Delete the legacy SVG parser

src/svg/parser/SkSVGParser.cpp

Index: src/svg/parser/SkSVGParser.cpp
diff --git a/src/svg/parser/SkSVGParser.cpp b/src/svg/parser/SkSVGParser.cpp
deleted file mode 100644
index 6243e37e94cdfa2f7296bc6f4b5ba7e950444e01..0000000000000000000000000000000000000000
--- a/src/svg/parser/SkSVGParser.cpp
+++ /dev/null
@@ -1,440 +0,0 @@
-/*
- * Copyright 2006 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "SkSVGParser.h"
-#include "SkSVGCircle.h"
-#include "SkSVGClipPath.h"
-#include "SkSVGDefs.h"
-#include "SkSVGEllipse.h"
-#include "SkSVGFeColorMatrix.h"
-#include "SkSVGFilter.h"
-#include "SkSVGG.h"
-#include "SkSVGImage.h"
-#include "SkSVGLine.h"
-#include "SkSVGLinearGradient.h"
-#include "SkSVGMask.h"
-#include "SkSVGMetadata.h"
-#include "SkSVGPath.h"
-#include "SkSVGPolygon.h"
-#include "SkSVGPolyline.h"
-#include "SkSVGRadialGradient.h"
-#include "SkSVGRect.h"
-#include "SkSVGSVG.h"
-#include "SkSVGStop.h"
-#include "SkSVGSymbol.h"
-#include "SkSVGText.h"
-#include "SkSVGUse.h"
-#include "SkTSearch.h"
-#include <stdio.h>
-
-static int gGeneratedMatrixID = 0;
-
-SkSVGParser::SkSVGParser(SkXMLParserError* errHandler) :
-    SkXMLParser(errHandler),
-    fHead(&fEmptyPaint), fIDs(256),
-        fXMLWriter(&fStream), fCurrElement(nullptr), fInSVG(false), fSuppressPaint(false) {
-    fLastTransform.reset();
-    fEmptyPaint.f_fill.set("black");
-    fEmptyPaint.f_stroke.set("none");
-    fEmptyPaint.f_strokeMiterlimit.set("4");
-    fEmptyPaint.f_fillRule.set("winding");
-    fEmptyPaint.f_opacity.set("1");
-    fEmptyPaint.fNext = nullptr;
-    for (int index = SkSVGPaint::kInitial + 1; index < SkSVGPaint::kTerminal; index++) {
-        SkString* initial = fEmptyPaint[index];
-        if (initial->size() == 0)
-            continue;
-        fLastFlush[index]->set(*initial);
-    }
-}
-
-SkSVGParser::~SkSVGParser() {
-}
-
-void SkSVGParser::Delete(SkTDArray<SkSVGElement*>& fChildren) {
-    SkSVGElement** ptr;
-    for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
-        Delete((*ptr)->fChildren);
-        delete *ptr;
-    }
-}
-
-int SkSVGParser::findAttribute(SkSVGBase* element, const char* attrValue,
-        size_t len, bool isPaint) {
-    const SkSVGAttribute* attributes;
-    size_t count = element->getAttributes(&attributes);
-    size_t result = 0;
-    while (result < count) {
-        if (strncmp(attributes->fName, attrValue, len) == 0 && strlen(attributes->fName) == len) {
-            SkASSERT(result == (attributes->fOffset -
-                (isPaint ? sizeof(SkString) : sizeof(SkSVGElement))) / sizeof(SkString));
-            return result;
-        }
-        attributes++;
-        result++;
-    }
-    return -1;
-}
-
-#if 0
-const char* SkSVGParser::getFinal() {
-    _startElement("screenplay");
-    // generate defs
-    SkSVGElement** ptr;
-    for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
-        SkSVGElement* element = *ptr;
-        translate(element, true);
-    }
-    // generate onLoad
-    _startElement("event");
-    _addAttribute("kind", "onLoad");
-    _startElement("paint");
-    _addAttribute("antiAlias", "true");
-    _endElement();
-    for (ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
-        SkSVGElement* element = *ptr;
-        translate(element, false);
-    }
-    _endElement(); // event
-    _endElement(); // screenplay
-    Delete(fChildren);
-    fStream.write("", 1);
-    return fStream.getStream();
-}
-#endif
-
-SkString& SkSVGParser::getPaintLast(SkSVGPaint::Field field) {
-    SkSVGPaint* state = fHead;
-    do {
-        SkString* attr = (*state)[field];
