X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2Fmath_extern.C;h=f595b1b1686d040165163cac6a3640b5f3fa61db;hb=254272868f1d891b9d0a778f871afb23cce84081;hp=908c6f73eda54eb4a4bfbb21ad59f1044f7b85c3;hpb=3516a9a2fcaac4aad47039ee244d2c6601803b9f;p=lyx.git diff --git a/src/mathed/math_extern.C b/src/mathed/math_extern.C index 908c6f73ed..f595b1b168 100644 --- a/src/mathed/math_extern.C +++ b/src/mathed/math_extern.C @@ -1,30 +1,121 @@ - // This file contains most of the magic that extracts "context // information" from the unstructered layout-oriented stuff in an // MathArray. +#include +#include "math_amsarrayinset.h" +#include "math_arrayinset.h" #include "math_charinset.h" #include "math_deliminset.h" +#include "math_diffinset.h" #include "math_exfuncinset.h" -#include "math_funcinset.h" +#include "math_exintinset.h" +#include "math_fracinset.h" #include "math_matrixinset.h" #include "math_mathmlstream.h" +#include "math_numberinset.h" #include "math_scriptinset.h" #include "math_stringinset.h" +#include "math_symbolinset.h" +#include "math_unknowninset.h" +#include "math_parser.h" +#include "Lsstream.h" #include "debug.h" +#include "support/lyxlib.h" +#include "support/systemcall.h" +#include "support/filetools.h" + +#include + +using std::ostream; +using std::istringstream; +using std::find_if; +using std::endl; -std::ostream & operator<<(std::ostream & os, MathArray const & ar) +ostream & operator<<(ostream & os, MathArray const & ar) { - NormalStream ns(os); + NormalStream ns(os); ns << ar; return os; } +// define a function for tests +typedef bool TestItemFunc(MathInset *); + +// define a function for replacing subexpressions +typedef MathInset * ReplaceArgumentFunc(const MathArray & ar); + + + +// try to extract a super/subscript +// modify iterator position to point behind the thing +bool extractScript(MathArray & ar, + MathArray::iterator & pos, MathArray::iterator last) +{ + // nothing to get here + if (pos == last) + return false; + + // is this a scriptinset? + if (!(*pos)->asScriptInset()) + return false; + + // it is a scriptinset, use it. + ar.push_back(*pos); + ++pos; + return true; +} + + +// try to extract an "argument" to some function. +// returns position behind the argument +MathArray::iterator extractArgument(MathArray & ar, + MathArray::iterator pos, MathArray::iterator last, string const & = "") +{ + // nothing to get here + if (pos == last) + return pos; + + // something deliminited _is_ an argument + if ((*pos)->asDelimInset()) { + ar.push_back(*pos); + return pos + 1; + } + + // always take the first thing, no matter what it is + ar.push_back(*pos); + + // go ahead if possible + ++pos; + if (pos == last) + return pos; + + // if the next item is a subscript, it most certainly belongs to the + // thing we have + extractScript(ar, pos, last); + if (pos == last) + return pos; + + // but it might be more than that. + // FIXME: not implemented + //for (MathArray::iterator it = pos + 1; it != last; ++it) { + // // always take the first thing, no matter + // if (it == pos) { + // ar.push_back(*it); + // continue; + // } + //} + return pos; +} + + MathScriptInset const * asScript(MathArray::const_iterator it) { + if (!it->nucleus()) + return 0; if (it->nucleus()->asScriptInset()) return 0; ++it; @@ -37,142 +128,313 @@ MathScriptInset const * asScript(MathArray::const_iterator it) // returns sequence of char with same code starting at it up to end // it might be less, though... -string