kolibrios/programs/cmm/TWB/TWB.c
Kirill Lipatov (Leency) 646af6780b WebView: proceed tags like "&nbsp" without ';' at the end
Downloader: handle "content-disposition" header to set correct filename from server renponse 

git-svn-id: svn://kolibrios.org@8319 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-12-04 11:58:20 +00:00

612 lines
18 KiB
C

#include "..\TWB\colors.h"
#include "..\TWB\anchors.h"
#include "..\TWB\parse_tag.h"
#include "..\TWB\special.h"
#include "..\TWB\img.h"
#include "..\TWB\tag_list.h"
dword page_bg;
dword link_color_default;
dword link_color_active;
#include "..\TWB\links.h"
#define BODY_MARGIN 6
#define BASIC_LINE_H 18
DrawBufer DrawBuf;
char line[500];
struct _style {
bool
b, u, s, h,
font,
pre,
blq,
button,
image;
dword bg_color;
LIST tag_list;
dword tag_title;
};
struct TWebBrowser {
llist list;
_style style;
_img page_img;
dword draw_y, stolbec;
int zoom;
dword o_bufpointer;
int cur_encoding, custom_encoding;
bool link, t_html, t_body;
dword bufpointer;
dword bufsize;
dword is_html;
void Paint();
void SetPageDefaults();
void AddCharToTheLine();
void ParseHtml();
void SetStyle();
bool CheckForLineBreak();
void NewLine();
void DrawScroller();
void ChangeEncoding();
void DrawPage();
char header[150];
char redirect[URL_SIZE];
};
scroll_bar scroll_wv = { 15,NULL,NULL,NULL,0,2,NULL,0,0,0xeeeeee,0xBBBbbb,0xeeeeee};
//============================================================================================
void TWebBrowser::Paint()
{
dword start_x, line_length, stolbec_len;
dword text_color__;
if (style.tag_title)
{
strncpy(#header, #line, sizeof(TWebBrowser.header)-1);
strncat(#header, " - ", sizeof(TWebBrowser.header)-1);
strncat(#header, #version, sizeof(TWebBrowser.header)-1);
line = 0;
return;
}
if (t_html) && (!t_body) {
line = 0;
return;
}
if (line)
{
start_x = stolbec * list.font_w + BODY_MARGIN + list.x;
stolbec_len = strlen(#line) * zoom;
line_length = stolbec_len * list.font_w;
if (debug_mode) {
DrawBuf.DrawBar(start_x, draw_y, line_length, list.item_h, 0xDDDddd);
}
if (style.bg_color!=page_bg) {
DrawBuf.DrawBar(start_x, draw_y, line_length, list.item_h, style.bg_color);
}
if (style.image) {
DrawBuf.DrawBar(start_x, draw_y, line_length, list.item_h-1, 0xF9DBCB);
}
if (style.button) {
DrawBuf.DrawBar(start_x, draw_y, line_length, list.item_h - calc(zoom*2), 0xCCCccc);
DrawBuf.DrawBar(start_x, draw_y + list.item_h - calc(zoom*2), line_length, zoom, 0x999999);
}
text_color__ = text_colors.get_last();
if (link) && (text_color__ == text_colors.get(0)) text_color__ = link_color_default;
DrawBuf.WriteText(start_x, draw_y, list.font_type, text_color__, #line, NULL);
if (style.b) DrawBuf.WriteText(start_x+1, draw_y, list.font_type, text_color__, #line, NULL);
if (style.s) DrawBuf.DrawBar(start_x, list.item_h / 2 - zoom + draw_y, line_length, zoom, text_color__);
if (style.u) DrawBuf.DrawBar(start_x, list.item_h - zoom - zoom + draw_y, line_length, zoom, text_color__);
if (link) {
if (line[0]==' ') && (line[1]==NULL) {} else {
DrawBuf.DrawBar(start_x, draw_y + list.item_h - calc(zoom*2)-1, line_length, zoom, link_color_default);
links.add_text(start_x, draw_y + list.y, line_length, list.item_h - calc(zoom*2)-1, zoom);
}
}
stolbec += stolbec_len;
if (debug_mode) debug(#line);
line = NULL;
}
}
//============================================================================================
void TWebBrowser::SetPageDefaults()
{
style.b = style.u = style.s = style.h = style.blq = t_html = t_body = style.pre =
link = style.tag_title = style.font = false;
style.tag_list.reset();
link_color_default = 0x0000FF;
