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Code Issues Projects Releases Wiki Activity

fix(fsdrv) minor fs issue (#2682)

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* fix(fs): replace all tab to space and other minor style fix

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

* fix(extra/fs): rename lv_fs_libs.h to lv_fsdrv.h

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

* fix(extra/fs/stdio): fix the wrong directory path in fs_dir_open

and remove the duplicated or platform specific code

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

* fix(extra/fs/posix): implement in fs_dir_read

and fix the wrong directory path in fs_dir_open

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

* fix(extra/fs/posix): return file handle directly to avoid malloc

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2021-10-18 06:00:47 -05:00 committed by GitHub
parent 1babc37156
commit 608d06e47a
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 471 additions and 504 deletions
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2
docs/libs/fs.md → docs/libs/fsdrv.md
View File

@ -1,6 +1,6 @@
```eval_rst
.. include:: /header.rst
:github_url: |github_link_base|/libs/fs.md
:github_url: |github_link_base|/libs/fsdrv.md
```
# File System Interfaces

38
examples/porting/lv_port_fs_template.c
View File

@ -25,17 +25,17 @@
**********************/
static void fs_init(void);
static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_open(lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence););
static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence););
static lv_fs_res_t fs_size(lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path);
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn);
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * rddir_p);
static lv_fs_res_t fs_dir_open(lv_fs_drv_t * drv, void * rddir_p, const char *path);
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * rddir_p, char * fn);
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * rddir_p);
/**********************
* STATIC VARIABLES
@ -103,7 +103,7 @@ static void fs_init(void)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return a file descriptor or NULL on error
*/
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
@ -131,10 +131,10 @@ static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
* @param file_p pointer to a file_t variable. (opened with fs_open)
* @return LV_FS_RES_OK: no error or any error from @lv_fs_res_t enum
*/
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
@ -152,7 +152,7 @@ static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error or any error from @lv_fs_res_t enum
*/
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
@ -182,12 +182,12 @@ static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf,
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
* @param file_p pointer to a file_t variable. (opened with fs_open )
* @param pos the new position of read write pointer
* @param whence tells from where to interpret the `pos`. See @lv_fs_whence_t
* @return LV_FS_RES_OK: no error or any error from @lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
@ -202,7 +202,7 @@ static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_f
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error or any error from @lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
@ -217,7 +217,7 @@ static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
* @param path path to a directory
* @return pointer to the directory read descriptor or NULL on error
*/
static void * fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path)
static void * fs_dir_open(lv_fs_drv_t * drv, void * rddir_p, const char *path)
{
void * dir = NULL;
/*Add your code here*/
@ -233,7 +233,7 @@ static void * fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path)
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK: no error or any error from @lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn)
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * rddir_p, char *fn)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;
@ -248,7 +248,7 @@ static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn)
* @param rddir_p pointer to an initialized 'lv_fs_dir_t' variable
* @return LV_FS_RES_OK: no error or any error from @lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * rddir_p)
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * rddir_p)
{
lv_fs_res_t res = LV_FS_RES_NOT_IMP;

