Add Build file

[libs/core.git] / source / utils.cpp

diff --git a/source/utils.cpp b/source/utils.cpp
index 08ab9586a31700ed9a1399b35187caba5472f37c..45cd614b150ccaaea463f3c9860dabbe3bc82e1d 100644 (file)
--- a/source/utils.cpp
+++ b/source/utils.cpp
@@ -55,6 +55,14 @@ Path fix_case(const Path &path)
        return result;
 }
 
+/**
+Creates the given directory and any parent directories if needed.
+
+@param   path  The path to create
+@param   mode  Access mode for new directories
+
+@return  0 on success, -1 on error
+*/
 int mkpath(const Path &path, int mode)
 {
        Path p;
@@ -158,5 +166,33 @@ int fnmatch(const string &pat, const Path &fn)
 #endif
 }
 
+Path relative(const Path &path, const Path &base)
+{
+       Path::iterator i=path.begin();
+       Path::iterator j=base.begin();
+       for(; (i!=path.end() && j!=base.end() && *i==*j); ++i,++j);
+
+       Path result;
+       for(; j!=base.end(); ++j)
+               result/="..";
+       for(; i!=path.end(); ++i)
+               result/=*i;
+
+       return result;
+}
+
+/**
+Extracts the basename from the given path.  Same thing as Path::Path(p)[-1],
+but faster.
+*/
+string basename(const std::string &p)
+{
+       unsigned slash=p.rfind(DIRCHAR);
+       if(slash==string::npos)
+               return p;
+       else
+               return p.substr(slash+1);
+}
+
 } // namespace Path
 } // namespace Msp