CMake/Source/cmSystemTools.cxx

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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
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Copyright (c) 2002 Insight Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
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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.
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=========================================================================*/
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#include "cmSystemTools.h"
#include "errno.h"
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#include "stdio.h"
#include <sys/stat.h>
#include "cmRegularExpression.h"
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#include <ctype.h>
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#include "cmDirectory.h"
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// support for realpath call
#ifndef _WIN32
#include <limits.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/wait.h>
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#endif
#if defined(_MSC_VER) || defined(__BORLANDC__)
#include <windows.h>
#include <direct.h>
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#define _unlink unlink
inline int Mkdir(const char* dir)
{
return _mkdir(dir);
}
inline const char* Getcwd(char* buf, unsigned int len)
{
return _getcwd(buf, len);
}
inline int Chdir(const char* dir)
{
#if defined(__BORLANDC__)
return chdir(dir);
#else
return _chdir(dir);
#endif
}
#else
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
inline int Mkdir(const char* dir)
{
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return mkdir(dir, 00777);
}
inline const char* Getcwd(char* buf, unsigned int len)
{
return getcwd(buf, len);
}
inline int Chdir(const char* dir)
{
return chdir(dir);
}
#endif
bool cmSystemTools::s_DisableRunCommandOutput = false;
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bool cmSystemTools::s_ErrorOccured = false;
bool cmSystemTools::s_DisableMessages = false;
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void (*cmSystemTools::s_ErrorCallback)(const char*, const char*, bool&);
// adds the elements of the env variable path to the arg passed in
void cmSystemTools::GetPath(std::vector<std::string>& path)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
const char* pathSep = ";";
#else
const char* pathSep = ":";
#endif
std::string pathEnv = getenv("PATH");
// A hack to make the below algorithm work.
if(pathEnv[pathEnv.length()-1] != ':')
{
pathEnv += pathSep;
}
std::string::size_type start =0;
bool done = false;
while(!done)
{
std::string::size_type endpos = pathEnv.find(pathSep, start);
if(endpos != std::string::npos)
{
path.push_back(pathEnv.substr(start, endpos-start));
start = endpos+1;
}
else
{
done = true;
}
}
for(std::vector<std::string>::iterator i = path.begin();
i != path.end(); ++i)
{
cmSystemTools::ConvertToUnixSlashes(*i);
}
}
const char* cmSystemTools::GetExecutableExtension()
{
#if defined(_WIN32) || defined(__CYGWIN__)
return ".exe";
#else
return "";
#endif
}
bool cmSystemTools::MakeDirectory(const char* path)
{
if(cmSystemTools::FileExists(path))
{
return true;
}
std::string dir = path;
if(dir.size() == 0)
{
return false;
}
cmSystemTools::ConvertToUnixSlashes(dir);
std::string::size_type pos = dir.find(':');
if(pos == std::string::npos)
{
pos = 0;
}
std::string topdir;
while((pos = dir.find('/', pos)) != std::string::npos)
{
topdir = dir.substr(0, pos);
Mkdir(topdir.c_str());
pos++;
}
if(dir[dir.size()-1] == '/')
{
topdir = dir.substr(0, dir.size());
}
else
{
topdir = dir;
}
if(Mkdir(topdir.c_str()) != 0)
{
// There is a bug in the Borland Run time library which makes MKDIR
// return EACCES when it should return EEXISTS
// if it is some other error besides directory exists
// then return false
if( (errno != EEXIST)
#ifdef __BORLANDC__
&& (errno != EACCES)
#endif
)
{
cmSystemTools::Error("Faild to create directory:", path);
return false;
}
}
return true;
}
// replace replace with with as many times as it shows up in source.
// write the result into source.
void cmSystemTools::ReplaceString(std::string& source,
const char* replace,
const char* with)
{
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std::string::size_type lengthReplace = strlen(replace);
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std::string rest;
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std::string::size_type start = source.find(replace);
while(start != std::string::npos)
{
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rest = source.substr(start+lengthReplace);
source = source.substr(0, start);
source += with;
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source += rest;
start = source.find(replace, start + lengthReplace );
}
}
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#if defined(_WIN32) && !defined(__CYGWIN__)
// Get the data of key value.
