88 lines
2.3 KiB
Go
88 lines
2.3 KiB
Go
package digest
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import (
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"fmt"
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"github.com/fthvgb1/wp-go/helper/html"
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"github.com/fthvgb1/wp-go/helper/slice"
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"regexp"
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"strings"
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"unicode/utf8"
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)
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var removeWpBlock = regexp.MustCompile("<!-- /?wp:.*-->")
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var more = regexp.MustCompile("<!--more(.*?)?-->")
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var quto = regexp.MustCompile(`" *|& *|< *|> ?| *`)
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func ClearHtml(str string) string {
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content := removeWpBlock.ReplaceAllString(str, "")
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content = strings.Trim(content, " \t\n\r\000\x0B")
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content = strings.Replace(content, "]]>", "]]>", -1)
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content = html.StripTagsX(content, "<a><b><blockquote><br><cite><code><dd><del><div><dl><dt><em><h1><h2><h3><h4><h5><h6><i><img><li><ol><p><pre><span><strong><ul>")
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return str
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}
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func Raw(str string, limit int, u string) string {
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if r := more.FindString(str); r != "" {
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m := strings.Split(str, r)
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str = m[0]
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return ""
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}
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content := removeWpBlock.ReplaceAllString(str, "")
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content = strings.Trim(content, " \t\n\r\000\x0B")
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content = strings.Replace(content, "]]>", "]]>", -1)
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content = html.StripTagsX(content, "<a><b><blockquote><br><cite><code><dd><del><div><dl><dt><em><h1><h2><h3><h4><h5><h6><i><img><li><ol><p><pre><span><strong><ul>")
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length := utf8.RuneCountInString(content) + 1
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if length > limit {
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index := quto.FindAllStringIndex(content, -1)
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end := 0
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ru := []rune(content)
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tagIn := false
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total := len(ru)
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l, r := '<', '>'
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i := -1
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for {
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i++
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for len(index) > 0 {
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ints := slice.Map(index[0], func(t int) int {
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return utf8.RuneCountInString(content[:t])
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})
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if ints[0] <= i {
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i = i + i - ints[0] + ints[1] - ints[0]
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index = index[1:]
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end++
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continue
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} else {
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break
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}
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}
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if end >= limit || i >= total-1 {
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break
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}
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if ru[i] == l {
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tagIn = true
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continue
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} else if ru[i] == r {
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tagIn = false
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continue
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}
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if tagIn == false {
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end++
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}
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}
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if i > total-1 {
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i = total - 1
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}
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content = string(ru[:i])
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closeTag := html.CloseTag(content)
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tmp := `%s......%s<p class="read-more"><a href="%s">继续阅读</a></p>`
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if strings.Contains(closeTag, "pre") || strings.Contains(closeTag, "code") {
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tmp = `%s%s......<p class="read-more"><a href="%s">继续阅读</a></p>`
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}
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content = fmt.Sprintf(tmp, content, closeTag, u)
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}
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return content
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}
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