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allow export/capture to the same target name, adding counter suffix

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This commit is contained in:
Thibault Deckers 2021-09-26 18:39:44 +09:00
parent 0848881738
commit 2c94311f05
1 changed files with 14 additions and 12 deletions
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26
android/app/src/main/kotlin/deckers/thibault/aves/model/provider/ImageProvider.kt
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@ -125,17 +125,13 @@ abstract class ImageProvider {
val page = if (sourceMimeType == MimeTypes.TIFF) pageId + 1 else pageId
desiredNameWithoutExtension += "_${page.toString().padStart(3, '0')}"
}
val desiredFileName = desiredNameWithoutExtension + extensionFor(exportMimeType)
if (File(destinationDir, desiredFileName).exists()) {
throw Exception("file with name=$desiredFileName already exists in destination directory")
}
val availableNameWithoutExtension = findAvailableFileNameWithoutExtension(destinationDir, desiredNameWithoutExtension, extensionFor(exportMimeType))
// the file created from a `TreeDocumentFile` is also a `TreeDocumentFile`
// but in order to open an output stream to it, we need to use a `SingleDocumentFile`
// through a document URI, not a tree URI
// note that `DocumentFile.getParentFile()` returns null if we did not pick a tree first
val destinationTreeFile = destinationDirDocFile.createFile(exportMimeType, desiredNameWithoutExtension)
val destinationTreeFile = destinationDirDocFile.createFile(exportMimeType, availableNameWithoutExtension)
val destinationDocFile = DocumentFileCompat.fromSingleUri(context, destinationTreeFile.uri)
if (isVideo(sourceMimeType)) {
@ -218,17 +214,13 @@ abstract class ImageProvider {
}
val captureMimeType = MimeTypes.JPEG
val desiredFileName = desiredNameWithoutExtension + extensionFor(captureMimeType)
if (File(destinationDir, desiredFileName).exists()) {
callback.onFailure(Exception("file with name=$desiredFileName already exists in destination directory"))
return
}
val availableNameWithoutExtension = findAvailableFileNameWithoutExtension(destinationDir, desiredNameWithoutExtension, extensionFor(captureMimeType))
// the file created from a `TreeDocumentFile` is also a `TreeDocumentFile`
// but in order to open an output stream to it, we need to use a `SingleDocumentFile`
// through a document URI, not a tree URI
// note that `DocumentFile.getParentFile()` returns null if we did not pick a tree first
val destinationTreeFile = destinationDirDocFile.createFile(captureMimeType, desiredNameWithoutExtension)
val destinationTreeFile = destinationDirDocFile.createFile(captureMimeType, availableNameWithoutExtension)
val destinationDocFile = DocumentFileCompat.fromSingleUri(context, destinationTreeFile.uri)
try {
@ -304,6 +296,16 @@ abstract class ImageProvider {
}
}
private fun findAvailableFileNameWithoutExtension(dir: String, desiredNameWithoutExtension: String, extension: String?): String {
var nameWithoutExtension = desiredNameWithoutExtension
var i = 0
while (File(dir, "$nameWithoutExtension$extension").exists()) {
i++
nameWithoutExtension = "$desiredNameWithoutExtension ($i)"
}
return nameWithoutExtension
}
suspend fun rename(context: Context, oldPath: String, oldMediaUri: Uri, mimeType: String, newFilename: String, callback: ImageOpCallback) {
val oldFile = File(oldPath)
val newFile = File(oldFile.parent, newFilename)