/// <summary>
/// Smart copy from 'src' to 'dst'. Loosely like XCopy.
/// 'src' can be a single file, a comma separated list of files, or a directory<para/>
/// 'dst' can be a
/// if 'src' is a directory, </summary>
public static void Copy(string src, string dst, bool overwrite = false, bool only_if_modified = false, bool ignore_non_existing = false, Action <string>?feedback = null, bool show_unchanged = false)
{
var src_is_dir = Path_.IsDirectory(src);
var dst_is_dir = Path_.IsDirectory(dst) || dst.EndsWith("/") || dst.EndsWith("\\") || src_is_dir;
// Find the names of the source files to copy
var files = new List <string>();
if (src_is_dir)
{
files = Path_.EnumFileSystem(src, SearchOption.AllDirectories).Select(x => x.FullName).ToList();
}
else if (Path_.FileExists(src))
{
files = new List <string>()
{
src
}
}
;
else if (src.Contains('*') || src.Contains('?'))
{
files = Path_.EnumFileSystem(src, SearchOption.AllDirectories, new Pattern(EPattern.Wildcard, src).RegexString).Select(x => x.FullName).ToList();
}
else if (!ignore_non_existing)
{
throw new FileNotFoundException($"'{src}' does not exist");
}
// If the 'src' represents multiple files, 'dst' must be a directory
if (src_is_dir || files.Count > 1)
{
// if 'dst' doesn't exist, assume it's a directory
if (!Path_.DirExists(dst))
{
dst_is_dir = true;
}
// or if it does exist, check that it is actually a directory
else if (!dst_is_dir)
{
throw new FileNotFoundException($"'{dst}' is not a valid directory");
}
}
// Ensure that 'dstdir' exists. (Canonicalise fixes the case where 'dst' is a drive, e.g. 'C:\')
var dstdir = Path_.Canonicalise((dst_is_dir ? dst : Path_.Directory(dst)).TrimEnd('/', '\\'));
if (!Path_.DirExists(dstdir))
{
Directory.CreateDirectory(dstdir);
}
// Copy the file(s) to 'dst'
foreach (var srcfile in files)
{
// If 'dst' is a directory, use the same filename from 'srcfile'
var dstfile = string.Empty;
if (dst_is_dir)
{
var spath = src_is_dir ? Path_.RelativePath(src, srcfile) : Path_.FileName(srcfile);
dstfile = Path_.CombinePath(dstdir, spath);
}
else
{
dstfile = dst;
}
// If 'srcfile' is a directory, ensure the directory exists at the destination
if (Path_.IsDirectory(srcfile))
{
if (!dst_is_dir)
{
throw new Exception($"ERROR: {dst} is not a directory");
}
// Create the directory at the destination
if (!Path_.DirExists(dstfile))
{
System.IO.Directory.CreateDirectory(dstfile);
}
if (feedback != null)
{
feedback(srcfile + " --> " + dstfile);
}
}
else
{
// Copy if modified or always based on the flag
if (only_if_modified && !Path_.DiffContent(srcfile, dstfile))
{
if (feedback != null && show_unchanged)
{
feedback(srcfile + " --> unchanged");
}
continue;
}
// Ensure the directory path exists
var d = Path_.Directory(dstfile);
var f = Path_.FileName(dstfile);
if (!Path_.DirExists(d))
{
System.IO.Directory.CreateDirectory(d);
}
if (feedback != null)
{
feedback(srcfile + " --> " + dstfile);
}
File.Copy(srcfile, dstfile, overwrite);
}
}
}
