func tagNamesForFile(store *storage.Storage, tx *storage.Tx, fileId entities.FileId, explicitOnly, colour bool) ([]string, error) {
fileTags, err := store.FileTagsByFileId(tx, fileId, explicitOnly)
if err != nil {
return nil, fmt.Errorf("could not retrieve file-tags for file '%v': %v", fileId, err)
}
taggings := make([]string, len(fileTags))
for index, fileTag := range fileTags {
tag, err := store.Tag(tx, fileTag.TagId)
if err != nil {
return nil, fmt.Errorf("could not lookup tag: %v", err)
}
if tag == nil {
return nil, fmt.Errorf("tag '%v' does not exist", fileTag.TagId)
}
var tagging string
if fileTag.ValueId == 0 {
tagging = formatTagValueName(tag.Name, "", colour, fileTag.Implicit, fileTag.Explicit)
} else {
value, err := store.Value(tx, fileTag.ValueId)
if err != nil {
return nil, fmt.Errorf("could not lookup value: %v", err)
}
if value == nil {
return nil, fmt.Errorf("value '%v' does not exist", fileTag.ValueId)
}
tagging = formatTagValueName(tag.Name, value.Name, colour, fileTag.Implicit, fileTag.Explicit)
}
taggings[index] = tagging
}
ansi.Sort(taggings)
return taggings, nil
}
func PrintColumnsWidth(items []string, width int) {
ansi.Sort(items)
padding := 2 // minimum column padding
var colWidths []int
var calcWidth int
cols := 0
rows := 1
// add a row until everything fits or we have every item on its own row
for calcWidth = width + 1; calcWidth > width && rows <= len(items); rows++ {
cols = 0
colWidths = make([]int, 0, width)
calcWidth = -padding // last column has no padding
// try to place items into columns
for index, item := range items {
col := index / rows
if col >= len(colWidths) {
// add column
cols++
colWidths = append(colWidths, 0)
calcWidth += padding
}
itemLength := len(ansi.Strip(item))
if itemLength > colWidths[col] {
// widen column
calcWidth += -colWidths[col] + itemLength
colWidths[col] = itemLength
}
if calcWidth > width {
// exceeded width
break
}
}
}
rows--
// apportion any remaining space between the columns
if cols > 2 && rows > 1 {
padding = (width-calcWidth)/(cols-1) + 2
if padding < 2 {
padding = 2
}
}
// render
for rowIndex := 0; rowIndex < rows; rowIndex++ {
for columnIndex := 0; columnIndex < cols; columnIndex++ {
itemIndex := rows*columnIndex + rowIndex
if itemIndex >= len(items) {
break
}
item := items[itemIndex]
fmt.Print(item)
if columnIndex < cols-1 {
itemLength := len(ansi.Strip(item))
padding := (colWidths[columnIndex] + padding) - itemLength
fmt.Print(strings.Repeat(" ", padding))
}
}
fmt.Println()
}
}