Tiberiu Chibici
852cf1bb17
==================================================== Mainly changed: FS.Initrd + (kind of) refractored VFS, bugfixed + Rewrote 'initrd' file system, fixed many problems + Working 'cat' and 'dir' console commands + Wrote 'initrd' image write application (for windows), however it may be bugged
86 lines
1.4 KiB
C
86 lines
1.4 KiB
C
/*
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* str_ops.c
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*
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* Created on: Aug 27, 2011
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* Author: Tiberiu
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*/
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#include <types.h>
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#include <ctype.h>
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uint32 strlen (string s)
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{
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string end = s;
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while (*end != '\0')
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end++;
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return (uint32)(end - s);
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}
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int32 strcmp (string a, string b)
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{
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unsigned char c1, c2;
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while (*a != '\0' && *b != '\0' && *a == *b) {
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a++; b++;
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}
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c1 = (*(unsigned char*) a);
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c2 = (*(unsigned char*) b);
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return ((c1 < c2) ? -1 : (c1 > c2));
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}
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int32 strncmp (string a, string b, uint32 n)
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{
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unsigned char uc1, uc2;
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if (!n) return 0;
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while (n-- > 0 && *a == *b) {
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if (n == 0 || (*a == *b && *a == '\0')) return 0;
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a++; b++;
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}
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uc1 = (* (unsigned char*)a);
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uc2 = (* (unsigned char*)b);
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return ((uc1 < uc2) ? -1 : (uc1 > uc2));
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}
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int32 strcasecmp (string a, string b)
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{
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unsigned char c1, c2;
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while (*a != '\0' && *b != '\0' && tolower(*a) == tolower(*b)) {
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a++; b++;
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}
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c1 = tolower(*(unsigned char*) a);
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c2 = tolower(*(unsigned char*) b);
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return ((c1 < c2) ? -1 : (c1 > c2));
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}
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string strcpy (string s1, const string s2)
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{
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char *dst = s1;
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const char *src = s2;
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while ((*dst++ = *src++) != '\0') ;
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return s1;
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}
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char* strchr (string s, int c)
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{
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while (*s != '\0' && *s != (char)c) s++;
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return ((*s == (char)c) ? (char*)s : NULL);
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}
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char* strrchr (string s, int c)
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{
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string last = NULL;
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if (c == '\0') return strchr(s, c);
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while ((s = strchr(s, c)) != NULL)
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last = s; s++;
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return (char*)last;
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}
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