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Merge pull request #12879 from calixteman/xfa_parser
XFA - Add a parser for XFA files
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/* Copyright 2021 Mozilla Foundation | ||
* | ||
* 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. | ||
*/ | ||
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import { $buildXFAObject, NamespaceIds } from "./namespaces.js"; | ||
import { $cleanup, $onChild, XFAObject } from "./xfa_object.js"; | ||
import { NamespaceSetUp } from "./setup.js"; | ||
import { UnknownNamespace } from "./unknown.js"; | ||
import { warn } from "../../shared/util.js"; | ||
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class Root extends XFAObject { | ||
constructor() { | ||
super(-1, "root", Object.create(null)); | ||
this.element = null; | ||
} | ||
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[$onChild](child) { | ||
this.element = child; | ||
} | ||
} | ||
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class Empty extends XFAObject { | ||
constructor() { | ||
super(-1, "", Object.create(null)); | ||
} | ||
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[$onChild](_) {} | ||
} | ||
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class Builder { | ||
constructor() { | ||
this._namespaceStack = []; | ||
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// Each prefix has its own stack | ||
this._namespacePrefixes = new Map(); | ||
this._namespaces = new Map(); | ||
this._nextNsId = Math.max( | ||
...Object.values(NamespaceIds).map(({ id }) => id) | ||
); | ||
this._currentNamespace = new UnknownNamespace(++this._nextNsId); | ||
} | ||
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buildRoot() { | ||
return new Root(); | ||
} | ||
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build({ nsPrefix, name, attributes, namespace, prefixes }) { | ||
const hasNamespaceDef = namespace !== null; | ||
if (hasNamespaceDef) { | ||
// Define the current namespace to use. | ||
this._namespaceStack.push(this._currentNamespace); | ||
this._currentNamespace = this._searchNamespace(namespace); | ||
} | ||
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if (prefixes) { | ||
// The xml node may have namespace prefix definitions | ||
this._addNamespacePrefix(prefixes); | ||
} | ||
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const namespaceToUse = this._getNamespaceToUse(nsPrefix); | ||
const node = | ||
(namespaceToUse && namespaceToUse[$buildXFAObject](name, attributes)) || | ||
new Empty(); | ||
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// In case the node has some namespace things, | ||
// we must pop the different stacks. | ||
if (hasNamespaceDef || prefixes) { | ||
node[$cleanup] = { | ||
hasNamespace: hasNamespaceDef, | ||
prefixes, | ||
}; | ||
} | ||
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return node; | ||
} | ||
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_searchNamespace(nsName) { | ||
let ns = this._namespaces.get(nsName); | ||
if (ns) { | ||
return ns; | ||
} | ||
for (const [name, { check }] of Object.entries(NamespaceIds)) { | ||
if (check(nsName)) { | ||
ns = NamespaceSetUp[name]; | ||
if (ns) { | ||
this._namespaces.set(nsName, ns); | ||
return ns; | ||
} | ||
// The namespace is known but not handled. | ||
break; | ||
} | ||
} | ||
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ns = new UnknownNamespace(++this._nextNsId); | ||
this._namespaces.set(nsName, ns); | ||
return ns; | ||
} | ||
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_addNamespacePrefix(prefixes) { | ||
for (const { prefix, value } of prefixes) { | ||
const namespace = this._searchNamespace(value); | ||
let prefixStack = this._namespacePrefixes.get(prefix); | ||
if (!prefixStack) { | ||
prefixStack = []; | ||
this._namespacePrefixes.set(prefix, prefixStack); | ||
} | ||
prefixStack.push(namespace); | ||
} | ||
} | ||
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_getNamespaceToUse(prefix) { | ||
if (!prefix) { | ||
return this._currentNamespace; | ||
} | ||
const prefixStack = this._namespacePrefixes.get(prefix); | ||
if (prefixStack && prefixStack.length > 0) { | ||
return prefixStack[prefixStack.length - 1]; | ||
} | ||
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warn(`Unknown namespace prefix: ${prefix}.`); | ||
return null; | ||
} | ||
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clean(data) { | ||
const { hasNamespace, prefixes } = data; | ||
if (hasNamespace) { | ||
this._currentNamespace = this._namespaceStack.pop(); | ||
} | ||
if (prefixes) { | ||
prefixes.forEach(({ prefix }) => { | ||
this._namespacePrefixes.get(prefix).pop(); | ||
}); | ||
} | ||
} | ||
} | ||
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export { Builder }; |
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/* Copyright 2021 Mozilla Foundation | ||
* | ||
* 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. | ||
*/ | ||
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import { $buildXFAObject, NamespaceIds } from "./namespaces.js"; | ||
import { | ||
IntegerObject, | ||
OptionObject, | ||
StringObject, | ||
XFAObject, | ||
} from "./xfa_object.js"; | ||
