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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* Load whitespace separated words from a file into an array. |
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* Assume the passed pointer array is big enough to hold them all. |
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* |
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* External symbols declared in standard.h |
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*/ |
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#define NULL 0 |
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#include "copyright.h" |
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#define BUFSIZ 4096 /* file must be smaller than this */ |
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#include <ctype.h> |
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|
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#define NULL 0 |
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|
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#define MAXFLEN 8192 /* file must be smaller than this */ |
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|
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extern char *bmalloc(); |
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|
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char **words; |
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char *fname; |
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{ |
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char **wp = words; |
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int fd; |
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char *buf; |
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char buf[MAXFLEN]; |
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register int n; |
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register char *cp; |
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/* allocate memory */ |
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if ((cp = buf = bmalloc(BUFSIZ)) == NULL) |
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return(-1); |
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/* load file into buffer */ |
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if (fname == NULL) |
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return(-1); /* no filename */ |
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if ((fd = open(fname, 0)) < 0) |
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goto err; |
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n = read(fd, buf, BUFSIZ); |
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return(-1); /* open error */ |
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n = read(fd, buf, MAXFLEN); |
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close(fd); |
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if (n < 0) |
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goto err; |
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if (n == BUFSIZ) /* file too big, take what we can */ |
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if (n < 0) /* read error */ |
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return(-1); |
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if (n == MAXFLEN) /* file too big, take what we can */ |
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while (!isspace(buf[--n])) |
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if (n <= 0) |
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goto err; |
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bfree(buf+n+1, BUFSIZ-n-1); /* return unneeded memory */ |
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while (n > 0) { /* break buffer into words */ |
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while (isspace(*cp)) { |
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cp++; |
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if (--n <= 0) |
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return(wp - words); |
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} |
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*wp++ = cp; |
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while (!isspace(*cp)) { |
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cp++; |
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if (--n <= 0) |
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break; |
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} |
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*cp++ = '\0'; n--; |
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if (n <= 0) /* one long word! */ |
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return(-1); |
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buf[n] = '\0'; /* terminate */ |
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return(wordstring(words, buf)); /* wordstring does the rest */ |
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} |
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|
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|
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int |
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wordstring(avl, str) /* allocate and load argument list */ |
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char **avl; |
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char *str; |
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{ |
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register char *cp, **ap; |
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|
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if (str == NULL) |
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return(-1); |
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cp = bmalloc(strlen(str)+1); |
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if (cp == NULL) /* ENOMEM */ |
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return(-1); |
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strcpy(cp, str); |
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ap = avl; /* parse into words */ |
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for ( ; ; ) { |
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while (isspace(*cp)) /* nullify spaces */ |
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*cp++ = '\0'; |
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if (!*cp) /* all done? */ |
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break; |
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*ap++ = cp; /* add argument to list */ |
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while (*++cp && !isspace(*cp)) |
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; |
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} |
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return(wp - words); |
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err: |
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bfree(buf, BUFSIZ); |
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return(-1); |
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*ap = NULL; |
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return(ap - avl); |
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} |
