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      1 //
      2 // Copyright 2006 The Android Open Source Project
      3 //
      4 // Build resource files from raw assets.
      5 //
      6 
      7 #ifndef XML_NODE_H
      8 #define XML_NODE_H
      9 
     10 #include "StringPool.h"
     11 #include "ResourceTable.h"
     12 
     13 #include <expat.h>
     14 
     15 class XMLNode;
     16 
     17 extern const char* const RESOURCES_ROOT_NAMESPACE;
     18 extern const char* const RESOURCES_ANDROID_NAMESPACE;
     19 
     20 bool isWhitespace(const char16_t* str);
     21 
     22 String16 getNamespaceResourcePackage(String16 namespaceUri, bool* outIsPublic = NULL);
     23 
     24 status_t parseStyledString(Bundle* bundle,
     25                            const char* fileName,
     26                            ResXMLTree* inXml,
     27                            const String16& endTag,
     28                            String16* outString,
     29                            Vector<StringPool::entry_style_span>* outSpans,
     30                            bool isFormatted,
     31                            PseudolocalizationMethod isPseudolocalizable);
     32 
     33 void printXMLBlock(ResXMLTree* block);
     34 
     35 status_t parseXMLResource(const sp<AaptFile>& file, ResXMLTree* outTree,
     36                           bool stripAll=true, bool keepComments=false,
     37                           const char** cDataTags=NULL);
     38 
     39 class XMLNode : public RefBase
     40 {
     41 public:
     42     static sp<XMLNode> parse(const sp<AaptFile>& file);
     43 
     44     static inline
     45     sp<XMLNode> newNamespace(const String8& filename, const String16& prefix, const String16& uri) {
     46         return new XMLNode(filename, prefix, uri, true);
     47     }
     48 
     49     static inline
     50     sp<XMLNode> newElement(const String8& filename, const String16& ns, const String16& name) {
     51         return new XMLNode(filename, ns, name, false);
     52     }
     53 
     54     static inline
     55     sp<XMLNode> newCData(const String8& filename) {
     56         return new XMLNode(filename);
     57     }
     58 
     59     enum type {
     60         TYPE_NAMESPACE,
     61         TYPE_ELEMENT,
     62         TYPE_CDATA
     63     };
     64 
     65     type getType() const;
     66 
     67     const String16& getNamespacePrefix() const;
     68     const String16& getNamespaceUri() const;
     69 
     70     const String16& getElementNamespace() const;
     71     const String16& getElementName() const;
     72     const Vector<sp<XMLNode> >& getChildren() const;
     73     Vector<sp<XMLNode> >& getChildren();
     74 
     75     const String8& getFilename() const;
     76 
     77     struct attribute_entry {
     78         attribute_entry() : index(~(uint32_t)0), nameResId(0)
     79         {
     80             value.dataType = Res_value::TYPE_NULL;
     81         }
     82 
     83         bool needStringValue() const {
     84             return nameResId == 0
     85                 || value.dataType == Res_value::TYPE_NULL
     86                 || value.dataType == Res_value::TYPE_STRING;
     87         }
     88 
     89         String16 ns;
     90         String16 name;
     91         String16 string;
     92         Res_value value;
     93         uint32_t index;
     94         uint32_t nameResId;
     95         mutable uint32_t namePoolIdx;
     96     };
     97 
     98     const Vector<attribute_entry>& getAttributes() const;
     99 
    100     const attribute_entry* getAttribute(const String16& ns, const String16& name) const;
    101     bool removeAttribute(const String16& ns, const String16& name);
    102 
    103     attribute_entry* editAttribute(const String16& ns, const String16& name);
    104 
    105     const String16& getCData() const;
    106 
    107     const String16& getComment() const;
    108 
    109     int32_t getStartLineNumber() const;
    110     int32_t getEndLineNumber() const;
    111 
    112     sp<XMLNode> searchElement(const String16& tagNamespace, const String16& tagName);
    113 
    114     sp<XMLNode> getChildElement(const String16& tagNamespace, const String16& tagName);
    115 
    116     status_t addChild(const sp<XMLNode>& child);
    117 
    118     status_t insertChildAt(const sp<XMLNode>& child, size_t index);
    119 
    120     status_t addAttribute(const String16& ns, const String16& name,
    121                           const String16& value);
    122 
    123     status_t removeAttribute(size_t index);
    124 
    125     void setAttributeResID(size_t attrIdx, uint32_t resId);
    126 
    127     status_t appendChars(const String16& chars);
    128 
    129     status_t appendComment(const String16& comment);
    130 
    131     void setStartLineNumber(int32_t line);
    132     void setEndLineNumber(int32_t line);
    133 
    134     void removeWhitespace(bool stripAll=true, const char** cDataTags=NULL);
    135 
    136     void setUTF8(bool val) { mUTF8 = val; }
    137 
    138     status_t parseValues(const sp<AaptAssets>& assets, ResourceTable* table);
    139 
    140     status_t assignResourceIds(const sp<AaptAssets>& assets,
    141                                const ResourceTable* table = NULL);
    142 
    143     status_t flatten(const sp<AaptFile>& dest, bool stripComments,
    144             bool stripRawValues) const;
    145 
    146     sp<XMLNode> clone() const;
    147 
    148     void print(int indent=0);
    149 
    150 private:
    151     struct ParseState
    152     {
    153         String8 filename;
    154         XML_Parser parser;
    155         sp<XMLNode> root;
    156         Vector<sp<XMLNode> > stack;
    157         String16 pendingComment;
    158     };
    159 
    160     static void XMLCALL
    161     startNamespace(void *userData, const char *prefix, const char *uri);
    162     static void XMLCALL
    163     startElement(void *userData, const char *name, const char **atts);
    164     static void XMLCALL
    165     characterData(void *userData, const XML_Char *s, int len);
    166     static void XMLCALL
    167     endElement(void *userData, const char *name);
    168     static void XMLCALL
    169     endNamespace(void *userData, const char *prefix);
    170 
    171     static void XMLCALL
    172     commentData(void *userData, const char *comment);
    173 
    174     // For cloning
    175     XMLNode();
    176 
    177     // Creating an element node.
    178     XMLNode(const String8& filename, const String16& s1, const String16& s2, bool isNamespace);
    179 
    180     // Creating a CDATA node.
    181     explicit XMLNode(const String8& filename);
    182 
    183     status_t collect_strings(StringPool* dest, Vector<uint32_t>* outResIds,
    184             bool stripComments, bool stripRawValues) const;
    185 
    186     status_t collect_attr_strings(StringPool* outPool,
    187         Vector<uint32_t>* outResIds, bool allAttrs) const;
    188 
    189     status_t collect_resid_strings(StringPool* outPool,
    190             Vector<uint32_t>* outResIds) const;
    191 
    192     status_t flatten_node(const StringPool& strings, const sp<AaptFile>& dest,
    193             bool stripComments, bool stripRawValues) const;
    194 
    195     String16 mNamespacePrefix;
    196     String16 mNamespaceUri;
    197     String16 mElementName;
    198     Vector<sp<XMLNode> > mChildren;
    199     Vector<attribute_entry> mAttributes;
    200     KeyedVector<uint32_t, uint32_t> mAttributeOrder;
    201     uint32_t mNextAttributeIndex;
    202     String16 mChars;
    203     Res_value mCharsValue;
    204     String16 mComment;
    205     String8 mFilename;
    206     int32_t mStartLineNumber;
    207     int32_t mEndLineNumber;
    208 
    209     // Encode compiled XML with UTF-8 StringPools?
    210     bool mUTF8;
    211 };
    212 
    213 #endif
    214