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MathMLbuilder.c
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MathML: extending MathML implementation to comply with the MathML 2.0
draft of 11 Feb. 2000
New elements: menclose, mchar, mglyph, mlabeledtr (with their attributes)
New attributes: Global: xref; mfrac: numalign, denomalign, beveled;
mtable: columnwidth, side, minlabelspacing
VQ.
/*
*
* (c) COPYRIGHT MIT and INRIA, 1996.
* Please first read the full copyright statement in file COPYRIGHT.
*
*/
/*
*
* MathMLbuilder
*
* Author: V. Quint
*/
#define THOT_EXPORT extern
#include "amaya.h"
#include "css.h"
#include "undo.h"
#include "MathML.h"
#include "parser.h"
#include "html2thot_f.h"
typedef CHAR_T MathEntityName[30];
typedef struct _MathEntity
{ /* a Math entity representing an operator char */
MathEntityName MentityName; /* entity name */
int charCode; /* decimal code of char */
CHAR_T alphabet; /* 'L' = ISO-Latin-1, 'G' = Symbol */
}
MathEntity;
static MathEntity MathEntityTable[] =
{
/* This table MUST be in alphabetical order */
/* This table contains characters from the Symbol font plus some
specific MathML entities */
{TEXT("Agr"), 65, 'G'},
{TEXT("And"), 217, 'G'},
{TEXT("ApplyFunction"), 32, 'L'}, /* render as white space */
{TEXT("Backslash"), 92, 'L'},
{TEXT("Bgr"), 66, 'G'},
{TEXT("Cap"), 199, 'G'},
{TEXT("CenterDot"), 215, 'G'},
{TEXT("CirclePlus"), 197, 'G'},
{TEXT("CircleTimes"), 196, 'G'},
{TEXT("Colon"), 58, 'G'},
{TEXT("Congruent"), 64, 'G'},
{TEXT("Cup"), 200, 'G'},
{TEXT("Delta"), 68, 'G'},
{TEXT("Diamond"), 168, 'G'},
{TEXT("DoubleDownArrow"), 223, 'G'},
{TEXT("DoubleLeftArrow"), 220, 'G'},
{TEXT("DoubleLeftRightArrow"), 219, 'G'},
{TEXT("DoubleRightArrow"), 222, 'G'},
{TEXT("DoubleUpArrow"), 221, 'G'},
{TEXT("DownArrow"), 175, 'G'},
{TEXT("DownTee"), 94, 'G'},
{TEXT("EEgr"), 72, 'G'},
{TEXT("Egr"), 69, 'G'},
{TEXT("Element"), 206, 'G'},
{TEXT("Equal"), 61, 'L'},
{TEXT("EqualTilde"), 64, 'G'},
{TEXT("Exists"), 36, 'G'},
{TEXT("ForAll"), 34, 'G'},
{TEXT("Gamma"), 71, 'G'},
{TEXT("GreaterEqual"), 179, 'G'},
{TEXT("Igr"), 73, 'G'},
{TEXT("Integral"), 242, 'G'},
{TEXT("Intersection"), 199, 'G'},
{TEXT("InvisibleTimes"), 0, SPACE},
{TEXT("Kgr"), 75, 'G'},
{TEXT("KHgr"), 67, 'G'},
{TEXT("Lambda"), 76, 'G'},
{TEXT("LeftArrow"), 172, 'G'},
{TEXT("LeftRightArrow"), 171, 'G'},
{TEXT("Mgr"), 77, 'G'},
{TEXT("Ngr"), 78, 'G'},
{TEXT("NonBreakingSpace"), 160, 'L'},
{TEXT("Not"), 216, 'G'},
{TEXT("NotElement"), 207, 'G'},
{TEXT("NotEqual"), 185, 'G'},
{TEXT("NotSubset"), 203, 'G'},
{TEXT("Ogr"), 79, 'G'},
{TEXT("Omega"), 87, 'G'},
{TEXT("Or"), 218, 'G'},
{TEXT("PI"), 213, 'G'},
{TEXT("PartialD"), 182, 'G'},
{TEXT("Phi"), 70, 'G'},
{TEXT("Pi"), 80, 'G'},
{TEXT("PlusMinus"), 177, 'G'},
{TEXT("Product"), 213, 'G'},
{TEXT("Proportional"), 181, 'G'},
{TEXT("Psi"), 89, 'G'},
{TEXT("Rgr"), 82, 'G'},
{TEXT("RightArrow"), 174, 'G'},
{TEXT("Sigma"), 83, 'G'},
{TEXT("Sol"), 164, 'G'},
{TEXT("Star"), 42, 'L'},
{TEXT("Subset"), 204, 'G'},
{TEXT("SubsetEqual"), 205, 'G'},
{TEXT("SuchThat"), 39, 'G'},
{TEXT("Sum"), 229, 'G'},
{TEXT("Superset"), 201, 'G'},
{TEXT("SupersetEqual"), 202, 'G'},
{TEXT("Tgr"), 84, 'G'},
{TEXT("Therefore"), 92, 'G'},
{TEXT("Theta"), 81, 'G'},
{TEXT("Tilde"), 126, 'L'},
{TEXT("TripleDot"), 188, 'G'},
{TEXT("Union"), 200, 'G'},
{TEXT("UpArrow"), 173, 'G'},
{TEXT("Upsi"), 85, 'G'},
{TEXT("Upsi1"), 161, 'G'},
{TEXT("Vee"), 218, 'G'},
{TEXT("Verbar"), 189, 'G'},
{TEXT("VerticalBar"), 124, 'L'},
{TEXT("Xi"), 88, 'G'},
{TEXT("Zgr"), 90, 'G'},
{TEXT("af"), 32, 'L'}, /* render as white space */
{TEXT("aleph"), 192, 'G'},
{TEXT("alpha"), 97, 'G'},
{TEXT("and"), 217, 'G'},
{TEXT("angle"), 208, 'G'},
{TEXT("ap"), 187, 'G'},
{TEXT("beta"), 98, 'G'},
{TEXT("bottom"), 94, 'G'},
{TEXT("bull"), 183, 'G'},
{TEXT("cap"), 199, 'G'},
{TEXT("chi"), 99, 'G'},
{TEXT("clubs"), 167, 'G'},
{TEXT("cong"), 64, 'G'},
{TEXT("copysf"), 211, 'G'},
{TEXT("copyssf"), 227, 'G'},
{TEXT("cr"), 191, 'G'},
{TEXT("cup"), 200, 'G'},
{TEXT("darr"), 175, 'G'},
{TEXT("dArr"), 223, 'G'},
{TEXT("dd"), 100, 'L'},
{TEXT("deg"), 176, 'G'},
{TEXT("delta"), 100, 'G'},
{TEXT("diams"), 168, 'G'},
{TEXT("divide"), 184, 'G'},
{TEXT("dtri"), 209, 'G'},
{TEXT("ee"), 101, 'L'},
{TEXT("empty"), 198, 'G'},
{TEXT("emsp"), 32, 'G'},
{TEXT("epsiv"), 101, 'G'},
{TEXT("equiv"), 186, 'G'},
{TEXT("eta"), 104, 'G'},
{TEXT("exist"), 36, 'G'},
{TEXT("florin"), 166, 'G'},
{TEXT("forall"), 34, 'G'},
{TEXT("gamma"), 103, 'G'},
{TEXT("ge"), 179, 'G'},
{TEXT("gt"), 62, 'L'},
{TEXT("hearts"), 169, 'G'},
{TEXT("horbar"), 190, 'G'},
{TEXT("ifraktur"), 193, 'G'},
{TEXT("infin"), 165, 'G'},
{TEXT("int"), 242, 'G'},
{TEXT("iota"), 105, 'G'},
{TEXT("isin"), 206, 'G'},
{TEXT("it"), 0, SPACE},
{TEXT("kappa"), 107, 'G'},
{TEXT("lambda"), 108, 'G'},
{TEXT("lang"), 225, 'G'},
{TEXT("larr"), 172, 'G'},
{TEXT("lArr"), 220, 'G'},
{TEXT("le"), 163, 'G'},
{TEXT("lowbar"), 95, 'G'},
{TEXT("loz"), 224, 'G'},
{TEXT("lrarr"), 171, 'G'},
{TEXT("lrArr"), 219, 'G'},
{TEXT("lsqb"), 91, 'G'},
{TEXT("lt"), 60, 'L'},
{TEXT("middot"), 215, 'G'},
{TEXT("mldr"), 188, 'G'},
{TEXT("mu"), 109, 'G'},
{TEXT("ne"), 185, 'G'},
{TEXT("not"), 216, 'G'},
{TEXT("notin"), 207, 'G'},
{TEXT("nu"), 110, 'G'},
{TEXT("ogr"), 111, 'G'},
{TEXT("omega"), 119, 'G'},
{TEXT("oplus"), 197, 'G'},
{TEXT("or"), 218, 'G'},
{TEXT("otimes"), 196, 'G'},
{TEXT("part"), 182, 'G'},
{TEXT("phi"), 102, 'G'},
{TEXT("phiv"), 106, 'G'},
{TEXT("pi"), 112, 'G'},
{TEXT("piv"), 118, 'G'},
{TEXT("prop"), 181, 'G'},
{TEXT("psi"), 121, 'G'},
{TEXT("radic"), 214, 'G'},
{TEXT("rarr"), 174, 'G'},
{TEXT("rArr"), 222, 'G'},
{TEXT("rdquo"), 178, 'G'},
{TEXT("regsf"), 210, 'G'},
{TEXT("regssf"), 226, 'G'},
{TEXT("rfraktur"), 194, 'G'},
{TEXT("rho"), 114, 'G'},
{TEXT("rsqb"), 93, 'G'},
{TEXT("sigma"), 115, 'G'},
{TEXT("sigmav"), 86, 'G'},
{TEXT("spades"), 170, 'G'},
{TEXT("sub"), 204, 'G'},
{TEXT("sube"), 205, 'G'},
{TEXT("subne"), 203, 'G'},
{TEXT("sum"), 229, 'G'},
{TEXT("sup"), 201, 'G'},
{TEXT("supe"), 202, 'G'},
{TEXT("tau"), 116, 'G'},
{TEXT("there4"), 92, 'G'},
{TEXT("theta"), 113, 'G'},
{TEXT("thetav"), 74, 'G'},
{TEXT("thickspace"), 32, 'L'},
{TEXT("times"), 180, 'G'},
{TEXT("trade"), 212, 'G'},
{TEXT("tradesf"), 212, 'G'},
{TEXT("tradessf"), 228, 'G'},
{TEXT("uarr"), 173, 'G'},
{TEXT("uArr"), 221, 'G'},
{TEXT("upsi"), 117, 'G'},
{TEXT("vee"), 218, 'G'},
{TEXT("weierp"), 195, 'G'},
{TEXT("xi"), 120, 'G'},
{TEXT("zeta"), 122, 'G'},
{TEXT("zzzz"), -1, SPACE} /* this last entry is required */
};
static AttributeMapping MathMLAttributeMappingTable[] =
{
/* The first entry MUST be unknown_attr */
/* The rest of this table MUST be in alphabetical order */
{TEXT("unknown_attr"), TEXT(""), 'A', MathML_ATTR_Invalid_attribute},
{TEXT("accent"), TEXT(""), 'A', MathML_ATTR_accent},
{TEXT("accentunder"), TEXT(""), 'A', MathML_ATTR_accentunder},
{TEXT("actiontype"), TEXT(""), 'A', MathML_ATTR_actiontype},
{TEXT("align"), TEXT(""), 'A', MathML_ATTR_align},
{TEXT("alignmentscope"), TEXT(""), 'A', MathML_ATTR_alignmentscope},
{TEXT("alt"), TEXT(""), 'A', MathML_ATTR_alt},
{TEXT("background"), TEXT(""), 'A', MathML_ATTR_background_},
{TEXT("beveled"), TEXT(""), 'A', MathML_ATTR_beveled},
{TEXT("class"), TEXT(""), 'A', MathML_ATTR_class},
