b64_encode_string Subroutine

  1. befor64.F90
  2. befor64
  3. b64_encode_string

private pure subroutine b64_encode_string(s, code)

Arguments

TypeIntentOptionalAttributesName
character, intent(in) :: s
character(len=:), intent(out), allocatable:: code

Calls

proc~~b64_encode_string~2~~CallsGraph proc~b64_encode_string~2 b64_encode_string interface~byte_size byte_size proc~b64_encode_string~2->interface~byte_size proc~encode_bits~2 encode_bits proc~b64_encode_string~2->proc~encode_bits~2 proc~byte_size_i1p byte_size_I1P interface~byte_size->proc~byte_size_i1p proc~byte_size_r4p byte_size_R4P interface~byte_size->proc~byte_size_r4p proc~byte_size_i4p byte_size_I4P interface~byte_size->proc~byte_size_i4p proc~byte_size_i8p byte_size_I8P interface~byte_size->proc~byte_size_i8p proc~byte_size_r8p byte_size_R8P interface~byte_size->proc~byte_size_r8p proc~byte_size_i2p byte_size_I2P interface~byte_size->proc~byte_size_i2p proc~byte_size_chr byte_size_chr interface~byte_size->proc~byte_size_chr

Called by

proc~~b64_encode_string~2~~CalledByGraph proc~b64_encode_string~2 b64_encode_string proc~b64_encode_up~2 b64_encode_up proc~b64_encode_up~2->proc~b64_encode_string~2 interface~b64_encode~2 b64_encode interface~b64_encode~2->proc~b64_encode_string~2

Contents

Source Code

b64_encode_string

Source Code

   pure subroutine b64_encode_string(s, code)
   !< Encode scalar string to base64.
   !<
   !<```fortran
   !< use befor64
   !< use penf
   !< character(len=:), allocatable :: code64
   !< call b64_encode(s='hello', code=code64)
   !< print "(A)", code64
   !<```
   !=> aGVsbG8= <<<
   character(*),                  intent(in)  :: s       !< String to be encoded.
   character(len=:), allocatable, intent(out) :: code    !< Encoded scalar.
   integer(I1P),     allocatable              :: nI1P(:) !< One byte integer array containing n.
   integer(I4P)                               :: padd    !< Number of padding characters ('=').
   integer(I4P)                               :: BYCHS   !< Bytes of character string.

   BYCHS = byte_size(s)
   allocate(nI1P(1:((BYCHS+2)/3)*3)) ; nI1P = 0_I1P
   code = repeat(' ',((BYCHS+2)/3)*4)
   nI1P = transfer(s,nI1P)
   padd = mod((BYCHS),3_I4P) ; if (padd>0_I4P) padd = 3_I4P - padd
   call encode_bits(bits=nI1P,padd=padd,code=code)
   endsubroutine b64_encode_string