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POUsing appropriate data types (path, string, etc.) with boost::filesystem in C++ to efficiently iterate files, change filenames, and do file operations
 

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  1. POUsing appropriate data types (path, string, etc.) with boost::filesystem in C++ to efficiently iterate files, change filenames, and do file operations
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    <p>The following code loops through files in "sourcepath" and copies them to "destpath". If they exist, they are renamed as "Copy of" the original filename.</p> <p>Do I really need this much code for this? I get the feeling I'm doing way too much back-and-forth converting between strings and paths, but I'm not sure how else to do it.</p> <p>Is there a less complicated and more efficient way to do this, or is this as good as it gets?</p> <p>System: Win32(XP), Boost libraries: 1.44 v2, Dev env: Visual Studio TS 2008</p> <pre><code>namespace bfs = boost::filesystem; bfs::path pathSource("C:/dir/sourcepath"); bfs::path pathDest("C:/dir/destpath"); for (bfs::directory_iterator iterDir(pathSource); iterDir!=bfs::directory_iterator(); iterDir++) { std::string strSourceFilename(pathSource.string() + "/" + iterDir-&gt;filename()); std::string strDestFilename(pathDest.string() + "/" + iterDir-&gt;filename()); bfs::path pathSourceFilename(strSourceFilename); bfs::path pathDestFilename(strDestFilename); if(!bfs::exists(pathDestFilename)) bfs::copy_file(pathSourceFilename, pathDestFilename); else { std::string strNewDestFilename(pathDest.string() + "/" + "Copy of " + iterDir-&gt;filename()); bfs::path pathNewDestFilename(strNewDestFilename); bfs::copy_file(pathSourceFilename, pathNewDestFilename); } } </code></pre> <p><strong>ETA: Moved "Copy of" to the right place (next to the filename rather than the dir name).</strong></p> <p><strong>ETA2: Refactored using suggested edits:</strong></p> <pre><code>namespace bfs = boost::filesystem; bfs::path pathSource("C:/dir/sourcepath"); bfs::path pathDest("C:/dir/destpath"); for (bfs::directory_iterator iterDir(pathSource); iterDir!=bfs::directory_iterator(); iterDir++) { bfs::path pathSourceFilename(pathSource / iterDir-&gt;filename()); bfs::path pathDestFilename(pathDest / iterDir-&gt;filename()); if(!bfs::exists(pathDestFilename)) bfs::copy_file(pathSourceFilename, pathDestFilename); else { std::string strNewDestFilename("Copy of " + iterDir-&gt;filename()); bfs::path pathNewDestFilename(pathDest / strNewDestFilename); bfs::copy_file(pathSourceFilename, pathNewDestFilename); } } </code></pre>
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