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1 files changed, 70 insertions, 0 deletions

diff --git a/url.c b/url.c
new file mode 100644
index 0000000..b4c30a6
--- /dev/null
+++ b/url.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2023, Vincent Douillet <vincent@vdouillet.fr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors
+ * may be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include "url.h"
+
+size_t
+url_build(char *dst, size_t dst_size, int count,...)
+{
+	va_list path_list;
+	const char *path;
+	int 	path_index;
+	size_t 	w_size;
+
+	dst[0] = '\0';
+	w_size = 0;
+	va_start(path_list, count);
+	for (path_index = 0; path_index < count; path_index++) {
+		/* no more space in dst buffer */
+		if (w_size >= dst_size)
+			break;
+
+		path = va_arg(path_list, char *);
+
+		assert(path != NULL);
+		if (path[0] == '\0')
+			continue;
+
+		if (path[0] == '.' && path[1] == '\0')
+			continue;
+
+		if (path[0] != '/' && dst[w_size - 1] != '/')
+			w_size = strlcat(dst, "/", dst_size);
+
+		w_size = strlcat(dst, path, dst_size);
+	}
+
+	va_end(path_list);
+	return w_size;
+}