TABLE OF CONTENTS

::pwtk::xsf::getPrimVecUnit

SYNOPSIS

proc ::pwtk::xsf::getPrimVecUnit {xsfFile} {

USAGE

   ::pwtk::xsf::getPrimVecUnit xsfFile

PURPOSE

Return the unit in which the primitive vectors are specified in the XSF file. Beware that XSF supports only "angstroms" units, but XSF2 (i.e. XSF version-2) supports also other units.

SOURCE

    ::pwtk::fileMustExist $xsfFile XSF
    
    set xsfList [split [::pwtk::skipEmptyLines [::pwtk::readFile $xsfFile]] \n]
    set ind     [lsearch $xsfList *PRIMVEC*]

    if { $ind > -1 } {
        return [::pwtk::xsf::getUnit_ [lindex $xsfList $ind]]
    } else {
        ::pwtk::error "$xsfFile is not an XSF file" 1
    }
    return ""
}