505 lines
11 KiB
C++
505 lines
11 KiB
C++
/*=========================================================================
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Program: Insight Segmentation & Registration Toolkit
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2000 National Library of Medicine
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All rights reserved.
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See COPYRIGHT.txt for copyright details.
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=========================================================================*/
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#include "cmSystemTools.h"
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#include "errno.h"
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#include "stdio.h"
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#include <sys/stat.h>
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#include "cmRegularExpression.h"
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#if defined(_MSC_VER) || defined(__BORLANDC__)
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#include <windows.h>
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#include <direct.h>
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#define _unlink unlink
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inline int Mkdir(const char* dir)
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{
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return _mkdir(dir);
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}
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#else
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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inline int Mkdir(const char* dir)
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{
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return mkdir(dir, 00777);
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}
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#endif
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bool cmSystemTools::s_ErrorOccured = false;
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// adds the elements of the env variable path to the arg passed in
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void cmSystemTools::GetPath(std::vector<std::string>& path)
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{
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#if defined(_WIN32) && !defined(__CYGWIN__)
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char* pathSep = ";";
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#else
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char* pathSep = ":";
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#endif
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std::string pathEnv = getenv("PATH");
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std::string::size_type start =0;
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bool done = false;
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while(!done)
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{
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std::string::size_type endpos = pathEnv.find(pathSep, start);
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if(endpos != std::string::npos)
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{
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path.push_back(pathEnv.substr(start, endpos-start));
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start = endpos+1;
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}
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else
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{
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done = true;
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}
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}
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}
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const char* cmSystemTools::GetExecutableExtension()
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{
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#if defined(_WIN32)
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return ".exe";
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#else
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return "";
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#endif
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}
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bool cmSystemTools::MakeDirectory(const char* path)
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{
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std::string dir = path;
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// replace all of the \ with /
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size_t pos = 0;
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while((pos = dir.find('\\', pos)) != std::string::npos)
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{
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dir[pos] = '/';
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pos++;
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}
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pos = dir.find(':');
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if(pos == std::string::npos)
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{
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pos = 0;
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}
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while((pos = dir.find('/', pos)) != std::string::npos)
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{
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std::string topdir = dir.substr(0, pos);
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Mkdir(topdir.c_str());
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pos++;
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}
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if(Mkdir(path) != 0)
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{
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// if it is some other error besides directory exists
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// then return false
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if(errno != EEXIST)
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{
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return false;
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}
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}
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return true;
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}
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// replace replace with with as many times as it shows up in source.
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// write the result into source.
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void cmSystemTools::ReplaceString(std::string& source,
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const char* replace,
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const char* with)
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{
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int lengthReplace = strlen(replace);
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std::string rest;
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size_t start = source.find(replace);
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while(start != std::string::npos)
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{
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rest = source.substr(start+lengthReplace);
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source = source.substr(0, start);
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source += with;
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source += rest;
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start = source.find(replace, start + lengthReplace );
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}
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}
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std::string cmSystemTools::EscapeSpaces(const char* str)
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{
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std::string result = "";
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for(const char* ch = str; *ch != '\0'; ++ch)
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{
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if(*ch == ' ')
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{
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result += '\\';
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}
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result += *ch;
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}
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return result;
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}
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// return true if the file exists
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bool cmSystemTools::FileExists(const char* filename)
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{
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struct stat fs;
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if (stat(filename, &fs) != 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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// convert windows slashes to unix slashes \ with /
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void cmSystemTools::ConvertToUnixSlashes(std::string& path)
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{
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std::string::size_type pos = path.find('\\');
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while(pos != std::string::npos)
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{
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path[pos] = '/';
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pos = path.find('\\');
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}
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// remove any trailing slash
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if(path[path.size()-1] == '/')
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{
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path = path.substr(0, path.size()-1);
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}