-        SkASSERT(attr);
-        if (attr->size() > 0)
-            return *attr;
-        state = state->fNext;
-    } while (state);
-    SkASSERT(0);
-    SkASSERT(fEmptyPaint[field]);
-    return *fEmptyPaint[field];
-}
-
-bool SkSVGParser::isStrokeAndFill(  SkSVGPaint** strokeState, SkSVGPaint** fillState) {
-    SkSVGPaint* walking = fHead;
-    bool stroke = false;
-    bool fill = false;
-    bool strokeSet = false;
-    bool fillSet = false;
-    while (walking != nullptr) {
-        if (strokeSet == false && walking->f_stroke.size() > 0) {
-            stroke = walking->f_stroke.equals("none") == false;
-            *strokeState = walking;
-            strokeSet = true;
-        }
-        if (fillSet == false && walking->f_fill.size() > 0) {
-            fill = walking->f_fill.equals("none") == false;
-            *fillState = walking;
-            fillSet = true;
-        }
-        walking = walking->fNext;
-    }
-    return stroke && fill;
-}
-
-bool SkSVGParser::onAddAttribute(const char name[], const char value[]) {
-    return onAddAttributeLen(name, value, strlen(value));
-}
-
-bool SkSVGParser::onAddAttributeLen(const char name[], const char value[], size_t len) {
-    if (fCurrElement == nullptr)    // this signals we should ignore attributes for this element
-        return true;
-    if (fCurrElement->fIsDef == false && fCurrElement->fIsNotDef == false)
-        return false; // also an ignored element
-    size_t nameLen = strlen(name);
-    int attrIndex = findAttribute(fCurrElement, name, nameLen, false);
-    if (attrIndex == -1) {
-        attrIndex = findAttribute(&fCurrElement->fPaintState, name, nameLen, true);
-        if (attrIndex >= 0) {
-            fCurrElement->fPaintState.addAttribute(*this, attrIndex, value, len);
-            return false;
-        }
-        if (nameLen == 2 && strncmp("id", name, nameLen) == 0) {
-            fCurrElement->f_id.set(value, len);
-            return false;
-        }
-        if (strchr(name, ':') != 0) // part of a different namespace
-            return false;
-    }
-    SkASSERT(attrIndex >= 0);
-    fCurrElement->addAttribute(*this, attrIndex, value, len);
-    return false;
-}
-
-bool SkSVGParser::onEndElement(const char elem[]) {
-    int parentIndex = fParents.count() - 1;
-    if (parentIndex >= 0) {
-        SkSVGElement* element = fParents[parentIndex];
-        element->onEndElement(*this);
-        fParents.remove(parentIndex);
-    }
-    return false;
-}
-
-bool SkSVGParser::onStartElement(const char name[]) {
-    return onStartElementLen(name, strlen(name));
-}
-
-bool SkSVGParser::onStartElementLen(const char name[], size_t len) {
-    if (strncmp(name, "svg", len) == 0) {
-        fInSVG = true;
-    } else if (fInSVG == false)
-        return false;
-    const char* nextColon = strchr(name, ':');
-    if (nextColon && (size_t)(nextColon - name) < len)
-        return false;
-    SkSVGTypes type = GetType(name, len);
-//    SkASSERT(type >= 0);
-    if (type < 0) {
-        type = SkSVGType_G;
-//        return true;
-    }
-    SkSVGElement* parent = fParents.count() > 0 ? fParents.top() : nullptr;
-    SkSVGElement* element = CreateElement(type, parent);
-    bool result = false;
-    if (parent) {
-        element->fParent = parent;
-        result = fParents.top()->onStartElement(element);
-    } else
-        *fChildren.append() = element;
-    if (strncmp(name, "svg", len) != 0)
-        *fParents.append() = element;
-    fCurrElement = element;
-    return result;
-}
-
-bool SkSVGParser::onText(const char text[], int len) {
