ENH: Push glob to the kwsys

1 files changed, 428 insertions, 0 deletions

diff --git a/Source/kwsys/Glob.cxx b/Source/kwsys/Glob.cxx
new file mode 100644
index 0000000..def29d0
--- /dev/null
+++ b/Source/kwsys/Glob.cxx
@@ -0,0 +1,428 @@
+/*=========================================================================
+
+  Program:   KWSys - Kitware System Library
+  Module:    $RCSfile$
+
+  Copyright (c) Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.kitware.com/Copyright.htm 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 "kwsysPrivate.h"
+#include KWSYS_HEADER(Glob.hxx)
+
+#include KWSYS_HEADER(Configure.hxx)
+
+#include KWSYS_HEADER(RegularExpression.hxx)
+#include KWSYS_HEADER(SystemTools.hxx)
+#include KWSYS_HEADER(Directory.hxx)
+#include KWSYS_HEADER(stl/string)
+#include KWSYS_HEADER(stl/vector)
+
+// Work-around CMake dependency scanning limitation.  This must
+// duplicate the above list of headers.
+#if 0
+# include "Glob.hxx.in"
+# include "Configure.hxx.in"
+# include "RegularExpression.hxx.in"
+# include "SystemTools.hxx.in"
+# include "kwsys_stl.hxx.in"
+# include "kwsys_stl_string.hxx.in"
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+
+namespace KWSYS_NAMESPACE
+{
+#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
+
+//----------------------------------------------------------------------------
+class GlobInternals
+{
+public:
+  std::vector<std::string> Files;
+  std::vector<cmsys::RegularExpression> Expressions;
+  std::vector<std::string> TextExpressions;
+};
+
+//----------------------------------------------------------------------------
+Glob::Glob()
+{
+  m_Internals = new GlobInternals;
+  m_Recurse = false;
+}
+
+//----------------------------------------------------------------------------
+Glob::~Glob()
+{
+  delete m_Internals;
+}
+
+//----------------------------------------------------------------------------
+void Glob::Escape(int ch, char* buffer)
+{
+  if (! (
+      'a' <= ch && ch <= 'z' || 
+      'A' <= ch && ch <= 'Z' || 
+      '0' <= ch && ch <= '9') )
+    {
+    sprintf(buffer, "\\%c", ch);
+    }
+  else
+    {
+#if defined( CM_GLOB_CASE_INDEPENDENT )
+    // On Windows and apple, no difference between lower and upper case
+    sprintf(buffer, "%c", tolower(ch));
+#else
+    sprintf(buffer, "%c", ch);
+#endif
+    }
+}
+
+//----------------------------------------------------------------------------
+std::vector<std::string>& Glob::GetFiles()
+{
+  return m_Internals->Files;
+}
+
+//----------------------------------------------------------------------------
+std::string Glob::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;
+      if ( j < n && ( expr[j] == '!' || expr[j] == '^' ) )
+        {
+        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;
+        if ( stuff[0] == '!' || stuff[0] == '^' )
+          {
+          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 + "$";
+}
+
+//----------------------------------------------------------------------------
+void Glob::RecurseDirectory(std::string::size_type start,
+  const std::string& dir, bool dir_only)
+{
+  cmsys::Directory d;
+  if ( !d.Load(dir.c_str()) )
+    {
+    return;
+    }
+  unsigned long cc;
+  std::string fullname;
+  std::string realname;
+  std::string fname;
+  for ( cc = 0; cc < d.GetNumberOfFiles(); cc ++ )
+    {
+    fname = d.GetFile(cc);
+    if ( strcmp(fname.c_str(), ".") == 0 ||
+      strcmp(fname.c_str(), "..") == 0  )
+      {
+      continue;
+      }
+
+    if ( start == 0 )
+      {
+      realname = dir + fname;
+      }
+    else
+      {
+      realname = dir + "/" + fname;
+      }
+
+#if defined( CM_GLOB_CASE_INDEPENDENT )
+    // On Windows and apple, no difference between lower and upper case
+    fname = cmsys::SystemTools::LowerCase(fname);
+#endif
+
+    if ( start == 0 )
+      {
+      fullname = dir + fname;
