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/* /////////////////////////////////////////////////////////////////////////
* File: stlsoft/filesystem/searchspec_sequence.hpp
*
* Purpose: Contains the searchspec_sequence template class, and ANSI
* and Unicode specialisations thereof.
*
* Thanks to: Jon Papaioannou for spotting a character encoding error in
* one of the typedefs
*
* Created: 1st May 2004
* Updated: 10th August 2009
*
* Home: http://stlsoft.org/
*
* Copyright (c) 2004-2009, Matthew Wilson and Synesis Software
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
* any contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ////////////////////////////////////////////////////////////////////// */
/** \file stlsoft/filesystem/searchspec_sequence.hpp
*
* \brief [C++ only] Definition of the stlsoft::searchspec_sequence class
* template
* (\ref group__library__filesystem "File System" Library).
*/
#ifndef STLSOFT_INCL_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE
#define STLSOFT_INCL_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE
#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
# define STLSOFT_VER_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE_MAJOR 4
# define STLSOFT_VER_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE_MINOR 1
# define STLSOFT_VER_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE_REVISION 6
# define STLSOFT_VER_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE_EDIT 59
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
/* /////////////////////////////////////////////////////////////////////////
* Compatibility
*/
/*
[Incompatibilies-start]
STLSOFT_COMPILER_IS_MSVC: _MSC_VER<1200
STLSOFT_COMPILER_IS_WATCOM:
[Incompatibilies-end]
*/
/* /////////////////////////////////////////////////////////////////////////
* Includes
*/
#ifndef STLSOFT_INCL_STLSOFT_H_STLSOFT
# include <stlsoft/stlsoft.h>
#endif /* !STLSOFT_INCL_STLSOFT_H_STLSOFT */
#if defined(STLSOFT_COMPILER_IS_MSVC) && \
_MSC_VER < 1200
# error stlsoft/filesystem/searchspec_sequence.hpp is not compatible with Visual C++ 5.0 or earlier
#endif /* compiler */
#ifndef STLSOFT_INCL_STLSOFT_STRING_HPP_SIMPLE_STRING
# include <stlsoft/string/simple_string.hpp>
#endif /* !STLSOFT_INCL_STLSOFT_STRING_HPP_SIMPLE_STRING */
#ifndef STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TOKENISER
# include <stlsoft/string/string_tokeniser.hpp>
#endif /* !STLSOFT_INCL_STLSOFT_STRING_HPP_STRING_TOKENISER */
#ifndef STLSOFT_COMPILER_IS_WATCOM
# ifndef STLSOFT_INCL_STLSOFT_UTIL_STD_HPP_ITERATOR_HELPER
# include <stlsoft/util/std/iterator_helper.hpp>
# endif /* !STLSOFT_INCL_STLSOFT_UTIL_STD_HPP_ITERATOR_HELPER */
#endif /* compiler */
#ifndef STLSOFT_INCL_STLSOFT_COLLECTIONS_UTIL_HPP_COLLECTIONS
# include <stlsoft/collections/util/collections.hpp>
#endif /* !STLSOFT_INCL_STLSOFT_COLLECTIONS_UTIL_HPP_COLLECTIONS */
/* /////////////////////////////////////////////////////////////////////////
* Pre-processor
*
* Definition of the
*/
/* /////////////////////////////////////////////////////////////////////////
* Namespace
*/
#ifndef _STLSOFT_NO_NAMESPACE
namespace stlsoft
{
#endif /* _STLSOFT_NO_NAMESPACE */
/* /////////////////////////////////////////////////////////////////////////
* Functions
*/
template <ss_typename_param_k T>
inline void call_set_null(T *&pt, void (T::*F)())
{
STLSOFT_ASSERT(NULL != pt);
(pt->*F)();
pt = NULL;
}
