Aleph::CsvRow Class Reference

A CSV row with header-based field access. More...

#include <parse-csv.H>

Collaboration diagram for Aleph::CsvRow:

Public Member Functions
	CsvRow (Array< std::string > fields)
	Construct from fields only (no header access).
	CsvRow (Array< std::string > fields, const Array< std::string > &header)
	Construct with header reference for name-based access.
const std::string &	operator[] (size_t index) const
	Get field by index.
const std::string &	operator[] (const std::string &column_name) const
	Get field by column name.
const std::string &	at (size_t index) const
	Get field by index with bounds checking.
bool	has_column (const std::string &column_name) const
	Check if column exists.
template<typename T >
T	get (size_t index) const
	Get field as numeric type.
template<typename T >
T	get (const std::string &column_name) const
	Get field as numeric type by column name.
size_t	size () const
	Get number of fields.
bool	empty () const
	Check if row is empty.
const Array< std::string > &	fields () const
	Get underlying array.
const Array< std::string > *	header () const
	Get column names (if header set).

Private Attributes
Array< std::string >	fields_
const Array< std::string > *	header_

Detailed Description

A CSV row with header-based field access.

CsvRow wraps an Array of strings and provides access to fields by column name in addition to index-based access.

// Parse CSV with header
std::istringstream ss("name,age,city\nAlice,30,NYC\nBob,25,LA");
Array<std::string> header_row = csv_read_row(ss);
 
while (ss.good())
{
  CsvRow row(csv_read_row(ss), header_row);
  if (row.size() == 0) break;
  
  std::cout << row["name"] << " is " << row["age"] << " years old\n";
  // Or use index: row[0], row[1], row[2]
}

Definition at line 600 of file parse-csv.H.

Constructor & Destructor Documentation

CsvRow() [1/2]

Aleph::CsvRow::CsvRow ( Array< std::string >  fields )

inlineexplicit

Construct from fields only (no header access).

Definition at line 607 of file parse-csv.H.

CsvRow() [2/2]

Aleph::CsvRow::CsvRow ( Array< std::string >  fields, const Array< std::string > &  header  )

inline

Construct with header reference for name-based access.

Definition at line 611 of file parse-csv.H.

Member Function Documentation

at()

const std::string & Aleph::CsvRow::at ( size_t  index ) const

inline

Get field by index with bounds checking.

Definition at line 636 of file parse-csv.H.

References fields_, and Aleph::Array< T >::size().

empty()

bool Aleph::CsvRow::empty ( ) const

inline

Check if row is empty.

Definition at line 671 of file parse-csv.H.

References fields_, and Aleph::Array< T >::size().

fields()

const Array< std::string > & Aleph::CsvRow::fields ( ) const

inline

Get underlying array.

Definition at line 674 of file parse-csv.H.

References fields_.

get() [1/2]

template<typename T >

T Aleph::CsvRow::get ( const std::string &  column_name ) const

inline

Get field as numeric type by column name.

Definition at line 662 of file parse-csv.H.

References Aleph::maps().

get() [2/2]

template<typename T >

T Aleph::CsvRow::get ( size_t  index ) const

inline

Get field as numeric type.

Definition at line 655 of file parse-csv.H.

References fields_, and Aleph::maps().

has_column()

bool Aleph::CsvRow::has_column ( const std::string &  column_name ) const

inline

Check if column exists.

Definition at line 644 of file parse-csv.H.

References fields_, header_, Aleph::maps(), and Aleph::Array< T >::size().

header()

const Array< std::string > * Aleph::CsvRow::header ( ) const

inline

Get column names (if header set).

Definition at line 677 of file parse-csv.H.

References header_.

operator[]() [1/2]

const std::string & Aleph::CsvRow::operator[] ( const std::string &  column_name ) const

inline

Get field by column name.

Exceptions

std::runtime_error	If no header is set.
std::out_of_range	If column name not found.

Definition at line 623 of file parse-csv.H.

References fields_, header_, Aleph::maps(), and Aleph::Array< T >::size().

operator[]() [2/2]

const std::string & Aleph::CsvRow::operator[] ( size_t  index ) const

inline

Get field by index.

Definition at line 615 of file parse-csv.H.

References fields_.

size()

size_t Aleph::CsvRow::size ( ) const

inline

Get number of fields.

Definition at line 668 of file parse-csv.H.

References fields_, and Aleph::Array< T >::size().

Member Data Documentation

fields_

Array<std::string> Aleph::CsvRow::fields_

private

Definition at line 602 of file parse-csv.H.

Referenced by at(), empty(), fields(), get(), has_column(), operator[](), operator[](), and size().

header_

const Array<std::string>* Aleph::CsvRow::header_

private

Definition at line 603 of file parse-csv.H.

Referenced by has_column(), header(), and operator[]().

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The documentation for this class was generated from the following file:

• parse-csv.H