330
src/extra/libs/fs/lv_fs_stdio.c
View File

@ -1,330 +0,0 @@
/**
* @file lv_fs_stdio.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../../../lvgl.h"
#if LV_USE_FS_STDIO != '\0'
#include <stdio.h>
#include <errno.h>
#include <dirent.h>
#include <unistd.h>
#ifdef WIN32
#include <windows.h>
#endif
/*********************
* DEFINES
*********************/
#ifndef LV_FS_STDIO_PATH
# ifndef WIN32
# define LV_FS_STDIO_PATH "./" /*Project root*/
# else
# define LV_FS_STDIO_PATH ".\\" /*Project root*/
# endif
#endif /*LV_FS_STDIO_PATH*/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static void * fs_dir_open (lv_fs_drv_t * drv, const char *path);
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn);
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Register a driver for the File system interface
*/
void lv_fs_stdio_init(void)
{
/*---------------------------------------------------
* Register the file system interface in LittlevGL
*--------------------------------------------------*/
/* Add a simple drive to open images */
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
lv_fs_drv_init(&fs_drv);
/*Set up fields...*/
fs_drv.letter = LV_USE_FS_STDIO;
fs_drv.open_cb = fs_open;
fs_drv.close_cb = fs_close;
fs_drv.read_cb = fs_read;
fs_drv.write_cb = fs_write;
fs_drv.seek_cb = fs_seek;
fs_drv.tell_cb = fs_tell;
fs_drv.dir_close_cb = fs_dir_close;
fs_drv.dir_open_cb = fs_dir_open;
fs_drv.dir_read_cb = fs_dir_read;
lv_fs_drv_register(&fs_drv);
char cur_path[512];
getcwd(cur_path, sizeof(cur_path));
LV_LOG_INFO("STDIO file system is initialized with %s root directory.", cur_path);
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Open a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
{
(void) drv; /*Unused*/
errno = 0;
const char * flags = "";
if(mode == LV_FS_MODE_WR) flags = "wb";
else if(mode == LV_FS_MODE_RD) flags = "rb";
else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD)) flags = "rb+";
/*Make the path relative to the current directory (the projects root folder)*/
#ifndef WIN32
char buf[256];
sprintf(buf, LV_FS_STDIO_PATH "%s", path);
#else
char buf[256];
sprintf(buf, LV_FS_STDIO_PATH "%s", path);
#endif
FILE * f = fopen(buf, flags);
if(f == NULL) return NULL;
/*Be sure we are the beginning of the file*/
fseek(f, 0, SEEK_SET);
return f;
}
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
{
(void) drv; /*Unused*/
fclose(file_p);
return LV_FS_RES_OK;
}
/**
* Read data from an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param buf pointer to a memory block where to store the read data
* @param btr number of Bytes To Read
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
(void) drv; /*Unused*/
*br = fread(buf, 1, btr, file_p);
return LV_FS_RES_OK;
}
/**
* Write into a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param buf pointer to a buffer with the bytes to write
* @param btr Bytes To Write
* @param br the number of real written bytes (Bytes Written). NULL if unused.
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
(void) drv; /*Unused*/
*bw = fwrite(buf, 1, btw, file_p);
return LV_FS_RES_OK;
}
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
* @param pos the new position of read write pointer
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
{
(void) drv; /*Unused*/
fseek(file_p, pos, whence);
return LV_FS_RES_OK;
}
/**
* Give the position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
(void) drv; /*Unused*/
*pos_p = ftell(file_p);
return LV_FS_RES_OK;
}
#ifdef WIN32
static char next_fn[256];
#endif
/**
* Initialize a 'fs_read_dir_t' variable for directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to a 'fs_read_dir_t' variable
* @param path path to a directory
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
{
(void) drv; /*Unused*/
#ifndef WIN32
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_STDIO_PATH "/%s", path);
return opendir(buf);
#else
HANDLE d = INVALID_HANDLE_VALUE;
WIN32_FIND_DATA fdata;
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_PC_PATH "\\%s\\*", path);
strcpy(next_fn, "");
d = FindFirstFile(buf, &fdata);
do {
if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
continue;
} else {
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
sprintf(next_fn, "/%s", fdata.cFileName);
} else {
sprintf(next_fn, "%s", fdata.cFileName);
}
break;
}
} while(FindNextFileA(d, &fdata));
return d;
#endif
}
/**
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn)
{
(void) drv; /*Unused*/
#ifndef WIN32
struct dirent *entry;
do {
entry = readdir(dir_p);
if(entry) {
if(entry->d_type == DT_DIR) sprintf(fn, "/%s", entry->d_name);
else strcpy(fn, entry->d_name);
} else {
strcpy(fn, "");
}
} while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);
#else
strcpy(fn, next_fn);
strcpy(next_fn, "");
WIN32_FIND_DATA fdata;
if(FindNextFile(dir_p, &fdata) == false) return LV_FS_RES_OK;
do {
if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
continue;
} else {
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
sprintf(next_fn, "/%s", fdata.cFileName);
} else {
sprintf(next_fn, "%s", fdata.cFileName);
}
break;
}
} while(FindNextFile(dir_p, &fdata));
#endif
return LV_FS_RES_OK;
}
/**
* Close the directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p)
{
(void) drv; /*Unused*/
#ifndef WIN32
closedir(dir_p);
#else
FindClose(dir_p);
#endif
return LV_FS_RES_OK;
}
#endif /*LV_FS_FATFS*/

