vendor

vendor/github.com/lib/pq/internal/pgpass/pgpass.go

@@ -0,0 +1,71 @@
+package pgpass
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/lib/pq/internal/pqutil"
+)
+
+func PasswordFromPgpass(passfile, user, password, host, port, dbname string, passwordSet bool) string {
+	// Do not process .pgpass if a password was supplied.
+	if passwordSet {
+		return password
+	}
+
+	filename := pqutil.Pgpass(passfile)
+	if filename == "" {
+		return ""
+	}
+
+	fp, err := os.Open(filename)
+	if err != nil {
+		return ""
+	}
+	defer fp.Close()
+
+	scan := bufio.NewScanner(fp)
+	for scan.Scan() {
+		line := scan.Text()
+		if len(line) == 0 || line[0] == '#' {
+			continue
+		}
+		split := splitFields(line)
+		if len(split) != 5 {
+			continue
+		}
+
+		socket := host == "" || filepath.IsAbs(host) || strings.HasPrefix(host, "@")
+		if (split[0] == "*" || split[0] == host || (split[0] == "localhost" && socket)) &&
+			(split[1] == "*" || split[1] == port) &&
+			(split[2] == "*" || split[2] == dbname) &&
+			(split[3] == "*" || split[3] == user) {
+			return split[4]
+		}
+	}
+
+	return ""
+}
+
+func splitFields(s string) []string {
+	var (
+		fs  = make([]string, 0, 5)
+		f   = make([]rune, 0, len(s))
+		esc bool
+	)
+	for _, c := range s {
+		switch {
+		case esc:
+			f, esc = append(f, c), false
+		case c == '\\':
+			esc = true
+		case c == ':':
+			fs, f = append(fs, string(f)), f[:0]
+		default:
+			f = append(f, c)
+		}
+	}
+	return append(fs, string(f))
+}