{ |
427 |
chris_moore |
1.49 |
int lin = 0; |
428 |
chris_moore |
1.52 |
int space = height; |
429 |
chris_moore |
1.49 |
int offset; |
430 |
pcg |
1.11 |
unsigned long black_color = GetColor ("black"); |
431 |
chris_moore |
1.49 |
struct line_node *line; |
432 |
|
|
int step_per_line; |
433 |
|
|
int foreground = 0; |
434 |
|
|
|
435 |
|
|
if (opt_reverse) |
436 |
chris_moore |
1.52 |
offset = effect_y_offset; |
437 |
chris_moore |
1.49 |
else |
438 |
chris_moore |
1.52 |
offset = height + effect_y_offset; |
439 |
pcg |
1.1 |
|
440 |
chris_moore |
1.52 |
miny -= win_y; |
441 |
|
|
maxy -= win_y; |
442 |
pcg |
1.1 |
|
443 |
pcg |
1.22 |
if (clear && !opt_noflicker) |
444 |
chris_moore |
1.52 |
XClearArea (disp, root, win_x, win_y, width + MARGIN_OF_ERROR, height, False); |
445 |
pcg |
1.22 |
|
446 |
chris_moore |
1.52 |
for (line = linelist; line; line = line->next, lin++) |
447 |
pcg |
1.11 |
{ |
448 |
chris_moore |
1.52 |
struct displaymatrix *display_line; |
449 |
|
|
|
450 |
|
|
if (opt_noflicker && lin >= listlen) |
451 |
|
|
{ |
452 |
|
|
int i = listlen; |
453 |
|
|
listlen *= 1.5; |
454 |
|
|
display = xrealloc(display, listlen * sizeof(struct displaymatrix)); |
455 |
|
|
for (; i < listlen; i++) |
456 |
|
|
{ |
457 |
|
|
display[i].line = xstrdup (""); |
458 |
|
|
display[i].len = 0; |
459 |
|
|
display[i].offset = 0; |
460 |
|
|
display[i].buffer_size = 0; |
461 |
|
|
} |
462 |
|
|
} |
463 |
|
|
|
464 |
|
|
display_line = display + lin; |
465 |
|
|
|
466 |
|
|
step_per_line = line->logfile->font_height + effect_y_space; |
467 |
|
|
if (step_per_line > space) |
468 |
|
|
break; |
469 |
|
|
|
470 |
|
|
if (!opt_reverse) |
471 |
|
|
offset -= step_per_line; |
472 |
|
|
|
473 |
|
|
offset += line->logfile->font_ascent; |
474 |
pcg |
1.7 |
|
475 |
chris_moore |
1.52 |
miny -= line->logfile->font_height; |
476 |
|
|
maxy += line->logfile->font_height; |
477 |
jebusbfb |
1.4 |
|
478 |
chris_moore |
1.52 |
if (offset >= miny && offset <= maxy) |
479 |
pcg |
1.29 |
{ |
480 |
chris_moore |
1.52 |
/* if this line is a different than it was, then it |
481 |
|
|
* needs displaying */ |
482 |
|
|
if (!opt_noflicker |
483 |
|
|
|| refresh_all |
484 |
|
|
|| display_line->len != line->len |
485 |
|
|
|| display_line->color != line->logfile->color |
486 |
|
|
|| display_line->offset != offset |
487 |
|
|
|| memcmp (display_line->line, line->line, line->len)) |
488 |
|
|
{ |
489 |
|
|
/* don't bother updating the record of what has been |
490 |
|
|
* displayed if -noflicker isn't in effect, since we redraw |
491 |
|
|
* the whole display every time anyway */ |
492 |
|
|
if (opt_noflicker) |
493 |
|
|
{ |
494 |
|
|
/* update the record of what has been displayed; |
495 |
|
|
* first make sure the buffer is big enough */ |
496 |
|
|
if (display_line->buffer_size < line->len) |
497 |
|
|
{ |
498 |
|
|
display_line->buffer_size = line->len; |
499 |
|
|
display_line->line = xrealloc (display_line->line, display_line->buffer_size); |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
display_line->len = line->len; |
503 |
|
|
display_line->color = line->logfile->color; |
504 |
|
|
display_line->offset = offset; |
505 |
|
|
memcpy (display_line->line, line->line, line->len); |
506 |
|
|
|
507 |
|
|
if (clear) |
508 |
|
|
{ |
509 |
|
|
#ifdef DEBUG |
510 |
|
|
static int toggle; |
511 |
|
|
toggle = 1 - toggle; |
512 |
|
|
XSetForeground (disp, WinGC, toggle ? GetColor ("cyan") : GetColor ("yellow")); |
513 |
|
|
XFillRectangle (disp, root, WinGC, win_x, win_y + offset - line->logfile->font_ascent, |
514 |
|
|
width, step_per_line); |
515 |
|
|
#else /* DEBUG */ |
516 |
|
|
XClearArea (disp, root, win_x, win_y + offset - line->logfile->font_ascent, |
517 |
|
|
width + MARGIN_OF_ERROR, step_per_line, False); |
518 |
|
|
#endif /* DEBUG */ |
519 |
|
|
} |
520 |
|
|
} |
521 |
|
|
|
522 |
|
|
if (opt_outline) |
523 |
|
|
{ |
524 |
|
|
int x, y; |
525 |
|
|
XSetForeground (disp, WinGC, black_color); |
526 |
|
|
|
527 |
|
|
for (x = -1; x <= 1; x += 2) |
528 |
|
|
for (y = -1; y <= 1; y += 2) |
529 |
|
|
draw_text (disp, root, WinGC, |
530 |
|
|
win_x + effect_x_offset + x, |
531 |
|
|
win_y + y + offset, line, foreground = 0); |
532 |
|
|
} |
533 |
|
|
else if (opt_shade) |
534 |
chris_moore |
1.49 |
{ |
535 |
chris_moore |
1.52 |
XSetForeground (disp, WinGC, black_color); |
536 |
|
|
draw_text (disp, root, WinGC, |
537 |
|
|
win_x + effect_x_offset + SHADE_X, |
538 |
|
|
win_y + offset + SHADE_Y, line, foreground = 0); |
539 |
chris_moore |
1.49 |
} |
540 |
|
|
|
541 |
chris_moore |
1.52 |
XSetForeground (disp, WinGC, line->logfile->color); |
542 |
|
|
draw_text (disp, root, WinGC, |
543 |
|
|
win_x + effect_x_offset, |
544 |
|
|
win_y + offset, line, foreground = 1); |
545 |
chris_moore |
1.49 |
} |
546 |
chris_moore |
1.52 |
} |
547 |
pcg |
1.22 |
|
548 |
chris_moore |
1.52 |
if (opt_reverse) |
549 |
|
|
offset += step_per_line; |
550 |
|
|
offset -= line->logfile->font_ascent; |
551 |
|
|
|
552 |
|
|
miny += line->logfile->font_height; |
553 |
|
|
maxy -= line->logfile->font_height; |
554 |
chris_moore |
1.28 |
|
555 |
chris_moore |
1.52 |
space -= step_per_line; |
556 |
|
|
} |
557 |
chris_moore |
1.27 |
|
558 |
chris_moore |
1.52 |
if (space > 0 && clear) |
559 |
|
|
{ |
560 |
|
|
#ifdef DEBUG |
561 |
|
|
XSetForeground (disp, WinGC, GetColor ("orange")); |
562 |
|
|
XFillRectangle (disp, root, WinGC, win_x, win_y + offset - (opt_reverse ? 0 : space), |
563 |
|
|
width, space); |
564 |
|
|
#else /* DEBUG */ |
565 |
|
|