111
src/extra/libs/fs/lv_fs_fatfs.c → src/extra/libs/fsdrv/lv_fs_fatfs.c
View File

@ -24,15 +24,15 @@
**********************/
static void fs_init(void);
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static void * fs_dir_open (lv_fs_drv_t * drv, const char *path);
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn);
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p);
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static void * fs_dir_open(lv_fs_drv_t * drv, const char * path);
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * dir_p, char * fn);
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * dir_p);
/**********************
* STATIC VARIABLES
@ -46,7 +46,7 @@ static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p);
* GLOBAL FUNCTIONS
**********************/
void lv_fs_if_fatfs_init(void)
void lv_fs_fatfs_init(void)
{
/*----------------------------------------------------
* Initialize your storage device and File System
@ -54,12 +54,12 @@ void lv_fs_if_fatfs_init(void)
fs_init();
/*---------------------------------------------------
* Register the file system interface in LittlevGL
* Register the file system interface in LittlevGL
*--------------------------------------------------*/
/* Add a simple drive to open images */
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
lv_fs_drv_init(&fs_drv);
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
lv_fs_drv_init(&fs_drv);
/*Set up fields...*/
fs_drv.letter = LV_USE_FS_FATFS;
@ -91,13 +91,13 @@ static void fs_init(void)
/**
* Open a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
* @return pointer to FIL struct or NULL in case of fail
*/
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
{
LV_UNUSED(drv);
uint8_t flags = 0;
if(mode == LV_FS_MODE_WR) flags = FA_WRITE | FA_OPEN_ALWAYS;
@ -110,24 +110,24 @@ static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
FRESULT res = f_open(f, path, flags);
if(res == FR_OK) {
f_lseek(f, 0);
return f;
f_lseek(f, 0);
return f;
} else {
lv_mem_free(f);
return NULL;
return NULL;
}
}
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
* @param file_p pointer to a FIL variable. (opened with fs_open)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p)
{
LV_UNUSED(drv);
f_close(file_p);
lv_mem_free(file_p);
return LV_FS_RES_OK;
@ -136,15 +136,16 @@ static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
/**
* Read data from an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param file_p pointer to a FIL variable.
* @param buf pointer to a memory block where to store the read data
* @param btr number of Bytes To Read
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
LV_UNUSED(drv);
FRESULT res = f_read(file_p, buf, btr, (UINT*)br);
if(res == FR_OK) return LV_FS_RES_OK;
else return LV_FS_RES_UNKNOWN;
@ -153,7 +154,7 @@ static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32
/**
* Write into a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param file_p pointer to a FIL variable
* @param buf pointer to a buffer with the bytes to write
* @param btr Bytes To Write
* @param br the number of real written bytes (Bytes Written). NULL if unused.
@ -161,7 +162,8 @@ static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32
*/
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
FRESULT res = f_write(file_p, buf, btw, (UINT*)bw);
LV_UNUSED(drv);
FRESULT res = f_write(file_p, buf, btw, (UINT*)bw);
if(res == FR_OK) return LV_FS_RES_OK;
else return LV_FS_RES_UNKNOWN;
}
@ -169,24 +171,24 @@ static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf,
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
* @param file_p pointer to a FIL variable. (opened with fs_open )
* @param pos the new position of read write pointer
* @param whence only LV_SEEK_SET is supported
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
{
switch (whence)
{
LV_UNUSED(drv);
switch (whence) {
case LV_FS_SEEK_SET:
f_lseek(file_p, pos);
break;
case LV_FS_SEEK_CUR:
f_lseek(file_p, f_tell((FIL *)file_p) + pos);
f_lseek(file_p, f_tell(file_p) + pos);
break;
case LV_FS_SEEK_END:
f_lseek(file_p, f_size((FIL *)file_p) + pos);
f_lseek(file_p, f_size(file_p) + pos);
break;
default:
break;
@ -197,26 +199,27 @@ static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_f
/**
* Give the position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param file_p pointer to a FIL variable.
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
*pos_p = f_tell(((FIL *)file_p));
LV_UNUSED(drv);
*pos_p = f_tell(file_p);
return LV_FS_RES_OK;
}
/**
* Initialize a 'fs_read_dir_t' variable for directory reading
* Initialize a 'DIR' variable for directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to a 'fs_read_dir_t' variable
* @param path path to a directory
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
* @return pointer to an initialized 'DIR' variable
*/
static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
static void * fs_dir_open(lv_fs_drv_t * drv, const char * path)
{
LV_UNUSED(drv);
DIR * d = lv_mem_alloc(sizeof(DIR));
if(d == NULL) return NULL;
@ -232,25 +235,26 @@ static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @param dir_p pointer to an initialized 'DIR' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn)
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * dir_p, char * fn)
{
FRESULT res;
FILINFO fno;
fn[0] = '\0';
LV_UNUSED(drv);
FRESULT res;
FILINFO fno;
fn[0] = '\0';
do {
res = f_readdir(dir_p, &fno);
if(res != FR_OK) return LV_FS_RES_UNKNOWN;
res = f_readdir(dir_p, &fno);
if(res != FR_OK) return LV_FS_RES_UNKNOWN;
if(fno.fattrib & AM_DIR) {
fn[0] = '/';
strcpy(&fn[1], fno.fname);
}
else strcpy(fn, fno.fname);
if(fno.fattrib & AM_DIR) {
fn[0] = '/';
strcpy(&fn[1], fno.fname);
}
else strcpy(fn, fno.fname);
} while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);
@ -260,12 +264,13 @@ static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn)
/**
* Close the directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @param dir_p pointer to an initialized 'DIR' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p)
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * dir_p)
{
f_closedir(dir_p);
LV_UNUSED(drv);
f_closedir(dir_p);
lv_mem_free(dir_p);
return LV_FS_RES_OK;
}

