mirror of
https://github.com/go-gitea/gitea
synced 2024-11-16 06:51:29 +01:00
792b4dba2c
* update github.com/blevesearch/bleve v2.0.2 -> v2.0.3 * github.com/denisenkom/go-mssqldb v0.9.0 -> v0.10.0 * github.com/editorconfig/editorconfig-core-go v2.4.1 -> v2.4.2 * github.com/go-chi/cors v1.1.1 -> v1.2.0 * github.com/go-git/go-billy v5.0.0 -> v5.1.0 * github.com/go-git/go-git v5.2.0 -> v5.3.0 * github.com/go-ldap/ldap v3.2.4 -> v3.3.0 * github.com/go-redis/redis v8.6.0 -> v8.8.2 * github.com/go-sql-driver/mysql v1.5.0 -> v1.6.0 * github.com/go-swagger/go-swagger v0.26.1 -> v0.27.0 * github.com/lib/pq v1.9.0 -> v1.10.1 * github.com/mattn/go-sqlite3 v1.14.6 -> v1.14.7 * github.com/go-testfixtures/testfixtures v3.5.0 -> v3.6.0 * github.com/issue9/identicon v1.0.1 -> v1.2.0 * github.com/klauspost/compress v1.11.8 -> v1.12.1 * github.com/mgechev/revive v1.0.3 -> v1.0.6 * github.com/microcosm-cc/bluemonday v1.0.7 -> v1.0.8 * github.com/niklasfasching/go-org v1.4.0 -> v1.5.0 * github.com/olivere/elastic v7.0.22 -> v7.0.24 * github.com/pelletier/go-toml v1.8.1 -> v1.9.0 * github.com/prometheus/client_golang v1.9.0 -> v1.10.0 * github.com/xanzy/go-gitlab v0.44.0 -> v0.48.0 * github.com/yuin/goldmark v1.3.3 -> v1.3.5 * github.com/6543/go-version v1.2.4 -> v1.3.1 * do github.com/lib/pq v1.10.0 -> v1.10.1 again ...
273 lines
5.6 KiB
Go
Vendored
273 lines
5.6 KiB
Go
Vendored
package runewidth
|
|
|
|
import (
|
|
"os"
|
|
|
|
"github.com/rivo/uniseg"
|
|
)
|
|
|
|
//go:generate go run script/generate.go
|
|
|
|
var (
|
|
// EastAsianWidth will be set true if the current locale is CJK
|
|
EastAsianWidth bool
|
|
|
|
// StrictEmojiNeutral should be set false if handle broken fonts
|
|
StrictEmojiNeutral bool = true
|
|
|
|
// DefaultCondition is a condition in current locale
|
|
DefaultCondition = &Condition{
|
|
EastAsianWidth: false,
|
|
StrictEmojiNeutral: true,
|
|
}
|
|
)
|
|
|
|
func init() {
|
|
handleEnv()
|
|
}
|
|
|
|
func handleEnv() {
|
|
env := os.Getenv("RUNEWIDTH_EASTASIAN")
|
|
if env == "" {
|
|
EastAsianWidth = IsEastAsian()
|
|
} else {
|
|
EastAsianWidth = env == "1"
|
|
}
|
|
// update DefaultCondition
|
|
DefaultCondition.EastAsianWidth = EastAsianWidth
|
|
}
|
|
|
|
type interval struct {
|
|
first rune
|
|
last rune
|
|
}
|
|
|
|
type table []interval
|
|
|
|
func inTables(r rune, ts ...table) bool {
|
|
for _, t := range ts {
|
|
if inTable(r, t) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func inTable(r rune, t table) bool {
|
|
if r < t[0].first {
|
|
return false
|
|
}
|
|
|
|
bot := 0
|
|
top := len(t) - 1
|
|
for top >= bot {
|
|
mid := (bot + top) >> 1
|
|
|
|
switch {
|
|
case t[mid].last < r:
|
|
bot = mid + 1
|
|
case t[mid].first > r:
|
|
top = mid - 1
|
|
default:
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
var private = table{
|
|
{0x00E000, 0x00F8FF}, {0x0F0000, 0x0FFFFD}, {0x100000, 0x10FFFD},
|
|
}
|
|
|
|
var nonprint = table{
|
|
{0x0000, 0x001F}, {0x007F, 0x009F}, {0x00AD, 0x00AD},
|
|
{0x070F, 0x070F}, {0x180B, 0x180E}, {0x200B, 0x200F},
|
|
{0x2028, 0x202E}, {0x206A, 0x206F}, {0xD800, 0xDFFF},
|
|
{0xFEFF, 0xFEFF}, {0xFFF9, 0xFFFB}, {0xFFFE, 0xFFFF},
|
|
}
|
|
|
|
// Condition have flag EastAsianWidth whether the current locale is CJK or not.
|
|
type Condition struct {
|
|
EastAsianWidth bool
|
|
StrictEmojiNeutral bool
|
|
}
|
|
|
|
// NewCondition return new instance of Condition which is current locale.
|
|
func NewCondition() *Condition {
|
|
return &Condition{
|
|
EastAsianWidth: EastAsianWidth,
|
|
StrictEmojiNeutral: StrictEmojiNeutral,
|
|
}
|
|
}
|
|
|
|
// RuneWidth returns the number of cells in r.
