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SdFat.cpp
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/* Arduino SdFat Library
* Copyright (C) 2012 by William Greiman
*
* This file is part of the Arduino SdFat Library
*
* This Library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This Library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Arduino SdFat Library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include "Repetier.h"
#if SDSUPPORT
#if defined(ARDUINO) && ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#define COMPAT_PRE1
#endif
//#include <SdFat.h>
extern int8_t RFstricmp(const char* s1, const char* s2);
extern int8_t RFstrnicmp(const char* s1, const char* s2, size_t n);
//#define GLENN_DEBUG
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
static void pstrPrint(FSTRINGPARAM(str)) {
Com::printF(str);
}
//------------------------------------------------------------------------------
static void pstrPrintln(FSTRINGPARAM(str)) {
Com::printFLN(str);
}
//------------------------------------------------------------------------------
/**
* Initialize an SdFat object.
*
* Initializes the SD card, SD volume, and root directory.
*
* \param[in] chipSelectPin SD chip select pin. See Sd2Card::init().
* \param[in] sckRateID value for SPI SCK rate. See Sd2Card::init().
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::begin(uint8_t chipSelectPin, uint8_t sckRateID) {
return card_.init(sckRateID, chipSelectPin) && vol_.init(&card_) && chdir(1);
}
//------------------------------------------------------------------------------
/** Change a volume's working directory to root
*
* Changes the volume's working directory to the SD's root directory.
* Optionally set the current working directory to the volume's
* working directory.
*
* \param[in] set_cwd Set the current working directory to this volume's
* working directory if true.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::chdir(bool set_cwd) {
if (set_cwd) SdBaseFile::cwd_ = &vwd_;
if (vwd_.isOpen()) vwd_.close();
return vwd_.openRoot(&vol_);
}
//------------------------------------------------------------------------------
/** Change a volume's working directory
*
* Changes the volume working directory to the \a path subdirectory.
* Optionally set the current working directory to the volume's
* working directory.
*
* Example: If the volume's working directory is "/DIR", chdir("SUB")
* will change the volume's working directory from "/DIR" to "/DIR/SUB".
*
* If path is "/", the volume's working directory will be changed to the
* root directory
*
* \param[in] path The name of the subdirectory.
*
* \param[in] set_cwd Set the current working directory to this volume's
* working directory if true.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::chdir(const char *path, bool set_cwd) {
SdBaseFile dir;
if (path[0] == '/' && path[1] == '\0') return chdir(set_cwd);
if (!dir.open(&vwd_, path, O_READ)) goto fail;
if (!dir.isDir()) goto fail;
vwd_ = dir;
if (set_cwd) SdBaseFile::cwd_ = &vwd_;
return true;
fail:
return false;
}
//------------------------------------------------------------------------------
/** Set the current working directory to a volume's working directory.
*
* This is useful with multiple SD cards.
*
* The current working directory is changed to this volume's working directory.
*
* This is like the Windows/DOS \<drive letter>: command.
*/
void SdFat::chvol() {
SdBaseFile::cwd_ = &vwd_;
}
//------------------------------------------------------------------------------
/** %Print any SD error code and halt. */
void SdFat::errorHalt() {
errorPrint();
while (1);
}
//------------------------------------------------------------------------------
/** %Print msg, any SD error code, and halt.
*
* \param[in] msg Message to print.
*/
void SdFat::errorHalt(char const* msg) {
errorPrint(msg);
while (1);
}
//------------------------------------------------------------------------------
/** %Print msg, any SD error code, and halt.
*
* \param[in] msg Message in program space (flash memory) to print.
*/
void SdFat::errorHalt_P(FSTRINGPARAM(msg)) {
errorPrint_P(msg);
while (1);
}
//------------------------------------------------------------------------------
/** %Print any SD error code. */
void SdFat::errorPrint() {
if (!card_.errorCode()) return;
Com::printFLN(Com::tSDErrorCode,card_.errorCode());
}
//------------------------------------------------------------------------------
/** %Print msg, any SD error code.
*
* \param[in] msg Message to print.
