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moved regular expression classes into a separate namespace

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This commit is contained in:
mr-alice 2016-09-13 12:05:22 +02:00
parent e9418bb5c6
commit a2e34f9cc6
25 changed files with 439 additions and 426 deletions
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2
libretroshare/src/file_sharing/dir_hierarchy.cc
View file

@ -595,7 +595,7 @@ bool InternalFileHierarchyStorage::searchHash(const RsFileHash& hash,std::list<D
return false;
}
int InternalFileHierarchyStorage::searchBoolExp(Expression * exp, std::list<DirectoryStorage::EntryIndex> &results) const
int InternalFileHierarchyStorage::searchBoolExp(RsRegularExpression::Expression * exp, std::list<DirectoryStorage::EntryIndex> &results) const
{
#ifdef TODO
for(std::map<RsFileHash,DirectoryStorage::EntryIndex>::const_iterator it(mFileHashes.begin());it!=mFileHashes.end();++it)

2
libretroshare/src/file_sharing/dir_hierarchy.h
View file

@ -140,7 +140,7 @@ public:
// search. SearchHash is logarithmic. The other two are linear.
bool searchHash(const RsFileHash& hash,std::list<DirectoryStorage::EntryIndex>& results);
int searchBoolExp(Expression * exp, std::list<DirectoryStorage::EntryIndex> &results) const ;
int searchBoolExp(RsRegularExpression::Expression * exp, std::list<DirectoryStorage::EntryIndex> &results) const ;
int searchTerms(const std::list<std::string>& terms, std::list<DirectoryStorage::EntryIndex> &results) const ;
bool check(std::string& error_string) const ;// checks consistency of storage.

2
libretroshare/src/file_sharing/directory_storage.cc
View file

@ -203,7 +203,7 @@ int DirectoryStorage::searchTerms(const std::list<std::string>& terms, std::list
RS_STACK_MUTEX(mDirStorageMtx) ;
return mFileHierarchy->searchTerms(terms,results);
}
int DirectoryStorage::searchBoolExp(Expression * exp, std::list<EntryIndex> &results) const
int DirectoryStorage::searchBoolExp(RsRegularExpression::Expression * exp, std::list<EntryIndex> &results) const
{
RS_STACK_MUTEX(mDirStorageMtx) ;
return mFileHierarchy->searchBoolExp(exp,results);

2
libretroshare/src/file_sharing/directory_storage.h
View file

@ -50,7 +50,7 @@ class DirectoryStorage
void save() const ;
virtual int searchTerms(const std::list<std::string>& terms, std::list<EntryIndex> &results) const ;
virtual int searchBoolExp(Expression * exp, std::list<EntryIndex> &results) const ;
virtual int searchBoolExp(RsRegularExpression::Expression * exp, std::list<EntryIndex> &results) const ;
virtual int searchHash(const RsFileHash& hash, std::list<EntryIndex> &results) const ;
bool getDirUpdateTS(EntryIndex index,time_t& recurs_max_modf_TS,time_t& local_update_TS) ;

2
libretroshare/src/file_sharing/p3filelists.cc
View file

@ -814,7 +814,7 @@ int p3FileDatabase::SearchKeywords(const std::list<std::string>& keywords, std::
return filterResults(firesults,results,flags,client_peer_id) ;
}
int p3FileDatabase::SearchBoolExp(Expression *exp, std::list<DirDetails>& results,FileSearchFlags flags,const RsPeerId& client_peer_id) const
int p3FileDatabase::SearchBoolExp(RsRegularExpression::Expression *exp, std::list<DirDetails>& results,FileSearchFlags flags,const RsPeerId& client_peer_id) const
{
RS_STACK_MUTEX(mFLSMtx) ;

2
libretroshare/src/file_sharing/p3filelists.h
View file

@ -103,7 +103,7 @@ class p3FileDatabase: public p3Service, public p3Config, public ftSearch //, pub
virtual bool findLocalFile(const RsFileHash& hash,FileSearchFlags flags,const RsPeerId& peer_id, std::string &fullpath, uint64_t &size,FileStorageFlags& storage_flags,std::list<std::string>& parent_groups) const;
virtual int SearchKeywords(const std::list<std::string>& keywords, std::list<DirDetails>& results,FileSearchFlags flags,const RsPeerId& peer_id) ;
virtual int SearchBoolExp(Expression *exp, std::list<DirDetails>& results,FileSearchFlags flags,const RsPeerId& peer_id) const ;
virtual int SearchBoolExp(RsRegularExpression::Expression *exp, std::list<DirDetails>& results,FileSearchFlags flags,const RsPeerId& peer_id) const ;
// ftSearch
virtual bool search(const RsFileHash &hash, FileSearchFlags hintflags, FileInfo &info) const;

