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package cache
import (
"github.com/MichaelMure/git-bug/bug"
)
// Filter is a functor that match a subset of bugs
type Filter func(excerpt *BugExcerpt) bool
// StatusFilter return a Filter that match a bug status
func StatusFilter(query string) (Filter, error) {
status, err := bug.StatusFromString(query)
if err != nil {
return nil, err
}
return func(excerpt *BugExcerpt) bool {
return excerpt.Status == status
}, nil
}
// AuthorFilter return a Filter that match a bug author
func AuthorFilter(query string) Filter {
return func(excerpt *BugExcerpt) bool {
return excerpt.Author.Match(query)
}
}
// LabelFilter return a Filter that match a label
func LabelFilter(label string) Filter {
return func(excerpt *BugExcerpt) bool {
for _, l := range excerpt.Labels {
if string(l) == label {
return true
}
}
return false
}
}
// NoLabelFilter return a Filter that match the absence of labels
func NoLabelFilter() Filter {
return func(excerpt *BugExcerpt) bool {
return len(excerpt.Labels) == 0
}
}
// Filters is a collection of Filter that implement a complex filter
type Filters struct {
Status []Filter
Author []Filter
Label []Filter
NoFilters []Filter
}
// Match check if a bug match the set of filters
func (f *Filters) Match(excerpt *BugExcerpt) bool {
if match := f.orMatch(f.Status, excerpt); !match {
return false
}
if match := f.orMatch(f.Author, excerpt); !match {
return false
}
if match := f.orMatch(f.Label, excerpt); !match {
return false
}
if match := f.andMatch(f.NoFilters, excerpt); !match {
return false
}
return true
}
// Check if any of the filters provided match the bug
func (*Filters) orMatch(filters []Filter, excerpt *BugExcerpt) bool {
if len(filters) == 0 {
return true
}
match := false
for _, f := range filters {
match = match || f(excerpt)
}
return match
}
// Check if all of the filters provided match the bug
func (*Filters) andMatch(filters []Filter, excerpt *BugExcerpt) bool {
if len(filters) == 0 {
return true
}
match := true
for _, f := range filters {
match = match && f(excerpt)
}
return match
}
|
