/
CompareItemWriting.go
93 lines (78 loc) · 2.36 KB
/
CompareItemWriting.go
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package reports
import (
"encoding/csv"
"fmt"
"html"
"strconv"
"strings"
"github.com/nsip/dev-nrt/records"
"github.com/tidwall/sjson"
)
type CompareItemWriting struct {
baseReport // embed common setup capability
}
//
// Simplified version of writing extract, shows writing item and response
// with some student info.
//
func CompareItemWritingReport() *CompareItemWriting {
r := CompareItemWriting{}
r.initialise("./config/CompareItemWriting.toml")
r.printStatus()
return &r
}
//
// implement the EventPipe interface, core work of the
// report engine.
//
func (r *CompareItemWriting) ProcessEventRecords(in chan *records.EventOrientedRecord) chan *records.EventOrientedRecord {
out := make(chan *records.EventOrientedRecord)
go func() {
defer close(out)
// open the csv file writer, and set the header
w := csv.NewWriter(r.outF)
defer r.outF.Close()
w.Write(r.config.header)
defer w.Flush()
for eor := range in {
if r.config.activated { // only process if active
if eor.IsWritingResponse() { // only process writing responses
//
// generate any calculated fields required
//
eor.CalculatedFields = r.calculateFields(eor)
//
// now loop through the ouput definitions to create a
// row of results
//
var result string
var row []string = make([]string, 0, len(r.config.queries))
for _, query := range r.config.queries {
result = eor.GetValueString(query)
row = append(row, result)
}
// write the row to the output file
if err := w.Write(row); err != nil {
fmt.Println("Warning: error writing record to csv:", r.config.name, err)
}
}
}
out <- eor
}
}()
return out
}
//
// generates a block of json that can be added to the
// record containing values that are not in the original data
//
//
func (we *CompareItemWriting) calculateFields(eor *records.EventOrientedRecord) []byte {
ir := eor.GetValueString("NAPStudentResponseSet.TestletList.Testlet.0.ItemResponseList.ItemResponse.0.Response")
ir = html.UnescapeString(ir) // html of writing response needs unescaping
wc := strconv.Itoa(countwords(strings.Replace(strings.Replace(ir, "\\n", "\n", -1), "\\r", "\r", -1)))
json := eor.CalculatedFields
json, _ = sjson.SetBytes(json, "CalculatedFields.WordCount", wc)
json, _ = sjson.SetBytes(json, "CalculatedFields.EscapedResponse", ir)
return json
}