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Allow file system operations to be tracked for safe deletion of untouched files #27

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Allow file system operations to be tracked for safe deletion of untouched files #27

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939d04e
Track System file operations for safe deletion of untouched files
justin-espedal Dec 1, 2021
8a34063
Allow system file operation tracking to be put in an unknown state.
justin-espedal Dec 1, 2021
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83 changes: 83 additions & 0 deletions src/hxp/System.hx
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,8 @@ class System
private static var _hostPlatform:HostPlatform;
private static var _isText:Map<String, Bool>;
private static var _processorCores:Int = 0;
private static var _unknownFileState:Bool = false;
private static var _untouchedFiles:Map<String, Bool>;

private static function __init__():Void
{
Expand Down Expand Up @@ -220,6 +222,8 @@ class System

if (textFile)
{
markFileAsTouched(destination);

// Log.info ("", " - \x1b[1mProcessing template file:\x1b[0m " + source + " \x1b[3;37m->\x1b[0m " + destination);

var fileContents:String = File.getContent(source);
Expand Down Expand Up @@ -276,6 +280,8 @@ class System
{
// allFiles.push (destination);

markFileAsTouched(destination);

if (!isNewer(source, destination))
{
return;
Expand Down Expand Up @@ -306,6 +312,25 @@ class System
}
}

public static function deleteUntouchedFiles():Void
{
if (_unknownFileState)
{
_unknownFileState = false;
_untouchedFiles = null;
return;
}

var paths = [for (key in _untouchedFiles.keys()) key];
paths.sort((a, b) -> a < b ? -1 : a > b ? 1 : 0);
for (path in paths)
{
Log.info("", " - \x1b[1mDeleting file:\x1b[0m " + path);
FileSystem.deleteFile(path);
}
_untouchedFiles = null;
}

public static function findTemplate(templatePaths:Array<String>, path:String, warnIfNotFound:Bool = true):String
{
var matches = findTemplates(templatePaths, path, warnIfNotFound);
Expand Down Expand Up @@ -351,6 +376,8 @@ class System

public static function deleteFile(path:String)
{
markFileAsTouched(path);

try
{
if (FileSystem.exists(path) && !FileSystem.isDirectory(path))
Expand Down Expand Up @@ -551,6 +578,8 @@ class System

public static function linkFile(source:String, destination:String, symbolic:Bool = true, overwrite:Bool = false)
{
markFileAsTouched(destination);

if (!isNewer(source, destination))
{
return;
Expand Down Expand Up @@ -592,6 +621,58 @@ class System
mkdir(directory);
}

public static function markAllFilesInFolderAsUntouched(path:String, pathsToIgnore:Array<String> = null):Void
{
_untouchedFiles = [];
_unknownFileState = false;
var ignoredPathsMap:Map<String, Bool> = null;
if (pathsToIgnore != null) ignoredPathsMap = [for (pathToIgnore in pathsToIgnore) path + "/" + pathToIgnore => true];
if (FileSystem.exists(path))
{
_scanFilesRecursively(path, _untouchedFiles, ignoredPathsMap);
}
}

private static function _scanFilesRecursively(path:String, map:Map<String, Bool>, ignorePaths:Map<String, Bool>):Void
{
for (file in FileSystem.readDirectory(path))
{
if (file.charAt(0) == ".")
{
continue;
}

var fullPath = Path.combine(path, file);

if (ignorePaths.exists(fullPath))
{
continue;
}

if (FileSystem.isDirectory(fullPath))
{
_scanFilesRecursively(fullPath, map, ignorePaths);
}
else
{
map.set(fullPath, true);
}
}
}

public static function markAllFilesStateAsUnknown():Void
{
_unknownFileState = true;
}

public static function markFileAsTouched(path:String):Void
{
if (_untouchedFiles != null)
{
_untouchedFiles.remove(path);
}
}

public static function mkdir(directory:String):Void
{
try
Expand Down Expand Up @@ -889,6 +970,7 @@ class System
}
else
{
markFileAsTouched(path);
FileSystem.deleteFile(path);
}
}
Expand Down Expand Up @@ -945,6 +1027,7 @@ class System
if (index > -1)
{
output = output.substr(0, index) + replacement + output.substr(index + replaceString.length);
markFileAsTouched(sourcePath);
File.saveContent(sourcePath, output);
}
}
Expand Down