Robert Ellis / FileSystemInterface

A terminal style view onto the filesystem, with the concept of current working directory. File systems can be mounted to root using libraries such as LocalFileSystem and SDFileSystem. Initial version only allows changing the current working directory and retrieving a directory listing. Required libraries: <<library /users/Phlaphead/libraries/Util/latest>> library.

FileSystemInterface.cpp@0:63761ecf509c, 2011-06-19 (annotated)

Committer:
Phlaphead
Date:
Sun Jun 19 13:35:48 2011 +0000
Revision:
0:63761ecf509c
Initial revision. Incomplete version, allows manipulation of working directory and listing files only.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Phlaphead 0:63761ecf509c 1
Phlaphead 0:63761ecf509c 2 #include "FileSystemInterface.h"
Phlaphead 0:63761ecf509c 3 #include "mbed.h"
Phlaphead 0:63761ecf509c 4 #include "stringUtils.h"
Phlaphead 0:63761ecf509c 5
Phlaphead 0:63761ecf509c 6 #define __DEBUG
Phlaphead 0:63761ecf509c 7 #include "dbg/dbg.h"
Phlaphead 0:63761ecf509c 8
Phlaphead 0:63761ecf509c 9 FileSystemInterface::FileSystemInterface()
Phlaphead 0:63761ecf509c 10 {
Phlaphead 0:63761ecf509c 11 m_workDirString = getPathAsString(m_workDir);
Phlaphead 0:63761ecf509c 12 }
Phlaphead 0:63761ecf509c 13
Phlaphead 0:63761ecf509c 14 string FileSystemInterface::getPathAsString(vector<string>& path)
Phlaphead 0:63761ecf509c 15 {
Phlaphead 0:63761ecf509c 16 string s_path = "/";
Phlaphead 0:63761ecf509c 17
Phlaphead 0:63761ecf509c 18 for(vector<string>::iterator it = path.begin(); it != path.end(); it++)
Phlaphead 0:63761ecf509c 19 {
Phlaphead 0:63761ecf509c 20 string& directory = *it;
Phlaphead 0:63761ecf509c 21 s_path += directory;
Phlaphead 0:63761ecf509c 22 s_path += "/";
Phlaphead 0:63761ecf509c 23 }
Phlaphead 0:63761ecf509c 24
Phlaphead 0:63761ecf509c 25 return s_path;
Phlaphead 0:63761ecf509c 26 }
Phlaphead 0:63761ecf509c 27
Phlaphead 0:63761ecf509c 28
Phlaphead 0:63761ecf509c 29 string FileSystemInterface::getWorkingDirectory()
Phlaphead 0:63761ecf509c 30 {
Phlaphead 0:63761ecf509c 31 return m_workDirString;
Phlaphead 0:63761ecf509c 32 }
Phlaphead 0:63761ecf509c 33
Phlaphead 0:63761ecf509c 34 bool FileSystemInterface::changeWorkingDirectory(const string& dir)
Phlaphead 0:63761ecf509c 35 {
Phlaphead 0:63761ecf509c 36 bool successful = false;
Phlaphead 0:63761ecf509c 37
Phlaphead 0:63761ecf509c 38 DBG("%d\r\n", dir.find_first_of("/"));
Phlaphead 0:63761ecf509c 39
Phlaphead 0:63761ecf509c 40 if(dir.compare("/") == 0)
Phlaphead 0:63761ecf509c 41 {
Phlaphead 0:63761ecf509c 42 //Root path
Phlaphead 0:63761ecf509c 43 m_workDir.clear();
Phlaphead 0:63761ecf509c 44 successful = true;
Phlaphead 0:63761ecf509c 45 }
Phlaphead 0:63761ecf509c 46 else if(dir.find_first_of("/") == 0)
Phlaphead 0:63761ecf509c 47 {
Phlaphead 0:63761ecf509c 48 //Absolute path
Phlaphead 0:63761ecf509c 49 if(isDir(dir))
Phlaphead 0:63761ecf509c 50 {
Phlaphead 0:63761ecf509c 51 m_workDir.clear();
Phlaphead 0:63761ecf509c 52 m_workDir = tokenize(dir, "/");
Phlaphead 0:63761ecf509c 53 successful = true;
Phlaphead 0:63761ecf509c 54 }
Phlaphead 0:63761ecf509c 55 }
Phlaphead 0:63761ecf509c 56 else if(dir.compare("..") == 0)
Phlaphead 0:63761ecf509c 57 {
Phlaphead 0:63761ecf509c 58 //Parent directory
Phlaphead 0:63761ecf509c 59 if(!m_workDir.empty())
Phlaphead 0:63761ecf509c 60 {
Phlaphead 0:63761ecf509c 61 m_workDir.pop_back();