331
libretroshare/src/file_sharing/rsexpr.cc
View file

@ -26,6 +26,7 @@
#include "dbase/findex.h"
#include "retroshare/rsexpr.h"
#include "retroshare/rstypes.h"
#include <algorithm>
#include <functional>
@ -34,33 +35,35 @@ eval functions of relational expressions.
******************************************************************************************/
namespace RsRegularExpression
{
template<>
void RelExpression<int>::linearize(LinearizedExpression& e) const
{
e._ints.push_back(Op) ;
e._ints.push_back(LowerValue) ;
e._ints.push_back(HigherValue) ;
e._ints.push_back(Op) ;
e._ints.push_back(LowerValue) ;
e._ints.push_back(HigherValue) ;
}
bool DateExpression::eval(FileEntry *file)
bool DateExpression::eval(const ExpFileEntry& file)
{
return evalRel(file->modtime);
return evalRel(file.file_modtime());
}
bool SizeExpressionMB::eval(FileEntry *file)
bool SizeExpressionMB::eval(const ExpFileEntry& file)
{
return evalRel((int)(file->size/(uint64_t)(1024*1024)));
return evalRel((int)(file.file_size()/(uint64_t)(1024*1024)));
}
bool SizeExpression::eval(FileEntry *file)
bool SizeExpression::eval(const ExpFileEntry& file)
{
return evalRel(file->size);
return evalRel(file.file_size());
}
bool PopExpression::eval(FileEntry *file)
bool PopExpression::eval(const ExpFileEntry& file)
{
return evalRel(file->pop);
return evalRel(file.file_popularity());
}
/******************************************************************************************
@ -68,98 +71,93 @@ Code for evaluating string expressions
******************************************************************************************/
bool NameExpression::eval(FileEntry *file)
bool NameExpression::eval(const ExpFileEntry& file)
{
return evalStr(file->name);
return evalStr(file.file_name());
}
bool PathExpression::eval(FileEntry *file){
std::string path;
/*Construct the path of this file*/
DirEntry * curr = file->parent;
while ( curr != NULL ){
path = curr->name+"/"+ path;
curr = curr->parent;
}
return evalStr(path);
bool PathExpression::eval(const ExpFileEntry& file)
{
return evalStr(file.file_parent_path());
}
bool ExtExpression::eval(FileEntry *file){
std::string ext;
/*Get the part of the string after the last instance of . in the filename */
size_t index = file->name.find_last_of('.');
if (index != std::string::npos) {
ext = file->name.substr(index+1);
if (ext != "" ){
return evalStr(ext);
}
}
return false;
bool ExtExpression::eval(const ExpFileEntry& file)
{
std::string ext;
/*Get the part of the string after the last instance of . in the filename */
size_t index = file.file_name().find_last_of('.');
if (index != std::string::npos) {
ext = file.file_name().substr(index+1);
if (ext != "" ){
return evalStr(ext);
}
}
return false;
}
bool HashExpression::eval(FileEntry *file){
return evalStr(file->hash.toStdString());
bool HashExpression::eval(const ExpFileEntry& file){
return evalStr(file.file_hash().toStdString());
}
/*Check whether two strings are 'equal' to each other*/
static bool StrEquals(const std::string & str1, const std::string & str2,
bool IgnoreCase ){
if ( str1.size() != str2.size() ){
return false;
} else if (IgnoreCase) {
std::equal( str1.begin(), str1.end(),
str2.begin(), CompareCharIC() );
}
return std::equal( str1.begin(), str1.end(),
str2.begin());
bool IgnoreCase ){
if ( str1.size() != str2.size() ){
return false;
} else if (IgnoreCase) {
std::equal( str1.begin(), str1.end(),
str2.begin(), CompareCharIC() );
}
return std::equal( str1.begin(), str1.end(),
str2.begin());
}
/*Check whether one string contains the other*/
static bool StrContains( const std::string & str1, const std::string & str2,
bool IgnoreCase){
bool IgnoreCase){
std::string::const_iterator iter ;
if (IgnoreCase) {
iter = std::search( str1.begin(), str1.end(),
str2.begin(), str2.end(), CompareCharIC() );
} else {
iter = std::search( str1.begin(), str1.end(),
str2.begin(), str2.end());
}
return ( iter != str1.end() );
std::string::const_iterator iter ;
if (IgnoreCase) {
iter = std::search( str1.begin(), str1.end(),
str2.begin(), str2.end(), CompareCharIC() );
} else {
iter = std::search( str1.begin(), str1.end(),
str2.begin(), str2.end());
}
return ( iter != str1.end() );
}
bool StringExpression :: evalStr ( const std::string &str ){
std::list<std::string>::iterator iter;
switch (Op) {
case ContainsAllStrings:
for ( iter = terms.begin(); iter != terms.end(); ++iter ) {
if ( StrContains (str, *iter, IgnoreCase) == false ){
return false;
}
}
return true;
break;
case ContainsAnyStrings:
for ( iter = terms.begin(); iter != terms.end(); ++iter ) {
if ( StrContains (str,*iter, IgnoreCase) == true ) {
return true;
}
}
break;
case EqualsString:
for ( iter = terms.begin(); iter != terms.end(); ++iter ) {
if ( StrEquals (str,*iter, IgnoreCase) == true ) {
return true;
}
}
break;
default:
return false;
}
return false;
std::list<std::string>::iterator iter;
switch (Op) {
case ContainsAllStrings:
for ( iter = terms.begin(); iter != terms.end(); ++iter ) {
if ( StrContains (str, *iter, IgnoreCase) == false ){
