command: adapt the output of the bug list to the terminal size

2 files changed, 21 insertions, 4 deletions

diff --git a/commands/execenv/env.go b/commands/execenv/env.go
index 46de8401..e693807e 100644
--- a/commands/execenv/env.go
+++ b/commands/execenv/env.go
@@ -7,6 +7,7 @@ import (
 	"os"
 
 	"github.com/mattn/go-isatty"
+	"golang.org/x/term"
 
 	"github.com/MichaelMure/git-bug/cache"
 	"github.com/MichaelMure/git-bug/repository"
@@ -57,6 +58,8 @@ type Out interface {
 	// IsTerminal tells if the output is a user terminal (rather than a buffer,
 	// a pipe ...), which tells if we can use colors and other interactive features.
 	IsTerminal() bool
+	// Width return the width of the attached terminal, or a good enough value.
+	Width() int
 
 	// Raw return the underlying io.Writer, or itself if not.
 	// This is useful if something need to access the raw file descriptor.
@@ -123,6 +126,16 @@ func (o out) IsTerminal() bool {
 	return false
 }
 
+func (o out) Width() int {
+	if f, ok := o.Raw().(*os.File); ok {
+		width, _, err := term.GetSize(int(f.Fd()))
+		if err == nil {
+			return width
+		}
+	}
+	return 80
+}
+
 func (o out) Raw() io.Writer {
 	return o.Writer
 }
diff --git a/commands/execenv/env_testing.go b/commands/execenv/env_testing.go
index 03fe0430..15d7b646 100644
--- a/commands/execenv/env_testing.go
+++ b/commands/execenv/env_testing.go
@@ -20,14 +20,14 @@ type TestIn struct {
 	forceIsTerminal bool
 }
 
-func (t *TestIn) ForceIsTerminal(value bool) {
-	t.forceIsTerminal = value
-}
-
 func (t *TestIn) IsTerminal() bool {
 	return t.forceIsTerminal
 }
 
+func (t *TestIn) ForceIsTerminal(value bool) {
+	t.forceIsTerminal = value
+}
+
 var _ Out = &TestOut{}
 
 type TestOut struct {
@@ -60,6 +60,10 @@ func (te *TestOut) IsTerminal() bool {
 	return te.forceIsTerminal
 }
 
+func (te *TestOut) Width() int {
+	return 80
+}
+
 func (te *TestOut) Raw() io.Writer {
 	return te.Buffer
 }