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greg |
2.1 |
#ifndef lint |
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greg |
2.6 |
static const char RCSid[] = "$Id: fgetval.c,v 2.5 2003/06/07 12:50:20 schorsch Exp $"; |
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greg |
2.1 |
#endif |
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/* |
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* Read white space separated values from stream |
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greg |
2.3 |
* |
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greg |
2.6 |
* External symbols declared in rtio.h |
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greg |
2.3 |
*/ |
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greg |
2.6 |
#include "rtio.h" |
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greg |
2.1 |
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#include <math.h> |
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#include <ctype.h> |
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int |
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fgetval(fp, ty, vp) /* get specified data word */ |
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register FILE *fp; |
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int ty; |
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char *vp; |
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{ |
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char wrd[64]; |
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register char *cp; |
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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 == '#') |
| 29 |
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while ((c = getc(fp)) != EOF && c != '\n') |
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; |
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} while (c == '\n'); |
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if (c == EOF) |
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return(EOF); |
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/* get word */ |
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cp = wrd; |
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do { |
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*cp++ = c; |
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if (cp - wrd >= sizeof(wrd)) |
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return(0); |
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} while ((c = getc(fp)) != EOF && !isspace(c) && c != '#'); |
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if (c != EOF) |
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ungetc(c, fp); |
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*cp = '\0'; |
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switch (ty) { /* check and convert it */ |
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case 'h': /* short */ |
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greg |
2.2 |
if (!isint(wrd)) |
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greg |
2.1 |
return(0); |
| 48 |
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*(short *)vp = c = atoi(wrd); |
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if (*(short *)vp != c) |
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return(0); |
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return(1); |
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case 'i': /* integer */ |
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greg |
2.2 |
if (!isint(wrd)) |
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greg |
2.1 |
return(0); |
| 55 |
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*(int *)vp = atoi(wrd); |
| 56 |
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return(1); |
| 57 |
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case 'l': /* long */ |
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greg |
2.2 |
if (!isint(wrd)) |
| 59 |
greg |
2.1 |
return(0); |
| 60 |
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*(long *)vp = atol(wrd); |
| 61 |
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return(1); |
| 62 |
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case 'f': /* float */ |
| 63 |
greg |
2.2 |
if (!isflt(wrd)) |
| 64 |
greg |
2.1 |
return(0); |
| 65 |
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*(float *)vp = atof(wrd); |
| 66 |
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return(1); |
| 67 |
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case 'd': /* double */ |
| 68 |
greg |
2.2 |
if (!isflt(wrd)) |
| 69 |
greg |
2.1 |
return(0); |
| 70 |
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*(double *)vp = atof(wrd); |
| 71 |
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return(1); |
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case 's': /* string */ |
| 73 |
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strcpy(vp, wrd); |
| 74 |
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return(1); |
| 75 |
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default: /* unsupported type */ |
| 76 |
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return(0); |
| 77 |
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} |
| 78 |
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} |
