/** 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(&m_vwd, path, O_READ)) goto fail;
if (!dir.isDir()) goto fail;
m_vwd = dir;
if (set_cwd) SdBaseFile::setCwd(&m_vwd);
return true;
fail:
return false;
}
void CardReader::chdir(const char* relpath) {
SdBaseFile newfile;
SdBaseFile* parent = &root;
if (workDir.isOpen()) parent = &workDir;
if (!newfile.open(parent, relpath, O_READ)) {
ECHO_LMT(DB, SERIAL_SD_CANT_ENTER_SUBDIR, relpath);
}
else {
if (workDirDepth < SD_MAX_FOLDER_DEPTH) {
++workDirDepth;
for (int d = workDirDepth; d--;) workDirParents[d + 1] = workDirParents[d];
workDirParents[0] = *parent;
}
workDir = newfile;
}
}
void SDCard::JSONFileInfo(const char* filename) {
SdBaseFile targetFile;
GCodeFileInfo *info,tmpInfo;
if (strlen(filename) == 0) {
targetFile = file;
info = &fileInfo;
} else {
if (!targetFile.open(fat.vwd(), filename, O_READ) || targetFile.isDir()) {
Com::printF(Com::tJSONErrorStart);
Com::printF(Com::tFileOpenFailed);
Com::printFLN(Com::tJSONErrorEnd);
return;
}
info = &tmpInfo;
info->init(targetFile);
}
if (!targetFile.isOpen()) {
Com::printF(Com::tJSONErrorStart);
Com::printF(Com::tNotSDPrinting);
Com::printFLN(Com::tJSONErrorEnd);
return;
}
// {"err":0,"size":457574,"height":4.00,"layerHeight":0.25,"filament":[6556.3],"generatedBy":"Slic3r 1.1.7 on 2014-11-09 at 17:11:32"}
Com::printF(Com::tJSONFileInfoStart);
Com::print(info->fileSize);
Com::printF(Com::tJSONFileInfoHeight);
Com::print(info->objectHeight);
Com::printF(Com::tJSONFileInfoLayerHeight);
Com::print(info->layerHeight);
Com::printF(Com::tJSONFileInfoFilament);
Com::print(info->filamentNeeded);
Com::printF(Com::tJSONFileInfoGeneratedBy);
Com::print(info->generatedBy);
Com::print('"');
if (strlen(filename) == 0) {
Com::printF(Com::tJSONFileInfoName);
file.printName();
Com::print('"');
}
Com::print('}');
Com::println();
};
void SDCard::lsJSON(const char *filename)
{
SdBaseFile dir;
fat.chdir();
if (*filename == 0) {
dir.openRoot(fat.vol());
} else {
if (!dir.open(fat.vwd(), filename, O_READ) || !dir.isDir()) {
Com::printF(Com::tJSONErrorStart);
Com::printF(Com::tFileOpenFailed);
Com::printFLN(Com::tJSONErrorEnd);
return;
}
}
Com::printF(Com::tJSONDir);
SDCard::printEscapeChars(filename);
Com::printF(Com::tJSONFiles);
dir.lsJSON();
Com::printFLN(Com::tJSONArrayEnd);
}
/** 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);
}
/** 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();
}
/** 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(&m_vwd, newPath);
}
