1 files changed, 31 insertions, 0 deletions
diff --git a/common_imap.go b/common_imap.go
new file mode 100644
index 0000000..3d79124
--- /dev/null
+++ b/common_imap.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"errors"
+	"strings"
+)
+
+var err_imap_generic = errors.New("Error in IMAP command received by server.")
+
+func parse_imap_line(line string) (tag, cmd, param string, err error) {
+	line = strings.TrimSuffix(line, "\n")
+	line = strings.TrimSuffix(line, "\r")
+	tag_end := strings.IndexByte(line, ' ')
+	if tag_end == -1 {
+		err = err_imap_generic
+		return
+	}
+	tag = line[:tag_end]
+	rest := line[tag_end+1:]
+	cmd_end := strings.IndexByte(rest, ' ')
+	var param_start int
+	if cmd_end == -1 {
+		cmd_end = len(rest)
+		param_start = len(rest)
+	} else {
+		param_start = cmd_end + 1
+	}
+	cmd = strings.ToUpper(rest[:cmd_end])
+	param = rest[param_start:]
+	return
+}