在 Fortran 中循环部分编号的文件
Loop over partially numbered files in Fortran
我想遍历目录 ./dir1/ 中的文件名。此目录中的文件部分遵循编号模式，例如
- data001_abjdfsd.dat
- data002_dchuwe.dat
- data003_jnvkfi.dat
等等。前 8 个字符遵循编号模式，格式均为“.dat”，字符串的其余部分是任意的。请注意，文件名中的字符串长度不是固定的。我可能可以使用通配符在 shell 脚本中轻松完成。我如何在 Fortran 90 中循环遍历这些文件？
这是一个完全独立于平台（但不是白痴！）的问题解决方案（应该在 Linux/Windows/Mac 中工作）。请注意，您将需要 Fortran 2008 编译器。以下模块中的函数 getFileList(searchText,order,excludeText) 将为您提供当前目录（或 searchText 中给出的目录）中的文件列表。请注意，searchText 将被传递到命令行环境以搜索文件。因此，通配符可用于文件搜索。其他两个参数是可选的：order 确定文件应该以什么顺序列出。此函数仅支持两个命令：name 和 date。第三个参数 excludeText 是您不希望该函数列出的任何文件中存在的文本。在输出中，函数 returns 类型为 dynamicString 的结构包含所有请求文件的列表，按请求顺序排列，每个文件可能具有不同的名称长度。我在这个回复的底部附上了一个测试文件。
module ModFileList
implicit none
integer, parameter, private :: maxFileRecordLength = 2047
type DynamicString
character (len=:), allocatable :: record
end type DynamicString
contains
!*********************************************************************
!*********************************************************************
function getFileList(searchText,order,excludeText)
implicit none
character(len=*) , intent(in) :: searchText
character(len=*) , intent(in), optional :: order
character(len=*) , intent(in), optional :: excludeText
type(DynamicString), allocatable :: getFileList(:)
character(len=:) , allocatable :: command,filename,orderLowerCase
character(len=maxFileRecordLength) :: record
integer :: iunit,counter,iostat,nRecord,nskip
character(8) :: date
character(10) :: time
logical :: exist
if (present(order)) then
orderLowerCase = getLowerCase(order)
else
orderLowerCase = 'name'
end if
if (getSlash()=='\') then ! it's Windows cmd
if (orderLowerCase=='name') then ! ascending in name
command = 'dir /b /a-d ' // searchText
elseif (orderLowerCase=='date') then ! oldest will be first
command = 'dir /b /a-d /o:d ' // searchText
else
write(*,*) ' FATAL: In Misc@getFileList()'
write(*,*) ' The requested file order is not supported.'
write(*,*) ' order = ', orderLowerCase
write(*,*) 'Program aborted.'
end if
if (present(excludeText)) then
command = command // " | findstr /v /i " // trim(adjustl(excludeText))
end if
else
if (orderLowerCase=='name') then ! ascending in name
command = 'ls -1 ' // searchText
elseif (orderLowerCase=='date') then ! oldest will be first
command = 'ls -tr ' // searchText
else
write(*,*) ' FATAL: In Misc@getFileList()'
write(*,*) ' The requested file order is not supported.'
write(*,*) ' order = ', orderLowerCase
write(*,*) 'Program aborted.'
end if
if (present(excludeText)) then
command = command // " --ignore=" // trim(adjustl(excludeText))
end if
end if
! generate a brand new, non-existing filename
counter = 0
do
counter = counter + 1
call date_and_time(date,time)
filename = date // '_' // time // '_' // 'getFileList_' // int2str(counter) // '.temp'
inquire(file=filename,exist=exist) ! check if the file already exists
if (exist) cycle
exit
end do
call execute_command_line(command//' > '//filename)
nRecord = getNumRecordInFile(filename)
! check filename is not among records
nskip = 0
open(newunit=iunit,file=filename,status='old')
do counter = 1,nRecord
read(iunit,'(A)',iostat=iostat) record
if(iostat==0) then
if(filename==trim(adjustl(record))) nskip = nskip + 1
else
write(*,*) ' FATAL (1): In Misc@getFileList()'
write(*,*) ' Error occurred while reading file.'
