nspr/lib/libc/src/strcase.c - Issue 2078763002: Delete bundled copy of NSS and replace with README.

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Issue 2078763002: Delete bundled copy of NSS and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/nss@master

Patch Set: Delete bundled copy of NSS and replace with README. Created 4 years, 6 months ago

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1 /* -- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -- */

2 /* This Source Code Form is subject to the terms of the Mozilla Public

3 * License, v. 2.0. If a copy of the MPL was not distributed with this

4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

5

6 #include "plstr.h"

7 #include <string.h>

8

9 static const unsigned char uc[] =

10 {

11 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',

12 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',

13 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',

14 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',

15 ' ', '!', '"', '#', '$', '%', '&', '\'',

16 '(', ')', '*', '+', ',', '-', '.', '/',

17 '0', '1', '2', '3', '4', '5', '6', '7',

18 '8', '9', ':', ';', '<', '=', '>', '?',

19 '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',

20 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',

21 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',

22 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',

23 '`', 'A', 'B', 'C', 'D', 'E', 'F', 'G',

24 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',

25 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',

26 'X', 'Y', 'Z', '{', '\|', '}', '~', '\177',

27 0200, 0201, 0202, 0203, 0204, 0205, 0206, 0207,

28 0210, 0211, 0212, 0213, 0214, 0215, 0216, 0217,

29 0220, 0221, 0222, 0223, 0224, 0225, 0226, 0227,

30 0230, 0231, 0232, 0233, 0234, 0235, 0236, 0237,

31 0240, 0241, 0242, 0243, 0244, 0245, 0246, 0247,

32 0250, 0251, 0252, 0253, 0254, 0255, 0256, 0257,

33 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,

34 0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,

35 0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307,

36 0310, 0311, 0312, 0313, 0314, 0315, 0316, 0317,

37 0320, 0321, 0322, 0323, 0324, 0325, 0326, 0327,

38 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,

39 0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,

40 0350, 0351, 0352, 0353, 0354, 0355, 0356, 0357,

41 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,

42 0370, 0371, 0372, 0373, 0374, 0375, 0376, 0377

43 };

44

45 PR_IMPLEMENT(PRIntn)

46 PL_strcasecmp(const char a, const char b)

47 {

48 const unsigned char ua = (const unsigned char )a;

49 const unsigned char ub = (const unsigned char )b;

50

51 if( ((const char )0 == a) \|\| (const char )0 == b )

52 return (PRIntn)(a-b);

53

54 while( (uc[ua] == uc[ub]) && ('\0' != *a) )

55 {

56 a++;

57 ua++;

58 ub++;

59 }

60

61 return (PRIntn)(uc[ua] - uc[ub]);

62 }

63

64 PR_IMPLEMENT(PRIntn)

65 PL_strncasecmp(const char a, const char b, PRUint32 max)

66 {

67 const unsigned char ua = (const unsigned char )a;

68 const unsigned char ub = (const unsigned char )b;

69

70 if( ((const char )0 == a) \|\| (const char )0 == b )

71 return (PRIntn)(a-b);

72

73 while( max && (uc[ua] == uc[ub]) && ('\0' != *a) )

74 {

75 a++;

76 ua++;

77 ub++;

78 max--;

79 }

80

81 if( 0 == max ) return (PRIntn)0;

82

83 return (PRIntn)(uc[ua] - uc[ub]);

84 }

85

86 PR_IMPLEMENT(char *)

87 PL_strcasestr(const char big, const char little)

88 {

89 PRUint32 ll;

90

91 if( ((const char )0 == big) \|\| ((const char )0 == little) ) return (char * )0;

92 if( ((char)0 == big) \|\| ((char)0 == little) ) return (char *)0;

93

94 ll = strlen(little);

95

96 for( ; *big; big++ )

97 /* obvious improvement available here */

98 if( 0 == PL_strncasecmp(big, little, ll) )

99 return (char *)big;

100

101 return (char *)0;

102 }

103

104 PR_IMPLEMENT(char *)

105 PL_strcaserstr(const char big, const char little)

106 {

107 const char *p;

108 PRUint32 bl, ll;

109

110 if( ((const char )0 == big) \|\| ((const char )0 == little) ) return (char * )0;

111 if( ((char)0 == big) \|\| ((char)0 == little) ) return (char *)0;

112

113 bl = strlen(big);

114 ll = strlen(little);

115 if( bl < ll ) return (char *)0;

116 p = &big[ bl - ll ];

117

118 for( ; p >= big; p-- )

119 /* obvious improvement available here */

120 if( 0 == PL_strncasecmp(p, little, ll) )

121 return (char *)p;

122

123 return (char *)0;

124 }

125

126 PR_IMPLEMENT(char *)

127 PL_strncasestr(const char big, const char little, PRUint32 max)

128 {

129 PRUint32 ll;

130

131 if( ((const char )0 == big) \|\| ((const char )0 == little) ) return (char * )0;

132 if( ((char)0 == big) \|\| ((char)0 == little) ) return (char *)0;

133

134 ll = strlen(little);

135 if( ll > max ) return (char *)0;

136 max -= ll;

137 max++;

138

139 for( ; max && *big; big++, max-- )

140 /* obvious improvement available here */

141 if( 0 == PL_strncasecmp(big, little, ll) )

142 return (char *)big;

143

144 return (char *)0;

145 }

146

147 PR_IMPLEMENT(char *)

148 PL_strncaserstr(const char big, const char little, PRUint32 max)

149 {

150 const char *p;

151 PRUint32 ll;

152

153 if( ((const char )0 == big) \|\| ((const char )0 == little) ) return (char * )0;

154 if( ((char)0 == big) \|\| ((char)0 == little) ) return (char *)0;

155

156 ll = strlen(little);

157

158 for( p = big; max && *p; p++, max-- )

159 ;

160

161 p -= ll;

162 if( p < big ) return (char *)0;

163

164 for( ; p >= big; p-- )

165 /* obvious improvement available here */

166 if( 0 == PL_strncasecmp(p, little, ll) )

167 return (char *)p;

168

169 return (char *)0;

170 }

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