buffer descriptions (my bad, i forgot)

1 files changed, 10 insertions, 1 deletions

diff --git a/describe/describe.go b/describe/describe.go
index 7f2c888..443c0e6 100644
--- a/describe/describe.go
+++ b/describe/describe.go
@@ -3,6 +3,7 @@ package describe
 import (
 	"bufio"
 	"os"
+	"pik/model"
 	"strings"
 )
 
@@ -11,9 +12,16 @@ var DescriptionPrefixes = []string{
 	"//",
 }
 
-func Describe(file string) (string, error) {
+var descriptions = make(map[model.Target]*string)
+
+func Describe(key model.Target, file string) (string, error) {
+	if d := descriptions[key]; d != nil {
+		return *d, nil
+	}
 	fd, err := os.Open(file)
 	if err != nil {
+		msg := err.Error()
+		descriptions[key] = &msg
 		return "", err
 	}
 	defer fd.Close()
@@ -33,5 +41,6 @@ func Describe(file string) (string, error) {
 		text = strings.TrimPrefix(text, c)
 		text = strings.TrimSpace(text)
 	}
+	descriptions[key] = &text
 	return text, nil
 }