// Example :
// HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.1\InstallPath
// => will return the data of the "default" value of the key
// HKEY_LOCAL_MACHINE\SOFTWARE\Scriptics\Tcl\8.4;Root
// => will return the data of the "Root" value of the key
bool ReadAValue(std::string &res, const char *key)
{
// find the primary key
std::string primary = key;
std::string second;
std::string valuename;
size_t start = primary.find("\\");
if (start == std::string::npos)
{
return false;
}
size_t valuenamepos = primary.find(";");
if (valuenamepos != std::string::npos)
{
valuename = primary.substr(valuenamepos+1);
}
second = primary.substr(start+1, valuenamepos-start-1);
primary = primary.substr(0, start);
HKEY primaryKey;
if (primary == "HKEY_CURRENT_USER")
{
primaryKey = HKEY_CURRENT_USER;
}
if (primary == "HKEY_CURRENT_CONFIG")
{
primaryKey = HKEY_CURRENT_CONFIG;
}
if (primary == "HKEY_CLASSES_ROOT")
{
primaryKey = HKEY_CLASSES_ROOT;
}
if (primary == "HKEY_LOCAL_MACHINE")
{
primaryKey = HKEY_LOCAL_MACHINE;
}
if (primary == "HKEY_USERS")
{
primaryKey = HKEY_USERS;
}
HKEY hKey;
if(RegOpenKeyEx(primaryKey, second.c_str(),
0, KEY_READ, &hKey) != ERROR_SUCCESS)
{
return false;
}
else
{
DWORD dwType, dwSize;
dwSize = 1023;
char data[1024];
if(RegQueryValueEx(hKey, (LPTSTR)valuename.c_str(), NULL, &dwType,
(BYTE *)data, &dwSize) == ERROR_SUCCESS)
{
if (dwType == REG_SZ)
{
res = data;
return true;
}
}
}
return false;
}
#endif
// replace replace with with as many times as it shows up in source.
// write the result into source.
void cmSystemTools::ExpandRegistryValues(std::string& source)
{
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#if defined(_WIN32) && !defined(__CYGWIN__)
// Regular expression to match anything inside [...] that begins in HKEY.
// Note that there is a special rule for regular expressions to match a
// close square-bracket inside a list delimited by square brackets.
// The "[^]]" part of this expression will match any character except
// a close square-bracket. The ']' character must be the first in the
// list of characters inside the [^...] block of the expression.
cmRegularExpression regEntry("\\[(HKEY[^]]*)\\]");
// check for black line or comment
while (regEntry.find(source))
{
// the arguments are the second match
std::string key = regEntry.match(1);
std::string val;
if (ReadAValue(val,key.c_str()))
{
std::string reg = "[";
reg += key + "]";
cmSystemTools::ReplaceString(source, reg.c_str(), val.c_str());
}
else
{
std::string reg = "[";
reg += key + "]";
cmSystemTools::ReplaceString(source, reg.c_str(), "/registry");
}
}
#endif
}
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std::string cmSystemTools::EscapeQuotes(const char* str)
{
std::string result = "";
for(const char* ch = str; *ch != '\0'; ++ch)
{
if(*ch == '"')
{
result += '\\';
}
result += *ch;
}
return result;
}
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bool cmSystemTools::SameFile(const char* file1, const char* file2)
{
struct stat fileStat1, fileStat2;
if (stat(file1, &fileStat1) == 0 && stat(file2, &fileStat2) == 0)
{
// see if the files are the same file
// check the device inode and size
if(fileStat2.st_dev == fileStat1.st_dev &&
fileStat2.st_ino == fileStat1.st_ino &&
fileStat2.st_size == fileStat1.st_size
)
{
return true;
}
}
return false;
}
// return true if the file exists
bool cmSystemTools::FileExists(const char* filename)
{
struct stat fs;
if (stat(filename, &fs) != 0)
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{
return false;
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}
else
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{
return true;
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}
}
// Return a capitalized string (i.e the first letter is uppercased, all other
// are lowercased)
std::string cmSystemTools::Capitalized(const std::string& s)
{
std::string n;
n.resize(s.size());
n[0] = toupper(s[0]);
for (size_t i = 1; i < s.size(); i++)
{
n[i] = tolower(s[i]);
}
return n;
}
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// Return a lower case string
std::string cmSystemTools::LowerCase(const std::string& s)
{
std::string n;
n.resize(s.size());
for (size_t i = 0; i < s.size(); i++)
{
n[i] = tolower(s[i]);
}
return n;
}
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// Return a lower case string
std::string cmSystemTools::UpperCase(const std::string& s)
{
std::string n;
n.resize(s.size());
for (size_t i = 0; i < s.size(); i++)
{
n[i] = toupper(s[i]);
}
return n;
}
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// convert windows slashes to unix slashes
void cmSystemTools::ConvertToUnixSlashes(std::string& path)
{
std::string::size_type pos = 0;
while((pos = path.find('\\', pos)) != std::string::npos)
{
path[pos] = '/';
pos++;
}
// remove any trailing slash
if(path.size() && path[path.size()-1] == '/')
{
path = path.substr(0, path.size()-1);
}
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// if there is a tilda ~ then replace it with HOME
if(path.find("~") == 0)
{
if (getenv("HOME"))
{
path = std::string(getenv("HOME")) + path.substr(1);
}
}
// if there is a /tmp_mnt in a path get rid of it!
