Mercurial > trustbridge > nss-cmake-static

annotate nspr/lib/libc/src/strstr.c @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 /* This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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5
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6 #include "plstr.h"
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7 #include <string.h>
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8
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9 PR_IMPLEMENT(char *)
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10 PL_strstr(const char *big, const char *little)
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11 {
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12 if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
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13 if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
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14
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15 return strstr(big, little);
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16 }
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17
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18 PR_IMPLEMENT(char *)
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19 PL_strrstr(const char *big, const char *little)
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20 {
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21 const char *p;
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22 size_t ll;
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23 size_t bl;
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24
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25 if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
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26 if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
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27
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28 ll = strlen(little);
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29 bl = strlen(big);
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30 if( bl < ll ) return (char *)0;
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31 p = &big[ bl - ll ];
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32
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33 for( ; p >= big; p-- )
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34 if( *little == *p )
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35 if( 0 == strncmp(p, little, ll) )
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36 return (char *)p;
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37
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38 return (char *)0;
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39 }
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40
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41 PR_IMPLEMENT(char *)
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42 PL_strnstr(const char *big, const char *little, PRUint32 max)
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43 {
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44 size_t ll;
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45
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46 if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
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47 if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
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48
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49 ll = strlen(little);
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50 if( ll > (size_t)max ) return (char *)0;
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51 max -= (PRUint32)ll;
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52 max++;
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53
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54 for( ; max && *big; big++, max-- )
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55 if( *little == *big )
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56 if( 0 == strncmp(big, little, ll) )
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57 return (char *)big;
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58
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59 return (char *)0;
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60 }
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61
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62 PR_IMPLEMENT(char *)
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63 PL_strnrstr(const char *big, const char *little, PRUint32 max)
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64 {
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65 const char *p;
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66 size_t ll;
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67
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68 if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
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69 if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
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70
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71 ll = strlen(little);
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72
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73 for( p = big; max && *p; p++, max-- )
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74 ;
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75
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76 p -= ll;
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77 if( p < big ) return (char *)0;
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78
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79 for( ; p >= big; p-- )
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80 if( *little == *p )
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81 if( 0 == strncmp(p, little, ll) )
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82 return (char *)p;
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83
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84 return (char *)0;
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85 }
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