73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
package d2lib
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"os"
|
|
"strings"
|
|
|
|
"oss.terrastruct.com/d2/d2compiler"
|
|
"oss.terrastruct.com/d2/d2exporter"
|
|
"oss.terrastruct.com/d2/d2graph"
|
|
"oss.terrastruct.com/d2/d2layouts/d2sequence"
|
|
"oss.terrastruct.com/d2/d2renderers/d2fonts"
|
|
"oss.terrastruct.com/d2/d2target"
|
|
"oss.terrastruct.com/d2/lib/textmeasure"
|
|
)
|
|
|
|
type CompileOptions struct {
|
|
UTF16 bool
|
|
MeasuredTexts []*d2target.MText
|
|
Ruler *textmeasure.Ruler
|
|
Layout func(context.Context, *d2graph.Graph) error
|
|
|
|
// FontFamily controls the font family used for all texts that are not the following:
|
|
// - code
|
|
// - latex
|
|
// - pre-measured (web setting)
|
|
// TODO maybe some will want to configure code font too, but that's much lower priority
|
|
FontFamily *d2fonts.FontFamily
|
|
ThemeID int64
|
|
}
|
|
|
|
func Compile(ctx context.Context, input string, opts *CompileOptions) (*d2target.Diagram, *d2graph.Graph, error) {
|
|
if opts == nil {
|
|
opts = &CompileOptions{}
|
|
}
|
|
|
|
g, err := d2compiler.Compile("", strings.NewReader(input), &d2compiler.CompileOptions{
|
|
UTF16: opts.UTF16,
|
|
})
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
if len(g.Objects) > 0 {
|
|
err = g.SetDimensions(opts.MeasuredTexts, opts.Ruler, opts.FontFamily)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
if layout, err := getLayout(opts); err != nil {
|
|
return nil, nil, err
|
|
} else if err := d2sequence.Layout(ctx, g, layout); err != nil {
|
|
return nil, nil, err
|
|
}
|
|
}
|
|
|
|
diagram, err := d2exporter.Export(ctx, g, opts.ThemeID, opts.FontFamily)
|
|
return diagram, g, err
|
|
}
|
|
|
|
func getLayout(opts *CompileOptions) (func(context.Context, *d2graph.Graph) error, error) {
|
|
if opts.Layout != nil {
|
|
return opts.Layout, nil
|
|
} else if os.Getenv("D2_LAYOUT") == "dagre" && dagreLayout != nil {
|
|
return dagreLayout, nil
|
|
} else {
|
|
return nil, errors.New("no available layout")
|
|
}
|
|
}
|
|
|
|
// See c.go
|
|
var dagreLayout func(context.Context, *d2graph.Graph) error
|