CMake/Source/cmGlob.cxx

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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmGlob.h"
#include <cmsys/Directory.hxx>
#include <cmsys/RegularExpression.hxx>
#include <cmsys/SystemTools.hxx>
#include <ctype.h>
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#if defined( _WIN32 ) || defined( APPLE ) || defined( __CYGWIN__ )
// On Windows and apple, no difference between lower and upper case
#define CM_GLOB_CASE_INDEPENDENT
#endif
#if defined( _WIN32 ) || defined( __CYGWIN__ )
// Handle network paths
#define CM_GLOB_SUPPORT_NETWORK_PATHS
#endif
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class cmGlobInternal
{
public:
std::vector<std::string> Files;
std::vector<cmsys::RegularExpression> Expressions;
std::vector<std::string> TextExpressions;
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};
cmGlob::cmGlob()
{
m_Internals = new cmGlobInternal;
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m_Recurse = false;
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}
cmGlob::~cmGlob()
{
delete m_Internals;
}
void cmGlob::Escape(int ch, char* buffer)
{
if (! (
'a' <= ch && ch <= 'z' ||
'A' <= ch && ch <= 'Z' ||
'0' <= ch && ch <= '9') )
{
sprintf(buffer, "\\%c", ch);
}
else
{
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#if defined( CM_GLOB_CASE_INDEPENDENT )
// On Windows and apple, no difference between lower and upper case
sprintf(buffer, "%c", tolower(ch));
#else
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sprintf(buffer, "%c", ch);
#endif
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}
}
std::vector<std::string>& cmGlob::GetFiles()
{
return m_Internals->Files;
}
std::string cmGlob::ConvertExpression(const std::string& expr)
{
std::string::size_type i = 0;
std::string::size_type n = expr.size();
std::string res = "^";
std::string stuff = "";
while ( i < n )
{
int c = expr[i];
i = i+1;
if ( c == '*' )
{
res = res + ".*";
}
else if ( c == '?' )
{
res = res + ".";
}
else if ( c == '[' )
{
std::string::size_type j = i;
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if ( j < n && ( expr[j] == '!' || expr[j] == '^' ) )
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{
j = j+1;
}
if ( j < n && expr[j] == ']' )
{
j = j+1;
}
while ( j < n && expr[j] != ']' )
{
j = j+1;
}
if ( j >= n )
{
res = res + "\\[";
}
else
{
stuff = "";
std::string::size_type cc;
for ( cc = i; cc < j; cc ++ )
{
if ( expr[cc] == '\\' )
{
stuff += "\\\\";
}
else
{
stuff += expr[cc];
}
}
i = j+1;
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if ( stuff[0] == '!' || stuff[0] == '^' )
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{
stuff = '^' + stuff.substr(1);
}
else if ( stuff[0] == '^' )
{
stuff = '\\' + stuff;
}
res = res + "[" + stuff + "]";
}
}
else
{
char buffer[100];
buffer[0] = 0;
this->Escape(c, buffer);
res = res + buffer;
}
}
return res + "$";
}
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void cmGlob::RecurseDirectory(std::string::size_type start,
const std::string& dir, bool dir_only)
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{
cmsys::Directory d;
if ( !d.Load(dir.c_str()) )
{
return;
}
unsigned long cc;
std::string fullname;
std::string realname;
std::string fname;
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for ( cc = 0; cc < d.GetNumberOfFiles(); cc ++ )
{
fname = d.GetFile(cc);
if ( strcmp(fname.c_str(), ".") == 0 ||
strcmp(fname.c_str(), "..") == 0 )
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{
continue;
}
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if ( start == 0 )
{
realname = dir + fname;
}
else
{
realname = dir + "/" + fname;
}
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#if defined( CM_GLOB_CASE_INDEPENDENT )
// On Windows and apple, no difference between lower and upper case
fname = cmsys::SystemTools::LowerCase(fname);
#endif
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if ( start == 0 )
{
fullname = dir + fname;
}
else
{
fullname = dir + "/" + fname;
}
if ( !dir_only || !cmsys::SystemTools::FileIsDirectory(realname.c_str()) )
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{
if ( m_Internals->Expressions[m_Internals->Expressions.size()-1].find(fname.c_str()) )
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{
m_Internals->Files.push_back(realname);
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}
}
if ( cmsys::SystemTools::FileIsDirectory(realname.c_str()) )
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{
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this->RecurseDirectory(start+1, realname, dir_only);
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}
}
}
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void cmGlob::ProcessDirectory(std::string::size_type start,
const std::string& dir, bool dir_only)
