X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=cmd%2Fmeta4ra%2Fhash.go;fp=cmd%2Fmeta4ra%2Fhash.go;h=266aa61a59724db4797673acb45dc311b5069ef3;hb=be69a4fc0c240c2772a0f0bf0955b39783e4c48a;hp=0000000000000000000000000000000000000000;hpb=ce902a58a32f42801603475c67dd75da86d4502a;p=meta4ra.git

diff --git a/cmd/meta4ra/hash.go b/cmd/meta4ra/hash.go
new file mode 100644
index 0000000..266aa61
--- /dev/null
+++ b/cmd/meta4ra/hash.go
@@ -0,0 +1,63 @@
+// meta4ra -- Metalink 4.0 utilities
+// Copyright (C) 2021-2024 Sergey Matveev <stargrave@stargrave.org>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"strings"
+
+	meta4ra "go.stargrave.org/meta4ra/internal"
+)
+
+func runHash() {
+	hashes := flag.String("hashes", meta4ra.HashesDefault,
+		"hash-name:commandline[,...]")
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(),
+			"Usage: %s [-hashes ...] < data | read hash name\n", os.Args[0])
+		flag.PrintDefaults()
+		fmt.Fprint(flag.CommandLine.Output(), `
+Only the first hash from -hashes will be used.
+`)
+	}
+	flag.Parse()
+
+	hsh := *hashes
+	if i := strings.Index(hsh, ","); i != -1 {
+		hsh = hsh[:i]
+	}
+	hasher, err := meta4ra.NewHasher(hsh)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	if err = hasher.Start(); err != nil {
+		log.Fatalln(err)
+	}
+	if _, err = io.Copy(hasher, bufio.NewReaderSize(
+		os.Stdin, meta4ra.BufLen)); err != nil {
+		log.Fatalln(err)
+	}
+	sums, err := hasher.Sums()
+	if err != nil {
+		log.Fatalln(err)
+	}
+	fmt.Println(sums[0].Hash, sums[0].Type)
+}