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+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ * http://ugfx.org/license.html
+ */
+
+/**
+ * @file src/gfile/gfile.h
+ * @brief GFILE - File IO Routines header file.
+ *
+ * @addtogroup GFILE
+ *
+ * @brief Module which contains Operating system independent FILEIO
+ *
+ * @{
+ */
+
+#ifndef _GFILE_H
+#define _GFILE_H
+
+#include "gfx.h"
+
+#if GFX_USE_GFILE || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Type definitions */
+/*===========================================================================*/
+
+/**
+ * @brief A file pointer
+ */
+
+typedef struct GFILE GFILE;
+typedef struct gfileList gfileList;
+
+extern GFILE *gfileStdIn;
+extern GFILE *gfileStdErr;
+extern GFILE *gfileStdOut;
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+ /**
+ * @brief Check if file exists
+ *
+ * @param[in] fname The file name
+ *
+ * @return TRUE if file exists, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileExists(const char *fname);
+
+ /**
+ * @brief Delete file
+ *
+ * @param[in] fname The file name
+ *
+ * @return TRUE on success, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileDelete(const char *fname);
+
+ /**
+ * @brief Get the size of a file
+ * @note Please use @p gfileGetSize() if the file is opened
+ *
+ * @param[in] fname The file name
+ *
+ * @return File size on success, -1 on error
+ *
+ * @api
+ */
+ long int gfileGetFilesize(const char *fname);
+
+ /**
+ * @brief Rename file
+ *
+ * @param[in] oldname The current file name
+ * @param[in] newname The new name of the file
+ *
+ * @return TRUE on success, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileRename(const char *oldname, const char *newname);
+
+ /**
+ * @brief Open file
+ * @details A file must be opened before it can be accessed
+ * @details The resulting GFILE will be used for all functions that access the file.
+ *
+ * @param[in] fname The file name
+ * @param[in] mode The mode.
+ *
+ * @return Valid GFILE on success, 0 otherwise
+ *
+ * @note The modes follow the c library fopen() standard.
+ * The valid modes are:
+ * <ul><li>r - Open for read, the file must exist</li>
+ * <li>w - Open for write, the file is truncated if it exists</li>
+ * <li>wx - Open for write, the file must not exist</li>
+ * <li>a - Open for append, the file is truncated if it exists</li>
+ * <li>ax - Open for append, the file must not exists</li>
+ * </ul>
+ * The following flags can also be added to the above modes:<br/>
+ * <ul><li>+ - Open for both read and write</li>
+ * <li>b - Open as a binary file rather than a text file</li>
+ * </ul>
+ * @note Not all file-systems support all modes. For example, write
+ * is not available with the ROM file-system. Similarly few platforms
+ * distinguish between binary and text files.
+ * @note Even though binary vs. text is relevant only for a small number of platforms
+ * the "b" flag should always be specified for binary files such as images.
+ * This ensures portability to other platforms. The extra flag will be ignored
+ * on platforms where it is not relevant.
+ *
+ * @api
+ */
+ GFILE * gfileOpen(const char *fname, const char *mode);
+
+ /**
+ * @brief Close file
+ * @details Closes a file after is has been opened using @p gfileOpen()
+ *
+ * @param[in] f The file
+ *
+ * @api
+ */
+ void gfileClose(GFILE *f);
+
+ /**
+ * @brief Read from file
+ * @details Reads a given amount of bytes from the file
+ * @details The read/write cursor will not be reset when calling this function
+ *
+ * @param[in] f The file
+ * @param[out] buf The buffer in which to save the content that has been read from the file
+ * @param[in] len Amount of bytes to read
+ *
+ * @return Amount of bytes read
+ *
+ * @api
+ */
+ size_t gfileRead(GFILE *f, void *buf, size_t len);
+
+ /**
+ * @brief Write to file
+ * @details Write a given amount of bytes to the file
+ * @details The read/write cursor will not be reset when calling this function
+ *
+ * @param[in] f The file
+ * @param[in] buf The buffer which contains the content that will be written to the file
+ * @param[in] len Amount of bytes to write
+ *
+ * @return Amount of bytes written
+ *
+ * @api
+ */
+ size_t gfileWrite(GFILE *f, const void *buf, size_t len);
+
+ /**
+ * @brief Get the current position of the read/write cursor
+ *
+ * @param[in] f The file
+ *
+ * @return The current position in the file
+ *
+ * @api
+ */
+ long int gfileGetPos(GFILE *f);
+
+ /**
+ * @brief Set the position of the read/write cursor
+ *
+ * @param[in] f The file
+ * @param[in] pos The position to which the cursor will be set
+ *
+ * @return TRUE on success, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileSetPos(GFILE *f, long int pos);
+
+ /**
+ * @brief Get the size of file
+ * @note Please use @p gfileGetFilesize() if the file is not opened
+ *
+ * @param[in] f The file
+ *
+ * @return The size of the file
+ *
+ * @api
+ */
+ long int gfileGetSize(GFILE *f);
+
+ /**
+ * @brief Check for EOF
+ * @details Checks if the cursor is at the end of the file
+ *
+ * @param[in] f The file
+ *
+ * @return TRUE if EOF, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileEOF(GFILE *f);
+
+ /**
+ * @brief Mount a logical drive (aka partition)
+ *
+ * @details Not supported by every file system
+ * @details Currently just one drive at one is supported.
