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Whitespace fixes. Indented the code following Linux styleguide to fix
[sojka/can-utils.git] / log2asc.c
1 /*
2  *  $Id$
3  */
4
5 /*
6  * log2asc.c - convert compact CAN frame logfile to ASC logfile
7  *
8  * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of Volkswagen nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * Alternatively, provided that this notice is retained in full, this
24  * software may be distributed under the terms of the GNU General
25  * Public License ("GPL") version 2, in which case the provisions of the
26  * GPL apply INSTEAD OF those given above.
27  *
28  * The provided data structures and external interfaces from this code
29  * are not restricted to be used by modules with a GPL compatible license.
30  *
31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
37  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
39  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
41  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
42  * DAMAGE.
43  *
44  * Send feedback to <socketcan-users@lists.berlios.de>
45  *
46  */
47
48 #include <stdio.h>
49 #include <string.h>
50 #include <time.h>
51 #include <libgen.h>
52 #include <unistd.h>
53
54 #include <net/if.h>
55 #include <linux/can.h>
56
57 #include "lib.h"
58
59 extern int optind, opterr, optopt;
60
61 void print_usage(char *prg)
62 {
63         fprintf(stderr, "Usage: %s [can-interfaces]\n", prg);
64         fprintf(stderr, "Options: -I <infile>  (default stdin)\n");
65         fprintf(stderr, "         -O <outfile> (default stdout)\n");
66         fprintf(stderr, "         -4 (reduce decimal place to 4 digits)\n");
67         fprintf(stderr, "         -n (set newline to cr/lf - default lf)\n");
68 }
69
70 int main(int argc, char **argv)
71 {
72         char buf[100], device[100], ascframe[100], id[10];
73
74         struct can_frame cf;
75         static struct timeval tv, start_tv;
76         FILE *infile = stdin;
77         FILE *outfile = stdout;
78         static int maxdev, devno, i, crlf, d4, opt;
79
80         while ((opt = getopt(argc, argv, "I:O:4n")) != -1) {
81                 switch (opt) {
82                 case 'I':
83                         infile = fopen(optarg, "r");
84                         if (!infile) {
85                                 perror("infile");
86                                 return 1;
87                         }
88                         break;
89
90                 case 'O':
91                         outfile = fopen(optarg, "w");
92                         if (!outfile) {
93                                 perror("outfile");
94                                 return 1;
95                         }
96                         break;
97
98                 case 'n':
99                         crlf = 1;
100                         break;
101
102                 case '4':
103                         d4 = 1;
104                         break;
105
106                 default:
107                         fprintf(stderr, "Unknown option %c\n", opt);
108                         print_usage(basename(argv[0]));
109                         return 1;
110                         break;
111                 }
112         }
113
114         maxdev = argc - optind; /* find real number of CAN devices */
115
116         if (!maxdev) {
117                 fprintf(stderr, "no CAN interfaces defined!\n");
118                 print_usage(basename(argv[0]));
119                 return 1;
120         }
121         
122         //printf("Found %d CAN devices!\n", maxdev);
123
124         while (fgets(buf, 99, infile)) {
125                 if (sscanf(buf, "(%ld.%ld) %s %s", &tv.tv_sec, &tv.tv_usec,
126                            device, ascframe) != 4)
127                         return 1;
128
129                 if (!start_tv.tv_sec) { /* print banner */
130                         start_tv = tv;
131                         fprintf(outfile, "date %s", ctime(&start_tv.tv_sec));
132                         fprintf(outfile, "base hex  timestamps absolute%s",
133                                 (crlf)?"\r\n":"\n");
134                         fprintf(outfile, "no internal events logged%s",
135                                 (crlf)?"\r\n":"\n");
136                 }
137
138                 for (i=0, devno=0; i<maxdev; i++) {
139                         if (!strcmp(device, argv[optind+i])) {
140                                 devno = i+1; /* start with channel '1' */
141                                 break;
142                         }
143                 }
144
145                 if (devno) { /* only convert for selected CAN devices */
146                         if (parse_canframe(ascframe, &cf))
147                                 return 1;
148
149                         tv.tv_sec  = tv.tv_sec - start_tv.tv_sec;
150                         tv.tv_usec = tv.tv_usec - start_tv.tv_usec;
151                         if (tv.tv_usec < 0)
152                                 tv.tv_sec--, tv.tv_usec += 1000000;
153                         if (tv.tv_sec < 0)
154                                 tv.tv_sec = tv.tv_usec = 0;
155
156                         if (d4)
157                                 fprintf(outfile, "%4ld.%04ld ", tv.tv_sec, tv.tv_usec/100);
158                         else
159                                 fprintf(outfile, "%4ld.%06ld ", tv.tv_sec, tv.tv_usec);
160
161                         fprintf(outfile, "%-2d ", devno); /* channel number left aligned */
162
163                         if (cf.can_id & CAN_ERR_FLAG)
164                                 fprintf(outfile, "ErrorFrame");
165                         else {
166                                 sprintf(id, "%X%c", cf.can_id & CAN_EFF_MASK,
167                                         (cf.can_id & CAN_EFF_FLAG)?'x':' ');
168                                 fprintf(outfile, "%-15s Rx   ", id);
169                 
170                                 if (cf.can_id & CAN_RTR_FLAG)
171                                         fprintf(outfile, "r"); /* RTR frame */
172                                 else {
173                                         fprintf(outfile, "d %d", cf.can_dlc); /* data frame */
174                     
175                                         for (i = 0; i < cf.can_dlc; i++) {
176                                                 fprintf(outfile, " %02X", cf.data[i]);
177                                         }
178                                 }
179                         }
180                         if (crlf)
181                                 fprintf(outfile, "\r");
182                         fprintf(outfile, "\n");
183                 }
184         }
185         fflush(outfile);
186
187         return 0;
188 }