diff options
Diffstat (limited to 'vendor/github.com/a-h/templ/scripttemplate.go')
| -rw-r--r-- | vendor/github.com/a-h/templ/scripttemplate.go | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/vendor/github.com/a-h/templ/scripttemplate.go b/vendor/github.com/a-h/templ/scripttemplate.go deleted file mode 100644 index 0aafa0b..0000000 --- a/vendor/github.com/a-h/templ/scripttemplate.go +++ /dev/null @@ -1,151 +0,0 @@ -package templ - -import ( - "context" - "encoding/json" - "fmt" - "html" - "io" - "regexp" - "strings" -) - -// ComponentScript is a templ Script template. -type ComponentScript struct { - // Name of the script, e.g. print. - Name string - // Function to render. - Function string - // Call of the function in JavaScript syntax, including parameters, and - // ensures parameters are HTML escaped; useful for injecting into HTML - // attributes like onclick, onhover, etc. - // - // Given: - // functionName("some string",12345) - // It would render: - // __templ_functionName_sha("some string",12345)) - // - // This is can be injected into HTML attributes: - // <button onClick="__templ_functionName_sha("some string",12345))">Click Me</button> - Call string - // Call of the function in JavaScript syntax, including parameters. It - // does not HTML escape parameters; useful for directly calling in script - // elements. - // - // Given: - // functionName("some string",12345) - // It would render: - // __templ_functionName_sha("some string",12345)) - // - // This is can be used to call the function inside a script tag: - // <script>__templ_functionName_sha("some string",12345))</script> - CallInline string -} - -var _ Component = ComponentScript{} - -func writeScriptHeader(ctx context.Context, w io.Writer) (err error) { - var nonceAttr string - if nonce := GetNonce(ctx); nonce != "" { - nonceAttr = " nonce=\"" + EscapeString(nonce) + "\"" - } - _, err = fmt.Fprintf(w, `<script%s>`, nonceAttr) - return err -} - -func (c ComponentScript) Render(ctx context.Context, w io.Writer) error { - err := RenderScriptItems(ctx, w, c) - if err != nil { - return err - } - if len(c.Call) > 0 { - if err = writeScriptHeader(ctx, w); err != nil { - return err - } - if _, err = io.WriteString(w, c.CallInline); err != nil { - return err - } - if _, err = io.WriteString(w, `</script>`); err != nil { - return err - } - } - return nil -} - -// RenderScriptItems renders a <script> element, if the script has not already been rendered. -func RenderScriptItems(ctx context.Context, w io.Writer, scripts ...ComponentScript) (err error) { - if len(scripts) == 0 { - return nil - } - _, v := getContext(ctx) - sb := new(strings.Builder) - for _, s := range scripts { - if !v.hasScriptBeenRendered(s.Name) { - sb.WriteString(s.Function) - v.addScript(s.Name) - } - } - if sb.Len() > 0 { - if err = writeScriptHeader(ctx, w); err != nil { - return err - } - if _, err = io.WriteString(w, sb.String()); err != nil { - return err - } - if _, err = io.WriteString(w, `</script>`); err != nil { - return err - } - } - return nil -} - -// JSExpression represents a JavaScript expression intended for use as an argument for script templates. -// The string value of JSExpression will be inserted directly as JavaScript code in function call arguments. -type JSExpression string - -// SafeScript encodes unknown parameters for safety for inside HTML attributes. -func SafeScript(functionName string, params ...any) string { - if !jsFunctionName.MatchString(functionName) { - functionName = "__templ_invalid_js_function_name" - } - sb := new(strings.Builder) - sb.WriteString(html.EscapeString(functionName)) - sb.WriteRune('(') - for i, p := range params { - sb.WriteString(EscapeString(jsonEncodeParam(p))) - if i < len(params)-1 { - sb.WriteRune(',') - } - } - sb.WriteRune(')') - return sb.String() -} - -// SafeScript encodes unknown parameters for safety for inline scripts. -func SafeScriptInline(functionName string, params ...any) string { - if !jsFunctionName.MatchString(functionName) { - functionName = "__templ_invalid_js_function_name" - } - sb := new(strings.Builder) - sb.WriteString(functionName) - sb.WriteRune('(') - for i, p := range params { - sb.WriteString(jsonEncodeParam(p)) - if i < len(params)-1 { - sb.WriteRune(',') - } - } - sb.WriteRune(')') - return sb.String() -} - -func jsonEncodeParam(param any) string { - if val, ok := param.(JSExpression); ok { - return string(val) - } - enc, _ := json.Marshal(param) - return string(enc) -} - -// isValidJSFunctionName returns true if the given string is a valid JavaScript function name, e.g. console.log, alert, etc. -var jsFunctionName = regexp.MustCompile(`^([$_a-zA-Z][$_a-zA-Z0-9]+\.?)+$`) |