 | This article has multiple issues. Please help improve it or discuss these issues on the talk page . (Learn how and when to remove these template messages) (Learn how and when to remove this template message)
|
SMX (from Server Macro Expansion) is a macro processing language designed to embed macros in web pages. Originally shipped with the popular Internet Factory's Commerce Builder software, it has been ported as an Apache module.
SMX was designed to embed macros in HTML/XML pages. It originally shipped with the Internet Factory's Commerce Builder software, a relatively popular web server in the early days of the Internet, due to the ease with which a developer could produce an e-commerce website.
Rather than re-implement websites in more popular languages, like Perl or PHP, a small group of SMX fans decided to re-implement the language itself as an Apache module.
A good example of a macro is %counter(). This embeds a simple incremental counter on an HTML page. To include the results of a SQL query on a page, you can simply type %sql(<dsn>,<query>,%col(1)<br />) in the middle of an XHTML page.
Owing to the high-level nature of the language, SMX can greatly reduce the programming effort required to build dynamic or database-driven web sites.
Unlike many programming languages, SMX syntax is simple and consistent. All functions begin with a % sign, followed by the name of the function, followed either a single % sign or a parenthetical list of arguments.
Arguments can be quoted using double-quotes. Backslashes can be used to escape commas and double-quotes. A single quote at the beginning of an argument turns off interpretation of code in that argument (similar to LISP).
Everything that is not code, is, by default, output. To change this behavior, use the %nil or %null macros.
Here is a Hello World code example:
%expand% Hello World!
Using variables to create output
%expand% %set(name,World) Hello %name%!
%expand% %if(%form(expr) ,<p>Result is: %expr(%form(expr))</p> ) <formaction="%client-url%"method=post> Simple math expression: <inputname=expr></form>%expand% %counter(hits) hits
%expand% %if(%not(%exists(/tmp/gbook.sq3)) ,%sql(sqlite:/tmp/gbook.sq3,CREATE TABLE guests (name text, comment text)) ) %if(%and(%form(name),%form(comment)) ,%sql(sqlite:/tmp/gbook.sq3,"INSERT INTO guests (name, comment) VALUES (%sqlq(%form(name)),%sqlq(%form(comment)))") ) %sql(sqlite:/tmp/gbook.sq3,SELECT * FROM guests ,<p>%html-quote(%col(name)) said %html-quote(%col(comment))<hr><p><formaction="%client-url%"method=post><br>Name: <inputname=name><br>Comment: <inputname=comment><br><inputtype=submit></form> ) Common Lisp (CL) is a dialect of the Lisp programming language, published in ANSI standard document ANSI INCITS 226-1994 (R2004). The Common Lisp HyperSpec, a hyperlinked HTML version, has been derived from the ANSI Common Lisp standard.
Scheme is a minimalist dialect of the Lisp family of programming languages. Scheme consists of a small standard core with powerful tools for language extension.
In computer science, a preprocessor is a program that processes its input data to produce output that is used as input to another program. The output is said to be a preprocessed form of the input data, which is often used by some subsequent programs like compilers. The amount and kind of processing done depends on the nature of the preprocessor; some preprocessors are only capable of performing relatively simple textual substitutions and macro expansions, while others have the power of full-fledged programming languages.
A string literal or anonymous string is a type of literal in programming for the representation of a string value within the source code of a computer program. Most often in modern languages this is a quoted sequence of characters, as in x = "foo", where "foo" is a string literal with value foo – the quotes are not part of the value, and one must use a method such as escape sequences to avoid the problem of delimiter collision and allow the delimiters themselves to be embedded in a string. However, there are numerous alternate notations for specifying string literals, particularly more complicated cases, and the exact notation depends on the individual programming language in question. Nevertheless, there are some general guidelines that most modern programming languages follow.
The C preprocessor or cpp is the macro preprocessor for the C, Objective-C and C++ computer programming languages. The preprocessor provides the ability for the inclusion of header files, macro expansions, conditional compilation, and line control.
m4 is a general-purpose macro processor included in all UNIX-like operating systems, and is a component of the POSIX standard.
Factor is a stack-oriented programming language created by Slava Pestov. Factor is dynamically typed and has automatic memory management, as well as powerful metaprogramming features. The language has a single implementation featuring a self-hosted optimizing compiler and an interactive development environment. The Factor distribution includes a large standard library.
In Unix-like and some other operating systems, find is a command-line utility that locates files based on some user-specified criteria and then applies some requested action on each matched object.
Apache Velocity is a Java-based template engine that provides a template language to reference objects defined in Java code. It aims to ensure clean separation between the presentation tier and business tiers in a Web application.
In computer programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program. They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters. The syntax of comments in various programming languages varies considerably.
The null coalescing operator is a binary operator that is part of the syntax for a basic conditional expression in several programming languages, including C#,, PowerShell as of version 7.0.0, Perl as of version 5.10, Swift, and PHP 7.0.0. While its behavior differs between implementations, the null coalescing operator generally returns the result of its left-most operand if it exists and is not null, and otherwise returns the right-most operand. This behavior allows a default value to be defined for cases where a more specific value is not available.
The PHP syntax and semantics are the format (syntax) and the related meanings (semantics) of the text and symbols in the PHP programming language. They form a set of rules that define how a PHP program can be written and interpreted.
A hierarchical query is a type of SQL query that handles hierarchical model data. They are special cases of more general recursive fixpoint queries, which compute transitive closures.
Q is a programming language for array processing, developed by Arthur Whitney. It is proprietary software, commercialized by Kx Systems. Q serves as the query language for kdb+, a disk based and in-memory, column-based database. Kdb+ is based on the language k, a terse variant of the language APL. Q is a thin wrapper around k, providing a more readable, English-like interface.
Hyper Text Structured Query Language (HTSQL) is a schema-driven URI-to-SQL query language that takes a request over HTTP, converts it to a SQL query, executes the query against a database, and returns the results in a format best suited for the user agent The HTSQL language is implemented on "HTSQL servers," which use HTSQL to convert web requests into equivalent SQL, executes requests on a server-side database, and returns results in XML, HTML, CSV, JSON, or YAML formats. The current implementation as of April 2010 uses Python and works with PostgreSQL, MySQL, SQLite, Oracle, and Microsoft SQL Server databases.
Nemerle is a general-purpose, high-level, statically typed programming language designed for platforms using the Common Language Infrastructure (.NET/Mono). It offers functional, object-oriented and imperative features. It has a simple C#-like syntax and a powerful metaprogramming system. In June 2012, the core developers of Nemerle were hired by the Czech software development company JetBrains. The team is focusing on developing Nitra, a framework to implement extant and new programming languages. This framework will likely be used to create future versions of Nemerle.
In computer programming, string interpolation is the process of evaluating a string literal containing one or more placeholders, yielding a result in which the placeholders are replaced with their corresponding values. It is a form of simple template processing or, in formal terms, a form of quasi-quotation. String interpolation allows easier and more intuitive string formatting and content-specification compared with string concatenation.
PL/SQL is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database, Times Ten in-memory database, and IBM DB 2. Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database.
Yesod is a free and open-source web framework based on Haskell for productive development of type-safe, REST model based, high performance web applications, developed by Michael Snoyman et al.
Tcl is a high-level, general-purpose, interpreted, dynamic programming language. It was designed with the goal of being very simple but powerful. Tcl casts everything into the mold of a command, even programming constructs like variable assignment and procedure definition. Tcl supports multiple programming paradigms, including object-oriented, imperative and functional programming or procedural styles.