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-rw-r--r--ui/messages/tstring/cell.go51
-rw-r--r--ui/messages/tstring/string.go173
2 files changed, 224 insertions, 0 deletions
diff --git a/ui/messages/tstring/cell.go b/ui/messages/tstring/cell.go
new file mode 100644
index 0000000..8a400ee
--- /dev/null
+++ b/ui/messages/tstring/cell.go
@@ -0,0 +1,51 @@
+// 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 tstring
+
+import (
+ "maunium.net/go/tcell"
+ "github.com/mattn/go-runewidth"
+)
+
+type Cell struct {
+ Char rune
+ Style tcell.Style
+}
+
+func NewStyleCell(char rune, style tcell.Style) Cell {
+ return Cell{char, style}
+}
+
+func NewColorCell(char rune, color tcell.Color) Cell {
+ return Cell{char, tcell.StyleDefault.Foreground(color)}
+}
+
+func NewCell(char rune) Cell {
+ return Cell{char, tcell.StyleDefault}
+}
+
+func (cell Cell) RuneWidth() int {
+ return runewidth.RuneWidth(cell.Char)
+}
+
+func (cell Cell) Draw(screen tcell.Screen, x, y int) (chWidth int) {
+ chWidth = cell.RuneWidth()
+ for runeWidthOffset := 0; runeWidthOffset < chWidth; runeWidthOffset++ {
+ screen.SetContent(x+runeWidthOffset, y, cell.Char, nil, cell.Style)
+ }
+ return
+}
diff --git a/ui/messages/tstring/string.go b/ui/messages/tstring/string.go
new file mode 100644
index 0000000..a87d16a
--- /dev/null
+++ b/ui/messages/tstring/string.go
@@ -0,0 +1,173 @@
+// 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 tstring
+
+import (
+ "strings"
+
+ "github.com/mattn/go-runewidth"
+ "maunium.net/go/tcell"
+)
+
+type TString []Cell
+
+func NewBlankTString() TString {
+ return make([]Cell, 0)
+}
+
+func NewTString(str string) TString {
+ newStr := make([]Cell, len(str))
+ for i, char := range str {
+ newStr[i] = NewCell(char)
+ }
+ return newStr
+}
+
+func NewColorTString(str string, color tcell.Color) TString {
+ newStr := make([]Cell, len(str))
+ for i, char := range str {
+ newStr[i] = NewColorCell(char, color)
+ }
+ return newStr
+}
+
+func NewStyleTString(str string, style tcell.Style) TString {
+ newStr := make([]Cell, len(str))
+ for i, char := range str {
+ newStr[i] = NewStyleCell(char, style)
+ }
+ return newStr
+}
+
+func (str TString) AppendTString(data TString) TString {
+ return append(str, data...)
+}
+
+func (str TString) Append(data string) TString {
+ newStr := make(TString, len(str)+len(data))
+ copy(newStr, str)
+ for i, char := range data {
+ newStr[i+len(str)] = NewCell(char)
+ }
+ return newStr
+}
+
+func (str TString) AppendColor(data string, color tcell.Color) TString {
+ newStr := make(TString, len(str)+len(data))
+ copy(newStr, str)
+ for i, char := range data {
+ newStr[i+len(str)] = NewColorCell(char, color)
+ }
+ return newStr
+}
+
+func (str TString) AppendStyle(data string, style tcell.Style) TString {
+ newStr := make(TString, len(str)+len(data))
+ copy(newStr, str)
+ for i, char := range data {
+ newStr[i+len(str)] = NewStyleCell(char, style)
+ }
+ return newStr
+}
+
+func (str TString) Colorize(from, length int, color tcell.Color) {
+ for i := from; i < from+length; i++ {
+ str[i].Style = str[i].Style.Foreground(color)
+ }
+}
+
+func (str TString) Draw(screen tcell.Screen, x, y int) {
+ offsetX := 0
+ for _, cell := range str {
+ offsetX += cell.Draw(screen, x+offsetX, 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]
+}