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depot_query: move 'Archive' utils to include/depot

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This enables other depot tools to use the same utilities.
This commit is contained in:
Norman Feske 2017-12-18 16:05:45 +01:00 committed by Christian Helmuth
parent 9a671cf8bc
commit 9e0dafbd93
2 changed files with 97 additions and 72 deletions
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95
repos/gems/include/depot/archive.h Normal file
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@ -0,0 +1,95 @@
/*
* \brief Utilities to handle depot-archive paths
* \author Norman Feske
* \date 2017-12-18
*/
/*
* Copyright (C) 2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _INCLUDE__DEPOT__ARCHIVE_H_
#define _INCLUDE__DEPOT__ARCHIVE_H_
/* Genode includes */
#include <util/string.h>
namespace Depot {
using namespace Genode;
struct Archive;
}
struct Depot::Archive
{
typedef String<100> Path;
typedef String<64> User;
typedef String<80> Name;
typedef String<40> Version;
enum Type { PKG, RAW, SRC };
struct Unknown_archive_type : Exception { };
/**
* Return Nth path element
*
* The first path element corresponds to n == 0.
*/
template <typename STRING>
static STRING _path_element(Path const &path, unsigned n)
{
char const *s = path.string();
/* skip 'n' path elements */
for (; n > 0; n--) {
/* search '/' */
while (*s && *s != '/')
s++;
if (*s == 0)
return STRING();
/* skip '/' */
s++;
}
/* find '/' marking the end of the path element */
unsigned i = 0;
while (s[i] != 0 && s[i] != '/')
i++;
return STRING(Cstring(s, i));
}
/**
* Return archive user of depot-local path
*/
static User user(Path const &path) { return _path_element<User>(path, 0); }
/**
* Return archive type of depot-local path
*
* \throw Unknown_archive_type
*/
static Type type(Path const &path)
{
typedef String<8> Name;
Name const name = _path_element<Name>(path, 1);
if (name == "src") return SRC;
if (name == "pkg") return PKG;
if (name == "raw") return RAW;
throw Unknown_archive_type();
}
static Name name (Path const &path) { return _path_element<Name>(path, 2); }
static Version version(Path const &path) { return _path_element<Name>(path, 3); }
};
#endif /* _INCLUDE__DEPOT__ARCHIVE_H_ */

74
repos/gems/src/app/depot_query/main.cc
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@ -17,11 +17,11 @@
#include <base/attached_rom_dataspace.h> #include <base/attached_rom_dataspace.h>
#include <os/reporter.h> #include <os/reporter.h>
#include <gems/vfs.h> #include <gems/vfs.h>
#include <depot/archive.h>
namespace Depot_query { namespace Depot_query {
using namespace Genode; using namespace Depot;
struct Recursion_limit; struct Recursion_limit;
struct Archive;
struct Dependencies; struct Dependencies;
struct Main; struct Main;
} }
@ -62,76 +62,6 @@ class Depot_query::Recursion_limit : Noncopyable
}; };
struct Depot_query::Archive
{
typedef String<100> Path;
typedef String<64> User;
typedef String<80> Name;
typedef String<40> Version;
enum Type { PKG, RAW, SRC };
struct Unknown_archive_type : Exception { };
/**
* Return Nth path element
*
* The first path element corresponds to n == 0.
*/
template <typename STRING>
static STRING _path_element(Path const &path, unsigned n)
{
char const *s = path.string();
/* skip 'n' path elements */
for (; n > 0; n--) {
/* search '/' */
while (*s && *s != '/')
s++;
if (*s == 0)
return STRING();
/* skip '/' */
s++;
}
/* find '/' marking the end of the path element */
unsigned i = 0;
while (s[i] != 0 && s[i] != '/')
i++;
return STRING(Cstring(s, i));
}
/**
* Return archive user of depot-local path
*/
static User user(Path const &path) { return _path_element<User>(path, 0); }
/**
* Return archive type of depot-local path
*
* \throw Unknown_archive_type
*/
static Type type(Path const &path)
{
typedef String<8> Name;
Name const name = _path_element<Name>(path, 1);
if (name == "src") return SRC;
if (name == "pkg") return PKG;
if (name == "raw") return RAW;
throw Unknown_archive_type();
}
static Name name (Path const &path) { return _path_element<Name>(path, 2); }
static Version version(Path const &path) { return _path_element<Name>(path, 3); }
};
/** /**
* Collection of dependencies * Collection of dependencies
* *