c4::yml::detail Namespace Reference

a CRTP base providing read-only methods for ConstNodeRef and NodeRef More...

Classes
struct	RoNodeMethods

Functions
csubstr	_get_text_region (csubstr text, size_t pos, size_t num_lines_before, size_t num_lines_after)

Detailed Description

a CRTP base providing read-only methods for ConstNodeRef and NodeRef

Function Documentation

_get_text_region()

csubstr c4::yml::detail::_get_text_region	(	csubstr	text,
		size_t	pos,
		size_t	num_lines_before,
		size_t	num_lines_after )

Definition at line 283 of file common.cpp.

{
    if(pos > text.len)
        return text.last(0);
    size_t before = text.first(pos).last_of('\n');
    size_t before_count = 0;
    while((before != npos) && (++before_count <= num_lines_before))
    {
        if(before == 0)
            break;
        before = text.first(--before).last_of('\n');
    }
    if(before < text.len || before == npos)
        ++before;
    size_t after = text.first_of('\n', pos);
    size_t after_count = 0;
    while((after != npos) && (++after_count <= num_lines_after))
    {
        ++after;
        if(after >= text.len)
            break;
        after = text.first_of('\n', after);
    }
    return before <= after ? text.range(before, after) : text.first(0);
}