{TEXT("close"), TEXT(""), 'A', MathML_ATTR_close},
{TEXT("columnalign"), TEXT(""), 'A', MathML_ATTR_columnalign},
{TEXT("columnlines"), TEXT(""), 'A', MathML_ATTR_columnlines},
{TEXT("columnspacing"), TEXT(""), 'A', MathML_ATTR_columnspacing},
{TEXT("columnspan"), TEXT(""), 'A', MathML_ATTR_columnspan},
{TEXT("columnwidth"), TEXT(""), 'A', MathML_ATTR_columnwidth},
{TEXT("color"), TEXT(""), 'A', MathML_ATTR_color},
{TEXT("denomalign"), TEXT(""), 'A', MathML_ATTR_denomalign},
{TEXT("depth"), TEXT(""), 'A', MathML_ATTR_depth_},
{TEXT("displaystyle"), TEXT(""), 'A', MathML_ATTR_displaystyle},
{TEXT("edge"), TEXT(""), 'A', MathML_ATTR_edge},
{TEXT("equalcolumns"), TEXT(""), 'A', MathML_ATTR_equalcolumns},
{TEXT("equalrows"), TEXT(""), 'A', MathML_ATTR_equalrows},
{TEXT("fence"), TEXT(""), 'A', MathML_ATTR_fence},
{TEXT("fontfamily"), TEXT(""), 'A', MathML_ATTR_fontfamily},
{TEXT("fontstyle"), TEXT(""), 'A', MathML_ATTR_fontstyle},
{TEXT("fontsize"), TEXT(""), 'A', MathML_ATTR_fontsize},
{TEXT("fontweight"), TEXT(""), 'A', MathML_ATTR_fontweight},
{TEXT("form"), TEXT(""), 'A', MathML_ATTR_form},
{TEXT("frame"), TEXT(""), 'A', MathML_ATTR_frame},
{TEXT("framespacing"), TEXT(""), 'A', MathML_ATTR_framespacing},
{TEXT("groupalign"), TEXT(""), 'A', MathML_ATTR_groupalign},
{TEXT("height"), TEXT(""), 'A', MathML_ATTR_height_},
{TEXT("id"), TEXT(""), 'A', MathML_ATTR_id},
{TEXT("index"), TEXT(""), 'A', MathML_ATTR_index},
{TEXT("largeop"), TEXT(""), 'A', MathML_ATTR_largeop},
{TEXT("linethickness"), TEXT(""), 'A', MathML_ATTR_linethickness},
{TEXT("link"), TEXT(""), 'A', MathML_ATTR_link},
{TEXT("lquote"), TEXT(""), 'A', MathML_ATTR_lquote},
{TEXT("lspace"), TEXT(""), 'A', MathML_ATTR_lspace},
{TEXT("maxsize"), TEXT(""), 'A', MathML_ATTR_maxsize},
{TEXT("minlabelspacing"), TEXT(""), 'A', MathML_ATTR_minlabelspacing},
{TEXT("minsize"), TEXT(""), 'A', MathML_ATTR_minsize},
{TEXT("movablelimits"), TEXT(""), 'A', MathML_ATTR_movablelimits},
{TEXT("name"), TEXT(""), 'A', MathML_ATTR_name},
{TEXT("notation"), TEXT(""), 'A', MathML_ATTR_notation},
{TEXT("numalign"), TEXT(""), 'A', MathML_ATTR_numalign},
{TEXT("open"), TEXT(""), 'A', MathML_ATTR_open},
{TEXT("other"), TEXT(""), 'A', MathML_ATTR_other},
{TEXT("rowalign"), TEXT(""), 'A', MathML_ATTR_rowalign},
{TEXT("rowlines"), TEXT(""), 'A', MathML_ATTR_rowlines},
{TEXT("rowspacing"), TEXT(""), 'A', MathML_ATTR_rowspacing},
{TEXT("rowspan"), TEXT(""), 'A', MathML_ATTR_rowspan_},
{TEXT("rquote"), TEXT(""), 'A', MathML_ATTR_rquote},
{TEXT("rspace"), TEXT(""), 'A', MathML_ATTR_rspace},
{TEXT("scriptlevel"), TEXT(""), 'A', MathML_ATTR_scriptlevel},
{TEXT("scriptminsize"), TEXT(""), 'A', MathML_ATTR_scriptminsize},
{TEXT("scriptsizemultiplier"), TEXT(""), 'A', MathML_ATTR_scriptsizemultiplier},
{TEXT("selection"), TEXT(""), 'A', MathML_ATTR_selection},
{TEXT("separator"), TEXT(""), 'A', MathML_ATTR_separator},
{TEXT("separators"), TEXT(""), 'A', MathML_ATTR_separators},
{TEXT("side"), TEXT(""), 'A', MathML_ATTR_side},
{TEXT("stretchy"), TEXT(""), 'A', MathML_ATTR_stretchy},
{TEXT("style"), TEXT(""), 'A', MathML_ATTR_style_},
{TEXT("subscriptshift"), TEXT(""), 'A', MathML_ATTR_subscriptshift},
{TEXT("superscriptshift"), TEXT(""), 'A', MathML_ATTR_superscriptshift},
{TEXT("symmetric"), TEXT(""), 'A', MathML_ATTR_symmetric},
{TEXT("width"), TEXT(""), 'A', MathML_ATTR_width_},
{TEXT("xref"), TEXT(""), 'A', MathML_ATTR_xref},
{TEXT("zzghost"), TEXT(""), 'A', MathML_ATTR_Ghost_restruct},
{TEXT(""), TEXT(""), EOS, 0} /* Last entry. Mandatory */
};
/* mapping table of attribute values */
static AttrValueMapping MathMLAttrValueMappingTable[] =
{
{MathML_ATTR_accent, "true", MathML_ATTR_accent_VAL_true},
{MathML_ATTR_accent, "false", MathML_ATTR_accent_VAL_false},
{MathML_ATTR_accentunder, "true", MathML_ATTR_accentunder_VAL_true},
{MathML_ATTR_accentunder, "false", MathML_ATTR_accentunder_VAL_false},
{MathML_ATTR_beveled, "true", MathML_ATTR_beveled_VAL_true},
{MathML_ATTR_beveled, "false", MathML_ATTR_beveled_VAL_false},
{MathML_ATTR_denomalign, "center", MathML_ATTR_denomalign_VAL_center_},
{MathML_ATTR_denomalign, "left", MathML_ATTR_denomalign_VAL_left_},
{MathML_ATTR_denomalign, "right", MathML_ATTR_denomalign_VAL_right_},
{MathML_ATTR_displaystyle, "true", MathML_ATTR_displaystyle_VAL_true},
{MathML_ATTR_displaystyle, "false", MathML_ATTR_displaystyle_VAL_false},
{MathML_ATTR_edge, "left", MathML_ATTR_edge_VAL_left_},
{MathML_ATTR_edge, "right", MathML_ATTR_edge_VAL_right_},
{MathML_ATTR_fence, "true", MathML_ATTR_fence_VAL_true},
{MathML_ATTR_fence, "false", MathML_ATTR_fence_VAL_false},
{MathML_ATTR_fontstyle, "italic", MathML_ATTR_fontstyle_VAL_italic},
{MathML_ATTR_fontstyle, "normal", MathML_ATTR_fontstyle_VAL_normal_},
{MathML_ATTR_fontweight, "normal", MathML_ATTR_fontweight_VAL_normal_},
{MathML_ATTR_fontweight, "bold", MathML_ATTR_fontweight_VAL_bold_},
{MathML_ATTR_form, "prefix", MathML_ATTR_form_VAL_prefix},
{MathML_ATTR_form, "infix", MathML_ATTR_form_VAL_infix},
{MathML_ATTR_form, "postfix", MathML_ATTR_form_VAL_postfix},
{MathML_ATTR_frame, "none", MathML_ATTR_frame_VAL_none_},
{MathML_ATTR_frame, "solid", MathML_ATTR_frame_VAL_solid_},
{MathML_ATTR_frame, "dashed", MathML_ATTR_frame_VAL_dashed_},
{MathML_ATTR_largeop, "true", MathML_ATTR_largeop_VAL_true},
{MathML_ATTR_largeop, "false", MathML_ATTR_largeop_VAL_false},
{MathML_ATTR_link, "document", MathML_ATTR_link_VAL_document},
{MathML_ATTR_link, "extended", MathML_ATTR_link_VAL_extended},
{MathML_ATTR_link, "group", MathML_ATTR_link_VAL_group},
{MathML_ATTR_link, "locator", MathML_ATTR_link_VAL_locator},
{MathML_ATTR_link, "simple", MathML_ATTR_link_VAL_simple},
{MathML_ATTR_movablelimits, "true", MathML_ATTR_movablelimits_VAL_true},
{MathML_ATTR_movablelimits, "false", MathML_ATTR_movablelimits_VAL_false},
{MathML_ATTR_notation, "longdiv", MathML_ATTR_notation_VAL_longdiv},
{MathML_ATTR_notation, "actuarial", MathML_ATTR_notation_VAL_actuarial},
{MathML_ATTR_notation, "radical", MathML_ATTR_notation_VAL_radical},
{MathML_ATTR_numalign, "center", MathML_ATTR_numalign_VAL_center_},
{MathML_ATTR_numalign, "left", MathML_ATTR_numalign_VAL_left_},
{MathML_ATTR_numalign, "right", MathML_ATTR_numalign_VAL_right_},
{MathML_ATTR_separator, "true", MathML_ATTR_separator_VAL_true},
{MathML_ATTR_separator, "false", MathML_ATTR_separator_VAL_false},
{MathML_ATTR_side, "left", MathML_ATTR_side_VAL_left_},
{MathML_ATTR_side, "leftoverlap", MathML_ATTR_side_VAL_leftoverlap},
{MathML_ATTR_side, "right", MathML_ATTR_side_VAL_right_},
{MathML_ATTR_side, "rightoverlap", MathML_ATTR_side_VAL_rightoverlap},
{MathML_ATTR_stretchy, "true", MathML_ATTR_stretchy_VAL_true},
{MathML_ATTR_stretchy, "false", MathML_ATTR_stretchy_VAL_false},
{MathML_ATTR_symmetric, "true", MathML_ATTR_symmetric_VAL_true},
{MathML_ATTR_symmetric, "false", MathML_ATTR_symmetric_VAL_false},
{0, "", 0} /* Last entry. Mandatory */
};
#define MaxMsgLength 200
#include "HTMLtable_f.h"
#include "Mathedit_f.h"
#include "XMLparser_f.h"
#include "styleparser_f.h"
#include "fetchXMLname_f.h"
/*----------------------------------------------------------------------
MapMathMLAttribute
Search in the Attribute Mapping Table the entry for the
attribute of name Attr and returns the corresponding Thot attribute type.
