| 1 |
greg |
2.1 |
#ifndef lint |
| 2 |
greg |
2.9 |
static const char RCSid[] = "$Id: fgetval.c,v 2.8 2004/03/28 20:33:12 schorsch Exp $"; |
| 3 |
greg |
2.1 |
#endif |
| 4 |
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/* |
| 5 |
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* Read white space separated values from stream |
| 6 |
greg |
2.3 |
* |
| 7 |
greg |
2.6 |
* External symbols declared in rtio.h |
| 8 |
greg |
2.3 |
*/ |
| 9 |
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| 10 |
greg |
2.6 |
#include "rtio.h" |
| 11 |
greg |
2.1 |
|
| 12 |
greg |
2.7 |
#include <stdlib.h> |
| 13 |
greg |
2.1 |
#include <ctype.h> |
| 14 |
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| 15 |
|
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int |
| 16 |
greg |
2.9 |
fgetval( /* get specified data word */ |
| 17 |
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FILE *fp, |
| 18 |
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int ty, |
| 19 |
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void *vp /* type depends on ty */ |
| 20 |
|
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) |
| 21 |
greg |
2.1 |
{ |
| 22 |
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char wrd[64]; |
| 23 |
greg |
2.9 |
char *cp; |
| 24 |
|
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int c; |
| 25 |
greg |
2.1 |
/* elide comments (# to EOL) */ |
| 26 |
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do { |
| 27 |
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while ((c = getc(fp)) != EOF && isspace(c)) |
| 28 |
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; |
| 29 |
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if (c == '#') |
| 30 |
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while ((c = getc(fp)) != EOF && c != '\n') |
| 31 |
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; |
| 32 |
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} while (c == '\n'); |
| 33 |
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if (c == EOF) |
| 34 |
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return(EOF); |
| 35 |
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/* get word */ |
| 36 |
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cp = wrd; |
| 37 |
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do { |
| 38 |
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*cp++ = c; |
| 39 |
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if (cp - wrd >= sizeof(wrd)) |
| 40 |
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return(0); |
| 41 |
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} while ((c = getc(fp)) != EOF && !isspace(c) && c != '#'); |
| 42 |
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if (c != EOF) |
| 43 |
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ungetc(c, fp); |
| 44 |
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*cp = '\0'; |
| 45 |
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switch (ty) { /* check and convert it */ |
| 46 |
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case 'h': /* short */ |
| 47 |
greg |
2.2 |
if (!isint(wrd)) |
| 48 |
greg |
2.1 |
return(0); |
| 49 |
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*(short *)vp = c = atoi(wrd); |
| 50 |
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if (*(short *)vp != c) |
| 51 |
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return(0); |
| 52 |
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return(1); |
| 53 |
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case 'i': /* integer */ |
| 54 |
greg |
2.2 |
if (!isint(wrd)) |
| 55 |
greg |
2.1 |
return(0); |
| 56 |
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*(int *)vp = atoi(wrd); |
| 57 |
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return(1); |
| 58 |
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case 'l': /* long */ |
| 59 |
greg |
2.2 |
if (!isint(wrd)) |
| 60 |
greg |
2.1 |
return(0); |
| 61 |
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*(long *)vp = atol(wrd); |
| 62 |
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return(1); |
| 63 |
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case 'f': /* float */ |
| 64 |
greg |
2.2 |
if (!isflt(wrd)) |
| 65 |
greg |
2.1 |
return(0); |
| 66 |
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*(float *)vp = atof(wrd); |
| 67 |
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return(1); |
| 68 |
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case 'd': /* double */ |
| 69 |
greg |
2.2 |
if (!isflt(wrd)) |
| 70 |
greg |
2.1 |
return(0); |
| 71 |
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*(double *)vp = atof(wrd); |
| 72 |
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return(1); |
| 73 |
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case 's': /* string */ |
| 74 |
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strcpy(vp, wrd); |
| 75 |
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return(1); |
| 76 |
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default: /* unsupported type */ |
| 77 |
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return(0); |
| 78 |
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} |
| 79 |
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} |
