diff options
Diffstat (limited to 'vendor/github.com/PuerkitoBio/goquery/array.go')
| -rw-r--r-- | vendor/github.com/PuerkitoBio/goquery/array.go | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/vendor/github.com/PuerkitoBio/goquery/array.go b/vendor/github.com/PuerkitoBio/goquery/array.go index d7af5ee..1b1f6cb 100644 --- a/vendor/github.com/PuerkitoBio/goquery/array.go +++ b/vendor/github.com/PuerkitoBio/goquery/array.go @@ -4,6 +4,16 @@ import ( "golang.org/x/net/html" ) +const ( + maxUint = ^uint(0) + maxInt = int(maxUint >> 1) + + // ToEnd is a special index value that can be used as end index in a call + // to Slice so that all elements are selected until the end of the Selection. + // It is equivalent to passing (*Selection).Length(). + ToEnd = maxInt +) + // First reduces the set of matched elements to the first in the set. // It returns a new Selection object, and an empty Selection object if the // the selection is empty. @@ -35,12 +45,23 @@ func (s *Selection) Eq(index int) *Selection { } // Slice reduces the set of matched elements to a subset specified by a range -// of indices. +// of indices. The start index is 0-based and indicates the index of the first +// element to select. The end index is 0-based and indicates the index at which +// the elements stop being selected (the end index is not selected). +// +// The indices may be negative, in which case they represent an offset from the +// end of the selection. +// +// The special value ToEnd may be specified as end index, in which case all elements +// until the end are selected. This works both for a positive and negative start +// index. func (s *Selection) Slice(start, end int) *Selection { if start < 0 { start += len(s.Nodes) } - if end < 0 { + if end == ToEnd { + end = len(s.Nodes) + } else if end < 0 { end += len(s.Nodes) } return pushStack(s, s.Nodes[start:end]) |