+ *
+ * @param[in] fs The file system (F for FatFS)
+ * @param[in] drive The logical drive prefix
+ *
+ * @return TRUE on success, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileMount(char fs, const char *drive);
+
+ /**
+ * @brief Unmount a logical drive (aka partition)
+ *
+ * @details Does have no effect if @p gfileMount() as been called before hand
+ *
+ * @param[in] fs The file system (F for FatFS)
+ * @param[in] drive The logical drive prefix
+ *
+ * @return TRUE on success, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileUnmount(char fs, const char *drive);
+
+ /**
+ * @brief Syncs the file object (flushes the buffer)
+ *
+ * @details Not supported by every file system
+ *
+ * @param[in] f The file
+ *
+ * @return TRUE on success, FALSE otherwise
+ *
+ * @api
+ */
+ bool_t gfileSync(GFILE *f);
+
+ #if GFILE_NEED_FILELISTS || defined(__DOXYGEN__)
+ /**
+ * @brief Open a file list
+ *
+ * @param[in] fs The file system (F for FatFS)
+ * @param[in] path Path information to pass to the file system
+ * @param[in] dirs Pass TRUE to get directories only, FALSE to get files only
+ *
+ * @return A pointer to a file list on success, NULL otherwise
+ *
+ * @note The path parameter is handled in a file-system specific way. It could be
+ * treated as a directory name, it may be treated as a file pattern, or it
+ * may be ignored. Passing NULL will always return the full list of files
+ * in at least the top level directory.
+ * @note For file systems that do not support directories, passing TRUE for dirs
+ * will return an error.
+ * @note You must call @p gfileCloseFileList() when you have finished with the
+ * file list in order to free resources.
+ *
+ * @api
+ */
+ gfileList *gfileOpenFileList(char fs, const char *path, bool_t dirs);
+
+ /**
+ * @brief Get the next file in a file list.
+ *
+ * @param[in] pfl Pointer to a file list returned by @p gfileOpenFileList()
+ *
+ * @return A pointer to a file (or directory) name. Returns NULL if there are no more.
+ *
+ * @note The file name may contain the full directory path or may not depending
+ * on how the file system treats directories.
+ * @note The returned buffer may be destroyed by the next call to any of
+ * @p gfileOpenFileList(), @p gfileReadFileList() or @p gfileCloseFileList().
+ * Do not use this pointer after one of those calls.
+ *
+ * @api
+ */
+ const char *gfileReadFileList(gfileList *pfl);
+
+ /**
+ * @brief Close a file list.
+ *
+ * @param[in] pfl Pointer to a file list returned by @p gfileOpenFileList()
+ *
+ * @api
+ */
+ void gfileCloseFileList(gfileList *pfl);
+ #endif
+
+ #if (GFILE_NEED_CHIBIOSFS && GFX_USE_OS_CHIBIOS) || defined(__DOXYGEN__)
+ /**
+ * @brief Open file from a ChibiOS BaseFileStream
+ *
+ * @param[in] BaseFileStreamPtr The BaseFileStream to open as a GFILE
+ * @param[in] mode The mode.
+ *
+ * @return Valid GFILE on success, 0 otherwise
+ *
+ * @note The modes are the same modes as in @p gfileOpen(). The
+ * open mode is NOT compared against the BaseFileStream capabilities.
+ * @note Supported operations are: read, write, getpos, setpos, eof and getsize
+ *
+ * @api
+ */
+ GFILE * gfileOpenBaseFileStream(void *BaseFileStreamPtr, const char *mode);
+ #endif
+
+ #if GFILE_NEED_MEMFS || defined(__DOXYGEN__)
+ /**
+ * @brief Open file from a memory pointer
+ *
+ * @param[in] memptr The pointer to the memory
+ * @param[in] mode The mode.
+ *
+ * @return Valid GFILE on success, 0 otherwise
+ *
+ * @note The modes are the same modes as in @p gfileOpen(). Note there is
+ * no concept of file-size. Be careful not to overwrite other memory or
+ * to read from inaccessible sections of memory.
+ * @note Supported operations are: read, write, getpos, setpos
+ *
+ * @api
+ */
+ GFILE * gfileOpenMemory(void *memptr, const char *mode);
+ #endif
+
+ #if GFILE_NEED_STRINGS || defined(__DOXYGEN__)
+ /**
+ * @brief Open file from a null terminated C string
+ *
+ * @param[in] str The pointer to the string or string buffer
+ * @param[in] mode The mode
+ *
+ * @return Valid GFILE on success, 0 otherwise
+ *
+ * @note The modes are the same modes as in @p gfileOpen(). Note there is
+ * no concept of file-size. Be careful not to overwrite other memory or
+ * to read from inaccessible sections of memory.
+ * @note Reading will return EOF when the NULL character is reached.
+ * @note Writing will always place a NULL in the next character effectively terminating the
+ * string at the character just written.
