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/*
*
* Copyright (C) 2021 - Alberto Fanjul
*
* gitg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* gitg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with gitg. If not, see <http://www.gnu.org/licenses/>.
*/
using Ggit;
namespace Gitg
{
public class TextConv
{
public static bool has_textconv_command(Repository repository, DiffFile file)
{
return get_textconv_command(repository, file) != null;
}
private static string? get_textconv_command(Repository repository, DiffFile file)
{
string? command = null;
var path = file.get_path();
var diffattr = repository.get_attribute(path, "diff", Ggit.AttributeCheckFlags.FILE_THEN_INDEX);
if (diffattr != null)
{
var textconv_key = "diff.%s.textconv".printf(diffattr);
try
{
command = repository.get_config().get_string(textconv_key);
}
catch (GLib.Error e)
{
}
}
return command;
}
public static uint8[] get_textconv_content(Repository repository, DiffFile file)
{
uint8[] content = "".data;
if (file != null)
{
var oid = file.get_oid();
uint8[]? raw_content = null;
if (!oid.is_zero()) {
var blob = repository.lookup<Ggit.Blob>(oid);
raw_content = blob.get_raw_content();
}
content = get_textconv_content_from_raw(repository, file, raw_content);
}
return content;
}
public static uint8[] get_textconv_content_from_raw(Repository repository, DiffFile file, uint8[]? raw_content)
{
uint8[] content = "".data;
if (raw_content != null)
{
var command = get_textconv_command(repository, file);
if (command != null)
{
content = textconv(command, raw_content);
}
}
return content;
}
private static uint8[] textconv(string command, uint8[]? data)
{
var subproc = new Subprocess(STDIN_PIPE | STDOUT_PIPE, command, "/dev/stdin");
var input = new MemoryInputStream.from_data(data, GLib.free);
subproc.get_stdin_pipe ().splice (input, CLOSE_TARGET);
var end_pipe = subproc.get_stdout_pipe ();
var output = new DataInputStream (end_pipe);
string lines = "";
string? line = null;
do {
line = output.read_line();
if (line != null) {
line = line.replace("\f", "");
lines += line+"\n";
}
} while (line != null);
return lines.data;
}
}
}
// ex:ts=4 noet
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