link_color_active = 0xFF0000;
page_bg = 0xFFFFFF;
style.bg_color = page_bg;
DrawBuf.Fill(0, page_bg);
links.clear();
anchors.clear();
page_img.clear();
text_colors.drop();
text_colors.add(0);
header = NULL;
cur_encoding = CH_CP866;
draw_y = BODY_MARGIN;
stolbec = 0;
line = 0;
zoom = 1;
redirect = '\0';
//hold original buffer
if (o_bufpointer) o_bufpointer=free(o_bufpointer);
o_bufpointer = malloc(bufsize);
memmov(o_bufpointer, bufpointer, bufsize);
if (custom_encoding != -1) {
cur_encoding = custom_encoding;
bufpointer = ChangeCharset(cur_encoding, "CP866", bufpointer);
}
}
//============================================================================================
void TWebBrowser::AddCharToTheLine(unsigned char _char)
{
dword line_len;
if (_char<=15) _char=' ';
line_len = strlen(#line);
if (!style.pre) && (_char == ' ')
{
if (line[line_len-1]==' ') return; //no double spaces
if (!stolbec) && (!line) return; //no paces at the beginning of the line
}
if (line_len < sizeof(line)) chrcat(#line, _char);
CheckForLineBreak();
}
//============================================================================================
void TWebBrowser::ParseHtml(dword _bufpointer, _bufsize){
word bukva[2];
char unicode_symbol[10];
dword unicode_symbol_result;
dword j;
bool ignor_param=false;
int tab_len;
dword bufpos;
bufsize = _bufsize;
if (bufpointer != _bufpointer) {
bufpointer = malloc(bufsize);
memmov(bufpointer, _bufpointer, bufsize);
} else {
custom_encoding = CH_CP866;
}
SetPageDefaults();
is_html = true;
if (!strstri(bufpointer, "<body")) {
t_body = true;
if (!strstri(bufpointer, "<html")) && (!strstr(bufpointer, "<?xml")) && (!strstr(bufpointer, "<xml")) {
style.pre = true; //show linebreaks for a plaint text
is_html = false;
}
}
for (bufpos=bufpointer ; (bufpos < bufpointer+bufsize) && (ESBYTE[bufpos]!=0) ; bufpos++;)
{
bukva = ESBYTE[bufpos];
switch (bukva)
{
case 0x0a:
if (style.pre) {
Paint();
NewLine();
} else {
AddCharToTheLine(0x0a);
}
break;
case 0x09:
if (style.pre) {
tab_len = strlen(#line) + stolbec % 4;
if (!tab_len) tab_len = 4; else tab_len = 4 - tab_len;
for (j=0; j<tab_len; j++;) chrcat(#line,' ');
} else {
AddCharToTheLine(0x09);
}
break;
case '&': //&nbsp; and so on
for (j=1, unicode_symbol=0; (ESBYTE[bufpos+j]<>';') && (!__isWhite(ESBYTE[bufpos+j])) && (j<8); j++)
{
bukva = ESBYTE[bufpos+j];
chrcat(#unicode_symbol, bukva);
}
if (GetUnicodeSymbol(#line, #unicode_symbol, sizeof(line)-1)) {
bufpos += j;
CheckForLineBreak();
} else {
AddCharToTheLine('&');
}
break;
case '<':
if (!is_html) goto _default;
bufpos++;
if (!strncmp(bufpos,"!--",3))
{
bufpos+=3;
while (strncmp(bufpos,"-->",3)!=0) && (bufpos < bufpointer + bufsize)
{
bufpos++;
}
bufpos+=2;
break;
}
tag.reset();
if (ESBYTE[bufpos] == '/') {
tag.opened = false;
bufpos++;
}
ignor_param=false;
while (ESBYTE[bufpos] !='>') && (bufpos < bufpointer + bufsize) //ïîëó÷àåì òåã è åãî ïàðàìåòðû
{
bukva = ESBYTE[bufpos];
if (bukva == '\x9') || (bukva == '\x0a') || (bukva == '\x0d') bukva = ' ';
if (!ignor_param) && (bukva <>' ')
{
if (strlen(#tag.name)+1<sizeof(tag.name)) chrcat(#tag.name, bukva);
}
else
{
ignor_param = true;
if (strlen(#tag.params)+1<sizeof(tag.params)) strcat(#tag.params, #bukva);
//chrncat(#tag.params, bukva, sizeof(tag.params)-1);
}
bufpos++;
}
strlwr(#tag.name);
// ignore text inside the next tags
if (tag.is("script")) || (tag.is("style")) || (tag.is("binary")) || (tag.is("select")) {
sprintf(#tag.params, "</%s>", #tag.name);
if (j = strstri(bufpos, #tag.params)) bufpos = j-1;
break;
}
if (tag.name[strlen(#tag.name)-1]=='/') tag.name[strlen(#tag.name)-1]=NULL; //for br/ !!!!!!!!