write(*,*) 'Program aborted.'
stop
end if
end do
close(iunit)
allocate(getFileList(nRecord-nskip))
open(newunit=iunit,file=filename,status='old')
do counter = 1,nRecord
read(iunit,'(A)',iostat=iostat) record
if(iostat==0) then
if (filename/=trim(adjustl(record))) getFileList(counter)%record = trim(adjustl(record))
else
write(*,*) ' FATAL (2): In Misc@getFileList()'
write(*,*) ' Error occurred while reading file.'
write(*,*) 'Program aborted.'
stop
end if
end do
close(iunit)
if (getSlash()=='\') then ! it's Windows cmd
command = 'del '//filename
else
command = 'rm '//filename
end if
call execute_command_line(command)
end function getFileList
!*********************************************************************
!*********************************************************************
pure function getLowerCase(string)
implicit None
character(*), intent(in) :: string
character(len(string)) :: getLowerCase
character(26), parameter :: lowerCase = 'abcdefghijklmnopqrstuvwxyz', upperCase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
integer :: ic, i
! capitalize each letter if it is lowercase
getLowerCase = string
do i = 1, len(string)
ic = INDEX(upperCase, string(i:i))
if (ic > 0) getLowerCase(i:i) = lowerCase(ic:ic)
end do
end function getLowerCase
!*********************************************************************
!*********************************************************************
function getNumRecordInFile(filename)
implicit none
character(len=*), intent(in) :: filename
character(len=8) :: record
integer :: getNumRecordInFile,iunit,iostat
open(newunit=iunit,file=filename,status='old')
getNumRecordInFile = 0
do
read(iunit,'(A)',iostat=iostat) record
if(iostat==0) then
getNumRecordInFile = getNumRecordInFile + 1
cycle
elseif(iostat<0) then
exit
else
write(*,*) 'FATAL error occurred reading file in Misc in getNumRecordInFile().'
write(*,*) 'Program aborted.'
stop
end if
end do
close(iunit)
end function getNumRecordInFile
!*********************************************************************
!*********************************************************************
character(len=1) function getSlash()
implicit none
character(len=7) :: os
call get_environment_variable('OS',os)
if (os=='Windows') then
getSlash = '\'
else
getSlash = '/'
end if
end function getSlash
!*********************************************************************
!*********************************************************************
pure function int2str(integerIn,formatIn)
implicit none
integer , intent(in) :: integerIn
character(*), intent(in), optional :: formatIn
character(:), allocatable :: int2str
integer :: i,length
character(len=63) :: thisFormat
if (present(formatIn)) then
write(thisFormat,formatIn) integerIn
int2str = trim(adjustl(thisFormat))
else
do i=1,63
if(abs(integerIn)<10**i) then
length = i
if (integerIn<0) length = length + 1
exit
end if
end do
allocate(character(length) :: int2str)
write(thisFormat,'(1I63)') length
thisFormat = '(1I' // trim(adjustl(thisFormat)) // ')'
write(int2str,thisFormat) integerIn
end if
end function int2str
!*********************************************************************
!*********************************************************************
end module ModFileList
这是上述模块的测试文件：
include 'mod_FileList'
program main
use ModFileList, only: getFileList, dynamicString, int2str
implicit none
type(dynamicString), allocatable :: FileList(:), SystemInfo(:)
character(63) :: record
character(len=127) :: searchString
character(len=:), allocatable :: dir,fileName,fileBase,FileExt,test
logical :: exist
integer :: i
real*16 :: dummy
searchString = '*.f90'
