split.c

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#include <stdlib.h>
#include <string.h>
 
#include "split.h"
 
void SplitList_Initialize(SplitList* list)
{
    if (list != NULL)
    {
        list->strings = NULL;
        list->strings_count = 0;
    }
}
 
void SplitList_Clear(SplitList* list)
{
    if (list != NULL)
    {
        free(list->strings);
        list->strings = NULL;
        list->strings_count = 0;
    }
}
 
void SplitList_AddString(SplitList* list, const char* s)
{
    if (list != NULL && s != NULL)
    {
        const char** new_list = NULL;
        if (list->strings == NULL)
        {
            new_list = calloc(1, sizeof(char*));
        }
        else
        {
            size_t newSize = (list->strings_count + 1) * sizeof(const char*);
            new_list = realloc(list->strings, newSize);
        }
        if (new_list != NULL)
        {
            list->strings = new_list;
            list->strings[list->strings_count] = s;
            list->strings_count++;
        }
    }
}
 
// split()
void split(char* s, const char* splitChars, SplitList* components)
{
    if (s != NULL && components != NULL)
    {
        SplitList_Clear(components);
        if (splitChars == NULL || *splitChars == '\0')
        {
            splitChars = " ";
        }
        char* work = s;
        for (;;)
        {
            size_t foundIndex = strcspn(work, splitChars);
            if (foundIndex < strlen(work))
            {
                work[foundIndex] = '\0';
                SplitList_AddString(components, work);
                work += foundIndex + 1;
            }
            else
            {
                SplitList_AddString(components, work);
                break;
            }
        }
    }
}