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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2019 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package tstring
import (
"strings"
"unicode"
"github.com/mattn/go-runewidth"
"maunium.net/go/mauview"
"maunium.net/go/tcell"
)
type TString []Cell
func NewBlankTString() TString {
return make(TString, 0)
}
func NewTString(str string) TString {
newStr := make(TString, len(str))
for i, char := range str {
newStr[i] = NewCell(char)
}
return newStr
}
func NewColorTString(str string, color tcell.Color) TString {
newStr := make(TString, len(str))
for i, char := range str {
newStr[i] = NewColorCell(char, color)
}
return newStr
}
func NewStyleTString(str string, style tcell.Style) TString {
newStr := make(TString, len(str))
for i, char := range str {
newStr[i] = NewStyleCell(char, style)
}
return newStr
}
func Join(strings []TString, separator string) TString {
if len(strings) == 0 {
return NewBlankTString()
}
out := strings[0]
strings = strings[1:]
if len(separator) == 0 {
return out.AppendTString(strings...)
}
for _, str := range strings {
out = append(out, str.Prepend(separator)...)
}
return out
}
func (str TString) Clone() TString {
newStr := make(TString, len(str))
copy(newStr, str)
return newStr
}
func (str TString) AppendTString(dataList ...TString) TString {
newStr := str
for _, data := range dataList {
newStr = append(newStr, data...)
}
return newStr
}
func (str TString) PrependTString(data TString) TString {
return append(data, str...)
}
func (str TString) Append(data string) TString {
return str.AppendCustom(data, func(r rune) Cell {
return NewCell(r)
})
}
func (str TString) TrimSpace() TString {
return str.Trim(unicode.IsSpace)
}
func (str TString) Trim(fn func(rune) bool) TString {
return str.TrimLeft(fn).TrimRight(fn)
}
func (str TString) TrimLeft(fn func(rune) bool) TString {
for index, cell := range str {
if !fn(cell.Char) {
return append(NewBlankTString(), str[index:]...)
}
}
return NewBlankTString()
}
func (str TString) TrimRight(fn func(rune) bool) TString {
for i := len(str) - 1; i >= 0; i-- {
if !fn(str[i].Char) {
return append(NewBlankTString(), str[:i+1]...)
}
}
return NewBlankTString()
}
func (str TString) AppendColor(data string, color tcell.Color) TString {
return str.AppendCustom(data, func(r rune) Cell {
return NewColorCell(r, color)
})
}
func (str TString) AppendStyle(data string, style tcell.Style) TString {
return str.AppendCustom(data, func(r rune) Cell {
return NewStyleCell(r, style)
})
}
func (str TString) AppendCustom(data string, cellCreator func(rune) Cell) TString {
newStr := make(TString, len(str)+len(data))
copy(newStr, str)
for i, char := range data {
newStr[i+len(str)] = cellCreator(char)
}
return newStr
}
func (str TString) Prepend(data string) TString {
return str.PrependCustom(data, func(r rune) Cell {
return NewCell(r)
})
}
func (str TString) PrependColor(data string, color tcell.Color) TString {
return str.PrependCustom(data, func(r rune) Cell {
return NewColorCell(r, color)
})
}
func (str TString) PrependStyle(data string, style tcell.Style) TString {
return str.PrependCustom(data, func(r rune) Cell {
return NewStyleCell(r, style)
})
}
func (str TString) PrependCustom(data string, cellCreator func(rune) Cell) TString {
newStr := make(TString, len(str)+len(data))
copy(newStr[len(data):], str)
for i, char := range data {
newStr[i] = cellCreator(char)
}
return newStr
}
func (str TString) Colorize(from, length int, color tcell.Color) {
str.AdjustStyle(from, length, func(style tcell.Style) tcell.Style {
return style.Foreground(color)
})
}
func (str TString) AdjustStyle(from, length int, fn func(tcell.Style) tcell.Style) {
for i := from; i < from+length; i++ {
str[i].Style = fn(str[i].Style)
}
}
func (str TString) AdjustStyleFull(fn func(tcell.Style) tcell.Style) {
str.AdjustStyle(0, len(str), fn)
}
func (str TString) Draw(screen mauview.Screen, x, y int) {
for _, cell := range str {
x += cell.Draw(screen, x, y)
}
}
func (str TString) RuneWidth() (width int) {
for _, cell := range str {
width += runewidth.RuneWidth(cell.Char)
}
return width
}
func (str TString) String() string {
var buf strings.Builder
for _, cell := range str {
buf.WriteRune(cell.Char)
}
return buf.String()
}
// Truncate return string truncated with w cells
func (str TString) Truncate(w int) TString {
if str.RuneWidth() <= w {
return str[:]
}
width := 0
i := 0
for ; i < len(str); i++ {
cw := runewidth.RuneWidth(str[i].Char)
if width+cw > w {
break
}
width += cw
}
return str[0:i]
}
func (str TString) IndexFrom(r rune, from int) int {
for i := from; i < len(str); i++ {
if str[i].Char == r {
return i
}
}
return -1
}
func (str TString) Index(r rune) int {
return str.IndexFrom(r, 0)
}
func (str TString) Count(r rune) (counter int) {
index := 0
for {
index = str.IndexFrom(r, index)
if index < 0 {
break
}
index++
counter++
}
return
}
func (str TString) Split(sep rune) []TString {
a := make([]TString, str.Count(sep)+1)
i := 0
orig := str
for {
m := orig.Index(sep)
if m < 0 {
break
}
a[i] = orig[:m]
orig = orig[m+1:]
i++
}
a[i] = orig
return a[:i+1]
}
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