标准读取和写入FILE功能用于指代存储器 [英] Standard Read and Write FILE functions to refer to memory
问题描述
我有大量使用标准文件函数的遗留代码。
我想传递内存指针而不是FILE指针。
我试图在代码中使用FILE来引用内存缓冲区。
基本上，我希望能够使用所有标准的读写
函数，但是我希望他们引用内存位置，而不是
盘
文件。
我不想触及遗留代码。有没有人知道图书馆
来做这件事。我很感激帮助。
Ben Beroukhim
I have huge number of legacy code which use standard files functions.
I would like to pass a memory pointer rather than a FILE pointer.
I am trying to use FILEs in the code to refer to memory buffers.
Basically, I want to be able to use all the standard read and write
functions, but I want them to refer to memory locations, rather than
disk
files.
I do not want to touch the legacy code. Does any one know of a library
to do this. I would appreciate the help.
Ben Beroukhim
推荐答案
bb ******** @ aws.com （ben beroukhim）写道：
bb********@aws.com (ben beroukhim) writes:
我是试图在代码中使用FILE来引用内存缓冲区。基本上，我希望能够使用所有标准的读写功能，但我希望它们能够引用内存位置，而不是磁盘文件。
I am trying to use FILEs in the code to refer to memory
buffers. Basically, I want to be able to use all the standard
read and write functions, but I want them to refer to memory
locations, rather than disk files.
没有标准的方法可以做到这一点。然而，
C库的许多实现提供了允许它的扩展。你应该
参考C实现的参考手册，看看你的b
$ b。
-
int main（void）{char p [] =" ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuv wxyz.\
\ n"，* q =" kl BIcNBFr.NKEzjwCIxNJC" ;; int i = sizeof p / 2; char * strchr（）; int putchar（\
）; while（* q）{i + = strchr（p，* q ++） - p; if（i> =（int ）sizeof p）i- = sizeof p-1; putchar（p [i] \
）;} return 0;}
There is no standard way to do this. Many implementations of the
C library offer extensions that allow it, however. You should
refer to the reference manual for your C implementation to see if
yours is one of them.
--
int main(void){char p[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuv wxyz.\
\n",*q="kl BIcNBFr.NKEzjwCIxNJC";int i=sizeof p/2;char *strchr();int putchar(\
);while(*q){i+=strchr(p,*q++)-p;if(i>=(int)sizeof p)i-=sizeof p-1;putchar(p[i]\
);}return 0;}
2004年11月30日11:54:01 -0800
bb********@aws.com （ben beroukhim）写道：
On 30 Nov 2004 11:54:01 -0800
bb********@aws.com (ben beroukhim) wrote:
我有大量使用标准文件函数的遗留代码。
我想传递内存指针而不是FILE指针。
我试图在代码中使用FILE来引用内存缓冲区。
基本上，我希望能够使用所有标准的读写功能，但我希望他们重新开始fer到内存位置，而不是磁盘文件。
由于C文件功能是文件功能，因此它们对文件进行操作。
我不想触及遗留代码。有没有人知道图书馆
这样做。我很感激帮助。
I have huge number of legacy code which use standard files functions.
I would like to pass a memory pointer rather than a FILE pointer.
I am trying to use FILEs in the code to refer to memory buffers.
Basically, I want to be able to use all the standard read and write
functions, but I want them to refer to memory locations, rather than
disk
files.
Since the C file functions are file functions they operate on files.
I do not want to touch the legacy code. Does any one know of a library
to do this. I would appreciate the help.
没有库可以将文件转换为文件以外的任何内容。即使这样的事情是可能的，但对于这个群体来说仍然不合适，因为
我们只讨论标准C.
< OT>
您可以在专用于您的系统的组中询问RAM磁盘。
< / OT>
-
Flash Gordon
生活在有趣的时代。
虽然我的电子邮件地址说垃圾邮件，但它是真实的，我读了它。
No library can turn files in to anything other than files. Even if such
a thing were possible, it would still be off topic for this group since
we only discuss standard C.
<OT>
You could ask in a group dedicated to your system about RAM disks.
</OT>
--
Flash Gordon
Living in interesting times.
Although my email address says spam, it is real and I read it.
Flash Gordon< sp ** @ flash-gordon.me.uk>写道：
Flash Gordon <sp**@flash-gordon.me.uk> writes:
2004年11月30日11:54:01 -0800
bb ** ******@aws.com （ben beroukhim）写道：
On 30 Nov 2004 11:54:01 -0800
bb********@aws.com (ben beroukhim) wrote:
我有大量使用标准文件功能的遗留代码。
我想传递一个内存指针而不是一个FILE指针。
我试图在代码中使用FILE来引用内存缓冲区。
基本上，我希望能够全部使用标准的读写功能，但是我想让它们引用内存位置，而不是磁盘文件。
I have huge number of legacy code which use standard files functions.
I would like to pass a memory pointer rather than a FILE pointer.
I am trying to use FILEs in the code to refer to memory buffers.
Basically, I want to be able to use all the standard read and write
functions, but I want them to refer to memory locations, rather than
disk
files.
自C文件函数是他们对文件进行操作的文件函数。
Since the C file functions are file functions they operate on files.
当然可以，但是什么是文件？
有'没有理由C实现无法提供将
引用到内存缓冲区的方法，就好像它是一个文件一样。例如，它可以建立一个任何文件名以mem：开头的约定。将
指向内存缓冲区。
从某种意义上说，它就像询问如何使用FILE来引用文件一样
存储在硬盘上（除了几乎所有C实现之外
支持这样的接口）。
这完全是针对特定于实现的。在标准C中无法使用
来实现所有实现。
-
Keith Thompson（The_Other_Keith） ks***@mib.org < http：//www.ghoti.net/~ kst>
圣地亚哥超级计算机中心< *> < http://users.sdsc.edu/~kst>
我们必须做点什么。这是事情。因此，我们必须这样做。
Sure, but what is a "file"?
There''s no reason a C implementation couldn''t provide a way to refer
to a memory buffer as if it were a file. For example, it could
establish a convention that any file name starting with "mem:" refers
to a memory buffer.
In a sense, it''s just like asking how to use FILEs to refer to files
stored on a hard drive (except that almost all C implementations
support such an interface).
This is entirely implementation-specific, of course. There''s no way
to do it in standard C that''s going to work on all implementations.
--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.
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