----------------------------------------------------------------------*/
#ifdef __STDC__
void MapMathMLAttribute (CHAR_T* Attr, AttributeType *attrType, STRING elementName, Document doc)
#else
void MapMathMLAttribute (Attr, attrType, elementName, doc)
STRING Attr;
AttributeType *attrType;
STRING elementName;
Document doc;
#endif
{
int i;
attrType->AttrTypeNum = 0;
attrType->AttrSSchema = NULL;
i = 0;
do
if (ustrcasecmp (MathMLAttributeMappingTable[i].XMLattribute, Attr))
i++;
else
if (MathMLAttributeMappingTable[i].XMLelement[0] == EOS)
{
attrType->AttrTypeNum = MathMLAttributeMappingTable[i].ThotAttribute;
attrType->AttrSSchema = GetMathMLSSchema (doc);
}
else if (!ustrcasecmp (MathMLAttributeMappingTable[i].XMLelement,
elementName))
{
attrType->AttrTypeNum = MathMLAttributeMappingTable[i].ThotAttribute;
attrType->AttrSSchema = GetMathMLSSchema (doc);
}
else
i++;
while (attrType->AttrTypeNum <= 0 && MathMLAttributeMappingTable[i].AttrOrContent != EOS);
}
/*----------------------------------------------------------------------
MapMathMLAttributeValue
Search in the Attribute Value Mapping Table the entry for the attribute
ThotAtt and its value AttrVal. Returns the corresponding Thot value.
----------------------------------------------------------------------*/
#ifdef __STDC__
void MapMathMLAttributeValue (STRING AttrVal, AttributeType attrType, int *value)
#else
void MapMathMLAttributeValue (AttrVal, attrType, value)
STRING AttrVal;
AttributeType attrType;
int *value;
#endif
{
int i;
*value = 0;
i = 0;
while (MathMLAttrValueMappingTable[i].ThotAttr != attrType.AttrTypeNum &&
MathMLAttrValueMappingTable[i].ThotAttr != 0)
i++;
if (MathMLAttrValueMappingTable[i].ThotAttr == attrType.AttrTypeNum)
do
if (!ustrcasecmp (MathMLAttrValueMappingTable[i].XMLattrValue, AttrVal))
*value = MathMLAttrValueMappingTable[i].ThotAttrValue;
else
i++;
while (*value <= 0 && MathMLAttrValueMappingTable[i].ThotAttr != 0);
}
/*----------------------------------------------------------------------
MapMathMLEntity
Search that entity in the entity table and return the corresponding value.
----------------------------------------------------------------------*/
#ifdef __STDC__
void MapMathMLEntity (STRING entityName, STRING entityValue, int valueLength, STRING alphabet)
#else
void MapMathMLEntity (entityName, entityValue, valueLength, alphabet)
STRING entityName;
STRING entityValue;
int valueLength;
STRING alphabet;
#endif
{
int i;
for (i = 0; MathEntityTable[i].charCode >= 0 &&
ustrcmp (MathEntityTable[i].MentityName, entityName);
i++);
if (!ustrcmp (MathEntityTable[i].MentityName, entityName))
/* entity found */
{
entityValue[0] = (UCHAR_T) MathEntityTable[i].charCode;
entityValue[1] = EOS;
*alphabet = MathEntityTable[i].alphabet;
}
else
{
entityValue[0] = EOS;
*alphabet = EOS;
}
}
/*----------------------------------------------------------------------
MathMLEntityCreated
A MathML entity has been created by the XML parser.
Create an attribute EntityName containing the entity name.
----------------------------------------------------------------------*/
#ifdef __STDC__
void MathMLEntityCreated (USTRING entityValue, Language lang, STRING entityName, Document doc)
#else
void MathMLEntityCreated (entityValue, lang, entityName, doc)
USTRING entityValue;
Language lang;
STRING entityName;
Document doc;
#endif
{
ElementType elType;
Element elText;
AttributeType attrType;
Attribute attr;
int len, code;
#define MAX_ENTITY_LENGTH 80
CHAR_T buffer[MAX_ENTITY_LENGTH];
if (lang < 0)
/* unknown entity */
{
/* by default display a question mark */
entityValue[0] = '?';
entityValue[1] = EOS;
lang = TtaGetLanguageIdFromAlphabet('L');
/* let's see if we can do more */
if (entityName[0] == '#')
/* it's a number */
{
if (entityName[1] == 'x')
/* it's a hexadecimal number */
usscanf (&entityName[2], TEXT("%x"), &code);
else
/* it's a decimal number */
usscanf (&entityName[1], TEXT("%d"), &code);
GetFallbackCharacter (code, entityValue, &lang);
}
}
XMLTextToDocument ();
elType.ElTypeNum = MathML_EL_TEXT_UNIT;
elType.ElSSchema = GetMathMLSSchema (doc);
elText = TtaNewElement (doc, elType);
SetElemLineNumber (elText);
XMLInsertElement (elText);
TtaSetTextContent (elText, entityValue, lang, doc);
TtaSetAccessRight (elText, ReadOnly, doc);
attrType.AttrSSchema = GetMathMLSSchema (doc);
attrType.AttrTypeNum = MathML_ATTR_EntityName;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (elText, attr, doc);
len = ustrlen (entityName);
if (len > MAX_ENTITY_LENGTH -3)
len = MAX_ENTITY_LENGTH -3;
buffer[0] = '&';
ustrncpy (&buffer[1], entityName, len);
buffer[len+1] = ';';
buffer[len+2] = EOS;
TtaSetAttributeText (attr, buffer, elText, doc);
}
/*----------------------------------------------------------------------
CheckTextElement Put the content of input buffer into the document.
----------------------------------------------------------------------*/
#ifdef __STDC__
static void CheckTextElement (Element *el, Document doc)
#else
static void CheckTextElement (el, doc)
Element *el;
Document doc;
#endif
{
ElementType parentType, elType;
Element parent, new;
int len;
Language lang;
CHAR_T alphabet;
char text[4];
len = TtaGetTextLength (*el);
if (len == 1)
{
len = 2;
TtaGiveTextContent (*el, text, &len, &lang);
alphabet = TtaGetAlphabet (lang);
parent = TtaGetParent (*el);
if (text[0] != EOS)
{
parentType = TtaGetElementType (parent);
elType = parentType;
if (parentType.ElTypeNum == MathML_EL_MF &&
(text[0] == '(' ||
text[0] == ')' ||
text[0] == '[' ||
text[0] == ']' ||
text[0] == '{' ||
text[0] == '}'))
/* Transform the text element into a Thot SYMBOL */
elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
else if (parentType.ElTypeNum == MathML_EL_MF &&
text[0] == '|')
/* Transform the text element into a Thot GRAPHIC */
{
elType.ElTypeNum = MathML_EL_GRAPHICS_UNIT;
text[0] = 'v';
}
else
/* a TEXT element is OK */
elType.ElTypeNum = MathML_EL_TEXT_UNIT;
if (elType.ElTypeNum != MathML_EL_TEXT_UNIT)
{
new = TtaNewElement (doc, elType);
TtaInsertSibling (new, *el, FALSE, doc);
TtaDeleteTree (*el, doc);
*el = new;
TtaSetGraphicsShape (new, text[0], doc);
}
}
}
}
/*----------------------------------------------------------------------
ElementNeedsPlaceholder
returns TRUE if element el needs a sibling placeholder.
