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// gomuks - A terminal Matrix client written in Go.
// Copyright (C) 2018 Tulir Asokan
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package messages
import (
"strings"
"github.com/gdamore/tcell"
"github.com/mattn/go-runewidth"
)
type UIString []Cell
func NewUIString(str string) UIString {
newStr := make([]Cell, len(str))
for i, char := range str {
newStr[i] = NewCell(char)
}
return newStr
}
func NewColorUIString(str string, color tcell.Color) UIString {
newStr := make([]Cell, len(str))
for i, char := range str {
newStr[i] = NewColorCell(char, color)
}
return newStr
}
func NewStyleUIString(str string, style tcell.Style) UIString {
newStr := make([]Cell, len(str))
for i, char := range str {
newStr[i] = NewStyleCell(char, style)
}
return newStr
}
func (str UIString) Colorize(from, length int, color tcell.Color) {
for i := from; i < from+length; i++ {
str[i].Style = str[i].Style.Foreground(color)
}
}
func (str UIString) Draw(screen tcell.Screen, x, y int) {
offsetX := 0
for _, cell := range str {
offsetX += cell.Draw(screen, x+offsetX, y)
}
}
func (str UIString) RuneWidth() (width int) {
for _, cell := range str {
width += runewidth.RuneWidth(cell.Char)
}
return width
}
func (str UIString) 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 UIString) Truncate(w int) UIString {
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 UIString) IndexFrom(r rune, from int) int {
for i := from; i < len(str); i++ {
if str[i].Char == r {
return i
}
}
return -1
}
func (str UIString) Index(r rune) int {
return str.IndexFrom(r, 0)
}
func (str UIString) Count(r rune) (counter int) {
index := 0
for {
index = str.IndexFrom(r, index)
if index < 0 {
break
}
index++
counter++
}
return
}
func (str UIString) Split(sep rune) []UIString {
a := make([]UIString, 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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