platform_build_soong/cmd/soong_build/writedocs.go
Colin Cross 9aed5bc715 Add a new SingletonModule type
A SingletonModule is halfway between a Singleton and a Module.  It has
access to visiting other modules via its GenerateSingletonBuildActions
method, but must be defined in an Android.bp file and can also be
depended on like a module.

Bug: 176904285
Test: singleton_module_test.go
Change-Id: I1b2bfdfb3927c1eabf431c53213cb7c581e33ca4
2021-01-07 17:19:27 -08:00

416 lines
11 KiB
Go

// Copyright 2017 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"android/soong/android"
"bytes"
"html/template"
"io/ioutil"
"path/filepath"
"sort"
"github.com/google/blueprint/bootstrap"
"github.com/google/blueprint/bootstrap/bpdoc"
)
type perPackageTemplateData struct {
Name string
Modules []moduleTypeTemplateData
}
type moduleTypeTemplateData struct {
Name string
Synopsis template.HTML
Properties []bpdoc.Property
}
// The properties in this map are displayed first, according to their rank.
// TODO(jungjw): consider providing module type-dependent ranking
var propertyRank = map[string]int{
"name": 0,
"src": 1,
"srcs": 2,
"exclude_srcs": 3,
"defaults": 4,
"host_supported": 5,
"device_supported": 6,
}
// For each module type, extract its documentation and convert it to the template data.
func moduleTypeDocsToTemplates(moduleTypeList []*bpdoc.ModuleType) []moduleTypeTemplateData {
result := make([]moduleTypeTemplateData, 0)
// Combine properties from all PropertyStruct's and reorder them -- first the ones
// with rank, then the rest of the properties in alphabetic order.
for _, m := range moduleTypeList {
item := moduleTypeTemplateData{
Name: m.Name,
Synopsis: m.Text,
Properties: make([]bpdoc.Property, 0),
}
props := make([]bpdoc.Property, 0)
for _, propStruct := range m.PropertyStructs {
props = append(props, propStruct.Properties...)
}
sort.Slice(props, func(i, j int) bool {
if rankI, ok := propertyRank[props[i].Name]; ok {
if rankJ, ok := propertyRank[props[j].Name]; ok {
return rankI < rankJ
} else {
return true
}
}
if _, ok := propertyRank[props[j].Name]; ok {
return false
}
return props[i].Name < props[j].Name
})
// Eliminate top-level duplicates. TODO(jungjw): improve bpdoc to handle this.
previousPropertyName := ""
for _, prop := range props {
if prop.Name == previousPropertyName {
oldProp := &item.Properties[len(item.Properties)-1].Properties
bpdoc.CollapseDuplicateProperties(oldProp, &prop.Properties)
} else {
item.Properties = append(item.Properties, prop)
}
previousPropertyName = prop.Name
}
result = append(result, item)
}
sort.Slice(result, func(i, j int) bool { return result[i].Name < result[j].Name })
return result
}
func getPackages(ctx *android.Context) ([]*bpdoc.Package, error) {
moduleTypeFactories := android.ModuleTypeFactoriesForDocs()
return bootstrap.ModuleTypeDocs(ctx.Context, moduleTypeFactories)
}
func writeDocs(ctx *android.Context, filename string) error {
packages, err := getPackages(ctx)
if err != nil {
return err
}
// Produce the top-level, package list page first.
tmpl := template.Must(template.Must(template.New("file").Parse(packageListTemplate)).Parse(copyBaseUrl))
buf := &bytes.Buffer{}
err = tmpl.Execute(buf, packages)
if err == nil {
err = ioutil.WriteFile(filename, buf.Bytes(), 0666)
}
// Now, produce per-package module lists with detailed information.
for _, pkg := range packages {
// We need a module name getter/setter function because I couldn't
// find a way to keep it in a variable defined within the template.
