feat(math): support % expressions

go.mod

@@ -13,7 +13,7 @@ replace (
 
 require (
 	fyne.io/fyne/v2 v2.3.5
-	github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible
+	github.com/Knetic/govaluate v3.0.0+incompatible
 	github.com/bcicen/go-units v1.0.5
 	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20231124074035-2de0cf0c80af
 	github.com/groob/plist v0.0.0-20220217120414-63fa881b19a5

go.sum

@@ -43,8 +43,8 @@ fyne.io/systray v1.10.1-0.20231115130155-104f5ef7839e/go.mod h1:oM2AQqGJ1AMo4nNq
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/toml v1.1.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible h1:1G1pk05UrOh0NlF1oeaaix1x8XzrfjIDK47TY0Zehcw=
-github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
+github.com/Knetic/govaluate v3.0.0+incompatible h1:7o6+MAPhYTCF0+fdvoz1xDedhRb4f6s9Tn1Tt7/WTEg=
+github.com/Knetic/govaluate v3.0.0+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/akavel/rsrc v0.10.2/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=

pkg/currency/eval.go

@@ -12,6 +12,11 @@ import (
 )
 
 func Eval(expr string) (s string, icon []byte, onEnter func(), err error) {
+	isDigit := expr[0] >= 48 && expr[0] <= 57
+	if !isDigit {
+		return "", nil, nil, helpers.ErrSkip
+	}
+
 	parts := strings.Split(strings.ToLower(expr), " ")
 	if len(parts) != 4 {
 		return "", nil, nil, helpers.ErrSkip

pkg/mathexpr/eval.go

@@ -3,6 +3,7 @@ package mathexpr
 import (
 	"fmt"
 	"strconv"
+	"strings"
 
 	"github.com/Knetic/govaluate"
 	"github.com/ventsislav-georgiev/prosper/pkg/helpers"
@@ -14,6 +15,10 @@ func Eval(expr string) (s string, icon []byte, onEnter func(), err error) {
 		return "", nil, nil, helpers.ErrSkip
 	}
 
+	expr = strings.ReplaceAll(expr, " % ", "__MOD__")
+	expr = strings.ReplaceAll(expr, "%", "/100")
+	expr = strings.ReplaceAll(expr, "__MOD__", "%")
+
 	e, err := govaluate.NewEvaluableExpression(expr)
 	if err != nil {
 		return "", nil, nil, err

pkg/translate/eval.go

@@ -11,6 +11,11 @@ import (
 )
 
 func Eval(expr string) (s string, icon []byte, onEnter func(), err error) {
+	isDigit := expr[0] >= 48 && expr[0] <= 57
+	if isDigit || expr[0] != '(' {
+		return "", nil, nil, helpers.ErrSkip
+	}
+
 	parts := strings.Split(strings.ToLower(expr), " ")
 	if len(parts) < 3 {
 		return "", nil, nil, helpers.ErrSkip

pkg/units/eval.go

@@ -9,6 +9,11 @@ import (
 )
 
 func Eval(expr string) (s string, icon []byte, onEnter func(), err error) {
+	isDigit := expr[0] >= 48 && expr[0] <= 57
+	if !isDigit {
+		return "", nil, nil, helpers.ErrSkip
+	}
+
 	parts := strings.Split(strings.ToLower(expr), " ")
 	if len(parts) != 4 {
 		return "", nil, nil, helpers.ErrSkip