return false;
}
}
return true;
break;
case ContainsAnyStrings:
for ( iter = terms.begin(); iter != terms.end(); ++iter ) {
if ( StrContains (str,*iter, IgnoreCase) == true ) {
return true;
}
}
break;
case EqualsString:
for ( iter = terms.begin(); iter != terms.end(); ++iter ) {
if ( StrEquals (str,*iter, IgnoreCase) == true ) {
return true;
}
}
break;
default:
return false;
}
return false;
}
/*************************************************************************
@ -168,122 +166,123 @@ bool StringExpression :: evalStr ( const std::string &str ){
void CompoundExpression::linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_COMP) ;
e._ints.push_back(Op) ;
e._tokens.push_back(LinearizedExpression::EXPR_COMP) ;
e._ints.push_back(Op) ;
Lexp->linearize(e) ;
Rexp->linearize(e) ;
Lexp->linearize(e) ;
Rexp->linearize(e) ;
}
void StringExpression::linearize(LinearizedExpression& e) const
{
e._ints.push_back(Op) ;
e._ints.push_back(IgnoreCase) ;
e._ints.push_back(terms.size()) ;
e._ints.push_back(Op) ;
e._ints.push_back(IgnoreCase) ;
e._ints.push_back(terms.size()) ;
for(std::list<std::string>::const_iterator it(terms.begin());it!=terms.end();++it)
e._strings.push_back(*it) ;
for(std::list<std::string>::const_iterator it(terms.begin());it!=terms.end();++it)
e._strings.push_back(*it) ;
}
Expression *LinearizedExpression::toExpr(const LinearizedExpression& e)
{
int i=0,j=0,k=0 ;
return toExpr(e,i,j,k) ;
int i=0,j=0,k=0 ;
return toExpr(e,i,j,k) ;
}
void LinearizedExpression::readStringExpr(const LinearizedExpression& e,int& n_ints,int& n_strings,std::list<std::string>& strings,bool& b,StringOperator& op)
{
op = static_cast<StringOperator>(e._ints[n_ints++]) ;
b = e._ints[n_ints++] ;
int n = e._ints[n_ints++] ;
op = static_cast<StringOperator>(e._ints[n_ints++]) ;
b = e._ints[n_ints++] ;
int n = e._ints[n_ints++] ;
strings.clear() ;
for(int i=0;i<n;++i)
strings.push_back(e._strings[n_strings++]) ;
strings.clear() ;
for(int i=0;i<n;++i)
strings.push_back(e._strings[n_strings++]) ;
}
Expression *LinearizedExpression::toExpr(const LinearizedExpression& e,int& n_tok,int& n_ints,int& n_strings)
{
LinearizedExpression::token tok = static_cast<LinearizedExpression::token>(e._tokens[n_tok++]) ;
LinearizedExpression::token tok = static_cast<LinearizedExpression::token>(e._tokens[n_tok++]) ;
switch(tok)
{
case EXPR_DATE: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
switch(tok)
{
case EXPR_DATE: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
return new DateExpression(op,lv,hv) ;
}
return new DateExpression(op,lv,hv) ;
}
case EXPR_POP: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
case EXPR_POP: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
return new PopExpression(op,lv,hv) ;
}
case EXPR_SIZE: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
return new PopExpression(op,lv,hv) ;
}
case EXPR_SIZE: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
return new SizeExpression(op,lv,hv) ;
}
case EXPR_HASH: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
return new SizeExpression(op,lv,hv) ;
}
case EXPR_HASH: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
return new HashExpression(op,strings) ;
}
case EXPR_NAME: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
return new HashExpression(op,strings) ;
}
case EXPR_NAME: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
return new NameExpression(op,strings,b) ;
}
case EXPR_PATH: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
return new NameExpression(op,strings,b) ;
}
case EXPR_PATH: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
return new ExtExpression(op,strings,b) ;
}
case EXPR_EXT: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
return new ExtExpression(op,strings,b) ;
}
case EXPR_EXT: {
std::list<std::string> strings ;
StringOperator op ;
bool b ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
readStringExpr(e,n_ints,n_strings,strings,b,op) ;
return new ExtExpression(op,strings,b) ;
}
case EXPR_COMP: {
LogicalOperator op = static_cast<LogicalOperator>(e._ints[n_ints++]) ;
return new ExtExpression(op,strings,b) ;
}
case EXPR_COMP: {
LogicalOperator op = static_cast<LogicalOperator>(e._ints[n_ints++]) ;
Expression *e1 = toExpr(e,n_tok,n_ints,n_strings) ;
Expression *e2 = toExpr(e,n_tok,n_ints,n_strings) ;
Expression *e1 = toExpr(e,n_tok,n_ints,n_strings) ;
Expression *e2 = toExpr(e,n_tok,n_ints,n_strings) ;
return new CompoundExpression(op,e1,e2) ;
}
case EXPR_SIZE_MB: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
return new CompoundExpression(op,e1,e2) ;
}
case EXPR_SIZE_MB: {
RelOperator op = static_cast<RelOperator>(e._ints[n_ints++]) ;
int lv = e._ints[n_ints++] ;
int hv = e._ints[n_ints++] ;
return new SizeExpressionMB(op,lv,hv) ;
}
default:
std::cerr << "No expression match the current value " << tok << std::endl ;
return NULL ;
}
return new SizeExpressionMB(op,lv,hv) ;
}
default:
std::cerr << "No expression match the current value " << tok << std::endl ;
return NULL ;
}
}
}

