start adding low level functionality to help with future development

src/string/string.c

@@ -0,0 +1,74 @@
+#include "string.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+const char *WHITE_SPACE = " \t\n\r\f\v";
+
+char *cloneString(char *str)
+{
+    if (str == NULL)
+    {
+        return NULL;
+    }
+
+    size_t len = strlen(str);
+    char *clone = malloc((len + 1) * sizeof(char));
+
+    if (clone == NULL)
+    {
+        return NULL;
+    }
+
+    strcpy(clone, str);
+    return clone;
+}
+
+void stripString(char *str, const char *chars)
+{
+    if (str == NULL || chars == NULL)
+    {
+        return;
+    }
+
+    size_t len = strlen(str);
+    size_t charsLen = strlen(chars);
+
+    if (len == 0 || charsLen == 0)
+    {
+        return;
+    }
+    size_t i = 0;
+    while (i < len)
+    {
+        if (strchr(chars, str[i]) == NULL)
+        {
+            break;
+        }
+        i++;
+    }
+
+    if (i > 0)
+    {
+        memmove(str, str + i, len - i + 1);
+    }
+    size_t j = len-i - 1;
+    while (j > 0)
+    {
+        if (strchr(chars, str[j]) == NULL)
+        {
+            break;
+        }
+        j--;
+    }
+
+    if (j < len)
+    {
+        str[j + 1] = '\0';
+    }
+
+    str = realloc(str, (j + 1) * sizeof(char));
+
+    return;
+}