currentModuleName := ""
tmpl := template.Must(
template.Must(template.New("file").Funcs(map[string]interface{}{
"setModule": func(moduleName string) string {
currentModuleName = moduleName
return ""
},
"getModule": func() string {
return currentModuleName
},
}).Parse(perPackageTemplate)).Parse(copyBaseUrl))
buf := &bytes.Buffer{}
modules := moduleTypeDocsToTemplates(pkg.ModuleTypes)
data := perPackageTemplateData{Name: pkg.Name, Modules: modules}
err = tmpl.Execute(buf, data)
if err != nil {
return err
}
pkgFileName := filepath.Join(filepath.Dir(filename), pkg.Name+".html")
err = ioutil.WriteFile(pkgFileName, buf.Bytes(), 0666)
if err != nil {
return err
}
}
return err
}
// TODO(jungjw): Consider ordering by name.
const (
packageListTemplate = `
<html>
<head>
<title>Build Docs</title>
<style>
#main {
padding: 48px;
}
table{
table-layout: fixed;
}
td {
word-wrap:break-word;
}
/* The following entries are copied from source.android.com's css file. */
td,td code {
color: #202124
}
th,th code {
color: #fff;
font: 500 16px/24px Roboto,sans-serif
}
td,table.responsive tr:not(.alt) td td:first-child,table.responsive td tr:not(.alt) td:first-child {
background: rgba(255,255,255,.95);
vertical-align: top
}
td,td code {
padding: 7px 8px 8px
}
tr {
border: 0;
background: #78909c;
border-top: 1px solid #cfd8dc
}
th,td {
border: 0;
margin: 0;
text-align: left
}
th {
height: 48px;
padding: 8px;
vertical-align: middle
}
table {
border: 0;
border-collapse: collapse;
border-spacing: 0;
font: 14px/20px Roboto,sans-serif;
margin: 16px 0;
width: 100%
}
h1 {
color: #80868b;
font: 300 34px/40px Roboto,sans-serif;
letter-spacing: -0.01em;
margin: 40px 0 20px
}
h1,h2,h3,h4,h5,h6 {
overflow: hidden;
padding: 0;
text-overflow: ellipsis
}
:link,:visited {
color: #039be5;
outline: 0;
text-decoration: none
}
body,html {
color: #202124;
font: 400 16px/24px Roboto,sans-serif;
-moz-osx-font-smoothing: grayscale;
-webkit-font-smoothing: antialiased;
height: 100%;
margin: 0;
-webkit-text-size-adjust: 100%;
-moz-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
text-size-adjust: 100%
}
html {
-webkit-box-sizing: border-box;
box-sizing: border-box
}
*,*::before,*::after {
-webkit-box-sizing: inherit;
box-sizing: inherit
}
body,div,dl,dd,form,img,input,figure,menu {
margin: 0;
padding: 0
}
</style>
{{template "copyBaseUrl"}}
</head>
<body>
<div id="main">
<H1>Soong Modules Reference</H1>
The latest versions of Android use the Soong build system, which greatly simplifies build
configuration over the previous Make-based system. This site contains the generated reference
files for the Soong build system.
