/// <summary>
/// Formats the specified JSON file and overwrites it if necessary.
/// </summary>
/// <exception cref="ArgumentNullException">
/// path is null.
/// </exception>
/// <exception cref="IOException">
/// path is invalid.
/// </exception>
public static bool FormatFile(string path)
{
if (path == null)
{
throw new ArgumentNullException(nameof(path));
}
var srcFile = PathEx.Combine(path);
if (!PathEx.IsValidPath(srcFile))
{
throw new IOException();
}
var srcDir = Path.GetDirectoryName(srcFile);
var newFile = PathEx.GetUniquePath(srcDir, "tmp", ".json");
using (var sr = new StreamReader(srcFile))
{
using var fs = new FileStream(newFile, FileMode.Create);
int count;
var ca = new char[4096];
var depth = 0;
var isEscape = false;
var isValue = false;
while ((count = sr.Read(ca, 0, ca.Length)) > 0)
{
Format(fs, ca, count, ' ', ref depth, ref isEscape, ref isValue);
}
}
if (!FileEx.ContentIsEqual(srcFile, newFile))
{
return(FileEx.Move(newFile, srcFile, true));
}
FileEx.TryDelete(newFile);
return(false);
}
/// <summary>
/// Changes the character encoding of the specified file. This function
/// supports big files as well.
/// </summary>
/// <param name="file">
/// The file to change.
/// </param>
/// <param name="encoding">
/// The new character encoding. If <see langword="null"/>, <see cref="Ansi"/>
/// is used.
/// </param>
public static bool ChangeEncoding(string file, Encoding encoding = default)
{
if (string.IsNullOrEmpty(file))
{
return(false);
}
var srcFile = PathEx.Combine(file);
if (!File.Exists(srcFile))
{
return(false);
}
encoding ??= Ansi;
if (encoding.Equals(GetEncoding(srcFile)))
{
return(true);
}
try
{
var srcDir = Path.GetDirectoryName(srcFile);
var newFile = PathEx.Combine(srcDir, Path.GetRandomFileName());
File.Create(newFile).Close();
using (var sr = new StreamReader(srcFile))
{
using var sw = new StreamWriter(newFile, true, encoding);
int i;
var ca = new char[4096];
while ((i = sr.Read(ca, 0, ca.Length)) > 0)
{
sw.Write(ca, 0, i);
}
}
if (!FileEx.ContentIsEqual(srcFile, newFile))
{
return(FileEx.Move(newFile, srcFile, true));
}
FileEx.TryDelete(newFile);
return(false);
}
catch (Exception ex) when(ex.IsCaught())
{
Log.Write(ex);
return(false);
}
}