charSequence(MathArray::const_iterator it, MathArray::const_iterator end) +string charSequence + (MathArray::const_iterator it, MathArray::const_iterator end) { string s; - MathCharInset const * p = it->nucleus()->asCharInset(); - if (p) { - for (MathTextCodes c = p->code(); it != end; ++it) { - if (!it->nucleus()) - break; - p = it->nucleus()->asCharInset(); - if (!p || p->code() != c) - break; - s += p->getChar(); - } - } + for (; it != end && (*it)->asCharInset(); ++it) + s += (*it)->getChar(); return s; } -void extractStrings(MathArray & dat) +void extractStrings(MathArray & ar) { //lyxerr << "\nStrings from: " << ar << "\n"; - MathArray ar; - MathArray::const_iterator it = dat.begin(); - while (it != dat.end()) { - if (it->nucleus() && it->nucleus()->asCharInset()) { - string s = charSequence(it, dat.end()); - MathTextCodes c = it->nucleus()->asCharInset()->code(); - ar.push_back(MathAtom(new MathStringInset(s, c))); - it += s.size(); - } else { - ar.push_back(*it); - ++it; - } + for (MathArray::size_type i = 0; i < ar.size(); ++i) { + if (!ar[i]->asCharInset()) + continue; + string s = charSequence(ar.begin() + i, ar.end()); + ar[i].reset(new MathStringInset(s)); + ar.erase(i + 1, i + s.size()); } - ar.swap(dat); //lyxerr << "\nStrings to: " << ar << "\n"; } -bool needAsterisk(MathAtom const &, MathAtom const &) -{ - return false; -} - - -void guessAsterisks(MathArray & dat) -{ - if (dat.size() <= 1) - return; - MathArray ar; - ar.push_back(*dat.begin()); - MathArray::const_iterator it = dat.begin(); - MathArray::const_iterator jt = it + 1; - for (; jt != dat.end(); ++it, ++jt) { - if (needAsterisk(*it, *jt)) - ar.push_back(MathAtom(new MathCharInset('*'))); - ar.push_back(*it); - } - ar.push_back(*dat.end()); - ar.swap(dat); -} - - MathInset * singleItem(MathArray & ar) { - lyxerr << "ar.size: " << ar.size() << "\n"; - //lyxerr << "ar.begin: " << ar.begin() << "\n"; - //lyxerr << "ar.nuc: " << ar.begin()->nucleus() << "\n"; - lyxerr << "ar.nuc: " << *ar.begin()->nucleus() << "\n"; return ar.size() == 1 ? ar.begin()->nucleus() : 0; } void extractMatrices(MathArray & ar) { - lyxerr << "\nMatrices from: " << ar << "\n"; + //lyxerr << "\nMatrices from: " << ar << "\n"; + // first pass for explicitly delimited stuff for (MathArray::iterator it = ar.begin(); it != ar.end(); ++it) { - if (!it->nucleus()) - continue; - MathDelimInset * del = it->nucleus()->asDelimInset(); + MathDelimInset * del = (*it)->asDelimInset(); if (!del) continue; MathInset * arr = singleItem(del->cell(0)); - if (!arr || !arr->asArrayInset()) + if (!arr || !arr->asGridInset()) continue; - *it = MathAtom(new MathMatrixInset(*(arr->asArrayInset()))); - lyxerr << "\nMatrices to: " << ar << "\n"; + *it = MathAtom(new MathMatrixInset(*(arr->asGridInset()))); } -} + + // second pass for AMS "pmatrix" etc + for (MathArray::iterator it = ar.begin(); it != ar.end(); ++it) { + MathAMSArrayInset * ams = (*it)->asAMSArrayInset(); + if (!ams) + continue; + *it = MathAtom(new MathMatrixInset(*ams)); + } + //lyxerr << "\nMatrices to: " << ar << "\n"; +} + // convert this inset somehow to a string -string extractString(MathInset * p) +bool extractString(MathInset * p, string & str) { - if (p && p->getChar()) - return string(1, p->getChar()); - if (p && p->asStringInset()) - return p->asStringInset()->str(); - return string(); + if (!p) + return false; + if (p->getChar()) { + str = string(1, p->getChar()); + return true; + } + if (p->asStringInset()) { + str = p->asStringInset()->str(); + return true; + } + return false; } -// replace '('...')' sequences by a real MathDelimInset -void extractDelims(MathArray & ar) { +// convert this inset somehow to a number +bool extractNumber(MathArray const & ar, int & i) +{ + istringstream is(charSequence(ar.begin(), ar.end()).c_str()); + is >> i; + return is; +} + + +bool extractNumber(MathArray const & ar, double & d) +{ + istringstream is(charSequence(ar.begin(), ar.end()).c_str()); + is >> d; + return is; +} + + +bool testString(MathInset * p, const string & str) +{ + string s; + return extractString(p, s) && str == s; +} + + +// search end of nested sequence +MathArray::iterator endNestSearch( + MathArray::iterator it, + MathArray::iterator last, + TestItemFunc testOpen, + TestItemFunc testClose +) +{ + for (int level = 0; it != last; ++it) { + if (testOpen(it->nucleus())) + ++level; + if (testClose(it->nucleus())) + --level; + if (level == 0) + break; + } + return it; +} + + +// replace nested sequences by a real Insets +void replaceNested( + MathArray & ar, + TestItemFunc testOpen, + TestItemFunc testClose, + ReplaceArgumentFunc replaceArg +) +{ // use indices rather than iterators for the loop because we are going // to modify the array. - lyxerr << "\nDelims from: " << ar << "\n"; for (MathArray::size_type i = 0; i < ar.size(); ++i) { + // check whether this is the begin of the sequence MathArray::iterator it = ar.begin() + i; - if (extractString(it->nucleus()) != "(") + if (!testOpen(it->nucleus())) continue; - // search matching closing paranthesis - int level = 1; - MathArray::iterator jt = it + 1; - for (; jt != ar.end(); ++jt) { - string s = extractString(jt->nucleus()); - if (s == "(") - ++level; - if (s == ")") - --level; - if (level == 0) - break; - } + // search end of sequence + MathArray::iterator jt = endNestSearch(it, ar.end(), testOpen, testClose); if (jt == ar.end()) continue; - // create a proper deliminset - MathAtom at(new MathDelimInset("(", ")")); - at->cell(0) = MathArray(it + 1, jt); + // create a proper inset as replacement + MathInset * p = replaceArg(MathArray(it + 1, jt)); // replace the original stuff by the new inset ar.erase(it + 1, jt + 1); - *it = at; - lyxerr << "\nDelims to: " << ar << "\n"; + (*it).reset(p); + } +} + + + +// +// split scripts into seperate super- and subscript insets. sub goes in +// front of super... +// + +void splitScripts(MathArray & ar) +{ + //lyxerr << "\nScripts from: " << ar << "\n"; + for (MathArray::size_type i = 0; i < ar.size(); ++i) { + MathArray::iterator it = ar.begin() + i; + + // is this script inset? + MathScriptInset * p = (*it)->asScriptInset(); + if (!p) + continue; + + // no problem if we don't have both... + if (!p->hasUp() || !p->hasDown()) + continue; + + // create extra script inset and move superscript over + MathScriptInset * q = new MathScriptInset; + q->ensure(true); + q->up().data_.swap(p->up().data_); + p->removeScript(true); + + // insert new inset behind + ++i; + ar.insert(i, MathAtom(q)); + } + //lyxerr << "\nScripts to: " << ar << "\n"; +} + + +// +// extract exp(...) +// + +void extractExps(MathArray & ar) +{ + //lyxerr << "\nExps from: " << ar << "\n"; + + for (MathArray::size_type i = 0; i + 1 < ar.size(); ++i) { + MathArray::iterator it = ar.begin() + i; + + // is this 'e'? + MathCharInset const * p = (*it)->asCharInset(); + if (!p || p->getChar() != 'e') + continue; + + // we need an exponent but no subscript + MathScriptInset * sup = (*(it + 1))->asScriptInset(); + if (!sup || sup->hasDown()) + continue; + + // create a proper exp-inset as replacement + *it = new MathExFuncInset("exp", sup->cell(1)); + ar.erase(it + 1); } -} + //lyxerr << "\nExps to: " << ar << "\n"; +} + + +// +// extract det(...) from |matrix| +// +void extractDets(MathArray & ar) +{ + //lyxerr << "\ndet from: " << ar << "\n"; + for (MathArray::iterator it = ar.begin(); it != ar.end(); ++it) { + MathDelimInset * del = (*it)->asDelimInset(); + if (!del) + continue; + if (!del->isAbs()) + continue; + *it = new MathExFuncInset("det", del->cell(0)); + } + //lyxerr << "\ndet to: " << ar << "\n"; +} + + +// +// search numbers +// + +bool isDigitOrSimilar(char c) +{ + return ('0' <= c && c <= '9') || c == '.'; +} + + +// returns sequence of digits +string digitSequence + (MathArray::const_iterator it, MathArray::const_iterator end) +{ + string s; + for (; it != end && (*it)->asCharInset(); ++it) { + if (!isDigitOrSimilar((*it)->getChar())) + break; + s += (*it)->getChar(); + } + return s; +} + + +void extractNumbers(MathArray & ar) +{ + //lyxerr << "\nNumbers from: " << ar << "\n"; + for (MathArray::size_type i = 0; i < ar.size(); ++i) { + if (!ar[i]->asCharInset()) + continue; + if (!isDigitOrSimilar(ar[i]->asCharInset()->getChar())) + continue; + + string s = digitSequence(ar.begin() + i, ar.end()); + + ar[i].reset(new MathNumberInset(s)); + ar.erase(i + 1, i + s.size()); + } + //lyxerr << "\nNumbers to: " << ar << "\n"; +} + + + +// +// search deliminiters +// + +bool testOpenParan(MathInset * p) +{ + return testString(p, "("); +} + + +bool testCloseParan(MathInset * p) +{ + return testString(p, ")"); +} + + +MathInset * replaceDelims(const MathArray & ar) +{ + return new MathDelimInset("(", ")", ar); +} + + +// replace '('...')' sequences by a real MathDelimInset +void extractDelims(MathArray & ar) +{ + //lyxerr << "\nDelims from: " << ar << "\n"; + replaceNested(ar, testOpenParan, testCloseParan, replaceDelims); + //lyxerr << "\nDelims to: " << ar << "\n"; +} + + + +// +// search well-known functions +// // replace 'f' '(...)' and 'f' '^n' '(...)' sequences by a real MathExFuncInset @@ -183,55 +445,340 @@ void extractFunctions(MathArray & ar) if (ar.size() <= 1) return; - lyxerr << "\nFunctions from: " << ar << "\n"; - for (MathArray::size_type i = 0; i < ar.size() - 1; ++i) { + //lyxerr << "\nFunctions from: " << ar << "\n"; + for (MathArray::size_type i = 0; i + 1 < ar.size(); ++i) { MathArray::iterator it = ar.begin() + i; - - // is this a function name? - if (!it->nucleus()) - continue; - MathFuncInset * func = (*it)->asFuncInset(); - if (!func) - continue; - - // do we have an exponent? - // simply skippping the postion does the right thing: - // 'sin' '^2' 'x' -> 'sin(x)' '^2' MathArray::iterator jt = it + 1; - if (MathScriptInset * script = (*jt)->asScriptInset()) { - // allow superscripts only - if (script->hasDown()) + + string name; + // is it a function? + if ((*it)->asUnknownInset()) { + // it certainly is if it is well known... + name = (*it)->asUnknownInset()->name(); + } else { + // is this a user defined function? + // it it probably not, if it doesn't have a name. + if (!extractString((*it).nucleus(), name)) continue; - ++jt; + // it is not if it has no argument if (jt == ar.end()) continue; + // guess so, if this is followed by + // a DelimInset with a single item in the cell + MathDelimInset * del = (*jt)->asDelimInset(); + if (!del || del->cell(0).size() != 1) + continue; + // fall trough