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https://github.com/Relintai/rcpp_framework.git
synced 2024-11-14 04:57:21 +01:00
Implemented a few helpers for the HTMLParser.
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@ -8,11 +8,11 @@ bool HTMLParserAttribute::match_data(const String &d) {
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return data == d;
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}
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bool HTMLParserAttribute::match_data(const Vector<String> &d) {
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//todo
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// todo
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return false;
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}
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bool HTMLParserAttribute::contains_data(const String &d) {
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return attribute.find(d) != -1;
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return data.find(d) != -1;
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}
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String HTMLParserAttribute::to_string() {
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@ -38,6 +38,98 @@ HTMLParserAttribute::HTMLParserAttribute() {
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HTMLParserAttribute::~HTMLParserAttribute() {
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}
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HTMLParserTag *HTMLParserTag::get_first(const String &t) {
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if (tag == t) {
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return this;
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}
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for (int i = 0; i < tags.size(); ++i) {
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HTMLParserTag *ht = tags[i]->get_first(t);
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if (ht) {
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return ht;
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}
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}
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return nullptr;
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}
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HTMLParserTag *HTMLParserTag::get_first(const String &t, const String &attrib, const String &val) {
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if (tag == t) {
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if (has_attribute(attrib, val)) {
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return this;
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}
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}
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for (int i = 0; i < tags.size(); ++i) {
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HTMLParserTag *ht = tags[i]->get_first(t, attrib, val);
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if (ht) {
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return ht;
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}
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}
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return nullptr;
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}
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String HTMLParserTag::get_attribute_value(const String &attrib) {
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HTMLParserAttribute *a = get_attribute(attrib);
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if (a) {
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return a->data;
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}
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return "";
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}
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HTMLParserAttribute *HTMLParserTag::get_attribute(const String &attrib) {
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for (int i = 0; i < attributes.size(); ++i) {
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HTMLParserAttribute *a = attributes[i];
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if (a->match_attrib(attrib)) {
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return a;
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}
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}
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return nullptr;
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}
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bool HTMLParserTag::has_attribute(const String &attrib) {
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for (int i = 0; i < attributes.size(); ++i) {
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HTMLParserAttribute *a = attributes[i];
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if (a->match_attrib(attrib)) {
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return true;
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}
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}
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return false;
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}
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HTMLParserAttribute *HTMLParserTag::get_attribute(const String &attrib, const String &contains_val) {
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for (int i = 0; i < attributes.size(); ++i) {
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HTMLParserAttribute *a = attributes[i];
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if (a->match_attrib(attrib) && a->contains_data(contains_val)) {
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return a;
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}
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}
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return nullptr;
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}
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bool HTMLParserTag::has_attribute(const String &attrib, const String &contains_val) {
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for (int i = 0; i < attributes.size(); ++i) {
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HTMLParserAttribute *a = attributes[i];
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if (a->match_attrib(attrib) && a->contains_data(contains_val)) {
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return true;
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}
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}
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return false;
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}
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void HTMLParserTag::process() {
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if (type != HTMLParserTag::HTML_PARSER_TAG_TYPE_NONE) {
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return;
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@ -60,7 +152,7 @@ void HTMLParserTag::process() {
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return;
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}
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//test for comment. <!-- -->
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// test for comment. <!-- -->
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++start_index;
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if (data[2] == '-' && data[3] == '-') {
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type = HTMLParserTag::HTML_PARSER_TAG_TYPE_COMMENT;
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@ -78,7 +170,7 @@ void HTMLParserTag::process() {
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return;
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}
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//test for doctype. <!doctype >
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// test for doctype. <!doctype >
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int doctype_start_index = data.find("doctype ", 2);
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if (doctype_start_index == -1) {
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@ -92,9 +184,9 @@ void HTMLParserTag::process() {
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String tag_text;
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if (data[data.size() - 2] == '/') {
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//will catch all that looks like <br/>
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//tags that look like <br> will be caught later in a post process, in a way
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//which also tries to catch erroneously not closed tags that supposed to be closed
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// will catch all that looks like <br/>
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// tags that look like <br> will be caught later in a post process, in a way
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// which also tries to catch erroneously not closed tags that supposed to be closed
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type = HTMLParserTag::HTML_PARSER_TAG_TYPE_SELF_CLOSING_TAG;
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tag_text = data.substr(1, data.size() - 3);
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@ -107,12 +199,12 @@ void HTMLParserTag::process() {
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int fspc_index = tag_text.find(' ');
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if (fspc_index == -1) {
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//no args
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// no args
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tag = tag_text;
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return;
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}
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//grab the tag itself
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// grab the tag itself