*/
void SdFat::errorPrint(char const* msg) {
Com::printFLN(Com::tError,msg);
errorPrint();
}
//------------------------------------------------------------------------------
/** %Print msg, any SD error code.
*
* \param[in] msg Message in program space (flash memory) to print.
*/
void SdFat::errorPrint_P(FSTRINGPARAM(msg)) {
Com::printF(Com::tError);
Com::printFLN(msg);
errorPrint();
}
//------------------------------------------------------------------------------
/**
* Test for the existence of a file.
*
* \param[in] name Name of the file to be tested for.
*
* \return true if the file exists else false.
*/
bool SdFat::exists(const char* name) {
return vwd_.exists(name);
}
//------------------------------------------------------------------------------
/** %Print error details and halt after SdFat::init() fails. */
void SdFat::initErrorHalt() {
initErrorPrint();
while (1);
}
//------------------------------------------------------------------------------
/**Print message, error details, and halt after SdFat::init() fails.
*
* \param[in] msg Message to print.
*/
void SdFat::initErrorHalt(char const *msg) {
Com::print(msg);
Com::println();
initErrorHalt();
}
//------------------------------------------------------------------------------
/**Print message, error details, and halt after SdFat::init() fails.
*
* \param[in] msg Message in program space (flash memory) to print.
*/
void SdFat::initErrorHalt_P(FSTRINGPARAM(msg)) {
pstrPrintln(msg);
initErrorHalt();
}
//------------------------------------------------------------------------------
/** Print error details after SdFat::init() fails. */
void SdFat::initErrorPrint() {
if (card_.errorCode()) {
pstrPrintln(PSTR("Can't access SD card. Do not reformat."));
if (card_.errorCode() == SD_CARD_ERROR_CMD0) {
pstrPrintln(PSTR("No card, wrong chip select pin, or SPI problem?"));
}
errorPrint();
} else if (vol_.fatType() == 0) {
pstrPrintln(PSTR("Invalid format, reformat SD."));
} else if (!vwd_.isOpen()) {
pstrPrintln(PSTR("Can't open root directory."));
} else {
pstrPrintln(PSTR("No error found."));
}
}
//------------------------------------------------------------------------------
/**Print message and error details and halt after SdFat::init() fails.
*
* \param[in] msg Message to print.
*/
void SdFat::initErrorPrint(char const *msg) {
Com::print(msg);
Com::println();
initErrorPrint();
}
//------------------------------------------------------------------------------
/**Print message and error details after SdFat::init() fails.
*
* \param[in] msg Message in program space (flash memory) to print.
*/
void SdFat::initErrorPrint_P(FSTRINGPARAM(msg)) {
pstrPrintln(msg);
initErrorHalt();
}
//------------------------------------------------------------------------------
/** Make a subdirectory in the volume working directory.
*
* \param[in] path A path with a valid 8.3 DOS name for the subdirectory.
*
* \param[in] pFlag Create missing parent directories if true.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::mkdir(const char* path, bool pFlag) {
SdBaseFile sub;
return sub.mkdir(&vwd_, path, pFlag);
}
//------------------------------------------------------------------------------
/** Remove a file from the volume working directory.
*
* \param[in] path A path with a valid 8.3 DOS name for the file.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::remove(const char* path) {
return SdBaseFile::remove(&vwd_, path);
}
//------------------------------------------------------------------------------
/** Rename a file or subdirectory.
*
* \param[in] oldPath Path name to the file or subdirectory to be renamed.
*
* \param[in] newPath New path name of the file or subdirectory.
*
* The \a newPath object must not exist before the rename call.
*
* The file to be renamed must not be open. The directory entry may be
* moved and file system corruption could occur if the file is accessed by
* a file object that was opened before the rename() call.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::rename(const char *oldPath, const char *newPath) {
SdBaseFile file;
if (!file.open(oldPath, O_READ)) return false;
return file.rename(&vwd_, newPath);
}
//------------------------------------------------------------------------------
/** Remove a subdirectory from the volume's working directory.
*
* \param[in] path A path with a valid 8.3 DOS name for the subdirectory.