// stupid sgi's
if(path.find("/tmp_mnt") == 0)
{
path = path.substr(8);
}
}
// change // to /, and escape any spaces in the path
std::string cmSystemTools::ConvertToUnixOutputPath(const char* path)
{
std::string ret = path;
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// remove // except at the beginning might be a cygwin drive
std::string::size_type pos = 1;
while((pos = ret.find("//", pos)) != std::string::npos)
{
ret.erase(pos, 1);
}
// now escape spaces if there is a space in the path
if(ret.find(" ") != std::string::npos)
{
std::string result = "";
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char lastch = 1;
for(const char* ch = ret.c_str(); *ch != '\0'; ++ch)
{
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// if it is already escaped then don't try to escape it again
if(*ch == ' ' && lastch != '\\')
{
result += '\\';
}
result += *ch;
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lastch = *ch;
}
ret = result;
}
return ret;
}
std::string cmSystemTools::EscapeSpaces(const char* str)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
std::string result;
// if there are spaces
std::string temp = str;
if (temp.find(" ") != std::string::npos &&
temp.find("\"")==std::string::npos)
{
result = "\"";
result += str;
result += "\"";
return result;
}
return str;
#else
std::string result = "";
for(const char* ch = str; *ch != '\0'; ++ch)
{
if(*ch == ' ')
{
result += '\\';
}
result += *ch;
}
return result;
#endif
}
std::string cmSystemTools::ConvertToOutputPath(const char* path)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
return cmSystemTools::ConvertToWindowsOutputPath(path);
#else
return cmSystemTools::ConvertToUnixOutputPath(path);
#endif
}
// remove double slashes not at the start
std::string cmSystemTools::ConvertToWindowsOutputPath(const char* path)
{
std::string ret = path;
std::string::size_type pos = 0;
// first convert all of the slashes
while((pos = ret.find('/', pos)) != std::string::npos)
{
ret[pos] = '\\';
pos++;
}
// check for really small paths
if(ret.size() < 2)
{
return ret;
}
// now clean up a bit and remove double slashes
// Only if it is not the first position in the path which is a network
// path on windows
pos = 1; // start at position 1
while((pos = ret.find("\\\\", pos)) != std::string::npos)
{
ret.erase(pos, 1);
}
// now double quote the path if it has spaces in it
// and is not already double quoted
if(ret.find(" ") != std::string::npos
&& ret[0] != '\"')
{
std::string result;
result = "\"" + ret + "\"";
ret = result;
}
return ret;
}
bool cmSystemTools::ParseFunction(std::ifstream& fin,
std::string& name,
std::vector<std::string>& arguments,
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const char* filename,
bool& parseError)
{
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parseError = false;
name = "";
arguments = std::vector<std::string>();
const int BUFFER_SIZE = 4096;
char inbuffer[BUFFER_SIZE];
if(!fin)
{
return false;
}
if(fin.getline(inbuffer, BUFFER_SIZE ) )
{
cmRegularExpression blankLine("^[ \t\r]*$");
cmRegularExpression comment("^[ \t]*#.*$");
cmRegularExpression oneLiner("^[ \t]*([A-Za-z_0-9]*)[ \t]*\\((.*)\\)[ \t\r]*$");
cmRegularExpression multiLine("^[ \t]*([A-Za-z_0-9]*)[ \t]*\\((.*)$");
cmRegularExpression lastLine("^(.*)\\)[ \t\r]*$");
// check for black line or comment
if(blankLine.find(inbuffer) || comment.find(inbuffer))
{
return false;
}
// look for a oneline fun(arg arg2)
else if(oneLiner.find(inbuffer))
{
// the arguments are the second match
std::string args = oneLiner.match(2);
name = oneLiner.match(1);
// break up the arguments
cmSystemTools::GetArguments(args, arguments);
return true;
}
// look for a start of a multiline with no trailing ")" fun(arg arg2
else if(multiLine.find(inbuffer))
{
name = multiLine.match(1);
std::string args = multiLine.match(2);
cmSystemTools::GetArguments(args, arguments);
// Read lines until the closing paren is hit
bool done = false;
while(!done)
{
// read lines until the end paren is found
if(fin.getline(inbuffer, BUFFER_SIZE ) )
{
// Check for comment lines and ignore them.
