2 files changed, 57 insertions, 0 deletions
diff --git a/app/src/main/java/org/the_jk/cleversync/StringUtils.kt b/app/src/main/java/org/the_jk/cleversync/StringUtils.kt
new file mode 100644
index 0000000..6adea24
--- /dev/null
+++ b/app/src/main/java/org/the_jk/cleversync/StringUtils.kt
@@ -0,0 +1,32 @@
+package org.the_jk.cleversync
+
+object StringUtils {
+    fun split(input: String, delimiter: Char, keepEmpty: Boolean = true, limit: Int = 0): List<String> {
+        return buildList {
+            var offset = 0
+            var count = 0
+            while (true) {
+                val next = input.indexOf(delimiter, offset)
+                if (next == -1) {
+                    if (keepEmpty || offset < input.length) {
+                        if (limit > 0 && count == limit) {
+                            add("${removeLast()}${delimiter}${input.substring(offset)}")
+                            break
+                        }
+                        add(input.substring(offset))
+                    }
+                    break
+                }
+                if (keepEmpty || offset < next) {
+                    if (limit > 0 && count == limit) {
+                        add("${removeLast()}${delimiter}${input.substring(offset)}")
+                        break
+                    }
+                    add(input.substring(offset, next))
+                    count++
+                }
+                offset = next + 1
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/org/the_jk/cleversync/io/Utils.kt b/app/src/main/java/org/the_jk/cleversync/io/Utils.kt
new file mode 100644
index 0000000..0f9a2b7
--- /dev/null
+++ b/app/src/main/java/org/the_jk/cleversync/io/Utils.kt
@@ -0,0 +1,25 @@
+package org.the_jk.cleversync.io
+
+import org.the_jk.cleversync.StringUtils
+
+object Utils {
+    fun makeDirectories(directory: ModifiableDirectory, vararg names: String): ModifiableDirectory {
+        var current = directory
+        names.forEach { nameWithSlashes ->
+            StringUtils.split(nameWithSlashes, '/', keepEmpty = false).forEach { name ->
+                current = current.modifiableOpenDir(name) ?: current.createDirectory(name)
+            }
+        }
+        return current
+    }
+
+    fun openDirectory(directory: Directory, vararg names: String): Directory? {
+        var current = directory
+        names.forEach { nameWithSlashes ->
+            StringUtils.split(nameWithSlashes, '/', keepEmpty = false).forEach { name ->
+                current = current.openDir(name) ?: return null
+            }
+        }
+        return current
+    }
+}