templates: allow inline user styles

Allow custom user-defined styles in a styleset. The styles can take any
name, and must be under the [user] ini section. All attributes apply to
user defined styles.

Example:

	[user]
	red.fg=red
	red.bold=true

Add a .Style function which accepts the name of a user-defined style and
applies it to the string.

	{{.Style "red" "foo"}}

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/state/templates.go b/lib/state/templates.go
index 2d5e39f5..d5631b11 100644
--- a/lib/state/templates.go
+++ b/lib/state/templates.go
@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"git.sr.ht/~rjarry/aerc/config"
+	"git.sr.ht/~rjarry/aerc/lib/parse"
 	"git.sr.ht/~rjarry/aerc/models"
 	sortthread "github.com/emersion/go-imap-sortthread"
 	"github.com/emersion/go-message/mail"
@@ -449,3 +450,9 @@ func (d *TemplateData) TrayInfo() string {
 func (d *TemplateData) PendingKeys() string {
 	return config.FormatKeyStrokes(d.pendingKeys)
 }
+
+func (d *TemplateData) Style(name string, content string) string {
+	cfg := config.Ui.ForAccount(d.Account())
+	style := cfg.GetUserStyle(name)
+	return parse.ApplyStyle(style, content)
+}