if(blankLine.find(inbuffer) || comment.find(inbuffer))
{ continue; }
// Is this the last line?
if(lastLine.find(inbuffer))
{
done = true;
std::string args = lastLine.match(1);
cmSystemTools::GetArguments(args, arguments);
}
else
{
std::string line = inbuffer;
cmSystemTools::GetArguments(line, arguments);
}
}
else
{
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parseError = true;
cmSystemTools::Error("Parse error in read function missing end )\nIn File: ",
filename, "\nCurrent line:", inbuffer);
return false;
}
}
return true;
}
else
{
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parseError = true;
cmSystemTools::Error("Parse error in read function\nIn file:",
filename, "\nCurrent line:", inbuffer);
return false;
}
}
return false;
}
void cmSystemTools::GetArguments(std::string& line,
std::vector<std::string>& arguments)
{
// Match a normal argument (not quoted, no spaces).
cmRegularExpression normalArgument("[ \t]*(([^ \t\r\\]|[\\].)+)[ \t\r]*");
// Match a quoted argument (surrounded by double quotes, spaces allowed).
cmRegularExpression quotedArgument("[ \t]*(\"([^\"\\]|[\\].)*\")[ \t\r]*");
bool done = false;
while(!done)
{
std::string arg;
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unsigned int endpos;
bool foundQuoted = quotedArgument.find(line.c_str());
bool foundNormal = normalArgument.find(line.c_str());
if(foundQuoted && foundNormal)
{
// Both matches were found. Take the earlier one.
// Favor double-quoted version if there is a tie.
if(normalArgument.start(1) < quotedArgument.start(1))
{
arg = normalArgument.match(1);
endpos = normalArgument.end(1);
}
else
{
arg = quotedArgument.match(1);
endpos = quotedArgument.end(1);
// Strip off the double quotes on the ends.
arg = arg.substr(1, arg.length()-2);
}
}
else if (foundQuoted)
{
arg = quotedArgument.match(1);
endpos = quotedArgument.end(1);
// Strip off the double quotes on the ends.
arg = arg.substr(1, arg.length()-2);
}
else if(foundNormal)
{
arg = normalArgument.match(1);
endpos = normalArgument.end(1);
}
else
{
done = true;
}
if(!done)
{
arguments.push_back(cmSystemTools::RemoveEscapes(arg.c_str()));
line = line.substr(endpos, line.length() - endpos);
}
}
}
std::string cmSystemTools::RemoveEscapes(const char* s)
{
std::string result = "";
for(const char* ch = s; *ch; ++ch)
{
if(*ch == '\\')
{
++ch;
switch (*ch)
{
case '\\': result.insert(result.end(), '\\'); break;
case '"': result.insert(result.end(), '"'); break;
case ' ': result.insert(result.end(), ' '); break;
case 't': result.insert(result.end(), '\t'); break;
case 'n': result.insert(result.end(), '\n'); break;
case 'r': result.insert(result.end(), '\r'); break;
case '0': result.insert(result.end(), '\0'); break;
case '\0':
{
cmSystemTools::Error("Trailing backslash in argument:\n", s);
return result;
}
default:
{
std::string chStr(1, *ch);
cmSystemTools::Error("Invalid escape sequence \\", chStr.c_str(),
"\nin argument ", s);
}
}
}
else
{
result.insert(result.end(), *ch);
}
}
return result;
}
void cmSystemTools::Error(const char* m1, const char* m2,
const char* m3, const char* m4)
{
std::string message = "CMake Error: ";
if(m1)
{
message += m1;
}
if(m2)
{
message += m2;
}
if(m3)
{
message += m3;
}
if(m4)
{
message += m4;
}
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cmSystemTools::s_ErrorOccured = true;
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cmSystemTools::Message(message.c_str(),"Error");
}
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void cmSystemTools::SetErrorCallback(ErrorCallback f)
{
s_ErrorCallback = f;
}
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void cmSystemTools::Message(const char* m1, const char *title)
