radare2/libr/cons/grep.c

/* radare - LGPL - Copyright 2009-2018 - pancake, nibble */

#include <r_cons.h>
#include <r_util.h>
#include <r_print.h>
#include <sdb.h>
#undef SDB_API
#define SDB_API static
#include "../../shlr/sdb/src/json/rangstr.c"
int js0n(const ut8 *js, RangstrType len, RangstrType *out);
#include "../../shlr/sdb/src/json/path.c"

#define I(x) r_cons_singleton ()->x

static char *strchr_ns (char *s, const char ch) {
	char *p = strchr (s, ch);
	if (p && p > s) {
		char *prev = p - 1;
		if (*prev == '\\') {
			memmove (prev, p, strlen (p) + 1);
			return strchr_ns (p, ch);
		}
	}
	return p;
}

static const char *help_detail_tilde[] = {
	"Usage: [command]~[modifier][word,word][endmodifier][[column]][:line]\n"
	"modifier:", "", "",
	" &",        "", "all words must match to grep the line",
	" $[n]",     "", "sort numerically / alphabetically the Nth column",
	" $!",       "", "sort in inverse order",
	" +",        "", "case insensitive grep (grep -i)",
	" ^",        "", "words must be placed at the beginning of line",
	" !",        "", "negate grep",
	" ?",        "", "count number of matching lines",
	" ?.",       "", "count number chars",
	" ??",       "", "show this help message",
	" :[s]-[e]", "", "show lines s-e",
	" ..",       "", "internal 'less'",
	" ...",      "", "internal 'hud' (like V_)",
	" {}",       "", "json indentation",
	" {path}",   "", "json grep",
	" {}..",     "", "less json indentation",
	"endmodifier:", "", "",
	" $",        "", "words must be placed at the end of line",
	"column:", "", "",
	" [n]",      "", "show only column n",
	" [n-m]",    "", "show column n to m",
	" [n-]",     "", "show all columns starting from column n",
	" [i,j,k]",  "", "show the columns i, j and k",
	"Examples:", "", "",
	" i~:0",     "", "show first line of 'i' output",
	" i~:-2",    "", "show first three lines of 'i' output",
	" pd~mov",   "", "disasm and grep for mov",
	" pi~[0]",   "", "show only opcode",
	" i~0x400$", "", "show lines ending with 0x400",
	NULL
};

/* TODO: remove globals */
static RList *sorted_lines = NULL;
static RList *unsorted_lines = NULL;
static int sorted_column = -1;

R_API void r_cons_grep_help(void) {
	r_cons_cmd_help (help_detail_tilde, true);
}

#define R_CONS_GREP_BUFSIZE 4096

static void parse_grep_expression(const char *str) {
	static char buf[R_CONS_GREP_BUFSIZE];
	int wlen, len, is_range, num_is_parsed, fail = 0;
	char *ptr, *optr, *ptr2, *ptr3;
	ut64 range_begin, range_end;
	RCons *cons;

	if (!str || !*str) {
		return;
	}
	cons = r_cons_singleton ();
	memset (&(cons->grep), 0, sizeof (cons->grep));
	sorted_column = 0;
	cons->grep.sort = -1;
	cons->grep.line = -1;
	bool first = true;
	while (*str) {
		switch (*str) {
		case '.':
			if (str[1] == '.') {
				if (str[2] == '.') {
					cons->grep.less = 2;
				} else {
					cons->grep.less = 1;
				}
				return;
			}
			str++;
			break;
		case '{':
			if (str[1] == '}') {
				cons->grep.json = 1;
				if (!strncmp (str, "{}..", 4)) {
					cons->grep.less = 1;
				}
			} else {
				char *jsonPath = strdup (str + 1);
				char *jsonPathEnd = strchr (jsonPath, '}');
				if (jsonPathEnd) {
					*jsonPathEnd = 0;
					free (cons->grep.json_path);
					cons->grep.json_path = jsonPath;
					cons->grep.json = 1;
				} else {
					free (jsonPath);
				}
				return;
			}
			str++;
			break;
		case '$':
			str++;
			if (*str == '!') {
				cons->grep.sort_invert = true;
				str++;
			} else {
				cons->grep.sort_invert = false;
			}
			cons->grep.sort = atoi (str);
			while (IS_DIGIT (*str)) {
				str++;
			}
			if (*str == ':') {
				cons->grep.sort_row = atoi (++str);
				str++;
			}
			break;
		case '&':
			str++;
			cons->grep.amp = 1;
			break;
		case '+':
			if (first) {
				str++;
				cons->grep.icase = 1;
			}
			break;
		case '^':
			str++;
			cons->grep.begin = 1;
			break;
		case '!':
			str++;
			cons->grep.neg = 1;
			break;
		case '?':
			str++;
			cons->grep.counter = 1;
			if (*str == '.') {
				cons->grep.charCounter = true;
				str++;
			} else if (*str == '?') {
				cons->filter = true;
				r_cons_grep_help ();
				return;
			}
			break;
		default:
			goto while_end;
		}
		first = false;
	}
while_end:

	len = strlen (str) - 1;
	if (len > R_CONS_GREP_BUFSIZE - 1) {
		eprintf ("r_cons_grep: too long!\n");
		return;
	}
	if (len > 0 && str[len] == '?') {
		cons->grep.counter = 1;
		strncpy (buf, str, R_MIN (len, sizeof (buf) - 1));
		buf[len] = 0;
		len--;
	} else {
		strncpy (buf, str, sizeof (buf) - 1);
	}

	if (len > 1 && buf[len] == '$' && buf[len - 1] != '\\') {
		cons->grep.end = 1;
		buf[len] = 0;
	}

