1 |
greg |
2.1 |
#ifndef lint |
2 |
schorsch |
2.5 |
static const char RCSid[] = "$Id: fgetval.c,v 2.4 2003/02/25 02:47:21 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
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/* |
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* Read white space separated values from stream |
6 |
greg |
2.3 |
* |
7 |
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* External symbols declared in standard.h |
8 |
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*/ |
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10 |
greg |
2.4 |
#include "copyright.h" |
11 |
greg |
2.1 |
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12 |
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#include <stdio.h> |
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#include <math.h> |
14 |
greg |
2.3 |
#include <stdlib.h> |
15 |
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#include <string.h> |
16 |
greg |
2.1 |
#include <ctype.h> |
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18 |
schorsch |
2.5 |
#include "standard.h" |
19 |
greg |
2.1 |
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20 |
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int |
21 |
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fgetval(fp, ty, vp) /* get specified data word */ |
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register FILE *fp; |
23 |
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int ty; |
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char *vp; |
25 |
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{ |
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char wrd[64]; |
27 |
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register char *cp; |
28 |
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register int c; |
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/* elide comments (# to EOL) */ |
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do { |
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while ((c = getc(fp)) != EOF && isspace(c)) |
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; |
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if (c == '#') |
34 |
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while ((c = getc(fp)) != EOF && c != '\n') |
35 |
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; |
36 |
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} while (c == '\n'); |
37 |
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if (c == EOF) |
38 |
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return(EOF); |
39 |
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/* get word */ |
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cp = wrd; |
41 |
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do { |
42 |
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*cp++ = c; |
43 |
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if (cp - wrd >= sizeof(wrd)) |
44 |
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return(0); |
45 |
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} while ((c = getc(fp)) != EOF && !isspace(c) && c != '#'); |
46 |
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if (c != EOF) |
47 |
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ungetc(c, fp); |
48 |
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*cp = '\0'; |
49 |
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switch (ty) { /* check and convert it */ |
50 |
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case 'h': /* short */ |
51 |
greg |
2.2 |
if (!isint(wrd)) |
52 |
greg |
2.1 |
return(0); |
53 |
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*(short *)vp = c = atoi(wrd); |
54 |
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if (*(short *)vp != c) |
55 |
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return(0); |
56 |
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return(1); |
57 |
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case 'i': /* integer */ |
58 |
greg |
2.2 |
if (!isint(wrd)) |
59 |
greg |
2.1 |
return(0); |
60 |
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*(int *)vp = atoi(wrd); |
61 |
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return(1); |
62 |
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case 'l': /* long */ |
63 |
greg |
2.2 |
if (!isint(wrd)) |
64 |
greg |
2.1 |
return(0); |
65 |
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*(long *)vp = atol(wrd); |
66 |
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return(1); |
67 |
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case 'f': /* float */ |
68 |
greg |
2.2 |
if (!isflt(wrd)) |
69 |
greg |
2.1 |
return(0); |
70 |
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*(float *)vp = atof(wrd); |
71 |
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return(1); |
72 |
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case 'd': /* double */ |
73 |
greg |
2.2 |
if (!isflt(wrd)) |
74 |
greg |
2.1 |
return(0); |
75 |
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*(double *)vp = atof(wrd); |
76 |
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return(1); |
77 |
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case 's': /* string */ |
78 |
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strcpy(vp, wrd); |
79 |
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return(1); |
80 |
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default: /* unsupported type */ |
81 |
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return(0); |
82 |
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} |
83 |
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} |