{
if(s_DisableMessages)
{
return;
}
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if(s_ErrorCallback)
{
(*s_ErrorCallback)(m1, title, s_DisableMessages);
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return;
}
else
{
std::cerr << m1 << std::endl;
}
}
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bool cmSystemTools::CopyFileIfDifferent(const char* source,
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const char* destination)
{
if(cmSystemTools::FilesDiffer(source, destination))
{
cmSystemTools::cmCopyFile(source, destination);
return true;
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}
return false;
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}
bool cmSystemTools::FilesDiffer(const char* source,
const char* destination)
{
struct stat statSource;
if (stat(source, &statSource) != 0)
{
return true;
}
struct stat statDestination;
if (stat(destination, &statDestination) != 0)
{
return true;
}
if(statSource.st_size != statDestination.st_size)
{
return true;
}
std::ifstream finSource(source);
std::ifstream finDestination(destination);
if(!finSource || !finDestination)
{
return true;
}
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const int buffer_length = 4096;
char bufferSource[buffer_length];
char bufferDest[buffer_length];
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while(finSource && finDestination)
{
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if(finSource.getline(bufferSource, buffer_length, '\n')
|| finSource.gcount())
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{
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if(finDestination.getline(bufferDest, buffer_length, '\n')
|| finDestination.gcount())
{
// both if statements passed
if(finSource.eof())
{
if(!finDestination.eof())
{
return true;
}
if(finSource.gcount() != finDestination.gcount())
{
return true;
}
if(strncmp(bufferSource, bufferDest, finSource.gcount()) != 0)
{
return true;
}
}
else if(finSource.fail())
{
if(!finDestination.fail())
{
return true;
}
if(strcmp(bufferSource, bufferDest) != 0)
{
return true;
}
finSource.clear(finSource.rdstate() & ~std::ios::failbit);
finDestination.clear(finDestination.rdstate() & ~std::ios::failbit);
}
else
{
if(strcmp(bufferSource, bufferDest) != 0)
{
return true;
}
}
}
else
{
return true;
}
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}
}
return false;
}
/**
* Copy a file named by "source" to the file named by "destination".
*/
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void cmSystemTools::cmCopyFile(const char* source,
const char* destination)
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{
const int bufferSize = 4096;
char buffer[bufferSize];
std::ifstream fin(source,
#ifdef _WIN32
std::ios::binary |
#endif
std::ios::in);
if(!fin)
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{
cmSystemTools::Error("CopyFile failed to open input file \"",
source, "\"");
return;
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}
std::ofstream fout(destination,
#ifdef _WIN32
std::ios::binary |
#endif
std::ios::out | std::ios::trunc);
if(!fout)
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{
cmSystemTools::Error("CopyFile failed to open output file \"",
destination, "\"");
return;
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}
// This copy loop is very sensitive on certain platforms with
// slightly broken stream libraries (like HPUX). Normally, it is
// incorrect to not check the error condition on the fin.read()
// before using the data, but the fin.gcount() will be zero if an
// error occurred. Therefore, the loop should be safe everywhere.