XClearArea (disp, root, win_x, win_y + offset - (opt_reverse ? 0 : space), |
566 |
|
|
width + MARGIN_OF_ERROR, space, False); |
567 |
|
|
#endif |
568 |
chris_moore |
1.49 |
} |
569 |
|
|
|
570 |
|
|
/* any lines that didn't just get looked at are never going to be, so break the chain */ |
571 |
|
|
if (line) line->prev->next = 0; |
572 |
|
|
|
573 |
|
|
/* and throw them all away */ |
574 |
|
|
while (line) |
575 |
|
|
{ |
576 |
|
|
struct line_node *this = line; |
577 |
|
|
line = line->next; |
578 |
|
|
if (this->logfile && this->logfile->last == this) |
579 |
|
|
this->logfile->last = NULL; |
580 |
|
|
free (this->line); |
581 |
|
|
free (this->breaks); |
582 |
|
|
free (this); |
583 |
pcg |
1.1 |
} |
584 |
|
|
|
585 |
pcg |
1.11 |
if (opt_frame) |
586 |
pcg |
1.15 |
{ |
587 |
|
|
XSetForeground (disp, WinGC, GetColor (def_color)); |
588 |
chris_moore |
1.52 |
/* note that XDrawRectangle() draws a rectangle one pixel bigger |
589 |
|
|
* in both dimensions than you ask for, hence the subtractions. |
590 |
|
|
* XFillRectangle() doesn't suffer from this problem */ |
591 |
chris_moore |
1.27 |
XDrawRectangle (disp, root, WinGC, win_x - 0, win_y - 0, width - 1, height - 1); |
592 |
pcg |
1.15 |
} |
593 |
pcg |
1.1 |
} |
594 |
|
|
|
595 |
|
|
#if HAS_REGEX |
596 |
pcg |
1.11 |
void |
597 |
|
|
transform_line (char *s) |
598 |
pcg |
1.1 |
{ |
599 |
|
|
#ifdef I_AM_Md |
600 |
pcg |
1.11 |
int i; |
601 |
|
|
if (1) |
602 |
|
|
{ |
603 |
|
|
for (i = 16; s[i]; i++) |
604 |
|
|
s[i] = s[i + 11]; |
605 |
pcg |
1.1 |
} |
606 |
pcg |
1.11 |
s[i + 1] = '\0'; |
607 |
pcg |
1.1 |
#endif |
608 |
|
|
|
609 |
pcg |
1.11 |
if (transformre) |
610 |
|
|
{ |
611 |
|
|
int i; |
612 |
|
|
regmatch_t matched[16]; |
613 |
|
|
|
614 |
chris_moore |
1.26 |
i = regexec (transformre, s, 16, matched, 0); |
615 |
pcg |
1.11 |
if (i == 0) |
616 |
|
|
{ /* matched */ |
617 |
chris_moore |
1.49 |
int match_start = matched[0].rm_so; |
618 |
|
|
int match_end = matched[0].rm_eo; |
619 |
|
|
int old_len = match_end - match_start; |
620 |
|
|
int new_len = strlen (transform_to); |
621 |
|
|
int old_whole_len = strlen (s); |
622 |
|
|
|
623 |
|
|
printf ("regexp was matched by '%s' - replace with '%s'\n", s, transform_to); |
624 |
|
|
printf ("match is from %d to %d\n", match_start, match_end); |
625 |
|
|
if (new_len > old_len) |
626 |
|
|
s = xrealloc (s, old_whole_len + new_len - old_len); |
627 |
chris_moore |
1.52 |
|
628 |
chris_moore |
1.49 |
if (new_len != old_len) |
629 |
|
|
{ |
630 |
|
|
memcpy (s + match_end + new_len - old_len, |
631 |
|
|
s + match_end, |
632 |
|
|
old_whole_len - match_end); |
633 |
pcg |
1.39 |
s[old_whole_len + new_len - old_len] = '\0'; |
634 |
|
|
} |
635 |
|
|
|
636 |
chris_moore |
1.49 |
memcpy (s + match_start, |
637 |
|
|
transform_to, |
638 |
|
|
new_len); |
639 |
|
|
printf ("transformed to '%s'\n", s); |
640 |
pcg |
1.11 |
} |
641 |
chris_moore |
1.26 |
else |
642 |
chris_moore |
1.49 |
printf ("regexp was not matched by '%s'\n", s); |
643 |
pcg |
1.1 |
} |
644 |
|
|
} |
645 |
|
|
#endif |
646 |
|
|
|
647 |
chris_moore |
1.49 |
/* |
648 |
|
|
* appends p2 to the end of p1, if p1 is not null |
649 |
|
|
* otherwise allocates a new string and copies p2 to it |
650 |
|
|
*/ |
651 |
pcg |
1.12 |
char * |
652 |
chris_moore |
1.49 |
concat_line (char *p1, const char *p2) |
653 |
pcg |
1.12 |
{ |
654 |
chris_moore |
1.49 |
assert(p2); |
655 |
|
|
|
656 |
pcg |
1.12 |
int l1 = p1 ? strlen (p1) : 0; |
657 |
|
|
int l2 = strlen (p2); |
658 |
chris_moore |
1.49 |
char *r; |
659 |
|
|
|
660 |
|
|
if (p1) |
661 |
|
|
r = xrealloc(p1, l1 + l2 + 1); |
662 |
|
|
else |
663 |
|
|
r = xmalloc (l2 + 1); |
664 |
pcg |
1.12 |
|
665 |
|
|
memcpy (r + l1, p2, l2); |
666 |
|
|
r[l1 + l2] = 0; |
667 |
|
|
|
668 |
|
|
return r; |
669 |
|
|
} |
670 |
pcg |
1.1 |
|
671 |
|
|
/* |
672 |
chris_moore |
1.41 |
* This routine can read a line of any length if it is called enough times. |
673 |
pcg |
1.1 |
*/ |
674 |
pcg |
1.11 |
int |
675 |
|
|
lineinput (struct logfile_entry *logfile) |
676 |
pcg |
1.1 |
{ |
677 |
chris_moore |
1.45 |
char buff[1024], *p; |
678 |
pcg |
1.12 |
int ch; |
679 |
chris_moore |
1.32 |
/* HACK-2: add on the length of any partial line which we will be appending to */ |
680 |
pcg |
1.12 |
int ofs = logfile->buf ? strlen (logfile->buf) : 0; |
681 |
pcg |
1.1 |
|
682 |
chris_moore |
1.45 |
/* this loop ensures that the whole line is read, even if it's |
683 |
|
|
* longer than the buffer. we need to do this because when --whole |
684 |
|
|
* is in effect we don't know whether to display the line or not |
685 |
|
|
* until we've seen how (ie. whether) it ends */ |
686 |
pcg |
1.11 |
do |
687 |
|
|
{ |
688 |
chris_moore |
1.45 |
p = buff; |
689 |
|
|
do |
690 |
chris_moore |
1.49 |
{ |
691 |
|
|
ch = fgetc (logfile->fp); |
692 |
pcg |
1.1 |
|
693 |
chris_moore |
1.49 |
if (ch == '\n' || ch == EOF) |
694 |
|
|
break; |
695 |
|
|
else if (ch == '\r') |
696 |
|
|
continue; /* skip */ |
697 |
|
|
else if (ch == '\t') |
698 |
|
|
{ |
699 |
|
|
do |
700 |
|
|
{ |
701 |
|
|
*p++ = ' '; |
702 |
|
|
ofs++; |
703 |
|
|
} |
704 |
|
|
while (ofs & 7); |
705 |
|
|
} |
706 |
|
|
else |
707 |
|
|
{ |
708 |
|
|
*p++ = ch; |
709 |
|
|
ofs++; |
710 |
|
|
} |
711 |
|
|
} |
712 |
chris_moore |
1.45 |
while (p < buff + (sizeof buff) - 8 - 1); |
713 |
pcg |
1.1 |
|
714 |
chris_moore |
1.45 |
if (p == buff && ch == EOF) |
715 |
chris_moore |
1.49 |
return 0; |
716 |
pcg |
1.12 |
|
717 |
chris_moore |
1.45 |
*p = 0; |
718 |
pcg |
1.12 |
|
719 |
chris_moore |
1.49 |
p = logfile->buf = concat_line (logfile->buf, buff); |