<table class="module_types" summary="Table of Soong module types sorted by package">
<thead>
<tr>
<th style="width:20%">Package</th>
<th style="width:80%">Module types</th>
</tr>
</thead>
<tbody>
{{range $pkg := .}}
<tr>
<td>{{.Path}}</td>
<td>
{{range $i, $mod := .ModuleTypes}}{{if $i}}, {{end}}<a href="{{$pkg.Name}}.html#{{$mod.Name}}">{{$mod.Name}}</a>{{end}}
</td>
</tr>
{{end}}
</tbody>
</table>
</div>
</body>
</html>
`
perPackageTemplate = `
<html>
<head>
<title>Build Docs</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css">
<style>
.accordion,.simple{margin-left:1.5em;text-indent:-1.5em;margin-top:.25em}
.collapsible{border-width:0 0 0 1;margin-left:.25em;padding-left:.25em;border-style:solid;
border-color:grey;display:none;}
span.fixed{display: block; float: left; clear: left; width: 1em;}
ul {
list-style-type: none;
margin: 0;
padding: 0;
width: 30ch;
background-color: #f1f1f1;
position: fixed;
height: 100%;
overflow: auto;
}
li a {
display: block;
color: #000;
padding: 8px 16px;
text-decoration: none;
}
li a.active {
background-color: #4CAF50;
color: white;
}
li a:hover:not(.active) {
background-color: #555;
color: white;
}
</style>
{{template "copyBaseUrl"}}
</head>
<body>
{{- /* Fixed sidebar with module types */ -}}
<ul>
<li><h3>{{.Name}} package</h3></li>
{{range $moduleType := .Modules}}<li><a href="{{$.Name}}.html#{{$moduleType.Name}}">{{$moduleType.Name}}</a></li>
{{end -}}
</ul>
{{/* Main panel with H1 section per module type */}}
<div style="margin-left:30ch;padding:1px 16px;">
{{range $moduleType := .Modules}}
{{setModule $moduleType.Name}}
<p>
<h2 id="{{$moduleType.Name}}">{{$moduleType.Name}}</h2>
{{if $moduleType.Synopsis }}{{$moduleType.Synopsis}}{{else}}<i>Missing synopsis</i>{{end}}
{{- /* Comma-separated list of module attributes' links module attributes */ -}}
<div class="breadcrumb">
{{range $i,$prop := $moduleType.Properties }}
{{ if gt $i 0 }},&nbsp;{{end -}}
<a href={{$.Name}}.html#{{getModule}}.{{$prop.Name}}>{{$prop.Name}}</a>
{{- end -}}
</div>
{{- /* Property description */ -}}
{{- template "properties" $moduleType.Properties -}}
{{- end -}}
{{define "properties" -}}
{{range .}}
{{if .Properties -}}
<div class="accordion" id="{{getModule}}.{{.Name}}">
<span class="fixed">&#x2295</span><b>{{.Name}}</b>
{{- range .OtherNames -}}, {{.}}{{- end -}}
</div>
<div class="collapsible">
{{- .Text}} {{range .OtherTexts}}{{.}}{{end}}
{{template "properties" .Properties -}}
</div>
{{- else -}}
<div class="simple" id="{{getModule}}.{{.Name}}">
<span class="fixed">&nbsp;</span><b>{{.Name}} {{range .OtherNames}}, {{.}}{{end -}}</b>
<i>{{.Type}}</i>
{{- if .Text -}}{{if ne .Text "\n"}}, {{end}}{{.Text}}{{- end -}}
{{- with .OtherTexts -}}{{.}}{{- end -}}
{{- if .Default -}}<i>Default: {{.Default}}</i>{{- end -}}
</div>
{{- end}}
{{- end -}}
{{- end -}}
</div>
<script>
accordions = document.getElementsByClassName('accordion');
for (i=0; i < accordions.length; ++i) {
accordions[i].addEventListener("click", function() {
var panel = this.nextElementSibling;
var child = this.firstElementChild;
if (panel.style.display === "block") {
panel.style.display = "none";
child.textContent = '\u2295';
} else {
panel.style.display = "block";
child.textContent = '\u2296';
}
});
}
</script>
</body>
`
copyBaseUrl = `
{{define "copyBaseUrl"}}
<script type="text/javascript">
window.addEventListener('message', (e) => {
if (e != null && e.data != null && e.data.type === "SET_BASE" && e.data.base != null) {
const existingBase = document.querySelector('base');
if (existingBase != null) {
existingBase.parentElement.removeChild(existingBase);
}
const base = document.createElement('base');
base.setAttribute('href', e.data.base);
document.head.appendChild(base);
}
});
</script>
{{end}}
`
)