while(fin)
{
fin.read(buffer, bufferSize);
if(fin.gcount())
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{
fout.write(buffer, fin.gcount());
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}
}
}
// return true if the file exists
long int cmSystemTools::ModifiedTime(const char* filename)
{
struct stat fs;
if (stat(filename, &fs) != 0)
{
return 0;
}
else
{
return (long int)fs.st_mtime;
}
}
bool cmSystemTools::RemoveFile(const char* source)
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{
return unlink(source) != 0 ? false : true;
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}
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bool cmSystemTools::IsOn(const char* val)
{
if (!val)
{
return false;
}
std::basic_string<char> v = val;
for(std::basic_string<char>::iterator c = v.begin();
c != v.end(); c++)
{
*c = toupper(*c);
}
return (v == "ON" || v == "1" || v == "YES" || v == "TRUE" || v == "Y");
}
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bool cmSystemTools::IsOff(const char* val)
{
if (!val || strlen(val) == 0)
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{
return true;
}
std::basic_string<char> v = val;
for(std::basic_string<char>::iterator c = v.begin();
c != v.end(); c++)
{
*c = toupper(*c);
}
return (v == "OFF" || v == "0" || v == "NO" || v == "FALSE" ||
v == "N" || v == "NOTFOUND" || v == "IGNORE");
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}
bool cmSystemTools::RunCommand(const char* command,
std::string& output,
bool verbose)
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{
int foo;
return cmSystemTools::RunCommand(command, output, foo, verbose);
}
bool cmSystemTools::RunCommand(const char* command,
std::string& output,
int &retVal, bool verbose)
{
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const int BUFFER_SIZE = 4096;
char buffer[BUFFER_SIZE];
if(s_DisableRunCommandOutput)
{
verbose = false;
}
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#if defined(WIN32) && !defined(__CYGWIN__)
std::string commandToFile = command;
commandToFile += " > ";
std::string tempFile;
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tempFile += _tempnam(0, "cmake");
commandToFile += tempFile;
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retVal = system(commandToFile.c_str());
std::ifstream fin(tempFile.c_str());
if(!fin)
{
if(verbose)
{
std::string errormsg = "RunCommand produced no output: command: \"";
errormsg += command;
errormsg += "\"";
errormsg += "\nOutput file: ";
errormsg += tempFile;
cmSystemTools::Error(errormsg.c_str());
}
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fin.close();
cmSystemTools::RemoveFile(tempFile.c_str());
return false;
}
while(fin)
{
fin.getline(buffer, BUFFER_SIZE);
output += buffer;
}
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fin.close();
cmSystemTools::RemoveFile(tempFile.c_str());
return true;
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#else
if(verbose)
{
std::cout << "running " << command << std::endl;
}
fflush(stdout);
fflush(stderr);
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FILE* cpipe = popen(command, "r");
if(!cpipe)
{
return false;
}
fgets(buffer, BUFFER_SIZE, cpipe);
while(!feof(cpipe))
{
if(verbose)
{
std::cout << buffer << std::flush;
}
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output += buffer;
fgets(buffer, BUFFER_SIZE, cpipe);
}
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retVal = pclose(cpipe);
retVal = WEXITSTATUS(retVal);
return true;
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#endif
}
/**
* Find the file the given name. Searches the given path and then
* the system search path. Returns the full path to the file if it is
* found. Otherwise, the empty string is returned.
*/
std::string cmSystemTools::FindFile(const char* name,
const std::vector<std::string>& userPaths)
{
// Add the system search path to our path.
std::vector<std::string> path = userPaths;
cmSystemTools::GetPath(path);
std::string tryPath;
for(std::vector<std::string>::const_iterator p = path.begin();
p != path.end(); ++p)
{
tryPath = *p;
tryPath += "/";
tryPath += name;
if(cmSystemTools::FileExists(tryPath.c_str()) &&
!cmSystemTools::FileIsDirectory(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
}
// Couldn't find the file.
return "";
}
/**
* Find the executable with the given name. Searches the given path and then
* the system search path. Returns the full path to the executable if it is
* found. Otherwise, the empty string is returned.
*/
std::string cmSystemTools::FindProgram(const char* name,
const std::vector<std::string>& userPaths)
{
// See if the executable exists as written.
if(cmSystemTools::FileExists(name) &&
!cmSystemTools::FileIsDirectory(name))
{
return cmSystemTools::CollapseFullPath(name);
}
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std::string tryPath = name;
tryPath += cmSystemTools::GetExecutableExtension();
if(cmSystemTools::FileExists(tryPath.c_str()) &&
!cmSystemTools::FileIsDirectory(tryPath.c_str()))
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{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
// Add the system search path to our path.
std::vector<std::string> path = userPaths;
cmSystemTools::GetPath(path);
for(std::vector<std::string>::const_iterator p = path.begin();
p != path.end(); ++p)
{
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tryPath = *p;
tryPath += "/";
tryPath += name;
if(cmSystemTools::FileExists(tryPath.c_str()) &&
!cmSystemTools::FileIsDirectory(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
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#ifdef _WIN32
tryPath += ".com";
if(cmSystemTools::FileExists(tryPath.c_str()) &&
!cmSystemTools::FileIsDirectory(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
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tryPath = *p;
tryPath += "/";
tryPath += name;
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#endif
tryPath += cmSystemTools::GetExecutableExtension();
if(cmSystemTools::FileExists(tryPath.c_str()) &&
!cmSystemTools::FileIsDirectory(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
}
// Couldn't find the program.
return "";
}
/**
* Find the library with the given name. Searches the given path and then
* the system search path. Returns the full path to the library if it is
* found. Otherwise, the empty string is returned.
