This page has been translated automatically.
视频教程
界面
要领
高级
实用建议
专业(SIM)
UnigineEditor
界面概述
资产工作流程
设置和首选项
项目开发
调整节点参数
Setting Up Materials
设置属性
照明
Landscape Tool
Sandworm
使用编辑器工具执行特定任务
如何擴展編輯器功能
嵌入式节点类型
Nodes
Objects
Effects
Decals
光源
Geodetics
World Nodes
Sound Objects
Pathfinding Objects
Players
编程
基本原理
搭建开发环境
使用范例
C++
C#
UUSL (Unified UNIGINE Shader Language)
Plugins
File Formats
Materials and Shaders
Rebuilding the Engine Tools
GUI
双精度坐标
应用程序接口
Containers
Common Functionality
Controls-Related Classes
Engine-Related Classes
Filesystem Functionality
GUI-Related Classes
Math Functionality
Node-Related Classes
Objects-Related Classes
Networking Functionality
Pathfinding-Related Classes
Physics-Related Classes
Plugins-Related Classes
IG Plugin
CIGIConnector Plugin
Rendering-Related Classes
创建内容
内容优化
Materials
Material Nodes Library
Miscellaneous
Input
Math
Matrix
Textures
Art Samples
Tutorials
注意! 这个版本的文档是过时的,因为它描述了一个较老的SDK版本!请切换到最新SDK版本的文档。
注意! 这个版本的文档描述了一个不再受支持的旧SDK版本!请升级到最新的SDK版本。

String Global Functions

Warning
The scope of applications for UnigineScript is limited to implementing materials-related logic (material expressions, scriptable materials, brush materials). Do not use UnigineScript as a language for application logic, please consider C#/C++ instead, as these APIs are the preferred ones. Availability of new Engine features in UnigineScript (beyond its scope of applications) is not guaranteed, as the current level of support assumes only fixing critical issues.

String Global Functions Class

Members


string addslashes ( string str ) #

Returns a string with backslashes before characters that need to be escaped. These characters are double quote ("), backslash (\), tabulation symbol (\t), new line symbol (\n), carriage return symbol (\r).

Arguments

  • string str - String to be escaped.

Return value

Escaped string.

int crc32 ( string string ) #

Returns a control sum for a given string.

Arguments

  • string string - String to calculate a control sum for.

Return value

Control sum.

Variable extension ( string str ) #

Returns an extension of a given file.

Arguments

  • string str - File name (or a full path to it) with the extension.

Return value

File extension.

Variable extension ( string str, string ext ) #

Changes file extension to the specified one.

Arguments

  • string str - File name or path.
  • string ext - Extension to be set.

Return value

New file name or file path.

string format ( string str, ... ) #

Returns a string produced according to the formatting string. The formatting string is composed of zero or more ordinary characters (excluding %) that are copied directly to the result string and control sequences, each of which results in fetching its own parameter. Each control sequence consists of a percent sign (%) followed by one or more of these elements, in order:
  • An optional number, a width specifier, that says how many characters (minimum) this conversion should result in.
  • An optional precision specifier that says how many decimal digits should be displayed for floating-point numbers.
  • A type specifier that says what type the argument data should be treated as. Possible types:
    • c: the argument is treated as an integer and presented as a character with that ASCII value.
    • d or i: the argument is treated as an integer and presented as a (signed) decimal number.
    • o: the argument is treated as an integer and presented as an octal number.
    • u: the argument is treated as an integer and presented as an unsigned decimal number.
    • x: the argument is treated as an integer and presented as a hexadecimal number (with lowercase letters).
    • X: the argument is treated as an integer and presented as a hexadecimal number (with uppercase letters).
    • f: the argument is treated as a float and presented as a floating-point number.
    • g: the same as e or f, the shortest one is selected.
    • G: the same as E or F, the shortest one is selected.
    • e: the argument is treated as using the scientific notation with lowercase 'e' (e.g. 1.2e+2).
    • E: the argument is treated as using the scientific notation with uppercase 'E' (e.g. 1.2E+2).
    • s: the argument is treated as and presented as a string.
    • p: the argument is treated as and presented as a pointer address.
    • %: a literal percent character. No argument is required.

