added strcat and strjoin to strlib.

include/lib/string.h

@@ -104,4 +104,8 @@ char *strtok(register char *string, const char *separators);
 
 int strreplace(char* str, char replace, char replacement);
 
+char *strcat(char *ret, register const char *s2);
+
+char* strjoin(char* strings[], char* seperator, int count);
+
 #endif

src/lib/string.c

@@ -146,3 +146,36 @@ int strreplace(char* str, char replace, char replacement) {
 	}
 	return replaces;
 }
+
+char *strcat(char *ret, register const char *s2) {
+    register char *s1 = ret;
+
+    while (*s1++ != '\0')
+        /* EMPTY */ ;
+    s1--;
+    while ((*s1++ = *s2++))
+        /* EMPTY */ ;
+    return ret;
+}
+
+char* strjoin(char* strings[], char* seperator, int count) {
+    char* str = NULL;             /* Pointer to the joined strings  */
+    unsigned int total_length = 0;      /* Total length of joined strings */
+    int i = 0;                    /* Loop counter                   */
+
+    /* Find total length of joined strings */
+    for (i = 0; i < count; i++) total_length += strlen(strings[i]);
+    total_length++;     /* For joined string terminator */
+    total_length += strlen(seperator) * (count - 1); // for seperators
+
+    str = (char*) malloc(total_length);  /* Allocate memory for joined strings */
+    str[0] = '\0';                      /* Empty string we can append to      */
+
+    /* Append all the strings */
+    for (i = 0; i < count; i++) {
+        strcat(str, strings[i]);
+        if (i < (count - 1)) strcat(str, seperator);
+    }
+
+    return str;
+}