168
src/extra/libs/fs/lv_fs_posix.c → src/extra/libs/fsdrv/lv_fs_posix.c
View File

@ -12,10 +12,11 @@
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#ifndef WIN32
#include <dirent.h>
#include <unistd.h>
#include <stdio.h>
#ifdef WIN32
#else
#include <windows.h>
#endif
@ -28,7 +29,7 @@
# else
# define LV_FS_POSIX_PATH ".\\" /*Project root*/
# endif
#endif /*LV_FS_PATH*/
#endif /*LV_FS_POSIX_PATH*/
/**********************
* TYPEDEFS
@ -37,15 +38,15 @@
/**********************
* STATIC PROTOTYPES
**********************/
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static void * fs_dir_open (lv_fs_drv_t * drv, const char *path);
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn);
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p);
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static void * fs_dir_open(lv_fs_drv_t * drv, const char * path);
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * dir_p, char * fn);
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * dir_p);
/**********************
* STATIC VARIABLES
@ -69,7 +70,7 @@ void lv_fs_posix_init(void)
*--------------------------------------------------*/
/* Add a simple drive to open images */
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
lv_fs_drv_init(&fs_drv);
/*Set up fields...*/
@ -95,14 +96,13 @@ void lv_fs_posix_init(void)
/**
* Open a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
* @return a file handle or -1 in case of fail
*/
static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
{
(void) drv; /*Unused*/
LV_UNUSED(drv);
errno = 0;
uint32_t flags = 0;
@ -114,59 +114,50 @@ static void * fs_open (lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
char buf[256];
sprintf(buf, LV_FS_POSIX_PATH "%s", path);
int f = open(buf, flags);
if(f < 0) return NULL;
/*Be sure we are the beginning of the file*/
lseek(f, 0, SEEK_SET);
int * fp = lv_mem_alloc(sizeof(int));
if(fp == NULL) return NULL;
*fp = f;
return fp;
return (void *)(lv_uintptr_t)f;
}
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
* @param file_p a file handle. (opened with fs_open)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p)
{
(void) drv; /*Unused*/
int * fp = file_p;
close(*fp);
lv_mem_free(file_p);
LV_UNUSED(drv);
close((lv_uintptr_t)file_p);
return LV_FS_RES_OK;
}
/**
* Read data from an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param file_p a file handle variable.
* @param buf pointer to a memory block where to store the read data
* @param btr number of Bytes To Read
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
(void) drv; /*Unused*/
int * fp = file_p;
*br = read(*fp, buf, btr);
LV_UNUSED(drv);
*br = read((lv_uintptr_t)file_p, buf, btr);
return LV_FS_RES_OK;
}
/**
* Write into a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable
* @param file_p a file handle variable
* @param buf pointer to a buffer with the bytes to write
* @param btr Bytes To Write
* @param br the number of real written bytes (Bytes Written). NULL if unused.
@ -174,45 +165,41 @@ static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32
*/
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
(void) drv; /*Unused*/
int * fp = file_p;
*bw = write(*fp, buf, btw);
LV_UNUSED(drv);
*bw = write((lv_uintptr_t)file_p, buf, btw);
return LV_FS_RES_OK;
}
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
* @param file_p a file handle variable. (opened with fs_open )
* @param pos the new position of read write pointer
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
{
(void) drv; /*Unused*/
int * fp = file_p;
lseek(*fp, pos, whence);
LV_UNUSED(drv);
lseek((lv_uintptr_t)file_p, pos, whence);
return LV_FS_RES_OK;
}
/**
