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1 /*- |
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2 * Copyright (c) 1998 Softweyr LLC. All rights reserved. |
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3 * |
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4 * strtok_r, from Berkeley strtok |
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5 * Oct 13, 1998 by Wes Peters <wes@softweyr.com> |
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6 * |
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7 * Copyright (c) 1988, 1993 |
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8 * The Regents of the University of California. All rights reserved. |
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9 * |
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10 * Redistribution and use in source and binary forms, with or without |
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11 * modification, are permitted provided that the following conditions |
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12 * are met: |
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13 * 1. Redistributions of source code must retain the above copyright |
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14 * notices, this list of conditions and the following disclaimer. |
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15 * 2. Redistributions in binary form must reproduce the above copyright |
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16 * notices, this list of conditions and the following disclaimer in the |
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17 * documentation and/or other materials provided with the distribution. |
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18 * 4. Neither the name of the University nor the names of its contributors |
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19 * may be used to endorse or promote products derived from this software |
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20 * without specific prior written permission. |
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21 * |
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22 * THIS SOFTWARE IS PROVIDED BY SOFTWEYR LLC, THE REGENTS AND CONTRIBUTORS |
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23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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25 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SOFTWEYR LLC, THE |
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26 * REGENTS, OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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28 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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33 * © Portions copyright (c) 2005-2006 Nokia Corporation. All rights reserved. |
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34 */ |
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35 |
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36 #if defined(LIBC_SCCS) && !defined(lint) |
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37 static char sccsid[] = "@(#)strtok.c 8.1 (Berkeley) 6/4/93"; |
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38 #endif /* LIBC_SCCS and not lint */ |
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39 #include <sys/cdefs.h> |
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40 #ifndef __SYMBIAN32__ |
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41 __FBSDID("$FreeBSD: src/lib/libc/string/strtok.c,v 1.9 2002/09/07 02:53:19 tjr Exp $"); |
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42 #endif |
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43 |
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44 #include <stddef.h> |
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45 #ifdef DEBUG_STRTOK |
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46 #include <stdio.h> |
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47 #endif |
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48 #include <string.h> |
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49 |
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50 #if (defined(__SYMBIAN32__) && (defined(__WINSCW__) || defined(__WINS__))) |
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51 #include "libc_wsd_defs.h" |
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52 #endif |
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53 |
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54 |
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55 char *__strtok_r(char *, const char *, char **); |
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56 |
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57 //__weak_reference(__strtok_r, strtok_r); |
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58 |
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59 char * |
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60 __strtok_r(char *s, const char *delim, char **last) |
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61 { |
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62 char *spanp, *tok; |
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63 int c, sc; |
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64 |
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65 if (s == NULL && (s = *last) == NULL) |
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66 return (NULL); |
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67 |
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68 /* |
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69 * Skip (span) leading delimiters (s += strspn(s, delim), sort of). |
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70 */ |
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71 cont: |
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72 c = *s++; |
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73 for (spanp = (char *)delim; (sc = *spanp++) != 0;) { |
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74 if (c == sc) |
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75 goto cont; |
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76 } |
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77 |
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78 if (c == 0) { /* no non-delimiter characters */ |
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79 *last = NULL; |
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80 return (NULL); |
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81 } |
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82 tok = s - 1; |
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83 |
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84 /* |
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85 * Scan token (scan for delimiters: s += strcspn(s, delim), sort of). |
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86 * Note that delim must have one NUL; we stop if we see that, too. |
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87 */ |
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88 for (;;) { |
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89 c = *s++; |
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90 spanp = (char *)delim; |
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91 do { |
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92 if ((sc = *spanp++) == c) { |
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93 if (c == 0) |
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94 s = NULL; |
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95 else |
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96 s[-1] = '\0'; |
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97 *last = s; |
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98 return (tok); |
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99 } |
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100 } while (sc != 0); |
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101 } |
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102 /* NOTREACHED */ |
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103 } |
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104 |
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105 #ifdef EMULATOR |
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106 |
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107 GET_STATIC_VAR_FROM_TLS(last, char *) |
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108 #define last (*GET_WSD_VAR_NAME(last, s)()) |
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109 #endif //EMULATOR |
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110 |
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111 EXPORT_C |
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112 char * |
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113 strtok(char *s, const char *delim) |
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114 { |
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115 #ifndef EMULATOR |
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116 static char *last; |
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117 #endif //EMULATOR |
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118 |
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119 return (__strtok_r(s, delim, &last)); |
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120 } |
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121 |
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122 #ifdef DEBUG_STRTOK |
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123 /* |
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124 * Test the tokenizer. |
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125 */ |
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126 int |
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127 main(void) |
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128 { |
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129 char blah[80], test[80]; |
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130 char *brkb, *brkt, *phrase, *sep, *word; |
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131 |
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132 sep = "\\/:;=-"; |
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133 phrase = "foo"; |
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134 |
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135 printf("String tokenizer test:\n"); |
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136 strcpy(test, "This;is.a:test:of=the/string\\tokenizer-function."); |
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137 for (word = strtok(test, sep); word; word = strtok(NULL, sep)) |
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138 printf("Next word is \"%s\".\n", word); |
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139 strcpy(test, "This;is.a:test:of=the/string\\tokenizer-function."); |
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140 |
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141 for (word = strtok_r(test, sep, &brkt); word; |
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142 word = strtok_r(NULL, sep, &brkt)) { |
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143 strcpy(blah, "blah:blat:blab:blag"); |
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144 |
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145 for (phrase = strtok_r(blah, sep, &brkb); phrase; |
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146 phrase = strtok_r(NULL, sep, &brkb)) |
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147 printf("So far we're at %s:%s\n", word, phrase); |
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148 } |
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149 |
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150 return (0); |
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151 } |
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152 |
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153 #endif /* DEBUG_STRTOK */ |