----------------------------------------------------------------------*/
#ifdef __STDC__
ThotBool ElementNeedsPlaceholder (Element el)
#else
ThotBool ElementNeedsPlaceholder (el)
Element el;
#endif
{
ElementType elType;
Element child, parent;
ThotBool ret;
ret = FALSE;
elType = TtaGetElementType (el);
if (elType.ElTypeNum == MathML_EL_MS ||
elType.ElTypeNum == MathML_EL_MSPACE ||
elType.ElTypeNum == MathML_EL_MROW ||
elType.ElTypeNum == MathML_EL_MFRAC ||
elType.ElTypeNum == MathML_EL_MSQRT ||
elType.ElTypeNum == MathML_EL_MROOT ||
elType.ElTypeNum == MathML_EL_MSTYLE ||
elType.ElTypeNum == MathML_EL_MERROR ||
elType.ElTypeNum == MathML_EL_MPADDED ||
elType.ElTypeNum == MathML_EL_MPHANTOM ||
elType.ElTypeNum == MathML_EL_MFENCED ||
elType.ElTypeNum == MathML_EL_MF ||
elType.ElTypeNum == MathML_EL_MSUB ||
elType.ElTypeNum == MathML_EL_MSUP ||
elType.ElTypeNum == MathML_EL_MSUBSUP ||
elType.ElTypeNum == MathML_EL_MUNDER ||
elType.ElTypeNum == MathML_EL_MOVER ||
elType.ElTypeNum == MathML_EL_MUNDEROVER ||
elType.ElTypeNum == MathML_EL_MMULTISCRIPTS ||
elType.ElTypeNum == MathML_EL_MTABLE ||
elType.ElTypeNum == MathML_EL_MACTION)
ret = TRUE;
else
if (elType.ElTypeNum == MathML_EL_MO)
/* an operator that contains a single Symbol needs a placeholder,
except when it is in a Base or UnderOverBase */
{
child = TtaGetFirstChild (el);
if (child != NULL)
{
elType = TtaGetElementType (child);
if (elType.ElTypeNum == MathML_EL_SYMBOL_UNIT)
{
ret = TRUE;
parent = TtaGetParent (el);
if (parent != NULL)
{
elType = TtaGetElementType (parent);
if (elType.ElTypeNum == MathML_EL_Base ||
elType.ElTypeNum == MathML_EL_UnderOverBase)
ret = FALSE;
}
}
}
}
return ret;
}
/*----------------------------------------------------------------------
CreatePlaceholders
----------------------------------------------------------------------*/
#ifdef __STDC__
static void CreatePlaceholders (Element el, Document doc)
#else
static void CreatePlaceholders (el, doc)
Element el;
Document doc;
#endif
{
Element sibling, prev, constr, child;
Attribute attr;
ElementType elType;
AttributeType attrType;
ThotBool create;
elType.ElSSchema = GetMathMLSSchema (doc);
prev = NULL;
create = TRUE;
sibling = el;
while (sibling != NULL)
{
if (!ElementNeedsPlaceholder (sibling))
create = FALSE;
else
{
if (sibling == el)
/* first element */
{
elType = TtaGetElementType (sibling);
if (elType.ElTypeNum == MathML_EL_MF)
/* the first element is a MF. Don't create a placeholder
before */
create = FALSE;
else if (elType.ElTypeNum == MathML_EL_MROW)
/* the first element is a MROW */
{
child = TtaGetFirstChild (sibling);
if (child != NULL)
{
elType = TtaGetElementType (child);
if (elType.ElTypeNum != MathML_EL_MF)
/* the first child of the MROW element is not a MF */
/* Don't create a placeholder before */
create = FALSE;
}
}
}
if (create)
{
elType.ElTypeNum = MathML_EL_Construct;
constr = TtaNewElement (doc, elType);
TtaInsertSibling (constr, sibling, TRUE, doc);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (constr, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_, constr, doc);
}
create = TRUE;
}
prev = sibling;
TtaNextSibling (&sibling);
}
if (prev != NULL && create)
{
elType = TtaGetElementType (prev);
/* don't insert a placeholder after the last element if it's a MF
or a SEP */
if (elType.ElTypeNum == MathML_EL_MF ||
elType.ElTypeNum == MathML_EL_SEP)
create = FALSE;
else if (elType.ElTypeNum == MathML_EL_MROW)
/* the last element is a MROW */
{
child = TtaGetLastChild (prev);
if (child != NULL)
{
elType = TtaGetElementType (child);
if (elType.ElTypeNum != MathML_EL_MF)
/* the last child of the MROW element is not a MF */
/* Don't create a placeholder before */
create = FALSE;
}
}
if (create)
{
elType.ElTypeNum = MathML_EL_Construct;
constr = TtaNewElement (doc, elType);
TtaInsertSibling (constr, prev, FALSE, doc);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (constr, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_, constr, doc);
}
}
}
/*----------------------------------------------------------------------
NextNotSepOrComment
Return the next sibling of element el that is not a SEP element
nor an XMLcomment element.
Return el itself if it's not a SEP or a comment.
----------------------------------------------------------------------*/
#ifdef __STDC__
static void NextNotSepOrComment (Element* el, Element* prev)
#else
static void NextNotSepOrComment (el, prev)
Element *el;
#endif
{
ElementType elType;
if (*el == NULL)
return;
elType = TtaGetElementType (*el);
while (*el != NULL && (elType.ElTypeNum == MathML_EL_SEP ||
elType.ElTypeNum == MathML_EL_XMLcomment))
{
*prev = *el;
TtaNextSibling (el);
if (*el != NULL)
elType = TtaGetElementType (*el);
}
}
/*----------------------------------------------------------------------
CheckMathSubExpressions
Children of element el should be of type type1, type2, and type3.
Create an element of that type.
----------------------------------------------------------------------*/
#ifdef __STDC__
static void CheckMathSubExpressions (Element el, int type1, int type2, int type3, Document doc)
#else
static void CheckMathSubExpressions (el, type1, type2, type3, doc)
Element el;
int type1;
int type2;
int type3;
Document doc;
#endif
{
Element child, new, prev;
ElementType elType, childType;
elType.ElSSchema = GetMathMLSSchema (doc);
child = TtaGetFirstChild (el);
prev = NULL;
NextNotSepOrComment (&child, &prev);
if (child != NULL && type1 != 0)
{
elType.ElTypeNum = type1;
childType = TtaGetElementType (child);
if (TtaSameTypes (childType, elType) == 0)
{
TtaRemoveTree (child, doc);
new = TtaNewElement (doc, elType);
if (prev == NULL)
TtaInsertFirstChild (&new, el, doc);
else
TtaInsertSibling (new, prev, FALSE, doc);
TtaInsertFirstChild (&child, new, doc);
CreatePlaceholders (child, doc);
child = new;
}
if (type2 != 0)
{
prev = child;
TtaNextSibling (&child);
NextNotSepOrComment (&child, &prev);
if (child != NULL)
{
elType.ElTypeNum = type2;
childType = TtaGetElementType (child);
if (TtaSameTypes (childType, elType) == 0)
{
TtaRemoveTree (child, doc);
new = TtaNewElement (doc, elType);
TtaInsertSibling (new, prev, FALSE, doc);
TtaInsertFirstChild (&child, new, doc);
CreatePlaceholders (child, doc);
child = new;
}
if (type3 != 0)
{
prev = child;
TtaNextSibling (&child);
NextNotSepOrComment (&child, &prev);
if (child != NULL)
{
elType.ElTypeNum = type3;
childType = TtaGetElementType (child);
if (TtaSameTypes (childType, elType) == 0)
{
TtaRemoveTree (child, doc);
new = TtaNewElement (doc, elType);
TtaInsertSibling (new, prev, FALSE, doc);
TtaInsertFirstChild (&child, new, doc);
CreatePlaceholders (child, doc);
}
}
}
}
}
}
}
/*----------------------------------------------------------------------
SetSingleIntHorizStretchAttr
Put a IntHorizStretch attribute on element el if it contains only
a MO element that is a stretchable symbol.
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetSingleIntHorizStretchAttr (Element el, Document doc, Element* selEl)
#else /* __STDC__*/
void SetSingleIntHorizStretchAttr (el, doc, selEl)
Element el;
Document doc;
Element* selEl;
#endif /* __STDC__*/
{
Element child, sibling, textEl, symbolEl;
ElementType elType;
Attribute attr;
AttributeType attrType;
int len;
Language lang;
CHAR_T alphabet;
UCHAR_T text[2], c;
if (el == NULL)
return;
child = TtaGetFirstChild (el);
if (child != NULL)
{
elType = TtaGetElementType (child);
if (elType.ElTypeNum == MathML_EL_MO)
/* the first child is a MO */
{
sibling = child;
TtaNextSibling (&sibling);
if (sibling == NULL)
/* there is no other child */
{
textEl = TtaGetFirstChild (child);
elType = TtaGetElementType (textEl);
if (elType.ElTypeNum == MathML_EL_TEXT_UNIT)
{
len = TtaGetTextLength (textEl);
if (len == 1)
{
len = 2;
TtaGiveTextContent (textEl, text, &len, &lang);
alphabet = TtaGetAlphabet (lang);
if (len == 1)
if (alphabet == 'G')
/* a single Symbol character */
if ((int)text[0] == 172 || (int)text[0] == 174)
/* horizontal arrow */
{
c = EOS;
/* attach a IntHorizStretch attribute */
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntHorizStretch;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (el, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntHorizStretch_VAL_yes_, el, doc);
/* replace the TEXT element by a Thot SYMBOL element */
elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
symbolEl = TtaNewElement (doc, elType);
TtaInsertSibling (symbolEl, textEl, FALSE, doc);
if (selEl != NULL)
if (*selEl == textEl)
*selEl = symbolEl;
TtaDeleteTree (textEl, doc);
if ((int)text[0] == 172)
c = '<';
if ((int)text[0] == 174)
c = '>';
if (c != EOS)
TtaSetGraphicsShape (symbolEl, c, doc);
}
}
}
}
}
}
}
/*----------------------------------------------------------------------
SetIntHorizStretchAttr
Put a IntHorizStretch attribute on all children of element el which
contain only a MO element that is a stretchable symbol.
-----------------------------------------------------------------------*/
#ifdef __STDC__
static void SetIntHorizStretchAttr (Element el, Document doc)
#else /* __STDC__*/
static void SetIntHorizStretchAttr (el, doc)
Element el;
Document doc;
#endif /* __STDC__*/
{
Element child;
if (el == NULL)
return;
child = TtaGetFirstChild (el);
while (child != NULL)
{
SetSingleIntHorizStretchAttr (child, doc, NULL);
TtaNextSibling (&child);
}
}
/*----------------------------------------------------------------------
SetIntVertStretchAttr
Put a IntVertStretch attribute on element el if its base element
(Base for a MSUBSUP, MSUP or MSUB; UnderOverBase for a MUNDEROVER,
a MUNDER of a MOVER) contains only a MO element that is a vertically
stretchable symbol.