Arguments

  • string str - Formatting string.
  • ... - Arguments, multiple allowed.

Return value

A formatted string.

Examples

Source code (UnigineScript)
string str = format("string: %s, int: %d and float: %.4e","some words",10, 1.2e-2);
// str now is "string: some words, int: 10 and float: 1.2000e-02"

string lower ( string str ) #

Makes a string lowercase.

Arguments

  • string str - String to modify.

Return value

Input string with all alphabetic characters converted to lowercase.

int match ( string pattern, string str ) #

Simple string matching, which is faster than RegExp-based ones. Some wildcards are supported in the pattern:
  • ?: any single symbol.
  • *: any string of arbitrary length.
  • |: OR statement; e.g.: "red|white" pattern matchs both "red" and "white" strings.

Arguments

  • string pattern - A pattern.
  • string str - A target string.

Return value

1 if match is found, 0 otherwise.

Variable memory ( int size ) #

Converts a given number of bytes to KB (kilobytes), MB (megabytes) or GB (gigabytes) and represents them as a string.

Arguments

  • int size - Number of bytes.

Return value

The result of conversion. If the size value is less that1024, it won't be converted.

Examples

Source code (UnigineScript)
log.message("The result is: %s\n",memory(2048)); 

// The result is: 2.0 KB

void printf ( string str, ... ) #

Prints a formatted string. See the formatting string description.

Arguments

  • string str - Formatting string.
  • ... - Arguments, multiple allowed.

int re_match ( string str, string regexp ) #

Performs a regular expression match. See the RegExp class documentation for more information on the syntax of regular expressions.
Notice
This function is an analog of the RegExp.match() method.

Arguments

  • string str - String to search in.
  • string regexp - Pattern.

Return value

Length of the matched part, or -1, if the pattern could not be matched, and -2, if an error is encountered.

string re_replace ( string str, string regexp, string after ) #

Performs a regular expression search and replace. See the RegExp class documentation for more information on the syntax of regular expressions.
Notice
This function is an analog of the RegExp.replace() method.

Arguments

  • string str - String to modify.
  • string regexp - Pattern.
  • string after - Replacement.

Return value

Modified string.

int re_search ( string str, string regexp, int id = [] ) #

Searches for a sub-string matching a given regular expression and returns a set of matches. See the RegExp class documentation for more information on the syntax of regular expressions.
Notice
This function is an analog of the RegExp.search() method.

Arguments

  • string str - String to search in.
  • string regexp - Pattern.
  • int id - Reference to a vector.

Return value

Size of a vector with matches.

string replace ( string str, string before, string after ) #

Replaces all occurrences of a search string with a replacement string. If you don't need advanced replacing rules (like regular expressions), use this function instead of re_replace().

Arguments

  • string str - String to modify.
  • string before - Search string.
  • string after - Replacement sub-string.

Return value

A string with replaced fragments.

int sscanf ( string str, string format, int id = [] ) #

Parses a string according to a format. See the formatting string description.

Arguments

  • string str - String to parse.
  • string format - Formatting string.
  • int id - Reference to a vector.

Return value

Size of a vector with parsed objects.

Examples

Source code (UnigineScript)
int res[10];
printf("%d\n",sscanf("10 20.32 string","%d %f %s",res));
printf("%s\n%s\n%s\n",typeinfo(res[0]),typeinfo(res[1]),typeinfo(res[2]));
Output
3
int: 10
float: 20.32
string: "string"

int strchr ( string str, int c ) #

Finds the first occurrence of a given character in a string.

Arguments

  • string str - String to search in.
  • int c - Character to search for.

Return value

Position of the first character occurrence.

int strcmp ( string s0, string s1 ) #

Binary-safe string comparison.

Arguments

  • string s0 - First string.
  • string s1 - Second string.

Return value

  • 0 if compared strings are the same.
  • -1 if the first different character in s0 is less than that in s1.
  • 1 if the first different character in s0 is greater than that in s1.

