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ENH: store the matches for paren-delimited subexpression in

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CMAKE_MATCH_[0..9] variables, so to get multiple subexpressions from one
string STRING(REGEX MATCH) has to be executed only once

Alex
This commit is contained in:
Alexander Neundorf 2007-08-21 11:30:09 -04:00
parent bf354fa308
commit c1b3484c2d
1 changed files with 28 additions and 0 deletions
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28
Source/cmStringCommand.cxx
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@ -248,6 +248,7 @@ bool cmStringCommand::RegexMatch(std::vector<std::string> const& args)
input += args[i]; input += args[i];
} }
this->ClearMatches();
// Compile the regular expression. // Compile the regular expression.
cmsys::RegularExpression re; cmsys::RegularExpression re;
if(!re.compile(regex.c_str())) if(!re.compile(regex.c_str()))
@ -262,6 +263,7 @@ bool cmStringCommand::RegexMatch(std::vector<std::string> const& args)
std::string output; std::string output;
if(re.find(input.c_str())) if(re.find(input.c_str()))
{ {
this->StoreMatches(re);
std::string::size_type l = re.start(); std::string::size_type l = re.start();
std::string::size_type r = re.end(); std::string::size_type r = re.end();
if(r-l == 0) if(r-l == 0)
@ -295,6 +297,7 @@ bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
input += args[i]; input += args[i];
} }
this->ClearMatches();
// Compile the regular expression. // Compile the regular expression.
cmsys::RegularExpression re; cmsys::RegularExpression re;
if(!re.compile(regex.c_str())) if(!re.compile(regex.c_str()))
@ -311,6 +314,7 @@ bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
const char* p = input.c_str(); const char* p = input.c_str();
while(re.find(p)) while(re.find(p))
{ {
this->StoreMatches(re);
std::string::size_type l = re.start(); std::string::size_type l = re.start();
std::string::size_type r = re.end(); std::string::size_type r = re.end();
if(r-l == 0) if(r-l == 0)
@ -397,6 +401,7 @@ bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
input += args[i]; input += args[i];
} }
this->ClearMatches();
// Compile the regular expression. // Compile the regular expression.
cmsys::RegularExpression re; cmsys::RegularExpression re;
if(!re.compile(regex.c_str())) if(!re.compile(regex.c_str()))
@ -413,6 +418,7 @@ bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
std::string::size_type base = 0; std::string::size_type base = 0;
while(re.find(input.c_str()+base)) while(re.find(input.c_str()+base))
{ {
this->StoreMatches(re);
std::string::size_type l2 = re.start(); std::string::size_type l2 = re.start();
std::string::size_type r = re.end(); std::string::size_type r = re.end();
@ -472,6 +478,28 @@ bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
return true; return true;
} }
//----------------------------------------------------------------------------
void cmStringCommand::ClearMatches()
{
for (unsigned int i=0; i<10; i++)
{
char name[128];
sprintf(name, "CMAKE_MATCH_%d", i);
this->Makefile->AddDefinition(name, "");
}
}
//----------------------------------------------------------------------------
void cmStringCommand::StoreMatches(cmsys::RegularExpression& re)
{
for (unsigned int i=0; i<10; i++)
{
char name[128];
sprintf(name, "CMAKE_MATCH_%d", i);
this->Makefile->AddDefinition(name, re.match(i).c_str());
}
}
//---------------------------------------------------------------------------- //----------------------------------------------------------------------------
bool cmStringCommand::HandleCompareCommand(std::vector<std::string> const& bool cmStringCommand::HandleCompareCommand(std::vector<std::string> const&
args) args)