CGAL 6.2 - IO Streams

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CGAL::IO::Basic_indenting_streambuf< CharT, Traits > Class Template Reference
Reference Manual

`#include <CGAL/IO/Indenting_ostream.h>`

## Inherits from

std::basic_streambuf< CharT, std::char_traits< CharT > >, and std::char_traits< CharT >.

## Definition

template<typename CharT, typename Traits = std::char_traits<CharT>>
class CGAL::IO::Basic_indenting_streambuf< CharT, Traits >

The class template `Basic_indenting_streambuf` wraps another `basic_streambuf` and automatically adds indentation at the beginning of each line.

This is useful for formatting debug output with consistent indentation levels.

Template Parameters

  CharT | Character type (typically `char` or `wchar_t`)
  Traits | Character traits type

See also
  Basic_indenting_stream_guard
  make_indenting_guards

Examples
  Stream_support/indenting_ostream.cpp.

## Public Types
using | char_type = CharT
| Character type.
using | traits_type = Traits
| Character traits type.
using | int_type = typename traits_type::int_type
| Integer type for character representation.
using | pos_type = typename traits_type::pos_type
| Position type for stream positioning.
using | off_type = typename traits_type::off_type
| Offset type for stream positioning.
using | streambuf_type = std::basic_streambuf< char_type, traits_type >
| Type of the wrapped streambuf.
using | string = std::basic_string< char_type >
| String type matching character type.

## Public Member Functions
| Basic_indenting_streambuf (streambuf_type &wrapped_buf, const string &indent_string={2, char_type(' ')})
| constructs an indenting streambuf wrapper.
const string & | indent_string () const
| gets the current indentation string.
void | set_indent_string (const string &new_indent)
| sets a new indentation string.
void | set_indent_level (int level, int spaces_per_level=2)
| sets indentation level using repeated spaces.
streambuf_type & | wrapped_streambuf () const
| gets the wrapped streambuf.

## Constructor & Destructor Documentation

## ◆ Basic_indenting_streambuf()

template<typename CharT , typename Traits = std::char_traits<CharT>>

CGAL::IO::Basic_indenting_streambuf< CharT, Traits >::Basic_indenting_streambuf | ( | streambuf_type & | wrapped_buf,
|  | const string & | indent_string = `{2, char_type(' ')}`
| ) |  |
| explicit

constructs an indenting streambuf wrapper.

Parameters

  wrapped_buf | The underlying streambuf to wrap
  indent_string | The string to use for indentation (default: 2 spaces)

## Member Function Documentation

## ◆ set_indent_level()

template<typename CharT , typename Traits = std::char_traits<CharT>>

void CGAL::IO::Basic_indenting_streambuf< CharT, Traits >::set_indent_level | ( | int | level,
|  | int | spaces_per_level = `2`
| ) |  |

sets indentation level using repeated spaces.

Parameters

  level | Number of indentation levels
  spaces_per_level | Number of spaces per level (default: 2)

## ◆ set_indent_string()

template<typename CharT , typename Traits = std::char_traits<CharT>>

void CGAL::IO::Basic_indenting_streambuf< CharT, Traits >::set_indent_string | ( | const string & | new_indent | ) |

sets a new indentation string.

Parameters

  new_indent | The new indentation string