krino: foundation — sexp reader, config language, init/new/check

1 files changed, 56 insertions, 0 deletions

diff --git a/cmd/krino/common.go b/cmd/krino/common.go
new file mode 100644
index 0000000..ea1e83d
--- /dev/null
+++ b/cmd/krino/common.go
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"strings"
+
+	"krino/internal/config"
+	"krino/internal/xdg"
+)
+
+// mainFile is -c FILE, or the default krino.conf.
+func mainFile(g *globals) string {
+	if g.conf != "" {
+		return xdg.Expand(g.conf)
+	}
+	return config.DefaultFile()
+}
+
+// usageError reports a command-line mistake and returns exit status 2.
+func usageError(stderr io.Writer, msg string) int {
+	fmt.Fprintf(stderr, "krino: %s\nrun 'krino -h' for help\n", msg)
+	return 2
+}
+
+// printDiags prints config problems with ~ for the home directory, then a count.
+func printDiags(stderr io.Writer, errs []*config.Diag) {
+	for _, e := range errs {
+		d := *e
+		d.File = xdg.Abbrev(d.File)
+		fmt.Fprintln(stderr, &d)
+	}
+	if len(errs) == 1 {
+		fmt.Fprintln(stderr, "krino: 1 problem found")
+	} else {
+		fmt.Fprintf(stderr, "krino: %d problems found\n", len(errs))
+	}
+}
+
+// describeActions renders a rule's actions briefly, as in: move PDF, stop.
+func describeActions(r *config.Rule) string {
+	var parts []string
+	for _, a := range r.Actions {
+		if a.Arg == "" {
+			parts = append(parts, a.Kind.String())
+		} else {
+			parts = append(parts, a.Kind.String()+" "+a.Arg)
+		}
+	}
+	if r.Stop {
+		parts = append(parts, "stop")
+	}
+	return strings.Join(parts, ", ")
+}