4
libretroshare/src/ft/ftserver.cc
View file

@ -569,11 +569,11 @@ int ftServer::SearchKeywords(std::list<std::string> keywords, std::list<DirDetai
return mFileDatabase->SearchKeywords(keywords, results,flags,peer_id);
}
int ftServer::SearchBoolExp(Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags)
int ftServer::SearchBoolExp(RsRegularExpression::Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags)
{
return mFileDatabase->SearchBoolExp(exp, results,flags,RsPeerId());
}
int ftServer::SearchBoolExp(Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id)
int ftServer::SearchBoolExp(RsRegularExpression::Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id)
{
return mFileDatabase->SearchBoolExp(exp,results,flags,peer_id) ;
}

4
libretroshare/src/ft/ftserver.h
View file

@ -184,8 +184,8 @@ public:
virtual int SearchKeywords(std::list<std::string> keywords, std::list<DirDetails> &results,FileSearchFlags flags);
virtual int SearchKeywords(std::list<std::string> keywords, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id);
virtual int SearchBoolExp(Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags);
virtual int SearchBoolExp(Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id);
virtual int SearchBoolExp(RsRegularExpression::Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags);
virtual int SearchBoolExp(RsRegularExpression::Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id);
/***
* Utility Functions

1
libretroshare/src/libretroshare.pro
View file

@ -59,6 +59,7 @@ file_lists {
file_sharing/rsfilelistitems.cc
}
dsdv {
DEFINES *= SERVICES_DSDV
HEADERS += services/p3dsdv.h \

