lnk commit front code

include/oss_sdk/aos_buf.h

@@ -0,0 +1,67 @@
+#ifndef LIBAOS_BUF_H
+#define LIBAOS_BUF_H
+
+#include "aos_define.h"
+#include "aos_list.h"
+
+AOS_CPP_START
+
+typedef struct {
+    aos_list_t node;
+    uint8_t *pos;
+    uint8_t *last;
+    uint8_t *start;
+    uint8_t *end;
+} aos_buf_t;
+
+typedef struct {
+    aos_list_t node;
+    int64_t file_pos;
+    int64_t file_last;
+    apr_file_t *file;
+    uint32_t owner:1;
+} aos_file_buf_t;
+
+aos_buf_t *aos_create_buf(aos_pool_t *p, int size);
+#define aos_buf_size(b) (b->last - b->pos)
+
+aos_file_buf_t *aos_create_file_buf(aos_pool_t *p);
+
+aos_buf_t *aos_buf_pack(aos_pool_t *p, const void *data, int size);
+
+int64_t aos_buf_list_len(aos_list_t *list);
+
+char *aos_buf_list_content(aos_pool_t *p, aos_list_t *list);
+
+void aos_buf_append_string(aos_pool_t *p, aos_buf_t *b, const char *str, int len);
+
+/**
+ * @param fb file_pos, file_last equal file_size.
+ * @return AOSE_OK success, other failure.
+ */ 
+int aos_open_file_for_read(aos_pool_t *p, const char *path, aos_file_buf_t *fb);
+
+int aos_open_file_for_all_read(aos_pool_t *p, const char *path, aos_file_buf_t *fb);
+
+int aos_open_file_for_range_read(aos_pool_t *p, const char *path, 
+                                 int64_t file_pos, int64_t file_last, 
+                                 aos_file_buf_t *fb);
+
+/**
+ * create the file if not there, truncate if file exists. 
+ * @param fb not check file_pos, file_last.
+ * @return AOSE_OK success, other failure.
+ */
+int aos_open_file_for_write(aos_pool_t *p, const char *path, aos_file_buf_t *fb);
+
+/**
+ * create the file if not there.
+ * @param fb not check file_pos, file_last.
+ * @return AOSE_OK success, other failure.
+ */
+int aos_open_file_for_write_notrunc(aos_pool_t *p, const char *path, aos_file_buf_t *fb);
+
+AOS_CPP_END
+
+#endif
+