*
* The subdirectory file will be removed only if it is empty.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdFat::rmdir(const char* path) {
SdBaseFile sub;
if (!sub.open(path, O_READ)) return false;
return sub.rmdir();
}
//------------------------------------------------------------------------------
/** Truncate a file to a specified length. The current file position
* will be maintained if it is less than or equal to \a length otherwise
* it will be set to end of file.
*
* \param[in] path A path with a valid 8.3 DOS name for the file.
* \param[in] length The desired length for the file.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
* Reasons for failure include file is read only, file is a directory,
* \a length is greater than the current file size or an I/O error occurs.
*/
bool SdFat::truncate(const char* path, uint32_t length) {
SdBaseFile file;
if (!file.open(path, O_WRITE)) return false;
return file.truncate(length);
}
// macro for debug
#define DBG_FAIL_MACRO // Serial.println(__LINE__)
//------------------------------------------------------------------------------
// pointer to cwd directory
SdBaseFile* SdBaseFile::cwd_ = 0;
// callback function for date/time
void (*SdBaseFile::dateTime_)(uint16_t* date, uint16_t* time) = 0;
//------------------------------------------------------------------------------
// add a cluster to a file
bool SdBaseFile::addCluster() {
if (!vol_->allocContiguous(1, &curCluster_)) {
DBG_FAIL_MACRO;
goto fail;
}
// if first cluster of file link to directory entry
if (firstCluster_ == 0) {
firstCluster_ = curCluster_;
flags_ |= F_FILE_DIR_DIRTY;
}
return true;
fail:
return false;
}
//------------------------------------------------------------------------------
// Add a cluster to a directory file and zero the cluster.
// return with first block of cluster in the cache
cache_t* SdBaseFile::addDirCluster() {
uint32_t block;
cache_t* pc;
// max folder size
if (fileSize_/sizeof(dir_t) >= 0XFFFF) {
DBG_FAIL_MACRO;
goto fail;
}
if (!addCluster()) {
DBG_FAIL_MACRO;
goto fail;
}
block = vol_->clusterStartBlock(curCluster_);
pc = vol_->cacheFetch(block, SdVolume::CACHE_RESERVE_FOR_WRITE);
if (!pc) {
DBG_FAIL_MACRO;
goto fail;
}
memset(pc, 0, 512);
// zero rest of clusters
for (uint8_t i = 1; i < vol_->blocksPerCluster_; i++) {
if (!vol_->writeBlock(block + i, pc->data)) {
DBG_FAIL_MACRO;
goto fail;
}
}
// Increase directory file size by cluster size
fileSize_ += 512UL*vol_->blocksPerCluster_;
return pc;
fail:
return 0;
}
//------------------------------------------------------------------------------
// cache a file's directory entry
// return pointer to cached entry or null for failure
dir_t* SdBaseFile::cacheDirEntry(uint8_t action) {
cache_t* pc;
pc = vol_->cacheFetch(dirBlock_, action);
if (!pc) {
DBG_FAIL_MACRO;
goto fail;
}
return pc->dir + dirIndex_;
fail:
return 0;
}
//------------------------------------------------------------------------------
/** Close a file and force cached data and directory information
* to be written to the storage device.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
* Reasons for failure include no file is open or an I/O error.
*/
bool SdBaseFile::close() {
bool rtn = sync();
type_ = FAT_FILE_TYPE_CLOSED;
return rtn;
}
//------------------------------------------------------------------------------
/** Check for contiguous file and return its raw block range.
*
* \param[out] bgnBlock the first block address for the file.
* \param[out] endBlock the last block address for the file.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
* Reasons for failure include file is not contiguous, file has zero length
* or an I/O error occurred.
*/
bool SdBaseFile::contiguousRange(uint32_t* bgnBlock, uint32_t* endBlock) {
// error if no blocks
if (firstCluster_ == 0) {
DBG_FAIL_MACRO;
goto fail;
}
for (uint32_t c = firstCluster_; ; c++) {
uint32_t next;
if (!vol_->fatGet(c, &next)) {
DBG_FAIL_MACRO;
goto fail;
}
// check for contiguous
if (next != (c + 1)) {
// error if not end of chain
if (!vol_->isEOC(next)) {
DBG_FAIL_MACRO;
goto fail;
}
*bgnBlock = vol_->clusterStartBlock(firstCluster_);
*endBlock = vol_->clusterStartBlock(c)
+ vol_->blocksPerCluster_ - 1;
return true;
}
}
fail:
return false;
}
//------------------------------------------------------------------------------
/** Create and open a new contiguous file of a specified size.