720 |
chris_moore |
1.45 |
} |
721 |
|
|
while (ch != '\n' && ch != EOF); |
722 |
chris_moore |
1.9 |
|
723 |
pcg |
1.12 |
logfile->lastpartial = logfile->partial; |
724 |
chris_moore |
1.25 |
/* there are 3 ways we could have exited the loop: reading '\n', |
725 |
|
|
* reaching EOF, or filling the buffer; the 2nd and 3rd of these |
726 |
|
|
* both result in a partial line */ |
727 |
|
|
logfile->partial = ch != '\n'; |
728 |
chris_moore |
1.52 |
|
729 |
pcg |
1.12 |
if (logfile->partial && opt_whole) |
730 |
pcg |
1.11 |
return 0; |
731 |
pcg |
1.1 |
|
732 |
|
|
#if HAS_REGEX |
733 |
pcg |
1.12 |
transform_line (logfile->buf); |
734 |
pcg |
1.1 |
#endif |
735 |
pcg |
1.12 |
return 1; |
736 |
pcg |
1.1 |
} |
737 |
|
|
|
738 |
|
|
/* input: reads file->fname |
739 |
|
|
* output: fills file->fp, file->inode |
740 |
|
|
* returns file->fp |
741 |
|
|
* in case of error, file->fp is NULL |
742 |
|
|
*/ |
743 |
pcg |
1.11 |
FILE * |
744 |
|
|
openlog (struct logfile_entry * file) |
745 |
|
|
{ |
746 |
|
|
struct stat stats; |
747 |
|
|
|
748 |
|
|
if ((file->fp = fopen (file->fname, "r")) == NULL) |
749 |
|
|
{ |
750 |
|
|
file->fp = NULL; |
751 |
|
|
return NULL; |
752 |
|
|
} |
753 |
|
|
|
754 |
|
|
fstat (fileno (file->fp), &stats); |
755 |
|
|
if (S_ISFIFO (stats.st_mode)) |
756 |
|
|
{ |
757 |
|
|
if (fcntl (fileno (file->fp), F_SETFL, O_NONBLOCK) < 0) |
758 |
|
|
perror ("fcntl"), exit (1); |
759 |
|
|
file->inode = 0; |
760 |
|
|
} |
761 |
|
|
else |
762 |
|
|
file->inode = stats.st_ino; |
763 |
|
|
|
764 |
|
|
if (opt_noinitial) |
765 |
|
|
fseek (file->fp, 0, SEEK_END); |
766 |
chris_moore |
1.52 |
else /* if (stats.st_size > (listlen + 1) * width) |
767 |
|
|
* HACK - 'width' is in pixels - how are we to know how much text will fit? |
768 |
|
|
* fseek (file->fp, -((listlen + 2) * width/10), SEEK_END); */ |
769 |
|
|
fseek (file->fp, -5000, SEEK_END); |
770 |
pcg |
1.11 |
|
771 |
|
|
file->last_size = stats.st_size; |
772 |
|
|
return file->fp; |
773 |
|
|
} |
774 |
|
|
|
775 |
|
|
void |
776 |
|
|
reopen (void) |
777 |
pcg |
1.1 |
{ |
778 |
pcg |
1.11 |
struct logfile_entry *e; |
779 |
|
|
|
780 |
|
|
for (e = loglist; e; e = e->next) |
781 |
|
|
{ |
782 |
|
|
if (!e->inode) |
783 |
|
|
continue; /* skip stdin */ |
784 |
pcg |
1.1 |
|
785 |
pcg |
1.11 |
if (e->fp) |
786 |
|
|
fclose (e->fp); |
787 |
|
|
/* if fp is NULL we will try again later */ |
788 |
|
|
openlog (e); |
789 |
|
|
} |
790 |
|
|
|
791 |
|
|
do_reopen = 0; |
792 |
|
|
} |
793 |
pcg |
1.1 |
|
794 |
pcg |
1.11 |
void |
795 |
|
|
check_open_files (void) |
796 |
|
|
{ |
797 |
|
|
struct logfile_entry *e; |
798 |
|
|
struct stat stats; |
799 |
pcg |
1.1 |
|
800 |
pcg |
1.11 |
for (e = loglist; e; e = e->next) |
801 |
|
|
{ |
802 |
|
|
if (!e->inode) |
803 |
|
|
continue; /* skip stdin */ |
804 |
pcg |
1.1 |
|
805 |
pcg |
1.11 |
if (stat (e->fname, &stats) < 0) |
806 |
|
|
{ /* file missing? */ |
807 |
|
|
sleep (1); |
808 |
|
|
if (e->fp) |
809 |
|
|
fclose (e->fp); |
810 |
pcg |
1.37 |
if (openlog (e) == NULL) |
811 |
|
|
continue; |
812 |
|
|
if (fstat (fileno (e->fp), &stats) < 0) |
813 |
|
|
continue; |
814 |
pcg |
1.11 |
} |
815 |
|
|
|
816 |
|
|
if (stats.st_ino != e->inode) |
817 |
|
|
{ /* file renamed? */ |
818 |
|
|
if (e->fp) |
819 |
|
|
fclose (e->fp); |
820 |
|
|
if (openlog (e) == NULL) |
821 |
chris_moore |
1.23 |
continue; |
822 |
pcg |
1.39 |
if (fstat (fileno (e->fp), &stats) < 0) |
823 |
|
|
continue; |
824 |
pcg |
1.11 |
} |
825 |
|
|
|
826 |
|
|
if (stats.st_size < e->last_size) |
827 |
|
|
{ /* file truncated? */ |
828 |
|
|
fseek (e->fp, 0, SEEK_SET); |
829 |
|
|
e->last_size = stats.st_size; |
830 |
|
|
} |
831 |
pcg |
1.1 |
} |
832 |
|
|
} |
833 |
|
|
|
834 |
pcg |
1.14 |
/* |
835 |
chris_moore |
1.49 |
* insert a single node in the list of screen lines and return a |
836 |
|
|
* pointer to the new node. |
837 |
|
|
* the caller MUST then fill in ret->line and ret->len with valid |
838 |
|
|
* data. |
839 |
pcg |
1.14 |
*/ |
840 |
chris_moore |
1.49 |
static struct line_node * |
841 |
|
|
new_line_node (struct logfile_entry *log) |
842 |
pcg |
1.12 |
{ |
843 |
chris_moore |
1.49 |
struct line_node *new = xmalloc (sizeof (struct line_node)); |
844 |
pcg |
1.12 |
|
845 |
chris_moore |
1.49 |
new->logfile = log; |
846 |
|
|
new->wrapped_left = 0; |
847 |
|
|
new->wrapped_right = 0; |
848 |
|
|
new->breaks = 0; |
849 |
pcg |
1.12 |
|
850 |
chris_moore |
1.49 |
assert(log); |
851 |
pcg |
1.12 |
|
852 |
chris_moore |
1.49 |
if (!log || !log->last) |
853 |
|
|
{ |
854 |
|
|
new->next = linelist; |
855 |
|
|
new->next->prev = new; |
856 |
pcg |
1.11 |
|
857 |
chris_moore |
1.49 |
new->prev = NULL; |
858 |
|
|
linelist = new; |
859 |
|
|
} |
860 |
|
|
else |
861 |
|
|
{ |
862 |
|
|
/* 2 pointers from the new node */ |
863 |
|
|
new->next = log->last; |
864 |
|
|
new->prev = log->last->prev; |
865 |
pcg |
1.12 |
|
866 |
chris_moore |
1.49 |
/* 2 pointers back to the new node */ |
867 |
|
|
if (new->next) new->next->prev = new; |
868 |
|
|
if (new->prev) new->prev->next = new; |
869 |
chris_moore |
1.48 |
|
870 |
chris_moore |
1.49 |
/* if this is a new first entry in the list then update |
871 |
|
|
* 'linelist' */ |
872 |
|
|
if (log->last == linelist) |
873 |
|
|
linelist = new; |
874 |
|
|
} |
875 |
pcg |
1.12 |
|
876 |
chris_moore |
1.49 |
/* update the logfile record */ |
877 |
|
|
if (log) |
878 |
|
|
log->last = new; |
879 |
pcg |
1.12 |
|
880 |
chris_moore |
1.49 |
return new; |
881 |
pcg |
1.12 |
} |
882 |
|
|
|
883 |
pcg |
1.14 |