if (tag.params) tag.parse_params();
if (tag.name) {
CheckForLineBreak();
Paint();
if (tag.name) SetStyle();
}
break;
default:
_default:
AddCharToTheLine(ESBYTE[bufpos]);
}
}
Paint();
NewLine();
list.count = draw_y;
list.CheckDoesValuesOkey();
anchors.current = NULL;
custom_encoding = -1;
if (!header) {
strncpy(#header, #version, sizeof(TWebBrowser.header)-1);
DrawTitle(#header);
}
}
//============================================================================================
bool TWebBrowser::CheckForLineBreak()
{
int line_break_pos;
char new_line_text[4096];
//Do we need a line break?
if (strlen(#line)*zoom + stolbec < list.column_max) return false;
//Yes, we do. Lets calculate where...
line_break_pos = strrchr(#line, ' ');
//Is a new line fits in the current line?
if (line_break_pos*zoom + stolbec > list.column_max) {
line_break_pos = list.column_max/zoom - stolbec;
while(line_break_pos) && (line[line_break_pos]!=' ') line_break_pos--;
}
//Maybe a new line is too big for the whole new line? Then we have to split it
if (!line_break_pos) && (style.tag_list.level*5 + strlen(#line) * zoom >= list.column_max) {
line_break_pos = list.column_max/zoom - stolbec;
}
strcpy(#new_line_text, #line + line_break_pos);
line[line_break_pos] = 0x00;
Paint();
strcpy(#line, #new_line_text);
NewLine();
//while (CheckForLineBreak()==true) {};
return true;
}
//============================================================================================
void TWebBrowser::SetStyle() {
char img_path[4096]=0;
dword value;
if (value = tag.get_value_of("name=")) || (value = tag.get_value_of("id=")) {
anchors.add(value, draw_y);
if (anchors.current) && (streq(value, #anchors.current+1)) {
list.first = draw_y;
anchors.current = NULL;
}
}
if (tag.is("html")) {
t_html = tag.opened;
return;
}
if (tag.is("title")) {
style.tag_title = tag.opened;
if (!tag.opened) DrawTitle(#header);
return;
}
if (tag.is("body")) {
t_body = tag.opened;
if (value = tag.get_value_of("link=")) link_color_default = GetColor(value);
if (value = tag.get_value_of("alink=")) link_color_active = GetColor(value);
if (value = tag.get_value_of("text=")) text_colors.set(0, GetColor(value));
if (value = tag.get_value_of("bgcolor=")) {
style.bg_color = page_bg = GetColor(value);
DrawBuf.Fill(0, page_bg);
}
// Autodetecting encoding if no encoding was set
if (tag.opened) && (custom_encoding==-1) && (cur_encoding == CH_CP866) {
if (strstr(bufpointer, "\208\190")) ChangeEncoding(CH_UTF8);
else if (chrnum(bufpointer, '\246')>5) ChangeEncoding(CH_CP1251);
}
return;
}
if (tag.is("br")) { NewLine(); return; }
if (tag.is("b")) || (tag.is("strong")) || (tag.is("big")) || (tag.is("w:b")) {
style.b = tag.opened;
return;
}
if (tag.is("w:r")) && (!tag.opened) { style.b = false; return; }
if (tag.is("a")) {
if (tag.opened)
{
if (value = tag.get_value_of("href=")) && (!strstr(value,"javascript:"))
{
link = true;
links.add_link(value);
}
} else {
link = false;
style.bg_color = page_bg;
}
return;
}
if (tag.is("iframe")) && (value = tag.get_value_of("src=")) {
NewLine();
strcpy(#line, "IFRAME: ");
Paint();
link=true;
links.add_link(value);
strncpy(#line, value, sizeof(line)-1);
while (CheckForLineBreak()) {};
Paint();
link=false;
NewLine();
}
if (tag.is("font")) {
style.font = tag.opened;
