root / kamaki / cli / command_tree.py @ 8741c407
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1 | b9331a9f | Stavros Sachtouris | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | 00af4193 | Stavros Sachtouris | #
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3 | 00af4193 | Stavros Sachtouris | # Redistribution and use in source and binary forms, with or
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4 | 00af4193 | Stavros Sachtouris | # without modification, are permitted provided that the following
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5 | 00af4193 | Stavros Sachtouris | # conditions are met:
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6 | 00af4193 | Stavros Sachtouris | #
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7 | 00af4193 | Stavros Sachtouris | # 1. Redistributions of source code must retain the above
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8 | fd5db045 | Stavros Sachtouris | # copyright notice, this list of conditions and the following
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9 | fd5db045 | Stavros Sachtouris | # disclaimer.
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10 | 00af4193 | Stavros Sachtouris | #
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11 | 00af4193 | Stavros Sachtouris | # 2. Redistributions in binary form must reproduce the above
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12 | fd5db045 | Stavros Sachtouris | # copyright notice, this list of conditions and the following
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13 | fd5db045 | Stavros Sachtouris | # disclaimer in the documentation and/or other materials
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14 | fd5db045 | Stavros Sachtouris | # provided with the distribution.
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15 | 00af4193 | Stavros Sachtouris | #
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16 | 00af4193 | Stavros Sachtouris | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | 00af4193 | Stavros Sachtouris | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | 00af4193 | Stavros Sachtouris | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | 00af4193 | Stavros Sachtouris | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | 00af4193 | Stavros Sachtouris | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | 00af4193 | Stavros Sachtouris | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | 00af4193 | Stavros Sachtouris | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | 00af4193 | Stavros Sachtouris | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | 00af4193 | Stavros Sachtouris | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | 00af4193 | Stavros Sachtouris | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | 00af4193 | Stavros Sachtouris | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | 00af4193 | Stavros Sachtouris | # POSSIBILITY OF SUCH DAMAGE.
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28 | 00af4193 | Stavros Sachtouris | #
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29 | 00af4193 | Stavros Sachtouris | # The views and conclusions contained in the software and
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30 | 00af4193 | Stavros Sachtouris | # documentation are those of the authors and should not be
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31 | 00af4193 | Stavros Sachtouris | # interpreted as representing official policies, either expressed
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32 | 00af4193 | Stavros Sachtouris | # or implied, of GRNET S.A.
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33 | 00af4193 | Stavros Sachtouris | |
34 | fd5db045 | Stavros Sachtouris | |
35 | 00af4193 | Stavros Sachtouris | class Command(object): |
36 | fd5db045 | Stavros Sachtouris | """Store a command and the next-level (2 levels)"""
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37 | fd5db045 | Stavros Sachtouris | _name = None
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38 | fd5db045 | Stavros Sachtouris | path = None