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tag = tag_text.substr(0, fspc_index);
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String args = tag_text.substr(fspc_index + 1, tag_text.size() - fspc_index - 1);
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@ -122,7 +214,7 @@ void HTMLParserTag::process() {
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int tag_end_index = data.find(' ', start_index);
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if (tag_end_index == -1) {
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//simple tag
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// simple tag
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tag = data.substr(start_index, data.size() - start_index - 1);
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return;
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}
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@ -153,23 +245,23 @@ void HTMLParserTag::parse_args(const String &args) {
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a->attribute = args.substr(i, equals_index - i);
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//todo
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//a.trim();
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// todo
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// a.trim();
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int next_char_index = equals_index + 1;
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if (next_char_index >= args.size()) {
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//an attribute looks like this "... attrib="
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// an attribute looks like this "... attrib="
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attributes.push_back(a);
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return;
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}
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//skip spaces
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// skip spaces
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while (args[next_char_index] == ' ') {
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++next_char_index;
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if (next_char_index >= args.size()) {
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//an attribute looks like this "... attrib= "
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// an attribute looks like this "... attrib= "
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attributes.push_back(a);
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return;
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}
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@ -186,8 +278,8 @@ void HTMLParserTag::parse_args(const String &args) {
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int end_index = args.find(find_char, next_char_index);
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if (end_index == -1) {
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//missing closing ' or " if c is ' or "
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//else missing parameter
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// missing closing ' or " if c is ' or "
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// else missing parameter
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a->data = args.substr(next_char_index, args.size() - next_char_index - 1);
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attributes.push_back(a);
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@ -236,8 +328,8 @@ String HTMLParserTag::to_string(const int level) {
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s += "</" + tag + ">\n";
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} else if (type == HTML_PARSER_TAG_TYPE_CLOSING_TAG) {
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//HTMLParserTag should handle this automatically
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//it's here for debugging purposes though
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// HTMLParserTag should handle this automatically
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// it's here for debugging purposes though
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s += "</" + tag + "(!)>";
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if (tags.size() != 0) {
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@ -317,7 +409,7 @@ HTMLParserTag::~HTMLParserTag() {
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void HTMLParser::parse(const String &data) {
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Vector<HTMLParserTag *> tags;
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//split into tags
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// split into tags
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for (int i = 0; i < data.size(); ++i) {
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if (data[i] == '<') {
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for (int j = i + 1; j < data.size(); ++j) {
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@ -356,7 +448,7 @@ void HTMLParser::parse(const String &data) {
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root = new HTMLParserTag();
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//process tags into hierarchical order
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// process tags into hierarchical order
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Vector<HTMLParserTag *> tag_stack;
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for (int i = 0; i < tags.size(); ++i) {
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HTMLParserTag *t = tags[i];
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@ -417,18 +509,18 @@ void HTMLParser::parse(const String &data) {
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delete t;
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tags[i] = nullptr;
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//ill-formed html
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// ill-formed html
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continue;
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}
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//find it's pair
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// find it's pair
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int tag_index = 0;
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for (int j = tag_stack.size() - 1; j > 0; --j) {
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HTMLParserTag *ts = tag_stack[j];
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//we sould only have opening tags on the stack
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// we sould only have opening tags on the stack
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if (ts->tag == t->tag) {
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//found
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// found
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tag_index = j;
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break;
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}
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@ -436,8 +528,8 @@ void HTMLParser::parse(const String &data) {
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HTMLParserTag *opening_tag = tag_stack[tag_index];
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//mark everything else that we found before finding the opening tag as self closing, and add them to out opening tag
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//If the html is ill formed, it just grabs everything from the tag stack
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// mark everything else that we found before finding the opening tag as self closing, and add them to out opening tag
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// If the html is ill formed, it just grabs everything from the tag stack
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for (int j = tag_index + 1; j < tag_stack.size(); ++j) {
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HTMLParserTag *ts = tag_stack[j];
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@ -460,7 +552,7 @@ void HTMLParser::parse(const String &data) {
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}
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}
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//add everything remaining on the stack to root
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// add everything remaining on the stack to root
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for (int i = 0; i < tag_stack.size(); ++i) {
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root->tags.push_back(tag_stack[i]);
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}
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@ -42,6 +42,17 @@ public:
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Vector<HTMLParserTag*> tags;
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Vector<HTMLParserAttribute*> attributes;
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HTMLParserTag *get_first(const String &t);
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HTMLParserTag *get_first(const String &t, const String &attrib, const String &val);
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String get_attribute_value(const String &attrib);
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HTMLParserAttribute *get_attribute(const String &attrib);
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bool has_attribute(const String &attrib);
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HTMLParserAttribute *get_attribute(const String &attrib, const String &contains_val);
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bool has_attribute(const String &attrib, const String &contains_val);
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void process();
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void parse_args(const String &args);
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