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xpath.go
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xpath.go
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package safer
import (
"strings"
"github.com/antchfx/htmlquery"
"golang.org/x/net/html"
)
// company snapshot xpath constants
const (
snapshotNotFoundXpath = "/html/head/title[text()='SAFER Web - Company Snapshot RECORD NOT FOUND' or text()='SAFER Web - Company Snapshot RECORD INACTIVE']"
srcTableXpath = "/html/body/p/table/tbody/tr[2]/td/table/tbody/tr[2]/td"
latestUpdateDateXpath = "/table/tbody/tr[3]/td/font/b[3]/font/text()"
tableGeneralInfoXpath = "/center[1]/table/tbody"
tableOperationClassXpath = "/tr[14]/td/table/tbody/tr[2]/td/table/tbody/tr[.//td[@class='queryfield']/text() = 'X']"
tableCarrierOpXpath = "/tr[16]/td/table/tbody/tr[2]/td/table/tbody/tr[.//td[@class='queryfield']/text() = 'X']/td/font/text()"
tableCargoCarriedXpath = "/tr[19]/td/table/tbody/tr[2]/td/table/tbody/tr[.//td[@class='queryfield']/text() = 'X']"
tableUSInspectionXpath = "/center[3]/table/tbody/tr"
tableUSCrashXpath = "/center[4]/table/tbody/tr[2]/td/text()"
tableCanadaInspectionXpath = "/center[6]/table/tbody/tr"
tableCanadaCrashXpath = "/center[7]/table/tbody/tr[2]/td/text()"
tableSafetyRatingXpath = "/center[9]/table/tbody/tr"
)
// company search xpath constants
const (
companyResultXpath = "/html/body/table[3]/tbody/tr[.//*[@scope='rpw']]"
)
func htmlNodeToCompanySnapshot(root *html.Node) (*CompanySnapshot, error) {
if found := htmlquery.Find(root, snapshotNotFoundXpath); found != nil && len(found) > 0 {
return nil, ErrCompanyNotFound
}
snapshot := new(CompanySnapshot)
if srcNode := htmlquery.FindOne(root, srcTableXpath); srcNode != nil {
snapshot.LatestUpdateDate = parseDate(getNodeText(srcNode, latestUpdateDateXpath))
// general info
if node := htmlquery.FindOne(srcNode, tableGeneralInfoXpath); node != nil {
snapshot.EntityType = getNodeText(node, "/tr[2]/td/text()")
if tr3 := htmlquery.FindOne(node, "/tr[3]"); tr3 != nil {
snapshot.OutOfServiceDate = parseDate(getNodeText(tr3, "/td[2]/text()"))
snapshot.OperatingStatus = getNodeText(tr3, "/td[1]/text()")
if snapshot.OperatingStatus == "" {
// out-of-service is bolded and not caught by the previous xpath
snapshot.OperatingStatus = getNodeText(tr3, "/td[1]/font/b/text()")
}
}
snapshot.LegalName = getNodeText(node, "/tr[4]/td/text()")
snapshot.DBAName = getNodeText(node, "/tr[5]/td/text()")
snapshot.PhysicalAddress = parseAddress(getNodeTexts(node, "/tr[6]/td/text()")...)
snapshot.Phone = getNodeText(node, "/tr[7]/td/text()")
snapshot.MailingAddress = parseAddress(getNodeTexts(node, "/tr[8]/td/text()")...)