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}
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int cmSystemTools::Grep(const char* dir, const char* file,
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const char* expression)
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{
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std::string path = dir;
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path += "/";
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path += file;
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std::ifstream fin(path.c_str());
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char buffer[2056];
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int count = 0;
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cmRegularExpression reg(expression);
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while(fin)
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{
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fin.getline(buffer, sizeof(buffer));
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count += reg.find(buffer);
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}
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return count;
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}
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void cmSystemTools::ConvertCygwinPath(std::string& pathname)
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{
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if(pathname.find("/cygdrive/") != std::string::npos)
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{
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std::string cygStuff = pathname.substr(0, 11);
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std::string replace;
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replace += cygStuff.at(10);
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replace += ":";
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cmSystemTools::ReplaceString(pathname, cygStuff.c_str(), replace.c_str());
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}
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}
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bool cmSystemTools::ParseFunction(std::ifstream& fin,
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std::string& name,
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std::vector<std::string>& arguments)
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{
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name = "";
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arguments = std::vector<std::string>();
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const int BUFFER_SIZE = 4096;
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char inbuffer[BUFFER_SIZE];
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if(!fin)
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{
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return false;
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}
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if(fin.getline(inbuffer, BUFFER_SIZE ) )
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{
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cmRegularExpression blankLine("^[ \t]*$");
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cmRegularExpression comment("^[ \t]*#.*$");
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cmRegularExpression oneLiner("^[ \t]*([A-Za-z_0-9]*)[ \t]*\\((.*)\\)[ \t]*$");
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cmRegularExpression multiLine("^[ \t]*([A-Za-z_0-9]*)[ \t]*\\((.*)$");
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cmRegularExpression lastLine("^(.*)\\)[ \t]*$");
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// BEGIN VERBATIM JUNK SHOULD BE REMOVED
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cmRegularExpression verbatim("BEGIN MAKE VERBATIM");
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if(verbatim.find(inbuffer))
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{
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cmRegularExpression endVerbatim("END MAKE VERBATIM");
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name = "VERBATIM";
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bool done = false;
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while(!done)
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{
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if(fin.getline(inbuffer, BUFFER_SIZE))
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{
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if(endVerbatim.find(inbuffer))
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{
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done = true;
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}
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else
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{
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arguments.push_back(inbuffer);
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}
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}
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else
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{
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done = true;
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}
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}
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return true;
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}
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// END VERBATIM JUNK SHOULD BE REMOVED
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// check for black line or comment
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if(blankLine.find(inbuffer) || comment.find(inbuffer))
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{
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return false;
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}
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// look for a oneline fun(arg arg2)
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else if(oneLiner.find(inbuffer))
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{
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// the arguments are the second match
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std::string args = oneLiner.match(2);
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name = oneLiner.match(1);
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// break up the arguments
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cmSystemTools::GetArguments(args, arguments);
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return true;
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}
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// look for a start of a multiline with no trailing ")" fun(arg arg2
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else if(multiLine.find(inbuffer))
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{
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name = multiLine.match(1);
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std::string args = multiLine.match(2);
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cmSystemTools::GetArguments(args, arguments);
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// Read lines until the closing paren is hit
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bool done = false;
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while(!done)
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{
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// read lines until the end paren is found
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if(fin.getline(inbuffer, BUFFER_SIZE ) )
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{
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// Check for comment lines and ignore them.
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if(blankLine.find(inbuffer) || comment.find(inbuffer))
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{ continue; }
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// Is this the last line?
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if(lastLine.find(inbuffer))
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{
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done = true;
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std::string args = lastLine.match(1);
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cmSystemTools::GetArguments(args, arguments);
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}
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else
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{
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std::string line = inbuffer;
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cmSystemTools::GetArguments(line, arguments);
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}
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}
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else
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{
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cmSystemTools::Error("Parse error in read function missing end )",
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inbuffer);
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return false;
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}
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}
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return true;
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}
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else
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{
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cmSystemTools::Error("Parse error in read function ", inbuffer);
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return false;
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}
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}
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return false;
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}
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void cmSystemTools::GetArguments(std::string& line,
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std::vector<std::string>& arguments)
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{
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// Match a normal argument (not quoted, no spaces).
