1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#include "file_path.h"
using namespace zen;
std::optional<PathComponents> zen::parsePathComponents(const Zstring& itemPath)
{
auto doParse = [&](int sepCountVolumeRoot, bool rootWithSep) -> std::optional<PathComponents>
{
const Zstring itemPathFmt = appendSeparator(itemPath); //simplify analysis of root without separator, e.g. \\server-name\share
int sepCount = 0;
for (auto it = itemPathFmt.begin(); it != itemPathFmt.end(); ++it)
if (*it == FILE_NAME_SEPARATOR)
if (++sepCount == sepCountVolumeRoot)
{
Zstring rootPath(itemPathFmt.begin(), rootWithSep ? it + 1 : it);
Zstring relPath(it + 1, itemPathFmt.end());
trim(relPath, true, true, [](Zchar c) { return c == FILE_NAME_SEPARATOR; });
return PathComponents({rootPath, relPath});
}
return {};
};
std::optional<PathComponents> pc; //"/media/zenju/" and "/Volumes/" should not fail to parse
if (!pc && startsWith(itemPath, "/mnt/")) //e.g. /mnt/DEVICE_NAME
pc = doParse(3 /*sepCountVolumeRoot*/, false /*rootWithSep*/);
if (!pc && startsWith(itemPath, "/media/")) //Ubuntu: e.g. /media/zenju/DEVICE_NAME
if (const char* username = ::getenv("USER"))
if (startsWith(itemPath, std::string("/media/") + username + "/"))
pc = doParse(4 /*sepCountVolumeRoot*/, false /*rootWithSep*/);
if (!pc && startsWith(itemPath, "/run/media/")) //CentOS, Suse: e.g. /run/media/zenju/DEVICE_NAME
if (const char* username = ::getenv("USER"))
if (startsWith(itemPath, std::string("/run/media/") + username + "/"))
pc = doParse(5 /*sepCountVolumeRoot*/, false /*rootWithSep*/);
if (!pc && startsWith(itemPath, "/run/user/")) //Ubuntu, e.g.: /run/user/1000/gvfs/smb-share:server=192.168.62.145,share=folder
{
Zstring tmp(itemPath.begin() + strLength("/run/user/"), itemPath.end());
tmp = beforeFirst(tmp, "/gvfs/", IfNotFoundReturn::none);
if (!tmp.empty() && std::all_of(tmp.begin(), tmp.end(), [](char c) { return isDigit(c); }))
/**/pc = doParse(6 /*sepCountVolumeRoot*/, false /*rootWithSep*/);
}
if (!pc && startsWith(itemPath, "/"))
pc = doParse(1 /*sepCountVolumeRoot*/, true /*rootWithSep*/);
return pc;
}
std::optional<Zstring> zen::getParentFolderPath(const Zstring& itemPath)
{
if (const std::optional<PathComponents> comp = parsePathComponents(itemPath))
{
if (comp->relPath.empty())
return std::nullopt;
const Zstring parentRelPath = beforeLast(comp->relPath, FILE_NAME_SEPARATOR, IfNotFoundReturn::none);
if (parentRelPath.empty())
return comp->rootPath;
return appendSeparator(comp->rootPath) + parentRelPath;
}
assert(false);
return std::nullopt;
}
|