* Give the position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a file_t variable.
* @param file_p a file handle variable.
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
(void) drv; /*Unused*/
int * fp = file_p;
*pos_p = lseek(*fp, 0, SEEK_CUR);
LV_UNUSED(drv);
*pos_p = lseek((lv_uintptr_t)file_p, 0, SEEK_CUR);
return LV_FS_RES_OK;
}
#ifdef WIN32
static char next_fn[256];
#endif
@ -220,18 +207,17 @@ static char next_fn[256];
/**
* Initialize a 'fs_read_dir_t' variable for directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to a 'fs_read_dir_t' variable
* @param path path to a directory
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
* @return pointer to an initialized 'DIR' or 'HANDLE' variable
*/
static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
static void * fs_dir_open(lv_fs_drv_t * drv, const char * path)
{
LV_UNUSED(drv);
#ifndef WIN32
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_POSIX_PATH "/%s", path);
sprintf(buf, LV_FS_POSIX_PATH "%s", path);
return opendir(buf);
#else
HANDLE d = INVALID_HANDLE_VALUE;
@ -239,7 +225,7 @@ static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_PC_PATH "\\%s\\*", path);
sprintf(buf, LV_FS_POSIX_PATH "%s\\*", path);
strcpy(next_fn, "");
d = FindFirstFile(buf, &fdata);
@ -247,9 +233,7 @@ static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
continue;
} else {
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
sprintf(next_fn, "/%s", fdata.cFileName);
} else {
sprintf(next_fn, "%s", fdata.cFileName);
@ -266,61 +250,57 @@ static void * fs_dir_open (lv_fs_drv_t * drv, const char *path)
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @param dir_p pointer to an initialized 'DIR' or 'HANDLE' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * dir_p, char *fn)
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * dir_p, char * fn)
{
LV_UNUSED(drv);
LV_UNUSED(dir_p);
LV_UNUSED(fn);
// #ifndef WIN32
// struct dirent *entry;
// do {
// entry = readdir(dir_p);
#ifndef WIN32
struct dirent *entry;
do {
entry = readdir(dir_p);
// if(entry) {
// if(entry->d_type == DT_DIR) sprintf(fn, "/%s", entry->d_name);
// else strcpy(fn, entry->d_name);
// } else {
// strcpy(fn, "");
// }
// } while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);
// #else
// strcpy(fn, next_fn);
if(entry) {
if(entry->d_type == DT_DIR) sprintf(fn, "/%s", entry->d_name);
else strcpy(fn, entry->d_name);
} else {
strcpy(fn, "");
}
} while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);
#else
strcpy(fn, next_fn);
// strcpy(next_fn, "");
// WIN32_FIND_DATA fdata;
strcpy(next_fn, "");
WIN32_FIND_DATA fdata;
// if(FindNextFile(dir_p, &fdata) == false) return LV_FS_RES_OK;
// do {
// if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
// continue;
// } else {
if(FindNextFile(dir_p, &fdata) == false) return LV_FS_RES_OK;
do {
if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
continue;
} else {
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
sprintf(next_fn, "/%s", fdata.cFileName);
} else {
sprintf(next_fn, "%s", fdata.cFileName);
}
break;
}
} while(FindNextFile(dir_p, &fdata));
// if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
// {
// sprintf(next_fn, "/%s", fdata.cFileName);
// } else {
// sprintf(next_fn, "%s", fdata.cFileName);
// }
// break;
// }
// } while(FindNextFile(dir_p, &fdata));
// #endif
#endif
return LV_FS_RES_OK;
}
/**
* Close the directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'fs_read_dir_t' variable
* @param dir_p pointer to an initialized 'DIR' or 'HANDLE' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * dir_p)
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * dir_p)
{
LV_UNUSED(drv);
#ifndef WIN32

