package htmlcheck
import (
"fmt"
"regexp"
"sort"
"strings"
"github.com/PuerkitoBio/goquery"
"github.com/gomarkdown/markdown"
"github.com/gomarkdown/markdown/html"
"github.com/gomarkdown/markdown/parser"
)
// RunTests will run all tests on an HTML string
func RunTests(html string) (Response, error) {
s := Response{}
s.Warnings = []Warning{}
if platforms, err := Platforms(); err == nil {
s.Platforms = platforms
}
s.Total = Total{}
// crude way to determine whether the HTML contains a <body> structure
// or whether it's just plain HTML content
re := regexp.MustCompile(`(?im)</body>`)
nodeMatch := "body *, script"
if re.MatchString(html) {
nodeMatch = "*:not(html):not(head):not(meta), script"
}
reader := strings.NewReader(html)
// Load the HTML document
doc, err := goquery.NewDocumentFromReader(reader)
if err != nil {
return s, err
}
// calculate the number of nodes in HTML
s.Total.Nodes = len(doc.Find(nodeMatch).Nodes)
if err := loadJSONData(); err != nil {
return s, err
}
// HTML tests
htmlResults, totalTests, err := runHTMLTests(html)
if err != nil {
return s, err
}
s.Total.Tests = s.Total.Tests + totalTests
// add html test totals
s.Warnings = append(s.Warnings, htmlResults...)
// CSS tests
cssResults, totalTests, err := runCSSTests(html)
if err != nil {
return s, err
}
s.Total.Tests = s.Total.Tests + totalTests
// add css test totals
s.Warnings = append(s.Warnings, cssResults...)
// calculate total score
var partial, unsupported float32
partial = 0
unsupported = 0
for _, w := range s.Warnings {
if w.Score.Found == 0 {
continue
}
// supported is calculated by subtracting partial and unsupported from 100%
if w.Score.Partial > 0 {
weighted := w.Score.Partial * float32(w.Score.Found) / float32(s.Total.Nodes)
if weighted > partial {
partial = weighted
}
}
if w.Score.Unsupported > 0 {
weighted := w.Score.Unsupported * float32(w.Score.Found) / float32(s.Total.Nodes)
if weighted > unsupported {
unsupported = weighted
}
}
}
s.Total.Supported = 100 - partial - unsupported
s.Total.Partial = partial
s.Total.Unsupported = unsupported
// sort slice to get lowest scores first
sort.Slice(s.Warnings, func(i, j int) bool {
return (s.Warnings[i].Score.Unsupported+s.Warnings[i].Score.Partial)*float32(s.Warnings[i].Score.Found)/float32(s.Total.Nodes) >
(s.Warnings[j].Score.Unsupported+s.Warnings[j].Score.Partial)*float32(s.Warnings[j].Score.Found)/float32(s.Total.Nodes)
})
return s, nil
}
// Test returns a test
func (c CanIEmail) getTest(k string) (Warning, error) {
warning := Warning{}
exists := false
found := JSONResult{}
for _, r := range cie.Data {
if r.Slug == k {
found = r
exists = true
break
}
}
if !exists {
return warning, fmt.Errorf("%s does not exist", k)
}
warning.Slug = found.Slug
warning.Title = found.Title
warning.Description = mdToHTML(found.Description)
warning.Category = found.Category
warning.URL = found.URL
warning.Tags = found.Tags
// warning.Keywords = found.Keywords
// warning.Notes = found.Notes
warning.NotesByNumber = make(map[string]string, len(found.NotesByNumber))
for nr, note := range found.NotesByNumber {
warning.NotesByNumber[nr] = mdToHTML(note)
}
warning.Results = []Result{}
var y, n, p float32
for family, stats := range found.Stats {
if len(LimitFamilies) != 0 && !inArray(family, LimitFamilies) {
continue
}
for platform, clients := range stats.(map[string]interface{}) {
if len(LimitPlatforms) != 0 && !inArray(platform, LimitPlatforms) {
continue
}
for version, support := range clients.(map[string]interface{}) {
s := Result{}
s.Name = fmt.Sprintf("%s %s (%s)", c.NiceNames.Family[family], c.NiceNames.Platform[platform], version)
s.Family = family
s.Platform = platform
s.Version = version
if support == "y" {
y++
s.Support = "yes"
} else if support == "n" {
n++
s.Support = "no"
} else {
p++
s.Support = "partial"
noteIDS := noteMatch.FindStringSubmatch(fmt.Sprintf("%s", support))
for _, id := range noteIDS {
s.NoteNumber = id
}
}
warning.Results = append(warning.Results, s)
}
}
}
total := y + n + p
warning.Score.Supported = y / total * 100
warning.Score.Unsupported = n / total * 100
warning.Score.Partial = p / total * 100
return warning, nil
}
func inArray(n string, h []string) bool {
n = strings.ToLower(n)
for _, v := range h {
if strings.ToLower(v) == n {
return true
}
}
return false
}
// Convert markdown to HTML, stripping <p> & </p>
func mdToHTML(str string) string {
md := []byte(str)
// create markdown parser with extensions
extensions := parser.CommonExtensions | parser.AutoHeadingIDs | parser.NoEmptyLineBeforeBlock
// extensions := parser.NoExtensions
p := parser.NewWithExtensions(extensions)
doc := p.Parse(md)
// create HTML renderer with extensions
htmlFlags := html.CommonFlags | html.HrefTargetBlank
opts := html.RendererOptions{Flags: htmlFlags}
renderer := html.NewRenderer(opts)
return strings.TrimSuffix(strings.TrimPrefix(strings.TrimSpace(string(markdown.Render(doc, renderer))), "<p>"), "</p>")
}