// MatfileNew2Old converts a new mat file to the old mat file format
// convertsymbols -- convert back symbols with Greek characters to UTF-8
func MatfileNew2Old(dirout string, fnold, fnnew string, convertsymbols bool) {
// read file
b, err := io.ReadFile(fnnew)
if err != nil {
io.PfRed("cannot open file: %v", err.Error())
return
}
// decode
var mats_new MatDb
err = json.Unmarshal(b, &mats_new)
if err != nil {
io.PfRed("cannot unmarshal file: %v", err.Error())
return
}
// oldmatdata implements the old data format
type oldmatdata struct {
Name string
Desc string
Model string
Prms []string
Vals []float64
Units []string
Extra string
}
// convert
var mats_old []oldmatdata
for _, m := range mats_new.Materials {
var oldmat oldmatdata
oldmat.Name = m.Name
oldmat.Desc = m.Desc
oldmat.Model = m.Model
oldmat.Extra = m.Extra
for _, prm := range m.Prms {
name := prm.N
if convertsymbols {
if n, ok := invertedconversiontable[prm.N]; ok {
name = n
}
}
oldmat.Prms = append(oldmat.Prms, name)
oldmat.Vals = append(oldmat.Vals, prm.V)
if len(prm.U) > 0 {
oldmat.Units = append(oldmat.Units, prm.U)
}
}
mats_old = append(mats_old, oldmat)
}
// encode
buf, err := json.MarshalIndent(mats_old, "", " ")
if err != nil {
return
}
// save file
if dirout == "" {
io.WriteFileS(fnold, string(buf))
return
}
io.WriteFileSD(dirout, fnold, string(buf))
}
// MatfileOld2New converts an old mat file to new mat file format
// convertsymbols -- convert symbols with Greek characters to ANSI
func MatfileOld2New(dirout string, fnnew, fnold string, convertsymbols bool) {
// oldmatdata implements the old data format
type oldmatdata struct {
Name string
Desc string
Model string
Prms []string
Vals []float64
Units []string
Extra string
}
// data holder
var mats_old []oldmatdata
// read file
b, err := io.ReadFile(fnold)
if err != nil {
chk.Panic("cannot open file: %v", err.Error())
}
// decode
err = json.Unmarshal(b, &mats_old)
if err != nil {
chk.Panic("cannot unmarshal file: %v", err.Error())
}
// new data holder
var mats_new MatDb
for _, m := range mats_old {
prms := []*fun.Prm{}
has_units := len(m.Units) == len(m.Prms)
for i, prm := range m.Prms {
name := prm
if convertsymbols {
if n, ok := conversiontable[prm]; ok {
name = n
}
}
if has_units {
prms = append(prms, &fun.Prm{N: name, V: m.Vals[i], U: m.Units[i]})
} else {
prms = append(prms, &fun.Prm{N: name, V: m.Vals[i]})
}
}
mat_new := Material{
Name: m.Name,
Desc: m.Desc,
Model: m.Model,
Extra: m.Extra,
Prms: prms,
}
mats_new.Materials = append(mats_new.Materials, &mat_new)
}
// save file
if dirout == "" {
io.WriteFileS(fnnew, mats_new.String())
return
}
io.WriteFileSD(dirout, fnnew, mats_new.String())
}