491 lines
12 KiB
C++
491 lines
12 KiB
C++
/*=========================================================================
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Program: KWSys - Kitware System Library
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Module: $RCSfile$
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Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#include "kwsysPrivate.h"
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#include KWSYS_HEADER(Glob.hxx)
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#include KWSYS_HEADER(Configure.hxx)
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#include KWSYS_HEADER(RegularExpression.hxx)
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#include KWSYS_HEADER(SystemTools.hxx)
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#include KWSYS_HEADER(Directory.hxx)
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#include KWSYS_HEADER(stl/string)
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#include KWSYS_HEADER(stl/vector)
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// Work-around CMake dependency scanning limitation. This must
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// duplicate the above list of headers.
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#if 0
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# include "Glob.hxx.in"
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# include "Directory.hxx.in"
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# include "Configure.hxx.in"
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# include "RegularExpression.hxx.in"
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# include "SystemTools.hxx.in"
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# include "kwsys_stl.hxx.in"
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# include "kwsys_stl_string.hxx.in"
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#endif
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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namespace KWSYS_NAMESPACE
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{
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#if defined(_WIN32) || defined(__APPLE__) || defined(__CYGWIN__)
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// On Windows and apple, no difference between lower and upper case
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# define KWSYS_GLOB_CASE_INDEPENDENT
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#endif
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#if defined(_WIN32) || defined(__CYGWIN__)
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// Handle network paths
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# define KWSYS_GLOB_SUPPORT_NETWORK_PATHS
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#endif
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//----------------------------------------------------------------------------
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class GlobInternals
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{
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public:
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kwsys_stl::vector<kwsys_stl::string> Files;
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kwsys_stl::vector<kwsys::RegularExpression> Expressions;
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};
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//----------------------------------------------------------------------------
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Glob::Glob()
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{
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this->Internals = new GlobInternals;
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this->Recurse = false;
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this->Relative = "";
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}
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//----------------------------------------------------------------------------
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Glob::~Glob()
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{
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delete this->Internals;
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}
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//----------------------------------------------------------------------------
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kwsys_stl::vector<kwsys_stl::string>& Glob::GetFiles()
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{
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return this->Internals->Files;
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}
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//----------------------------------------------------------------------------
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kwsys_stl::string Glob::PatternToRegex(const kwsys_stl::string& pattern,
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bool require_whole_string)
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{
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// Incrementally build the regular expression from the pattern.
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kwsys_stl::string regex = require_whole_string? "^" : "";
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kwsys_stl::string::const_iterator pattern_first = pattern.begin();
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kwsys_stl::string::const_iterator pattern_last = pattern.end();
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for(kwsys_stl::string::const_iterator i = pattern_first;
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i != pattern_last; ++i)
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{
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int c = *i;
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if(c == '*')
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{
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// A '*' (not between brackets) matches any string.
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regex += ".*";
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}
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else if(c == '?')
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{
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// A '?' (not between brackets) matches any single character.
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regex += ".";
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}
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else if(c == '[')
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{
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// Parse out the bracket expression. It begins just after the
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// opening character.
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kwsys_stl::string::const_iterator bracket_first = i+1;
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kwsys_stl::string::const_iterator bracket_last = bracket_first;
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// The first character may be complementation '!' or '^'.
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if(bracket_last != pattern_last &&
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(*bracket_last == '!' || *bracket_last == '^'))
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{
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++bracket_last;
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}
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// If the next character is a ']' it is included in the brackets
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// because the bracket string may not be empty.
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if(bracket_last != pattern_last && *bracket_last == ']')
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{
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++bracket_last;
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}
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// Search for the closing ']'.
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while(bracket_last != pattern_last && *bracket_last != ']')
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{
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++bracket_last;
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}
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// Check whether we have a complete bracket string.
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if(bracket_last == pattern_last)
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{
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// The bracket string did not end, so it was opened simply by
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// a '[' that is supposed to be matched literally.
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regex += "\\[";
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}
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else
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{
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// Convert the bracket string to its regex equivalent.
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kwsys_stl::string::const_iterator k = bracket_first;
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// Open the regex block.
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regex += "[";
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// A regex range complement uses '^' instead of '!'.
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if(k != bracket_last && *k == '!')
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{
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regex += "^";
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++k;
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}
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// Convert the remaining characters.
