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#ifndef NEWSBOAT_HTMLRENDERER_H_
#define NEWSBOAT_HTMLRENDERER_H_
#include <istream>
#include <map>
#include <string>
#include <vector>
#include "textformatter.h"
namespace newsboat {
class TagSoupPullParser;
// This enum has to be kept in sync with enum LinkType in rust/libnewsboat/src/htmlrenderer.rs
enum class LinkType { HREF, IMG, EMBED, IFRAME, VIDEO, AUDIO };
enum class HtmlTag {
A = 1,
EMBED,
IFRAME,
BR,
PRE,
ITUNESHACK,
IMG,
BLOCKQUOTE,
H1,
H2,
H3,
H4,
H5,
H6,
P,
DIV,
OL,
UL,
LI,
DT,
DD,
DL,
SUP,
SUB,
HR,
STRONG,
UNDERLINE,
QUOTATION,
SCRIPT,
STYLE,
TABLE,
TH,
TR,
TD,
VIDEO,
AUDIO,
SOURCE
};
typedef std::pair<std::string, LinkType> LinkPair;
class HtmlRenderer {
public:
explicit HtmlRenderer(bool raw = false);
void render(const std::string& source,
std::vector<std::pair<LineType, std::string>>& lines,
std::vector<LinkPair>& links,
const std::string& url);
void render(std::istream& input,
std::vector<std::pair<LineType, std::string>>& lines,
std::vector<LinkPair>& links,
const std::string& url);
static std::string render_hr(const unsigned int width);
// only public for unit testing purposes:
std::string format_ol_count(unsigned int count, char type);
struct TableCell {
explicit TableCell(size_t s)
: span(s)
{
}
size_t span;
std::vector<std::string> text; // multiline cell text
};
struct TableRow {
TableRow()
: inside(false)
{
}
void add_text(const std::string& str);
void start_cell(size_t span);
void complete_cell();
bool inside; // inside a cell
std::vector<TableCell> cells;
};
struct Table {
explicit Table(bool b)
: inside(false)
, has_border(b)
{
}
void add_text(const std::string& str);
void start_row();
void complete_row();
void start_cell(size_t span);
void complete_cell();
bool inside; // inside a row
bool has_border;
std::vector<TableRow> rows;
};
private:
void prepare_new_line(std::string& line, int indent_level);
bool line_is_nonempty(const std::string& line);
unsigned int add_link(std::vector<LinkPair>& links,
const std::string& link,
LinkType type);
std::string absolute_url(const std::string& url,
const std::string& link);
std::string type2str(LinkType type);
std::map<std::string, HtmlTag> tags;
void render_table(const Table& table,
std::vector<std::pair<LineType, std::string>>& lines);
void add_nonempty_line(const std::string& curline,
std::vector<Table>& tables,
std::vector<std::pair<LineType, std::string>>& lines);
void add_line(const std::string& curline,
std::vector<Table>& tables,
std::vector<std::pair<LineType, std::string>>& lines);
void add_line_softwrappable(const std::string& line,
std::vector<std::pair<LineType, std::string>>& lines);
void add_line_nonwrappable(const std::string& line,
std::vector<std::pair<LineType, std::string>>& lines);
void add_hr(std::vector<std::pair<LineType, std::string>>& lines);
std::string get_char_numbering(unsigned int count);
std::string get_roman_numbering(unsigned int count);
void add_media_link(std::string& line, std::vector<LinkPair>& links,
const std::string& url, const std::string& media_url,
const std::string& media_title, unsigned int media_count,
LinkType type);
HtmlTag extract_tag(TagSoupPullParser& parser);
bool raw_;
};
} // namespace newsboat
#endif /* NEWSBOAT_HTMLRENDERER_H_ */
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