FileList = getFileList(searchString)
if (size(FileList)==0) then
write(*,*) 'no file detected'
else
write(*,*) int2str(size(FileList)), " files detected containing ", trim(adjustl(searchString)), " :"
do i = 1,size(FileList)
write(*,*) FileList(i)%record
end do
end if
end program main
如果您编译此测试文件并 运行 它，输出应类似于以下内容：
2 files detected containing *.f90 :
main.f90
mod_FileList.f90
我想遍历目录 ./dir1/ 中的文件名。此目录中的文件部分遵循编号模式，例如
- data001_abjdfsd.dat
- data002_dchuwe.dat
- data003_jnvkfi.dat
等等。前 8 个字符遵循编号模式，格式均为“.dat”，字符串的其余部分是任意的。请注意，文件名中的字符串长度不是固定的。我可能可以使用通配符在 shell 脚本中轻松完成。我如何在 Fortran 90 中循环遍历这些文件？
这是一个完全独立于平台（但不是白痴！）的问题解决方案（应该在 Linux/Windows/Mac 中工作）。请注意，您将需要 Fortran 2008 编译器。以下模块中的函数 getFileList(searchText,order,excludeText) 将为您提供当前目录（或 searchText 中给出的目录）中的文件列表。请注意，searchText 将被传递到命令行环境以搜索文件。因此，通配符可用于文件搜索。其他两个参数是可选的：order 确定文件应该以什么顺序列出。此函数仅支持两个命令：name 和 date。第三个参数 excludeText 是您不希望该函数列出的任何文件中存在的文本。在输出中，函数 returns 类型为 dynamicString 的结构包含所有请求文件的列表，按请求顺序排列，每个文件可能具有不同的名称长度。我在这个回复的底部附上了一个测试文件。
module ModFileList
implicit none
integer, parameter, private :: maxFileRecordLength = 2047
type DynamicString
character (len=:), allocatable :: record
end type DynamicString
contains
!*********************************************************************
!*********************************************************************
function getFileList(searchText,order,excludeText)
implicit none
character(len=*) , intent(in) :: searchText
character(len=*) , intent(in), optional :: order
character(len=*) , intent(in), optional :: excludeText
type(DynamicString), allocatable :: getFileList(:)
character(len=:) , allocatable :: command,filename,orderLowerCase
character(len=maxFileRecordLength) :: record
integer :: iunit,counter,iostat,nRecord,nskip
character(8) :: date
character(10) :: time
logical :: exist
if (present(order)) then
orderLowerCase = getLowerCase(order)
else
orderLowerCase = 'name'
end if
if (getSlash()=='\') then ! it's Windows cmd
if (orderLowerCase=='name') then ! ascending in name
command = 'dir /b /a-d ' // searchText
elseif (orderLowerCase=='date') then ! oldest will be first
command = 'dir /b /a-d /o:d ' // searchText
else
write(*,*) ' FATAL: In Misc@getFileList()'
write(*,*) ' The requested file order is not supported.'
write(*,*) ' order = ', orderLowerCase
write(*,*) 'Program aborted.'
end if
if (present(excludeText)) then
command = command // " | findstr /v /i " // trim(adjustl(excludeText))
end if
else
if (orderLowerCase=='name') then ! ascending in name
command = 'ls -1 ' // searchText
elseif (orderLowerCase=='date') then ! oldest will be first
command = 'ls -tr ' // searchText
else
write(*,*) ' FATAL: In Misc@getFileList()'
write(*,*) ' The requested file order is not supported.'
write(*,*) ' order = ', orderLowerCase
write(*,*) 'Program aborted.'
end if
if (present(excludeText)) then
command = command // " --ignore=" // trim(adjustl(excludeText))
end if
end if
! generate a brand new, non-existing filename
counter = 0
do
counter = counter + 1
call date_and_time(date,time)
filename = date // '_' // time // '_' // 'getFileList_' // int2str(counter) // '.temp'
inquire(file=filename,exist=exist) ! check if the file already exists
if (exist) cycle
exit
end do
call execute_command_line(command//' > '//filename)
nRecord = getNumRecordInFile(filename)
! check filename is not among records
nskip = 0
open(newunit=iunit,file=filename,status='old')
do counter = 1,nRecord
read(iunit,'(A)',iostat=iostat) record
if(iostat==0) then
if(filename==trim(adjustl(record))) nskip = nskip + 1
else
write(*,*) ' FATAL (1): In Misc@getFileList()'
write(*,*) ' Error occurred while reading file.'
