drawing_text.c File Reference

Text utilities: truncates lines & handles UTF-8 display width. More...

#include "minishell_ui.h"

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Detailed Description

Text utilities: truncates lines & handles UTF-8 display width.

Definition in file drawing_text.c.

Functions
static int	utf8_byte_len (unsigned char c)
	Return the length in bytes of an UTF-8 character. More...
char *	truncate_line (const char *line, int max_width)
	Copy up to max_width visible characters into a static buffer. More...
int	visual_strlen (const char *s)
	Calculate the visual display width of a UTF-8 string in terminal cols. More...

Function Documentation

utf8_byte_len()

static int utf8_byte_len ( unsigned char  c )

static

Return the length in bytes of an UTF-8 character.

Parameters

c	First byte of the UTF-8 sequence

Returns

4, 3, 2 or 1 for ASCII

Definition at line 21 of file drawing_text.c.

Referenced by truncate_line(), and visual_strlen().

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truncate_line()

char* truncate_line	(	const char *	line,
		int	max_width
	)

Copy up to max_width visible characters into a static buffer.

Handles UTF-8 sequences

Parameters

line	Source string to truncate (could be NULL)
max_width	Maximum number to include

Returns

Pointer to static buffer holding the truncated result

Note

The static buffer gets overwritten on every call

Definition at line 42 of file drawing_text.c.

References BUF_SIZE, and utf8_byte_len().

Referenced by draw_line_content().

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visual_strlen()

int visual_strlen

(

const char *

s

)

Calculate the visual display width of a UTF-8 string in terminal cols.

4 byte (emoji range) are counted as 2 columns, the others as 1

Parameters

s	UTF-8 string (NULL terminated)

Returns

Visual column width of the string

Definition at line 75 of file drawing_text.c.

References utf8_byte_len().

Referenced by draw_box_title().

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