/* |
884 |
chris_moore |
1.49 |
* this is called after either adding a new line or appending to an |
885 |
|
|
* old one. in both cases it's possible that the line no longer fits, |
886 |
|
|
* and needs wrapping. this function checks the last line associated |
887 |
|
|
* with the supplied logfile. |
888 |
pcg |
1.14 |
*/ |
889 |
pcg |
1.12 |
static void |
890 |
chris_moore |
1.49 |
possibly_split_long_line (struct logfile_entry *log) |
891 |
pcg |
1.12 |
{ |
892 |
chris_moore |
1.49 |
char *str = log->last->line; |
893 |
pcg |
1.12 |
int l = strlen (str); |
894 |
chris_moore |
1.49 |
char *p = str; |
895 |
|
|
struct line_node *line; |
896 |
|
|
int spaces; |
897 |
|
|
static struct breakinfo *breaks; |
898 |
|
|
static int break_buffer_size; |
899 |
chris_moore |
1.33 |
|
900 |
|
|
/* only calculate the continuation's width once */ |
901 |
|
|
if (continuation_width == -1) |
902 |
|
|
{ |
903 |
pcg |
1.39 |
continuation_length = strlen (continuation); |
904 |
chris_moore |
1.52 |
continuation_width = XmbTextEscapement (log->fontset, continuation, continuation_length); |
905 |
chris_moore |
1.49 |
continuation_color = GetColor (cont_color); |
906 |
|
|
|
907 |
|
|
/* make an array to store information about the location of |
908 |
|
|
* spaces in the line */ |
909 |
|
|
if (opt_justify) |
910 |
|
|
{ |
911 |
|
|
break_buffer_size = 32; |
912 |
|
|
breaks = xmalloc (break_buffer_size * sizeof (struct breakinfo)); |
913 |
|
|
} |
914 |
chris_moore |
1.33 |
} |
915 |
pcg |
1.12 |
|
916 |
|
|
do |
917 |
|
|
{ |
918 |
|
|
const char *beg = p; |
919 |
chris_moore |
1.49 |
int start_w = log->last->wrapped_left ? continuation_width : 0; |
920 |
|
|
int w = start_w; |
921 |
chris_moore |
1.33 |
int wrapped = 0; |
922 |
chris_moore |
1.49 |
char *break_p = NULL; |
923 |
chris_moore |
1.50 |
int width_at_break_p = 0; |
924 |
chris_moore |
1.49 |
spaces = 0; |
925 |
|
|
|
926 |
|
|
if (opt_justify) |
927 |
|
|
breaks[spaces].index = breaks[spaces].width = 0; |
928 |
pcg |
1.12 |
|
929 |
|
|
while (*p) |
930 |
|
|
{ |
931 |
pcg |
1.47 |
int cw, len; |
932 |
|
|
|
933 |
chris_moore |
1.49 |
/* find the length in bytes of the next multibyte character */ |
934 |
pcg |
1.47 |
len = mblen (p, l); |
935 |
pcg |
1.12 |
if (len <= 0) |
936 |
chris_moore |
1.24 |
len = 1; /* ignore (don't skip) illegal character sequences */ |
937 |
pcg |
1.12 |
|
938 |
chris_moore |
1.49 |
/* find the width in pixels of the next character */ |
939 |
chris_moore |
1.52 |
cw = XmbTextEscapement (log->fontset, p, len); |
940 |
chris_moore |
1.49 |
if (opt_wordwrap && len == 1 && p[0] == ' ' && p != break_p + 1) |
941 |
|
|
{ |
942 |
|
|
break_p = p; |
943 |
|
|
width_at_break_p = w; |
944 |
|
|
spaces++; |
945 |
|
|
|
946 |
|
|
if (opt_justify) |
947 |
|
|
{ |
948 |
|
|
/* increase the size of the 'breaks' array when |
949 |
|
|
* necessary */ |
950 |
|
|
if (spaces >= break_buffer_size) |
951 |
|
|
{ |
952 |
|
|
break_buffer_size *= 1.5; |
953 |
|
|
breaks = xrealloc (breaks, break_buffer_size * sizeof (struct breakinfo)); |
954 |
|
|
} |
955 |
|
|
|
956 |
|
|
/* store information about (a) the location of each |
957 |
|
|
* space */ |
958 |
|
|
breaks[spaces].index = p + 1 - beg; |
959 |
|
|
/* (b) the width (in pixels) of the string up to |
960 |
|
|
* this space */ |
961 |
|
|
breaks[spaces].width = cw + w - start_w; |
962 |
|
|
/* (c) the length of each 'word' */ |
963 |
|
|
breaks[spaces-1].len = breaks[spaces].index - breaks[spaces-1].index; |
964 |
|
|
} |
965 |
|
|
} |
966 |
|
|
|
967 |
chris_moore |
1.27 |
if (cw + w > width - effect_x_space) |
968 |
chris_moore |
1.49 |
{ |
969 |
|
|
if (p == beg) |
970 |
|
|
{ |
971 |
|
|
fprintf (stderr, "we can't even fit a single character onto the line\n"); |
972 |
|
|
if (len == 1) fprintf (stderr, "(the character we couldn't fit was '%c')\n", *p); |
973 |
|
|
exit (1); |
974 |
|
|
} |
975 |
chris_moore |
1.24 |
|
976 |
chris_moore |
1.49 |
wrapped = 1; |
977 |
|
|
break; |
978 |
|
|
} |
979 |
pcg |
1.12 |
|
980 |
|
|
w += cw; |
981 |
|
|
p += len; |
982 |
|
|
l -= len; |
983 |
|
|
} |
984 |
|
|
|
985 |
chris_moore |
1.24 |
/* if we're wrapping at spaces, and the line is long enough to |
986 |
|
|
* wrap, and we've seen a space already, and the space wasn't |
987 |
|
|
* the first character on the line, then wrap at the space */ |
988 |
chris_moore |
1.49 |
if (!wrapped) |
989 |
|
|
break; |
990 |
chris_moore |
1.52 |
|
991 |
chris_moore |
1.49 |
int prefix_len; |
992 |
chris_moore |
1.24 |
|
993 |
chris_moore |
1.49 |
/* choose where to break the line */ |
994 |
|
|
if (opt_wordwrap && break_p && break_p != beg) |
995 |
|
|
{ |
996 |
|
|
prefix_len = break_p - beg; |
997 |
|
|
p = break_p; |
998 |
|
|
w = width_at_break_p; |
999 |
|
|
|
1000 |
|
|
/* if breaking at a space, skip all adjacent spaces */ |
1001 |
|
|
while (*p == ' ') |
1002 |
|
|
{ |
1003 |
|
|
int len = mblen (p, l); |
1004 |
|
|
if (len != 1) break; |
1005 |
|
|
p++; |
1006 |
|
|
} |
1007 |
chris_moore |
1.24 |
|
1008 |
chris_moore |
1.49 |
if (opt_justify) |
1009 |
|
|
{ |
1010 |
|
|
spaces--; |
1011 |
|
|
breaks[spaces].len--; |
1012 |
|
|
} |
1013 |
|
|
} |
1014 |
|
|
else |
1015 |
|
|
prefix_len = p - beg; |
1016 |
chris_moore |
1.52 |
|
1017 |
chris_moore |
1.49 |
/* make a copy of the tail end of the string */ |
1018 |
|
|
p = xstrdup (p); |
1019 |
|
|
|
1020 |
|
|
/* and reduce the size of the head of the string */ |
1021 |
|
|
log->last->line = xrealloc (log->last->line, prefix_len + 1); |
1022 |
|
|
log->last->len = prefix_len; |
1023 |
|
|