*
* \note This function only supports short DOS 8.3 names.
* See open() for more information.
*
* \param[in] dirFile The directory where the file will be created.
* \param[in] path A path with a valid DOS 8.3 file name.
* \param[in] size The desired file size.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
* Reasons for failure include \a path contains
* an invalid DOS 8.3 file name, the FAT volume has not been initialized,
* a file is already open, the file already exists, the root
* directory is full or an I/O error.
*
*/
bool SdBaseFile::createContiguous(SdBaseFile* dirFile,
const char* path, uint32_t size) {
uint32_t count;
// don't allow zero length file
if (size == 0) {
DBG_FAIL_MACRO;
goto fail;
}
if (!open(dirFile, path, O_CREAT | O_EXCL | O_RDWR)) {
DBG_FAIL_MACRO;
goto fail;
}
// calculate number of clusters needed
count = ((size - 1) >> (vol_->clusterSizeShift_ + 9)) + 1;
// allocate clusters
if (!vol_->allocContiguous(count, &firstCluster_)) {
remove();
DBG_FAIL_MACRO;
goto fail;
}
fileSize_ = size;
// insure sync() will update dir entry
flags_ |= F_FILE_DIR_DIRTY;
return sync();
fail:
return false;
}
//------------------------------------------------------------------------------
/** Return a file's directory entry.
*
* \param[out] dir Location for return of the file's directory entry.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdBaseFile::dirEntry(dir_t* dir) {
dir_t* p;
// make sure fields on SD are correct
if (!sync()) {
DBG_FAIL_MACRO;
goto fail;
}
// read entry
p = cacheDirEntry(SdVolume::CACHE_FOR_READ);
if (!p) {
DBG_FAIL_MACRO;
goto fail;
}
// copy to caller's struct
memcpy(dir, p, sizeof(dir_t));
return true;
fail:
return false;
}
//------------------------------------------------------------------------------
/** Format the name field of \a dir into the 13 byte array
* \a name in standard 8.3 short name format.
*
* \param[in] dir The directory structure containing the name.
* \param[out] name A 13 byte char array for the formatted name.
*/
void SdBaseFile::dirName(const dir_t& dir, char* name) {
uint8_t j = 0;
for (uint8_t i = 0; i < 11; i++) {
if (dir.name[i] == ' ') continue;
if (i == 8) name[j++] = '.';
name[j++] = dir.name[i];
}
name[j] = 0;
}
//------------------------------------------------------------------------------
/** Test for the existence of a file in a directory
*
* \param[in] name Name of the file to be tested for.
*
* The calling instance must be an open directory file.
*
* dirFile.exists("TOFIND.TXT") searches for "TOFIND.TXT" in the directory
* dirFile.
*
* \return true if the file exists else false.
*/
bool SdBaseFile::exists(const char* name) {
SdBaseFile file;
return file.open(this, name, O_READ);
}
//------------------------------------------------------------------------------
/**
* Get a string from a file.
*
* fgets() reads bytes from a file into the array pointed to by \a str, until
* \a num - 1 bytes are read, or a delimiter is read and transferred to \a str,
* or end-of-file is encountered. The string is then terminated
* with a null byte.
*
* fgets() deletes CR, '\\r', from the string. This insures only a '\\n'
* terminates the string for Windows text files which use CRLF for newline.
*
* \param[out] str Pointer to the array where the string is stored.
* \param[in] num Maximum number of characters to be read
* (including the final null byte). Usually the length
* of the array \a str is used.
* \param[in] delim Optional set of delimiters. The default is "\n".
*
* \return For success fgets() returns the length of the string in \a str.
