Remove char_v, proper custom function naming

utils.c

@@ -120,77 +120,3 @@ int mkpath(char* file_path, mode_t mode)
 
     return 0;
 }
-
-CharVec char_v_new(size_t cap)
-{
-    CharVec v;
-    v.buf = NULL;
-    v.len = 0;
-    v.cap = cap;
-
-    return v;
-}
-
-void char_v_free(CharVec *v)
-{
-    if (v->buf) {
-        free(v->buf);
-        v->buf = NULL;
-        v->len = 0;
-    }
-}
-
-static void char_v_create(CharVec *v)
-{
-    if (v->buf)
-        return;
-
-    if (!(v->buf = malloc(v->cap * sizeof(*v->buf)))) {
-        PRINTINTERR(FUNCFAILED("malloc"), ERRNOS);
-        abort();
-    }
-
-    v->buf[0] = '\0';
-    v->len++;
-}
-
-static void char_v_check_cap(CharVec *v, size_t len_inc)
-{
-    void *new_buf;
-    size_t new_len = v->len + len_inc;
-
-    if (new_len < v->cap)
-        return;
-
-    while (new_len >= v->cap)
-        v->cap *= 2;
-
-    if (!(new_buf = realloc(v->buf, v->cap * sizeof(*v->buf)))) {
-        free(v->buf);
-        PRINTINTERR(FUNCFAILED("realloc"), ERRNOS);
-        abort();
-    }
-
-    v->buf = new_buf;
-}
-
-void char_v_append(CharVec *v, char c)
-{
-    char_v_create(v);
-    char_v_check_cap(v, 1);
-
-    v->buf[v->len - 1] = c;
-    v->buf[v->len] = '\0';
-    v->len++;
-}
-
-void char_v_append_str(CharVec *v, char *s)
-{
-    size_t len = strlen(s);
-
-    char_v_create(v);
-    char_v_check_cap(v, len);
-
-    memcpy(v->buf + v->len * sizeof(*v->buf), s, len + 1);
-    v->len += len;
-}