Last change
on this file since 6888aa2 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 7 years ago |
Imported original source code.
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Property mode
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100755
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File size:
1.1 KB
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Rev | Line | |
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[3ae31e9] | 1 | /*
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| 2 | =============================================================================
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| 3 | getint.c -- convert a string to a 16 bit integer
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| 4 | Version 2 -- 1988-09-21 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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| 8 | #include "ctype.h"
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| 9 | #include "stddefs.h"
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| 10 |
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| 11 | extern long atol();
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| 12 |
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| 13 | /*
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| 14 | =============================================================================
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| 15 | get_int(str, ap) -- convert 'str' to a 16 bit integer at 'ap'
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| 16 | =============================================================================
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| 17 | */
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| 18 |
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| 19 | int
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| 20 | get_int(str, ap)
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| 21 | register char *str;
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| 22 | int *ap;
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| 23 | {
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| 24 | register int i, sign, c;
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| 25 | long arg;
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| 26 | char *s;
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| 27 |
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| 28 | s = str;
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| 29 |
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| 30 | while (*str EQ ' ')
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| 31 | ++str;
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| 32 |
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| 33 | while ('\0' NE (c = 0x00FF & *str++)) {
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| 34 |
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| 35 | if (c EQ '+') {
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| 36 |
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| 37 | if (++sign > 1)
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| 38 | return(FAILURE);
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| 39 |
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| 40 | } else if (c EQ '-') {
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| 41 |
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| 42 | if (++sign > 1)
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| 43 | return(FAILURE);
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| 44 |
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| 45 | } else {
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| 46 |
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| 47 | if (NOT isascii(c))
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| 48 | return(FAILURE);
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| 49 |
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| 50 | if (NOT isdigit(c))
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| 51 | return(FAILURE);
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| 52 | }
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| 53 | }
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| 54 |
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| 55 | if ((arg = atol(s)) > 65535L)
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| 56 | return(FAILURE);
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| 57 |
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| 58 | *ap = arg;
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| 59 |
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| 60 | return(SUCCESS);
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| 61 | }
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