177 lines
3.1 KiB
Go
177 lines
3.1 KiB
Go
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
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// be found in the LICENSE file.
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package termui
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import (
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"fmt"
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"math"
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"reflect"
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rw "github.com/mattn/go-runewidth"
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wordwrap "github.com/mitchellh/go-wordwrap"
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)
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// https://stackoverflow.com/questions/12753805/type-converting-slices-of-interfaces-in-go
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func InterfaceSlice(slice interface{}) []interface{} {
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s := reflect.ValueOf(slice)
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if s.Kind() != reflect.Slice {
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panic("InterfaceSlice() given a non-slice type")
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}
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ret := make([]interface{}, s.Len())
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for i := 0; i < s.Len(); i++ {
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ret[i] = s.Index(i).Interface()
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}
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return ret
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}
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func MaxInt(x, y int) int {
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if x > y {
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return x
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}
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return y
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}
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func MinInt(x, y int) int {
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if x < y {
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return x
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}
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return y
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}
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func TrimString(s string, w int) string {
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if w <= 0 {
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return ""
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}
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if rw.StringWidth(s) > w {
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return rw.Truncate(s, w, string(DOTS))
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}
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return s
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}
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func GetMaxIntFromSlice(slice []int) (int, error) {
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if len(slice) == 0 {
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return 0, fmt.Errorf("cannot get max value from empty slice")
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}
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var max int
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for _, val := range slice {
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if val > max {
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max = val
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}
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}
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return max, nil
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}
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func GetMaxFloat64FromSlice(slice []float64) (float64, error) {
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if len(slice) == 0 {
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return 0, fmt.Errorf("cannot get max value from empty slice")
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}
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var max float64
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for _, val := range slice {
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if val > max {
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max = val
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}
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}
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return max, nil
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}
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func GetMaxFloat64From2dSlice(slices [][]float64) (float64, error) {
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if len(slices) == 0 {
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return 0, fmt.Errorf("cannot get max value from empty slice")
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}
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var max float64
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for _, slice := range slices {
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for _, val := range slice {
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if val > max {
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max = val
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}
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}
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}
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return max, nil
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}
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func SelectColor(colors []Color, index int) Color {
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return colors[index%len(colors)]
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}
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func SelectStyle(styles []Style, index int) Style {
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return styles[index%len(styles)]
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}
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func CellsToString(cells []Cell) string {
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runes := make([]rune, len(cells))
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for i, cell := range cells {
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runes[i] = cell.Rune
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}
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return string(runes)
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}
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func RoundFloat64(x float64) float64 {
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return math.Floor(x + 0.5)
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}
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func SumIntSlice(slice []int) int {
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sum := 0
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for _, val := range slice {
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sum += val
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}
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return sum
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}
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func SumFloat64Slice(data []float64) float64 {
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sum := 0.0
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for _, v := range data {
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sum += v
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}
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return sum
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}
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func AbsInt(x int) int {
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if x >= 0 {
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return x
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}
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return -x
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}
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func MinFloat64(x, y float64) float64 {
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if x < y {
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return x
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}
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return y
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}
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func MaxFloat64(x, y float64) float64 {
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if x > y {
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return x
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}
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return y
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}
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func WrapCells(cells []Cell, width uint) []Cell {
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str := CellsToString(cells)
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wrapped := wordwrap.WrapString(str, width)
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wrappedCells := []Cell{}
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i := 0
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for _, _rune := range wrapped {
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if _rune == '\n' {
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wrappedCells = append(wrappedCells, Cell{_rune, StyleClear})
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} else {
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wrappedCells = append(wrappedCells, Cell{_rune, cells[i].Style})
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}
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i++
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}
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return wrappedCells
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}
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func RunesToStyledCells(runes []rune, style Style) []Cell {
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cells := []Cell{}
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for _, _rune := range runes {
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cells = append(cells, Cell{_rune, style})
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}
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return cells
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}
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