log->last->line[prefix_len] = '\0'; |
1024 |
|
|
|
1025 |
|
|
/* note that the head was wrapped on it's right */ |
1026 |
|
|
log->last->wrapped_right = 1; |
1027 |
|
|
|
1028 |
|
|
/* 'spaces' includes any space we broke on; we can only justify |
1029 |
|
|
* if there's at least one other space */ |
1030 |
|
|
if (opt_justify && spaces && |
1031 |
chris_moore |
1.52 |
width - effect_x_space - width_at_break_p < spaces * log->font_height) |
1032 |
chris_moore |
1.49 |
{ |
1033 |
|
|
int i; |
1034 |
chris_moore |
1.52 |
log->last->free_pixels = width - effect_x_space - w; |
1035 |
chris_moore |
1.49 |
log->last->num_words = spaces + 1; |
1036 |
|
|
log->last->breaks = malloc (log->last->num_words * sizeof (struct breakinfo)); |
1037 |
|
|
for (i = 0; i < log->last->num_words; i++) |
1038 |
|
|
log->last->breaks[i] = breaks[i]; |
1039 |
|
|
} |
1040 |
chris_moore |
1.52 |
|
1041 |
chris_moore |
1.49 |
line = new_line_node (log); |
1042 |
|
|
line->line = p; |
1043 |
|
|
l = line->len = strlen (p); |
1044 |
chris_moore |
1.33 |
|
1045 |
chris_moore |
1.49 |
/* note that the tail end of the string is wrapped at its left */ |
1046 |
|
|
line->wrapped_left = 1; |
1047 |
pcg |
1.12 |
} |
1048 |
|
|
while (l); |
1049 |
|
|
} |
1050 |
|
|
|
1051 |
chris_moore |
1.49 |
static void |
1052 |
|
|
insert_new_line (char *str, struct logfile_entry *log) |
1053 |
|
|
{ |
1054 |
|
|
struct line_node *new; |
1055 |
|
|
new = new_line_node (log); |
1056 |
|
|
new->line = str; |
1057 |
|
|
new->len = strlen (str); |
1058 |
|
|
|
1059 |
|
|
possibly_split_long_line (log); |
1060 |
|
|
} |
1061 |
|
|
|
1062 |
pcg |
1.14 |
/* |
1063 |
|
|
* append something to an existing physical line. this is done |
1064 |
|
|
* by deleting the file on-screen, concatenating the new data to it |
1065 |
|
|
* and splitting it again. |
1066 |
|
|
*/ |
1067 |
pcg |
1.12 |
static void |
1068 |
chris_moore |
1.49 |
append_to_existing_line (char *str, struct logfile_entry *log) |
1069 |
pcg |
1.12 |
{ |
1070 |
chris_moore |
1.49 |
char *old, *new; |
1071 |
|
|
|
1072 |
|
|
assert(log); |
1073 |
|
|
assert(log->last); |
1074 |
|
|
|
1075 |
|
|
old = log->last->line; |
1076 |
|
|
assert(old); |
1077 |
|
|
|
1078 |
|
|
new = concat_line (old, str); |
1079 |
|
|
free (str); |
1080 |
|
|
log->last->line = new; |
1081 |
|
|
log->last->len = strlen (new); |
1082 |
chris_moore |
1.52 |
possibly_split_long_line (log); |
1083 |
pcg |
1.12 |
} |
1084 |
|
|
|
1085 |
|
|
static void |
1086 |
pcg |
1.11 |
main_loop (void) |
1087 |
|
|
{ |
1088 |
pcg |
1.20 |
int lin; |
1089 |
pcg |
1.11 |
time_t lastreload; |
1090 |
|
|
Region region = XCreateRegion (); |
1091 |
|
|
XEvent xev; |
1092 |
|
|
struct logfile_entry *lastprinted = NULL; |
1093 |
|
|
struct logfile_entry *current; |
1094 |
pcg |
1.18 |
int need_update = 1; |
1095 |
pcg |
1.11 |
|
1096 |
pcg |
1.47 |
display = xmalloc (sizeof (struct displaymatrix) * listlen); |
1097 |
|
|
|
1098 |
pcg |
1.11 |
lastreload = time (NULL); |
1099 |
|
|
|
1100 |
chris_moore |
1.49 |
/* Initialize line_node */ |
1101 |
pcg |
1.11 |
for (lin = 0; lin < listlen; lin++) |
1102 |
|
|
{ |
1103 |
chris_moore |
1.49 |
struct line_node *e = xmalloc (sizeof (struct line_node)); |
1104 |
|
|
e->line = xstrdup ("~"); |
1105 |
|
|
e->len = 1; |
1106 |
|
|
e->logfile = loglist; /* this is only needed to get a color for the '~' */ |
1107 |
|
|
e->wrapped_left = 0; |
1108 |
|
|
e->wrapped_right = 0; |
1109 |
|
|
e->breaks = 0; |
1110 |
|
|
e->next = NULL; |
1111 |
|
|
e->prev = linelist_tail; |
1112 |
|
|
|
1113 |
|
|
if (!linelist) |
1114 |
|
|
linelist = e; |
1115 |
|
|
if (linelist_tail) |
1116 |
|
|
linelist_tail->next = e; |
1117 |
|
|
linelist_tail = e; |
1118 |
|
|
|
1119 |
|
|
display[lin].line = xstrdup (""); |
1120 |
chris_moore |
1.28 |
display[lin].len = 0; |
1121 |
chris_moore |
1.52 |
display[lin].offset = 0; |
1122 |
pcg |
1.39 |
display[lin].buffer_size = 0; |
1123 |
pcg |
1.11 |
} |
1124 |
|
|
|
1125 |
|
|
for (;;) |
1126 |
|
|
{ |
1127 |
|
|
/* read logs */ |
1128 |
|
|
for (current = loglist; current; current = current->next) |
1129 |
|
|
{ |
1130 |
|
|
if (!current->fp) |
1131 |
|
|
continue; /* skip missing files */ |
1132 |
|
|
|
1133 |
|
|
clearerr (current->fp); |
1134 |
|
|
|
1135 |
pcg |
1.12 |
while (lineinput (current)) |
1136 |
pcg |
1.11 |
{ |
1137 |
pcg |
1.12 |
need_update = 1; |
1138 |
pcg |
1.11 |
/* if we're trying to update old partial lines in |
1139 |
|
|
* place, and the last time this file was updated the |
1140 |
|
|
* output was partial, and that partial line is not |
1141 |
|
|
* too close to the top of the screen, then update |
1142 |
|
|
* that partial line */ |
1143 |
chris_moore |
1.49 |
if (opt_update && current->lastpartial && current->last) |
1144 |
|
|
{ |
1145 |
|
|
append_to_existing_line (current->buf, current); |
1146 |
|
|
current->buf = 0; |
1147 |
|
|
continue; |
1148 |
|
|
} |
1149 |
|
|
|
1150 |
|
|
/* if all we just read was a newline ending a line that we've already displayed, skip it */ |
1151 |
|
|
if (current->buf[0] == '\0' && current->lastpartial) |
1152 |
pcg |
1.11 |
{ |
1153 |
chris_moore |
1.52 |
free(current->buf); |
1154 |
chris_moore |
1.49 |
current->buf = 0; |
1155 |
pcg |
1.12 |
continue; |
1156 |
pcg |
1.11 |
} |
1157 |
|
|
|
1158 |
|
|
/* print filename if any, and if last line was from |
1159 |
|
|
* different file */ |
1160 |
pcg |
1.13 |
if (!opt_nofilename && lastprinted != current && current->desc[0]) |
1161 |
pcg |
1.11 |
{ |
1162 |
chris_moore |
1.49 |
current->last = 0; |
1163 |
|
|
insert_new_line (xstrdup ("["), current); |
