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Make Dict handle all the fetching of Refs.

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This commit is contained in:
Brendan Dahl 2012-04-04 11:43:04 -07:00
parent 6ec62cd148
commit 8a45177be0
8 changed files with 109 additions and 102 deletions
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37
src/core.js
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@ -73,13 +73,13 @@ var Page = (function PageClosure() {
Page.prototype = {
getPageProp: function pageGetPageProp(key) {
return this.xref.fetchIfRef(this.pageDict.get(key));
return this.pageDict.get(key);
},
inheritPageProp: function pageInheritPageProp(key) {
var dict = this.pageDict;
var obj = dict.get(key);
while (obj === undefined) {
dict = this.xref.fetchIfRef(dict.get('Parent'));
dict = dict.get('Parent');
if (!dict)
break;
obj = dict.get(key);
@ -199,8 +199,8 @@ var Page = (function PageClosure() {
this.stats.time('Build IR Queue');
var xref = this.xref;
var content = xref.fetchIfRef(this.content);
var resources = xref.fetchIfRef(this.resources);
var content = this.content;
var resources = this.resources;
if (isArray(content)) {
// fetching items
var i, n = content.length;
@ -242,8 +242,8 @@ var Page = (function PageClosure() {
var stats = this.stats;
stats.time('Rendering');
var xref = this.xref;
var resources = xref.fetchIfRef(this.resources);
var mediaBox = xref.fetchIfRef(this.mediaBox);
var resources = this.resources;
var mediaBox = this.mediaBox;
assertWellFormed(isDict(resources), 'invalid page resources');
gfx.xref = xref;
@ -307,7 +307,7 @@ var Page = (function PageClosure() {
function getInheritableProperty(annotation, name) {
var item = annotation;
while (item && !item.has(name)) {
item = xref.fetchIfRef(item.get('Parent'));
item = item.get('Parent');
}
if (!item)
return null;
@ -330,7 +330,7 @@ var Page = (function PageClosure() {
}
}
var annotations = xref.fetchIfRef(this.annotations) || [];
var annotations = this.annotations || [];
var i, n = annotations.length;
var items = [];
for (i = 0; i < n; ++i) {
@ -353,7 +353,7 @@ var Page = (function PageClosure() {
item.height = Math.abs(topLeftCorner.y - bottomRightCorner.y);
switch (subtype.name) {
case 'Link':
var a = this.xref.fetchIfRef(annotation.get('A'));
var a = annotation.get('A');
if (a) {
switch (a.get('S').name) {
case 'URI':
@ -386,21 +386,22 @@ var Page = (function PageClosure() {
var fieldName = [];
var namedItem = annotation, ref = annotationRef;
while (namedItem) {
var parentRef = namedItem.get('Parent');
var parent = xref.fetchIfRef(parentRef);
var parent = namedItem.get('Parent');
var parentRef = namedItem.getRaw('Parent');
var name = namedItem.get('T');
if (name)
if (name) {
fieldName.unshift(stringToPDFString(name));
else {
} else {
// The field name is absent, that means more than one field
// with the same name may exist. Replacing the empty name
// with the '`' plus index in the parent's 'Kids' array.
// This is not in the PDF spec but necessary to id the
// the input controls.
var kids = xref.fetchIfRef(parent.get('Kids'));
var kids = parent.get('Kids');
var j, jj;
for (j = 0, jj = kids.length; j < jj; j++) {
if (kids[j].num == ref.num && kids[j].gen == ref.gen)
var kidRef = kids[j];
if (kidRef.num == ref.num && kidRef.gen == ref.gen)
break;
}
fieldName.unshift('`' + j);
@ -490,7 +491,7 @@ var PDFDocModel = (function PDFDocModelClosure() {
assertWellFormed(stream.length > 0, 'stream must have data');
this.stream = stream;
this.setup();
this.acroForm = this.xref.fetchIfRef(this.catalog.catDict.get('AcroForm'));
this.acroForm = this.catalog.catDict.get('AcroForm');
}
function find(stream, needle, limit, backwards) {
@ -597,7 +598,7 @@ var PDFDocModel = (function PDFDocModelClosure() {
getDocumentInfo: function pdfDocGetDocumentInfo() {
var info;
if (this.xref.trailer.has('Info'))
info = this.xref.fetch(this.xref.trailer.get('Info'));
info = this.xref.trailer.get('Info');
return shadow(this, 'getDocumentInfo', info);
},
@ -605,7 +606,7 @@ var PDFDocModel = (function PDFDocModelClosure() {
var xref = this.xref, fileID;
if (xref.trailer.has('ID')) {
fileID = '';
var id = xref.fetchIfRef(xref.trailer.get('ID'))[0];
var id = xref.trailer.get('ID')[0];
id.split('').forEach(function(el) {
fileID += Number(el.charCodeAt(0)).toString(16);
});