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Remove createFromIR from PDFFunctionFactory; forgive invalid Dict values.

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This commit is contained in:
Yury Delendik 2018-04-10 18:49:31 -05:00
parent a8e9f6cc29
commit 20085aaa5e
2 changed files with 41 additions and 51 deletions
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72
src/core/function.js
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@ -46,22 +46,24 @@ class PDFFunctionFactory {
fnObj,
});
}
}
createFromIR(IR) {
return PDFFunction.fromIR({
xref: this.xref,
isEvalSupported: this.isEvalSupported,
IR,
});
function toNumberArray(arr) {
if (!Array.isArray(arr)) {
return null;
}
createIR(fn) {
return PDFFunction.getIR({
xref: this.xref,
isEvalSupported: this.isEvalSupported,
fn,
});
const length = arr.length;
for (let i = 0; i < length; i++) {
if (typeof arr[i] !== 'number') {
// Non-number is found -- convert all items to numbers.
const result = new Array(length);
for (let i = 0; i < length; i++) {
result[i] = +arr[i];
}
return result;
}
}
return arr;
}
var PDFFunction = (function PDFFunctionClosure() {
@ -171,8 +173,8 @@ var PDFFunction = (function PDFFunctionClosure() {
}
return out;
}
var domain = dict.getArray('Domain');
var range = dict.getArray('Range');
var domain = toNumberArray(dict.getArray('Domain'));
var range = toNumberArray(dict.getArray('Range'));
if (!domain || !range) {
throw new FormatError('No domain or range');
@ -184,7 +186,7 @@ var PDFFunction = (function PDFFunctionClosure() {
domain = toMultiArray(domain);
range = toMultiArray(range);
var size = dict.get('Size');
var size = toNumberArray(dict.get('Size'));
var bps = dict.get('BitsPerSample');
var order = dict.get('Order') || 1;
if (order !== 1) {
@ -193,17 +195,17 @@ var PDFFunction = (function PDFFunctionClosure() {
info('No support for cubic spline interpolation: ' + order);
}
var encode = dict.getArray('Encode');
var encode = toNumberArray(dict.getArray('Encode'));
if (!encode) {
encode = [];
for (var i = 0; i < inputSize; ++i) {
encode.push(0);
encode.push(size[i] - 1);
encode.push([0, size[i] - 1]);
}
} else {
encode = toMultiArray(encode);
}
encode = toMultiArray(encode);
var decode = dict.getArray('Decode');
var decode = toNumberArray(dict.getArray('Decode'));
if (!decode) {
decode = range;
} else {
@ -304,15 +306,10 @@ var PDFFunction = (function PDFFunctionClosure() {
},
constructInterpolated({ xref, isEvalSupported, fn, dict, }) {
var c0 = dict.getArray('C0') || [0];
var c1 = dict.getArray('C1') || [1];
var c0 = toNumberArray(dict.getArray('C0')) || [0];
var c1 = toNumberArray(dict.getArray('C1')) || [1];
var n = dict.get('N');
if (!Array.isArray(c0) || !Array.isArray(c1)) {
throw new FormatError(
'Illegal dictionary for interpolated function');
}
var length = c0.length;
var diff = [];
for (var i = 0; i < length; ++i) {
@ -340,7 +337,7 @@ var PDFFunction = (function PDFFunctionClosure() {
},
constructStiched({ xref, isEvalSupported, fn, dict, }) {
var domain = dict.getArray('Domain');
var domain = toNumberArray(dict.getArray('Domain'));
if (!domain) {
throw new FormatError('No domain');
@ -354,12 +351,12 @@ var PDFFunction = (function PDFFunctionClosure() {
var fnRefs = dict.get('Functions');
var fns = [];
for (var i = 0, ii = fnRefs.length; i < ii; ++i) {
fns.push(this.getIR({ xref, isEvalSupported,
fns.push(this.parse({ xref, isEvalSupported,
fn: xref.fetchIfRef(fnRefs[i]), }));
}
var bounds = dict.getArray('Bounds');
var encode = dict.getArray('Encode');
var bounds = toNumberArray(dict.getArray('Bounds'));
var encode = toNumberArray(dict.getArray('Encode'));
return [CONSTRUCT_STICHED, domain, bounds, encode, fns];
},
@ -368,14 +365,9 @@ var PDFFunction = (function PDFFunctionClosure() {
var domain = IR[1];
var bounds = IR[2];
var encode = IR[3];
var fnsIR = IR[4];
var fns = [];
var fns = IR[4];
var tmpBuf = new Float32Array(1);
for (var i = 0, ii = fnsIR.length; i < ii; i++) {
fns.push(this.fromIR({ xref, isEvalSupported, IR: fnsIR[i], }));
}
return function constructStichedFromIRResult(src, srcOffset,
dest, destOffset) {
var clip = function constructStichedFromIRClip(v, min, max) {
@ -420,8 +412,8 @@ var PDFFunction = (function PDFFunctionClosure() {
},
constructPostScript({ xref, isEvalSupported, fn, dict, }) {
var domain = dict.getArray('Domain');
var range = dict.getArray('Range');
var domain = toNumberArray(dict.getArray('Domain'));
var range = toNumberArray(dict.getArray('Range'));
if (!domain) {
throw new FormatError('No domain.');