X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=pdf%2Fxpdf%2FFunction.cc;h=d9d4a934ed04ecb79de01fc6466afa49601da741;hb=8e5042edbe098c8a8b760a36a8bc35dfca4e6041;hp=64ea60c1902e6bbbcc8b7e3e3b0ef21ceb993fa6;hpb=5f7eee136b5330a15069179cbd97f168287a9ef6;p=evince.git diff --git a/pdf/xpdf/Function.cc b/pdf/xpdf/Function.cc index 64ea60c1..d9d4a934 100644 --- a/pdf/xpdf/Function.cc +++ b/pdf/xpdf/Function.cc @@ -2,15 +2,17 @@ // // Function.cc // -// Copyright 2001-2002 Glyph & Cog, LLC +// Copyright 2001-2003 Glyph & Cog, LLC // //======================================================================== -#ifdef __GNUC__ +#include + +#ifdef USE_GCC_PRAGMAS #pragma implementation #endif -#include +#include #include #include #include @@ -379,8 +381,8 @@ void SampledFunction::transform(double *in, double *out) { // pull 2^m values out of the sample array for (j = 0; j < (1<= 0; --k) { + idx = 0; + for (k = m - 1; k >= 0; --k) { idx = idx * sampleSize[k] + e[(j >> k) & 1][k]; } idx = idx * n + i; @@ -411,7 +413,6 @@ void SampledFunction::transform(double *in, double *out) { ExponentialFunction::ExponentialFunction(Object *funcObj, Dict *dict) { Object obj1, obj2; - GBool hasN; int i; ok = gFalse; @@ -424,23 +425,14 @@ ExponentialFunction::ExponentialFunction(Object *funcObj, Dict *dict) { error(-1, "Exponential function with more than one input"); goto err1; } - hasN = hasRange; - - //----- default values - for (i = 0; i < funcMaxOutputs; ++i) { - c0[i] = 0; - c1[i] = 1; - } //----- C0 if (dict->lookup("C0", &obj1)->isArray()) { - if (!hasN) { - n = obj1.arrayGetLength(); - hasN = gTrue; - } else if (obj1.arrayGetLength() != n) { + if (hasRange && obj1.arrayGetLength() != n) { error(-1, "Function's C0 array is wrong length"); goto err2; } + n = obj1.arrayGetLength(); for (i = 0; i < n; ++i) { obj1.arrayGet(i, &obj2); if (!obj2.isNum()) { @@ -450,15 +442,19 @@ ExponentialFunction::ExponentialFunction(Object *funcObj, Dict *dict) { c0[i] = obj2.getNum(); obj2.free(); } + } else { + if (hasRange && n != 1) { + error(-1, "Function's C0 array is wrong length"); + goto err2; + } + n = 1; + c0[0] = 0; } obj1.free(); //----- C1 if (dict->lookup("C1", &obj1)->isArray()) { - if (!hasN) { - n = obj1.arrayGetLength(); - hasN = gTrue; - } else if (obj1.arrayGetLength() != n) { + if (obj1.arrayGetLength() != n) { error(-1, "Function's C1 array is wrong length"); goto err2; } @@ -471,6 +467,12 @@ ExponentialFunction::ExponentialFunction(Object *funcObj, Dict *dict) { c1[i] = obj2.getNum(); obj2.free(); } + } else { + if (n != 1) { + error(-1, "Function's C1 array is wrong length"); + goto err2; + } + c1[0] = 1; } obj1.free(); @@ -482,13 +484,6 @@ ExponentialFunction::ExponentialFunction(Object *funcObj, Dict *dict) { e = obj1.getNum(); obj1.free(); - // this isn't supposed to happen, but I've run into (broken) PDF - // files where it does - if (!hasN) { - error(-1, "Exponential function does not define number of output values"); - n = 1; - } - ok = gTrue; return; @@ -622,9 +617,13 @@ StitchingFunction::StitchingFunction(Object *funcObj, Dict *dict) { } StitchingFunction::StitchingFunction(StitchingFunction *func) { + int i; + k = func->k; funcs = (Function **)gmalloc(k * sizeof(Function *)); - memcpy(funcs, func->funcs, k * sizeof(Function *)); + for (i = 0; i < k; ++i) { + funcs[i] = func->funcs[i]->copy(); + } bounds = (double *)gmalloc((k + 1) * sizeof(double)); memcpy(bounds, func->bounds, (k + 1) * sizeof(double)); encode = (double *)gmalloc(2 * k * sizeof(double)); @@ -635,9 +634,11 @@ StitchingFunction::StitchingFunction(StitchingFunction *func) { StitchingFunction::~StitchingFunction() { int i; - for (i = 0; i < k; ++i) { - if (funcs[i]) { - delete funcs[i]; + if (funcs) { + for (i = 0; i < k; ++i) { + if (funcs[i]) { + delete funcs[i]; + } } } gfree(funcs); @@ -1071,7 +1072,11 @@ GBool PostScriptFunction::parseCode(Stream *str, int *codePtr) { resizeCode(*codePtr); if (isReal) { code[*codePtr].type = psReal; - code[*codePtr].real = atof(tok->getCString()); + { + char *theLocale = setlocale(LC_NUMERIC, "C"); + code[*codePtr].real = atof(tok->getCString()); + setlocale(LC_NUMERIC, theLocale); + } } else { code[*codePtr].type = psInt; code[*codePtr].intg = atoi(tok->getCString()); @@ -1095,14 +1100,14 @@ GBool PostScriptFunction::parseCode(Stream *str, int *codePtr) { if (!parseCode(str, codePtr)) { return gFalse; } + delete tok; + if (!(tok = getToken(str))) { + error(-1, "Unexpected end of PostScript function stream"); + return gFalse; + } } else { elsePtr = -1; } - delete tok; - if (!(tok = getToken(str))) { - error(-1, "Unexpected end of PostScript function stream"); - return gFalse; - } if (!tok->cmp("if")) { if (elsePtr >= 0) { error(-1, "Got 'if' operator with two blocks in PostScript function"); @@ -1247,7 +1252,7 @@ void PostScriptFunction::exec(PSStack *stack, int codePtr) { } else { b2 = stack->popBool(); b1 = stack->popBool(); - stack->pushReal(b1 && b2); + stack->pushBool(b1 && b2); } break; case psOpAtan: @@ -1314,8 +1319,8 @@ void PostScriptFunction::exec(PSStack *stack, int codePtr) { stack->roll(2, 1); break; case psOpExp: - r2 = stack->popInt(); - r1 = stack->popInt(); + r2 = stack->popNum(); + r1 = stack->popNum(); stack->pushReal(pow(r1, r2)); break; case psOpFalse: @@ -1427,7 +1432,7 @@ void PostScriptFunction::exec(PSStack *stack, int codePtr) { if (stack->topIsInt()) { stack->pushInt(~stack->popInt()); } else { - stack->pushReal(!stack->popBool()); + stack->pushBool(!stack->popBool()); } break; case psOpOr: @@ -1438,7 +1443,7 @@ void PostScriptFunction::exec(PSStack *stack, int codePtr) { } else { b2 = stack->popBool(); b1 = stack->popBool(); - stack->pushReal(b1 || b2); + stack->pushBool(b1 || b2); } break; case psOpPop: @@ -1456,7 +1461,7 @@ void PostScriptFunction::exec(PSStack *stack, int codePtr) { } break; case psOpSin: - stack->pushReal(cos(stack->popNum())); + stack->pushReal(sin(stack->popNum())); break; case psOpSqrt: stack->pushReal(sqrt(stack->popNum())); @@ -1489,7 +1494,7 @@ void PostScriptFunction::exec(PSStack *stack, int codePtr) { } else { b2 = stack->popBool(); b1 = stack->popBool(); - stack->pushReal(b1 ^ b2); + stack->pushBool(b1 ^ b2); } break; case psOpIf: