1 files changed, 119 insertions, 0 deletions
diff --git a/libder/libder.c b/libder/libder.c
new file mode 100644
index 000000000000..2d52fedd62bd
--- /dev/null
+++ b/libder/libder.c
@@ -0,0 +1,119 @@
+/*-
+ * Copyright (c) 2024 Kyle Evans <kevans@FreeBSD.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include "libder_private.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+
+/*
+ * Sets up the context, returns NULL on error.
+ */
+struct libder_ctx *
+libder_open(void)
+{
+	struct libder_ctx *ctx;
+
+	ctx = malloc(sizeof(*ctx));
+	if (ctx == NULL)
+		return (NULL);
+
+	/* Initialize */
+	ctx->error = LDE_NONE;
+	ctx->buffer_size = 0;
+	ctx->verbose = 0;
+	ctx->normalize = LIBDER_NORMALIZE_ALL;
+	ctx->strict = true;
+	ctx->abort = 0;
+
+	return (ctx);
+}
+
+void
+libder_abort(struct libder_ctx *ctx)
+{
+
+	ctx->abort = 1;
+}
+
+LIBDER_PRIVATE size_t
+libder_get_buffer_size(struct libder_ctx *ctx)
+{
+
+	if (ctx->buffer_size == 0) {
+		long psize;
+
+		psize = sysconf(_SC_PAGESIZE);
+		if (psize <= 0)
+			psize = 4096;
+
+		ctx->buffer_size = psize;
+	}
+
+	return (ctx->buffer_size);
+}
+
+uint64_t
+libder_get_normalize(struct libder_ctx *ctx)
+{
+
+	return (ctx->normalize);
+}
+
+/*
+ * Set the normalization flags; returns the previous value.
+ */
+uint64_t
+libder_set_normalize(struct libder_ctx *ctx, uint64_t nmask)
+{
+	uint64_t old = ctx->normalize;
+
+	ctx->normalize = (nmask & LIBDER_NORMALIZE_ALL);
+	return (old);
+}
+
+bool
+libder_get_strict(struct libder_ctx *ctx)
+{
+
+	return (ctx->strict);
+}
+
+bool
+libder_set_strict(struct libder_ctx *ctx, bool strict)
+{
+	bool oval = ctx->strict;
+
+	ctx->strict = strict;
+	return (oval);
+}
+
+int
+libder_get_verbose(struct libder_ctx *ctx)
+{
+
+	return (ctx->verbose);
+}
+
+int
+libder_set_verbose(struct libder_ctx *ctx, int verbose)
+{
+	int oval = ctx->verbose;
+
+	ctx->verbose = verbose;
+	return (oval);
+}
+
+void
+libder_close(struct libder_ctx *ctx)
+{
+
+	if (ctx == NULL)
+		return;
+
+	free(ctx);
+}
+