1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
!
! Copyright (C) 2013 Quantum ESPRESSO group
! This file is distributed under the terms of the
! GNU General Public License. See the file `License'
! in the root directory of the present distribution,
! or http://www.gnu.org/copyleft/gpl.txt .
!
LOGICAL FUNCTION test_input_xml (myunit)
!
! check if file opened as unit "myunit" is a xml file or not
!
IMPLICIT NONE
!
INTEGER, INTENT(in) :: myunit
!
CHARACTER(LEN=256) :: dummy
CHARACTER(LEN=1), EXTERNAL :: capital
INTEGER :: i, j
LOGICAL :: exst
!
test_input_xml = .false.
INQUIRE ( UNIT=myunit, EXIST=exst )
IF ( .NOT. exst ) GO TO 10
! read until a non-empty line is found
dummy = ' '
DO WHILE ( LEN_TRIM(dummy) < 1 )
READ ( myunit,'(A)', ERR=10, END=10) dummy
END DO
! remove blanks from line, convert to capital, clean trailing characters
j=1
DO i=1, LEN_TRIM(dummy)
IF ( dummy(i:i) /= ' ' ) THEN
dummy(j:j) = capital(dummy(i:i))
j=j+1
END IF
END DO
DO i=j, LEN_TRIM(dummy)
dummy(i:i) = ' '
END DO
! check for string "<?xml" or "<xml" in the beginning, ">" at the end
j = LEN_TRIM (dummy)
test_input_xml = ( (dummy(1:5) == "<?XML") .OR. (dummy(1:4) == "<XML") ) &
.AND. (dummy(j:j) == ">")
RETURN
10 WRITE (0,"('from test_input_xml: input file not opened or empty')")
END FUNCTION test_input_xml
|