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39 | fd5db045 | Stavros Sachtouris | cmd_class = None
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40 | fd5db045 | Stavros Sachtouris | subcommands = {} |
41 | fd5db045 | Stavros Sachtouris | help = ' '
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42 | fd5db045 | Stavros Sachtouris | |
43 | fd5db045 | Stavros Sachtouris | def __init__(self, path, help=' ', subcommands={}, cmd_class=None): |
44 | fd5db045 | Stavros Sachtouris | self.path = path
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45 | fd5db045 | Stavros Sachtouris | self.help = help
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46 | fd5db045 | Stavros Sachtouris | self.subcommands = dict(subcommands) |
47 | fd5db045 | Stavros Sachtouris | self.cmd_class = cmd_class
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48 | fd5db045 | Stavros Sachtouris | |
49 | fd5db045 | Stavros Sachtouris | @property
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50 | fd5db045 | Stavros Sachtouris | def name(self): |
51 | fd5db045 | Stavros Sachtouris | if self._name is None: |
52 | fd5db045 | Stavros Sachtouris | self._name = self.path.split('_')[-1] |
53 | fd5db045 | Stavros Sachtouris | return str(self._name) |
54 | fd5db045 | Stavros Sachtouris | |
55 | fd5db045 | Stavros Sachtouris | def add_subcmd(self, subcmd): |
56 | fd5db045 | Stavros Sachtouris | if subcmd.path == '%s_%s' % (self.path, subcmd.name): |
57 | fd5db045 | Stavros Sachtouris | self.subcommands[subcmd.name] = subcmd
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58 | fd5db045 | Stavros Sachtouris | return True |
59 | fd5db045 | Stavros Sachtouris | return False |
60 | fd5db045 | Stavros Sachtouris | |
61 | fd5db045 | Stavros Sachtouris | def get_subcmd(self, name): |
62 | fd5db045 | Stavros Sachtouris | try:
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63 | fd5db045 | Stavros Sachtouris | return self.subcommands[name] |
64 | fd5db045 | Stavros Sachtouris | except KeyError: |
65 | fd5db045 | Stavros Sachtouris | return None |
66 | fd5db045 | Stavros Sachtouris | |
67 | fd5db045 | Stavros Sachtouris | def contains(self, name): |
68 | fd5db045 | Stavros Sachtouris | """Check if a name is a direct child of self"""
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69 | fd5db045 | Stavros Sachtouris | return name in self.subcommands |
70 | fd5db045 | Stavros Sachtouris | |
71 | fd5db045 | Stavros Sachtouris | @property
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72 | fd5db045 | Stavros Sachtouris | def is_command(self): |
73 | 8741c407 | Stavros Sachtouris | return self.cmd_class is not None and len(self.subcommands) == 0 |
74 | fd5db045 | Stavros Sachtouris | |
75 | fd5db045 | Stavros Sachtouris | @property
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76 | fd5db045 | Stavros Sachtouris | def has_description(self): |
77 | fd5db045 | Stavros Sachtouris | return len(self.help.strip()) > 0 |
78 | fd5db045 | Stavros Sachtouris | |
79 | fd5db045 | Stavros Sachtouris | @property
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80 | fd5db045 | Stavros Sachtouris | def description(self): |
81 | fd5db045 | Stavros Sachtouris | return self.help |
82 | fd5db045 | Stavros Sachtouris | |
83 | fd5db045 | Stavros Sachtouris | @property
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84 | fd5db045 | Stavros Sachtouris | def parent_path(self): |
85 | fd5db045 | Stavros Sachtouris | parentpath, sep, name = self.path.rpartition('_') |
86 | fd5db045 | Stavros Sachtouris | return parentpath
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87 | fd5db045 | Stavros Sachtouris | |
88 | fd5db045 | Stavros Sachtouris | def set_class(self, cmd_class): |
89 | fd5db045 | Stavros Sachtouris | self.cmd_class = cmd_class
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90 | fd5db045 | Stavros Sachtouris | |
91 | fd5db045 | Stavros Sachtouris | def get_class(self): |
92 | fd5db045 | Stavros Sachtouris | return self.cmd_class |
93 | fd5db045 | Stavros Sachtouris | |
94 | fd5db045 | Stavros Sachtouris | def has_subname(self, subname): |