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetIntVertStretchAttr (Element el, Document doc, int base, Element* selEl)
#else /* __STDC__*/
void SetIntVertStretchAttr (el, doc, base, selEl)
Element el;
Document doc;
int base;
Element* selEl;
#endif /* __STDC__*/
{
Element child, sibling, textEl, symbolEl, parent, operator;
ElementType elType;
Attribute attr;
AttributeType attrType;
int len;
Language lang;
CHAR_T alphabet;
UCHAR_T text[2], c;
if (el == NULL)
return;
operator = NULL;
if (base == 0)
/* it's a MO */
{
parent = TtaGetParent (el);
if (parent != NULL)
{
elType = TtaGetElementType (parent);
if (elType.ElTypeNum != MathML_EL_Base &&
elType.ElTypeNum != MathML_EL_UnderOverBase &&
elType.ElTypeNum != MathML_EL_MSUBSUP &&
elType.ElTypeNum != MathML_EL_MSUB &&
elType.ElTypeNum != MathML_EL_MSUP &&
elType.ElTypeNum != MathML_EL_MUNDEROVER &&
elType.ElTypeNum != MathML_EL_MUNDER &&
elType.ElTypeNum != MathML_EL_MUNDEROVER)
operator = el;
}
}
else
/* it's not a MO */
{
/* search the Base or UnderOverBase child */
child = TtaGetFirstChild (el);
if (child != NULL)
{
elType = TtaGetElementType (child);
if (elType.ElTypeNum == base)
/* the first child is a Base or UnderOverBase */
{
child = TtaGetFirstChild (child);
if (child != NULL)
{
elType = TtaGetElementType (child);
if (elType.ElTypeNum == MathML_EL_MO)
/* its first child is a MO */
{
sibling = child;
TtaNextSibling (&sibling);
if (sibling == NULL)
/* there is no other child */
operator = child;
}
}
}
}
}
if (operator != NULL)
{
textEl = TtaGetFirstChild (operator);
if (textEl != NULL)
{
elType = TtaGetElementType (textEl);
if (elType.ElTypeNum == MathML_EL_TEXT_UNIT)
{
len = TtaGetTextLength (textEl);
if (len == 1)
{
len = 2;
TtaGiveTextContent (textEl, text, &len, &lang);
alphabet = TtaGetAlphabet (lang);
if (len == 1)
if (alphabet == 'G')
/* a single Symbol character */
if ((int)text[0] == 242)
/* Integral */
{
/* attach a IntVertStretch attribute */
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntVertStretch;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (el, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntVertStretch_VAL_yes_, el, doc);
/* replace the TEXT element by a Thot SYMBOL element*/
elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
symbolEl = TtaNewElement (doc, elType);
TtaInsertSibling (symbolEl, textEl, FALSE, doc);
if (selEl != NULL)
if (*selEl == textEl)
*selEl = symbolEl;
TtaDeleteTree (textEl, doc);
c = 'i';
TtaSetGraphicsShape (symbolEl, c, doc);
}
}
}
}
}
}
/*----------------------------------------------------------------------
SetIntPlaceholderAttr
Put a IntPlaceholder attribute on all Construct elements in the
subtree of root el.
-----------------------------------------------------------------------*/
#ifdef __STDC__
static void SetIntPlaceholderAttr (Element el, Document doc)
#else /* __STDC__*/
static void SetIntPlaceholderAttr (el, doc)
Element el;
Document doc;
#endif /* __STDC__*/
{
Element child;
ElementType elType;
Attribute attr;
AttributeType attrType;
if (el == NULL)
return;
elType = TtaGetElementType (el);
if (elType.ElTypeNum == MathML_EL_Construct &&
elType.ElSSchema == GetMathMLSSchema (doc))
{
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (el, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_, el, doc);
}
else
{
child = TtaGetFirstChild (el);
while (child != NULL)
{
SetIntPlaceholderAttr (child, doc);
TtaNextSibling (&child);
}
}
}
/*----------------------------------------------------------------------
BuildMultiscript
The content of a MMULTISCRIPT element has been created following
the original MathML structure. Create all Thot elements defined
in the MathML S schema.
-----------------------------------------------------------------------*/
#ifdef __STDC__
static void BuildMultiscript (Element elMMULTISCRIPT, Document doc)
#else /* __STDC__*/
static void BuildMultiscript (elMMULTISCRIPT, doc)
Element elMMULTISCRIPT;
Document doc;
#endif /* __STDC__*/
{
Element elem, base, next, group, pair, script, prevPair, prevScript;
ElementType elType, elTypeGroup, elTypePair, elTypeScript;
SSchema MathMLSSchema;
base = NULL;
group = NULL;
prevPair = NULL;
prevScript = NULL;
MathMLSSchema = GetMathMLSSchema (doc);
elTypeGroup.ElSSchema = MathMLSSchema;
elTypePair.ElSSchema = MathMLSSchema;
elTypeScript.ElSSchema = MathMLSSchema;
/* process all children of the MMULTISCRIPT element */
elem = TtaGetFirstChild (elMMULTISCRIPT);
while (elem != NULL)
{
/* remember the element to be processed after the current one */
next = elem;
TtaNextSibling (&next);
/* remove the current element from the tree */
TtaRemoveTree (elem, doc);
if (base == NULL)
/* the current element is the first child of the MMULTISCRIPT
element */
{
/* Create a MultiscriptBase element as the first child of
MMULTISCRIPT and move the current element as the first child
of the MultiscriptBase element */
elTypeGroup.ElTypeNum = MathML_EL_MultiscriptBase;
base = TtaNewElement (doc, elTypeGroup);
TtaInsertFirstChild (&base, elMMULTISCRIPT, doc);
TtaInsertFirstChild (&elem, base, doc);
}
else
/* the current element is a subscript or a superscript */
{
if (group == NULL)
/* there is no PostscriptPairs element. Create one */
{
elTypeGroup.ElTypeNum = MathML_EL_PostscriptPairs;
group = TtaNewElement (doc, elTypeGroup);
TtaInsertSibling (group, base, FALSE, doc);
elTypePair.ElTypeNum = MathML_EL_PostscriptPair;
/* create a first and a last PostscriptPair as placeholders */
pair = TtaNewTree (doc, elTypePair, _EMPTYSTR_);
TtaInsertFirstChild (&pair, group, doc);
SetIntPlaceholderAttr (pair, doc);
prevPair = pair;
pair = TtaNewTree (doc, elTypePair, _EMPTYSTR_);
TtaInsertSibling (pair, prevPair, FALSE, doc);
SetIntPlaceholderAttr (pair, doc);
prevScript = NULL;
}
if (prevScript == NULL)
/* the current element is the first subscript or superscript
in a pair */
{
/* create a PostscriptPair or PrescriptPair element */
pair = TtaNewElement (doc, elTypePair);
if (prevPair == NULL)
TtaInsertFirstChild (&pair, group, doc);
else
TtaInsertSibling (pair, prevPair, FALSE, doc);
prevPair = pair;
/* create a MSubscript element */
elTypeScript.ElTypeNum = MathML_EL_MSubscript;
script = TtaNewElement (doc, elTypeScript);
TtaInsertFirstChild (&script, pair, doc);
prevScript = script;
}
else
/* the current element is a superscript in a pair */
{
/* create a MSuperscript element */
elTypeScript.ElTypeNum = MathML_EL_MSuperscript;
script = TtaNewElement (doc, elTypeScript);
/* insert it as a sibling of the previous MSubscript element */
TtaInsertSibling (script, prevScript, FALSE, doc);
prevScript = NULL;
}
/* insert the current element as a child of the new MSuperscript or
MSubscript element */
TtaInsertFirstChild (&elem, script, doc);
SetIntPlaceholderAttr (elem, doc);
}
CreatePlaceholders (elem, doc);
/* get next child of the MMULTISCRIPT element */
elem = next;
if (elem != NULL)
{
elType = TtaGetElementType (elem);
if (elType.ElSSchema == MathMLSSchema &&
elType.ElTypeNum == MathML_EL_PrescriptPairs)
/* the next element is a PrescriptPairs */
{
/* if there there is no PostscriptPairs element, create one as a
placeholder */
if (elTypeGroup.ElTypeNum != MathML_EL_PostscriptPairs)
{
elTypeGroup.ElTypeNum = MathML_EL_PostscriptPairs;
group = TtaNewTree (doc, elTypeGroup, _EMPTYSTR_);
TtaInsertSibling (group, elem, TRUE, doc);
SetIntPlaceholderAttr (group, doc);
}
/* the following elements will be interpreted as sub- superscripts
in PrescriptPair elements, wich will be children of this
PrescriptPairs element */
elTypeGroup.ElTypeNum = MathML_EL_PrescriptPairs;
elTypePair.ElTypeNum = MathML_EL_PrescriptPair;
group = elem;
/* create a first and a last PostscriptPair as placeholders */
pair = TtaNewTree (doc, elTypePair, _EMPTYSTR_);
TtaInsertFirstChild (&pair, group, doc);
SetIntPlaceholderAttr (pair, doc);
prevPair = pair;
pair = TtaNewTree (doc, elTypePair, _EMPTYSTR_);
TtaInsertSibling (pair, prevPair, FALSE, doc);
SetIntPlaceholderAttr (pair, doc);
prevScript = NULL;
TtaNextSibling (&elem);
}
}
}
/* all children of element MMULTISCRIPTS have been processed */
/* if the last group processed is not a PrescriptPairs element,
create one as a placeholder */
if (elTypeGroup.ElTypeNum != MathML_EL_PrescriptPairs && base != NULL)
{
elTypeGroup.ElTypeNum = MathML_EL_PrescriptPairs;
elem = TtaNewTree (doc, elTypeGroup, _EMPTYSTR_);
if (group == NULL)
group = base;
TtaInsertSibling (elem, group, TRUE, doc);
SetIntPlaceholderAttr (elem, doc);
}
}
/*----------------------------------------------------------------------
CreateWrapper
Create an element of type wrapperType as a child of element el and
move all chidren of element el within the new element.