1164 |
|
|
append_to_existing_line (xstrdup (current->desc), current); |
1165 |
|
|
append_to_existing_line (xstrdup ("]"), current); |
1166 |
pcg |
1.11 |
} |
1167 |
|
|
|
1168 |
chris_moore |
1.31 |
/* if we're dealing with partial lines, and the last |
1169 |
|
|
* time we showed the line it wasn't finished ... */ |
1170 |
|
|
if (!opt_whole && current->lastpartial) |
1171 |
chris_moore |
1.49 |
{ |
1172 |
|
|
/* if this is the same file we showed last then |
1173 |
|
|
append to the last line shown */ |
1174 |
|
|
if (lastprinted == current) |
1175 |
|
|
append_to_existing_line (current->buf, current); |
1176 |
|
|
else |
1177 |
|
|
{ |
1178 |
|
|
/* but if a different file has been shown in the |
1179 |
|
|
* mean time, make a new line, starting with the |
1180 |
|
|
* continuation string */ |
1181 |
|
|
insert_new_line (current->buf, current); |
1182 |
|
|
current->last->wrapped_left = 1; |
1183 |
|
|
} |
1184 |
|
|
} |
1185 |
pcg |
1.11 |
else |
1186 |
chris_moore |
1.49 |
/* otherwise just make a plain and simple new line */ |
1187 |
|
|
insert_new_line (current->buf, current); |
1188 |
pcg |
1.11 |
|
1189 |
chris_moore |
1.49 |
current->buf = 0; |
1190 |
pcg |
1.11 |
lastprinted = current; |
1191 |
|
|
} |
1192 |
|
|
} |
1193 |
|
|
|
1194 |
|
|
if (need_update) |
1195 |
pcg |
1.18 |
{ |
1196 |
chris_moore |
1.28 |
redraw (0); |
1197 |
pcg |
1.18 |
need_update = 0; |
1198 |
|
|
} |
1199 |
pcg |
1.11 |
else |
1200 |
|
|
{ |
1201 |
|
|
XFlush (disp); |
1202 |
|
|
|
1203 |
|
|
if (!XPending (disp)) |
1204 |
|
|
{ |
1205 |
|
|
fd_set fdr; |
1206 |
|
|
struct timeval to = interval; |
1207 |
|
|
|
1208 |
|
|
FD_ZERO (&fdr); |
1209 |
|
|
FD_SET (ConnectionNumber (disp), &fdr); |
1210 |
|
|
select (ConnectionNumber (disp) + 1, &fdr, 0, 0, &to); |
1211 |
|
|
} |
1212 |
|
|
} |
1213 |
|
|
|
1214 |
|
|
check_open_files (); |
1215 |
|
|
|
1216 |
|
|
if (do_reopen) |
1217 |
|
|
reopen (); |
1218 |
|
|
|
1219 |
|
|
/* we ignore possible errors due to window resizing &c */ |
1220 |
|
|
while (XPending (disp)) |
1221 |
|
|
{ |
1222 |
|
|
XNextEvent (disp, &xev); |
1223 |
|
|
|
1224 |
|
|
switch (xev.type) |
1225 |
|
|
{ |
1226 |
|
|
case Expose: |
1227 |
|
|
{ |
1228 |
|
|
XRectangle r; |
1229 |
|
|
|
1230 |
|
|
r.x = xev.xexpose.x; |
1231 |
|
|
r.y = xev.xexpose.y; |
1232 |
|
|
r.width = xev.xexpose.width; |
1233 |
|
|
r.height = xev.xexpose.height; |
1234 |
pcg |
1.20 |
|
1235 |
pcg |
1.11 |
XUnionRectWithRegion (&r, region, region); |
1236 |
|
|
} |
1237 |
|
|
break; |
1238 |
|
|
default: |
1239 |
|
|
#ifdef DEBUGMODE |
1240 |
|
|
fprintf (stderr, "PANIC! Unknown event %d\n", xev.type); |
1241 |
|
|
#endif |
1242 |
|
|
break; |
1243 |
|
|
} |
1244 |
|
|
} |
1245 |
|
|
|
1246 |
|
|
/* reload if requested */ |
1247 |
|
|
if (reload && lastreload + reload < time (NULL)) |
1248 |
|
|
{ |
1249 |
|
|
if (command && command[0]) |
1250 |
|
|
system (command); |
1251 |
|
|
|
1252 |
|
|
reopen (); |
1253 |
|
|
lastreload = time (NULL); |
1254 |
|
|
} |
1255 |
|
|
|
1256 |
|
|
if (!XEmptyRegion (region)) |
1257 |
|
|
{ |
1258 |
pcg |
1.20 |
XRectangle r; |
1259 |
|
|
|
1260 |
pcg |
1.11 |
XSetRegion (disp, WinGC, region); |
1261 |
pcg |
1.20 |
XClipBox (region, &r); |
1262 |
|
|
|
1263 |
chris_moore |
1.28 |
refresh (r.y, r.y + r.height, 0, 1); |
1264 |
pcg |
1.11 |
|
1265 |
|
|
XDestroyRegion (region); |
1266 |
|
|
region = XCreateRegion (); |
1267 |
|
|
} |
1268 |
|
|
} |
1269 |
|
|
} |
1270 |
pcg |
1.1 |
|
1271 |
pcg |
1.11 |
|
1272 |
|
|
int |
1273 |
|
|
main (int argc, char *argv[]) |
1274 |
pcg |
1.1 |
{ |
1275 |
pcg |
1.11 |
int i; |
1276 |
|
|
int opt_daemonize = 0; |
1277 |
|
|
int opt_partial = 0, file_count = 0; |
1278 |
pcg |
1.1 |
#if HAS_REGEX |
1279 |
pcg |
1.11 |
char *transform = NULL; |
1280 |
pcg |
1.1 |
#endif |
1281 |
|
|
|
1282 |
pcg |
1.11 |
setlocale (LC_CTYPE, ""); /* try to initialize the locale. */ |
1283 |
|
|
|
1284 |
|
|
/* window needs to be initialized before colorlookups can be done */ |
1285 |
|
|
/* just a dummy to get the color lookups right */ |
1286 |
|
|
geom_mask = NoValue; |
1287 |
|
|
InitWindow (); |
1288 |
|
|
|
1289 |
|
|
for (i = 1; i < argc; i++) |
1290 |
|
|
{ |
1291 |
|
|
const char *arg = argv[i]; |
1292 |
pcg |
1.7 |
|
1293 |
pcg |
1.11 |
if (arg[0] == '-' && arg[1] != '\0' && arg[1] != ',') |
1294 |
|
|
{ |
1295 |
|
|
if (arg[1] == '-') |
1296 |
|
|
arg++; |
1297 |
|
|
|
1298 |
|
|
if (!strcmp (arg, "-?") || |
1299 |
|
|
!strcmp (arg, "-help") || !strcmp (arg, "-h")) |
1300 |
|
|
display_help (argv[0]); |
1301 |
|
|
else if (!strcmp (arg, "-V")) |
1302 |
|
|
display_version (); |
1303 |
|
|
else if (!strcmp (arg, "-g") || !strcmp (arg, "-geometry")) |
1304 |
|
|
geom_mask = |
1305 |
|
|
XParseGeometry (argv[++i], &win_x, &win_y, &width, &height); |
1306 |
|
|
else if (!strcmp (arg, "-display")) |
1307 |
|
|
dispname = argv[++i]; |
1308 |
|
|
else if (!strcmp (arg, "-cont")) |
1309 |
|
|
continuation = argv[++i]; |
1310 |
chris_moore |
1.49 |
else if (!strcmp (arg, "-cont-color")) |
1311 |
|
|
cont_color = argv[++i]; |
1312 |
pcg |
1.11 |
else if (!strcmp (arg, "-font") || !strcmp (arg, "-fn")) |
1313 |
|
|
fontname = argv[++i]; |
1314 |
pcg |
1.1 |
#if HAS_REGEX |
1315 |
pcg |
1.11 |
else if (!strcmp (arg, "-t")) |
1316 |
chris_moore |
1.49 |
{ |
1317 |
|
|
transform = argv[++i]; |
1318 |
|
|
transform_to = argv[++i]; |
1319 |
|
|
printf ("transform: '%s' to '%s'\n", transform, transform_to); |
1320 |
|
|
} |
1321 |
pcg |
1.1 |
#endif |
1322 |
pcg |
1.11 |
else if (!strcmp (arg, "-fork") || !strcmp (arg, "-f")) |
