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Last change
on this file since 201 was 2, checked in by root, 23 years ago |
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Initial revision
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Author Date Id Revision
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File size:
2.1 KB
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| 1 | #define INCL_DOS
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| 2 |
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| 3 | #include <os2.h>
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| 4 | #include <stdlib.h>
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| 5 | #include <stdio.h>
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| 6 | #include <string.h>
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| 7 | #include <ctype.h>
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| 8 |
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| 9 | #pragma alloc_text(MISC8,stristr,strnstr,strnistr,findstring)
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| 10 |
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| 11 |
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| 12 | CHAR * stristr (register CHAR *t, CHAR *s) {
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| 13 |
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| 14 | /* case-insensitive strstr() */
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| 15 |
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| 16 | register CHAR *t1,*s1;
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| 17 |
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| 18 | while (*t) {
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| 19 | t1 = t;
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| 20 | s1 = s;
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| 21 | while (*s1) {
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| 22 | if (toupper (*s1) != toupper (*t))
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| 23 | break;
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| 24 | else {
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| 25 | s1++;
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| 26 | t++;
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| 27 | }
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| 28 | }
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| 29 | if (!*s1)
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| 30 | return t1;
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| 31 | t = t1 + 1;
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| 32 | }
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| 33 | return NULL;
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| 34 | }
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| 35 |
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| 36 |
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| 37 |
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| 38 | CHAR * strnistr (register CHAR *t, CHAR *s, LONG len) {
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| 39 |
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| 40 | /* case-insensitive strnstr() */
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| 41 |
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| 42 | register CHAR *s1;
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| 43 | register LONG len2;
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| 44 |
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| 45 | len2 = 0;
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| 46 | while (len > len2) {
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| 47 | s1 = s;
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| 48 | while (len2 < len) {
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| 49 | if (toupper (*s1) != toupper (t[len2]))
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| 50 | break;
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| 51 | else {
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| 52 | len2++;
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| 53 | s1++;
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| 54 | }
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| 55 | }
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| 56 | if (!*s1)
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| 57 | return t + (len2 - strlen(s));
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| 58 | len2++;
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| 59 | }
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| 60 | return NULL;
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| 61 | }
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| 62 |
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| 63 |
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| 64 | CHAR * strnstr (register CHAR *t, CHAR *s, LONG len) {
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| 65 |
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| 66 | /* strnstr() */
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| 67 |
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| 68 | register CHAR *s1;
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| 69 | register LONG len2;
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| 70 |
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| 71 | len2 = 0;
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| 72 | while (len > len2) {
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| 73 | s1 = s;
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| 74 | while (len2 < len) {
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| 75 | if (*s1 != t[len2])
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| 76 | break;
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| 77 | else {
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| 78 | len2++;
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| 79 | s1++;
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| 80 | }
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| 81 | }
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| 82 | if (!*s1)
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| 83 | return t + (len2 - strlen(s));
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| 84 | len2++;
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| 85 | }
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| 86 | return NULL;
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| 87 | }
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| 88 |
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| 89 |
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| 90 | CHAR * findstring (CHAR *findthis, ULONG lenthis, CHAR *findin,
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| 91 | ULONG lenin, BOOL sensitive) {
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| 92 |
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| 93 | register CHAR *this,*in;
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| 94 | register ULONG lenthis2,lenin2;
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| 95 |
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| 96 | if(!findthis || !findin || !lenthis || !lenin)
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| 97 | return NULL;
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| 98 | do {
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| 99 | this = findthis;
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| 100 | lenthis2 = lenthis;
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| 101 | in = findin;
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| 102 | lenin2 = lenin;
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| 103 | while(lenthis2 && lenin2) {
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| 104 | if(!sensitive) {
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| 105 | if(toupper(*this) != toupper(*in))
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| 106 | break;
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| 107 | else {
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| 108 | this++;
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| 109 | in++;
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| 110 | lenthis2--;
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| 111 | lenin2--;
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| 112 | }
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| 113 | }
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| 114 | else {
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| 115 | if(*this != *in)
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| 116 | break;
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| 117 | else {
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| 118 | this++;
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| 119 | in++;
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| 120 | lenthis2--;
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| 121 | lenin2--;
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| 122 | }
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| 123 | }
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| 124 | }
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| 125 | if(lenthis2) {
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| 126 | lenin--;
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| 127 | findin++;
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| 128 | }
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| 129 | } while(lenin && lenthis2);
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| 130 | return (lenthis2) ? NULL : in - lenthis;
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| 131 | }
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| 132 |
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