314
src/extra/libs/fsdrv/lv_fs_stdio.c Normal file
View File

@ -0,0 +1,314 @@
/**
* @file lv_fs_stdio.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../../../lvgl.h"
#if LV_USE_FS_STDIO != '\0'
#include <stdio.h>
#include <errno.h>
#ifndef WIN32
#include <dirent.h>
#include <unistd.h>
#else
#include <windows.h>
#endif
/*********************
* DEFINES
*********************/
#ifndef LV_FS_STDIO_PATH
# ifndef WIN32
# define LV_FS_STDIO_PATH "./" /*Project root*/
# else
# define LV_FS_STDIO_PATH ".\\" /*Project root*/
# endif
#endif /*LV_FS_STDIO_PATH*/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static void * fs_dir_open(lv_fs_drv_t * drv, const char * path);
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * dir_p, char * fn);
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * dir_p);
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Register a driver for the File system interface
*/
void lv_fs_stdio_init(void)
{
/*---------------------------------------------------
* Register the file system interface in LittlevGL
*--------------------------------------------------*/
/* Add a simple drive to open images */
static lv_fs_drv_t fs_drv; /*A driver descriptor*/
lv_fs_drv_init(&fs_drv);
/*Set up fields...*/
fs_drv.letter = LV_USE_FS_STDIO;
fs_drv.open_cb = fs_open;
fs_drv.close_cb = fs_close;
fs_drv.read_cb = fs_read;
fs_drv.write_cb = fs_write;
fs_drv.seek_cb = fs_seek;
fs_drv.tell_cb = fs_tell;
fs_drv.dir_close_cb = fs_dir_close;
fs_drv.dir_open_cb = fs_dir_open;
fs_drv.dir_read_cb = fs_dir_read;
lv_fs_drv_register(&fs_drv);
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Open a file
* @param drv pointer to a driver where this function belongs
* @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
* @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
* @return pointer to FIL struct or NULL in case of fail
*/
static void * fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode)
{
LV_UNUSED(drv);
errno = 0;
const char * flags = "";
if(mode == LV_FS_MODE_WR) flags = "wb";
else if(mode == LV_FS_MODE_RD) flags = "rb";
else if(mode == (LV_FS_MODE_WR | LV_FS_MODE_RD)) flags = "rb+";
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_STDIO_PATH "%s", path);
FILE * f = fopen(buf, flags);
if(f == NULL) return NULL;
/*Be sure we are the beginning of the file*/
fseek(f, 0, SEEK_SET);
return f;
}
/**
* Close an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a FILE variable. (opened with fs_open)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_close(lv_fs_drv_t * drv, void * file_p)
{
LV_UNUSED(drv);
fclose(file_p);
return LV_FS_RES_OK;
}
/**
* Read data from an opened file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a FILE variable.
* @param buf pointer to a memory block where to store the read data
* @param btr number of Bytes To Read
* @param br the real number of read bytes (Byte Read)
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
{
LV_UNUSED(drv);
*br = fread(buf, 1, btr, file_p);
return LV_FS_RES_OK;
}
/**
* Write into a file
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a FILE variable
* @param buf pointer to a buffer with the bytes to write
* @param btr Bytes To Write
* @param br the number of real written bytes (Bytes Written). NULL if unused.
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
{
LV_UNUSED(drv);
*bw = fwrite(buf, 1, btw, file_p);
return LV_FS_RES_OK;
}
/**
* Set the read write pointer. Also expand the file size if necessary.
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a FILE variable. (opened with fs_open )
* @param pos the new position of read write pointer
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence)
{
LV_UNUSED(drv);
fseek(file_p, pos, whence);
return LV_FS_RES_OK;
}
/**
* Give the position of the read write pointer
* @param drv pointer to a driver where this function belongs
* @param file_p pointer to a FILE variable.
* @param pos_p pointer to to store the result
* @return LV_FS_RES_OK: no error, the file is read
* any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
{
LV_UNUSED(drv);
*pos_p = ftell(file_p);
return LV_FS_RES_OK;
}
#ifdef WIN32
static char next_fn[256];
#endif
/**
* Initialize a 'DIR' or 'HANDLE' variable for directory reading
* @param drv pointer to a driver where this function belongs
* @param path path to a directory
* @return pointer to an initialized 'DIR' or 'HANDLE' variable
*/
static void * fs_dir_open(lv_fs_drv_t * drv, const char * path)
{
LV_UNUSED(drv);
#ifndef WIN32
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_STDIO_PATH "%s", path);
return opendir(buf);
#else
HANDLE d = INVALID_HANDLE_VALUE;
WIN32_FIND_DATA fdata;
/*Make the path relative to the current directory (the projects root folder)*/
char buf[256];
sprintf(buf, LV_FS_STDIO_PATH "%s\\*", path);
strcpy(next_fn, "");
d = FindFirstFile(buf, &fdata);
do {
if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
continue;
} else {
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
sprintf(next_fn, "/%s", fdata.cFileName);
} else {
sprintf(next_fn, "%s", fdata.cFileName);
}
break;
}
} while(FindNextFileA(d, &fdata));
return d;
#endif
}
/**
* Read the next filename form a directory.
* The name of the directories will begin with '/'
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'DIR' or 'HANDLE' variable
* @param fn pointer to a buffer to store the filename
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_read(lv_fs_drv_t * drv, void * dir_p, char * fn)
{
LV_UNUSED(drv);
#ifndef WIN32
struct dirent *entry;
do {
entry = readdir(dir_p);
if(entry) {
if(entry->d_type == DT_DIR) sprintf(fn, "/%s", entry->d_name);
else strcpy(fn, entry->d_name);
} else {
strcpy(fn, "");
}
} while(strcmp(fn, "/.") == 0 || strcmp(fn, "/..") == 0);
#else
strcpy(fn, next_fn);
strcpy(next_fn, "");
WIN32_FIND_DATA fdata;
if(FindNextFile(dir_p, &fdata) == false) return LV_FS_RES_OK;
do {
if (strcmp(fdata.cFileName, ".") == 0 || strcmp(fdata.cFileName, "..") == 0) {
continue;
} else {
if (fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
sprintf(next_fn, "/%s", fdata.cFileName);
} else {
sprintf(next_fn, "%s", fdata.cFileName);
}
break;
}
} while(FindNextFile(dir_p, &fdata));
#endif
return LV_FS_RES_OK;
}
/**
* Close the directory reading
* @param drv pointer to a driver where this function belongs
* @param dir_p pointer to an initialized 'DIR' or 'HANDLE' variable
* @return LV_FS_RES_OK or any error from lv_fs_res_t enum
*/
static lv_fs_res_t fs_dir_close(lv_fs_drv_t * drv, void * dir_p)
{
LV_UNUSED(drv);
#ifndef WIN32
closedir(dir_p);
#else
FindClose(dir_p);
#endif
return LV_FS_RES_OK;
}
#endif /*LV_USE_FS_STDIO*/