1323 |
|
|
opt_daemonize = 1; |
1324 |
|
|
else if (!strcmp (arg, "-reload")) |
1325 |
|
|
{ |
1326 |
|
|
reload = atoi (argv[++i]); |
1327 |
|
|
command = argv[++i]; |
1328 |
|
|
} |
1329 |
|
|
else if (!strcmp (arg, "-shade")) |
1330 |
|
|
opt_shade = 1; |
1331 |
pcg |
1.21 |
else if (!strcmp (arg, "-outline")) |
1332 |
|
|
opt_outline = 1; |
1333 |
pcg |
1.22 |
else if (!strcmp (arg, "-noflicker")) |
1334 |
|
|
opt_noflicker = 1; |
1335 |
pcg |
1.11 |
else if (!strcmp (arg, "-frame")) |
1336 |
|
|
opt_frame = 1; |
1337 |
|
|
else if (!strcmp (arg, "-no-filename")) |
1338 |
|
|
opt_nofilename = 1; |
1339 |
|
|
else if (!strcmp (arg, "-reverse")) |
1340 |
|
|
opt_reverse = 1; |
1341 |
|
|
else if (!strcmp (arg, "-whole")) |
1342 |
|
|
opt_whole = 1; |
1343 |
|
|
else if (!strcmp (arg, "-partial")) |
1344 |
|
|
opt_partial = 1; |
1345 |
|
|
else if (!strcmp (arg, "-update")) |
1346 |
|
|
opt_update = opt_partial = 1; |
1347 |
chris_moore |
1.24 |
else if (!strcmp (arg, "-wordwrap")) |
1348 |
|
|
opt_wordwrap = 1; |
1349 |
chris_moore |
1.49 |
else if (!strcmp (arg, "-justify")) |
1350 |
|
|
opt_justify = 1; |
1351 |
pcg |
1.11 |
else if (!strcmp (arg, "-color")) |
1352 |
|
|
def_color = argv[++i]; |
1353 |
|
|
else if (!strcmp (arg, "-noinitial")) |
1354 |
|
|
opt_noinitial = 1; |
1355 |
|
|
else if (!strcmp (arg, "-id")) |
1356 |
|
|
root = atoi (argv[++i]); |
1357 |
|
|
else if (!strcmp (arg, "-interval") || !strcmp (arg, "-i")) |
1358 |
|
|
{ |
1359 |
|
|
double iv = atof (argv[++i]); |
1360 |
|
|
|
1361 |
|
|
interval.tv_sec = (int) iv; |
1362 |
|
|
interval.tv_usec = (iv - interval.tv_sec) * 1e6; |
1363 |
|
|
} |
1364 |
|
|
else |
1365 |
|
|
{ |
1366 |
|
|
fprintf (stderr, "Unknown option '%s'.\n" |
1367 |
|
|
"Try --help for more information.\n", arg); |
1368 |
|
|
exit (1); |
1369 |
|
|
} |
1370 |
|
|
} |
1371 |
|
|
else |
1372 |
|
|
{ /* it must be a filename */ |
1373 |
|
|
struct logfile_entry *e; |
1374 |
|
|
const char *fname, *desc, *fcolor = def_color; |
1375 |
|
|
char *p; |
1376 |
|
|
|
1377 |
|
|
file_count++; |
1378 |
|
|
|
1379 |
|
|
/* this is not foolproof yet (',' in filenames are not allowed) */ |
1380 |
|
|
fname = desc = arg; |
1381 |
|
|
if ((p = strchr (arg, ','))) |
1382 |
|
|
{ |
1383 |
|
|
*p = '\0'; |
1384 |
|
|
fcolor = p + 1; |
1385 |
|
|
|
1386 |
|
|
if ((p = strchr (fcolor, ','))) |
1387 |
|
|
{ |
1388 |
|
|
*p = '\0'; |
1389 |
|
|
desc = p + 1; |
1390 |
|
|
} |
1391 |
|
|
} |
1392 |
|
|
|
1393 |
|
|
e = xmalloc (sizeof (struct logfile_entry)); |
1394 |
pcg |
1.12 |
e->partial = 0; |
1395 |
|
|
e->buf = 0; |
1396 |
|
|
|
1397 |
pcg |
1.11 |
if (arg[0] == '-' && arg[1] == '\0') |
1398 |
|
|
{ |
1399 |
|
|
if ((e->fp = fdopen (0, "r")) == NULL) |
1400 |
|
|
perror ("fdopen"), exit (1); |
1401 |
|
|
if (fcntl (0, F_SETFL, O_NONBLOCK) < 0) |
1402 |
|
|
perror ("fcntl"), exit (1); |
1403 |
pcg |
1.39 |
|
1404 |
pcg |
1.11 |
e->fname = NULL; |
1405 |
|
|
e->inode = 0; |
1406 |
|
|
e->desc = xstrdup ("stdin"); |
1407 |
|
|
} |
1408 |
|
|
else |
1409 |
|
|
{ |
1410 |
pcg |
1.39 |
e->fname = xstrdup (fname); |
1411 |
pcg |
1.11 |
|
1412 |
|
|
if (openlog (e) == NULL) |
1413 |
|
|
perror (fname), exit (1); |
1414 |
|
|
|
1415 |
pcg |
1.38 |
e->desc = xstrdup (desc); |
1416 |
pcg |
1.11 |
} |
1417 |
|
|
|
1418 |
|
|
e->color = GetColor (fcolor); |
1419 |
|
|
e->partial = 0; |
1420 |
chris_moore |
1.52 |
e->fontname = fontname; |
1421 |
chris_moore |
1.49 |
e->last = NULL; |
1422 |
pcg |
1.11 |
e->next = NULL; |
1423 |
|
|
|
1424 |
|
|
if (!loglist) |
1425 |
|
|
loglist = e; |
1426 |
|
|
if (loglist_tail) |
1427 |
|
|
loglist_tail->next = e; |
1428 |
pcg |
1.39 |
|
1429 |
pcg |
1.11 |
loglist_tail = e; |
1430 |
|
|
} |
1431 |
|
|
} |
1432 |
|
|
|
1433 |
|
|
if (!loglist) |
1434 |
|
|
{ |
1435 |
|
|
fprintf (stderr, "You did not specify any files to tail\n" |
1436 |
|
|
"use %s --help for help\n", argv[0]); |
1437 |
|
|
exit (1); |
1438 |
|
|
} |
1439 |
|
|
|
1440 |
chris_moore |
1.43 |
if (opt_update && opt_whole) |
1441 |
|
|
{ |
1442 |
|
|
fprintf (stderr, "Specify at most one of -update and -whole\n"); |
1443 |
|
|
exit (1); |
1444 |
|
|
} |
1445 |
|
|
else if (opt_partial && opt_whole) |
1446 |
pcg |
1.11 |
{ |
1447 |
|
|
fprintf (stderr, "Specify at most one of -partial and -whole\n"); |
1448 |
|
|
exit (1); |
1449 |
chris_moore |
1.9 |
} |
1450 |
|
|
|
1451 |
chris_moore |
1.49 |
/* it doesn't make sense to justify if word wrap isn't on */ |
1452 |
|
|
if (opt_justify) |
1453 |
|
|
opt_wordwrap = 1; |
1454 |
|
|
|
1455 |
chris_moore |
1.32 |
/* HACK-7: do we want to allow both -shade and -outline? */ |
1456 |
chris_moore |
1.27 |
if (opt_shade && opt_outline) |
1457 |
|
|
{ |
1458 |
|
|
fprintf (stderr, "Specify at most one of -shade and -outline\n"); |
1459 |
|
|
exit (1); |
1460 |
|
|
} |
1461 |
|
|
|
1462 |
pcg |
1.11 |
if (opt_partial) |
1463 |
chris_moore |
1.9 |
/* if we specifically requested to see partial lines then don't insist on whole lines */ |
1464 |
pcg |
1.11 |
opt_whole = 0; |
1465 |
|
|
else if (file_count > 1) |
1466 |
chris_moore |
1.31 |
/* otherwise, if we're viewing multiple files, default to showing whole lines */ |
1467 |
pcg |
1.11 |
opt_whole = 1; |
1468 |
chris_moore |
1.9 |
|
1469 |
pcg |
1.1 |
#if HAS_REGEX |
1470 |
pcg |
1.11 |
if (transform) |
1471 |
|
|
{ |
1472 |
|
|
int i; |
1473 |
pcg |
1.1 |
|
1474 |
chris_moore |
1.49 |
printf ("compiling regexp '%s'\n", transform); |
1475 |
chris_moore |
1.26 |
transformre = xmalloc (sizeof (regex_t)); |
1476 |
|
|