style.bg_color = page_bg;
if (tag.opened)
{
if (value = tag.get_value_of("bg=")) style.bg_color = GetColor(value);
if (value = tag.get_value_of("color=")) {
text_colors.add(GetColor(value));
} else {
text_colors.add(text_colors.get_last());
}
}
else text_colors.pop();
return;
}
if (tag.is("div")) {
if (streq(#tag.prior,"div")) && (tag.opened) return;
if (!tag.opened) && (style.font) text_colors.pop();
NewLine();
return;
}
if (tag.is("header")) || (tag.is("article")) || (tag.is("footer")) || (tag.is("figure")) {
NewLine();
return;
}
if (tag.is("p")) || (tag.is("w:p")) {
IF (tag.prior[0] == 'h') || (streq(#tag.prior,"td")) || (streq(#tag.prior,"p")) return;
NewLine();
return;
}
if (tag.is("pre")) { style.pre = tag.opened; return; }
if (tag.is("td")) { if (tag.opened) AddCharToTheLine(' '); return; }
if (tag.is("tr")) { if (tag.opened) NewLine(); return; }
if (tag.is("button")) { style.button = tag.opened; stolbec++; return; }
if (tag.is("u")) || (tag.is("ins")) { style.u=tag.opened; return;}
if (tag.is("s")) || (tag.is("strike")) || (tag.is("del")) { style.s=tag.opened; return; }
if (tag.is("dl")) {
if (tag.opened) NewLine();
return;
}
if (tag.is("dd")) {
//NewLine();
//if (tag.opened) stolbec += 5; //stolbec overflow!
return;
}
if (tag.is("blockquote")) { style.blq = tag.opened; return; }
if (tag.is("code")) {
if (tag.opened) style.bg_color = 0xe4ffcb; else style.bg_color = page_bg;
style.pre = tag.opened; return;
}
if (tag.is("img")) {
if (value = tag.get_value_of("src=")) strlcpy(#img_path, value, sizeof(img_path)-1);
if (value = tag.get_value_of("title=")) && (strlen(value)<sizeof(line)-3) && (value) sprintf(#line, "[%s]", value);
if (value = tag.get_value_of("alt=")) && (strlen(value)<sizeof(line)-3) && (value) sprintf(#line, "[%s]", value);
if (!img_path) { line=0; return; }
style.image = true;
page_img.add(#img_path, stolbec+1*list.font_w+3, draw_y);
text_colors.add(0x9A6F29);
if (!line) {
if (!strncmp(#img_path, "data:", 5)) img_path=0;
replace_char(#img_path, '?', NULL, strlen(#img_path));
sprintf(#line, "[%s]", #img_path+strrchr(#img_path, '/'));
line[50]= NULL;
}
while (CheckForLineBreak()) {};
Paint();
text_colors.pop();
style.image = false;
return;
}
if (tag.is("h4")) {
NewLine();
NewLine();
style.h = tag.opened;
style.b = tag.opened;
}
if (tag.is("h1")) || (tag.is("h2")) || (tag.is("h3")) || (tag.is("caption")) {
style.h = tag.opened;
if (tag.opened) {
if (!style.pre) NewLine();
draw_y += 10;
zoom=2;
list.font_type |= 10011001b;
list.item_h = BASIC_LINE_H * 2 - 2;
if (tag.is("h1")) style.b = true;
} else {
if (tag.is("h1")) style.b = false;
NewLine();
zoom=1;
list.font_type = 10011000b;
list.item_h = BASIC_LINE_H;
}
return;
}
if (tag.is("dt")) {
style.tag_list.upd_level(tag.opened, DT);
if (tag.opened) NewLine();
return;
}
if (tag.is("ul")) {
style.tag_list.upd_level(tag.opened, UL);
if (!tag.opened) && (!style.pre) NewLine();
return;
}
if (tag.is("ol")) {
style.tag_list.upd_level(tag.opened, OL);
if (!tag.opened) && (!style.pre) NewLine();
return;
}
if (tag.is("li")) && (tag.opened)
{
if (!style.tag_list.level) style.tag_list.upd_level(1, UL);
if (!style.pre) NewLine();
if (style.tag_list.get_order_type() == UL) {
strcpy(#line, "\31 ");
stolbec = style.tag_list.level * 5 - 2;
}