382
libretroshare/src/retroshare/rsexpr.h
View file

@ -1,6 +1,3 @@
#ifndef RS_EXPRESSIONS_H
#define RS_EXPRESSIONS_H
/*
* rs-core/src/rsiface: rsexpr.h
*
@ -26,38 +23,41 @@
*
*/
#pragma once
#include <string>
#include <list>
#include <stdint.h>
#include "retroshare/rstypes.h"
/******************************************************************************************
Enumerations defining the Operators usable in the Boolean search expressions
******************************************************************************************/
namespace RsRegularExpression
{
enum LogicalOperator{
AndOp=0, /* exp AND exp */
OrOp=1, /* exp OR exp */
XorOp=2 /* exp XOR exp */
AndOp=0, /* exp AND exp */
OrOp=1, /* exp OR exp */
XorOp=2 /* exp XOR exp */
};
/*Operators for String Queries*/
/* Operators for String Queries */
enum StringOperator{
ContainsAnyStrings = 0, /* e.g. name contains any of 'conference' 'meeting' 'presentation' */
ContainsAllStrings = 1, /* same as above except that it contains ALL of the strings */
EqualsString = 2 /* exactly equal*/
ContainsAnyStrings = 0, /* e.g. name contains any of 'conference' 'meeting' 'presentation' */
ContainsAllStrings = 1, /* same as above except that it contains ALL of the strings */
EqualsString = 2 /* exactly equal*/
};
/*Relational operators ( >, <, >=, <=, == and InRange )*/
/* Comparison operators ( >, <, >=, <=, == and InRange ) */
enum RelOperator{
Equals = 0,
GreaterEquals = 1,
Greater = 2,
SmallerEquals = 3,
Smaller = 4,
InRange = 5 /* lower limit <= value <= upper limit*/
Equals = 0,
GreaterEquals = 1,
Greater = 2,
SmallerEquals = 3,
Smaller = 4,
InRange = 5 /* lower limit <= value <= upper limit*/
};
/********************************************************************************************
@ -69,26 +69,26 @@ class Expression ;
class LinearizedExpression
{
public:
std::vector<uint8_t> _tokens ;
std::vector<uint32_t> _ints ;
std::vector<std::string> _strings ;
public:
std::vector<uint8_t> _tokens ;
std::vector<uint32_t> _ints ;
std::vector<std::string> _strings ;
typedef enum { EXPR_DATE= 0,
EXPR_POP = 1,
EXPR_SIZE= 2,
EXPR_HASH= 3,
EXPR_NAME= 4,
EXPR_PATH= 5,
EXPR_EXT = 6,
EXPR_COMP= 7,
EXPR_SIZE_MB=8 } token ;
typedef enum { EXPR_DATE = 0,
EXPR_POP = 1,
EXPR_SIZE = 2,
EXPR_HASH = 3,
EXPR_NAME = 4,
EXPR_PATH = 5,
EXPR_EXT = 6,
EXPR_COMP = 7,
EXPR_SIZE_MB = 8 } token ;
static Expression *toExpr(const LinearizedExpression& e) ;
static Expression *toExpr(const LinearizedExpression& e) ;
private:
static Expression *toExpr(const LinearizedExpression& e,int&,int&,int&) ;
static void readStringExpr(const LinearizedExpression& e,int& n_ints,int& n_strings,std::list<std::string>& strings,bool& b,StringOperator& op) ;
private:
static Expression *toExpr(const LinearizedExpression& e,int&,int&,int&) ;
static void readStringExpr(const LinearizedExpression& e,int& n_ints,int& n_strings,std::list<std::string>& strings,bool& b,StringOperator& op) ;
};
@ -96,110 +96,122 @@ class LinearizedExpression
Boolean Search Expression
classes:
Expression: The base class of all expression typest
CompoundExpression: The expression which uses a logical operator to combine
the results of two expressions
StringExpression: An expression which uses some sort of string comparison.
RelExpression: A Relational Expression where > < >= <= == make sense.
e.g. size date etc
Expression: The base class of all expression typest
CompoundExpression: The expression which uses a logical operator to combine
the results of two expressions
StringExpression: An expression which uses some sort of string comparison.
RelExpression: A Relational Expression where > < >= <= == make sense.
e.g. size date etc
******************************************************************************************/
class FileEntry;
/*!
* \brief The ExpFileEntry class
* This is the base class the regular expressions can operate on. Derive it to fit your own needs!
*/
class ExpFileEntry
{
public:
virtual const std::string& file_name() const =0;
virtual uint64_t file_size() const =0;
virtual time_t file_modtime() const =0;
virtual time_t file_popularity() const =0;
virtual const std::string file_parent_path() const =0;
virtual const RsFileHash& file_hash() const =0;
};
class Expression
{
public:
virtual bool eval (FileEntry *file) = 0;
virtual ~Expression() {};