-    if (fInSVG == false)
-        return false;
-    SkSVGTypes type = fCurrElement->getType();
-    if (type != SkSVGType_Text && type != SkSVGType_Tspan)
-        return false;
-    SkSVGText* textElement = (SkSVGText*) fCurrElement;
-    textElement->f_text.set(text, len);
-    return false;
-}
-
-static int32_t strokeFillID = 0;
-
-void SkSVGParser::translate(SkSVGElement* element, bool isDef) {
-    SkSVGPaint::Push(&fHead, &element->fPaintState);
-    bool isFlushable = element->isFlushable();
-    if ((element->fIsDef == false && element->fIsNotDef == false) ||
-        (element->fIsDef && isDef == false && element->fIsNotDef == false) ||
-        (element->fIsDef == false && isDef && element->fIsNotDef)) {
-        isFlushable = false;
-    }
-    SkSVGPaint* strokeState = nullptr, * fillState = nullptr;
-    if (isFlushable)
-        element->fPaintState.setSave(*this);
-    if (isFlushable && isStrokeAndFill(&strokeState, &fillState)) {
-        SkString& elementID = element->f_id;
-        if (elementID.size() == 0) {
-            elementID.set("sf");
-            elementID.appendS32(++strokeFillID);
-        }
-        SkString saveStroke(strokeState->f_stroke);
-        SkString saveFill(fillState->f_fill);
-        strokeState->f_stroke.set("none");
-        element->fPaintState.flush(*this, isFlushable, isDef);
-        element->translate(*this, isDef);
-        strokeState->f_stroke.set(saveStroke);
-        fillState->f_fill.set("none");
-        if (element->fPaintState.flush(*this, isFlushable, isDef)) {
-            _startElement("add");
-            _addAttributeLen("use", elementID.c_str(), elementID.size());
-            _endElement();  // add
-        }
-        fillState->f_fill.set(saveFill);
-    } else {
-        element->fPaintState.flush(*this, isFlushable, isDef);
-        if (isFlushable || element->isGroup())
-            element->translate(*this, isDef);
-    }
-    SkSVGPaint::Pop(&fHead);
-}
-
-void SkSVGParser::translateMatrix(SkString& string, SkString* stringID) {
-    if (string.size() == 0)
-        return;
-    if (stringID->size() > 0) {
-        _startElement("add");
-        _addAttribute("use", stringID->c_str());
-        _endElement(); // add
-        return;
-    }
-    SkASSERT(strncmp(string.c_str(), "matrix", 6) == 0);
-    ++gGeneratedMatrixID;
-    _startElement("matrix");
-    char idStr[24];
-    strcpy(idStr, "sk_matrix");
-    sprintf(idStr + strlen(idStr), "%d", gGeneratedMatrixID);
-    _addAttribute("id", idStr);
-    stringID->set(idStr);
-    const char* str = string.c_str();
-    SkASSERT(strncmp(str, "matrix(", 7) == 0);
-    str += 6;
-    const char* strEnd = strrchr(str, ')');
-    SkASSERT(strEnd != nullptr);
-    SkString mat(str, strEnd - str);
-    ConvertToArray(mat);
-    const char* elems[6];
-    static const int order[] = {0, 3, 1, 4, 2, 5};
-    const int* orderPtr = order;
-    str = mat.c_str();
-    strEnd = str + mat.size();
-    while (str < strEnd) {
-        elems[*orderPtr++] = str;
-        while (str < strEnd && *str != ',' )
-            str++;
-        str++;
-    }
-    string.reset();
-    for (int index = 0; index < 6; index++) {
-        const char* end = strchr(elems[index], ',');
-        if (end == nullptr)
-            end= strchr(elems[index], ']');
-        string.append(elems[index], end - elems[index] + 1);
-    }
-    string.remove(string.size() - 1, 1);
-    string.append(",0,0,1]");
-    _addAttribute("matrix", string);
-    _endElement();  // matrix
-}
-
-static bool is_whitespace(char ch) {
-    return ch > 0 && ch <= ' ';
-}
-