into main branch } - // jt points now to the "argument". Since we had run "extractDelims" - // before, this could be a single argument only. Get hold of this. - MathArray arg; - MathDelimInset * del = (*jt)->asDelimInset(); - if (del && del->isParanthesis()) - arg = del->cell(0); - else - arg.push_back(*jt); + // do we have an exponent like in + // 'sin' '^2' 'x' -> 'sin(x)' '^2' + MathArray exp; + extractScript(exp, jt, ar.end()); + + // create a proper inset as replacement + MathExFuncInset * p = new MathExFuncInset(name); + + // jt points to the "argument". Get hold of this. + MathArray::iterator st = extractArgument(p->cell(0), jt, ar.end()); // replace the function name by a real function inset - (*it).reset(new MathExFuncInset(func->name(), arg)); - + (*it).reset(p); + // remove the source of the argument from the array - ar.erase(jt); - lyxerr << "\nFunctions to: " << ar << "\n"; + ar.erase(it + 1, st); + + // re-insert exponent + ar.insert(i + 1, exp); + //lyxerr << "\nFunctions to: " << ar << "\n"; + } +} + + +// +// search integrals +// + +bool testSymbol(MathInset * p, string const & name) +{ + return p->asSymbolInset() && p->asSymbolInset()->name() == name; +} + + +bool testIntSymbol(MathInset * p) +{ + return testSymbol(p, "int"); +} + + +bool testIntDiff(MathInset * p) +{ + return testString(p, "d"); +} + + +// replace '\int' ['_^'] x 'd''x'(...)' sequences by a real MathExIntInset +// assume 'extractDelims' ran before +void extractIntegrals(MathArray & ar) +{ + // we need at least three items... + if (ar.size() <= 2) + return; + + //lyxerr << "\nIntegrals from: " << ar << "\n"; + for (MathArray::size_type i = 0; i + 1 < ar.size(); ++i) { + MathArray::iterator it = ar.begin() + i; + + // is this a integral name? + if (!testIntSymbol(it->nucleus())) + continue; + + // search 'd' + MathArray::iterator jt = + endNestSearch(it, ar.end(), testIntSymbol, testIntDiff); + + // something sensible found? + if (jt == ar.end()) + continue; + + // create a proper inset as replacement + MathExIntInset * p = new MathExIntInset("int"); + + // collect subscript if any + MathArray::iterator st = it + 1; + if (st != ar.end()) + if (MathScriptInset * sub = (*st)->asScriptInset()) + if (sub->hasDown()) { + p->cell(2) = sub->down().data_; + ++st; + } + + // collect superscript if any + if (st != ar.end()) + if (MathScriptInset * sup = (*st)->asScriptInset()) + if (sup->hasUp()) { + p->cell(3) = sup->up().data_; + ++st; + } + + // core ist part from behind the scripts to the 'd' + p->cell(0) = MathArray(st, jt); + + // use the "thing" behind the 'd' as differential + MathArray::iterator tt = extractArgument(p->cell(1), jt + 1, ar.end()); + + // remove used parts + ar.erase(it + 1, tt); + (*it).reset(p); + } + //lyxerr << "\nIntegrals to: " << ar << "\n"; +} + + +// +// search sums +// + +bool testSumSymbol(MathInset * p) +{ + return testSymbol(p, "sum"); +} + + +bool testEqualSign(MathAtom const & at) +{ + return testString(at.nucleus(), "="); +} + + + +// replace '\sum' ['_^'] f(x) sequences by a real MathExIntInset +// assume 'extractDelims' ran before +void extractSums(MathArray & ar) +{ + // we need at least two items... + if (ar.size() <= 1) + return; + + //lyxerr << "\nSums from: " << ar << "\n"; + for (MathArray::size_type i = 0; i + 1< ar.size(); ++i) { + MathArray::iterator it = ar.begin() + i; + + // is this a sum name? + if (!testSumSymbol(it->nucleus())) + continue; + + // create a proper inset as replacement + MathExIntInset * p = new MathExIntInset("sum"); + + // collect lower bound and summation index + MathArray::iterator st = it + 1; + if (st != ar.end()) + if (MathScriptInset * sub = (*st)->asScriptInset()) + if (sub->hasDown()) { + // try to figure out the summation index from the subscript + MathArray & ar = sub->down().data_; + MathArray::iterator it = + find_if(ar.begin(), ar.end(), &testEqualSign); + if (it != ar.end()) { + // we found a '=', use everything in front of that as index, + // and everything behind as lower index + p->cell(1) = MathArray(ar.begin(), it); + p->cell(2) = MathArray(it + 1, ar.end()); + } else { + // use everything as summation index, don't use scripts. + p->cell(1) = ar; + } + ++st; + } + + // collect upper bound + if (st != ar.end()) + if (MathScriptInset * sup = (*st)->asScriptInset()) + if (sup->hasUp()) { + p->cell(3) = sup->up().data_; + ++st; + } + + // use some behind the script as core + MathArray::iterator tt = extractArgument(p->cell(0), st, ar.end()); + + // cleanup + ar.erase(it + 1, tt); + (*it).reset(p); + } + //lyxerr << "\nSums to: " << ar << "\n"; +} + + +// +// search differential stuff +// + +// tests for 'd' or '\partial' +bool testDiffItem(MathAtom const & at) +{ + return testString(at.nucleus(), "d"); +} + + +bool testDiffArray(MathArray const & ar) +{ + return ar.size() && testDiffItem(ar.front()); +} + + +bool testDiffFrac(MathInset * p) +{ + MathFracInset * f = p->asFracInset(); + return f && testDiffArray(f->cell(0)) && testDiffArray(f->cell(1)); +} + + +// is this something like ^number? +bool extractDiffExponent(MathArray::iterator it, int & i) +{ + if (!(*it)->asScriptInset()) + return false; + + string s; + if (!extractString((*it).nucleus(), s)) + return false; + istringstream is(s.c_str()); + is >> i; + return is; +} + + +void extractDiff(MathArray & ar) +{ + //lyxerr << "\nDiffs from: " << ar << "\n"; + for (MathArray::size_type i = 0; i < ar.size(); ++i) { + MathArray::iterator it = ar.begin() + i; + + // is this a "differential fraction"? + if (!testDiffFrac(it->nucleus())) + continue; + + MathFracInset * f = (*it)->asFracInset(); + if (!f) { + lyxerr << "should not happen\n"; + continue; + } + + // create a proper diff inset + MathDiffInset * diff = new MathDiffInset; + + // collect function, let jt point behind last used item + MathArray::iterator jt = it + 1; + //int n = 1; + MathArray & numer = f->cell(0); + if (numer.size() > 1 && numer[1]->asScriptInset()) { + // this is something like d^n f(x) / d... or d^n / d... + // FIXME + //n = 1; + if (numer.size() > 2) + diff->cell(0) = MathArray(numer.begin() + 2, numer.end()); + else + jt = extractArgument(diff->cell(0), jt, ar.end()); + } else { + // simply d f(x) / d... or d/d... + if (numer.size() > 1) + diff->cell(0) = MathArray(numer.begin() + 1, numer.end()); + else + jt = extractArgument(diff->cell(0), jt, ar.end()); + } + + // collect denominator parts + MathArray & denom = f->cell(1); + for (MathArray::iterator dt = denom.begin(); dt != denom.end();) { + // find the next 'd' + MathArray::iterator et = find_if(dt + 1, denom.end(), &testDiffItem); + + // point before this + MathArray::iterator st = et - 1; + MathScriptInset * script = (*st)->asScriptInset(); + if (script && script->hasUp()) { + // things like d.../dx^n + int mult = 1; + if (extractNumber(script->up().data_, mult)) { + //lyxerr << "mult: " << mult << endl; + for (int i = 0; i < mult; ++i) + diff->addDer(MathArray(dt + 1, st)); + } + } else { + // just d.../dx + diff->addDer(MathArray(dt + 1, et)); + } + dt = et; + } + + // cleanup + ar.erase(it + 1, jt); + (*it).reset(diff); } -} + //lyxerr << "\nDiffs to: " << ar << "\n"; +} + + +// +// combine searches +// void extractStructure(MathArray & ar) { - extractStrings(ar); + splitScripts(ar); + extractNumbers(ar); extractMatrices(ar); extractDelims(ar); extractFunctions(ar); + extractDets(ar); + extractIntegrals(ar); + extractSums(ar); + extractDiff(ar); + extractExps(ar); + extractStrings(ar); } @@ -240,13 +787,14 @@ void write(MathArray const & dat, WriteStream & wi) MathArray ar = dat; extractStrings(ar); for (MathArray::const_iterator it = ar.begin(); it != ar.end(); ++it) { + wi.firstitem() = (it == ar.begin()); MathInset const * p = it->nucleus(); if (it + 1 != ar.end()) { if (MathScriptInset const * q = asScript(it)) { - q->write(p, wi); + q->write2(p, wi); ++it; continue; - } + } } p->write(wi); } @@ -268,8 +816,8 @@ void octavize(MathArray const & dat, OctaveStream & os) MathInset const * p = it->nucleus(); if (it + 1 != ar.end()) { if (MathScriptInset const * q = asScript(it)) { - q->octavize(p, os); - ++it; + q->octavize2(p, os); + ++it; continue; } } @@ -286,8 +834,8 @@ void maplize(MathArray const & dat, MapleStream & os) MathInset const * p = it->nucleus(); if (it + 1 != ar.end()) { if (MathScriptInset const * q = asScript(it)) { - q->maplize(p, os); - ++it; + q->maplize2(p, os); + ++it; continue; } } @@ -310,8 +858,8 @@ void mathmlize(MathArray const & dat, MathMLStream & os) MathInset const * p = it->nucleus(); if (it + 1 != ar.end()) { if (MathScriptInset const * q = asScript(it)) { - q->mathmlize(p, os); - ++it; + q->mathmlize2(p, os); + ++it; continue; } } @@ -321,3 +869,200 @@ void mathmlize(MathArray const & dat, MathMLStream & os) } } + + + +namespace { + + string captureOutput(string const & cmd, string const & data) + { + string outfile = lyx::tempName(string(), "mathextern"); + string full = "echo '" + data + "' | (" + cmd + ") > " + outfile; + lyxerr << "calling: " << full << endl; + Systemcall dummy; + dummy.startscript(Systemcall::Wait, full); + string out = GetFileContents(outfile); + lyx::unlink(outfile); + lyxerr << "result: '" << out << "'" << endl; + return out; + } + + + MathArray pipeThroughMaple(string const & extra, MathArray const & ar) + { + string header = "readlib(latex):\n"; + + // remove the \\it for variable names + //"#`latex/csname_font` := `\\it `:" + header += + "`latex/csname_font` := ``:\n"; + + // export matrices in (...) instead of [...] + header += + "`latex/latex/matrix` := " + "subs(`[`=`(`, `]`=`)`," + "eval(`latex/latex/matrix`)):\n"; + + // replace \\cdots with proper '*' + header += + "`latex/latex/*` := " + "subs(`\\,`=`\\cdot `," + "eval(`latex/latex/*`)):\n"; + + // remove spurious \\noalign{\\medskip} in matrix output + header += + "`latex/latex/matrix`:= " + "subs(`\\\\\\\\\\\\noalign{\\\\medskip}` = `\\\\\\\\`," + "eval(`latex/latex/matrix`)):\n"; + + //"#`latex/latex/symbol` " + // " := subs((\\'_\\' = \\'`\\_`\\',eval(`latex/latex/symbol`)): "; + + string trailer = "quit;"; + ostringstream os; + MapleStream ms(os); + ms << ar; + string expr = os.str().c_str(); + lyxerr << "ar: '" << ar << "'\n"; + lyxerr << "ms: '" << os.str() << "'\n"; + + for (int i = 0; i < 100; ++i) { // at most 100 attempts + // try to fix missing '*' the hard way by using mint + // + // ... > echo "1A;" | mint -i 1 -S -s -q + // on line 1: 1A; + // ^ syntax error - + // Probably