8
src/extra/libs/fs/lv_fs_libs.h → src/extra/libs/fsdrv/lv_fsdrv.h
View File

@ -1,10 +1,10 @@
/**
* @file lv_fs_libs.h
* @file lv_fsdrv.h
*
*/
#ifndef LV_FS_LIBS_H
#define LV_FS_LIBS_H
#ifndef LV_FSDRV_H
#define LV_FSDRV_H
#ifdef __cplusplus
extern "C" {
@ -46,5 +46,5 @@ extern "C" {
} /* extern "C" */
#endif
#endif /*LV_FS_LIBS_H*/
#endif /*LV_FSDRV_H*/

2
src/extra/libs/lv_libs.h
View File

@ -14,7 +14,7 @@ extern "C" {
* INCLUDES
*********************/
#include "bmp/lv_bmp.h"
#include "fs/lv_fs_libs.h"
#include "fsdrv/lv_fsdrv.h"
#include "png/lv_png.h"
#include "gif/lv_gif.h"
#include "qrcode/lv_qrcode.h"

2
src/extra/lv_extra.c
View File

@ -70,9 +70,7 @@ void lv_extra_init(void)
/*Init freetype library
*Cache max 64 faces and 1 size*/
lv_freetype_init(0, 0, LV_FREETYPE_CACHE_SIZE);
#endif
}
/**********************