Update

file_reader.h

@@ -0,0 +1,58 @@
+#ifndef _UTILS_FILE_READER_H
+#define _UTILS_FILE_READER_H
+#include <stdint.h>
+#include <stdio.h>
+#if __cplusplus
+extern "C" {
+#endif
+typedef struct file_reader_file file_reader_file;
+/**
+ * @brief Create a reader from a stream
+ * @param f File stream
+ * @param endian 0 if little endian otherwise big endian
+ * @return the reader, NULL if OOM or stream is NULL.
+*/
+file_reader_file* create_file_reader(FILE* f, unsigned char endian);
+/**
+ * @brief Free a reader. This will not close stream.
+ * @param f the pointer to reader struct
+*/
+void free_file_reader(file_reader_file* f);
+/**
+ * @brief Set endian for reader
+ * @param f reader
+ * @param endian 0 if little endian otherwise big endian
+*/
+void set_file_reader_endian(file_reader_file* f, unsigned char endian);
+/**
+ * @brief Read int32 from reader
+ * @param f reader
+ * @param re result
+ * @return 0 if successed otherwise 1
+*/
+int file_reader_read_int32(file_reader_file* f, int32_t* re);
+/**
+ * @brief Read uint32 from reader
+ * @param f reader
+ * @param re result
+ * @return 0 if successed otherwise 1
+*/
+int file_reader_read_uint32(file_reader_file* f, uint32_t* re);
+/**
+ * @brief Read int64 from reader
+ * @param f reader
+ * @param re result
+ * @return 0 if successed otherwise 1
+*/
+int file_reader_read_int64(file_reader_file* f, int64_t* re);
+/**
+ * @brief Read 0 terminal string from reader
+ * @param f reader
+ * @param buf Result. Need free memory by using free.
+ * @return 0 if successed otherwise 1
+*/
+int file_reader_read_str(file_reader_file* f, char** buf);
+#if __cplusplus
+}
+#endif
+#endif