forked from dineshba/tf-summarize
/
tree.go
58 lines (50 loc) · 1.49 KB
/
tree.go
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package writer
import (
"fmt"
"io"
"github.com/triarius/tf-summarize/terraform_state"
"github.com/triarius/tf-summarize/tree"
)
type TreeWriter struct {
changes terraform_state.ResourceChanges
drawable bool
}
func (t TreeWriter) Write(writer io.Writer) error {
trees := tree.CreateTree(t.changes)
if t.drawable {
drawableTree := trees.DrawableTree()
_, err := fmt.Fprint(writer, drawableTree.String())
return err
}
for _, t := range trees {
err := printTree(writer, t, "")
if err != nil {
return fmt.Errorf("error writing data to %s: %s", writer, err.Error())
}
}
return nil
}
func NewTreeWriter(changes terraform_state.ResourceChanges, drawable bool) Writer {
return TreeWriter{changes: changes, drawable: drawable}
}
func printTree(writer io.Writer, tree *tree.Tree, prefixSpace string) error {
var err error
prefixSymbol := fmt.Sprintf("%s|---", prefixSpace)
if tree.Value != nil {
colorPrefix, suffix := tree.Value.ColorPrefixAndSuffixText()
_, err = fmt.Fprintf(writer, "%s%s%s%s%s\n", prefixSymbol, colorPrefix, tree.Name, suffix, terraform_state.ColorReset)
} else {
_, err = fmt.Fprintf(writer, "%s%s\n", prefixSymbol, tree.Name)
}
if err != nil {
return fmt.Errorf("error writing data to %s: %s", writer, err.Error())
}
for _, c := range tree.Children {
separator := "|"
err = printTree(writer, c, fmt.Sprintf("%s%s\t", prefixSpace, separator))
if err != nil {
return fmt.Errorf("error writing data to %s: %s", writer, err.Error())
}
}
return nil
}