i = regcomp (transformre, transform, REG_EXTENDED); |
1477 |
pcg |
1.11 |
if (i != 0) |
1478 |
|
|
{ |
1479 |
|
|
char buf[512]; |
1480 |
|
|
|
1481 |
chris_moore |
1.26 |
regerror (i, transformre, buf, sizeof (buf)); |
1482 |
pcg |
1.11 |
fprintf (stderr, "Cannot compile regular expression: %s\n", buf); |
1483 |
|
|
} |
1484 |
chris_moore |
1.26 |
else |
1485 |
chris_moore |
1.49 |
printf ("compiled '%s' OK to %x\n", transform, (int)transformre); |
1486 |
pcg |
1.1 |
} |
1487 |
|
|
#endif |
1488 |
|
|
|
1489 |
pcg |
1.11 |
InitWindow (); |
1490 |
pcg |
1.1 |
|
1491 |
pcg |
1.11 |
install_signal (SIGINT, blank_window); |
1492 |
|
|
install_signal (SIGQUIT, blank_window); |
1493 |
|
|
install_signal (SIGTERM, blank_window); |
1494 |
|
|
install_signal (SIGHUP, force_reopen); |
1495 |
|
|
install_signal (SIGUSR1, list_files); |
1496 |
|
|
install_signal (SIGUSR2, force_refresh); |
1497 |
pcg |
1.1 |
|
1498 |
pcg |
1.11 |
if (opt_daemonize) |
1499 |
|
|
daemonize (); |
1500 |
pcg |
1.1 |
|
1501 |
pcg |
1.11 |
main_loop (); |
1502 |
pcg |
1.1 |
|
1503 |
pcg |
1.11 |
exit (1); /* to make gcc -Wall stop complaining */ |
1504 |
pcg |
1.1 |
} |
1505 |
|
|
|
1506 |
pcg |
1.11 |
void |
1507 |
|
|
install_signal (int sig, void (*handler) (int)) |
1508 |
pcg |
1.1 |
{ |
1509 |
pcg |
1.11 |
struct sigaction action; |
1510 |
|
|
|
1511 |
|
|
action.sa_handler = handler; |
1512 |
|
|
sigemptyset (&action.sa_mask); |
1513 |
|
|
action.sa_flags = SA_RESTART; |
1514 |
pcg |
1.1 |
|
1515 |
pcg |
1.11 |
if (sigaction (sig, &action, NULL) < 0) |
1516 |
chris_moore |
1.49 |
fprintf (stderr, "sigaction (%d): %s\n", sig, strerror (errno)), exit (1); |
1517 |
pcg |
1.1 |
} |
1518 |
|
|
|
1519 |
pcg |
1.11 |
void * |
1520 |
|
|
xstrdup (const char *string) |
1521 |
pcg |
1.1 |
{ |
1522 |
pcg |
1.11 |
void *p; |
1523 |
pcg |
1.1 |
|
1524 |
pcg |
1.11 |
while ((p = strdup (string)) == NULL) |
1525 |
|
|
{ |
1526 |
chris_moore |
1.49 |
fprintf (stderr, "Memory exhausted in xstrdup ().\n"); |
1527 |
pcg |
1.11 |
sleep (10); |
1528 |
pcg |
1.1 |
} |
1529 |
pcg |
1.11 |
|
1530 |
|
|
return p; |
1531 |
pcg |
1.1 |
} |
1532 |
|
|
|
1533 |
pcg |
1.11 |
void * |
1534 |
|
|
xmalloc (size_t size) |
1535 |
pcg |
1.1 |
{ |
1536 |
pcg |
1.11 |
void *p; |
1537 |
pcg |
1.1 |
|
1538 |
pcg |
1.11 |
while ((p = malloc (size)) == NULL) |
1539 |
|
|
{ |
1540 |
chris_moore |
1.49 |
fprintf (stderr, "Memory exhausted in xmalloc ().\n"); |
1541 |
pcg |
1.11 |
sleep (10); |
1542 |
pcg |
1.1 |
} |
1543 |
pcg |
1.12 |
|
1544 |
pcg |
1.11 |
return p; |
1545 |
pcg |
1.1 |
} |
1546 |
|
|
|
1547 |
chris_moore |
1.28 |
void * |
1548 |
|
|
xrealloc (void *ptr, size_t size) |
1549 |
|
|
{ |
1550 |
|
|
void *p; |
1551 |
|
|
|
1552 |
|
|
while ((p = realloc (ptr, size)) == NULL) |
1553 |
|
|
{ |
1554 |
chris_moore |
1.49 |
fprintf (stderr, "Memory exhausted in xrealloc ().\n"); |
1555 |
chris_moore |
1.28 |
sleep (10); |
1556 |
|
|
} |
1557 |
|
|
|
1558 |
|
|
return p; |
1559 |
|
|
} |
1560 |
|
|
|
1561 |
pcg |
1.11 |
void |
1562 |
|
|
display_help (char *myname) |
1563 |
|
|
{ |
1564 |
chris_moore |
1.52 |
printf ("Usage: %s [options] file1[,color[,desc]]" |
1565 |
|
|
"[options] [file2[,color[,desc]] ...]\n", myname); |
1566 |
pcg |
1.11 |
printf (" -g | -geometry geometry -g WIDTHxHEIGHT+X+Y\n" |
1567 |
|
|
" -color color use color $color as default\n" |
1568 |
|
|
" -reload sec command reload after $sec and run command\n" |
1569 |
|
|
" -id id window id to use instead of the root window\n" |
1570 |
|
|
" -font FONTSPEC (-fn) font to use\n" |
1571 |
|
|
" -f | -fork fork into background\n" |
1572 |
|
|
" -reverse print new lines at the top\n" |
1573 |
|
|
" -whole wait for \\n before showing a line\n" |
1574 |
|
|
" -partial show lines even if they don't end with a \\n\n" |
1575 |
|
|
" -update allow updates to old partial lines\n" |
1576 |
|
|
" -cont string to prefix continued partial lines with\n" |
1577 |
chris_moore |
1.24 |
" -wordwrap wrap long lines at spaces to avoid breaking words\n" |
1578 |
pcg |
1.11 |
" defaults to \"[+]\"\n" |
1579 |
|
|
" -shade add shading to font\n" |
1580 |
|
|
" -noinitial don't display the last file lines on\n" |
1581 |
|
|
" startup\n" |
1582 |
|
|
" -i | -interval seconds interval between checks (fractional\n" |
1583 |
pcg |
1.21 |
" values o.k.). Default 2.4 seconds\n" |
1584 |
pcg |
1.11 |
" -V display version information and exit\n" |
1585 |
|
|
"\n"); |
1586 |
chris_moore |
1.46 |
printf ("Example:\n%s -g 800x250+100+50 -font fixed /var/log/messages,green " |
1587 |
pcg |
1.11 |
"/var/log/secure,red,'ALERT'\n", myname); |
1588 |
|
|
exit (0); |
1589 |
|
|
} |
1590 |
|
|
|
1591 |
|
|
void |
1592 |
|
|
display_version (void) |
1593 |
pcg |
1.1 |
{ |
1594 |
pcg |
1.11 |
printf ("root-tail version " VERSION "\n"); |
1595 |
|
|
exit (0); |
1596 |
pcg |
1.1 |
} |
1597 |
|
|
|
1598 |
pcg |
1.11 |
int |
1599 |
|
|
daemonize (void) |
1600 |
|
|
{ |
1601 |
chris_moore |
1.26 |
pid_t pid; |
1602 |
|
|
|
1603 |
|
|
switch (pid = fork ()) |
1604 |
pcg |
1.11 |
{ |
1605 |
pcg |
1.1 |
case -1: |
1606 |
pcg |
1.11 |
return -1; |
1607 |
pcg |
1.1 |
case 0: |
1608 |
pcg |
1.11 |
break; |
1609 |
pcg |
1.1 |
default: |
1610 |
chris_moore |
1.49 |
/*printf ("%d\n", pid);*/ |
1611 |
chris_moore |
1.26 |
exit (0); |
1612 |
pcg |
1.1 |
} |
1613 |
|
|
|
1614 |
pcg |
1.11 |
if (setsid () == -1) |
1615 |
|
|
return -1; |
1616 |
pcg |
1.1 |
|
1617 |
pcg |
1.11 |
return 0; |
1618 |
pcg |
1.1 |
} |
1619 |
chris_moore |
1.49 |
|
1620 |
|
|
/* todo - get reverse display working again */ |