write(*,*) 'Program aborted.'
stop
end if
end do
close(iunit)
allocate(getFileList(nRecord-nskip))
open(newunit=iunit,file=filename,status='old')
do counter = 1,nRecord
read(iunit,'(A)',iostat=iostat) record
if(iostat==0) then
if (filename/=trim(adjustl(record))) getFileList(counter)%record = trim(adjustl(record))
else
write(*,*) ' FATAL (2): In Misc@getFileList()'
write(*,*) ' Error occurred while reading file.'
write(*,*) 'Program aborted.'
stop
end if
end do
close(iunit)
if (getSlash()=='\') then ! it's Windows cmd
command = 'del '//filename
else
command = 'rm '//filename
end if
call execute_command_line(command)
end function getFileList
!*********************************************************************
!*********************************************************************
pure function getLowerCase(string)
implicit None
character(*), intent(in) :: string
character(len(string)) :: getLowerCase
character(26), parameter :: lowerCase = 'abcdefghijklmnopqrstuvwxyz', upperCase = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
integer :: ic, i
! capitalize each letter if it is lowercase
getLowerCase = string
do i = 1, len(string)
ic = INDEX(upperCase, string(i:i))
if (ic > 0) getLowerCase(i:i) = lowerCase(ic:ic)
end do
end function getLowerCase
!*********************************************************************
!*********************************************************************
function getNumRecordInFile(filename)
implicit none
character(len=*), intent(in) :: filename
character(len=8) :: record
integer :: getNumRecordInFile,iunit,iostat
open(newunit=iunit,file=filename,status='old')
getNumRecordInFile = 0
do
read(iunit,'(A)',iostat=iostat) record
if(iostat==0) then
getNumRecordInFile = getNumRecordInFile + 1
cycle
elseif(iostat<0) then
exit
else
write(*,*) 'FATAL error occurred reading file in Misc in getNumRecordInFile().'
write(*,*) 'Program aborted.'
stop
end if
end do
close(iunit)
end function getNumRecordInFile
!*********************************************************************
!*********************************************************************
character(len=1) function getSlash()
implicit none
character(len=7) :: os
call get_environment_variable('OS',os)
if (os=='Windows') then
getSlash = '\'
else
getSlash = '/'
end if
end function getSlash
!*********************************************************************
!*********************************************************************
pure function int2str(integerIn,formatIn)
implicit none
integer , intent(in) :: integerIn
character(*), intent(in), optional :: formatIn
character(:), allocatable :: int2str
integer :: i,length
character(len=63) :: thisFormat
if (present(formatIn)) then
write(thisFormat,formatIn) integerIn
int2str = trim(adjustl(thisFormat))
else
do i=1,63
if(abs(integerIn)<10**i) then
length = i
if (integerIn<0) length = length + 1
exit
end if
end do
allocate(character(length) :: int2str)
write(thisFormat,'(1I63)') length
thisFormat = '(1I' // trim(adjustl(thisFormat)) // ')'
write(int2str,thisFormat) integerIn
end if
end function int2str
!*********************************************************************
!*********************************************************************
end module ModFileList
这是上述模块的测试文件：
include 'mod_FileList'
program main
use ModFileList, only: getFileList, dynamicString, int2str
implicit none
type(dynamicString), allocatable :: FileList(:), SystemInfo(:)
character(63) :: record
character(len=127) :: searchString
character(len=:), allocatable :: dir,fileName,fileBase,FileExt,test
logical :: exist
integer :: i
real*16 :: dummy
searchString = '*.f90'
FileList = getFileList(searchString)
if (size(FileList)==0) then
write(*,*) 'no file detected'
else
write(*,*) int2str(size(FileList)), " files detected containing ", trim(adjustl(searchString)), " :"
do i = 1,size(FileList)
write(*,*) FileList(i)%record
end do
end if
end program main
如果您编译此测试文件并 运行 它，输出应类似于以下内容：
2 files detected containing *.f90 :
main.f90
mod_FileList.f90