* If no data is read, fgets() returns zero for EOF or -1 if an error occurred.
**/
int16_t SdBaseFile::fgets(char* str, int16_t num, char* delim) {
char ch;
int16_t n = 0;
int16_t r = -1;
while ((n + 1) < num && (r = read(&ch, 1)) == 1) {
// delete CR
if (ch == '\r') continue;
str[n++] = ch;
if (!delim) {
if (ch == '\n') break;
} else {
if (strchr(delim, ch)) break;
}
}
if (r < 0) {
// read error
return -1;
}
str[n] = '\0';
return n;
}
//------------------------------------------------------------------------------
/** Get a file's name
*
* \param[out] name An array of 13 characters for the file's name.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdBaseFile::getFilename(char* name) {
dir_t* p;
if (!isOpen()) {
DBG_FAIL_MACRO;
goto fail;
}
if (isRoot()) {
name[0] = '/';
name[1] = '\0';
return true;
}
// cache entry
p = cacheDirEntry(SdVolume::CACHE_FOR_READ);
if (!p) {
DBG_FAIL_MACRO;
goto fail;
}
// format name
dirName(*p, name);
return true;
fail:
return false;
}
//------------------------------------------------------------------------------
void SdBaseFile::getpos(FatPos_t* pos) {
pos->position = curPosition_;
pos->cluster = curCluster_;
}
//------------------------------------------------------------------------------
/** List directory contents to stdOut.
*
* \param[in] flags The inclusive OR of
*
* LS_DATE - %Print file modification date
*
* LS_SIZE - %Print file size.
*
* LS_R - Recursive list of subdirectories.
*/
void SdBaseFile::ls(uint8_t flags) {
ls(flags, 0);
}
uint8_t SdBaseFile::lsRecursive(SdBaseFile *parent, uint8_t level, char *findFilename, SdBaseFile *pParentFound)
{
dir_t *p = NULL;
uint8_t cnt=0;
char *oldpathend = pathend;
parent->rewind();
while ((p = parent->getLongFilename(p, tempLongFilename, 0, NULL)))
{
HAL::pingWatchdog();
if (! (DIR_IS_FILE(p) || DIR_IS_SUBDIR(p))) continue;
if (strcmp(tempLongFilename, "..") == 0) continue;
if( DIR_IS_SUBDIR(p))
{
if(level>=SD_MAX_FOLDER_DEPTH) continue; // can't go deeper
if(level<SD_MAX_FOLDER_DEPTH)
{
if (findFilename == NULL)
{
if(level)
{
Com::print(fullName);
Com::printF(Com::tSlash);
}
Com::print(tempLongFilename);
Com::printFLN(Com::tSlash); //End with / to mark it as directory entry, so we can see empty directories.
}
}
SdBaseFile next;
char *tmp;
if(level) strcat(fullName, "/");
strcat(fullName, tempLongFilename);
uint16_t index = (parent->curPosition()-31) >> 5;
if(next.open(parent, index, O_READ))
{
if (next.lsRecursive(&next,level+1, findFilename, pParentFound))
return true;
}
parent->seekSet(32 * (index + 1));
if ((tmp = strrchr(fullName, '/'))!= NULL)
*tmp = 0;
else
*fullName = 0;
}
else
{
if (findFilename != NULL)
{
int8_t cFullname;
cFullname = strlen(fullName);
if (RFstrnicmp(fullName, findFilename, cFullname) == 0)
{
if (cFullname > 0)
cFullname++;
if (RFstricmp(tempLongFilename, findFilename+cFullname) == 0)
{
if (pParentFound != NULL)
*pParentFound = *parent;
return true;
}
}
}
else
{
if(level)
{
Com::print(fullName);
Com::printF(Com::tSlash);
}
Com::print(tempLongFilename);
#if SD_EXTENDED_DIR
Com::printF(Com::tSpace,(long)p->fileSize);
#endif
Com::println();
}
}
}
return false;
}
//------------------------------------------------------------------------------
/** List directory contents.
*
* \param[in] pr Print stream for list.
*
* \param[in] flags The inclusive OR of
*
* LS_DATE - %Print file modification date
*
* LS_SIZE - %Print file size.