Phlaphead 0:63761ecf509c 62 successful = true;
Phlaphead 0:63761ecf509c 63 }
Phlaphead 0:63761ecf509c 64 }
Phlaphead 0:63761ecf509c 65 else
Phlaphead 0:63761ecf509c 66 {
Phlaphead 0:63761ecf509c 67 //Relative Path
Phlaphead 0:63761ecf509c 68 string path = m_workDirString + dir;
Phlaphead 0:63761ecf509c 69 if(isDir(path))
Phlaphead 0:63761ecf509c 70 {
Phlaphead 0:63761ecf509c 71 m_workDir.push_back(dir);
Phlaphead 0:63761ecf509c 72 successful = true;
Phlaphead 0:63761ecf509c 73 }
Phlaphead 0:63761ecf509c 74 }
Phlaphead 0:63761ecf509c 75
Phlaphead 0:63761ecf509c 76 if(successful)
Phlaphead 0:63761ecf509c 77 {
Phlaphead 0:63761ecf509c 78 m_workDirString = getPathAsString(m_workDir);
Phlaphead 0:63761ecf509c 79 }
Phlaphead 0:63761ecf509c 80
Phlaphead 0:63761ecf509c 81 return successful;
Phlaphead 0:63761ecf509c 82 }
Phlaphead 0:63761ecf509c 83
Phlaphead 0:63761ecf509c 84
Phlaphead 0:63761ecf509c 85 list<File>& FileSystemInterface::getFileList()
Phlaphead 0:63761ecf509c 86 {
Phlaphead 0:63761ecf509c 87 DIR* directory;
Phlaphead 0:63761ecf509c 88 struct dirent* entry;
Phlaphead 0:63761ecf509c 89 FileType type;
Phlaphead 0:63761ecf509c 90 m_ls.clear();
Phlaphead 0:63761ecf509c 91
Phlaphead 0:63761ecf509c 92 directory = opendir(m_workDirString.c_str());
Phlaphead 0:63761ecf509c 93 if (directory != NULL)
Phlaphead 0:63761ecf509c 94 {
Phlaphead 0:63761ecf509c 95 while ((entry = readdir(directory)) != NULL)
Phlaphead 0:63761ecf509c 96 {
Phlaphead 0:63761ecf509c 97 string name = entry->d_name;
Phlaphead 0:63761ecf509c 98 string path = m_workDirString + name;
Phlaphead 0:63761ecf509c 99
Phlaphead 0:63761ecf509c 100 if(isFile(path))
Phlaphead 0:63761ecf509c 101 {
Phlaphead 0:63761ecf509c 102 type = TYPE_FILE;
Phlaphead 0:63761ecf509c 103 }
Phlaphead 0:63761ecf509c 104 else
Phlaphead 0:63761ecf509c 105 {
Phlaphead 0:63761ecf509c 106 type = TYPE_DIR;
Phlaphead 0:63761ecf509c 107 }
Phlaphead 0:63761ecf509c 108
Phlaphead 0:63761ecf509c 109 m_ls.push_back(File(name, type));
Phlaphead 0:63761ecf509c 110 }
Phlaphead 0:63761ecf509c 111 }
Phlaphead 0:63761ecf509c 112 else
Phlaphead 0:63761ecf509c 113 {
Phlaphead 0:63761ecf509c 114 //printf("Could not open directory!\n");
Phlaphead 0:63761ecf509c 115 }
Phlaphead 0:63761ecf509c 116
Phlaphead 0:63761ecf509c 117 closedir(directory);
Phlaphead 0:63761ecf509c 118 return m_ls;
Phlaphead 0:63761ecf509c 119 }
Phlaphead 0:63761ecf509c 120
Phlaphead 0:63761ecf509c 121
Phlaphead 0:63761ecf509c 122 bool FileSystemInterface::isFile(const string& path)
Phlaphead 0:63761ecf509c 123 {
Phlaphead 0:63761ecf509c 124 FILE *fp = fopen(path.c_str(), "r");
Phlaphead 0:63761ecf509c 125 DBG("%s : %d\r\n", path.c_str(), fp);
Phlaphead 0:63761ecf509c 126 bool isFile = (fp != NULL);
Phlaphead 0:63761ecf509c 127 if(fp)
Phlaphead 0:63761ecf509c 128 {
Phlaphead 0:63761ecf509c 129 fclose(fp);
Phlaphead 0:63761ecf509c 130 }
Phlaphead 0:63761ecf509c 131 return isFile;
Phlaphead 0:63761ecf509c 132 }
Phlaphead 0:63761ecf509c 133
Phlaphead 0:63761ecf509c 134 bool FileSystemInterface::isDir(const string& path)
Phlaphead 0:63761ecf509c 135 {
Phlaphead 0:63761ecf509c 136 DIR *dir = opendir(path.c_str());
Phlaphead 0:63761ecf509c 137 bool isDir = (dir != NULL);
Phlaphead 0:63761ecf509c 138 if(dir)
Phlaphead 0:63761ecf509c 139 {
Phlaphead 0:63761ecf509c 140 closedir(dir);
Phlaphead 0:63761ecf509c 141 }
Phlaphead 0:63761ecf509c 142 return isDir;
Phlaphead 0:63761ecf509c 143 }