95 | fd5db045 | Stavros Sachtouris | return subname in self.subcommands |
96 | fd5db045 | Stavros Sachtouris | |
97 | fd5db045 | Stavros Sachtouris | def get_subnames(self): |
98 | fd5db045 | Stavros Sachtouris | return self.subcommands.keys() |
99 | fd5db045 | Stavros Sachtouris | |
100 | fd5db045 | Stavros Sachtouris | def get_subcommands(self): |
101 | fd5db045 | Stavros Sachtouris | return self.subcommands.values() |
102 | fd5db045 | Stavros Sachtouris | |
103 | fd5db045 | Stavros Sachtouris | def sublen(self): |
104 | fd5db045 | Stavros Sachtouris | return len(self.subcommands) |
105 | fd5db045 | Stavros Sachtouris | |
106 | fd5db045 | Stavros Sachtouris | def parse_out(self, args): |
107 | fd5db045 | Stavros Sachtouris | cmd = self
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108 | fd5db045 | Stavros Sachtouris | index = 0
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109 | fd5db045 | Stavros Sachtouris | for term in args: |
110 | fd5db045 | Stavros Sachtouris | try:
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111 | fd5db045 | Stavros Sachtouris | cmd = cmd.subcommands[term] |
112 | fd5db045 | Stavros Sachtouris | except KeyError: |
113 | fd5db045 | Stavros Sachtouris | break
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114 | fd5db045 | Stavros Sachtouris | index += 1
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115 | fd5db045 | Stavros Sachtouris | return cmd, args[index:]
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116 | fd5db045 | Stavros Sachtouris | |
117 | fd5db045 | Stavros Sachtouris | def pretty_print(self, recursive=False): |
118 | de73876b | Stavros Sachtouris | print('Path: %s (Name: %s) is_cmd: %s\n\thelp: %s' % (
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119 | de73876b | Stavros Sachtouris | self.path,
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120 | de73876b | Stavros Sachtouris | self.name,
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121 | de73876b | Stavros Sachtouris | self.is_command,
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122 | de73876b | Stavros Sachtouris | self.help))
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123 | fd5db045 | Stavros Sachtouris | for cmd in self.get_subcommands(): |
124 | fd5db045 | Stavros Sachtouris | cmd.pretty_print(recursive) |
125 | fd5db045 | Stavros Sachtouris | |
126 | 00af4193 | Stavros Sachtouris | |
127 | d9325478 | Stavros Sachtouris | class CommandTree(object): |
128 | d9325478 | Stavros Sachtouris | |
129 | fd5db045 | Stavros Sachtouris | groups = {} |
130 | fd5db045 | Stavros Sachtouris | _all_commands = {} |
131 | fd5db045 | Stavros Sachtouris | name = None
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132 | fd5db045 | Stavros Sachtouris | description = None
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133 | fd5db045 | Stavros Sachtouris | |
134 | fd5db045 | Stavros Sachtouris | def __init__(self, name, description=''): |
135 | fd5db045 | Stavros Sachtouris | self.name = name
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136 | fd5db045 | Stavros Sachtouris | self.description = description
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137 | fd5db045 | Stavros Sachtouris | |
138 | fd5db045 | Stavros Sachtouris | def add_command(self, command_path, description=None, cmd_class=None): |
139 | fd5db045 | Stavros Sachtouris | terms = command_path.split('_')
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140 | fd5db045 | Stavros Sachtouris | try:
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141 | fd5db045 | Stavros Sachtouris | cmd = self.groups[terms[0]] |
142 | fd5db045 | Stavros Sachtouris | except KeyError: |
143 | fd5db045 | Stavros Sachtouris | cmd = Command(terms[0])
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144 | fd5db045 | Stavros Sachtouris | self.groups[terms[0]] = cmd |
145 | fd5db045 | Stavros Sachtouris | self._all_commands[terms[0]] = cmd |
146 | fd5db045 | Stavros Sachtouris | path = terms[0]
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147 | fd5db045 | Stavros Sachtouris | for term in terms[1:]: |
