Module util 

XML utility functions for character classification and string helpers.

Provides the low-level character classification routines needed by the parser, matching the XML 1.0 specification’s definitions for name characters, whitespace, and UTF-8 handling.

Compatibility with TinyXML2

These functions match TinyXML2’s XMLUtil static methods. TinyXML2 uses a simplified character classification that covers ASCII and common Unicode ranges. Our implementation follows the same practical subset.

Functions

collapse_whitespace

Collapses whitespace in a string according to TinyXML2’s COLLAPSE_WHITESPACE mode.

is_name_char

Returns true if the character can appear in an XML name (after the first character).

is_name_start_char

Returns true if the character can start an XML name.

is_whitespace

Returns true if the character is XML whitespace.

is_whitespace_byte

Returns true if the byte is XML whitespace.

read_name

Reads an XML name from the beginning of a string slice.

skip_whitespace

Skips whitespace characters at the beginning of a string slice.

starts_with_bom

Checks if a string starts with the UTF-8 BOM (byte order mark).

strip_bom

Strips the UTF-8 BOM from the beginning of a string if present.