*/
std::string cmSystemTools::FindLibrary(const char* name,
const std::vector<std::string>& userPaths)
{
// See if the executable exists as written.
if(cmSystemTools::FileExists(name))
{
return cmSystemTools::CollapseFullPath(name);
}
// Add the system search path to our path.
std::vector<std::string> path = userPaths;
cmSystemTools::GetPath(path);
std::string tryPath;
for(std::vector<std::string>::const_iterator p = path.begin();
p != path.end(); ++p)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
tryPath = *p;
tryPath += "/";
tryPath += name;
tryPath += ".lib";
if(cmSystemTools::FileExists(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
#else
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tryPath = *p;
tryPath += "/lib";
tryPath += name;
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tryPath += ".so";
if(cmSystemTools::FileExists(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
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tryPath = *p;
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tryPath += "/lib";
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tryPath += name;
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tryPath += ".a";
if(cmSystemTools::FileExists(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
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tryPath = *p;
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tryPath += "/lib";
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tryPath += name;
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tryPath += ".sl";
if(cmSystemTools::FileExists(tryPath.c_str()))
{
return cmSystemTools::CollapseFullPath(tryPath.c_str());
}
#endif
}
// Couldn't find the library.
return "";
}
bool cmSystemTools::FileIsDirectory(const char* name)
{
struct stat fs;
if(stat(name, &fs) == 0)
{
#if _WIN32
return ((fs.st_mode & _S_IFDIR) != 0);
#else
return S_ISDIR(fs.st_mode);
#endif
}
else
{
return false;
}
}
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int cmSystemTools::ChangeDirectory(const char *dir)
{
return Chdir(dir);
}
std::string cmSystemTools::GetCurrentWorkingDirectory()
{
char buf[2048];
std::string path = Getcwd(buf, 2048);
return path;
}
/**
* Given the path to a program executable, get the directory part of the path with the
* file stripped off. If there is no directory part, the empty string is returned.
*/
std::string cmSystemTools::GetProgramPath(const char* in_name)
{
std::string dir, file;
cmSystemTools::SplitProgramPath(in_name, dir, file);
return dir;
}
/**
* Given the path to a program executable, get the directory part of the path
* with the file stripped off. If there is no directory part, the empty
* string is returned.
*/
void cmSystemTools::SplitProgramPath(const char* in_name,
std::string& dir,
std::string& file)
{
dir = in_name;
file = "";
cmSystemTools::ConvertToUnixSlashes(dir);
if(!cmSystemTools::FileIsDirectory(dir.c_str()))
{
std::string::size_type slashPos = dir.rfind("/");
if(slashPos != std::string::npos)
{
file = dir.substr(slashPos+1);
dir = dir.substr(0, slashPos);
}
else
{
file = dir;
dir = "";
}
}
if((dir != "") && !cmSystemTools::FileIsDirectory(dir.c_str()))
{
std::string oldDir = in_name;
cmSystemTools::ConvertToUnixSlashes(oldDir);
cmSystemTools::Error("Error splitting file name off end of path:\n",
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oldDir.c_str(), "\nDirectory not found: ",
dir.c_str());
dir = in_name;
return;
}
}
/**
* Given a path to a file or directory, convert it to a full path.
* This collapses away relative paths. The full path is returned.
*/
std::string cmSystemTools::CollapseFullPath(const char* in_name)
{
std::string dir, file;
cmSystemTools::SplitProgramPath(in_name, dir, file);
#ifdef _WIN32
// Ultra-hack warning:
// This changes to the target directory, saves the working directory,
// and then changes back to the original working directory.
std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
if(dir != "") { Chdir(dir.c_str()); }
std::string newDir = cmSystemTools::GetCurrentWorkingDirectory();
Chdir(cwd.c_str());
cmSystemTools::ConvertToUnixSlashes(newDir);
std::string newPath = newDir+"/"+file;
return newPath;
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#else
# ifdef MAXPATHLEN
char resolved_name[MAXPATHLEN];
# else
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# ifdef PATH_MAX
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char resolved_name[PATH_MAX];
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# else
char resolved_name[5024];
# endif
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# endif
if(dir != "")
{
realpath(dir.c_str(), resolved_name);
dir = resolved_name;
}
else
{
dir = cmSystemTools::GetCurrentWorkingDirectory();
}
if(file == "")
{
return dir;
}
return dir + "/" + file;
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#endif
}
/**
* Return path of a full filename (no trailing slashes).