Examples

Source code (UnigineScript)
string s0 = "abcd";
string s1 = "abaa";

int result = strcmp(s0, s1);

if(result == 0) {
    log.message("The strings are the same!");
} else {
    log.message("Comparison result: %d\n", result);
}
Output
Comparison result: 1

string stripslashes ( string str ) #

Un-escapes a string quoted with addslashes().

Arguments

  • string str - String to be un-escaped.

Return value

Un-escaped string.

int strlen ( string str ) #

Gets a string length. (For UTF-8 encoded string, see utf8strlen() method.)

Arguments

  • string str - String to measure.

Return value

Length of the given string.

int strncmp ( string s0, string s1, int n ) #

Binary-safe string comparison of the first n characters.

Arguments

  • string s0 - First string.
  • string s1 - Second string.
  • int n - Number of characters to compare.

Return value

  • 0 if compared substrings are the same.
  • Negative value if the first different character in s0 is less than that in s1.
  • Positive value if the first different character in s0 is greater than that in s1.

Examples

Source code (UnigineScript)
string s0 = "abcd";
string s1 = "abacus";

int result = strncmp(s0, s1, 4);

if(result == 0) {
    log.message("The substrings are the same!");
} else {
    log.message("Comparison result: %d\n", result);
}
Output
Comparison result: 2

int strrchr ( string str, int c ) #

Finds the last occurrence of a given character in a string.

Arguments

  • string str - String to search in.
  • int c - Character to search for.

Return value

Position of the last character occurrence.

int strrstr ( string s0, string s1 ) #

Searches the last occurence of a given sub-string in a string.

Arguments

  • string s0 - String to search in.
  • string s1 - Sub-string to search for.

Return value

Position of the last occurrence of the needle in the haystack.

int strsplit ( string str, string delimiters, int id = [] ) #

Splits a string into a vector.

Arguments

  • string str - String to split.
  • string delimiters - List of delimiters. If an empty string is passed, "\t\n\r " will be used by default.
  • int id - Reference to a vector.

Return value

Size of a vector with string parts.

int strstr ( string haystack, string needle ) #

Searches a given sub-string in a string.

Arguments

  • string haystack - String to search in.
  • string needle - Sub-string to search for.

Return value

Position of the first occurrence of the needle in the haystack.

string substr ( string str, int pos, int len = -1 ) #

Returns a specified part of a string. (For UTF-8 encoded string, see utf8substr() method.)

Arguments

  • string str - String to truncate.
  • int pos - Starting position of a sub-string.
  • int len - Sub-string length.

Return value

A sub-string.

string trim ( string str, string symbols = 0 ) #

Removes from the string the specified leading and trailing characters.
Notice
If no symbols are passed as an argument, white-space characters will be removed in the beginning or the end of the string, if found.

Arguments

  • string str - String to remove symbols from.
  • string symbols - Symbols to be removed from the beginning or the end of the string.

Return value

Trimmed string.

Examples

Source code (UnigineScript)
string s = "a b cd b b d b ab bba";
log.message("%s\n",trim(s," ab"));
Output
cd b b d

Variable unicodeToUtf8 ( int src = [] ) #

Converts an array of Unicode characters into the UTF-8 encoded string.

Arguments

  • int src - Source array ID.

Return value

UTF-8 string.

string upper ( string str ) #

Makes a string uppercase.

Arguments

  • string str - String to modify.

Return value

Input string with all alphabetic characters converted to uppercase.

Variable utf8strlen ( string str ) #

Gets a length of the string in UTF-8 encoding. Unlike a simple strlen() method, it returns the correct number of UTF-8 encoded characters.

Arguments

  • string str - String to measure.

Return value

Length of the given string.

Variable utf8substr ( string str, int pos, int len = -1 ) #

Returns a specified part of a string in UTF-8 encoding. Unlike a simple substr() method, it correctly counts UTF-8 encoded characters.

Arguments

  • string str - String to truncate.
  • int pos - Starting position of a sub-string.
  • int len - Sub-string length.

Return value

A sub-string.

Variable utf8ToUnicode ( string src, int size = [] ) #

Converts an encoded UTF-8 string into the array of Unicode characters.

Arguments

  • string src - Source string.
  • int size - Return array ID.

Return value

Unicode encoded character array.
Last update: 2022-03-10
Build: ()