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annotate src/libsys/strtok.c @ 150:d43dadd91383

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l1_small_asm.S for gcc: same change as in l1_small.c TMS470 version
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 06 Feb 2019 23:28:49 +0000
parents 425ab6d987f3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 1985 Regents of the University of California.
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3 * All rights reserved.
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4 *
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5 * Redistribution and use in source and binary forms are permitted
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6 * provided that the above copyright notice and this paragraph are
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7 * duplicated in all such forms and that any documentation,
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8 * advertising materials, and other materials related to such
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9 * distribution and use acknowledge that the software was developed
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10 * by the University of California, Berkeley. The name of the
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11 * University may not be used to endorse or promote products derived
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12 * from this software without specific prior written permission.
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13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
425ab6d987f3 src/libsys: pieced together from Citrine
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14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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16 */
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17
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18 #if defined(LIBC_SCCS) && !defined(lint)
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19 static char sccsid[] = "@(#)strtok.c 5.4 (Berkeley) 6/27/88";
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20 #endif /* LIBC_SCCS and not lint */
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21
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22 char *
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23 strtok(s, sep)
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24 register char *s, *sep;
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25 {
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26 register char *p;
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27 register c;
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28 static char *lasts;
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29
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30 if (s == 0)
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31 s = lasts;
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32 if (s == 0)
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33 return (0);
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34
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35 while (c = *s) {
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36 if (!index(sep, c))
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37 break;
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38 s++;
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39 }
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40
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41 if (c == '\0') {
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42 lasts = 0;
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43 return (0);
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44 }
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45
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46 for (p = s; c = *++p; )
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47 if (index(sep, c))
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48 break;
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49
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50 if (c == '\0')
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51 lasts = 0;
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52 else {
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53 *p++ = '\0';
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54 lasts = p;
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55 }
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56 return (s);
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57 }