From a04eca625d537ea899a4a88642c0a70e1d2032d5 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Fri, 27 Jan 2017 21:19:01 +0100
Subject: added m3u-playlist based walker


diff --git a/Makefile b/Makefile
index a6ea748..2a38381 100644
--- a/Makefile
+++ b/Makefile
@@ -31,6 +31,7 @@ EXECUTEABLE_HASHER := file-hasher
 
 LIBS := "code.helsinki.at/rhrd-go/rhimport" \
         "code.helsinki.at/rhrd-go/rddb" \
+        "github.com/ushis/m3u" \
         "golang.org/x/crypto/blake2b"
 
 
diff --git a/src/file-hasher/m3u-walker.go b/src/file-hasher/m3u-walker.go
new file mode 100644
index 0000000..5ecee19
--- /dev/null
+++ b/src/file-hasher/m3u-walker.go
@@ -0,0 +1,84 @@
+//
+//  pool-import
+//
+//  Copyright (C) 2016 Christian Pointner <equinox@helsinki.at>
+//
+//  This file is part of pool-import.
+//
+//  pool-import 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, either version 3 of the License, or
+//  any later version.
+//
+//  pool-import 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 pool-import. If not, see <http://www.gnu.org/licenses/>.
+//
+
+package main
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/ushis/m3u"
+)
+
+type M3u struct {
+	filename string
+	stdlog   *log.Logger
+}
+
+func (m *M3u) Walk(C chan<- string) (err error) {
+	defer close(C)
+
+	m.stdlog.Printf("loading m3u-playlist: %s", m.filename)
+
+	var file *os.File
+	if file, err = os.Open(m.filename); err != nil {
+		return
+	}
+	defer file.Close()
+
+	var old_wd string
+	if old_wd, err = os.Getwd(); err != nil {
+		return
+	}
+	defer func(wd string) {
+		if err := os.Chdir(wd); err != nil {
+			m.stdlog.Printf("ERROR: changing back to original working directory: %v", err)
+		}
+	}(old_wd)
+
+	if err = os.Chdir(filepath.Dir(m.filename)); err != nil {
+		m.stdlog.Printf("ERROR: changing to m3u directory: %v", err)
+	}
+
+	var playlist m3u.Playlist
+	if playlist, err = m3u.Parse(file); err != nil {
+		return
+	}
+
+	for _, track := range playlist {
+		if checkFileExt(track.Path) {
+			if absPath, err := filepath.Abs(track.Path); err != nil {
+				m.stdlog.Printf(" - skipping (%v):  %s", err, filepath.Base(track.Path))
+			} else {
+				C <- absPath
+			}
+		} else {
+			m.stdlog.Printf(" - skipping (unknown extension):  %s", filepath.Base(track.Path))
+		}
+	}
+	return nil
+}
+
+func NewM3u(path string, stdlog *log.Logger) (m *M3u) {
+	m = &M3u{filename: path, stdlog: stdlog}
+	return
+}
diff --git a/src/file-hasher/main.go b/src/file-hasher/main.go
index 051bb33..3e32b63 100644
--- a/src/file-hasher/main.go
+++ b/src/file-hasher/main.go
@@ -58,10 +58,12 @@ func main() {
 		stdlog.Println("********************************************")
 		h := NewHasher(4, stdlog) // TODO: make number of threads configurable
 		for _, root := range directories {
-			d := NewDir(root, stdlog)
+			src := NewDir(root, stdlog)
 			stdlog.Printf("*** hashing all the files in '%s'", root)
 			stdlog.Println("")
-			if err := h.ComputeHashes(d); err != nil {
+			if err := h.ComputeHashes(src); err != nil {
+				stdlog.Println("")
+				stdlog.Printf("ERROR: %v", err)
 				return
 			}
 			stdlog.Println("")
-- 
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