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comparison sw/sniff-dec/main.c @ 41:118a12e9483b

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simtrace3-sniff-dec started
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 31 Aug 2023 08:46:23 +0000
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40:510bef2b2000 41:118a12e9483b
1 /*
2 * simtrace3-sniff-dec main module: reading the log file.
3 */
4
5 #include <ctype.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <strings.h>
10
11 char *log_filename;
12 char linebuf[128];
13 int lineno;
14 unsigned fpga_word;
15
16 static void
17 process_line()
18 {
19 char *cp;
20
21 cp = index(linebuf, '\n');
22 if (!cp) {
23 fprintf(stderr, "%s line %d: too long or missing newline\n",
24 log_filename, lineno);
25 exit(1);
26 }
27 if (linebuf[0] != '[')
28 return;
29 cp = linebuf + 1;
30 while (isdigit(*cp) || *cp == ':' || *cp == '.')
31 cp++;
32 if (*cp++ != ']') {
33 invalid: fprintf(stderr, "%s line %d: failed to parse\n",
34 log_filename, lineno);
35 exit(1);
36 }
37 if (!isspace(*cp))
38 goto invalid;
39 *cp++ = '\0';
40 if (strlen(linebuf) > 17)
41 goto invalid;
42 while (isspace(*cp))
43 cp++;
44 if (!isxdigit(cp[0]) || !isxdigit(cp[1]) || !isxdigit(cp[2]) ||
45 !isxdigit(cp[3]) || !isspace(cp[4]))
46 goto invalid;
47 fpga_word = strtoul(cp, 0, 16);
48 process_fpga_word();
49 }
50
51 main(argc, argv)
52 char **argv;
53 {
54 FILE *inf;
55
56 if (argc != 2) {
57 fprintf(stderr, "usage: %s logfile\n", argv[0]);
58 exit(1);
59 }
60 log_filename = argv[1];
61 inf = fopen(log_filename, "r");
62 if (!inf) {
63 perror(log_filename);
64 exit(1);
65 }
66 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++)
67 process_line();
68 exit(0);
69 }