|
|
// See http://www.unicode.org/reports/tr11/
|
|
func (c *Condition) RuneWidth(r rune) int {
|
|
// optimized version, verified by TestRuneWidthChecksums()
|
|
if !c.EastAsianWidth {
|
|
switch {
|
|
case r < 0x20 || r > 0x10FFFF:
|
|
return 0
|
|
case (r >= 0x7F && r <= 0x9F) || r == 0xAD: // nonprint
|
|
return 0
|
|
case r < 0x300:
|
|
return 1
|
|
case inTable(r, narrow):
|
|
return 1
|
|
case inTables(r, nonprint, combining):
|
|
return 0
|
|
case inTable(r, doublewidth):
|
|
return 2
|
|
default:
|
|
return 1
|
|
}
|
|
} else {
|
|
switch {
|
|
case r < 0 || r > 0x10FFFF || inTables(r, nonprint, combining):
|
|
return 0
|
|
case inTable(r, narrow):
|
|
return 1
|
|
case inTables(r, ambiguous, doublewidth):
|
|
return 2
|
|
case !c.StrictEmojiNeutral && inTables(r, ambiguous, emoji, narrow):
|
|
return 2
|
|
default:
|
|
return 1
|
|
}
|
|
}
|
|
}
|
|
|
|
// StringWidth return width as you can see
|
|
func (c *Condition) StringWidth(s string) (width int) {
|
|
g := uniseg.NewGraphemes(s)
|
|
for g.Next() {
|
|
var chWidth int
|
|
for _, r := range g.Runes() {
|
|
chWidth = c.RuneWidth(r)
|
|
if chWidth > 0 {
|
|
break // Our best guess at this point is to use the width of the first non-zero-width rune.
|
|
}
|
|
}
|
|
width += chWidth
|
|
}
|
|
return
|
|
}
|
|
|
|
// Truncate return string truncated with w cells
|
|
func (c *Condition) Truncate(s string, w int, tail string) string {
|
|
if c.StringWidth(s) <= w {
|
|
return s
|
|
}
|
|
w -= c.StringWidth(tail)
|
|
var width int
|
|
pos := len(s)
|
|
g := uniseg.NewGraphemes(s)
|
|
for g.Next() {
|
|
var chWidth int
|
|
for _, r := range g.Runes() {
|
|
chWidth = c.RuneWidth(r)
|
|
if chWidth > 0 {
|
|
break // See StringWidth() for details.
|
|
}
|
|
}
|
|
if width+chWidth > w {
|
|
pos, _ = g.Positions()
|
|
break
|
|
}
|
|
width += chWidth
|
|
}
|
|
return s[:pos] + tail
|
|
}
|
|
|
|
// Wrap return string wrapped with w cells
|
|
func (c *Condition) Wrap(s string, w int) string {
|
|
width := 0
|
|
out := ""
|
|
for _, r := range []rune(s) {
|
|
cw := c.RuneWidth(r)
|
|
if r == '\n' {
|
|
out += string(r)
|
|
width = 0
|
|
continue
|
|
} else if width+cw > w {
|
|
out += "\n"
|
|
width = 0
|
|
out += string(r)
|
|
width += cw
|
|
continue
|
|
}
|
|
out += string(r)
|
|
width += cw
|
|
}
|
|
return out
|
|
}
|
|
|
|
// FillLeft return string filled in left by spaces in w cells
|
|
func (c *Condition) FillLeft(s string, w int) string {
|
|
width := c.StringWidth(s)
|
|
count := w - width
|
|
if count > 0 {
|
|
b := make([]byte, count)
|
|
for i := range b {
|
|
b[i] = ' '
|
|
}
|
|
return string(b) + s
|
|
}
|
|
return s
|
|
}
|
|
|
|
// FillRight return string filled in left by spaces in w cells
|
|
func (c *Condition) FillRight(s string, w int) string {
|
|
width := c.StringWidth(s)
|
|
count := w - width
|
|
if count > 0 {
|
|
b := make([]byte, count)
|
|
for i := range b {
|
|
b[i] = ' '
|
|
}
|
|
return s + string(b)
|
|
}
|
|
return s
|
|
}
|
|
|
|
// RuneWidth returns the number of cells in r.
|
|
// See http://www.unicode.org/reports/tr11/
|
|
func RuneWidth(r rune) int {
|
|
return DefaultCondition.RuneWidth(r)
|
|
}
|
|
|
|
// IsAmbiguousWidth returns whether is ambiguous width or not.
|
|
func IsAmbiguousWidth(r rune) bool {
|
|
return inTables(r, private, ambiguous)
|
|
}
|
|
|
|
// IsNeutralWidth returns whether is neutral width or not.
|
|
func IsNeutralWidth(r rune) bool {
|
|
return inTable(r, neutral)
|
|
}
|
|
|
|
// StringWidth return width as you can see
|
|
func StringWidth(s string) (width int) {
|
|
return DefaultCondition.StringWidth(s)
|
|
}
|
|
|
|
// Truncate return string truncated with w cells
|
|
func Truncate(s string, w int, tail string) string {
|
|
return DefaultCondition.Truncate(s, w, tail)
|
|
}
|
|
|
|
// Wrap return string wrapped with w cells
|
|
func Wrap(s string, w int) string {
|
|
return DefaultCondition.Wrap(s, w)
|
|
}
|
|
|
|
// FillLeft return string filled in left by spaces in w cells
|
|
func FillLeft(s string, w int) string {
|
|
return DefaultCondition.FillLeft(s, w)
|
|
}
|
|
|
|
// FillRight return string filled in left by spaces in w cells
|
|
func FillRight(s string, w int) string {
|
|
return DefaultCondition.FillRight(s, w)
|
|
}
|