-----------------------------------------------------------------------*/
#ifdef __STDC__
static void CreateWrapper (Element el, int wrapperType, Document doc)
#else /* __STDC__*/
static void CreateWrapper (el, wrapperType, doc)
Element el;
int wrapperType;
Document doc;
#endif /* __STDC__*/
{
Element wrapper, child, prevChild, nextChild;
ElementType elType;
child = TtaGetFirstChild (el);
elType.ElSSchema = GetMathMLSSchema (doc);
elType.ElTypeNum = wrapperType;
wrapper = TtaNewElement (doc, elType);
TtaInsertFirstChild (&wrapper, el, doc);
prevChild = NULL;
while (child)
{
nextChild = child;
TtaNextSibling (&nextChild);
TtaRemoveTree (child, doc);
if (prevChild == NULL)
TtaInsertFirstChild (&child, wrapper, doc);
else
TtaInsertSibling (child, prevChild, FALSE, doc);
prevChild = child;
child = nextChild;
}
}
/*----------------------------------------------------------------------
CheckMTable
The content of a MTABLE element has been created following
the original MathML structure. Create all Thot elements defined
in the MathML S schema.
-----------------------------------------------------------------------*/
#ifdef __STDC__
void CheckMTable (Element elMTABLE, Document doc)
#else /* __STDC__*/
void CheckMTable (elMTABLE, doc)
Element elMTABLE;
Document doc;
#endif /* __STDC__*/
{
ElementType elType;
Element MTableHead, MTableBody, row, nextRow, el, prevRow, cell,
nextCell, newMTD, firstColHead;
SSchema MathMLSSchema;
MathMLSSchema = GetMathMLSSchema (doc);
row = TtaGetFirstChild (elMTABLE);
/* create a MTable_head as the first child of element MTABLE */
elType.ElSSchema = MathMLSSchema;
elType.ElTypeNum = MathML_EL_MTable_head;
MTableHead = TtaNewElement (doc, elType);
TtaInsertFirstChild (&MTableHead, elMTABLE, doc);
elType.ElTypeNum = MathML_EL_MColumn_head;
firstColHead = TtaNewTree (doc, elType, _EMPTYSTR_);
TtaInsertFirstChild (&firstColHead, MTableHead, doc);
/* create a MTable_body */
elType.ElSSchema = MathMLSSchema;
elType.ElTypeNum = MathML_EL_MTable_body;
MTableBody = TtaNewElement (doc, elType);
TtaInsertSibling (MTableBody, MTableHead, FALSE, doc);
/* move all children of element MTABLE into the new MTable_body element
and wrap each non-MTR element with a MTR */
prevRow = NULL;
while (row)
{
nextRow = row;
TtaNextSibling (&nextRow);
elType = TtaGetElementType (row);
TtaRemoveTree (row, doc);
if (TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) &&
(elType.ElTypeNum == MathML_EL_XMLcomment ||
elType.ElTypeNum == MathML_EL_MTR))
{
if (prevRow == NULL)
TtaInsertFirstChild (&row, MTableBody, doc);
else
TtaInsertSibling (row, prevRow, FALSE, doc);
prevRow = row;
if (elType.ElTypeNum == MathML_EL_MTR)
cell = TtaGetFirstChild (row);
else
cell = NULL;
}
else
/* this child is not a MTR nor a comment, create a MTR element */
{
elType.ElSSchema = MathMLSSchema;
elType.ElTypeNum = MathML_EL_MTR;
el = TtaNewElement (doc, elType);
if (prevRow == NULL)
TtaInsertFirstChild (&el, MTableBody, doc);
else
TtaInsertSibling (el, prevRow, FALSE, doc);
TtaInsertFirstChild (&row, el, doc);
cell = row;
prevRow = el;
}
while (cell)
/* check all children of the current MTR element */
{
nextCell = cell;
TtaNextSibling (&nextCell);
elType = TtaGetElementType (cell);
if (!TtaSameSSchemas (elType.ElSSchema, MathMLSSchema) ||
(elType.ElTypeNum != MathML_EL_XMLcomment &&
elType.ElTypeNum != MathML_EL_MTD))
/* this is not a MTD nor a comment, create a wrapping MTD */
{
elType.ElSSchema = MathMLSSchema;
elType.ElTypeNum = MathML_EL_MTD;
newMTD = TtaNewElement (doc, elType);
TtaInsertSibling (newMTD, cell, TRUE, doc);
TtaRemoveTree (cell, doc);
TtaInsertFirstChild (&cell, newMTD, doc);
cell = newMTD;
}
if (elType.ElTypeNum == MathML_EL_MTD)
/* This is a MTD element. Wrap its contents with a CellWrapper */
CreateWrapper (cell, MathML_EL_CellWrapper, doc);
cell = nextCell;
}
row = nextRow;
}
CheckAllRows (elMTABLE, doc);
}
/*----------------------------------------------------------------------
SetMcharContent
Set the content of the mchar element according to the value of
its name attribute
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetMcharContent (Element el, Document doc)
#else /* __STDC__*/
void SetMcharContent (el, doc)
Element el;
Document doc;
#endif /* __STDC__*/
{
ElementType elType;
AttributeType attrType;
Attribute attr;
Element leaf;
int length;
CHAR_T name[MAX_ENTITY_LENGTH];
UCHAR_T value[MAX_ENTITY_LENGTH];
CHAR_T alphabet;
Language lang;
if (el)
{
/* get the name attribute */
elType = TtaGetElementType (el);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_name;
attr = TtaGetAttribute (el, attrType);
if (attr)
{
leaf = TtaGetFirstChild (el);
if (!leaf)
/* there is no text leaf. Create one */
{
elType.ElTypeNum = MathML_EL_TEXT_UNIT;
leaf = TtaNewElement (doc, elType);
TtaInsertFirstChild (&leaf, el, doc);
}
length = MAX_ENTITY_LENGTH - 1;
TtaGiveTextAttributeValue (attr, name, &length);
MapMathMLEntity (name, value, MAX_ENTITY_LENGTH - 1, &alphabet);
if (alphabet == EOS)
/* unknown name */
{
/* by default display a question mark */
value[0] = '?';
value[1] = EOS;
lang = TtaGetLanguageIdFromAlphabet('L');
}
else
{
lang = TtaGetLanguageIdFromAlphabet(alphabet);
}
SetElemLineNumber (leaf);
TtaSetTextContent (leaf, value, lang, doc);
TtaSetAccessRight (leaf, ReadOnly, doc);
}
}
}
/*----------------------------------------------------------------------
SetFontstyleAttr
The content of a MI element has been created or modified.
Create or change attribute IntFontstyle for that element accordingly.
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetFontstyleAttr (Element el, Document doc)
#else /* __STDC__*/
void SetFontstyleAttr (el, doc)
Element el;
Document doc;
#endif /* __STDC__*/
{
ElementType elType;
AttributeType attrType;
Attribute attr, IntAttr;
int len;
if (el != NULL)
{
/* search the fontstyle attribute */
elType = TtaGetElementType (el);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_fontstyle;
attr = TtaGetAttribute (el, attrType);
attrType.AttrTypeNum = MathML_ATTR_IntFontstyle;
IntAttr = TtaGetAttribute (el, attrType);
if (attr != NULL)
/* there is a fontstyle attribute. Remove the corresponding
internal attribute that is not needed */
{
if (IntAttr != NULL)
TtaRemoveAttribute (el, IntAttr, doc);
}
else
/* there is no fontstyle attribute. Create an internal attribute
IntFontstyle with a value that depends on the content of the MI */
{
/* get content length */
len = TtaGetElementVolume (el);
if (len > 1)
/* put an attribute IntFontstyle = IntNormal */
{
if (IntAttr == NULL)
{
IntAttr = TtaNewAttribute (attrType);
TtaAttachAttribute (el, IntAttr, doc);
}
TtaSetAttributeValue (IntAttr, MathML_ATTR_IntFontstyle_VAL_IntNormal,
el, doc);
}
else
/* MI contains a single character. Remove attribute IntFontstyle
if it exists */
{
if (IntAttr != NULL)
TtaRemoveAttribute (el, IntAttr, doc);
}
}
}
}
/*----------------------------------------------------------------------
SetIntAddSpaceAttr
The content of a MO element has been created or modified.
Create or change attribute IntAddSpace for that element accordingly.
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetIntAddSpaceAttr (Element el, Document doc)
#else /* __STDC__*/
void SetIntAddSpaceAttr (el, doc)
Element el;
Document doc;
#endif /* __STDC__*/
{
Element textEl, previous;
ElementType elType;
AttributeType attrType;
Attribute attr;
int len, val;
#define BUFLEN 10
UCHAR_T text[BUFLEN];
Language lang;
CHAR_T alphabet;
textEl = TtaGetFirstChild (el);
if (textEl != NULL)
{
/* search the IntAddSpace attribute */
elType = TtaGetElementType (el);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntAddSpace;
attr = TtaGetAttribute (el, attrType);
if (attr == NULL)
{
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (el, attr, doc);
}
val = MathML_ATTR_IntAddSpace_VAL_nospace;
len = TtaGetTextLength (textEl);
if (len > 0 && len < BUFLEN)
{
len = BUFLEN;
TtaGiveTextContent (textEl, text, &len, &lang);
alphabet = TtaGetAlphabet (lang);
if (len == 1)
if (alphabet == 'L')
/* ISO-Latin 1 character */
{
if (text[0] == '-')
/* unary or binary operator? */
{
previous = el;
TtaPreviousSibling (&previous);
if (previous == NULL)
/* no previous sibling => unary operator */
val = MathML_ATTR_IntAddSpace_VAL_nospace;
else
{
elType = TtaGetElementType (previous);
if (elType.ElTypeNum == MathML_EL_MO)
/* after an operator => unary operator */
val = MathML_ATTR_IntAddSpace_VAL_nospace;
else
/* binary operator */
val = MathML_ATTR_IntAddSpace_VAL_both;
}
}
else if (text[0] == '+' ||
text[0] == '&' ||
text[0] == '*' ||
text[0] == '<' ||
text[0] == '=' ||
text[0] == '>' ||
text[0] == '^')
/* binary operator */
val = MathML_ATTR_IntAddSpace_VAL_both;
else if (text[0] == ',' ||
text[0] == ';')
val = MathML_ATTR_IntAddSpace_VAL_spaceafter;
}
else if (alphabet == 'G')
/* Symbol character set */
if ((int)text[0] == 163 || /* less or equal */
(int)text[0] == 177 || /* plus or minus */
(int)text[0] == 179 || /* greater or equal */
(int)text[0] == 180 || /* times */
(int)text[0] == 184 || /* divide */
(int)text[0] == 185 || /* not equal */
(int)text[0] == 186 || /* identical */
(int)text[0] == 187 || /* equivalent */
(int)text[0] == 196 || /* circle times */
(int)text[0] == 197 || /* circle plus */
((int)text[0] >= 199 && (int)text[0] <= 209) || /* */
(int)text[0] == 217 || /* and */
(int)text[0] == 218 ) /* or */
val = MathML_ATTR_IntAddSpace_VAL_both;
}
TtaSetAttributeValue (attr, val, el, doc);
}
}
/*----------------------------------------------------------------------
ChangeTypeOfElement
Change the type of element elem into newTypeNum
-----------------------------------------------------------------------*/
#ifdef __STDC__
void ChangeTypeOfElement (Element elem, Document doc, int newTypeNum)
#else /* __STDC__*/
void ChangeTypeOfElement (elem, doc, newTypeNum)
Element elem;
Document doc;
int newTypeNum;
#endif /* __STDC__*/
{
Element prev, next, parent;
parent = NULL;
prev = elem;
TtaPreviousSibling (&prev);
if (prev == NULL)
{
next = elem;
TtaNextSibling (&next);
if (next == NULL)
parent = TtaGetParent (elem);
}
TtaRemoveTree (elem, doc);
ChangeElementType (elem, newTypeNum);
if (prev != NULL)
TtaInsertSibling (elem, prev, FALSE, doc);
else if (next != NULL)
TtaInsertSibling (elem, next, TRUE, doc);
else
TtaInsertFirstChild (&elem, parent, doc);
}
/*----------------------------------------------------------------------
CheckFence
If el is a MO element that contains a single fence character,
transform the MO into a MF and the character into a Thot symbol.
