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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package collate
// Export for testing.
import (
"fmt"
)
type Weights struct {
Primary, Secondary, Tertiary, Quaternary int
}
func W(ce ...int) Weights {
w := Weights{ce[0], defaultSecondary, defaultTertiary, 0}
if len(ce) > 1 {
w.Secondary = ce[1]
}
if len(ce) > 2 {
w.Tertiary = ce[2]
}
if len(ce) > 3 {
w.Quaternary = ce[3]
} else if w.Tertiary != 0 {
w.Quaternary = MaxQuaternary
}
return w
}
func (w Weights) String() string {
return fmt.Sprintf("[%X.%X.%X.%X]", w.Primary, w.Secondary, w.Tertiary, w.Quaternary)
}
type Table struct {
t Weigher
}
func GetTable(c *Collator) *Table {
return &Table{c.t}
}
func convertToWeights(ws []Elem) []Weights {
out := make([]Weights, len(ws))
for i, w := range ws {
out[i] = Weights{int(w.Primary()), int(w.Secondary()), int(w.Tertiary()), int(w.Quaternary())}
}
return out
}
func convertFromWeights(ws []Weights) []Elem {
out := make([]Elem, len(ws))
for i, w := range ws {
out[i] = makeCE([]int{w.Primary, w.Secondary, w.Tertiary, 0})
if out[i] == ceIgnore && w.Quaternary > 0 {
out[i] = MakeQuaternary(w.Quaternary)
}
}
return out
}
func (t *Table) AppendNext(s []byte) ([]Weights, int) {
w, n := t.t.AppendNext(nil, s)
return convertToWeights(w), n
}
func SetTop(c *Collator, top int) {
if c.t == nil {
c.t = &table{}
}
c.variableTop = uint32(top)
}
func GetColElems(c *Collator, str []byte) []Weights {
ce := c.getColElems(str)
return convertToWeights(ce)
}
func ProcessWeights(h AlternateHandling, top int, w []Weights) []Weights {
in := convertFromWeights(w)
processWeights(h, uint32(top), in)
return convertToWeights(in)
}
func KeyFromElems(c *Collator, buf *Buffer, w []Weights) []byte {
k := len(buf.key)
c.keyFromElems(buf, convertFromWeights(w))
return buf.key[k:]
}
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