mirror of https://github.com/golang/go.git
Snapshot:
- fixed html tag generation - simplified html escaping machinery (not 100% correct for strings yet) - can now produce the first mostly correct formatted html pages from source with (fake) links: e.g. pretty -html srcfile.go > srcfile.html R=r OCL=20915 CL=20915
This commit is contained in:
Robert Griesemer
parent
e956429166
commit
4873bb217c
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@ -37,7 +37,7 @@ parser.6: scanner.6 ast.6
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platform.6: utils.6
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printer.6: scanner.6 ast.6 htmlwriter.6
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printer.6: scanner.6 ast.6
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%.6: %.go
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$(G) $(F) $<
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@ -1,69 +0,0 @@
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package htmlwriter
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import (
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"os";
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"io";
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"fmt";
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)
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// Writer is a filter implementing the io.Write interface.
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// It provides facilities to generate HTML tags and does
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// HTML-escaping for text written through Write. Incoming
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// text is assumed to be UTF-8 encoded.
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export type Writer struct {
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// TODO should not export any of the fields
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writer io.Write;
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}
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func (b *Writer) Init(writer io.Write) *Writer {
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b.writer = writer;
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return b;
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}
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/* export */ func (p *Writer) Write(buf *[]byte) (written int, err *os.Error) {
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i0 := 0;
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for i := i0; i < len(buf); i++ {
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var s string;
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switch buf[i] {
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case '<': s = "<";
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case '&': s = "&";
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default: continue;
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}
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// write HTML escape instead of buf[i]
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w1, e1 := p.writer.Write(buf[i0 : i]);
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if e1 != nil {
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return i0 + w1, e1;
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}
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w2, e2 := io.WriteString(p.writer, s);
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if e2 != nil {
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return i0 + w1 /* not w2! */, e2;
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}
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i0 = i + 1;
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}
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written, err = p.writer.Write(buf[i0 : len(buf)]);
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return len(buf), err;
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}
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// ----------------------------------------------------------------------------
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// HTML-specific interface
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/* export */ func (p *Writer) Tag(s string) {
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// TODO proper error handling
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io.WriteString(p.writer, s);
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}
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// ----------------------------------------------------------------------------
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//
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export func New(writer io.Write) *Writer {
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return new(Writer).Init(writer);
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}
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@ -11,7 +11,6 @@ import (
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"tabwriter";
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"flag";
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"fmt";
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"htmlwriter";
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Scanner "scanner";
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AST "ast";
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)
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@ -57,7 +56,6 @@ const (
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type Printer struct {
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// output
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text io.Write;
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tags *htmlwriter.Writer;
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// comments
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comments *array.Array; // the list of all comments
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@ -94,10 +92,9 @@ func (P *Printer) NextComment() {
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}
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func (P *Printer) Init(text io.Write, tags *htmlwriter.Writer, comments *array.Array) {
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func (P *Printer) Init(text io.Write, comments *array.Array) {
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// writers
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P.text = text;
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P.tags = tags;
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// comments
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P.comments = comments;
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@ -111,6 +108,22 @@ func (P *Printer) Init(text io.Write, tags *htmlwriter.Writer, comments *array.A
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// ----------------------------------------------------------------------------
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// Printing support
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func HtmlEscape(s string) string {
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if html.BVal() {
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var esc string;
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for i := 0; i < len(s); i++ {
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switch s[i] {
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case '<': esc = "<";
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case '&': esc = "&";
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default: continue;
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}
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return s[0 : i] + esc + HtmlEscape(s[i+1 : len(s)]);
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}
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}
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return s;
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}
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func (P *Printer) Printf(format string, s ...) {
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n, err := fmt.fprintf(P.text, format, s);
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if err != nil {
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@ -135,7 +148,7 @@ func (P *Printer) Newline(n int) {
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}
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func (P *Printer) String(pos int, s string) {
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func (P *Printer) TaggedString(pos int, tag, s, endtag string) {
