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vector.go
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vector.go
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package xlsx
import "github.com/gofika/xlsx/packaging"
// VariantTypes
const (
VariantTypeVariant = "variant"
VariantTypeVTLPSTR = "lpstr"
)
// vector for operation xml vt:vector node
type vector struct {
vector *packaging.XVector
}
func newVector(xv *packaging.XVector) *vector {
return &vector{vector: xv}
}
// GetIntPairs get variant type pairs
//
// Example:
//
// InputXML:
// <vt:vector size="2" baseType="variant">
// <vt:variant>
// <vt:lpstr>Worksheets</vt:lpstr>
// </vt:variant>
// <vt:variant>
// <vt:i4>1</vt:i4>
// </vt:variant>
// </vt:vector>
//
// vector.GetIntPairs() // => map[Worksheets 1]
func (v *vector) GetIntPairs() (pairs map[string]int) {
pairs = make(map[string]int)
if v.vector.BaseType != VariantTypeVariant {
return
}
name := ""
for i, variant := range v.vector.Variant {
if i%2 == 0 {
name = variant.Lpstr
} else {
pairs[name] = int(variant.I4)
}
}
return
}
// SetIntPairs set pairs for variant type
//
// Example:
//
// variantPairs := map[string]int {
// "Worksheets": 1,
// }
// vector.SetIntPairs(variantPairs)
//
// OutputXML:
// <vt:vector size="2" baseType="variant">
// <vt:variant>
// <vt:lpstr>Worksheets</vt:lpstr>
// </vt:variant>
// <vt:variant>
// <vt:i4>1</vt:i4>
// </vt:variant>
// </vt:vector>
func (v *vector) SetIntPairs(pairs map[string]int) {
v.vector.BaseType = VariantTypeVariant
v.vector.Variant = []*packaging.XVariant{}
for name, value := range pairs {
v.vector.Variant = append(v.vector.Variant, &packaging.XVariant{Lpstr: name})
v.vector.Variant = append(v.vector.Variant, &packaging.XVariant{I4: int32(value)})
}
v.vector.Size = len(v.vector.Variant)
}
// GetStringArray get lpstr array
//
// Example:
//
// InputXML:
// <vt:vector size="2" baseType="lpstr">
// <vt:lpstr>Sheet1</vt:lpstr>
// <vt:lpstr>Sheet2</vt:lpstr>
// </vt:vector>
//
// vector.GetStringArray() // => [Sheet1 Sheet2]
func (v *vector) GetStringArray() []string {
if v.vector.BaseType != VariantTypeVTLPSTR {
return []string{}
}
return v.vector.Lpstr
}
// SetStringArray set lpstr array
//
// Example:
//
// vector.SetStringArray([]string{"Sheet1", "Sheet2"})
//
// OutputXML:
// <vt:vector size="2" baseType="lpstr">
// <vt:lpstr>Sheet1</vt:lpstr>
// <vt:lpstr>Sheet2</vt:lpstr>
// </vt:vector>
func (v *vector) SetStringArray(strArray []string) {
v.vector.BaseType = VariantTypeVTLPSTR
v.vector.Lpstr = strArray
v.vector.Size = len(strArray)
}
// AppendString append lpstr to array
//
// Example:
//
// InputXML:
// <vt:vector size="2" baseType="lpstr">
// <vt:lpstr>Sheet1</vt:lpstr>
// </vt:vector>
//
// vector.AppendString("Sheet2")
//
// OutputXML:
// <vt:vector size="2" baseType="lpstr">
// <vt:lpstr>Sheet1</vt:lpstr>
// <vt:lpstr>Sheet2</vt:lpstr>
// </vt:vector>
func (v *vector) AppendString(str string) {
if v.vector.BaseType != VariantTypeVTLPSTR {
return
}
v.vector.Lpstr = append(v.vector.Lpstr, str)
v.vector.Size = len(v.vector.Lpstr)
}