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#ifndef lint
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static const char RCSid[] = "$Id: fgetval.c,v 2.8 2004/03/28 20:33:12 schorsch Exp $";
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#endif
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/*
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* Read white space separated values from stream
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*
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* External symbols declared in rtio.h
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*/
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#include "rtio.h"
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#include <stdlib.h>
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#include <ctype.h>
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int
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fgetval( /* get specified data word */
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FILE *fp,
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int ty,
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void *vp /* type depends on ty */
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)
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{
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char wrd[64];
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char *cp;
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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 == '#')
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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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if (!isint(wrd))
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return(0);
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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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if (!isint(wrd))
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return(0);
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*(int *)vp = atoi(wrd);
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return(1);
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case 'l': /* long */
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if (!isint(wrd))
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return(0);
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*(long *)vp = atol(wrd);
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return(1);
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case 'f': /* float */
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if (!isflt(wrd))
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return(0);
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*(float *)vp = atof(wrd);
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return(1);
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case 'd': /* double */
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if (!isflt(wrd))
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return(0);
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*(double *)vp = atof(wrd);
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return(1);
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case 's': /* string */
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strcpy(vp, wrd);
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return(1);
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default: /* unsupported type */
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return(0);
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}
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}
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