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// use estimate for pos if we don't have one
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if pos == 0 {
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pos = P.lastpos;
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@ -230,7 +243,7 @@ func (P *Printer) String(pos int, s string) {
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if debug.BVal() {
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P.Printf("[%d]", P.cpos);
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}
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P.Printf("%s", ctext);
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P.Printf("%s", HtmlEscape(ctext));
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if ctext[1] == '/' {
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//-style comments must end in newline
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@ -276,7 +289,7 @@ func (P *Printer) String(pos int, s string) {
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if debug.BVal() {
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P.Printf("[%d]", pos);
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}
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P.Printf("%s", s);
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P.Printf("%s%s%s", tag, HtmlEscape(s), endtag);
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// --------------------------------
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// interpret state
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@ -300,6 +313,11 @@ func (P *Printer) String(pos int, s string) {
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}
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func (P *Printer) String(pos int, s string) {
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P.TaggedString(pos, "", s, "");
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}
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func (P *Printer) Token(pos int, tok int) {
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P.String(pos, Scanner.TokenString(tok));
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}
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@ -316,36 +334,39 @@ func (P *Printer) Error(pos int, tok int, msg string) {
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// HTML support
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func (P *Printer) HtmlPrologue(title string) {
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if P.tags != nil {
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P.tags.Tag(
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if html.BVal() {
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P.TaggedString(0,
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"<html>\n"
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"<head>\n"
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" <META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html; charset=UTF-8\">\n"
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" <title>" + title + "</title>\n"
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" <title>" + HtmlEscape(title) + "</title>\n"
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" <style type=\"text/css\">\n"
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" </style>\n"
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"</head>\n"
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"<body>\n"
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"<pre>\n"
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"<pre>\n",
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"", ""
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)
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}
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}
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func (P *Printer) HtmlEpilogue() {
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if P.tags != nil {
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P.tags.Tag(
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if html.BVal() {
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P.TaggedString(0,
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"</pre>\n"
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"</body>\n"
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"<html>\n"
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"<html>\n",
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"", ""
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)
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}
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}
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func (P *Printer) HtmlIdentifier(pos int, ident string) {
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if false && P.tags != nil {
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P.tags.Tag(`<a href="#` + ident + `">` + ident + `</a>`);
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if html.BVal() {
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// no need to HtmlEscape ident
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P.TaggedString(pos, `<a href="#` + ident + `">`, ident, `</a>`);
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} else {
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P.String(pos, ident);
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}
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@ -632,14 +653,14 @@ func (P *Printer) ControlClause(s *AST.Stat) {
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P.Stat(s.init);
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P.separator = none;
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}
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P.Printf(";");
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P.String(0, ";");
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P.separator = blank;
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if s.expr != nil {
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P.Expr(s.expr);
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P.separator = none;
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}
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if s.tok == Scanner.FOR {
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P.Printf(";");
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P.String(0, ";");
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P.separator = blank;
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if has_post {
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P.Stat(s.post);
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@ -838,14 +859,8 @@ export func Print(prog *AST.Program) {
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if usetabs.BVal() {
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padchar = '\t';
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}
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var (
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text = tabwriter.New(os.Stdout, int(tabwidth.IVal()), 1, padchar, true, html.BVal());
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tags *htmlwriter.Writer;
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)
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if html.BVal() {
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tags = htmlwriter.New(text);
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}
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P.Init(text, tags, prog.comments);
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text := tabwriter.New(os.Stdout, int(tabwidth.IVal()), 1, padchar, true, html.BVal());
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P.Init(text, prog.comments);
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P.HtmlPrologue("<the source>");
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P.Program(prog);
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@ -23,7 +23,7 @@ apply1() {
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#echo $1 $2
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case `basename $F` in
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# these files don't pass the idempotency test yet
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log.go | type.go | \
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log.go | type.go | types_amd64_darwin.go | \
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\
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selftest1.go | func3.go | bug014.go | bug029.go | bug032.go | bug050.go | \
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bug068.go | bug088.go | bug083.go | bug106.go | bug125.go ) ;; # skip - files contain syntax errors
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