148 | fd5db045 | Stavros Sachtouris | path += '_' + term
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149 | fd5db045 | Stavros Sachtouris | try:
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150 | fd5db045 | Stavros Sachtouris | cmd = cmd.subcommands[term] |
151 | fd5db045 | Stavros Sachtouris | except KeyError: |
152 | fd5db045 | Stavros Sachtouris | new_cmd = Command(path) |
153 | fd5db045 | Stavros Sachtouris | self._all_commands[path] = new_cmd
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154 | fd5db045 | Stavros Sachtouris | cmd.add_subcmd(new_cmd) |
155 | fd5db045 | Stavros Sachtouris | cmd = new_cmd |
156 | 8741c407 | Stavros Sachtouris | if cmd_class:
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157 | fd5db045 | Stavros Sachtouris | cmd.set_class(cmd_class) |
158 | fd5db045 | Stavros Sachtouris | if description is not None: |
159 | fd5db045 | Stavros Sachtouris | cmd.help = description |
160 | fd5db045 | Stavros Sachtouris | |
161 | fce93ff6 | Stavros Sachtouris | def find_best_match(self, terms): |
162 | fce93ff6 | Stavros Sachtouris | """Find a command that best matches a given list of terms
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163 | fce93ff6 | Stavros Sachtouris |
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164 | fce93ff6 | Stavros Sachtouris | :param terms: (list of str) match them against paths in cmd_tree
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165 | fce93ff6 | Stavros Sachtouris |
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166 | fce93ff6 | Stavros Sachtouris | :returns: (Command, list) the matching command, the remaining terms
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167 | fce93ff6 | Stavros Sachtouris | """
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168 | fce93ff6 | Stavros Sachtouris | path = [] |
169 | fce93ff6 | Stavros Sachtouris | for term in terms: |
170 | fce93ff6 | Stavros Sachtouris | check_path = path + [term] |
171 | fce93ff6 | Stavros Sachtouris | if '_'.join(check_path) not in self._all_commands: |
172 | fce93ff6 | Stavros Sachtouris | break
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173 | fce93ff6 | Stavros Sachtouris | path = check_path |
174 | fce93ff6 | Stavros Sachtouris | if path:
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175 | fce93ff6 | Stavros Sachtouris | return (self._all_commands['_'.join(path)], terms[len(path):]) |
176 | fce93ff6 | Stavros Sachtouris | return (None, terms) |
177 | fce93ff6 | Stavros Sachtouris | |
178 | 6514457a | Stavros Sachtouris | def add_tree(self, new_tree): |
179 | 6514457a | Stavros Sachtouris | tname = new_tree.name |
180 | 6514457a | Stavros Sachtouris | tdesc = new_tree.description |
181 | 6514457a | Stavros Sachtouris | self.groups.update(new_tree.groups)
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182 | 6514457a | Stavros Sachtouris | self._all_commands.update(new_tree._all_commands)
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183 | 6514457a | Stavros Sachtouris | self.set_description(tname, tdesc)
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184 | 6514457a | Stavros Sachtouris | |
185 | 0d249b3e | Stavros Sachtouris | def has_command(self, path): |
186 | 0d249b3e | Stavros Sachtouris | return path in self._all_commands |
187 | 0d249b3e | Stavros Sachtouris | |
188 | fd5db045 | Stavros Sachtouris | def get_command(self, path): |
189 | fd5db045 | Stavros Sachtouris | return self._all_commands[path] |
190 | fd5db045 | Stavros Sachtouris | |
191 | fd5db045 | Stavros Sachtouris | def get_groups(self): |
192 | fd5db045 | Stavros Sachtouris | return self.groups.values() |
193 | fd5db045 | Stavros Sachtouris | |
194 | fd5db045 | Stavros Sachtouris | def get_group_names(self): |
195 | fd5db045 | Stavros Sachtouris | return self.groups.keys() |
196 | fd5db045 | Stavros Sachtouris | |
197 | fd5db045 | Stavros Sachtouris | def set_description(self, path, description): |
198 | fd5db045 | Stavros Sachtouris | self._all_commands[path].help = description
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199 | fd5db045 | Stavros Sachtouris | |