public:
virtual bool eval (const ExpFileEntry& file) = 0;
virtual ~Expression() {};
virtual void linearize(LinearizedExpression& e) const = 0 ;
virtual void linearize(LinearizedExpression& e) const = 0 ;
};
class CompoundExpression : public Expression
{
public:
CompoundExpression( enum LogicalOperator op, Expression * exp1, Expression *exp2)
: Lexp(exp1), Rexp(exp2), Op(op){ }
public:
CompoundExpression( enum LogicalOperator op, Expression * exp1, Expression *exp2)
: Lexp(exp1), Rexp(exp2), Op(op){ }
bool eval (FileEntry *file) {
if (Lexp == NULL or Rexp == NULL) {
return false;
}
switch (Op){
case AndOp:
return Lexp->eval(file) && Rexp->eval(file);
case OrOp:
return Lexp->eval(file) || Rexp->eval(file);
case XorOp:
return Lexp->eval(file) ^ Rexp->eval(file);
default:
return false;
}
}
virtual ~CompoundExpression(){
delete Lexp;
delete Rexp;
}
bool eval (const ExpFileEntry& file) {
if (Lexp == NULL or Rexp == NULL) {
return false;
}
switch (Op){
case AndOp:
return Lexp->eval(file) && Rexp->eval(file);
case OrOp:
return Lexp->eval(file) || Rexp->eval(file);
case XorOp:
return Lexp->eval(file) ^ Rexp->eval(file);
default:
return false;
}
}
virtual ~CompoundExpression(){
delete Lexp;
delete Rexp;
}
virtual void linearize(LinearizedExpression& e) const ;
private:
Expression *Lexp;
Expression *Rexp;
enum LogicalOperator Op;
virtual void linearize(LinearizedExpression& e) const ;
private:
Expression *Lexp;
Expression *Rexp;
enum LogicalOperator Op;
};
class StringExpression: public Expression
{
public:
StringExpression(enum StringOperator op, std::list<std::string> &t, bool ic): Op(op),terms(t), IgnoreCase(ic){}
public:
StringExpression(enum StringOperator op, std::list<std::string> &t, bool ic): Op(op),terms(t), IgnoreCase(ic){}
virtual void linearize(LinearizedExpression& e) const ;
protected:
bool evalStr(const std::string &str);
virtual void linearize(LinearizedExpression& e) const ;
protected:
bool evalStr(const std::string &str);
enum StringOperator Op;
std::list<std::string> terms;
bool IgnoreCase;
enum StringOperator Op;
std::list<std::string> terms;
bool IgnoreCase;
};
template <class T>
class RelExpression: public Expression
{
public:
RelExpression(enum RelOperator op, T lv, T hv): Op(op), LowerValue(lv), HigherValue(hv) {}
public:
RelExpression(enum RelOperator op, T lv, T hv): Op(op), LowerValue(lv), HigherValue(hv) {}
virtual void linearize(LinearizedExpression& e) const ;
protected:
bool evalRel(T val);
virtual void linearize(LinearizedExpression& e) const ;
protected:
bool evalRel(T val);
enum RelOperator Op;
T LowerValue;
T HigherValue;
enum RelOperator Op;
T LowerValue;
T HigherValue;
};
template<> void RelExpression<int>::linearize(LinearizedExpression& e) const ;
template <class T>
bool RelExpression<T>::evalRel(T val) {
switch (Op) {
case Equals:
return LowerValue == val;
case GreaterEquals:
return LowerValue >= val;
case Greater:
return LowerValue > val;
case SmallerEquals:
return LowerValue <= val;
case Smaller:
return LowerValue < val;
case InRange:
return (LowerValue <= val) && (val <= HigherValue);
default:
return false;
}
switch (Op) {
case Equals:
return LowerValue == val;
case GreaterEquals:
return LowerValue >= val;
case Greater:
return LowerValue > val;
case SmallerEquals:
return LowerValue <= val;
case Smaller:
return LowerValue < val;
case InRange:
return (LowerValue <= val) && (val <= HigherValue);
default:
return false;
}
}
@ -212,12 +224,12 @@ Binary Predicate for Case Insensitive search
*Factor locales in the comparison
*/
struct CompareCharIC :
public std::binary_function< char , char , bool> {
public std::binary_function< char , char , bool> {
bool operator () ( char ch1 , char ch2 ) const {
return tolower( static_cast < unsigned char > (ch1) )
== tolower( static_cast < unsigned char > (ch2) );
}
bool operator () ( char ch1 , char ch2 ) const {
return tolower( static_cast < unsigned char > (ch1) )
== tolower( static_cast < unsigned char > (ch2) );
}
};
@ -228,55 +240,55 @@ Some implementations of StringExpressions.
class NameExpression: public StringExpression
{
public:
NameExpression(enum StringOperator op, std::list<std::string> &t, bool ic):
StringExpression(op,t,ic) {}
bool eval(FileEntry *file);
public:
NameExpression(enum StringOperator op, std::list<std::string> &t, bool ic):