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for(; k != bracket_last; ++k)
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{
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// Backslashes must be escaped.
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if(*k == '\\')
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{
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regex += "\\";
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}
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// Store this character.
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regex += *k;
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}
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// Close the regex block.
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regex += "]";
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// Jump to the end of the bracket string.
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i = bracket_last;
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}
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}
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else
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{
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// A single character matches itself.
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int ch = c;
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if(!(('a' <= ch && ch <= 'z') ||
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('A' <= ch && ch <= 'Z') ||
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('0' <= ch && ch <= '9')))
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{
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// Escape the non-alphanumeric character.
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regex += "\\";
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}
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#if defined(KWSYS_GLOB_CASE_INDEPENDENT)
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else
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{
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// On case-insensitive systems file names are converted to lower
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// case before matching.
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ch = tolower(ch);
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}
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#endif
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// Store the character.
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regex.append(1, static_cast<char>(ch));
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}
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}
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if(require_whole_string)
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{
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regex += "$";
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}
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return regex;
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}
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//----------------------------------------------------------------------------
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void Glob::RecurseDirectory(kwsys_stl::string::size_type start,
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const kwsys_stl::string& dir, bool dir_only)
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{
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kwsys::Directory d;
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if ( !d.Load(dir.c_str()) )
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{
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return;
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}
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unsigned long cc;
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kwsys_stl::string fullname;
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kwsys_stl::string realname;
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kwsys_stl::string fname;
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for ( cc = 0; cc < d.GetNumberOfFiles(); cc ++ )
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{
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fname = d.GetFile(cc);
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if ( strcmp(fname.c_str(), ".") == 0 ||
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strcmp(fname.c_str(), "..") == 0 )
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{
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continue;
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}
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if ( start == 0 )
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{
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realname = dir + fname;
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}
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else
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{
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realname = dir + "/" + fname;
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}
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#if defined( KWSYS_GLOB_CASE_INDEPENDENT )
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// On Windows and apple, no difference between lower and upper case
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fname = kwsys::SystemTools::LowerCase(fname);
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#endif
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if ( start == 0 )
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{
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fullname = dir + fname;
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}
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else
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{
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fullname = dir + "/" + fname;
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}
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if ( !dir_only || !kwsys::SystemTools::FileIsDirectory(realname.c_str()) )
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{
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if ( this->Internals->Expressions[
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this->Internals->Expressions.size()-1].find(fname.c_str()) )
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{
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this->AddFile(this->Internals->Files, realname.c_str());
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}
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}
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if ( kwsys::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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}
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}
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//----------------------------------------------------------------------------
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void Glob::ProcessDirectory(kwsys_stl::string::size_type start,
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const kwsys_stl::string& dir, bool dir_only)
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{
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//kwsys_ios::cout << "ProcessDirectory: " << dir << kwsys_ios::endl;
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bool last = ( start == this->Internals->Expressions.size()-1 );
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if ( last && this->Recurse )
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{
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this->RecurseDirectory(start, dir, dir_only);
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return;
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}
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kwsys::Directory d;
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if ( !d.Load(dir.c_str()) )
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{
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return;
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}
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unsigned long cc;
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kwsys_stl::string fullname;
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kwsys_stl::string realname;
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kwsys_stl::string fname;
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for ( cc = 0; cc < d.GetNumberOfFiles(); cc ++ )
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{
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fname = d.GetFile(cc);
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if ( strcmp(fname.c_str(), ".") == 0 ||
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strcmp(fname.c_str(), "..") == 0 )
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{
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continue;
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}
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if ( start == 0 )
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{
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realname = dir + fname;
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}
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else
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{
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realname = dir + "/" + fname;
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}
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#if defined(KWSYS_GLOB_CASE_INDEPENDENT)
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// On case-insensitive file systems convert to lower case for matching.
