Struct CsvHandler 

pub struct CsvHandler;

Implementations

impl CsvHandler

pub fn new() -> Self

pub fn read(&self, path: &str) -> Result<String>

pub fn write_from_csv(&self, input_path: &str, output_path: &str) -> Result<()>

pub fn write_records(&self, path: &str, records: Vec<Vec<String>>) -> Result<()>

pub fn read_range( &self, path: &str, range: &CellRange, ) -> Result<Vec<Vec<String>>>

Read a specific range from CSV file

pub fn read_as_json(&self, path: &str) -> Result<String>

Read CSV and return as JSON array

pub fn append_records(&self, path: &str, records: &[Vec<String>]) -> Result<()>

Append records to an existing CSV file (or create if doesn’t exist)

pub fn write_range( &self, path: &str, data: &[Vec<String>], start_row: usize, start_col: usize, ) -> Result<()>

Write data to a specific cell range in CSV

impl CsvHandler

pub fn write_records_safe( &self, path: &str, records: Vec<Vec<String>>, ) -> Result<()>

Write records with CSV injection protection

pub fn append_records_safe( &self, path: &str, records: &[Vec<String>], ) -> Result<()>

Append records with CSV injection protection

Trait Implementations

impl DataReader for CsvHandler

fn read(&self, path: &str) -> Result<Vec<Vec<String>>>

Read all data from a file

fn read_with_headers(&self, path: &str) -> Result<Vec<Vec<String>>>

Read data with headers (first row contains column names)

fn read_range(&self, path: &str, range: &CellRange) -> Result<Vec<Vec<String>>>

Read a specific cell range from a file

fn read_as_json(&self, path: &str) -> Result<String>

Read data as JSON string

fn supports_format(&self, path: &str) -> bool

Check if the file format is supported

impl DataWriter for CsvHandler

fn write( &self, path: &str, data: &[Vec<String>], _options: DataWriteOptions, ) -> Result<()>

Write data to a file

fn write_range( &self, path: &str, data: &[Vec<String>], start_row: usize, start_col: usize, ) -> Result<()>

Write data to a specific cell range

fn append(&self, path: &str, data: &[Vec<String>]) -> Result<()>

Append data to an existing file

fn supports_format(&self, path: &str) -> bool

Check if the file format is supported

impl FileHandler for CsvHandler

fn format_name(&self) -> &'static str

Get the format name (e.g., “csv”, “xlsx”, “parquet”)

fn supported_extensions(&self) -> &'static [&'static str]

Get supported file extensions

impl SchemaProvider for CsvHandler

fn get_schema(&self, path: &str) -> Result<Vec<(String, String)>>

Get schema information from a file

fn get_column_names(&self, path: &str) -> Result<Vec<String>>

Get column names from a file

fn get_row_count(&self, path: &str) -> Result<usize>

Get number of rows in a file

fn get_column_count(&self, path: &str) -> Result<usize>

Get number of columns in a file