----------------------------------------------------------------------*/
#ifdef __STDC__
void CheckFence (Element el, Document doc)
#else
void CheckFence (el, doc)
Element el;
Document doc;
#endif
{
ElementType elType;
Element content;
AttributeType attrType;
Attribute attr, attrStretchy;
int len, val;
Language lang;
CHAR_T alphabet;
UCHAR_T text[2], c;
elType = TtaGetElementType (el);
if (elType.ElTypeNum == MathML_EL_MO)
{
content = TtaGetFirstChild (el);
if (content != NULL)
{
elType = TtaGetElementType (content);
if (elType.ElTypeNum == MathML_EL_TEXT_UNIT)
{
len = TtaGetTextLength (content);
if (len == 1)
{
len = 2;
TtaGiveTextContent (content, text, &len, &lang);
alphabet = TtaGetAlphabet (lang);
if (len == 1)
if (alphabet == 'L')
/* a single character */
if (text[0] == '(' || text[0] == ')' ||
text[0] == '[' || text[0] == ']' ||
text[0] == '{' || text[0] == '}' ||
text[0] == '|' )
{
/* remove the content of the MO element */
TtaDeleteTree (content, doc);
/* change the MO element into a MF element */
ChangeTypeOfElement (el, doc, MathML_EL_MF);
/* is there an attribute stretchy on this mo element? */
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_stretchy;
attrStretchy = TtaGetAttribute (el, attrType);
if (attrStretchy)
val = TtaGetAttributeValue (attrStretchy);
else
val = MathML_ATTR_stretchy_VAL_true;
if (val == MathML_ATTR_stretchy_VAL_true)
{
/* attach a IntVertStretch attribute to the MF element */
attrType.AttrTypeNum = MathML_ATTR_IntVertStretch;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (el, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntVertStretch_VAL_yes_, el, doc);
}
/* create a new content for the MF element */
if (text[0] == '|')
{
elType.ElTypeNum = MathML_EL_GRAPHICS_UNIT;
c = 'v';
}
else
{
elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
c = text[0];
}
content = TtaNewElement (doc, elType);
TtaInsertFirstChild (&content, el, doc);
TtaSetGraphicsShape (content, c, doc);
}
}
}
}
}
}
/*----------------------------------------------------------------------
CreateFencedSeparators
Create FencedSeparator elements within the fencedExpression
according to attribute separators of the MFENCED element.
----------------------------------------------------------------------*/
#ifdef __STDC__
void CreateFencedSeparators (Element fencedExpression, Document doc, ThotBool record)
#else
void CreateFencedSeparators (fencedExpression, doc, record)
Element fencedExpression;
Document doc;
ThotBool record;
#endif
{
ElementType elType;
Element child, separator, leaf, next, prev, mfenced;
AttributeType attrType;
Attribute attr;
int length, sep, i;
Language lang;
CHAR_T text[32], sepValue[4];
/* get the separators attribute */
mfenced = TtaGetParent (fencedExpression);
elType = TtaGetElementType (fencedExpression);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_separators;
text[0] = ','; /* default value is sparators="," */
text[1] = EOS;
length = 1;
attr = TtaGetAttribute (mfenced, attrType);
if (attr != NULL)
{
length = 31;
TtaGiveTextAttributeValue (attr, text, &length);
}
/* create FencedSeparator elements in the FencedExpression */
prev = NULL;
sep = 0;
/* skip leading spaces in attribute separators */
while (text[sep] <= SPACE && text[sep] != EOS)
sep++;
/* if attribute separators is empty or contains only spaces, do not
insert any separator element */
if (text[sep] != EOS)
{
child = TtaGetFirstChild (fencedExpression);
while (child != NULL)
{
next = child;
TtaNextSibling (&next);
elType = TtaGetElementType (child);
if (elType.ElTypeNum != MathML_EL_Construct)
{
if (prev != NULL)
{
elType.ElTypeNum = MathML_EL_FencedSeparator;
separator = TtaNewElement (doc, elType);
TtaInsertSibling (separator, prev, FALSE, doc);
elType.ElTypeNum = MathML_EL_TEXT_UNIT;
leaf = TtaNewElement (doc, elType);
TtaInsertFirstChild (&leaf, separator, doc);
sepValue[0] = text[sep];
sepValue[1] = SPACE;
sepValue[2] = EOS;
lang = TtaGetLanguageIdFromAlphabet('L');
TtaSetTextContent (leaf, sepValue, lang, doc);
/* is there a following non-space character in separators? */
i = sep + 1;
while (text[i] <= SPACE && text[i] != EOS)
i++;
if (text[i] > SPACE && text[i] != EOS)
sep = i;
if (record)
TtaRegisterElementCreate (separator, doc);
}
prev = child;
}
child = next;
}
}
}
/*----------------------------------------------------------------------
TransformMFENCED
Transform the content of a MFENCED element: create elements
OpeningFence, FencedExpression, ClosingFence and FencedSeparator.
----------------------------------------------------------------------*/
#ifdef __STDC__
static void TransformMFENCED (Element el, Document doc)
#else
static void TransformMFENCED (el, doc)
Element el;
Document doc;
#endif
{
ElementType elType;
Element child, fencedExpression, leaf, fence, next, prev,
firstChild;
AttributeType attrType;
Attribute attr;
int length;
CHAR_T text[32], c;
child = TtaGetFirstChild (el);
if (child != NULL)
elType = TtaGetElementType (child);
if (child != NULL && elType.ElTypeNum == MathML_EL_OpeningFence)
/* The first child of this MFENCED element is an OpeningFence.
This MFENCED expression has already been transformed, possibly
by the Transform command */
{
TtaNextSibling (&child);
fencedExpression = child;
if (fencedExpression != NULL)
elType = TtaGetElementType (fencedExpression);
if (elType.ElTypeNum == MathML_EL_FencedExpression)
/* the second child is a FencedExpression. OK.
Remove all existing FencedSeparator elements */
{
child = TtaGetFirstChild (fencedExpression);
prev = NULL;
while (child != NULL)
{
elType = TtaGetElementType (child);
next = child;
TtaNextSibling (&next);
if (elType.ElTypeNum == MathML_EL_FencedSeparator)
/* Remove this separator */
TtaDeleteTree (child, doc);
child = next;
}
/* create FencedSeparator elements in the FencedExpression */
CreateFencedSeparators (fencedExpression, doc, FALSE);
}
}
else
/* this MFENCED element must be transformed */
{
/* create a FencedExpression element as a child of the MFENCED elem. */
elType = TtaGetElementType (el);
elType.ElTypeNum = MathML_EL_FencedExpression;
fencedExpression = TtaNewElement (doc, elType);
TtaInsertFirstChild (&fencedExpression, el, doc);
if (child == NULL)
/* empty MFENCED element */
{
elType.ElTypeNum = MathML_EL_Construct;
child = TtaNewElement (doc, elType);
TtaInsertFirstChild (&child, fencedExpression, doc);
SetIntPlaceholderAttr (child, doc);
}
else
{
/* move the content of the MFENCED element within the new
FencedExpression element */
prev = NULL;
firstChild = NULL;
while (child != NULL)
{
next = child;
TtaNextSibling (&next);
TtaRemoveTree (child, doc);
if (prev == NULL)
{
TtaInsertFirstChild (&child, fencedExpression, doc);
firstChild = child;
}
else
TtaInsertSibling (child, prev, FALSE, doc);
prev = child;
child = next;
}
/* create FencedSeparator elements in the FencedExpression */
CreateFencedSeparators (fencedExpression, doc, FALSE);
/* Create placeholders within the FencedExpression element */
CreatePlaceholders (firstChild, doc);
}
/* create the OpeningFence element according to the open attribute */
c = '(';
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_open;
attr = TtaGetAttribute (el, attrType);
if (attr != NULL)
{
length = 7;
TtaGiveTextAttributeValue (attr, text, &length);
c = text[0];
}
elType.ElTypeNum = MathML_EL_OpeningFence;
fence = TtaNewElement (doc, elType);
TtaInsertSibling (fence, fencedExpression, TRUE, doc);
elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
leaf = TtaNewElement (doc, elType);
TtaInsertFirstChild (&leaf, fence, doc);
TtaSetGraphicsShape (leaf, c, doc);
/* create the ClosingFence element according to close attribute */
c = ')';
attrType.AttrTypeNum = MathML_ATTR_close;
attr = TtaGetAttribute (el, attrType);
if (attr != NULL)
{
length = 7;
TtaGiveTextAttributeValue (attr, text, &length);
c = text[0];
}
elType.ElTypeNum = MathML_EL_ClosingFence;
fence = TtaNewElement (doc, elType);
TtaInsertSibling (fence, fencedExpression, FALSE, doc);
elType.ElTypeNum = MathML_EL_SYMBOL_UNIT;
leaf = TtaNewElement (doc, elType);
TtaInsertFirstChild (&leaf, fence, doc);
TtaSetGraphicsShape (leaf, c, doc);
}
}
/*----------------------------------------------------------------------
MathMLElementComplete
Check the Thot structure of the MathML element el.