*
* LS_R - Recursive list of subdirectories.
*
* \param[in] indent Amount of space before file name. Used for recursive
* list to indicate subdirectory level.
*/
void SdBaseFile::ls(uint8_t flags, uint8_t indent) {
SdBaseFile parent;
rewind();
*fullName = 0;
pathend = fullName;
parent = *this;
lsRecursive(&parent, 0, NULL, NULL);
}
//------------------------------------------------------------------------------
// saves 32 bytes on stack for ls recursion
// return 0 - EOF, 1 - normal file, or 2 - directory
int8_t SdBaseFile::lsPrintNext(uint8_t flags, uint8_t indent) {
dir_t dir;
uint8_t w = 0;
while (1) {
if (read(&dir, sizeof(dir)) != sizeof(dir)) return 0;
if (dir.name[0] == DIR_NAME_FREE) return 0;
// skip deleted entry and entries for . and ..
if (dir.name[0] != DIR_NAME_DELETED && dir.name[0] != '.'
&& DIR_IS_FILE_OR_SUBDIR(&dir)) break;
}
// indent for dir level
for (uint8_t i = 0; i < indent; i++) Com::print(' ');
printDirName(dir, flags & (LS_DATE | LS_SIZE) ? 14 : 0, true);
// print modify date/time if requested
if (flags & LS_DATE) {
Com::print(' ');
printFatDate(dir.lastWriteDate);
Com::print(' ');
printFatTime(dir.lastWriteTime);
}
// print size if requested
if (!DIR_IS_SUBDIR(&dir) && (flags & LS_SIZE)) {
Com::print(' ');
Com::print(dir.fileSize);
}
Com::println();
return DIR_IS_FILE(&dir) ? 1 : 2;
}
//------------------------------------------------------------------------------
// format directory name field from a 8.3 name string
FSTRINGVALUE(illegalFileChars,"|<>^+=?/[];,*\"\\");
bool SdBaseFile::make83Name(const char* str, uint8_t* name, const char** ptr) {
uint8_t c;
uint8_t n = 7; // max index for part before dot
uint8_t i = 0;
// blank fill name and extension
while (i < 11) name[i++] = ' ';
i = 0;
while (*str != '\0' && *str != '/') {
c = *str++;
if (c == '.') {
if (n == 10) {
DBG_FAIL_MACRO;
goto fail; // only one dot allowed
}
n = 10; // max index for full 8.3 name
i = 8; // place for extension
} else {
// illegal FAT characters
#define FLASH_ILLEGAL_CHARS
#ifdef FLASH_ILLEGAL_CHARS
// store chars in flash
FSTRINGPARAM(p);
p = illegalFileChars;
uint8_t b;
while ((b = HAL::readFlashByte(p++))) {
if (b == c) {
DBG_FAIL_MACRO;
goto fail;
}
}
#else // FLASH_ILLEGAL_CHARS
// store chars in RAM
if (strchr("|<>^+=?/[];,*\"\\", c)) {
DBG_FAIL_MACRO;
goto fail;
}
#endif // FLASH_ILLEGAL_CHARS
// check size and only allow ASCII printable characters
if (i > n || c < 0X20 || c > 0X7E) {
c = '_';
}
// only upper case allowed in 8.3 names - convert lower to upper
name[i++] = c < 'a' || c > 'z' ? c : c + ('A' - 'a');
}
}
*ptr = str;
// must have a file name, extension is optional
return name[0] != ' ';
fail:
return false;
}
//------------------------------------------------------------------------------
/** Make a new directory.
*
* \param[in] parent An open SdFat instance for the directory that will contain
* the new directory.
*
* \param[in] path A path with a valid 8.3 DOS name for the new directory.
*
* \param[in] pFlag Create missing parent directories if true.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
* Reasons for failure include this file is already open, \a parent is not a
* directory, \a path is invalid or already exists in \a parent.
