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libc/streams: Ensure the different stream type has the common layout

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Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao
2022-11-24 17:38:37 +08:00
committed by archer
parent 869c93638d
commit 5ee1da4211
1 changed files with 11 additions and 8 deletions
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19
include/nuttx/streams.h
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@@ -61,18 +61,18 @@ typedef CODE int (*lib_flush_t)(FAR struct lib_outstream_s *this);
struct lib_instream_s
{
lib_getc_t get; /* Get one character from the instream */
int nget; /* Total number of characters gotten. Written
* by get method, readable by user */
lib_getc_t get; /* Get one character from the instream */
};
struct lib_outstream_s
{
int nput; /* Total number of characters put. Written
* by put method, readable by user */
lib_putc_t put; /* Put one character to the outstream */
lib_puts_t puts; /* Writes the string to the outstream */
lib_flush_t flush; /* Flush any buffered characters in the outstream */
int nput; /* Total number of characters put. Written
* by put method, readable by user */
};
/* Seek-able streams */
@@ -84,25 +84,28 @@ typedef CODE off_t (*lib_siseek_t)(FAR struct lib_sistream_s *this,
struct lib_sostream_s;
typedef CODE void (*lib_soputc_t)(FAR struct lib_sostream_s *this, int ch);
typedef CODE int (*lib_soputs_t)(FAR struct lib_sostream_s *this,
FAR const void *buf, int len);
typedef CODE int (*lib_soflush_t)(FAR struct lib_sostream_s *this);
typedef CODE off_t (*lib_soseek_t)(FAR struct lib_sostream_s *this,
off_t offset, int whence);
struct lib_sistream_s
{
lib_sigetc_t get; /* Get one character from the instream */
lib_siseek_t seek; /* Seek to a position in the instream */
int nget; /* Total number of characters gotten. Written
* by get method, readable by user */
lib_sigetc_t get; /* Get one character from the instream */
lib_siseek_t seek; /* Seek to a position in the instream */
};
struct lib_sostream_s
{
lib_soputc_t put; /* Put one character to the outstream */
lib_soflush_t flush; /* Flush any buffered characters in the outstream */
lib_soseek_t seek; /* Seek a position in the output stream */
int nput; /* Total number of characters put. Written
* by put method, readable by user */
lib_soputc_t put; /* Put one character to the outstream */
lib_soputs_t puts; /* Writes the string to the outstream */
lib_soflush_t flush; /* Flush any buffered characters in the outstream */
lib_soseek_t seek; /* Seek a position in the output stream */
};
/* These are streams that operate on a fixed-sized block of memory */