コード例 #1
0
ファイル: doupdt.c プロジェクト: 8l/FUZIX
/* Output char with attribute */
static void Putchar(int ch)
{
  if ((_cursvar.cursrow < LINES) || (_cursvar.curscol < COLS)) {
	newattr(ch);
	putchar(ch);
  }
}
コード例 #2
0
ファイル: doupdt.c プロジェクト: 8l/FUZIX
static void clrupdate(WINDOW *scr)
{
  register int *src;
  register int *dst;
  register int i;
  register int j;
  WINDOW *w;

  w = curscr;

  if (scr != w) {		/* copy scr to curscr */
	for (i = 0; i < LINES; i++) {
		src = scr->_line[i];
		dst = w->_line[i];
		for (j = 0; j < COLS; j++) *dst++ = *src++;
	}			/* for */
  }				/* if */
  newattr(scr->_attrs);
  clrscr();
  scr->_clear = FALSE;
  for (i = 0; i < LINES; i++) {	/* update physical screen */
	src = w->_line[i];
	j = 0;
	while (j < COLS) {
		if (*src != (' ' | ATR_NRM)) {
			gotoxy(i, j);
			while (j < COLS && (*src != (' ' | ATR_NRM))) {
				Putchar(*src++);
				j++;
			}
		} else {
			src++;
			j++;
		}
	}			/* for */
  }				/* for */
  fflush(stdout);
}				/* clrupdate */
コード例 #3
0
ファイル: lex.c プロジェクト: AustenConrad/plan-9
// We've just seen a '<'.  Gather up stuff to closing '>' (if buffer
// ends before then, return -1).
// If it's a tag, look up the name, gather the attributes, and return
// the appropriate token.
// Else it's either just plain data or some kind of ignorable stuff:
// return Data or Comment as appropriate.
// If it's not a Comment, put it in a[*pai] and bump *pai.
static int
gettag(TokenSource* ts, int starti, Token* a, int* pai)
{
	int	rbra;
	int	ans;
	Attr*	al;
	int	nexti;
	int	c;
	int	ti;
	int	afnd;
	int	attid;
	int	quote;
	Rune*	val;
	int	nv;
	int	i;
	int	tag;
	Token*	tok;
	Rune	buf[BIGBUFSIZE];