/* /////////////////////////////////////////////////////////////////////////
* Classes
*/
/** \brief Provides multi-pattern functionality over a file-system search sequence class
*
* \ingroup group__library__filesystem
*/
template <ss_typename_param_k S>
class searchspec_sequence
: public stl_collection_tag
{
/// \name Member Types
/// @{
public:
/// The underlying find sequence type
typedef S find_sequence_type;
/// The current parameterisation of the type
typedef searchspec_sequence<S> class_type;
private:
typedef searchspec_sequence<S> outer_class_type;
typedef ss_typename_type_k find_sequence_type::traits_type traits_type;
public:
/// The character type
typedef ss_typename_type_k find_sequence_type::char_type char_type;
/// The value type
typedef ss_typename_type_k find_sequence_type::value_type value_type;
/// The size type
typedef ss_typename_type_k find_sequence_type::size_type size_type;
/// The non-mutable (const) reference type
typedef ss_typename_type_k find_sequence_type::const_reference const_reference;
/// The non-mutating (const) iterator type
class const_iterator;
private:
typedef basic_simple_string<char_type> string_type;
// TODO: Have all filesystem_traits that have a fixed length derive from a tag type, so that we can parameterise
// based on that. Then reinstate the string type discrimination based on the traits
// typedef basic_static_string<char_type, traits_type::maxPathLength> string_type;
typedef string_tokeniser<string_type, char_type> tokeniser_type;
/// @}
/// \name Construction
/// @{
public:
/// Creates a search sequence for the given search specification and delimiter
///
/// \param searchSpec The multi-filter search specification, e.g. "*.cpp", "*.d:makefile:*.java"
/// \param delimiter The delimiter to use, e.g. ':'
///
/// \note Assumes the current directory
searchspec_sequence(char_type const* searchSpec, char_type delimiter)
: m_rootDir(get_root_dir())
, m_searchSpec(searchSpec)
, m_delimiter(delimiter)
, m_flags(0)
{}
/// Creates a search sequence for the given search specification, delimiter and flags
///
/// \param searchSpec The multi-filter search specification, e.g. "*.cpp", "*.d:makefile:*.java"
/// \param delimiter The delimiter to use, e.g. ':'
/// \param flags Flags specific to the underlying sequence
///
/// \note Assumes the current directory
searchspec_sequence(char_type const* searchSpec, char_type delimiter, ss_int_t flags)
: m_rootDir(get_root_dir())
, m_searchSpec(searchSpec)
, m_delimiter(delimiter)
, m_flags(flags)
{}
/// Creates a search sequence for the given root directory, search specification and delimiter
///
/// \param rootDir The root directory of the search
/// \param searchSpec The multi-filter search specification, e.g. "*.cpp", "*.d:makefile:*.java"
/// \param delimiter The delimiter to use, e.g. ':'
searchspec_sequence(char_type const* rootDir, char_type const* searchSpec, char_type delimiter)
: m_rootDir(rootDir)
, m_searchSpec(searchSpec)
, m_delimiter(delimiter)
, m_flags(0)
{}
/// Creates a search sequence for the given root directory, search specification, delimiter and flags
///
/// \param rootDir The root directory of the search
/// \param searchSpec The multi-filter search specification, e.g. "*.cpp", "*.d:makefile:*.java"
/// \param delimiter The delimiter to use, e.g. ':'
/// \param flags Flags specific to the underlying sequence
searchspec_sequence(char_type const* rootDir, char_type const* searchSpec, char_type delimiter, ss_int_t flags)
