--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/util.c	Tue Jul 12 20:20:51 2022 +0200
@@ -0,0 +1,187 @@
+/*
+ * util.c -- miscellaneous utilities
+ *
+ * Copyright (c) 2021 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/stat.h>
+#include <assert.h>
+#include <err.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "util.h"
+
+void *
+util_malloc(size_t size)
+{
+	void *ret;
+
+	if (!(ret = malloc(size)))
+		err(1, "malloc");
+
+	return ret;
+}
+
+void *
+util_calloc(size_t n, size_t size)
+{
+	void *ret;
+
+	if (!(ret = calloc(n, size)))
+		err(1, "calloc");
+
+	return ret;
+}
+
+void *
+util_realloc(void *ptr, size_t size)
+{
+	void *ret;
+
+	if (!(ret = realloc(ptr, size)) && size)
+		err(1, "realloc");
+
+	return ret;
+}
+
+void *
+util_memdup(const void *ptr, size_t size)
+{
+	void *ret;
+
+	if (!(ret = malloc(size)))
+		err(1, "malloc");
+
+	return memcpy(ret, ptr, size);
+}
+
+char *
+util_strdup(const char *src)
+{
+	char *ret;
+
+	if (!(ret = strdup(src)))
+		err(1, "strdup");
+
+	return ret;
+}
+
+char *
+util_strndup(const char *src, size_t n)
+{
+	assert(src);
+
+	char *ret;
+
+	if (!(ret = strndup(src, n)))
+		err(1, "strndup");
+
+	return ret;
+}
+
+char *
+util_basename(const char *str)
+{
+	static char ret[PATH_MAX];
+	char tmp[PATH_MAX];
+
+	strlcpy(tmp, str, sizeof (tmp));
+	strlcpy(ret, basename(tmp), sizeof (ret));
+
+	return ret;
+}
+
+char *
+util_dirname(const char *str)
+{
+	static char ret[PATH_MAX];
+	char tmp[PATH_MAX];
+
+	strlcpy(tmp, str, sizeof (tmp));
+	strlcpy(ret, dirname(tmp), sizeof (ret));
+
+	return ret;
+}
+
+FILE *
+util_fmemopen(void *buf, size_t size, const char *mode)
+{
+	FILE *fp;
+
+	if (!(fp = fmemopen(buf, size, mode)))
+		err(1, "fmemopen");
+
+	return fp;
+}
+
+char *
+util_printf(char *buf, size_t bufsz, const char *fmt, ...)
+{
+	assert(buf);
+	assert(bufsz);
+	assert(fmt);
+
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(buf, bufsz, fmt, ap);
+	va_end(ap);
+
+	return buf;
+}
+
+char *
+util_read(const char *path)
+{
+	int fd;
+	struct stat st;
+	char *ret;
+
+	if ((fd = open(path, O_RDONLY)) < 0)
+		return NULL;
+	if (fstat(fd, &st) < 0)
+		return close(fd), NULL;
+
+	ret = util_calloc(1, st.st_size + 1);
+
+	if (read(fd, ret, st.st_size) != st.st_size) {
+		free(ret);
+		ret = NULL;
+	}
+
+	close(fd);
+
+	return ret;
+}
+
+const char *
+util_path(const char *filename)
+{
+	assert(filename);
+
+	/* Build path to the template file. */
+	static char path[PATH_MAX];
+
+	//snprintf(path, sizeof (path), "%s/%s", config.themedir, filename);
+
+	return path;
+}