FreeCalypso > hg > themwi-system-sw

annotate libutil/numstring.c @ 240:c7a3ba56c636

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
themwi-short-dial: fix bug in printf arguments
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 14 Aug 2023 15:37:59 -0800
parents d712d518059e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * Utility functions for number string initial parsing or preening.
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * grok_number_string() checks whether or not a user-supplied string
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * argument is fully numeric (with possibility of allowing hyphens),
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * and returns the number of digits. dehyphen_number_string() copies
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * a possibly-hyphenated number string to a new buffer with all hyphens
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 * taken out.
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 */
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <ctype.h>
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 grok_number_string(str, allow_hyphen)
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 char *str;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 {
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 char *cp;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 int c, n, last_hyphen;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 n = 0;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 last_hyphen = 0;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 for (cp = str; *cp; ) {
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 c = *cp++;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 if (isdigit(c)) {
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 n++;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 last_hyphen = 0;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 } else if (c == '-') {
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 if (!allow_hyphen || !n || last_hyphen)
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 return(-1);
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 last_hyphen = 1;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 } else
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 return(-1);
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 }
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 if (last_hyphen)
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 return(-1);
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 return n;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 }
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 dehyphen_number_string(src, dest)
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 char *src, *dest;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 {
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 char *cp, *dp;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 int c;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 dp = dest;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 for (cp = src; *cp; ) {
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 c = *cp++;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 if (isdigit(c))
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 *dp++ = c;
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 }
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 *dp = '\0';
d712d518059e libutil: add functions for number string parsing/preening
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 }