missing an operator such as * p + // + lyxerr << "checking expr: '" << expr << "'\n"; + string out = captureOutput("mint -i 1 -S -s -q -q", expr + ";"); + if (out.empty()) + break; // expression syntax is ok + istringstream is(out.c_str()); + string line; + getline(is, line); + if (line.find("on line") != 0) + break; // error message not identified + getline(is, line); + string::size_type pos = line.find('^'); + if (pos == string::npos || pos < 15) + break; // caret position not found + pos -= 15; // skip the "on line ..." part + if (expr[pos] == '*' || (pos > 0 && expr[pos - 1] == '*')) + break; // two '*' in a row are definitely bad + expr.insert(pos, "*"); + } + + string full = "latex(" + extra + '(' + expr + "));"; + string out = captureOutput("maple -q", header + full + trailer); + + // change \_ into _ + + // + MathArray res; + mathed_parse_cell(res, out); + return res; + } + + + MathArray pipeThroughOctave(string const &, MathArray const & ar) + { + ostringstream os; + OctaveStream vs(os); + vs << ar; + string expr = os.str().c_str(); + string out; + + lyxerr << "pipe: ar: '" << ar << "'\n"; + lyxerr << "pipe: expr: '" << expr << "'\n"; + + for (int i = 0; i < 100; ++i) { // at most 100 attempts + // + // try to fix missing '*' the hard way + // parse error: + // >>> ([[1 2 3 ];[2 3 1 ];[3 1 2 ]])([[1 2 3 ];[2 3 1 ];[3 1 2 ]]) + // ^ + // + lyxerr << "checking expr: '" << expr << "'\n"; + out = captureOutput("octave -q 2>&1", expr); + lyxerr << "checking out: '" << out << "'\n"; + + // leave loop if expression syntax is probably ok + if (out.find("parse error:") == string::npos) + break; + + // search line with single caret + istringstream is(out.c_str()); + string line; + while (is) { + getline(is, line); + lyxerr << "skipping line: '" << line << "'\n"; + if (line.find(">>> ") != string::npos) + break; + } + + // found line with error, next line is the one with caret + getline(is, line); + string::size_type pos = line.find('^'); + lyxerr << "caret line: '" << line << "'\n"; + lyxerr << "found caret at pos: '" << pos << "'\n"; + if (pos == string::npos || pos < 4) + break; // caret position not found + pos -= 4; // skip the ">>> " part + if (expr[pos] == '*') + break; // two '*' in a row are definitely bad + expr.insert(pos, "*"); + } + + if (out.size() < 6) + return MathArray(); + + // remove 'ans = ' + out = out.substr(6); + + // parse output as matrix or single number + MathAtom at(new MathArrayInset("array", out)); + MathArrayInset const * mat = at.nucleus()->asArrayInset(); + MathArray res; + if (mat->ncols() == 1 && mat->nrows() == 1) + res.push_back(mat->cell(0)); + else { + res.push_back(MathAtom(new MathDelimInset("(", ")"))); + res.back()->cell(0).push_back(at); + } + return res; + } + +} + + +MathArray pipeThroughExtern(string const & lang, string const & extra, + MathArray const & ar) +{ + if (lang == "octave") + return pipeThroughOctave(extra, ar); + + if (lang == "maple") + return pipeThroughMaple(extra, ar); + + // create normalized expression + ostringstream os; + NormalStream ns(os); + os << "[" << extra << ' '; + ns << ar; + os << "]"; + string data = os.str().c_str(); + + // search external script + string file = LibFileSearch("mathed", "extern_" + lang); + if (file.empty()) { + lyxerr << "converter to '" << lang << "' not found\n"; + return MathArray(); + } + + // run external sript + string out = captureOutput(file, data); + MathArray res; + mathed_parse_cell(res, out); + return res; +}