1 | /*
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2 | Copyright (c) 2013 Arduino LLC. All right reserved.
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3 |
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4 | This library is free software; you can redistribute it and/or
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5 | modify it under the terms of the GNU Lesser General Public
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6 | License as published by the Free Software Foundation; either
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7 | version 2.1 of the License, or (at your option) any later version.
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8 |
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9 | This library is distributed in the hope that it will be useful,
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 | Lesser General Public License for more details.
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13 |
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14 | You should have received a copy of the GNU Lesser General Public
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15 | License along with this library; if not, write to the Free Software
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16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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17 | */
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18 |
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19 | #ifndef __FILEIO_H__
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20 | #define __FILEIO_H__
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21 |
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22 | #include <Process.h>
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23 |
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24 | #define FILE_READ 0
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25 | #define FILE_WRITE 1
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26 | #define FILE_APPEND 2
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27 |
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28 | class File : public Stream {
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29 |
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30 | public:
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31 | File(BridgeClass &b = Bridge);
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32 | File(const char *_filename, uint8_t _mode, BridgeClass &b = Bridge);
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33 | ~File();
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34 |
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35 | virtual size_t write(uint8_t);
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36 | virtual size_t write(const uint8_t *buf, size_t size);
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37 | virtual int read();
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38 | virtual int peek();
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39 | virtual int available();
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40 | virtual void flush();
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41 | int read(void *buf, uint16_t nbyte);
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42 | boolean seek(uint32_t pos);
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43 | uint32_t position();
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44 | uint32_t size();
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45 | void close();
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46 | operator bool();
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47 | const char * name();
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48 | boolean isDirectory();
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49 | File openNextFile(uint8_t mode = FILE_READ);
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50 | void rewindDirectory(void);
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51 |
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52 | //using Print::write;
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53 |
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54 | private:
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55 | void doBuffer();
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56 | uint8_t buffered;
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57 | uint8_t readPos;
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58 | uint16_t dirPosition;
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59 | static const int BUFFER_SIZE = 64;
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60 | uint8_t buffer[BUFFER_SIZE];
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61 |
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62 |
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63 | private:
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64 | BridgeClass &bridge;
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65 | String filename;
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66 | uint8_t mode;
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67 | uint8_t handle;
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68 |
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69 | };
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70 |
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71 | class FileSystemClass {
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72 | public:
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73 | FileSystemClass() : bridge(Bridge) { }
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74 | FileSystemClass(BridgeClass &_b) : bridge(_b) { }
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75 |
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76 | boolean begin();
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77 |
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78 | // Open the specified file/directory with the supplied mode (e.g. read or
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79 | // write, etc). Returns a File object for interacting with the file.
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80 | // Note that currently only one file can be open at a time.
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81 | File open(const char *filename, uint8_t mode = FILE_READ);
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82 |
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83 | // Methods to determine if the requested file path exists.
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84 | boolean exists(const char *filepath);
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85 |
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86 | // Create the requested directory hierarchy--if intermediate directories
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87 | // do not exist they will be created.
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88 | boolean mkdir(const char *filepath);
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89 |
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90 | // Delete the file.
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91 | boolean remove(const char *filepath);
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92 |
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93 | boolean rmdir(const char *filepath);
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94 |
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95 | private:
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96 | friend class File;
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97 |
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98 | BridgeClass &bridge;
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99 | };
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100 |
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101 | extern FileSystemClass FileSystem;
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102 |
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103 | #endif
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