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const CONFIG_NS_ID = NamespaceIds.config.id; | ||
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class Acrobat extends XFAObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "acrobat", /* hasChildren = */ true); | ||
this.acrobat7 = null; | ||
this.autoSave = null; | ||
this.common = null; | ||
this.validate = null; | ||
this.validateApprovalSignatures = null; | ||
this.submitUrl = []; | ||
} | ||
} | ||
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class Acrobat7 extends XFAObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "acrobat7", /* hasChildren = */ true); | ||
this.dynamicRender = null; | ||
} | ||
} | ||
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class AdobeExtensionLevel extends IntegerObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "adobeExtensionLevel", 0, n => n >= 1 && n <= 8); | ||
} | ||
} | ||
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class AutoSave extends OptionObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "autoSave", ["disabled", "enabled"]); | ||
} | ||
} | ||
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class Config extends XFAObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "config", /* hasChildren = */ true); | ||
this.acrobat = null; | ||
this.present = null; | ||
this.trace = null; | ||
this.agent = []; | ||
} | ||
} | ||
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class DynamicRender extends OptionObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "dynamicRender", ["forbidden", "required"]); | ||
} | ||
} | ||
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class Present extends XFAObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "present", /* hasChildren = */ true); | ||
this.behaviorOverride = null; | ||
this.cache = null; | ||
this.common = null; | ||
this.copies = null; | ||
this.destination = null; | ||
this.incrementalMerge = null; | ||
this.layout = null; | ||
this.output = null; | ||
this.overprint = null; | ||
this.pagination = null; | ||
this.paginationOverride = null; | ||
this.script = null; | ||
this.validate = null; | ||
this.xdp = null; | ||
this.driver = []; | ||
this.labelPrinter = []; | ||
this.pcl = []; | ||
this.pdf = []; | ||
this.ps = []; | ||
this.submitUrl = []; | ||
this.webClient = []; | ||
this.zpl = []; | ||
} | ||
} | ||
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class Pdf extends XFAObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "pdf", /* hasChildren = */ true); | ||
this.name = attributes.name || ""; | ||
this.adobeExtensionLevel = null; | ||
this.batchOutput = null; | ||
this.compression = null; | ||
this.creator = null; | ||
this.encryption = null; | ||
this.fontInfo = null; | ||
this.interactive = null; | ||
this.linearized = null; | ||
this.openAction = null; | ||
this.pdfa = null; | ||
this.producer = null; | ||
this.renderPolicy = null; | ||
this.scriptModel = null; | ||
this.silentPrint = null; | ||
this.submitFormat = null; | ||
this.tagged = null; | ||
this.version = null; | ||
this.viewerPreferences = null; | ||
this.xdc = null; | ||
} | ||
} | ||
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class SubmitUrl extends StringObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "submitUrl"); | ||
} | ||
} | ||
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class Validate extends OptionObject { | ||
constructor(attributes) { | ||
super(CONFIG_NS_ID, "validate", [ | ||
"preSubmit", | ||
"prePrint", | ||
"preExecute", | ||
"preSave", | ||
]); | ||
} | ||
} | ||
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class ConfigNamespace { | ||
static [$buildXFAObject](name, attributes) { | ||
if (ConfigNamespace.hasOwnProperty(name)) { | ||
return ConfigNamespace[name](attributes); | ||
} | ||
return undefined; | ||
} | ||
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static acrobat(attrs) { | ||
return new Acrobat(attrs); | ||
} | ||
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static acrobat7(attrs) { | ||
return new Acrobat7(attrs); | ||
} | ||
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static adobeExtensionLevel(attrs) { | ||
return new AdobeExtensionLevel(attrs); | ||
} | ||
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static autoSave(attrs) { | ||
return new AutoSave(attrs); | ||
} | ||
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static config(attrs) { | ||
return new Config(attrs); | ||
} | ||
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static dynamicRender(attrs) { | ||
return new DynamicRender(attrs); | ||
} | ||
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static pdf(attrs) { | ||
return new Pdf(attrs); | ||
} | ||
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static present(attrs) { | ||
return new Present(attrs); | ||
} | ||
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static submitUrl(attrs) { | ||
return new SubmitUrl(attrs); | ||
} | ||
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static validate(attrs) { | ||
return new Validate(attrs); | ||
} | ||
} | ||
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export { ConfigNamespace }; |
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