if tr9 := htmlquery.FindOne(node, "/tr[9]"); tr9 != nil {
snapshot.DOTNumber = getNodeText(tr9, "/td[1]/text()")
snapshot.StateCarrierID = getNodeText(tr9, "/td[2]/text()")
}
if tr10 := htmlquery.FindOne(node, "/tr[10]"); tr10 != nil {
snapshot.MCMXFFNumbers = getNodeTexts(tr10, "/td[1]/a/text()")
snapshot.DUNSNumber = getNodeText(tr10, "/td[2]/text()")
if snapshot.DUNSNumber == "--" {
snapshot.DUNSNumber = ""
}
}
if tr11 := htmlquery.FindOne(node, "/tr[11]"); tr11 != nil {
snapshot.PowerUnits = parseInt(getNodeText(tr11, "/td[1]/text()"))
snapshot.Drivers = parseInt(getNodeText(tr11, "/td[2]/font/b/text()"))
}
if tr12 := htmlquery.FindOne(node, "/tr[12]"); tr12 != nil {
snapshot.MCS150FormDate = parseDate(getNodeText(tr12, "/td[1]/text()"))
snapshot.MCS150Mileage, snapshot.MCS150Year = parseMCS150MileageYear(getNodeText(tr12, "/td[2]/font/b/text()"))
}
// carrier classification
for _, classNode := range htmlquery.Find(node, tableOperationClassXpath) {
classification := getNodeText(classNode, "/td/font/text()")
if classification == "" {
// optional extra classifications (not all will have this)
classification = getNodeText(classNode, "/td[2]/text()")
}
if classification != "" {
snapshot.OperationClassification = append(snapshot.OperationClassification, classification)
}
}
// carrier operation
operations := getNodeTexts(node, tableCarrierOpXpath)
for _, op := range operations {
snapshot.CarrierOperation = append(snapshot.CarrierOperation, op)
}
// cargo carried
for _, cargoNode := range htmlquery.Find(node, tableCargoCarriedXpath) {
cargo := getNodeText(cargoNode, "/td/font/text()")
if cargo == "" {
// optional extra classifications (not all will have this)
cargo = getNodeText(cargoNode, "/td[2]/text()")
}
if cargo != "" {
snapshot.CargoCarried = append(snapshot.CargoCarried, cargo)
}
}
}
// us inspections
if nodes := htmlquery.Find(srcNode, tableUSInspectionXpath); nodes != nil {
// tr[2]
snapshot.USVehicleInspections.Inspections = parseInt(getNodeText(nodes[1], "/td[1]/text()"))
snapshot.USDriverInspections.Inspections = parseInt(getNodeText(nodes[1], "/td[2]/text()"))
snapshot.USHazmatInspections.Inspections = parseInt(getNodeText(nodes[1], "/td[3]/text()"))
snapshot.USIEPInspections.Inspections = parseInt(getNodeText(nodes[1], "/td[4]/text()"))
// tr[3]
snapshot.USVehicleInspections.OutOfService = parseInt(getNodeText(nodes[2], "/td[1]/text()"))
snapshot.USDriverInspections.OutOfService = parseInt(getNodeText(nodes[2], "/td[2]/text()"))
snapshot.USHazmatInspections.OutOfService = parseInt(getNodeText(nodes[2], "/td[3]/text()"))
snapshot.USIEPInspections.OutOfService = parseInt(getNodeText(nodes[2], "/td[4]/text()"))
// tr[4]
snapshot.USVehicleInspections.OutOfServicePct = parsePctToFloat32(getNodeText(nodes[3], "/td[1]/text()"))
snapshot.USDriverInspections.OutOfServicePct = parsePctToFloat32(getNodeText(nodes[3], "/td[2]/text()"))
snapshot.USHazmatInspections.OutOfServicePct = parsePctToFloat32(getNodeText(nodes[3], "/td[3]/text()"))
snapshot.USIEPInspections.OutOfServicePct = parsePctToFloat32(getNodeText(nodes[3], "/td[4]/text()"))
// tr[5]
snapshot.USVehicleInspections.NationalAverage = parsePctToFloat32(getNodeText(nodes[4], "/td[1]/font/text()"))
snapshot.USDriverInspections.NationalAverage = parsePctToFloat32(getNodeText(nodes[4], "/td[2]/font/text()"))
snapshot.USHazmatInspections.NationalAverage = parsePctToFloat32(getNodeText(nodes[4], "/td[3]/font/text()"))
snapshot.USIEPInspections.NationalAverage = parsePctToFloat32(getNodeText(nodes[4], "/td[4]/font/text()"))
}
// us crash
if nodes := htmlquery.Find(srcNode, tableUSCrashXpath); nodes != nil {
snapshot.USCrashes.Fatal = parseInt(strings.TrimSpace(nodes[0].Data))
snapshot.USCrashes.Injury = parseInt(strings.TrimSpace(nodes[1].Data))
snapshot.USCrashes.Tow = parseInt(strings.TrimSpace(nodes[2].Data))
snapshot.USCrashes.Total = parseInt(strings.TrimSpace(nodes[3].Data))
}
// canada inspection
if nodes := htmlquery.Find(srcNode, tableCanadaInspectionXpath); nodes != nil {
snapshot.CanadaVehicleInspections.Inspections = parseInt(getNodeText(nodes[1], "/td[1]/text()"))
snapshot.CanadaDriverInspections.Inspections = parseInt(getNodeText(nodes[1], "/td[2]/text()"))
snapshot.CanadaVehicleInspections.OutOfService = parseInt(getNodeText(nodes[2], "/td[1]/text()"))
snapshot.CanadaDriverInspections.OutOfService = parseInt(getNodeText(nodes[2], "/td[2]/text()"))
snapshot.CanadaVehicleInspections.OutOfServicePct = parsePctToFloat32(getNodeText(nodes[3], "/td[1]/text()"))
snapshot.CanadaDriverInspections.OutOfServicePct = parsePctToFloat32(getNodeText(nodes[3], "/td[2]/text()"))
}
// canada crash
if nodes := htmlquery.Find(srcNode, tableCanadaCrashXpath); nodes != nil {
snapshot.CanadaCrashes.Fatal = parseInt(strings.TrimSpace(nodes[0].Data))
snapshot.CanadaCrashes.Injury = parseInt(strings.TrimSpace(nodes[1].Data))
snapshot.CanadaCrashes.Tow = parseInt(strings.TrimSpace(nodes[2].Data))
snapshot.CanadaCrashes.Total = parseInt(strings.TrimSpace(nodes[3].Data))
}
// safety rating
if nodes := htmlquery.Find(srcNode, tableSafetyRatingXpath); nodes != nil {
if tr2 := htmlquery.Find(nodes[1], "/td/text()"); tr2 != nil {
snapshot.Safety.RatingDate = parseDate(strings.TrimSpace(tr2[0].Data))
snapshot.Safety.ReviewDate = parseDate(strings.TrimSpace(tr2[1].Data))
}
if tr3 := htmlquery.Find(nodes[2], "/td/text()"); tr3 != nil {
snapshot.Safety.Rating = strings.TrimSpace(tr3[0].Data)
snapshot.Safety.Type = strings.TrimSpace(tr3[1].Data)
}
}
}
return snapshot, nil
}
func htmlNodeToCompanyResults(node *html.Node) ([]CompanyResult, error) {
resultNodes := htmlquery.Find(node, companyResultXpath)
if resultNodes == nil || len(resultNodes) == 0 {
return []CompanyResult{}, nil
}
companyResults := make([]CompanyResult, len(resultNodes), len(resultNodes))
for i, n := range resultNodes {
companyResults[i] = companyResultFromNode(n)
}
return companyResults, nil
}
func companyResultFromNode(n *html.Node) CompanyResult {
res := CompanyResult{
Location: getNodeText(n, "/td/b/text()"),
}
if node := htmlquery.FindOne(n, "/th/b/a"); node != nil {
res.Name = htmlquery.InnerText(node)
res.DOTNumber = parseDotFromSearchParams(htmlquery.SelectAttr(node, "href"))
}
return res
}
func getNodeText(node *html.Node, path string) string {
child := htmlquery.FindOne(node, path)
if child == nil {
return ""
}
return strings.TrimSpace(child.Data)
}
func getNodeTexts(node *html.Node, path string) []string {
children := htmlquery.Find(node, path)
if children == nil || len(children) == 0 {
return []string{}
}
out := make([]string, len(children), len(children))
for i, child := range children {
out[i] = strings.TrimSpace(child.Data)
}
return out
}