LArFileHelper.cc

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#include "Helpers/XmlHelper.h"
 
#include "larpandoracontent/LArHelpers/LArFileHelper.h"
 
#include <cstdlib>
#include <sys/stat.h>
 
using namespace pandora;
 
namespace lar_content
{
 
std::string LArFileHelper::FindFileInPath(const std::string &unqualifiedFileName, const std::string &environmentVariable, const std::string &delimiter)
{
    StringVector filePaths;
    const char *const pFilePathList(std::getenv(environmentVariable.c_str()));
 
    if (pFilePathList)
        XmlHelper::TokenizeString(pFilePathList, filePaths, delimiter);
 
    // Always test unqualified file name too
    filePaths.push_back("");
 
    for (const std::string &filePath : filePaths)
    {
        const std::string qualifiedFileNameAttempt(filePath + "/" + unqualifiedFileName);
        struct stat fileInfo;
 
        if (0 == stat(qualifiedFileNameAttempt.c_str(), &fileInfo))
            return qualifiedFileNameAttempt;
    }
 
    std::cout << "Unable to find file  " << unqualifiedFileName << " in any path specified by environment variable " << environmentVariable
              << ", delimiter " << delimiter << std::endl;
    throw StatusCodeException(STATUS_CODE_NOT_FOUND);
}
 
} // namespace lar_content