nitro_util.c File Reference

#include "nitro_util.h"
#include "file_util.h"

Functions
int	Nitro_HasMagic (const u8 *data, size_t size, const char *magic)
	Verifies if the buffer starts with the target 4-character magic signature. More...
int	Nitro_FindSection (const u8 *data, size_t size, const char *magic, size_t *out_offset, u32 *out_size)
	Searches for a section starting with a specific 4-character magic string. More...
void	Nitro_GetPrintableMagic (const u8 *data, size_t size, char out[5])
	Safely reads the first 4 bytes of a buffer and formats them as a null-terminated string. More...
int	Nitro_AbsInt (int value)
	Math helper returning absolute value of an integer. More...
s32	Nitro_ReadS32LE (const u8 *p)
	Safely reads a little-endian signed 32-bit value. More...
s16	Nitro_ReadS16LE (const u8 *p)
	Safely reads a little-endian signed 16-bit value. More...

Function Documentation

Nitro_AbsInt()

int Nitro_AbsInt

(

int

value

)

Math helper returning absolute value of an integer.

Parameters

value

Integer value.

Returns

Absolute integer value.

Nitro_FindSection()

int Nitro_FindSection	(	const u8 *	data,
		size_t	size,
		const char *	magic,
		size_t *	out_offset,
		u32 *	out_size
	)

Searches for a section starting with a specific 4-character magic string.

Parameters

data	Raw file data buffer.
size	Buffer size in bytes.
magic	Section magic identifier to search for (e.g. "PLTT", "CHAR").
out_offset	Destination pointer to store the section start offset.
out_size	Destination pointer to store the section size in bytes.

Returns

0 on success; negative value if the section is not found.

Nitro_GetPrintableMagic()

void Nitro_GetPrintableMagic	(	const u8 *	data,
		size_t	size,
		char	out[5]
	)

Safely reads the first 4 bytes of a buffer and formats them as a null-terminated string.

Parameters

data	Data buffer.
size	Data size.
out	Destination char array buffer (must be at least 5 bytes).

Nitro_HasMagic()

int Nitro_HasMagic	(	const u8 *	data,
		size_t	size,
		const char *	magic
	)

Verifies if the buffer starts with the target 4-character magic signature.

Parameters

data	Data buffer pointer.
size	Buffer size in bytes.
magic	4-character format magic string (e.g. "NCLR").

Returns

1 if magic matches; 0 otherwise.

Nitro_ReadS16LE()

s16 Nitro_ReadS16LE

(

const u8 *

p

)

Safely reads a little-endian signed 16-bit value.

Parameters

p	Pointer to byte stream.

Returns

Signed 16-bit integer.

Nitro_ReadS32LE()

s32 Nitro_ReadS32LE

(

const u8 *

p

)

Safely reads a little-endian signed 32-bit value.

Parameters

p	Pointer to byte stream.

Returns

Signed 32-bit integer.