added StringNoHead method

.gitignore

@@ -0,0 +1 @@
+table_header_test.go

go.mod

@@ -6,11 +6,13 @@ require (
 	git.milar.in/milarin/gmath v0.0.2
 	git.milar.in/milarin/slices v0.0.3
 	github.com/fatih/color v1.13.0
+	github.com/mattn/go-runewidth v0.0.13
 )
 
 require (
 	git.milar.in/milarin/channel v0.0.9 // indirect
 	github.com/mattn/go-colorable v0.1.9 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/rivo/uniseg v0.3.4 // indirect
 	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
 )

go.sum

@@ -11,6 +11,11 @@ github.com/mattn/go-colorable v0.1.9/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
 github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+github.com/mattn/go-runewidth v0.0.13 h1:lTGmDsbAYt5DmK6OnoV7EuIF1wEIFAcxld6ypU4OSgU=
+github.com/mattn/go-runewidth v0.0.13/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.3.4 h1:3Z3Eu6FGHZWSfNKJTOUiPatWwfc7DzJRU04jFUqJODw=
+github.com/rivo/uniseg v0.3.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=

table.go

@@ -60,6 +60,31 @@ func (t *Table) AddRow(row ...interface{}) {
 	}
 }
 
+func (t *Table) StringNoHead() string {
+	b := new(strings.Builder)
+
+	b.WriteRune('┏')
+	for i, colwidth := range t.colwidth {
+		b.WriteString(strings.Repeat("━", colwidth))
+		if i < len(t.colwidth)-1 {
+			b.WriteRune('┯')
+		}
+	}
+	b.WriteRune('┓')
+	b.WriteRune('\n')
+
+	for i, row := range t.data {
+		t.printRow(b, row, t.rowheight[i])
+		if t.rowSep && i < len(t.data)-1 {
+			t.addNextCellLine(b)
+		}
+	}
+
+	t.addLastCellLine(b)
+
+	return b.String()
+}
+
 func (t *Table) String() string {
 	b := new(strings.Builder)
 

table_header.go

@@ -6,14 +6,21 @@ import (
 	"git.milar.in/milarin/slices"
 )
 
-// TODO FormatHeaderTable is a quick hack
+func FormatHeaderTable(header string, table *Table) string {
+	return formatHeaderTableStr(header, table.String())
+}
+
+func FormatHeaderTableNoHead(header string, table *Table) string {
+	return formatHeaderTableStr(header, table.StringNoHead())
+}
+
+// TODO formatHeaderTableStr is a quick hack
 // a better solution would be to support nested tables.
 // in that case, a header table is just a table with a singe col, single header row and single data row
 
-func FormatHeaderTable(header string, table *Table) string {
+func formatHeaderTableStr(header string, tab string) string {
 	b := new(strings.Builder)
 
-	tab := table.String()
 	splits := strings.Split(tab, "\n")
 	tabwidth := strLen(splits[0])
 
@@ -31,5 +38,7 @@ func FormatHeaderTable(header string, table *Table) string {
 		b.WriteString(s)
 		b.WriteRune('\n')
 	})
-	return b.String()
+
+	ret := b.String()
+	return ret[:len(ret)-1]
 }

utils.go

@@ -3,6 +3,8 @@ package tprint
 import (
 	"strings"
 	"unicode"
+
+	"github.com/mattn/go-runewidth"
 )
 
 func maxLengthStr(a, b string) string {
@@ -25,9 +27,10 @@ func strLen(str string) int {
 	runes := []rune(str)
 
 	for i := 0; i < len(runes); i++ {
+		rn := runes[i]
 
 		// skip control sequences
-		if unicode.IsControl(runes[i]) {
+		if unicode.IsControl(rn) {
 			for j := i; j < len(runes)-1 && runes[j] != 'm'; j++ {
 				i = j
 			}
@@ -35,7 +38,11 @@ func strLen(str string) int {
 			continue
 		}
 
-		l++
+		if rn <= 0xFF || rn >= '─' && rn <= '╿' {
+			l++
+		} else {
+			l += runewidth.RuneWidth(rn)
+		}
 	}
 
 	return l