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fname = kwsys::SystemTools::LowerCase(fname);
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#endif
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if ( start == 0 )
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{
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fullname = dir + fname;
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}
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else
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{
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fullname = dir + "/" + fname;
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}
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//kwsys_ios::cout << "Look at file: " << fname << kwsys_ios::endl;
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//kwsys_ios::cout << "Match: "
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// << this->Internals->TextExpressions[start].c_str() << kwsys_ios::endl;
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//kwsys_ios::cout << "Full name: " << fullname << kwsys_ios::endl;
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if ( (!dir_only || !last) &&
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!kwsys::SystemTools::FileIsDirectory(realname.c_str()) )
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{
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continue;
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}
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if ( this->Internals->Expressions[start].find(fname.c_str()) )
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{
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if ( last )
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{
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this->AddFile(this->Internals->Files, realname.c_str());
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}
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else
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{
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this->ProcessDirectory(start+1, realname + "/", dir_only);
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}
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}
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}
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}
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//----------------------------------------------------------------------------
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bool Glob::FindFiles(const kwsys_stl::string& inexpr)
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{
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kwsys_stl::string cexpr;
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kwsys_stl::string::size_type cc;
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kwsys_stl::string expr = inexpr;
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this->Internals->Expressions.clear();
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this->Internals->Files.clear();
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if ( !kwsys::SystemTools::FileIsFullPath(expr.c_str()) )
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{
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expr = kwsys::SystemTools::GetCurrentWorkingDirectory();
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expr += "/" + inexpr;
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}
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kwsys_stl::string fexpr = expr;
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int skip = 0;
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int last_slash = 0;
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for ( cc = 0; cc < expr.size(); cc ++ )
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{
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if ( cc > 0 && expr[cc] == '/' && expr[cc-1] != '\\' )
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{
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last_slash = static_cast<int>(cc);
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}
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if ( cc > 0 &&
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(expr[cc] == '[' || expr[cc] == '?' || expr[cc] == '*') &&
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expr[cc-1] != '\\' )
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{
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break;
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}
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}
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if ( last_slash > 0 )
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{
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//kwsys_ios::cout << "I can skip: " << fexpr.substr(0, last_slash)
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//<< kwsys_ios::endl;
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skip = last_slash;
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}
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if ( skip == 0 )
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{
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#if defined( KWSYS_GLOB_SUPPORT_NETWORK_PATHS )
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// Handle network paths
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if ( expr[0] == '/' && expr[1] == '/' )
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{
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int cnt = 0;
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for ( cc = 2; cc < expr.size(); cc ++ )
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{
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if ( expr[cc] == '/' )
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{
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cnt ++;
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if ( cnt == 2 )
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{
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break;
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}
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}
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}
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skip = int(cc + 1);
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}
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else
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#endif
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// Handle drive letters on Windows
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if ( expr[1] == ':' && expr[0] != '/' )
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{
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skip = 2;
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}
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}
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if ( skip > 0 )
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{
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expr = expr.substr(skip);
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}
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cexpr = "";
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for ( cc = 0; cc < expr.size(); cc ++ )
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{
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int ch = expr[cc];
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if ( ch == '/' )
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{
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if ( cexpr.size() > 0 )
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{
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this->AddExpression(cexpr.c_str());
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}
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cexpr = "";
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}
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else
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{
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cexpr.append(1, static_cast<char>(ch));
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}
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}
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if ( cexpr.size() > 0 )
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{
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this->AddExpression(cexpr.c_str());
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}
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// Handle network paths
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if ( skip > 0 )
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{
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this->ProcessDirectory(0, fexpr.substr(0, skip) + "/",
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true);
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}
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else
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{
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this->ProcessDirectory(0, "/", true);
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}
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return true;
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}
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//----------------------------------------------------------------------------
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void Glob::AddExpression(const char* expr)
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{
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this->Internals->Expressions.push_back(
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kwsys::RegularExpression(
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this->PatternToRegex(expr).c_str()));
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}
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//----------------------------------------------------------------------------
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void Glob::SetRelative(const char* dir)
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{
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if ( !dir )
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{
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this->Relative = "";
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return;
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}
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this->Relative = dir;
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}
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//----------------------------------------------------------------------------
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const char* Glob::GetRelative()
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{
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if ( this->Relative.empty() )
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{
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return 0;
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}
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return this->Relative.c_str();
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}
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//----------------------------------------------------------------------------
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void Glob::AddFile(kwsys_stl::vector<kwsys_stl::string>& files, const char* file)
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{
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if ( !this->Relative.empty() )
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{
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files.push_back(kwsys::SystemTools::RelativePath(this->Relative.c_str(), file));
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}
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else
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{
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files.push_back(file);
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}
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}
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} // namespace KWSYS_NAMESPACE
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