Manual Reference Pages - upper_quoted (3m_strings)

NAME

upper_quoted(3f) - [M_strings:CASE] elemental function converts string to uppercase skipping strings quoted per Fortran syntax rules (LICENSE:PD)

Synopsis
Description
Options
Returns
Examples
See Also
Author
License

SYNOPSIS

elemental pure function upper_quoted(str) result (string)
    character(*), intent(in)    :: str
    character(len(str))         :: string  ! output string

DESCRIPTION

upper_quoted(string) returns a copy of the input string with all not-quoted characters converted to uppercase, assuming ASCII character sets are being used. The quoting rules are the same as for Fortran source. Either a single or double quote starts a quoted string, and a quote character of the same type is doubled when it appears internally in the quoted string. If a double quote quotes the string single quotes may appear in the quoted string as single characters, and vice-versa for single quotes.

OPTIONS

str string to convert to uppercase

RETURNS

upper copy of the input string with all unquoted characters converted to uppercase

EXAMPLES

Sample program:

    program demo_upper_quoted
    use M_strings, only: upper_quoted
    implicit none
    character(len=:),allocatable  :: s
    s=’ ABCDEFG abcdefg "Double-Quoted" ’’Single-Quoted’’ "with ""&
       & Quote" everything else’
       write(*,*) ’mixed-case input string is ....’,s
       write(*,*) ’upper-case output string is ...’,upper_quoted(s)
       write(*,’(1x,a,*(a:,"+"))’) ’upper_quoted(3f) is elemental ==>’, &
       & upper_quoted(["abc","def","ghi"])
    end program demo_upper_quoted

Expected output:

mixed-case input string is .... ABCDEFG abcdefg "Double-Quoted" ... ... ’Single-Quoted’ "with "" Quote" everything else upper-case output string is ... ABCDEFG ABCDEFG "Double-Quoted" ... ... ’Single-Quoted’ "with "" Quote" EVERYTHING ELSE upper_quoted(3f) is elemental ==>ABC+DEF+GHI

AUTHOR

John S. Urban

LICENSE

Public Domain

Nemo Release 3.1

upper_quoted (3m_strings)

January 10, 2025

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