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62 lines
1.7 KiB
62 lines
1.7 KiB
/* |
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Copyright 2015 The Kubernetes Authors. |
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Licensed under the Apache License, Version 2.0 (the "License"); |
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you may not use this file except in compliance with the License. |
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You may obtain a copy of the License at |
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http://www.apache.org/licenses/LICENSE-2.0 |
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Unless required by applicable law or agreed to in writing, software |
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distributed under the License is distributed on an "AS IS" BASIS, |
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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See the License for the specific language governing permissions and |
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limitations under the License. |
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*/ |
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package fields |
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import ( |
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"sort" |
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"strings" |
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) |
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// Fields allows you to present fields independently from their storage. |
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type Fields interface { |
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// Has returns whether the provided field exists. |
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Has(field string) (exists bool) |
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// Get returns the value for the provided field. |
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Get(field string) (value string) |
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} |
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// Set is a map of field:value. It implements Fields. |
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type Set map[string]string |
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// String returns all fields listed as a human readable string. |
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// Conveniently, exactly the format that ParseSelector takes. |
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func (ls Set) String() string { |
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selector := make([]string, 0, len(ls)) |
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for key, value := range ls { |
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selector = append(selector, key+"="+value) |
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} |
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// Sort for determinism. |
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sort.StringSlice(selector).Sort() |
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return strings.Join(selector, ",") |
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} |
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// Has returns whether the provided field exists in the map. |
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func (ls Set) Has(field string) bool { |
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_, exists := ls[field] |
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return exists |
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} |
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// Get returns the value in the map for the provided field. |
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func (ls Set) Get(field string) string { |
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return ls[field] |
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} |
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// AsSelector converts fields into a selectors. |
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func (ls Set) AsSelector() Selector { |
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return SelectorFromSet(ls) |
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}
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