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cmRegularExpression normalArgument("[\t ]*([^\" \t]+)[\t ]*");
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// Match a quoted argument (surrounded by double quotes, spaces allowed).
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cmRegularExpression quotedArgument("[\t ]*(\"[^\"]*\")[\t ]*");
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bool done = false;
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while(!done)
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{
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std::string arg;
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long endpos;
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bool foundQuoted = quotedArgument.find(line.c_str());
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bool foundNormal = normalArgument.find(line.c_str());
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if(foundQuoted && foundNormal)
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{
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// Both matches were found. Take the earlier one.
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if(normalArgument.start(1) < quotedArgument.start(1))
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{
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arg = normalArgument.match(1);
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endpos = normalArgument.end(1);
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}
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else
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{
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arg = quotedArgument.match(1);
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endpos = quotedArgument.end(1);
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// Strip off the double quotes on the ends.
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arg = arg.substr(1, arg.length()-2);
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}
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}
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else if (foundQuoted)
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{
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arg = quotedArgument.match(1);
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endpos = quotedArgument.end(1);
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// Strip off the double quotes on the ends.
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arg = arg.substr(1, arg.length()-2);
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}
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else if(foundNormal)
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{
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arg = normalArgument.match(1);
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endpos = normalArgument.end(1);
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}
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else
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{
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done = true;
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}
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if(!done)
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{
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arguments.push_back(arg);
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line = line.substr(endpos, line.length() - endpos);
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}
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}
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}
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void cmSystemTools::Error(const char* m1, const char* m2,
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const char* m3, const char* m4)
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{
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std::string message = "CMake Error: ";
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if(m1)
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{
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message += m1;
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}
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if(m2)
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{
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message += m2;
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}
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if(m3)
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{
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message += m3;
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}
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if(m4)
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{
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message += m4;
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}
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cmSystemTools::s_ErrorOccured = true;
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#if defined(_WIN32) && !defined(__CYGWIN__)
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::MessageBox(0, message.c_str(), 0, MB_OK);
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std::cerr << message.c_str() << std::endl;
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#else
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std::cerr << message.c_str() << std::endl;
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#endif
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}
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void cmSystemTools::CopyFileIfDifferent(const char* source,
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const char* destination)
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{
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if(cmSystemTools::FilesDiffer(source, destination))
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{
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cmSystemTools::cmCopyFile(source, destination);
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}
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}
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bool cmSystemTools::FilesDiffer(const char* source,
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const char* destination)
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{
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struct stat statSource;
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if (stat(source, &statSource) != 0)
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{
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return true;
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}
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struct stat statDestination;
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if (stat(destination, &statDestination) != 0)
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{
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return true;
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}
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if(statSource.st_size != statDestination.st_size)
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{
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return true;
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}
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std::ifstream finSource(source);
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std::ifstream finDestination(destination);
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if(!finSource || !finDestination)
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{
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return true;
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}
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while(finSource && finDestination)
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{
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char s, d;
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finSource >> s;
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finDestination >> d;
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if(s != d)
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{
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return true;
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}
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}
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return false;
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}
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void cmSystemTools::cmCopyFile(const char* source,
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const char* destination)
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{
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std::ifstream fin(source);
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char buff[4096];
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std::ofstream fout(destination);
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if(!fout )
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{
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cmSystemTools::Error("CopyFile failed to open input file", source);
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}
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if(!fin)
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{
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cmSystemTools::Error("CopyFile failed to open output file", destination);
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}
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while(fin)
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{
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fin.getline(buff, 4096);
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if(fin)
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{
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fout << buff << "\n";
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}
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}
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}
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// return true if the file exists
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long int cmSystemTools::ModifiedTime(const char* filename)
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{
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struct stat fs;
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if (stat(filename, &fs) != 0)
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{
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return 0;
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}
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else
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{
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return (long int)fs.st_mtime;
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}
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}
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void cmSystemTools::RemoveFile(const char* source)
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{
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unlink(source);
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}
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