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-rw-r--r--nsprpub/lib/libc/src/strcase.c174
1 files changed, 174 insertions, 0 deletions
diff --git a/nsprpub/lib/libc/src/strcase.c b/nsprpub/lib/libc/src/strcase.c
new file mode 100644
index 000000000..ad542587b
--- /dev/null
+++ b/nsprpub/lib/libc/src/strcase.c
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "plstr.h"
+#include <string.h>
+
+static const unsigned char uc[] =
+{
+ '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
+ '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
+ '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
+ '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
+ ' ', '!', '"', '#', '$', '%', '&', '\'',
+ '(', ')', '*', '+', ',', '-', '.', '/',
+ '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', ':', ';', '<', '=', '>', '?',
+ '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
+ 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
+ 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
+ 'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
+ '`', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
+ 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
+ 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
+ 'X', 'Y', 'Z', '{', '|', '}', '~', '\177',
+ 0200, 0201, 0202, 0203, 0204, 0205, 0206, 0207,
+ 0210, 0211, 0212, 0213, 0214, 0215, 0216, 0217,
+ 0220, 0221, 0222, 0223, 0224, 0225, 0226, 0227,
+ 0230, 0231, 0232, 0233, 0234, 0235, 0236, 0237,
+ 0240, 0241, 0242, 0243, 0244, 0245, 0246, 0247,
+ 0250, 0251, 0252, 0253, 0254, 0255, 0256, 0257,
+ 0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,
+ 0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,
+ 0300, 0301, 0302, 0303, 0304, 0305, 0306, 0307,
+ 0310, 0311, 0312, 0313, 0314, 0315, 0316, 0317,
+ 0320, 0321, 0322, 0323, 0324, 0325, 0326, 0327,
+ 0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,
+ 0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,
+ 0350, 0351, 0352, 0353, 0354, 0355, 0356, 0357,
+ 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,
+ 0370, 0371, 0372, 0373, 0374, 0375, 0376, 0377
+};
+
+PR_IMPLEMENT(PRIntn)
+PL_strcasecmp(const char *a, const char *b)
+{
+ const unsigned char *ua = (const unsigned char *)a;
+ const unsigned char *ub = (const unsigned char *)b;
+
+ if( (const char *)0 == a )
+ return ((const char *)0 == b) ? 0 : -1;
+ if( (const char *)0 == b )
+ return 1;
+
+ while( (uc[*ua] == uc[*ub]) && ('\0' != *a) )
+ {
+ a++;
+ ua++;
+ ub++;
+ }
+
+ return (PRIntn)(uc[*ua] - uc[*ub]);
+}
+
+PR_IMPLEMENT(PRIntn)
+PL_strncasecmp(const char *a, const char *b, PRUint32 max)
+{
+ const unsigned char *ua = (const unsigned char *)a;
+ const unsigned char *ub = (const unsigned char *)b;
+
+ if( (const char *)0 == a )
+ return ((const char *)0 == b) ? 0 : -1;
+ if( (const char *)0 == b )
+ return 1;
+
+ while( max && (uc[*ua] == uc[*ub]) && ('\0' != *a) )
+ {
+ a++;
+ ua++;
+ ub++;
+ max--;
+ }
+
+ if( 0 == max ) return (PRIntn)0;
+
+ return (PRIntn)(uc[*ua] - uc[*ub]);
+}
+
+PR_IMPLEMENT(char *)
+PL_strcasestr(const char *big, const char *little)
+{
+ PRUint32 ll;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ ll = strlen(little);
+
+ for( ; *big; big++ )
+ /* obvious improvement available here */
+ if( 0 == PL_strncasecmp(big, little, ll) )
+ return (char *)big;
+
+ return (char *)0;
+}
+
+PR_IMPLEMENT(char *)
+PL_strcaserstr(const char *big, const char *little)
+{
+ const char *p;
+ PRUint32 bl, ll;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ bl = strlen(big);
+ ll = strlen(little);
+ if( bl < ll ) return (char *)0;
+ p = &big[ bl - ll ];
+
+ for( ; p >= big; p-- )
+ /* obvious improvement available here */
+ if( 0 == PL_strncasecmp(p, little, ll) )
+ return (char *)p;
+
+ return (char *)0;
+}
+
+PR_IMPLEMENT(char *)
+PL_strncasestr(const char *big, const char *little, PRUint32 max)
+{
+ PRUint32 ll;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ ll = strlen(little);
+ if( ll > max ) return (char *)0;
+ max -= ll;
+ max++;
+
+ for( ; max && *big; big++, max-- )
+ /* obvious improvement available here */
+ if( 0 == PL_strncasecmp(big, little, ll) )
+ return (char *)big;
+
+ return (char *)0;
+}
+
+PR_IMPLEMENT(char *)
+PL_strncaserstr(const char *big, const char *little, PRUint32 max)
+{
+ const char *p;
+ PRUint32 ll;
+
+ if( ((const char *)0 == big) || ((const char *)0 == little) ) return (char *)0;
+ if( ((char)0 == *big) || ((char)0 == *little) ) return (char *)0;
+
+ ll = strlen(little);
+
+ for( p = big; max && *p; p++, max-- )
+ ;
+
+ p -= ll;
+ if( p < big ) return (char *)0;
+
+ for( ; p >= big; p-- )
+ /* obvious improvement available here */
+ if( 0 == PL_strncasecmp(p, little, ll) )
+ return (char *)p;
+
+ return (char *)0;
+}