CMake/Source/cmSystemTools.cxx

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#include "cmSystemTools.h"
#include "errno.h"
#include <sys/stat.h>
#include "cmRegularExpression.h"
#if defined(_MSC_VER) || defined(__BORLANDC__)
#include <windows.h>
#include <direct.h>
inline int Mkdir(const char* dir)
{
return _mkdir(dir);
}
#else
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
inline int Mkdir(const char* dir)
{
return mkdir(dir, 00700);
}
#endif
bool cmSystemTools::MakeDirectory(const char* path)
{
std::string dir = path;
// replace all of the \ with /
size_t pos = 0;
while((pos = dir.find('\\', pos)) != std::string::npos)
{
dir[pos] = '/';
pos++;
}
pos = dir.find(':');
if(pos == std::string::npos)
{
pos = 0;
}
while((pos = dir.find('/', pos)) != std::string::npos)
{
std::string topdir = dir.substr(0, pos);
Mkdir(topdir.c_str());
pos++;
}
if(Mkdir(path) != 0)
{
// if it is some other error besides directory exists
// then return false
if(errno != EEXIST)
{
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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int lengthReplace = strlen(replace);
std::string rest;
size_t 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 );
}
}
// 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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}
}
// convert windows slashes to unix slashes \ with /
void cmSystemTools::ConvertToUnixSlashes(std::string& path)
{
std::string::size_type pos = path.find('\\');
while(pos != std::string::npos)
{
path[pos] = '/';
pos = path.find('\\');
}
// remove any trailing slash
if(path[path.size()-1] == '/')
{
path = path.substr(0, path.size()-1);
}
}
int cmSystemTools::Grep(const char* dir, const char* file, const char* expression)
{
std::string path = dir;
path += "/";
path += file;
std::ifstream fin(path.c_str());
char buffer[2056];
int count = 0;
cmRegularExpression reg(expression);
while(fin)
{
fin.getline(buffer, sizeof(buffer));
count += reg.find(buffer);
}
return count;
}
void cmSystemTools::ConvertCygwinPath(std::string& pathname)
{
if(pathname.find("/cygdrive/") != std::string::npos)
{
std::string cygStuff = pathname.substr(0, 11);
std::string replace;
replace += cygStuff.at(10);
replace += ":";
cmSystemTools::ReplaceString(pathname, cygStuff.c_str(), replace.c_str());
}
}
bool cmSystemTools::ParseFunction(std::ifstream& fin,
std::string& name,
std::vector<std::string>& arguments)
{
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("^$");
cmRegularExpression comment("^#.*");
cmRegularExpression oneLiner("[ \t]*([A-Za-z_0-9]*).*\\((.*)\\)");
cmRegularExpression multiLine("[ \t]*([A-Za-z_0-9]*).*\\((.*)");
cmRegularExpression lastLine("(.*)\\)");
// BEGIN VERBATIM JUNK SHOULD BE REMOVED
cmRegularExpression verbatim("BEGIN MAKE VERBATIM");
if(verbatim.find(inbuffer))
{
cmRegularExpression endVerbatim("END MAKE VERBATIM");
name = "VERBATIM";
bool done = false;
while(!done)
{
if(fin.getline(inbuffer, BUFFER_SIZE))
{
if(endVerbatim.find(inbuffer))
{
done = true;
}
else
{
arguments.push_back(inbuffer);
}
}
else
{
done = true;
}
}
return true;
}
// END VERBATIM JUNK SHOULD BE REMOVED
// check for black line or comment
if(blankLine.find(inbuffer) || comment.find(inbuffer))
{
return false;
}
// look for a oneline fun(arg arg2)
else if(oneLiner.find(inbuffer))
{
// the arguments are the second match
std::string args = oneLiner.match(2);
name = oneLiner.match(1);
// break up the arguments
cmSystemTools::GetArguments(args, arguments);
return true;
}
// look for a start of a multiline with no trailing ")" fun(arg arg2
else if(multiLine.find(inbuffer))
{
name = multiLine.match(1);
std::string args = multiLine.match(2);
cmSystemTools::GetArguments(args, arguments);
// Read lines until the closing paren is hit
bool done = false;
while(!done)
{
// read lines until the end paren is found
if(fin.getline(inbuffer, BUFFER_SIZE ) )
{
if(lastLine.find(inbuffer))
{
done = true;
std::string args = lastLine.match(1);
cmSystemTools::GetArguments(args, arguments);
}
else
{
std::string line = inbuffer;
cmSystemTools::GetArguments(line, arguments);
}
}
}
return true;
}
else
{
cmSystemTools::Error("Parse error in read function ", inbuffer);
return false;
}
}
return false;
}
void cmSystemTools::GetArguments(std::string& line,
std::vector<std::string>& arguments)
{
cmRegularExpression argument("[\t ]*([-/\\\\{}\\$A-Za-z_0-9]+)[\t ]*");
cmRegularExpression argumentWithSpaces("[\t ]*\"([- /\\\\{}\\$A-Za-z_0-9]+)\"[\t ]*");
std::string arg(" ");
while(arg.length() )
{
arg = "";
long endpos;
if (argumentWithSpaces.find(line.c_str()))
{
arg = argumentWithSpaces.match(1);
endpos = argumentWithSpaces.end(1);
}
else if(argument.find(line.c_str()))
{
arg = argument.match(1);
endpos = argument.end(1);
}
if(arg.length())
{
arguments.push_back(arg);
line = line.substr(endpos, line.length() - endpos);
}
}
}
void cmSystemTools::Error(const char* m1, const char* m2)
{
std::string message = "CMake Error: ";
if(m1)
{
message += m1;
}
if(m2)
{
message += m2;
}
#ifdef _WIN32
// MessageBox(0, message.c_str(), 0, MB_OK);
std::cerr << message.c_str() << std::endl;
#else
std::cerr << message.c_str() << std::endl;
#endif
}