libs/dolphin/src/support/string.c


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#include <charPipeline/structures/dolphinString.h>

u8 Strcat(char* str1, char* str2, char* dst) {
    char* srcCursor = str1;
    char* dstCursor = dst;;

    if (!dst) {
        return 0;
    }
    if (!str1) {
        return 0;
    }
    if (!str2) {
        return 0;
    }

    while ((s8)*srcCursor != 0) {
        *dstCursor = *srcCursor;
        dstCursor++;
        srcCursor++;
    }

    srcCursor = str2;
    while ((s8)*srcCursor != 0) {
        *dstCursor = *srcCursor;
        dstCursor++;
        srcCursor++;
    }

    *dstCursor = 0;
    return 1;
}

void Strcpy(char* dst, char* src) {
    do {
        *dst = *src;
        dst++;
        src++;
    } while ((s8)*src != 0);
}

s8 Strcmp(char* str1, char* str2) {
    char* cursor1 = str1;
    char* cursor2 = str2;
    while (1) {
        if ((s8)*cursor1 < (s8)*cursor2) {
            return 1;
        }
        if ((s8)*cursor1 > (s8)*cursor2) {
            return -1;
        }
        cursor1++;
        cursor2++;
        if ((s8)*cursor1 == 0 || (s8)*cursor2 == 0) {
            return 0;
        }
    }
}

u32 Strlen(char* str) {
    char* cursor = str;
    u32 counter = 0;

    if (!str) {
        return 0;
    }

    while ((s8)*cursor != 0) {
        cursor++;
        counter++;
    }

    return counter;
}