[geodb] Adding sparkey dependency

src/sparkey/endiantools.h

@@ -0,0 +1,79 @@
+/*
+* Copyright (c) 2012-2013 Spotify AB
+*
+* Licensed under the Apache License, Version 2.0 (the "License"); you may not
+* use this file except in compliance with the License. You may obtain a copy of
+* the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+* License for the specific language governing permissions and limitations under
+* the License.
+*/
+#ifndef ENDIANTOOLS_H_INCLUDED
+#define ENDIANTOOLS_H_INCLUDED
+
+#include <stdio.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#include "sparkey.h"
+
+typedef union {
+  uint32_t i;
+  uint8_t c[4];
+} endian_union;
+
+/**
+ * Writes count bytes of buf to a file with file descriptor fd
+ * @param fd file descriptor of a file to write to.
+ * @param buf bytes to write to file.
+ * Must point to a block of memory at least count long.
+ * @param count number of bytes to write.
+ * @returns SPARKEY_SUCCESS if all goes well, otherwise a sparkey error code.
+ */
+sparkey_returncode write_full(int fd, uint8_t *buf, size_t count);
+
+/**
+ * Write a 32 bit value to buf in little endian.
+ * @param buf buf to write to. Must be at least 4 bytes long.
+ * @param value the value to write.
+ */
+void write_little_endian32(uint8_t *buf, uint32_t value);
+
+/**
+ * Write a 32 bit value to file in little endian.
+ * @param fd file descriptor of file open for write.
+ * @param value the value to write.
+ * @returns SPARKEY_SUCCESS if all goes well, a sparkey error if the
+ * writing to file fails.
+ */
+sparkey_returncode fwrite_little_endian32(int fd, uint32_t value);
+
+/**
+ * Write a 64 bit value to buf in little endian.
+ * @param buf buf to write to. Must be at least 8 bytes long.
+ * @param value the value to write.
+ */
+void write_little_endian64(uint8_t *buf, uint64_t value);
+
+/**
+ * Write a 64 bit value to file in little endian.
+ * @param fd file descriptor of file open for write.
+ * @param value the value to write.
+ * @returns SPARKEY_SUCCESS if all goes well, a sparkey error if the
+ * writing to file fails.
+ */
+sparkey_returncode fwrite_little_endian64(int fd, uint64_t value);
+uint32_t read_little_endian32(const uint8_t * array, uint64_t pos);
+uint64_t read_little_endian64(const uint8_t * array, uint64_t pos);
+sparkey_returncode correct_endian_platform();
+
+sparkey_returncode fread_little_endian32(FILE *fp, uint32_t *res);
+sparkey_returncode fread_little_endian64(FILE *fp, uint64_t *res);
+
+#endif /* ENDIAN_H_INCLUDED */
+