	rbra = 0;
	nexti = ts->i;
	tok = &a[*pai];
	tok->tag = Notfound;
	tok->text = nil;
	tok->attr = nil;
	tok->starti = starti;
	c = getchar(ts);
	if(c == '/') {
		rbra = RBRA;
		c = getchar(ts);
	}
	if(c < 0)
		goto eob_done;
	if(c >= 256 || !isalpha(c)) {
		// not a tag
		if(c == '!') {
			ans = comment(ts);
			if(ans != -1)
				return ans;
			goto eob_done;
		}
		else {
			backup(ts, nexti);
			tok->tag = Data;
			tok->text = _Strdup(L"<");
			(*pai)++;
			return Data;
		}
	}
	// c starts a tagname
	buf[0] = c;
	i = 1;
	while(1) {
		c = getchar(ts);
		if(c < 0)
			goto eob_done;
		if(!ISNAMCHAR(c))
			break;
		// if name is bigger than buf it won't be found anyway...
		if(i < BIGBUFSIZE)
			buf[i++] = c;
	}
	if(_lookup(tagtable, Numtags, buf, i, &tag))
		tok->tag = tag + rbra;
	else
		tok->text = _Strndup(buf, i);	// for warning print, in build
	// attribute gathering loop
	al = nil;
	while(1) {
		// look for "ws name" or "ws name ws = ws val"  (ws=whitespace)
		// skip whitespace
attrloop_continue:
		while(c < 256 && isspace(c)) {
			c = getchar(ts);
			if(c < 0)
				goto eob_done;
		}
		if(c == '>')
			goto attrloop_done;
		if(c == '<') {
			if(warn)
				fprint(2, "warning: unclosed tag\n");
			ungetchar(ts, c);
			goto attrloop_done;
		}
		if(c >= 256 || !isalpha(c)) {
			if(warn)
				fprint(2, "warning: expected attribute name\n");
			// skipt to next attribute name
			while(1) {
				c = getchar(ts);
				if(c < 0)
					goto eob_done;
				if(c < 256 && isalpha(c))
					goto attrloop_continue;
				if(c == '<') {
					if(warn)
						fprint(2, "warning: unclosed tag\n");
					ungetchar(ts, 60);
					goto attrloop_done;
				}
				if(c == '>')
					goto attrloop_done;
			}
		}
		// gather attribute name
		buf[0] = c;
		i = 1;
		while(1) {
			c = getchar(ts);
			if(c < 0)
				goto eob_done;
			if(!ISNAMCHAR(c))
				break;
			if(i < BIGBUFSIZE-1)
				buf[i++] = c;
		}
		afnd = _lookup(attrtable, Numattrs, buf, i, &attid);
		if(warn && !afnd) {
			buf[i] = 0;
			fprint(2, "warning: unknown attribute name %S\n", buf);
		}
		// skip whitespace
		while(c < 256 && isspace(c)) {
			c = getchar(ts);
			if(c < 0)
				goto eob_done;
		}
		if(c != '=') {
			if(afnd)
				al = newattr(attid, nil, al);
			goto attrloop_continue;
		}
		//# c is '=' here;  skip whitespace
		while(1) {
			c = getchar(ts);
			if(c < 0)
				goto eob_done;
			if(c >= 256 || !isspace(c))
				break;
		}
		quote = 0;
		if(c == '\'' || c == '"') {
			quote = c;
			c = getchar(ts);
			if(c < 0)
				goto eob_done;
		}
		val = nil;
		nv = 0;
		while(1) {
valloop_continue:
			if(c < 0)
				goto eob_done;
			if(c == '>') {
				if(quote) {
					// c might be part of string (though not good style)
					// but if line ends before close quote, assume
					// there was an unmatched quote
					ti = ts->i;
					while(1) {
						c = getchar(ts);
						if(c < 0)
							goto eob_done;
						if(c == quote) {
							backup(ts, ti);
							buf[nv++] = '>';
							if(nv == BIGBUFSIZE-1) {
								val = buftostr(val, buf, nv);
								nv = 0;
							}
							c = getchar(ts);
							goto valloop_continue;
						}
						if(c == '\n') {
							if(warn)
								fprint(2, "warning: apparent unmatched quote\n");
							backup(ts, ti);
							c = '>';
							goto valloop_done;
						}
					}
				}
				else
					goto valloop_done;
			}
			if(quote) {
				if(c == quote) {
					c = getchar(ts);
					if(c < 0)
						goto eob_done;
					goto valloop_done;
				}
				if(c == '\r') {
					c = getchar(ts);
					goto valloop_continue;
				}
				if(c == '\t' || c == '\n')
					c = ' ';
			}
			else {
				if(c < 256 && isspace(c))
					goto valloop_done;
			}
			if(c == '&') {
				c = ampersand(ts);
				if(c == -1)
					goto eob_done;
			}
			buf[nv++] = c;
			if(nv == BIGBUFSIZE-1) {
				val = buftostr(val, buf, nv);
				nv = 0;
			}
			c = getchar(ts);
		}
valloop_done:
		if(afnd) {
			val = buftostr(val, buf, nv);
			al = newattr(attid, val, al);
		}
	}

attrloop_done:
	tok->attr = al;
	(*pai)++;
	return tok->tag;

eob_done:
	if(warn)
		fprint(2, "warning: incomplete tag at end of page\n");
	backup(ts, nexti);
	tok->tag = Data;
	tok->text = _Strdup(L"<");
	return Data;
}