lar_content::LArFileHelper Class Reference

LArFileHelper class. More...

#include <LArFileHelper.h>

Static Public Member Functions
static std::string	FindFileInPath (const std::string &unqualifiedFileName, const std::string &environmentVariable, const std::string &delimiter=":")
	Find the fully-qualified file name by searching through a list of delimiter-separated paths in a named environment variable. The fully-qualified file name will be provided for the first instance of the file name encountered. More...

Detailed Description

LArFileHelper class.

Definition at line 19 of file LArFileHelper.h.

Member Function Documentation

std::string lar_content::LArFileHelper::FindFileInPath ( const std::string &  unqualifiedFileName, const std::string &  environmentVariable, const std::string &  delimiter = ":"  )

static

Find the fully-qualified file name by searching through a list of delimiter-separated paths in a named environment variable. The fully-qualified file name will be provided for the first instance of the file name encountered.

Parameters

unqualifiedFileName	the unqualified file name
environmentVariable	the name of the environment variable specifying a list of delimiter-separated paths
delimiter	the specified delimiter

Returns

the fully-qualified name if found, else a StatusCode exception will be raised

Definition at line 21 of file LArFileHelper.cc.

{
    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);
}

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The documentation for this class was generated from the following files:

• LArFileHelper.h
• LArFileHelper.cc