+      }
+    else
+      {
+      fullname = dir + "/" + fname;
+      }
+
+    if ( !dir_only || !cmsys::SystemTools::FileIsDirectory(realname.c_str()) )
+      {
+      if ( m_Internals->Expressions[m_Internals->Expressions.size()-1].find(fname.c_str()) )
+        {
+        m_Internals->Files.push_back(realname);
+        }
+      }
+    if ( cmsys::SystemTools::FileIsDirectory(realname.c_str()) )
+      {
+      this->RecurseDirectory(start+1, realname, dir_only);
+      }
+    }
+}
+
+//----------------------------------------------------------------------------
+void Glob::ProcessDirectory(std::string::size_type start, 
+  const std::string& dir, bool dir_only)
+{
+  //std::cout << "ProcessDirectory: " << dir << std::endl;
+  bool last = ( start == m_Internals->Expressions.size()-1 );
+  if ( last && m_Recurse )
+    {
+    this->RecurseDirectory(start, dir, dir_only);
+    return;
+    }
+  cmsys::Directory d;
+  if ( !d.Load(dir.c_str()) )
+    {
+    return;
+    }
+  unsigned long cc;
+  std::string fullname;
+  std::string realname;
+  std::string fname;
+  for ( cc = 0; cc < d.GetNumberOfFiles(); cc ++ )
+    {
+    fname = d.GetFile(cc);
+    if ( strcmp(fname.c_str(), ".") == 0 ||
+      strcmp(fname.c_str(), "..") == 0  )
+      {
+      continue;
+      }
+
+    if ( start == 0 )
+      {
+      realname = dir + fname;
+      }
+    else
+      {
+      realname = dir + "/" + fname;
+      }
+
+#if defined( CM_GLOB_CASE_INDEPENDENT )
+    // On Windows and apple, no difference between lower and upper case
+    fname = cmsys::SystemTools::LowerCase(fname);
+#endif
+
+    if ( start == 0 )
+      {
+      fullname = dir + fname;
+      }
+    else
+      {
+      fullname = dir + "/" + fname;
+      }
+
+    //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()) )
+      {
+      continue;
+      }
+
+    if ( m_Internals->Expressions[start].find(fname.c_str()) )
+      {
+      if ( last )
+        {
+        m_Internals->Files.push_back(realname);
+        }
+      else
+        {
+        this->ProcessDirectory(start+1, realname + "/", dir_only);
+        }
+      }
+    }
+}
+
+//----------------------------------------------------------------------------
+bool Glob::FindFiles(const std::string& inexpr)
+{
+  std::string cexpr;
+  std::string::size_type cc;
+  std::string expr = inexpr;
+
+  m_Internals->Expressions.clear();
+  m_Internals->Files.clear();
+
+  if ( !cmsys::SystemTools::FileIsFullPath(expr.c_str()) )
+    {
+    expr = cmsys::SystemTools::GetCurrentWorkingDirectory();
+    expr += "/" + inexpr;
+    }
+  std::string fexpr = expr;
+
+  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 )
+    {
+    //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] == '/' )
+      {
+      int cnt = 0;
+      for ( cc = 2; cc < expr.size(); cc ++ )
+        {
+        if ( expr[cc] == '/' )
+          {
+          cnt ++;
+          if ( cnt == 2 )
+            {
+            break;
+            }
+          }
+        }
+      skip = cc + 1;
+      }
+    else
+#endif
+      // Handle drive letters on Windows
+      if ( expr[1] == ':' && expr[0] != '/' )
+        {
+        skip = 2;
+        }
+    }
+
+  if ( skip > 0 )
+    {
+    expr = expr.substr(skip);
+    }
+
+  cexpr = "";
+  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());
+    }
+
+  // Handle network paths
+  if ( skip > 0 )
+    {
+    this->ProcessDirectory(0, fexpr.substr(0, skip) + "/",
+      true);     
+    }
+  else
+    {
+    this->ProcessDirectory(0, "/", true);
+    }
+  return true;
+}
+
+void Glob::AddExpression(const char* expr)
+{
+  m_Internals->Expressions.push_back(
+    cmsys::RegularExpression(
+      this->ConvertExpression(expr).c_str()));
+  m_Internals->TextExpressions.push_back(this->ConvertExpression(expr));
+}
+
+} // namespace KWSYS_NAMESPACE
+