-void SkSVGParser::ConvertToArray(SkString& vals) {
-    vals.appendUnichar(']');
-    char* valCh = (char*) vals.c_str();
-    valCh[0] = '[';
-    int index = 1;
-    while (valCh[index] != ']') {
-        while (is_whitespace(valCh[index]))
-            index++;
-        bool foundComma = false;
-        char next;
-        do {
-            next = valCh[index++];
-            if (next == ',') {
-                foundComma = true;
-                continue;
-            }
-            if (next == ']') {
-                index--;
-                goto undoLastComma;
-            }
-            if (next == ' ')
-                break;
-            foundComma = false;
-        } while (is_whitespace(next) == false);
-        if (foundComma == false)
-            valCh[index - 1] = ',';
-    }
-undoLastComma:
-    while (is_whitespace(valCh[--index]))
-        ;
-    if (valCh[index] == ',')
-        valCh[index] = ' ';
-}
-
-#define CASE_NEW(type) case SkSVGType_##type : created = new SkSVG##type(); break
-
-SkSVGElement* SkSVGParser::CreateElement(SkSVGTypes type, SkSVGElement* parent) {
-    SkSVGElement* created = nullptr;
-    switch (type) {
-        CASE_NEW(Circle);
-        CASE_NEW(ClipPath);
-        CASE_NEW(Defs);
-        CASE_NEW(Ellipse);
-        CASE_NEW(FeColorMatrix);
-        CASE_NEW(Filter);
-        CASE_NEW(G);
-        CASE_NEW(Image);
-        CASE_NEW(Line);
-        CASE_NEW(LinearGradient);
-        CASE_NEW(Mask);
-        CASE_NEW(Metadata);
-        CASE_NEW(Path);
-        CASE_NEW(Polygon);
-        CASE_NEW(Polyline);
-        CASE_NEW(RadialGradient);
-        CASE_NEW(Rect);
-        CASE_NEW(Stop);
-        CASE_NEW(SVG);
-        CASE_NEW(Symbol);
-        CASE_NEW(Text);
-        CASE_NEW(Tspan);
-        CASE_NEW(Use);
-        default:
-            SkASSERT(0);
-            return nullptr;
-    }
-    created->fParent = parent;
-    bool isDef = created->fIsDef = created->isDef();
-    bool isNotDef = created->fIsNotDef = created->isNotDef();
-    if (isDef) {
-        SkSVGElement* up = parent;
-        while (up && up->fIsDef == false) {
-            up->fIsDef = true;
-            up = up->fParent;
-        }
-    }
-    if (isNotDef) {
-        SkSVGElement* up = parent;
-        while (up && up->fIsNotDef == false) {
-            up->fIsNotDef = true;
-            up = up->fParent;
-        }
-    }
-    return created;
-}
-
-const SkSVGTypeName gSVGTypeNames[] = {
-    {"circle", SkSVGType_Circle},
-    {"clipPath", SkSVGType_ClipPath},
-    {"defs", SkSVGType_Defs},
-    {"ellipse", SkSVGType_Ellipse},
-    {"feColorMatrix", SkSVGType_FeColorMatrix},
-    {"filter", SkSVGType_Filter},
-    {"g", SkSVGType_G},
-    {"image", SkSVGType_Image},
-    {"line", SkSVGType_Line},
-    {"linearGradient", SkSVGType_LinearGradient},
-    {"mask", SkSVGType_Mask},
-    {"metadata", SkSVGType_Metadata},
-    {"path", SkSVGType_Path},
-    {"polygon", SkSVGType_Polygon},
-    {"polyline", SkSVGType_Polyline},
-    {"radialGradient", SkSVGType_RadialGradient},
-    {"rect", SkSVGType_Rect},
-    {"stop", SkSVGType_Stop},
-    {"svg", SkSVGType_SVG},
-    {"symbol", SkSVGType_Symbol},
-    {"text", SkSVGType_Text},
-    {"tspan", SkSVGType_Tspan},
-    {"use", SkSVGType_Use}
-};
-
-const int kSVGTypeNamesSize = SK_ARRAY_COUNT(gSVGTypeNames);
-
-SkSVGTypes SkSVGParser::GetType(const char match[], size_t len ) {
-    int index = SkStrSearch(&gSVGTypeNames[0].fName, kSVGTypeNamesSize, match,
-        len, sizeof(gSVGTypeNames[0]));
-    return index >= 0 && index < kSVGTypeNamesSize ? gSVGTypeNames[index].fType :
-        (SkSVGTypes) -1;
-}