-
-
61.56 KB, 下载次数: 10
program jack01
implicit none
character(len = 66) buffer
integer :: num = 0
real(kind = 4) :: a, b
integer :: status = 0
integer countera,counterb
integer, parameter :: lines = 19
integer :: r = 1
logical alive
inquire(file = 'new.txt',exist = alive)
if(alive)then
!打开输入输出文件
open(unit = 12, file = 'new.txt')
open(unit = 13, file = 't.bin', access = 'direct', form = 'unformatted', recl = 20 )
do while(.true.)
!转存前面19行的内容
do countera = 1, lines, 1
read(14, fmt = "(A66)",iostat = status) buffer
if(status /= 0) exit
write(15, rec = r) buffer
r = r + 1
end do
countera = 1
!转存实数部分的内容
do counterb = 1, num, 1
read(14, *, iostat = status) a, b
if(status /= 0) exit
write(15, rec = r) a, b
r = r + 1
end do
counterb = 1
end do
else
write(*,*)'new.txt',"does not exist"
end if
!关闭输入输出文件
close(12)
close(13)
stop
end
61.56 KB, 下载次数: 10
program jack01
implicit none
character(len = 66) buffer
integer :: num = 0
real(kind = 4) :: a, b
integer :: status = 0
integer i
integer, parameter :: lines = 18 !//文本只算18行
logical alive
inquire(file = 'new.txt',exist = alive)
if(.not.alive) then
write(*,*) "new.txt does not exist"
stop
end if
!打开输入输出文件
open(unit = 14, file = 'new.txt')
open(unit = 15, file = 't.bin', access = 'stream')!//stream是一个很霸道的二进制读写方式
CY: Do !//命名循环
!转存前面19行的内容
do i = 1, lines
read(14, fmt = "(A66)",iostat = status) buffer
if(status /= 0) exit CY
write(15) trim(buffer) !//trim一下以便减小尺寸
end do
read(14,*,iostat=status) num !//获得行数
if(status /= 0) exit CY
!转存实数部分的内容
do i = 1, num
read(14, *, iostat = status) a, b
if(status /= 0) exit CY
write(15) a, b
end do
End Do CY
close(12)
close(13)
end program jack01
pasuka 发表于 2017-10-30 12:34
为啥不能先把所有的txt文件打包成单个zip、gz格式的压缩文件，然后按照规则抽取需要的txt文件呢？ ...
肖邦的SK 发表于 2017-10-30 14:31
导师要求的，要我那这个先练习练习，然而一直报错
楚香饭 发表于 2017-10-30 12:46
你这种问题不太容易用二进制存储，因为每个 block 的文本头部都不一样长。
后面用二进制读取的时候，不知道 ...
pasuka 发表于 2017-10-30 14:37
gzip就是一种无损压缩的二进制存储格式
https://en.wikipedia.org/wiki/Gzip
https://en.wikipedia.org/wi ...
program jack02
implicit none
integer :: status , n , i
Real :: a , b
character(len=1) , allocatable :: text(:)
open(unit = 15, file = 't.bin', access = 'stream')!//stream是一个很霸道的二进制读写方式
open(unit = 14, file = 'newback.txt')
Do
Read(15,iostat=status) n !//得到文本大小
if(status/= 0) exit
if(n==0) exit
Allocate(text(n))
Read(15) text
Write(14,'(a,\)') text
Deallocate(text)
Read(15,iostat=status) n !//得到二进制大小
if(status/= 0) exit
write(14,*) n
Do i = 1 , n
Read(15) a , b
Write(14,*) a , b
End Do
End Do
End Program jack02
program jack01
implicit none
character(len = 66) buffer
integer :: num = 0
real(kind = 4) :: a, b
integer :: status = 0
integer i , locBegin , locEnd
integer, parameter :: lines = 18 !//文本只算18行
character(len=*) , parameter :: crlf = char(z'd') // char(z'a')!//换行符，不同操作系统不一样
logical alive
inquire(file = 'new.txt',exist = alive)
if(.not.alive) then
write(*,*) "new.txt does not exist"
stop
end if
!打开输入输出文件
open(unit = 14, file = 'new.txt')
open(unit = 15, file = 't.bin', access = 'stream')!//stream是一个很霸道的二进制读写方式
CY: Do !//命名循环
!转存前面18行的内容
write(15) 0 !//先输出一个0，表示大小
Inquire( 15 , pos = locBegin ) !//查询块开始位置
do i = 1, lines
read(14, fmt = "(A66)",iostat = status) buffer
if(status /= 0) exit CY
write(15) trim(buffer) , crlf !//trim一下以便减小尺寸，每行输出换行符
end do
Inquire( 15 , pos = locEnd ) !//查询块结束位置
write(15,pos=locBegin-4) locEnd-locBegin !//在开始前4个字节写入大小
read(14,*,iostat=status) num !//获得行数
if(status /= 0) exit CY
write(15,pos=locEnd) num !//回到块结束，写入实数部分的大小
!转存实数部分的内容
do i = 1, num
read(14, *, iostat = status) a, b
if(status /= 0) exit CY
write(15) a, b
end do
End Do CY
close(12)
close(13)
end program jack01
楚香饭 发表于 2017-10-31 08:36
可以把文本的大小也写在二进制文件里。
以下代码在windows上运行。如果要在其他操作系统上运行，建议修改 ...
楚香饭 发表于 2017-11-6 10:28
换行符的问题，可以百度搜索“crlf”
(a,\) 意思是，输出一个字符（a），并且不换行（\）。 ...
| 欢迎光临 Fortran Coder (http://bbs.fcode.cn/) | Powered by Discuz! X3.2 |