107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/* split.c
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Split a string into tokens.
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Copyright (C) 1992 Ian Lance Taylor
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This file is part of the Taylor UUCP uuconf library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License
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as published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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The author of the program may be contacted at ian@airs.com or
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c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
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*/
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#include "uucnfi.h"
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#if USE_RCS_ID
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const char _uuconf_split_rcsid[] = "$Id: split.c,v 1.1 1993/08/04 19:35:02 jtc Exp $";
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#endif
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#include <ctype.h>
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/* Split a string into tokens. The bsep argument is the separator to
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use. If it is the null byte, white space is used as the separator,
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and leading white space is discarded. Otherwise, each occurrence
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of the separator character delimits a field (and thus some fields
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may be empty). The array and size arguments may be used to reuse
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the same memory. This function is not tied to uuconf; the only way
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it can fail is if malloc or realloc fails. */
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int
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_uuconf_istrsplit (zline, bsep, ppzsplit, pcsplit)
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register char *zline;
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int bsep;
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char ***ppzsplit;
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size_t *pcsplit;
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{
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size_t i;
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i = 0;
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while (TRUE)
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{
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if (bsep == '\0')
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{
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while (isspace (BUCHAR (*zline)))
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++zline;
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if (*zline == '\0')
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break;
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}
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if (i >= *pcsplit)
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{
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char **pznew;
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size_t cnew;
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if (*pcsplit == 0)
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{
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cnew = 8;
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pznew = (char **) malloc (cnew * sizeof (char *));
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}
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else
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{
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cnew = *pcsplit * 2;
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pznew = (char **) realloc ((pointer) *ppzsplit,
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cnew * sizeof (char *));
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}
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if (pznew == NULL)
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return -1;
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*ppzsplit = pznew;
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*pcsplit = cnew;
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}
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(*ppzsplit)[i] = zline;
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++i;
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if (bsep == '\0')
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{
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while (*zline != '\0' && ! isspace (BUCHAR (*zline)))
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++zline;
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}
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else
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{
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while (*zline != '\0' && *zline != bsep)
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++zline;
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}
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if (*zline == '\0')
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break;
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*zline++ = '\0';
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}
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return i;
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}
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