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#ifndef lint |
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static const char RCSid[] = "$Id: fgetword.c,v 2.3 2003/02/25 02:47:21 greg Exp $"; |
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#endif |
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/* |
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* Read white space separated words from stream |
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* |
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* External symbols declared in rtio.h |
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*/ |
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|
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#include "copyright.h" |
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|
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#include "rtio.h" |
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|
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#include <ctype.h> |
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|
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|
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char * |
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fgetword(s, n, fp) /* get (quoted) word up to n-1 characters */ |
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char *s; |
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int n; |
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register FILE *fp; |
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{ |
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int quote = '\0'; |
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register char *cp; |
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register int c; |
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/* skip initial white space */ |
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do |
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c = getc(fp); |
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while (isspace(c)); |
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/* check for quote */ |
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if ((c == '"' | c == '\'')) { |
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quote = c; |
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c = getc(fp); |
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} |
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/* check for end of file */ |
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if (c == EOF) |
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return(NULL); |
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/* get actual word */ |
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cp = s; |
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do { |
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if (--n <= 0) /* check length limit */ |
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break; |
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*cp++ = c; |
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c = getc(fp); |
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} while (c != EOF && !(quote ? c==quote : isspace(c))); |
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*cp = '\0'; |
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if ((c != EOF & !quote)) /* replace space */ |
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ungetc(c, fp); |
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return(s); |
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} |
