| 1 |
/* Copyright (c) 1994 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Routines for recognizing and moving about words in strings. |
| 9 |
*/ |
| 10 |
|
| 11 |
#include <ctype.h> |
| 12 |
|
| 13 |
#ifdef BSD |
| 14 |
#define strchr index |
| 15 |
#endif |
| 16 |
|
| 17 |
#define NULL 0 |
| 18 |
|
| 19 |
extern char *strchr(); |
| 20 |
|
| 21 |
|
| 22 |
char * |
| 23 |
iskip(s) /* skip integer in string */ |
| 24 |
register char *s; |
| 25 |
{ |
| 26 |
while (isspace(*s)) |
| 27 |
s++; |
| 28 |
if (*s == '-' || *s == '+') |
| 29 |
s++; |
| 30 |
if (!isdigit(*s)) |
| 31 |
return(NULL); |
| 32 |
do |
| 33 |
s++; |
| 34 |
while (isdigit(*s)); |
| 35 |
return(s); |
| 36 |
} |
| 37 |
|
| 38 |
|
| 39 |
char * |
| 40 |
fskip(s) /* skip float in string */ |
| 41 |
register char *s; |
| 42 |
{ |
| 43 |
register char *cp; |
| 44 |
|
| 45 |
while (isspace(*s)) |
| 46 |
s++; |
| 47 |
if (*s == '-' || *s == '+') |
| 48 |
s++; |
| 49 |
cp = s; |
| 50 |
while (isdigit(*cp)) |
| 51 |
cp++; |
| 52 |
if (*cp == '.') { |
| 53 |
cp++; s++; |
| 54 |
while (isdigit(*cp)) |
| 55 |
cp++; |
| 56 |
} |
| 57 |
if (cp == s) |
| 58 |
return(NULL); |
| 59 |
if (*cp == 'e' || *cp == 'E') |
| 60 |
return(iskip(cp+1)); |
| 61 |
return(cp); |
| 62 |
} |
| 63 |
|
| 64 |
|
| 65 |
int |
| 66 |
isint(s) /* check integer format */ |
| 67 |
char *s; |
| 68 |
{ |
| 69 |
register char *cp; |
| 70 |
|
| 71 |
cp = iskip(s); |
| 72 |
return(cp != NULL && *cp == '\0'); |
| 73 |
} |
| 74 |
|
| 75 |
|
| 76 |
int |
| 77 |
isintd(s, ds) /* check integer format with delimiter set */ |
| 78 |
char *s, *ds; |
| 79 |
{ |
| 80 |
register char *cp; |
| 81 |
|
| 82 |
cp = iskip(s); |
| 83 |
return(cp != NULL && strchr(ds, *cp) != NULL); |
| 84 |
} |
| 85 |
|
| 86 |
|
| 87 |
int |
| 88 |
isflt(s) /* check float format */ |
| 89 |
char *s; |
| 90 |
{ |
| 91 |
register char *cp; |
| 92 |
|
| 93 |
cp = fskip(s); |
| 94 |
return(cp != NULL && *cp == '\0'); |
| 95 |
} |
| 96 |
|
| 97 |
|
| 98 |
int |
| 99 |
isfltd(s, ds) /* check integer format with delimiter set */ |
| 100 |
char *s, *ds; |
| 101 |
{ |
| 102 |
register char *cp; |
| 103 |
|
| 104 |
cp = fskip(s); |
| 105 |
return(cp != NULL && strchr(ds, *cp) != NULL); |
| 106 |
} |