+ * @note Supported operations are: read, write, append, getpos, setpos
+ * @note Be careful with setpos and getpos. They do not check for the end of the string.
+ * @note Reading and Writing will read/write a maximum of one character at a time.
+ *
+ * @api
+ */
+ GFILE * gfileOpenString(char *str, const char *mode);
+ #endif
+
+ #if GFILE_NEED_PRINTG || defined(__DOXYGEN__)
+ #include <stdarg.h>
+
+ int vfnprintg(GFILE *f, int maxlen, const char *fmt, va_list arg);
+ int fnprintg(GFILE *f, int maxlen, const char *fmt, ...);
+ #define vfprintg(f,m,a) vfnprintg(f,0,m,a)
+ #define fprintg(f,m,...) fnprintg(f,0,m,...)
+ #define vprintg(m,a) vfnprintg(gfileStdOut,0,m,a)
+ #define printg(m,...) fnprintg(gfileStdOut,0,m,...)
+
+ #if GFILE_NEED_STRINGS
+ int vsnprintg(char *buf, int maxlen, const char *fmt, va_list arg);
+ int snprintg(char *buf, int maxlen, const char *fmt, ...);
+ #define vsprintg(s,m,a) vsnprintg(s,0,m,a)
+ #define sprintg(s,m,...) snprintg(s,0,m,...)
+ #endif
+ #endif
+
+ #if GFILE_NEED_SCANG || defined(__DOXYGEN__)
+ #include <stdarg.h>
+
+ int vfscang(GFILE *f, const char *fmt, va_list arg);
+ int fscang(GFILE *f, const char *fmt, ...);
+ #define vscang(f,a) vfscang(gfileStdIn,f,a)
+ #define scang(f,...) fscang(gfileStdIn,f,...)
+
+ #if GFILE_NEED_STRINGS
+ int vsscang(const char *buf, const char *fmt, va_list arg);
+ int sscang(const char *buf, const char *fmt, ...);
+ #endif
+ #endif
+
+ #if GFILE_NEED_STDIO && !defined(GFILE_IMPLEMENTATION)
+ #define stdin gfileStdIn
+ #define stdout gfileStdOut
+ #define stderr gfileStdErr
+ #define FILENAME_MAX 256 // Use a relatively small number for an embedded platform
+ #define L_tmpnam FILENAME_MAX
+ #define FOPEN_MAX GFILE_MAX_GFILES
+ #define TMP_MAX GFILE_MAX_GFILES
+ #define P_tmpdir "/tmp/"
+ #define FILE GFILE
+ #define fopen(n,m) gfileOpen(n,m)
+ #define fclose(f) gfileClose(f)
+ size_t gstdioRead(void * ptr, size_t size, size_t count, FILE *f);
+ size_t gstdioWrite(const void * ptr, size_t size, size_t count, FILE *f);
+ #define fread(p,sz,cnt,f) gstdioRead(p,sz,cnt,f)
+ #define fwrite(p,sz,cnt,f) gstdioWrite(p,sz,cnt,f)
+ int gstdioSeek(FILE *f, size_t offset, int origin);
+ #define fseek(f,ofs,org) gstdioSeek(f,ofs,org)
+ #define SEEK_SET 0
+ #define SEEK_CUR 1
+ #define SEEK_END 2
+ #define remove(n) (!gfileDelete(n))
+ #define rename(o,n) (!gfileRename(o,n))
+ #define fflush(f) (0)
+ #define ftell(f) gfileGetPos(f)
+ #define fpos_t long int
+ int gstdioGetpos(FILE *f, long int *pos);
+ #define fgetpos(f,pos) gstdioGetpos(f,pos)
+ #define fsetpos(f, pos) (!gfileSetPos(f, *pos))
+ #define rewind(f) gfileSetPos(f, 0);
+ #define feof(f) gfileEOF(f)
+
+ #define vfprintf(f,m,a) vfnprintg(f,0,m,a)
+ #define fprintf(f,m,...) fnprintg(f,0,m,...)
+ #define vprintf(m,a) vfnprintg(gfileStdOut,0,m,a)
+ #define printf(m,...) fnprintg(gfileStdOut,0,m,...)
+ #define vsnprintf(s,n,m,a) vsnprintg(s,n,m,a)
+ #define snprintf(s,n,m,...) snprintg(s,n,m,...)
+ #define vsprintf(s,m,a) vsnprintg(s,0,m,a)
+ #define sprintf(s,m,...) snprintg(s,0,m,...)
+ //TODO
+ //void clearerr ( FILE * stream );
+ //int ferror ( FILE * stream );
+ //FILE * tmpfile ( void ); // Auto-deleting
+ //char * tmpnam ( char * str );
+ //char * mktemp (char *template);
+ //FILE * freopen ( const char * filename, const char * mode, FILE * stream );
+ //setbuf
+ //setvbuf
+ //fflush
+ //fgetc
+ //fgets
+ //fputc
+ //fputs
+ //getc
+ //getchar
+ //puts
+ //ungetc
+ //void perror (const char * str);
+ #endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GFX_USE_GFILE */
+
+#endif /* _GFILE_H */
+/** @} */
+