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[ 源代码: tclex  ]

软件包: tclex (1.2a1-15) [universe]

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维护者:

Please consider filing a bug or asking a question via Launchpad before contacting the maintainer directly.

Original Maintainers (usually from Debian):

It should generally not be necessary for users to contact the original maintainer.

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A lexical analyzer generator for Tcl

tcLex is a lexer (lexical analyzer) generator extension to Tcl. It is inspired by Unix and GNU lex and flex, which are "tools for generating programs that perform pattern-matching on text". tcLex is very similar to these programs, except it uses Tcl philosophy and syntax, whereas the others use their own syntax and are used in conjunction with the C language. People used to lex or flex should then feel familiar with tcLex. tcLex is a small extension (the Windows compiled version is about 20kb, and the source is about 150kb), because it extensively uses the Tcl library. However, the current doesn't use Tcl's regexp code anymore but a patched version is now included in tcLex, which makes it slightly bigger (by a few KB). tcLex should work with Tcl 8.0 and later. tcLex will NEVER work with earlier versions, because it uses Tcl 8.0's "object" system for performance. The most interesting features are:

 * cross-platform support, thanks to Tcl. Though it has been
   developed on Windows and tested on Windows and Unix only, it
   should work on other platforms as long as Tcl exists on these
   platforms. Supported Tcl platforms are Windows 95/NT, Unix (Linux,
   Solaris...) and Macintosh. Other platforms are VMS, OS/2,
   NeXTStep, Amiga...

 * unlike lex and flex, which only generate static lexers written in
   C and intended to be compiled, tcLex dynamically generates Tcl
   commands that can be used like other C commands or Tcl procedures
   from within Tcl scripts or C programs.

 * it uses Tcl regular expressions. That means you don't have to
   learn another regexp language.

 * it works with Tcl namespaces

 * the generated lexer commands can be used in one pass or
   incrementally, because they maintain state information. That way,
   several instances of the same lexer (eg a HTML parser) can run at
   the same time in distinct call frames and maintain distinct states
   (local variables...). Lexer need not be specially designed in
   order to be used incrementally, the same lexer can transparently
   be used in one pass or incrementally. This feature is especially
   useful when processing text from a file or an Internet socket (Web
   pages for example), when data is not necessarily available at the
   beginning of the processing.

其他与 tclex 有关的软件包

  • 依赖
  • 推荐
  • 建议
  • enhances
  • dep: libc6 (>= 2.4)
    Embedded GNU C Library: Shared libraries
    同时作为一个虚包由这些包填实: libc6-udeb
  • dep: tcl (>= 8.4.16-1)
    The Tool Command Language (default version) - run-time files
    或者 tclsh
    本虚包由这些包填实: tcl8.3, tcl8.4, tcl8.5

下载 tclex

下载可用于所有硬件架构的
硬件架构 软件包大小 安装后大小 文件
amd64 47.3 kB220.0 kB [文件列表]
i386 45.6 kB212.0 kB [文件列表]