* Warning: returned path is converted to Unix slashes format.
*/
std::string cmSystemTools::GetFilenamePath(const std::string& filename)
{
std::string fn = filename;
cmSystemTools::ConvertToUnixSlashes(fn);
std::string::size_type slash_pos = fn.rfind("/");
if(slash_pos != std::string::npos)
{
return fn.substr(0, slash_pos);
}
else
{
return "";
}
}
/**
* Return file name of a full filename (i.e. file name without path).
*/
std::string cmSystemTools::GetFilenameName(const std::string& filename)
{
std::string fn = filename;
cmSystemTools::ConvertToUnixSlashes(fn);
std::string::size_type slash_pos = fn.rfind("/");
if(slash_pos != std::string::npos)
{
return fn.substr(slash_pos + 1);
}
else
{
return filename;
}
}
/**
* Return file extension of a full filename (dot included).
* Warning: this is the longest extension (for example: .tar.gz)
*/
std::string cmSystemTools::GetFilenameExtension(const std::string& filename)
{
std::string name = cmSystemTools::GetFilenameName(filename);
std::string::size_type dot_pos = name.find(".");
if(dot_pos != std::string::npos)
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{
return name.substr(dot_pos);
}
else
{
return "";
}
}
/**
* Return file extension of a full filename (dot included).
*/
std::string cmSystemTools::GetFilenameShortestExtension(const std::string& filename)
{
std::string name = cmSystemTools::GetFilenameName(filename);
std::string::size_type dot_pos = name.rfind(".");
if(dot_pos != std::string::npos)
{
return name.substr(dot_pos);
}
else
{
return "";
}
}
/**
* Return file name without extension of a full filename (i.e. without path).
* Warning: it considers the longest extension (for example: .tar.gz)
*/
std::string cmSystemTools::GetFilenameNameWithoutExtension(const std::string& filename)
{
std::string name = cmSystemTools::GetFilenameName(filename);
std::string::size_type dot_pos = name.find(".");
if(dot_pos != std::string::npos)
{
return name.substr(0, dot_pos);
}
else
{
return name;
}
}
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void cmSystemTools::Glob(const char *directory, const char *regexp,
std::vector<std::string>& files)
{
cmDirectory d;
cmRegularExpression reg(regexp);
if (d.Load(directory))
{
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unsigned int i, numf;
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numf = d.GetNumberOfFiles();
for (i = 0; i < numf; i++)
{
std::string fname = d.GetFile(i);
if (reg.find(fname))
{
files.push_back(fname);
}
}
}
}
void cmSystemTools::GlobDirs(const char *fullPath,
std::vector<std::string>& files)
{
std::string path = fullPath;
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std::string::size_type pos = path.find("/*");
if(pos == std::string::npos)
{
files.push_back(fullPath);
return;
}
std::string startPath = path.substr(0, pos);
std::string finishPath = path.substr(pos+2);
cmDirectory d;
if (d.Load(startPath.c_str()))
{
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for (unsigned int i = 0; i < d.GetNumberOfFiles(); ++i)
{
if((std::string(d.GetFile(i)) != ".")
&& (std::string(d.GetFile(i)) != ".."))
{
std::string fname = startPath;
fname +="/";
fname += d.GetFile(i);
if(cmSystemTools::FileIsDirectory(fname.c_str()))
{
fname += finishPath;
cmSystemTools::GlobDirs(fname.c_str(), files);
}
}
}
}
}
void cmSystemTools::ExpandListArguments(std::vector<std::string> const& arguments,
std::vector<std::string>& newargs)
{
std::vector<std::string>::const_iterator i;
for(i = arguments.begin();i != arguments.end(); ++i)
{
if(i->find(';') != std::string::npos)
{
std::string::size_type start = 0;
std::string::size_type endpos = 0;
while(endpos != std::string::npos)
{
endpos = i->find(';', start);
std::string::size_type len;
if(endpos != std::string::npos)
{
len = endpos - start;
}
else
{
len = i->size()-start;
}
newargs.push_back(i->substr(start, len));
start = endpos+1;
}
}
else
{
newargs.push_back(*i);
}
}
}