FreeCalypso > hg > freecalypso-tools

annotate target-utils/simagent/stringarg.c @ 777:0cffc53991f9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
simagent: bugfix in hex string arg parsing function
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 12 Mar 2021 23:58:15 +0000
parents fac3176de18d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
776
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module contains the function that parses our hex string arguments.
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <ctype.h>
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include "types.h"
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 static
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 decode_hex_digit(c)
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 {
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 if (isdigit(c))
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 return c - '0';
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 else if (islower(c))
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 return c - 'a' + 10;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 else
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 return c - 'A' + 10;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 }
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 decode_hex_string_arg(arg, buf, maxlen)
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 char *arg;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 u8 *buf;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 unsigned maxlen;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 {
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 unsigned count;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 for (count = 0; ; ) {
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 while (isspace(*arg))
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 arg++;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 if (!*arg)
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 break;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 if (!isxdigit(arg[0]) || !isxdigit(arg[1])) {
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 printf("ERROR: invalid hex string input\n");
777
0cffc53991f9 simagent: bugfix in hex string arg parsing function
Mychaela Falconia <falcon@freecalypso.org>
parents: 776
diff changeset
33 return(-1);
776
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 }
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 if (count >= maxlen) {
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 printf("ERROR: hex string input is too long\n");
777
0cffc53991f9 simagent: bugfix in hex string arg parsing function
Mychaela Falconia <falcon@freecalypso.org>
parents: 776
diff changeset
37 return(-1);
776
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 }
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 buf[count++] = (decode_hex_digit(arg[0]) << 4) |
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 decode_hex_digit(arg[1]);
777
0cffc53991f9 simagent: bugfix in hex string arg parsing function
Mychaela Falconia <falcon@freecalypso.org>
parents: 776
diff changeset
41 arg += 2;
776
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 }
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 return count;
fac3176de18d simagent: bare Tx implemented
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 }