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4476263d05
* feat: tables * fix(table): examples * docs(table): `any` -> `string` * chore: go mod tidy * docs(table): update image * fix(table): lint * fix: remove binary * chore: color adjustments to pokemon example (#231) * fix(table): support rendering empty data sets * chore(table): simplify table's data interface * fix(table): correct GoDoc + add doc comments to Data methods --------- Co-authored-by: Christian Rocha <christian@rocha.is> Co-authored-by: Christian Muehlhaeuser <muesli@gmail.com>
114 lines
2.3 KiB
Go
114 lines
2.3 KiB
Go
package table
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// Data is the interface that wraps the basic methods of a table model.
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type Data interface {
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// At returns the contents of the cell at the given index.
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At(row, cell int) string
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// Rows returns the number of rows in the table.
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Rows() int
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// Columns returns the number of columns in the table.
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Columns() int
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}
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// StringData is a string-based implementation of the Data interface.
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type StringData struct {
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rows [][]string
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columns int
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}
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// NewStringData creates a new StringData with the given number of columns.
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func NewStringData(rows ...[]string) *StringData {
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m := StringData{columns: 0}
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for _, row := range rows {
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m.columns = max(m.columns, len(row))
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m.rows = append(m.rows, row)
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}
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return &m
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}
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// Append appends the given row to the table.
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func (m *StringData) Append(row []string) {
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m.columns = max(m.columns, len(row))
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m.rows = append(m.rows, row)
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}
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// At returns the contents of the cell at the given index.
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func (m *StringData) At(row, cell int) string {
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if row >= len(m.rows) || cell >= len(m.rows[row]) {
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return ""
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}
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return m.rows[row][cell]
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}
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// Columns returns the number of columns in the table.
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func (m *StringData) Columns() int {
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return m.columns
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}
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// Item appends the given row to the table.
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func (m *StringData) Item(rows ...string) *StringData {
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m.columns = max(m.columns, len(rows))
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m.rows = append(m.rows, rows)
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return m
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}
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// Rows returns the number of rows in the table.
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func (m *StringData) Rows() int {
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return len(m.rows)
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}
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// Filter applies a filter on some data.
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type Filter struct {
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data Data
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filter func(row int) bool
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}
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// NewFilter initializes a new Filter.
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func NewFilter(data Data) *Filter {
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return &Filter{data: data}
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}
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// Filter applies the given filter function to the data.
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func (m *Filter) Filter(f func(row int) bool) *Filter {
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m.filter = f
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return m
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}
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// Row returns the row at the given index.
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func (m *Filter) At(row, cell int) string {
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j := 0
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for i := 0; i < m.data.Rows(); i++ {
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if m.filter(i) {
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if j == row {
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return m.data.At(i, cell)
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}
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j++
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}
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}
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return ""
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}
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// Columns returns the number of columns in the table.
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func (m *Filter) Columns() int {
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return m.data.Columns()
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}
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// Rows returns the number of rows in the table.
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func (m *Filter) Rows() int {
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j := 0
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for i := 0; i < m.data.Rows(); i++ {
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if m.filter(i) {
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j++
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}
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}
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return j
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}
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