----------------------------------------------------------------------*/
#ifdef __STDC__
void MathMLElementComplete (Element el, Document doc)
#else
void MathMLElementComplete (el, doc)
Element el;
Document doc;
#endif
{
ElementType elType, parentType;
Element child, parent, new, prev, next;
AttributeType attrType;
Attribute attr;
SSchema MathMLSSchema;
elType = TtaGetElementType (el);
MathMLSSchema = GetMathMLSSchema (doc);
if (elType.ElSSchema != MathMLSSchema)
/* this is not a MathML element. It's the HTML element <math>, or
any other element containing a MathML expression */
{
if (TtaGetFirstChild (el) == NULL && !TtaIsLeaf (elType))
/* this element is empty. Create a MathML element as it's child */
{
elType.ElSSchema = MathMLSSchema;
elType.ElTypeNum = MathML_EL_MathML;
new = TtaNewElement (doc, elType);
TtaInsertFirstChild (&new, el, doc);
/* Create a placeholder within the MathML element */
elType.ElTypeNum = MathML_EL_Construct;
child = TtaNewElement (doc, elType);
TtaInsertFirstChild (&child, new, doc);
attrType.AttrSSchema = elType.ElSSchema;
attrType.AttrTypeNum = MathML_ATTR_IntPlaceholder;
attr = TtaNewAttribute (attrType);
TtaAttachAttribute (child, attr, doc);
TtaSetAttributeValue (attr, MathML_ATTR_IntPlaceholder_VAL_yes_,
child, doc);
}
}
else
{
switch (elType.ElTypeNum)
{
case MathML_EL_TEXT_UNIT:
CheckTextElement (&el, doc);
break;
case MathML_EL_MI:
SetFontstyleAttr (el, doc);
break;
case MathML_EL_MO:
SetIntAddSpaceAttr (el, doc);
SetIntVertStretchAttr (el, doc, 0, NULL);
break;
case MathML_EL_MROW:
/* end of MROW */
/*if the first and the last child are MO containing a fence character
transform the MO into a MF and the character into a Thot SYMBOL */
child = TtaGetFirstChild (el);
if (child != NULL)
{
CheckFence (child, doc);
child = TtaGetLastChild (el);
if (child != NULL)
CheckFence (child, doc);
/* Create placeholders within the MROW */
CreatePlaceholders (TtaGetFirstChild (el), doc);
}
break;
case MathML_EL_MFRAC:
/* end of a fraction. Create a Numerator and a Denominator */
CheckMathSubExpressions (el, MathML_EL_Numerator,
MathML_EL_Denominator, 0, doc);
break;
case MathML_EL_MSQRT:
/* end od a Square Root. Create a SqrtBase that contains all
children of the MSQRT element */
CreateWrapper (el, MathML_EL_SqrtBase, doc);
break;
case MathML_EL_MROOT:
/* end of a Root. Create a RootBase and an Index */
CheckMathSubExpressions (el, MathML_EL_RootBase, MathML_EL_Index,
0, doc);
break;
case MathML_EL_MSTYLE:
case MathML_EL_MERROR:
case MathML_EL_MPADDED:
case MathML_EL_MPHANTOM:
/* Create placeholders within the element */
CreatePlaceholders (TtaGetFirstChild (el), doc);
break;
case MathML_EL_MFENCED:
TransformMFENCED (el, doc);
break;
case MathML_EL_MSUB:
/* end of a MSUB. Create Base and Subscript */
CheckMathSubExpressions (el, MathML_EL_Base, MathML_EL_Subscript,
0, doc);
SetIntVertStretchAttr (el, doc, MathML_EL_Base, NULL);
break;
case MathML_EL_MSUP:
/* end of a MSUP. Create Base and Superscript */
CheckMathSubExpressions (el, MathML_EL_Base, MathML_EL_Superscript,
0, doc);
SetIntVertStretchAttr (el, doc, MathML_EL_Base, NULL);
break;
case MathML_EL_MSUBSUP:
/* end of a MSUBSUP. Create Base, Subscript, and Superscript */
CheckMathSubExpressions (el, MathML_EL_Base, MathML_EL_Subscript,
MathML_EL_Superscript, doc);
SetIntVertStretchAttr (el, doc, MathML_EL_Base, NULL);
break;
case MathML_EL_MUNDER:
/* end of a MUNDER. Create UnderOverBase, and Underscript */
CheckMathSubExpressions (el, MathML_EL_UnderOverBase,
MathML_EL_Underscript, 0, doc);
SetIntHorizStretchAttr (el, doc);
SetIntVertStretchAttr (el, doc, MathML_EL_UnderOverBase, NULL);
break;
case MathML_EL_MOVER:
/* end of a MOVER. Create UnderOverBase, and Overscript */
CheckMathSubExpressions (el, MathML_EL_UnderOverBase,
MathML_EL_Overscript, 0, doc);
SetIntHorizStretchAttr (el, doc);
SetIntVertStretchAttr (el, doc, MathML_EL_UnderOverBase, NULL);
break;
case MathML_EL_MUNDEROVER:
/* end of a MUNDEROVER. Create UnderOverBase, Underscript, and
Overscript */
CheckMathSubExpressions (el, MathML_EL_UnderOverBase,
MathML_EL_Underscript, MathML_EL_Overscript, doc);
SetIntHorizStretchAttr (el, doc);
SetIntVertStretchAttr (el, doc, MathML_EL_UnderOverBase, NULL);
break;
case MathML_EL_MMULTISCRIPTS:
/* end of a MMULTISCRIPTS. Create all elements defined in the
MathML S schema */
BuildMultiscript (el, doc);
break;
case MathML_EL_MTABLE:
/* end of a MTABLE. Create all elements defined in the MathML S
schema */
CheckMTable (el, doc);
break;
case MathML_EL_MTD:
/* Create placeholders within the table cell */
CreatePlaceholders (TtaGetFirstChild (el), doc);
break;
case MathML_EL_MCHAR:
/* set the content of the mchar element according to the value of
its name attribute */
SetMcharContent (el, doc);
break;
case MathML_EL_MACTION:
/* Create placeholders within the MACTION element */
CreatePlaceholders (TtaGetFirstChild (el), doc);
break;
default:
break;
}
parent = TtaGetParent (el);
parentType = TtaGetElementType (parent);
if (parentType.ElSSchema != elType.ElSSchema)
/* root of a MathML tree, Create a MathML element if there is no */
if (elType.ElTypeNum != MathML_EL_MathML)
{
elType.ElSSchema = MathMLSSchema;
elType.ElTypeNum = MathML_EL_MathML;
new = TtaNewElement (doc, elType);
TtaInsertSibling (new, el, TRUE, doc);
next = el;
TtaNextSibling (&next);
TtaRemoveTree (el, doc);
TtaInsertFirstChild (&el, new, doc);
prev = el;
while (next != NULL)
{
child = next;
TtaNextSibling (&next);
TtaRemoveTree (child, doc);
TtaInsertSibling (child, prev, FALSE, doc);
prev = child;
}
/* Create placeholders within the MathML element */
CreatePlaceholders (el, doc);
}
}
}
/*----------------------------------------------------------------------
SetFontfamily
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetFontfamily (Document doc, Element el, STRING value)
#else /* __STDC__*/
void SetFontfamily (doc, el, value)
Document doc;
Element el;
STRING value;
#endif /* __STDC__*/
{
#define buflen 50
CHAR_T css_command[buflen+20];
usprintf (css_command, TEXT("font-family: %s"), value);
ParseHTMLSpecificStyle (el, css_command, doc, FALSE);
}
/*----------------------------------------------------------------------
SetFontsize
-----------------------------------------------------------------------*/
#ifdef __STDC__
void SetFontsize (Document doc, Element el, STRING value)
#else /* __STDC__*/
void SetFontsize (doc, el, value)
Document doc;
Element el;
STRING value;
#endif /* __STDC__*/
{
#define buflen 50
CHAR_T css_command[buflen+20];
usprintf (css_command, TEXT("font-size: %s"), value);
ParseHTMLSpecificStyle (el, css_command, doc, FALSE);
}
/*----------------------------------------------------------------------
MathMLAttributeComplete
----------------------------------------------------------------------*/
#ifdef __STDC__
void MathMLAttributeComplete (Attribute attr, Element el, Document doc)
#else
void MathMLAttributeComplete (attr, el, doc)
Attribute attr;
Element el;
Document doc;
#endif
{
AttributeType attrType;
int attrKind;
#define buflen 50
STRING value;
int length;
TtaGiveAttributeType (attr, &attrType, &attrKind);
if (attrType.AttrTypeNum == MathML_ATTR_color ||
attrType.AttrTypeNum == MathML_ATTR_background_ ||
attrType.AttrTypeNum == MathML_ATTR_fontsize ||
attrType.AttrTypeNum == MathML_ATTR_fontfamily)
{
length = TtaGetTextAttributeLength (attr);
if (length >= buflen)
length = buflen - 1;
if (length > 0)
{
value = TtaAllocString (buflen);
value[0] = EOS;
TtaGiveTextAttributeValue (attr, value, &length);
switch (attrType.AttrTypeNum)
{
case MathML_ATTR_color:
HTMLSetForegroundColor (doc, el, value);
break;
case MathML_ATTR_background_:
HTMLSetBackgroundColor (doc, el, value);
break;
case MathML_ATTR_fontsize:
SetFontsize (doc, el, value);
break;
case MathML_ATTR_fontfamily:
SetFontfamily (doc, el, value);
break;
}
TtaFreeMemory (value);
}
}
}
/*----------------------------------------------------------------------
MathMLGetDTDName
----------------------------------------------------------------------*/
#ifdef __STDC__
void MathMLGetDTDName (STRING DTDname, STRING elementName)
#else
void MathMLGetDTDName (DTDname, elementName)
STRING DTDname;
STRING elementName;
#endif
{
/* no other DTD allowed within MathML elements */
ustrcpy (DTDname, _EMPTYSTR_);
}
/* end of module */
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