1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
# yamlfs.rb
#
require "rubygems"
require 'fusefs'
include FuseFS
require 'yaml'
class YAMLFS < FuseFS::FuseDir
def initialize(filename)
@filename = filename
begin
@fs = YAML.load(IO.read(filename))
rescue Exception
@fs = Hash.new()
end
end
def save
File.open(@filename,'w') do |fout|
fout.puts(YAML.dump(@fs))
end
end
def contents(path)
items = scan_path(path)
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.keys.sort
end
def directory?(path)
items = scan_path(path)
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.is_a?(Hash)
end
def file?(path)
items = scan_path(path)
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.is_a?(String)
end
def touch(path)
puts "#{path} has been pushed like a button!"
end
# File reading
def read_file(path)
items = scan_path(path)
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.to_s
end
def size(path)
read_file(path).size
end
# File writing
def can_write?(path)
items = scan_path(path)
name = items.pop # Last is the filename.
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.is_a?(Hash)
rescue Exception => er
puts "Error! #{er}"
end
def write_to(path,body)
items = scan_path(path)
name = items.pop # Last is the filename.
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node[name] = body
self.save
rescue Exception => er
puts "Error! #{er}"
end
# Delete a file
def can_delete?(path)
items = scan_path(path)
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.is_a?(String)
rescue Exception => er
puts "Error! #{er}"
end
def delete(path)
items = scan_path(path)
name = items.pop # Last is the filename.
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.delete(name)
self.save
rescue Exception => er
puts "Error! #{er}"
end
# mkdirs
def can_mkdir?(path)
items = scan_path(path)
name = items.pop # Last is the filename.
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.is_a?(Hash)
rescue Exception => er
puts "Error! #{er}"
end
def mkdir(path)
items = scan_path(path)
name = items.pop # Last is the filename.
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node[name] = Hash.new
self.save
end
# rmdir
def can_rmdir?(path)
items = scan_path(path)
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.is_a?(Hash) && node.empty?
end
def rmdir(path)
items = scan_path(path)
name = items.pop # Last is the filename.
node = items.inject(@fs) do |node,item|
item ? node[item] : node
end
node.delete(name)
self.save
end
end
if (File.basename($0) == File.basename(__FILE__))
if (ARGV.size < 2)
puts "Usage: #{$0} <directory> <yamlfile> <options>"
exit
end
dirname, yamlfile = ARGV.shift, ARGV.shift
unless File.directory?(dirname)
puts "Usage: #{dirname} is not a directory."
exit
end
root = YAMLFS.new(yamlfile)
# Set the root FuseFS
FuseFS.set_root(root)
FuseFS.mount_under(dirname, *ARGV)
FuseFS.run # This doesn't return until we're unmounted.
end
|
