密码实验室/ Syntech

本文介绍了密码实验室/ Syntech的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

Cipher Lab生产一些终端来收集数据，我们可以使用一个普通的C实现
程序，我认为它是ANSI

C89兼容，虽然不完全。他们也拥有一套

的图书馆，但总而言之，这是我们正在讨论的基本C语言。

好的，这是我第一次做很多事情。我从来没有去过
usenet，而且我不是Google网上论坛或IRC的专家，而且是b $ b类似论坛的东西，除了PHPBB / VBulletin PHP

论坛系统，这是非常简单的内容。

所以我不确定我是在发布这个正确的地方，或者如果我甚至是
应该在这里做。我做了我的研究，但它永远不会那么好

就像尝试一样。

我也没想，也不想寻找这个关于

所有者网站的信息。我相信他们不会得到太多支持，而且肯定没有我想要的那么深。

我也开始使用C这个一年，并且刚刚获得了深度

它（尽管我很不熟悉它，因为我们不知道它是什么）。希望，至少，我会完成一些文档

我自己，如果没有人加入。

除了介绍，我确实有很多问题，我想知道

如果有人知道我可以找到更具体的地方

找到为C编程的人和那些终端来自Cipher

希望分享知识，讨论编程等的实验室。

特别是，我很想知道是否有人可以成功使用任何

众所周知的字符串库，例如Paul Hsieh的bstring（
），虽然我对此表示怀疑。而且我知道

的经验，分享一些定制的库

以解决这些终端上的许多问题会很好，因为我已经

我自己从头开始痛苦地建造一个。

无论如何，我会组织并尝试隔离一些问题我是

使用终端并将它们发布在这里，一起

我已经使用了一些功能，并且可能对某些人有用，即使是就像我的基本学习目的一样，因为我（或者至少是b $ b）最不喜欢我自己的基础知识。

下一个主题我会试着带来的是：

1.字符串 - 我认为我所遇到的所有麻烦中有90％来自于试图操纵它们。一个很好的简单的解决方法库，不使用

malloc，将不胜感激。但也许我会尽快完成我的

。

2. extern volatile unsigned long sys_msec - 不是sys_msec本身，

而不是试图将其与其他unsigned long一起使用变量。我已经试图孤立这个问题而没有成功，所以我更加感激了为什么我会在我的程序中得到它，我很感兴趣它必须有大约

5000行。

3. void OSTimeDly（unsigned long ticks） - 创建任务时使用

OSTaskCreate，它只会被OSTimeDly激活。使用时可能会非常麻烦，特别是在与getchar混合使用时。

4. stdarg.h - 它没有va_copy，但我'我没有问题

。虽然我很想看到va_copy的实现，因为

我不知道怎么写它，我的问题在于使用它来创建我自己的vprintf 。我可以创建一个dprintf这只是好的，但是我想要扩展它，制作一个可以使用

dprintf的rdprintf。为此，我需要创建一个vdprintf，那就是我在哪里
不能超越。

5.加速问题 - 显然，最苛刻的是打印和清除屏幕。我已经构建了一个函数来列出

DBF文件中的条目，但向下滚动速度很慢。这是唯一的地方

，我觉得速度是一个问题，我仍然想弄清楚

a方式让它顺利，尽管我已经设法使它成为令人满意的
。

6.选择查询 - 这可能只是一个梦想，但我确实希望

能够使用至少类似于

SQL的内容过滤上面的列表。现在，我根本无法过滤它。也许它永远不会。

现在这种方式已经足够了！

Cipher Lab produces some terminals to collect data where we can
program using one implementation of plain C which I believe to be ANSI
C89 compatible, although not fully. They have their on set of
libraries as well, but all in all, it''s basic C we''re talking about.

Ok, this is my first time on lots of things. I''ve never been to
usenet, and I''m not much an expert of Google Groups, or IRC, and
similar forums-thingies, with the exception of PHPBB / VBulletin PHP
forums system, which are pretty simple content-wise.

So I''m not sure I''m posting this in the right place, or if I even
should be doing it here. I did my research but it''ll never be as good
as just trying it out.

Also I did not and wish not to look for this kind of information on
the owner''s site. I believe they won''t have much support, and
certainlly not as deep as I want.

I''m also starting working with C this year, and getting the depth of
it as well just now (although I''m a little familiar with it since
2000). Hopefully, at very least, I''ll have some documentation done
alone by myself, if nobody joins.

Introductions aside, I do have lots of questions and I''d like to know
if by any chance someone knows of a more specific place where I could
find people that are programming for C and those terminals from Cipher
Lab that wish to share knowledge, discuss over programming, etc.

Particularly, I''d love to know if someone could sucessfully use any
well known string library on it, such as Paul Hsieh''s bstring (
http://bstring.sourceforge.net ), although I doubt it. And I know for
experience that it would be nice to share some custom made libraries
to solve lots of troubles on those terminals, since I''ve been
painfully building one myself, from scratch.

Anyway, I''ll be organizing and trying to isolate some problems I''m
getting with the terminal and post them following in here, together
with some functions I''ve been using, and may be of some use for
someone, even if just as basic learning purpose, since I am (or at
least feel like) still at basics myself.

The next "topics" I''ll try to bring are:
1. strings - I think 90% of all troubles I''m having are from trying to
manipulate them. A good simple workaround library, which does not use
malloc, would be greatly appreciated. But maybe I''ll just finish my
own soon enough.

2. extern volatile unsigned long sys_msec - not the sys_msec itself,
rather trying to use it with other "unsigned long" variables. I''ve
tried to isolate this problem with no success yet, so I''m even more
intrigued in why I''m getting it in my program, which must have around
5000 lines.

3. void OSTimeDly (unsigned long ticks) - when creating a task with
OSTaskCreate, it will only be activated by an OSTimeDly. This can get
really messy to use, specially when mixing it with getchar.

4. stdarg.h - it does not have va_copy, but I''m not having an issue
with that. Although I''d love to see an implementation of va_copy since
I have no idea how to write it, my problem here is on using it to
create my own vprintf. I could create a "dprintf" that works just
fine, but I''ve wanted to expand it, making a rdprintf that would use
dprintf. For that, I need to create a vdprintf, and that''s where I
can''t go beyond.

5. speeds issues - apparently, the most demanding is to print and
clear the screen. I''ve build a function to list the entries from the
DBF files, but it''s quite slow to scroll down. This is the only place
where I''ve seem speed as an issue, and I''m still trying to figure out
a way to make it smooth, although I''ve managed to make it
satisfactory.

6. select queries - this is probably just a "dream", but I did wish to
be able to filter the above list with something at least similar to a
SQL. For now, I just can''t filter it at all. Maybe it never will.
And that''s way more than enough for now!

OSTimeDly

密码实验室/ Syntech

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