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slice.go
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slice.go
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/*
* Copyright (c) 2015, Shinya Yagyu
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package tag
import "strings"
//Slice is a slice of *Tag.
type Slice []*Tag
//Len returns size of tags.
func (t Slice) Len() int {
return len(t)
}
//Swap swaps tag order.
func (t Slice) Swap(i, j int) {
t[i], t[j] = t[j], t[i]
}
//Less is true if weight[i]< weigt[j]
func (t Slice) Less(i, j int) bool {
return t[i].weight < t[j].weight
}
//NewSlice create TagList obj and adds tags tagstr=value.
func NewSlice(values []string) Slice {
s := make([]*Tag, len(values))
for i, v := range values {
s[i] = &Tag{v, 0}
}
return s
}
//GetTagstrSlice returns tagstr slice of tags.
func (t Slice) GetTagstrSlice() []string {
result := make([]string, t.Len())
for i, v := range t {
result[i] = v.Tagstr
}
return result
}
//String concatenates and returns tagstr of tags.
func (t Slice) String() string {
return strings.Join(t.GetTagstrSlice(), " ")
}