init: pristine aerc 0.20.0 source

lib/format/format.go

@@ -0,0 +1,88 @@
+package format
+
+import (
+	"fmt"
+	"strings"
+	"time"
+	"unicode"
+
+	"github.com/emersion/go-message/mail"
+)
+
+const rfc5322specials string = `()<>[]:;@\,."`
+
+// AddressForHumans formats the address.
+// Meant for display purposes to the humans, not for sending over the wire.
+func AddressForHumans(a *mail.Address) string {
+	if a.Name != "" {
+		if strings.ContainsAny(a.Name, rfc5322specials) {
+			return fmt.Sprintf("\"%s\" <%s>",
+				strings.ReplaceAll(a.Name, "\"", "'"), a.Address)
+		} else {
+			return fmt.Sprintf("%s <%s>", a.Name, a.Address)
+		}
+	} else {
+		return fmt.Sprintf("<%s>", a.Address)
+	}
+}
+
+// FormatAddresses formats a list of addresses into a human readable string
+func FormatAddresses(l []*mail.Address) string {
+	formatted := make([]string, len(l))
+	for i, a := range l {
+		formatted[i] = AddressForHumans(a)
+	}
+	return strings.Join(formatted, ", ")
+}
+
+// CompactPath reduces a directory path into a compact form.  The directory
+// name will be split with the provided separator and each part will be reduced
+// to the first letter in its name: INBOX/01_WORK/PROJECT  will become
+// I/W/PROJECT.
+func CompactPath(name string, sep rune) (compact string) {
+	parts := strings.Split(name, string(sep))
+	for i, part := range parts {
+		if i == len(parts)-1 {
+			compact += part
+		} else {
+			if len(part) != 0 {
+				r := part[0]
+				for i := 0; i < len(part)-1; i++ {
+					if unicode.IsLetter(rune(part[i])) {
+						r = part[i]
+						break
+					}
+				}
+				compact += fmt.Sprintf("%c%c", r, sep)
+			} else {
+				compact += fmt.Sprintf("%c", sep)
+			}
+		}
+	}
+	return
+}
+
+func DummyIfZeroDate(date time.Time, format string, todayFormat string,
+	thisWeekFormat string, thisYearFormat string,
+) string {
+	if date.IsZero() {
+		return strings.Repeat("?", len(format))
+	}
+	year := date.Year()
+	day := date.YearDay()
+	now := time.Now()
+	thisYear := now.Year()
+	thisDay := now.YearDay()
+	if year == thisYear {
+		if day == thisDay && todayFormat != "" {
+			return date.Format(todayFormat)
+		}
+		if day > thisDay-7 && thisWeekFormat != "" {
+			return date.Format(thisWeekFormat)
+		}
+		if thisYearFormat != "" {
+			return date.Format(thisYearFormat)
+		}
+	}
+	return date.Format(format)
+}