func buildFilter()

in internal/config/config.go [971:1102]
123 lines of code
48 McCabe index (conditional complexity)

func buildFilter(tbl *ast.Table) (models.Filter, error) {
	f := models.Filter{}

	if node, ok := tbl.Fields["namepass"]; ok {
		if kv, ok := node.(*ast.KeyValue); ok {
			if ary, ok := kv.Value.(*ast.Array); ok {
				for _, elem := range ary.Value {
					if str, ok := elem.(*ast.String); ok {
						f.NamePass = append(f.NamePass, str.Value)
					}
				}
			}
		}
	}

	if node, ok := tbl.Fields["namedrop"]; ok {
		if kv, ok := node.(*ast.KeyValue); ok {
			if ary, ok := kv.Value.(*ast.Array); ok {
				for _, elem := range ary.Value {
					if str, ok := elem.(*ast.String); ok {
						f.NameDrop = append(f.NameDrop, str.Value)
					}
				}
			}
		}
	}

	fields := []string{"pass", "fieldpass"}
	for _, field := range fields {
		if node, ok := tbl.Fields[field]; ok {
			if kv, ok := node.(*ast.KeyValue); ok {
				if ary, ok := kv.Value.(*ast.Array); ok {
					for _, elem := range ary.Value {
						if str, ok := elem.(*ast.String); ok {
							f.FieldPass = append(f.FieldPass, str.Value)
						}
					}
				}
			}
		}
	}

	fields = []string{"drop", "fielddrop"}
	for _, field := range fields {
		if node, ok := tbl.Fields[field]; ok {
			if kv, ok := node.(*ast.KeyValue); ok {
				if ary, ok := kv.Value.(*ast.Array); ok {
					for _, elem := range ary.Value {
						if str, ok := elem.(*ast.String); ok {
							f.FieldDrop = append(f.FieldDrop, str.Value)
						}
					}
				}
			}
		}
	}

	if node, ok := tbl.Fields["tagpass"]; ok {
		if subtbl, ok := node.(*ast.Table); ok {
			for name, val := range subtbl.Fields {
				if kv, ok := val.(*ast.KeyValue); ok {
					tagfilter := &models.TagFilter{Name: name}
					if ary, ok := kv.Value.(*ast.Array); ok {
						for _, elem := range ary.Value {
							if str, ok := elem.(*ast.String); ok {
								tagfilter.Filter = append(tagfilter.Filter, str.Value)
							}
						}
					}
					f.TagPass = append(f.TagPass, *tagfilter)
				}
			}
		}
	}

	if node, ok := tbl.Fields["tagdrop"]; ok {
		if subtbl, ok := node.(*ast.Table); ok {
			for name, val := range subtbl.Fields {
				if kv, ok := val.(*ast.KeyValue); ok {
					tagfilter := &models.TagFilter{Name: name}
					if ary, ok := kv.Value.(*ast.Array); ok {
						for _, elem := range ary.Value {
							if str, ok := elem.(*ast.String); ok {
								tagfilter.Filter = append(tagfilter.Filter, str.Value)
							}
						}
					}
					f.TagDrop = append(f.TagDrop, *tagfilter)
				}
			}
		}
	}

	if node, ok := tbl.Fields["tagexclude"]; ok {
		if kv, ok := node.(*ast.KeyValue); ok {
			if ary, ok := kv.Value.(*ast.Array); ok {
				for _, elem := range ary.Value {
					if str, ok := elem.(*ast.String); ok {
						f.TagExclude = append(f.TagExclude, str.Value)
					}
				}
			}
		}
	}

	if node, ok := tbl.Fields["taginclude"]; ok {
		if kv, ok := node.(*ast.KeyValue); ok {
			if ary, ok := kv.Value.(*ast.Array); ok {
				for _, elem := range ary.Value {
					if str, ok := elem.(*ast.String); ok {
						f.TagInclude = append(f.TagInclude, str.Value)
					}
				}
			}
		}
	}
	if err := f.Compile(); err != nil {
		return f, err
	}

	delete(tbl.Fields, "namedrop")
	delete(tbl.Fields, "namepass")
	delete(tbl.Fields, "fielddrop")
	delete(tbl.Fields, "fieldpass")
	delete(tbl.Fields, "drop")
	delete(tbl.Fields, "pass")
	delete(tbl.Fields, "tagdrop")
	delete(tbl.Fields, "tagpass")
	delete(tbl.Fields, "tagexclude")
	delete(tbl.Fields, "taginclude")
	return f, nil
}