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FXString - Essential String Manipulation in FOX

FXString provides essential string manipulation capabilities in FOX. It supports UTF-8 encoded narrow character strings and wide character strings. It also supports a variety of quoting and escaping operations. Its syntax is similar to that of scanf and vprintf.

Return a set of n characters from src to dst. This range may be inclusive or exclusive.

Convert a long integer number to a string

1.7.7817 Feb 2022 14:05 minor feature: Major rewrite of FXJSON parser; faster, stricter, better UTF8 support. New functions added to math API's.

FXString::vformat() now formats a range of n characters. This is more reliable than the old way of doing it, and it uses less stack space. Adie text editor improvements:. Adding permanent highlighting for matching braces. Scrolling syntax highlighting is now more consistent.

Convert a string to a vprintf-like format

The vprintf family of functions are similar to printf(), but they use a variable argument list (va_list) initialized with the va_start and va_end macros from the stdarg.h> header file.

The width sub-specifier limits the number of wide characters printed. This is useful when used with the s or f specifiers, since it prevents trailing zeroes from being written.

Specifies the style of conversion of the double argument. Default is style e.

Convert a string to a scanf-like format

If you want to scan a string using a format similar to scanf, you can do this with fxstringt. This function provides essential string manipulation capabilities. Internally, all strings are stored as an array of bytes preceeded by the length of the string and an end-of-string character.

Return a set of characters from start partition to end partition separated by delim of size n. This includes a list of all occurrences of the given character ch in the entire string.

Convert a string to a wide character string

A string that is converted to a wide character string can be used as an argument for any function that accepts stdin. The string will be padded with spaces by default on the left and may be padded with decimal integers on the right.

A conversion specification contains zero or more directives. A directive that is not a conversion wide character is executed as follows:

An optional precision that gives the minimum number of digits to appear for the d, i, o, u, x, and X conversion specifiers; or the number of digits to appear after the radix character for the g and G conversion specifiers.

Convert a string to a narrow character string

If you want to convert a string to a narrow character string, use f. The function returns a string consisting of the specified Unicode code points. It evaluates any escaped characters in the argument.

It also evaluates the binary, octal, and hexadecimal representations of numbers in str. This allows you to write strings that display scientific notation correctly.

It splits the string at occurrences of delimiter and returns the resulting fields as a set of text rows. It also splits the string at occurrences of a POSIX regular expression pattern and returns the resulting sets.

Convert a string to a wide character substring

FXString provides essential string manipulation capabilities in FOX. It is a type that is initialized directly from strings and supports both narrow character string and wide character string encodings. It also supports converting between these encodings. This function converts a string to a wide character substring by counting the number of utf8 characters in the range start, end. It can also be used to increment or decrement the byte offset by a set of utf8 characters.

Convert a string to a narrow character substring substring

Use this function to convert a string to a narrow character substring. This method works well for obtaining substrings that contain a specific number of characters, including spaces and non-alphanumeric punctuation.

Returns a string made up of count repetitions of string, or if length is null, returns all but the first |length| characters of string. If coding-system is not nil, the string is encoded into unibyte bytes before returning it.