: m_rootDir(rootDir)
, m_searchSpec(searchSpec)
, m_delimiter(delimiter)
, m_flags(flags)
{}
/// @}
/// \name Implementation
/// @{
private:
struct search_state
{
string_type m_rootDir;
ss_int_t m_flags;
tokeniser_type m_tokens;
ss_typename_type_k tokeniser_type::const_iterator m_tokensNext;
ss_typename_type_k tokeniser_type::const_iterator m_tokensEnd;
find_sequence_type *m_entries;
ss_typename_type_k find_sequence_type::const_iterator m_entriesNext;
ss_typename_type_k find_sequence_type::const_iterator m_entriesEnd;
ss_sint32_t m_cRefs;
private:
search_state(char_type const* rootDir, char_type const* searchSpec, char_type delimiter, ss_int_t flags)
: m_rootDir(rootDir)
, m_flags(flags)
, m_tokens(searchSpec, delimiter)
, m_tokensNext(m_tokens.begin())
, m_tokensEnd(m_tokens.end())
#if defined(STLSOFT_COMPILER_IS_VECTORC)
, m_entries(new find_sequence_type(m_rootDir.c_str(), (*m_tokensNext).c_str(), m_flags))
#else /* ? compiler */
, m_entries(new find_sequence_type(c_str_ptr(m_rootDir), c_str_ptr(*m_tokensNext), m_flags))
#endif /* compiler */
, m_entriesNext(m_entries->begin())
, m_entriesEnd(m_entries->end())
, m_cRefs(1)
{
while(m_entriesNext == m_entriesEnd)
{
++m_tokensNext;
if(m_tokensNext == m_tokensEnd)
{
break;
}
else
{
STLSOFT_ASSERT(NULL != m_entries);
stlsoft_destroy_instance_fn(m_entries);
#if defined(STLSOFT_COMPILER_IS_VECTORC)
m_entries = new(m_entries) find_sequence_type(m_rootDir.c_str(), (*m_tokensNext).c_str(), m_flags);
#else /* ? compiler */
m_entries = new(m_entries) find_sequence_type(c_str_ptr(m_rootDir), c_str_ptr(*m_tokensNext), m_flags);
#endif /* compiler */
m_entriesEnd = m_entries->end();
m_entriesNext = m_entries->begin();
}
}
}
#if defined(STLSOFT_COMPILER_IS_MSVC) && \
_MSC_VER < 1300
friend class const_iterator;
#endif /* compiler */
public:
static search_state *create(char_type const* rootDir, char_type const* searchSpec, char_type delimiter, ss_int_t flags)
{
search_state *ss = new search_state(rootDir, searchSpec, delimiter, flags);
if(ss->m_tokensNext == ss->m_tokensEnd)
{
delete ss;
ss = NULL;
}
return ss;
}
public:
bool next()
{
if(m_tokensNext == m_tokensEnd)
{
return false;
}
STLSOFT_ASSERT(m_tokensNext != m_tokensEnd);
STLSOFT_ASSERT(NULL != m_entries || m_tokensNext == m_tokensEnd);
// We are doing two enumerations here.
//
// The outer enumeration is over the tokens, the
// inner is over the file entries.
++m_entriesNext;
while(m_entriesNext == m_entriesEnd)
{
++m_tokensNext;
if(m_tokensNext == m_tokensEnd)
{
return false;
}
else
{
STLSOFT_ASSERT(NULL != m_entries);
stlsoft_destroy_instance_fn(m_entries);
#if defined(STLSOFT_COMPILER_IS_VECTORC)
m_entries = new(m_entries) find_sequence_type(m_rootDir.c_str(), (*m_tokensNext).c_str(), m_flags);
#else /* ? compiler */
m_entries = new(m_entries) find_sequence_type(c_str_ptr(m_rootDir), c_str_ptr(*m_tokensNext), m_flags);
#endif /* compiler */
m_entriesEnd = m_entries->end();
m_entriesNext = m_entries->begin();
}
}
return true;
}
void Release()
{
if(0 == --m_cRefs)
{
delete this;
}
}
#if defined(STLSOFT_CF_COMPILER_WARNS_NO_PUBLIC_DTOR)
protected:
#else /* ? STLSOFT_CF_COMPILER_WARNS_NO_PUBLIC_DTOR */
private:
#endif /* STLSOFT_CF_COMPILER_WARNS_NO_PUBLIC_DTOR */
~search_state() stlsoft_throw_0()
{
delete m_entries;
}
};
/// @}
/// \name Iteration
/// @{
public:
/// The const_iterator type for the searchspec_sequence
class const_iterator
{
private:
typedef const_iterator class_type;