*/
bool SdBaseFile::mkdir(SdBaseFile* parent, const char* path, bool pFlag) {
uint8_t dname[LONG_FILENAME_LENGTH+1];
SdBaseFile newParent;
if (openParentReturnFile(parent, path, dname, &newParent, pFlag))
{
return mkdir(&newParent, dname);
}
fail:
return false;
}
//------------------------------------------------------------------------------
bool SdBaseFile::mkdir(SdBaseFile* parent, const uint8_t *dname) {
dir_t d;
if (!parent->isDir()) {
DBG_FAIL_MACRO;
goto fail;
}
// create a normal file
if (!open(parent, dname, O_CREAT | O_EXCL | O_RDWR, true)) {
DBG_FAIL_MACRO;
goto fail;
}
// make entry for '.'
memset(&d, 0, sizeof(d));
d.creationDate = FAT_DEFAULT_DATE;
d.creationTime = FAT_DEFAULT_TIME;
d.lastAccessDate = d.creationDate;
d.lastWriteDate = d.creationDate;
d.lastWriteTime = d.creationTime;
d.name[0] = '.';
d.attributes = DIR_ATT_DIRECTORY;
for (uint8_t i = 1; i < 11; i++) d.name[i] = ' ';
if (write(&d, sizeof(dir_t)) < 0)
goto fail;
sync();
// make entry for '..'
d.name[1] = '.';
if (parent->isRoot()) {
d.firstClusterLow = 0;
d.firstClusterHigh = 0;
} else {
d.firstClusterLow = parent->firstCluster_ & 0XFFFF;
d.firstClusterHigh = parent->firstCluster_ >> 16;
}
if (write(&d, sizeof(dir_t)) < 0)
goto fail;
sync();
memset(&d, 0, sizeof(dir_t));
if (write(&d, sizeof(dir_t)) < 0)
goto fail;
sync();
// fileSize_ = 0;
type_ = FAT_FILE_TYPE_SUBDIR;
flags_ |= F_FILE_DIR_DIRTY;
return true;
fail:
return false;
}
//------------------------------------------------------------------------------
/** Open a file in the current working directory.
*
* \param[in] path A path with a valid 8.3 DOS name for a file to be opened.
*
* \param[in] oflag Values for \a oflag are constructed by a bitwise-inclusive
* OR of open flags. see SdBaseFile::open(SdBaseFile*, const char*, uint8_t).
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
*/
bool SdBaseFile::open(const char* path, uint8_t oflag) {
return open(cwd_, path, oflag);
}
//------------------------------------------------------------------------------
/** Open a file or directory by name.
*
* \param[in] dirFile An open SdFat instance for the directory containing the
* file to be opened.
*
* \param[in] path A path with a valid 8.3 DOS name for a file to be opened.
*
* \param[in] oflag Values for \a oflag are constructed by a bitwise-inclusive
* OR of flags from the following list
*
* O_READ - Open for reading.
*
* O_RDONLY - Same as O_READ.
*
* O_WRITE - Open for writing.
*
* O_WRONLY - Same as O_WRITE.
*
* O_RDWR - Open for reading and writing.
*
* O_APPEND - If set, the file offset shall be set to the end of the
* file prior to each write.
*
* O_AT_END - Set the initial position at the end of the file.
*
* O_CREAT - If the file exists, this flag has no effect except as noted
* under O_EXCL below. Otherwise, the file shall be created
*
* O_EXCL - If O_CREAT and O_EXCL are set, open() shall fail if the file exists.
*
* O_SYNC - Call sync() after each write. This flag should not be used with
* write(uint8_t), write_P(PGM_P), writelnmkdir_P(PGM_P), or the Arduino Print class.
* These functions do character at a time writes so sync() will be called
* after each byte.
*
* O_TRUNC - If the file exists and is a regular file, and the file is
* successfully opened and is not read only, its length shall be truncated to 0.
*
* WARNING: A given file must not be opened by more than one SdBaseFile object
* of file corruption may occur.
*
* \note Directory files must be opened read only. Write and truncation is
* not allowed for directory files.
*
* \return The value one, true, is returned for success and
* the value zero, false, is returned for failure.
* Reasons for failure include this file is already open, \a dirFile is not
* a directory, \a path is invalid, the file does not exist