Module lib_util 

General utility functions used across the crate.

These functions are ported from Go lib.go and do not depend on the File struct. File-specific helpers live in file.rs and excelize.rs.

Structs

Stack

A simple stack abstraction.

Functions

bool_ptr

Returns a reference-counted pointer-like Box containing true or false.

bstr_marshal

Encodes characters as binary basic string escapes so that the value can be stored in an XML 1.0 document.

bstr_unmarshal

Parses the binary basic string, trimming escaped literals which are not permitted in an XML 1.0 document. Escapes have the form _xHHHH_.

cell_name_to_coordinates

Converts an alphanumeric cell name to [col, row] coordinates.

cell_refs_to_coordinates

Converts two cell references to a coordinate tuple.

column_name_to_number

Converts an Excel column name to a 1-based column number.

column_number_to_name

Converts a 1-based column number to an Excel column name.

coordinates_to_cell_name

Converts [col, row] coordinates to an alphanumeric cell name.

coordinates_to_range_ref

Converts a coordinate tuple back to a range reference.

count_utf16_string

Counts the number of UTF-16 code units in a string.

flat_sqref

Converts a reference sequence such as "A1 A2:B3" to a map of column number to a sorted list of [col, row] coordinates.

float64_ptr

Returns a Some wrapper for a f64 value.

float_to_frac_use_continued_fraction

Converts a floating-point decimal to a fraction using continued fractions and recurrence relations.

float_to_fraction

Converts a floating-point number to a fraction string representation with the specified placeholder widths for numerator and denominator.

in_coordinates

Returns the index of x in the coordinate list a, or -1 if not found.

in_float64_slice

Returns the index of x in a, or -1 if not found.

in_str_slice

Returns the index of x in a, or -1 if not found.

int_ptr

Returns a Some wrapper for an integer value.

is_numeric

Determines whether s is a valid numeric expression and returns its precision and value.

join_cell_name

Joins column name and row number into a cell name.

range_ref_to_coordinates

Converts a range reference such as "A1:B2" to [x1, y1, x2, y2].

sort_coordinates

Corrects a cell range so that the top-left and bottom-right corners are ordered correctly.

split_cell_name

Splits a cell name into column name and row number.

str_map

Helper to build a HashMap<String, String> from a static slice of pairs.

string_ptr

Returns a Some wrapper for a string value.

truncate_utf16_units

Truncates a string to a maximum number of UTF-16 code units.

uint_ptr

Returns a Some wrapper for an unsigned 32-bit value.