StringExpression(op,t,ic) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_NAME) ;
StringExpression::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_NAME) ;
StringExpression::linearize(e) ;
}
};
class PathExpression: public StringExpression {
public:
PathExpression(enum StringOperator op, std::list<std::string> &t, bool ic):
StringExpression(op,t,ic) {}
bool eval(FileEntry *file);
PathExpression(enum StringOperator op, std::list<std::string> &t, bool ic):
StringExpression(op,t,ic) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_PATH) ;
StringExpression::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_PATH) ;
StringExpression::linearize(e) ;
}
};
class ExtExpression: public StringExpression {
public:
ExtExpression(enum StringOperator op, std::list<std::string> &t, bool ic):
StringExpression(op,t,ic) {}
bool eval(FileEntry *file);
ExtExpression(enum StringOperator op, std::list<std::string> &t, bool ic):
StringExpression(op,t,ic) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_EXT) ;
StringExpression::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_EXT) ;
StringExpression::linearize(e) ;
}
};
class HashExpression: public StringExpression {
public:
HashExpression(enum StringOperator op, std::list<std::string> &t):
StringExpression(op,t, true) {}
bool eval(FileEntry *file);
HashExpression(enum StringOperator op, std::list<std::string> &t):
StringExpression(op,t, true) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_HASH) ;
StringExpression::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_HASH) ;
StringExpression::linearize(e) ;
}
};
/******************************************************************************************
@ -286,62 +298,62 @@ Some implementations of Relational Expressions.
class DateExpression: public RelExpression<int>
{
public:
DateExpression(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
DateExpression(enum RelOperator op, int lv, int hv):
RelExpression<int>(op,lv,hv) {}
bool eval(FileEntry *file);
public:
DateExpression(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
DateExpression(enum RelOperator op, int lv, int hv):
RelExpression<int>(op,lv,hv) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_DATE) ;
RelExpression<int>::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_DATE) ;
RelExpression<int>::linearize(e) ;
}
};
class SizeExpression: public RelExpression<int>
{
public:
SizeExpression(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
SizeExpression(enum RelOperator op, int lv, int hv):
RelExpression<int>(op,lv,hv) {}
bool eval(FileEntry *file);
public:
SizeExpression(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
SizeExpression(enum RelOperator op, int lv, int hv):
RelExpression<int>(op,lv,hv) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_SIZE) ;
RelExpression<int>::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_SIZE) ;
RelExpression<int>::linearize(e) ;
}
};
class SizeExpressionMB: public RelExpression<int>
{
public:
SizeExpressionMB(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
SizeExpressionMB(enum RelOperator op, int lv, int hv):
RelExpression<int>(op,lv,hv) {}
bool eval(FileEntry *file);
public:
SizeExpressionMB(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
SizeExpressionMB(enum RelOperator op, int lv, int hv):
RelExpression<int>(op,lv,hv) {}
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_SIZE_MB) ;
RelExpression<int>::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_SIZE_MB) ;
RelExpression<int>::linearize(e) ;
}
};
class PopExpression: public RelExpression<int>
{
public:
PopExpression(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
PopExpression(enum RelOperator op, int lv, int hv): RelExpression<int>(op,lv,hv) {}
PopExpression(const LinearizedExpression& e) ;
bool eval(FileEntry *file);
public:
PopExpression(enum RelOperator op, int v): RelExpression<int>(op,v,v){}
PopExpression(enum RelOperator op, int lv, int hv): RelExpression<int>(op,lv,hv) {}
PopExpression(const LinearizedExpression& e) ;
bool eval(const ExpFileEntry& file);
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_POP) ;
RelExpression<int>::linearize(e) ;
}
virtual void linearize(LinearizedExpression& e) const
{
e._tokens.push_back(LinearizedExpression::EXPR_POP) ;
RelExpression<int>::linearize(e) ;
}
};
}
#endif /* RS_EXPRESSIONS_H */