200 | d07b3796 | Stavros Sachtouris | def get_description(self, path): |
201 | fd5db045 | Stavros Sachtouris | return self._all_commands[path].help |
202 | fd5db045 | Stavros Sachtouris | |
203 | fd5db045 | Stavros Sachtouris | def set_class(self, path, cmd_class): |
204 | fd5db045 | Stavros Sachtouris | self._all_commands[path].set_class(cmd_class)
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205 | fd5db045 | Stavros Sachtouris | |
206 | fd5db045 | Stavros Sachtouris | def get_class(self, path): |
207 | fd5db045 | Stavros Sachtouris | return self._all_commands[path].get_class() |
208 | fd5db045 | Stavros Sachtouris | |
209 | fd5db045 | Stavros Sachtouris | def get_subnames(self, path=None): |
210 | de73876b | Stavros Sachtouris | if path in (None, ''): |
211 | de73876b | Stavros Sachtouris | return self.get_group_names() |
212 | de73876b | Stavros Sachtouris | return self._all_commands[path].get_subnames() |
213 | fd5db045 | Stavros Sachtouris | |
214 | fd5db045 | Stavros Sachtouris | def get_subcommands(self, path=None): |
215 | de73876b | Stavros Sachtouris | if path in (None, ''): |
216 | de73876b | Stavros Sachtouris | return self.get_groups() |
217 | de73876b | Stavros Sachtouris | return self._all_commands[path].get_subcommands() |
218 | fd5db045 | Stavros Sachtouris | |
219 | fd5db045 | Stavros Sachtouris | def get_parent(self, path): |
220 | fd5db045 | Stavros Sachtouris | if '_' not in path: |
221 | fd5db045 | Stavros Sachtouris | return None |
222 | fd5db045 | Stavros Sachtouris | terms = path.split('_')
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223 | fd5db045 | Stavros Sachtouris | parent_path = '_'.join(terms[:-1]) |
224 | fd5db045 | Stavros Sachtouris | return self._all_commands[parent_path] |
225 | fd5db045 | Stavros Sachtouris | |
226 | fd5db045 | Stavros Sachtouris | def get_closest_ancestor_command(self, path): |
227 | fd5db045 | Stavros Sachtouris | path, sep, name = path.rpartition('_')
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228 | fd5db045 | Stavros Sachtouris | while len(path) > 0: |
229 | fd5db045 | Stavros Sachtouris | cmd = self._all_commands[path]
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230 | fd5db045 | Stavros Sachtouris | if cmd.is_command:
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231 | fd5db045 | Stavros Sachtouris | return cmd
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232 | fd5db045 | Stavros Sachtouris | path, sep, name = path.rpartition('_')
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233 | fd5db045 | Stavros Sachtouris | return None |
234 | fd5db045 | Stavros Sachtouris | |
235 | fd5db045 | Stavros Sachtouris | if '_' not in path: |
236 | fd5db045 | Stavros Sachtouris | return None |
237 | 3dabe5d2 | Stavros Sachtouris | terms = path.split()[:-1]
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238 | fd5db045 | Stavros Sachtouris | while len(terms) > 0: |
239 | fd5db045 | Stavros Sachtouris | tmp_path = '_'.join(terms)
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240 | fd5db045 | Stavros Sachtouris | cmd = self._all_commands[tmp_path]
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241 | fd5db045 | Stavros Sachtouris | if cmd.is_command:
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242 | fd5db045 | Stavros Sachtouris | return cmd
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243 | fd5db045 | Stavros Sachtouris | terms = terms[:-1]
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244 | fd5db045 | Stavros Sachtouris | raise KeyError('No ancestor commands') |
245 | fd5db045 | Stavros Sachtouris | |
246 | fd5db045 | Stavros Sachtouris | def pretty_print(self, group=None): |
247 | fd5db045 | Stavros Sachtouris | if group is None: |
248 | fd5db045 | Stavros Sachtouris | for group in self.groups: |
249 | fd5db045 | Stavros Sachtouris | self.pretty_print(group)
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250 | fd5db045 | Stavros Sachtouris | else:
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251 | fd5db045 | Stavros Sachtouris | self.groups[group].pretty_print(recursive=True) |