{
//std::cout << "ProcessDirectory: " << dir << std::endl;
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bool last = ( start == m_Internals->Expressions.size()-1 );
if ( last && m_Recurse )
{
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this->RecurseDirectory(start, dir, dir_only);
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return;
}
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cmsys::Directory d;
if ( !d.Load(dir.c_str()) )
{
return;
}
unsigned long cc;
std::string fullname;
std::string realname;
std::string fname;
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for ( cc = 0; cc < d.GetNumberOfFiles(); cc ++ )
{
fname = d.GetFile(cc);
if ( strcmp(fname.c_str(), ".") == 0 ||
strcmp(fname.c_str(), "..") == 0 )
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{
continue;
}
if ( start == 0 )
{
realname = dir + fname;
}
else
{
realname = dir + "/" + fname;
}
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#if defined( CM_GLOB_CASE_INDEPENDENT )
// On Windows and apple, no difference between lower and upper case
fname = cmsys::SystemTools::LowerCase(fname);
#endif
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if ( start == 0 )
{
fullname = dir + fname;
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}
else
{
fullname = dir + "/" + fname;
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}
//std::cout << "Look at file: " << fname << std::endl;
//std::cout << "Match: " << m_Internals->TextExpressions[start].c_str() << std::endl;
//std::cout << "Full name: " << fullname << std::endl;
if ( (!dir_only || !last) && !cmsys::SystemTools::FileIsDirectory(realname.c_str()) )
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{
continue;
}
if ( m_Internals->Expressions[start].find(fname.c_str()) )
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{
if ( last )
{
m_Internals->Files.push_back(realname);
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}
else
{
this->ProcessDirectory(start+1, realname + "/", dir_only);
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}
}
}
}
bool cmGlob::FindFiles(const std::string& inexpr)
{
std::string cexpr;
std::string::size_type cc;
std::string expr = inexpr;
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m_Internals->Expressions.clear();
m_Internals->Files.clear();
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if ( !cmsys::SystemTools::FileIsFullPath(expr.c_str()) )
{
expr = cmsys::SystemTools::GetCurrentWorkingDirectory();
expr += "/" + inexpr;
}
std::string fexpr = expr;
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int skip = 0;
int last_slash = 0;
for ( cc = 0; cc < expr.size(); cc ++ )
{
if ( cc > 0 && expr[cc] == '/' && expr[cc-1] != '\\' )
{
last_slash = cc;
}
if ( cc > 0 &&
(expr[cc] == '[' || expr[cc] == '?' || expr[cc] == '*') &&
expr[cc-1] != '\\' )
{
break;
}
}
if ( last_slash > 0 )
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{
//std::cout << "I can skip: " << fexpr.substr(0, last_slash) << std::endl;
skip = last_slash;
}
if ( skip == 0 )
{
#if defined( CM_GLOB_SUPPORT_NETWORK_PATHS )
// Handle network paths
if ( expr[0] == '/' && expr[1] == '/' )
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{
int cnt = 0;
for ( cc = 2; cc < expr.size(); cc ++ )
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{
if ( expr[cc] == '/' )
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{
cnt ++;
if ( cnt == 2 )
{
break;
}
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}
}
skip = cc + 1;
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}
else
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#endif
// Handle drive letters on Windows
if ( expr[1] == ':' && expr[0] != '/' )
{
skip = 2;
}
}
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if ( skip > 0 )
{
expr = expr.substr(skip);
}
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cexpr = "";
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for ( cc = 0; cc < expr.size(); cc ++ )
{
int ch = expr[cc];
if ( ch == '/' )
{
if ( cexpr.size() > 0 )
{
this->AddExpression(cexpr.c_str());
}
cexpr = "";
}
else
{
cexpr.append(1, (char)ch);
}
}
if ( cexpr.size() > 0 )
{
this->AddExpression(cexpr.c_str());
}
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// Handle network paths
if ( skip > 0 )
{
this->ProcessDirectory(0, fexpr.substr(0, skip) + "/",
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true);
}
else
{
this->ProcessDirectory(0, "/", true);
}
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return true;
}
void cmGlob::AddExpression(const char* expr)
{
m_Internals->Expressions.push_back(
cmsys::RegularExpression(
this->ConvertExpression(expr).c_str()));
m_Internals->TextExpressions.push_back(this->ConvertExpression(expr));
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}