private:
friend class searchspec_sequence<S>;
const_iterator(char_type const* rootDir, char_type const* searchSpec, char_type delimiter, ss_int_t flags)
: m_searchState(search_state::create(rootDir, searchSpec, delimiter, flags))
{}
public:
/// Default constructor
const_iterator()
: m_searchState(NULL)
{}
/// Destructor
~const_iterator() stlsoft_throw_0()
{
if(NULL != m_searchState)
{
m_searchState->Release();
}
}
/// Copy constructor
const_iterator(class_type const& rhs)
: m_searchState(rhs.m_searchState)
{
if(NULL != m_searchState)
{
++m_searchState->m_cRefs;
}
}
class_type& operator =(class_type const& rhs)
{
if(NULL != m_searchState)
{
m_searchState->Release();
}
m_searchState = rhs.m_searchState;
if(NULL != m_searchState)
{
++m_searchState->m_cRefs;
}
return *this;
}
public:
class_type& operator ++()
{
STLSOFT_ASSERT(NULL != m_searchState);
if(!m_searchState->next())
{
#if defined(STLSOFT_COMPILER_IS_MSVC) && \
_MSC_VER < 1300
m_searchState->Release();
m_searchState = NULL;
#else /* ? compiler */
call_set_null(m_searchState, &search_state::Release);
#endif /* compiler */
}
return *this;
}
class_type operator ++(int)
{
class_type ret(*this);
operator ++();
return ret;
}
/// Dereference to return the value at the current position
const value_type operator *() const
{
STLSOFT_ASSERT(NULL != m_searchState);
return *m_searchState->m_entriesNext;
}
ss_bool_t operator ==(class_type const& rhs) const
{
// Only evaluate the same when both are at their ends
return (NULL == m_searchState) && (NULL == rhs.m_searchState);
}
ss_bool_t operator !=(class_type const& rhs) const
{
return !operator ==(rhs);
}
private:
search_state *m_searchState;
};
/// @}
/// \name Iteration
/// @{
public:
/// Begins the iteration
///
/// \return An iterator representing the start of the sequence
const_iterator begin() const
{
#if defined(STLSOFT_COMPILER_IS_VECTORC)
return const_iterator(m_rootDir.c_str(), (m_searchSpec).c_str(), m_delimiter, m_flags);
#else /* ? compiler */
return const_iterator(c_str_ptr(m_rootDir), c_str_ptr(m_searchSpec), m_delimiter, m_flags);
#endif /* compiler */
}
/// Ends the iteration
///
/// \return An iterator representing the end of the sequence
const_iterator end() const
{
return const_iterator();
}
/// @}
/// \name Attributes
/// @{
public:
/// \brief Indicates whether the sequence is empty
ss_bool_t empty() const
{
return begin() == end();
}
/// @}
/// \name Implementation
/// @{
private:
static char_type const* get_root_dir()
{
static char_type s_rootDir[2] = { '.', '\0' };
return s_rootDir;
}
/// @}
/// \name Members
/// @{
private:
string_type m_rootDir;
string_type m_searchSpec;
char_type m_delimiter;
ss_int_t m_flags;
/// @}
};
////////////////////////////////////////////////////////////////////////////
// Unit-testing
#ifdef STLSOFT_UNITTEST
# include "./unittest/searchspec_sequence_unittest_.h"
#endif /* STLSOFT_UNITTEST */
////////////////////////////////////////////////////////////////////////////
// Implementation
#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
/* ////////////////////////////////////////////////////////////////////// */
#ifndef _STLSOFT_NO_NAMESPACE
} // namespace stlsoft
#endif /* _STLSOFT_NO_NAMESPACE */
/* ////////////////////////////////////////////////////////////////////// */
#endif /* !STLSOFT_INCL_STLSOFT_FILESYSTEM_HPP_SEARCHSPEC_SEQUENCE */
/* ///////////////////////////// end of file //////////////////////////// */