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comparison libcommon/be_init.c @ 9:c9ef9e91dd8e

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new libcommon, initial version
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 14 Mar 2021 06:55:38 +0000
parents
children e2ef4b8e4136
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8:34bbb0585cab 9:c9ef9e91dd8e
1 /*
2 * This module is responsible for collecting the initial info
3 * strings emitted by the back end.
4 */
5
6 #include <ctype.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <strings.h>
11
12 extern FILE *rpipeF;
13
14 #define MAX_INIT_STRING 254
15
16 char be_reader_name[MAX_INIT_STRING+1];
17 char be_atr_string[MAX_INIT_STRING+1];
18
19 static void
20 copy_without_leading_space(input_str, dest)
21 char *input_str, *dest;
22 {
23 char *cp;
24
25 for (cp = input_str; isspace(*cp); cp++)
26 ;
27 strcpy(dest, cp);
28 }
29
30 collect_backend_init_strings()
31 {
32 char inbuf[MAX_INIT_STRING+2], *cp;
33
34 for (;;) {
35 if (!fgets(inbuf, sizeof inbuf, rpipeF)) {
36 fprintf(stderr,
37 "start-up error: EOF reading init strings from back end\n");
38 exit(1);
39 }
40 cp = index(inbuf, '\n');
41 if (!cp) {
42 fprintf(stderr,
43 "start-up error: init string from back end has no newline\n");
44 exit(1);
45 }
46 *cp = '\0';
47 if (!inbuf[0])
48 break;
49 switch (inbuf[0]) {
50 case 'A':
51 copy_without_leading_space(inbuf + 1, be_atr_string);
52 break;
53 case 'R':
54 copy_without_leading_space(inbuf + 1, be_reader_name);
55 break;
56 }
57 }
58 return(0);
59 }