if (style.tag_list.get_order_type() == OL) {
sprintf(#line, "%i. ", style.tag_list.inc_counter());
stolbec = style.tag_list.level * 5 - strlen(#line);
}
return;
}
if (tag.is("q"))
{
if (tag.opened) {
EAX = strlen(#line);
if (line[EAX-1] != ' ') chrcat(#line, ' ');
chrcat(#line, '\"');
}
if (!tag.opened) strcat(#line, "\" ");
return;
}
if (tag.is("hr")) {
if (value = tag.get_value_of("color=")) EDI = GetColor(value); else EDI = 0x999999;
$push edi;
NewLine();
$pop edi;
draw_y += 10;
DrawBuf.DrawBar(5, draw_y - 1, list.w-10, 1, EDI);
NewLine();
draw_y += 10;
return;
}
if (tag.is("meta")) {
if (streq(tag.get_value_of("http-equiv="), "refresh")) && (value = tag.get_value_of("content=")) {
if (value = strstri(value, "url=")) strcpy(#redirect, value);
}
}
if (custom_encoding == -1) && (tag.is("meta")) || (tag.is("?xml")) {
if (value = tag.get_value_of("charset=")) || (value = tag.get_value_of("content=")) || (value = tag.get_value_of("encoding="))
{
value += strrchr(value, '='); //search in content=
if (ESBYTE[value] == '"') value++;
strlwr(value);
if (streqrp(value,"utf-8")) || (streqrp(value,"utf8")) { ChangeEncoding(CH_UTF8); debugln("UTF"); }
else if (streqrp(value,"windows-1251")) || (streqrp(value,"windows1251")) ChangeEncoding(CH_CP1251);
else if (streqrp(value,"dos")) || (streqrp(value,"cp-866")) ChangeEncoding(CH_CP866);
else if (streqrp(value,"iso-8859-5")) || (streqrp(value,"iso8859-5")) ChangeEncoding(CH_ISO8859_5);
else if (streqrp(value,"koi8-r")) || (streqrp(value,"koi8-u")) ChangeEncoding(CH_KOI8);
}
return;
}
}
//============================================================================================
void TWebBrowser::DrawScroller()
{
scroll_wv.max_area = list.count;
scroll_wv.cur_area = list.visible;
scroll_wv.position = list.first;
scroll_wv.all_redraw = 0;
scroll_wv.start_x = list.x + list.w;
scroll_wv.start_y = list.y;
scroll_wv.size_y = list.h;
scrollbar_v_draw(#scroll_wv);
}
//============================================================================================
void TWebBrowser::ChangeEncoding(int _new_encoding)
{
if (cur_encoding == _new_encoding) return;
cur_encoding = _new_encoding;
bufpointer = ChangeCharset(cur_encoding, "CP866", bufpointer);
if (header) {
ChangeCharset(cur_encoding, "CP866", #header);
DrawTitle(#header);
}
}
//============================================================================================
void TWebBrowser::NewLine()
{
dword onleft, ontop;
static int empty_line=0;
if (!stolbec) && (draw_y==BODY_MARGIN) return;
if (style.tag_list.level) && (stolbec == style.tag_list.level * 5) {
if (empty_line<1) empty_line++;
else return;
} else if (!stolbec) {
if (empty_line<1) empty_line++;
else return;
} else {
empty_line=0;
}
onleft = list.x + BODY_MARGIN;
ontop = draw_y + list.y;
if (t_html) && (!t_body) return;
draw_y += list.item_h;
if (style.blq) stolbec = 6; else stolbec = 0;
stolbec += style.tag_list.level * 5;
if (debug_mode) debugln(NULL);
}
//============================================================================================
void TWebBrowser::DrawPage()
{
PutPaletteImage(list.first * DrawBuf.bufw * 4 + buf_data+8, DrawBuf.bufw, list.h, DrawBuf.bufx, DrawBuf.bufy, 32, 0);
page_img.draw(list.x, list.y, list.first, list.h);
DrawScroller();
}