Initial import

libc/alg/critbit0_insert.c

@@ -0,0 +1,35 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ This program is free software; you can redistribute it and/or modify         │
+│ it under the terms of the GNU General Public License as published by         │
+│ the Free Software Foundation; version 2 of the License.                      │
+│                                                                              │
+│ This program is distributed in the hope that it will be useful, but          │
+│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
+│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
+│ General Public License for more details.                                     │
+│                                                                              │
+│ You should have received a copy of the GNU General Public License            │
+│ along with this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/alg/alg.h"
+#include "libc/alg/internal.h"
+#include "libc/mem/mem.h"
+#include "libc/str/str.h"
+
+/**
+ * Inserts 𝑢 into 𝑡.
+ * @param t tree
+ * @param u NUL-terminated string
+ * @return true if 𝑡 was mutated
+ * @note h/t djb and agl
+ */
+bool critbit0_insert(struct critbit0 *t, const char *u) {
+  size_t ulen = strlen(u);
+  return critbit0_emplace(t, memcpy(malloc(ulen + 1), u, ulen + 1), ulen);
+}