6
libretroshare/src/retroshare/rsfiles.h
View file

@ -36,7 +36,7 @@
class RsFiles;
extern RsFiles *rsFiles;
class Expression;
namespace RsRegularExpression { class Expression; }
class CacheStrapper ;
class CacheTransfer;
@ -190,8 +190,8 @@ class RsFiles
virtual int SearchKeywords(std::list<std::string> keywords, std::list<DirDetails> &results,FileSearchFlags flags) = 0;
virtual int SearchKeywords(std::list<std::string> keywords, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id) = 0;
virtual int SearchBoolExp(Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags) = 0;
virtual int SearchBoolExp(Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id) = 0;
virtual int SearchBoolExp(RsRegularExpression::Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags) = 0;
virtual int SearchBoolExp(RsRegularExpression::Expression * exp, std::list<DirDetails> &results,FileSearchFlags flags,const RsPeerId& peer_id) = 0;
/***
* Utility Functions.

4
libretroshare/src/retroshare/rsturtle.h
View file

@ -35,7 +35,7 @@
#include "retroshare/rstypes.h"
class LinearizedExpression ;
namespace RsRegularExpression { class LinearizedExpression ; }
class RsTurtleClientService ;
class RsTurtle;
@ -102,7 +102,7 @@ class RsTurtle
// as they come back.
//
virtual TurtleRequestId turtleSearch(const std::string& match_string) = 0 ;
virtual TurtleRequestId turtleSearch(const LinearizedExpression& expr) = 0 ;
virtual TurtleRequestId turtleSearch(const RsRegularExpression::LinearizedExpression& expr) = 0 ;
// Initiates tunnel handling for the given file hash. tunnels. Launches
// an exception if an error occurs during the initialization process. The

4
libretroshare/src/turtle/p3turtle.cc
View file

@ -1763,7 +1763,7 @@ void RsTurtleRegExpSearchRequestItem::performLocalSearch(std::list<TurtleFileInf
std::list<DirDetails> initialResults;
// to do: split search string into words.
Expression *exp = LinearizedExpression::toExpr(expr) ;
RsRegularExpression::Expression *exp = RsRegularExpression::LinearizedExpression::toExpr(expr) ;
if(exp == NULL)
return ;
@ -1820,7 +1820,7 @@ TurtleRequestId p3turtle::turtleSearch(const std::string& string_to_match)
return id ;
}
TurtleRequestId p3turtle::turtleSearch(const LinearizedExpression& expr)
TurtleRequestId p3turtle::turtleSearch(const RsRegularExpression::LinearizedExpression& expr)
{
// generate a new search id.

2
libretroshare/src/turtle/p3turtle.h
View file

@ -239,7 +239,7 @@ class p3turtle: public p3Service, public RsTurtle, public p3Config
// remove the specific file search packets from the turtle router.
//
virtual TurtleSearchRequestId turtleSearch(const std::string& string_to_match) ;
virtual TurtleSearchRequestId turtleSearch(const LinearizedExpression& expr) ;
virtual TurtleSearchRequestId turtleSearch(const RsRegularExpression::LinearizedExpression& expr) ;
// Initiates tunnel handling for the given file hash. tunnels. Launches
// an exception if an error occurs during the initialization process. The

2
libretroshare/src/turtle/rsturtleitem.h
View file

@ -102,7 +102,7 @@ class RsTurtleRegExpSearchRequestItem: public RsTurtleSearchRequestItem
RsTurtleRegExpSearchRequestItem() : RsTurtleSearchRequestItem(RS_TURTLE_SUBTYPE_REGEXP_SEARCH_REQUEST) {}
RsTurtleRegExpSearchRequestItem(void *data,uint32_t size) ;
LinearizedExpression expr ; // Reg Exp in linearised mode
RsRegularExpression::LinearizedExpression expr ; // Reg Exp in linearised mode
virtual RsTurtleSearchRequestItem *clone() const { return new RsTurtleRegExpSearchRequestItem(*this) ; }
virtual void performLocalSearch(std::list<TurtleFileInfo>&) const ;