	ptr = buf;
	ptr2 = strchr (ptr, '[');
	ptr3 = strchr (ptr, ']');
	is_range = 0;
	num_is_parsed = 0;
	fail = 0;
	range_begin = range_end = -1;

	if (ptr2 && ptr3) {
		ptr2[0] = '\0';
		ptr2++;
		for (; ptr2 <= ptr3; ++ptr2) {
			if (fail) {
				ZERO_FILL (cons->grep.tokens);
				cons->grep.tokens_used = 0;
				fail = 0;
				break;
			}
			switch (*ptr2) {
			case '-':
				is_range = 1;
				num_is_parsed = 0;
				range_end = -1;
				break;
			case ']':  // fallthrough to handle ']' like ','
			case ',':
				for (; range_begin <= range_end; range_begin++) {
					if (range_begin >= R_CONS_GREP_TOKENS) {
						fail = 1;
						break;
					}
					cons->grep.tokens[range_begin] = 1;
					cons->grep.tokens_used = 1;
				}
				// case of [n-]
				if (*ptr2 == ']' && is_range && !num_is_parsed) {
					num_is_parsed = 1;
					range_end = -1;
				} else {
					is_range = 0;
					num_is_parsed = 0;
				}
				break;
			default:
				if (!num_is_parsed) {
					if (is_range) {
						range_end = r_num_get (cons->num, ptr2);
						// check for bad value, if range_end == 0, we check if ptr2 == '0'
						if (range_end == 0 && *ptr != '0') {
							range_end = -1; // this allow [n- ]
						}
					} else {
						range_begin = range_end = r_num_get (cons->num, ptr2);
					}
					num_is_parsed = 1;
				}
			}
		}
	}

	ptr2 = strchr_ns (ptr, ':'); // line number
	cons->grep.range_line = 2; // there is not :
	if (ptr2 && ptr2[1] != ':' && ptr2[1]) {
		*ptr2 = '\0';
		char *p, *token = ptr + 1;
		p = strstr (token, "..");
		if (!p) {
			cons->grep.line = r_num_get (cons->num, ptr2 + 1);
			cons->grep.range_line = 0;
		} else {
			*p = '\0';
			cons->grep.range_line = 1;
			if (*token) {
				cons->grep.f_line = r_num_get (cons->num, token);
			} else {
				cons->grep.f_line = 0;
			}
			if (p[2]) {
				cons->grep.l_line = r_num_get (cons->num, p + 2);
			} else {
				cons->grep.l_line = -1;
			}
		}
	}
	free (cons->grep.str);
	if (*ptr) {
		cons->grep.str = (char *) strdup (ptr);
		do {
			optr = ptr;
			ptr = strchr (ptr, ','); // grep keywords
			if (ptr) {
				*ptr++ = '\0';
			}
			wlen = strlen (optr);
			if (!wlen) {
				continue;
			}
			if (wlen >= R_CONS_GREP_WORD_SIZE - 1) {
				eprintf ("grep string too long\n");
				continue;
			}
			strncpy (cons->grep.strings[cons->grep.nstrings],
				optr, R_CONS_GREP_WORD_SIZE - 1);
			cons->grep.nstrings++;
			if (cons->grep.nstrings > R_CONS_GREP_WORDS - 1) {
				eprintf ("too many grep strings\n");
				break;
			}
		} while (ptr);
	} else {
		cons->grep.str = strdup (ptr);
		cons->grep.nstrings++;
		cons->grep.strings[0][0] = 0;
	}
}

// Finds and returns next intgerp expression,
// unescapes escaped twiddles
static char *find_next_intgrep(char *cmd, const char *quotes) {
	char *p;
	do {
		p = (char *)r_str_firstbut (cmd, '~', quotes);
		if (!p) {
			break;
		}
		if (p == cmd || *(p - 1) != '\\') {
			return (char*)p;
		}
		//twiddle unescape
		memmove (p - 1, p, strlen(p) + 1);
		cmd = p + 1;
	} while (*cmd);
	return NULL;
}

/*
 * Removes grep part from *cmd* and returns newly allocated string
 * with reshaped grep expression.
 *
 * Function converts multiple twiddle expressions into internal representation.
 * For example:
 * converts "~str1~str2~str3~?" into "?&str1,str2,str3"
 */
static char *preprocess_filter_expr(char *cmd, const char *quotes) {
	char *p1, *p2, *ns = NULL;
	const char *strsep = "&";
	int len;
	int i;

	p1 = find_next_intgrep (cmd, quotes);
	if (!p1) {
		return NULL;
	}

	len = strlen (p1);
	if (len > 4 && r_str_endswith (p1, "~?") && p1[len - 3] != '\\') {
		p1[len - 2] = '\0';
		ns = r_str_append (ns, "?");
	}

	*p1 = '\0'; // remove grep part from cmd

	i = 0;
	// parse words between '~'
	while ((p2 = find_next_intgrep (p1 + 1, quotes))) {
		ns = r_str_append (ns, strsep);
		ns = r_str_appendlen (ns, p1 + 1, (int)(p2 - p1 - 1));
		p1 = p2;
		strsep = ",";
		i++;
	}

	if (i > 0) {
		ns = r_str_append (ns, ",");
	}

	ns = r_str_append (ns, p1 + 1);

	return ns;
}

R_API void r_cons_grep_parsecmd(char *cmd, const char *quotestr) {
	char *ptr;

	if (!cmd) {
		return;
	}

	ptr = preprocess_filter_expr (cmd, quotestr);

	if (ptr) {
		r_str_trim (cmd);
		parse_grep_expression (ptr);
		free (ptr);
	}
}

R_API char * r_cons_grep_strip(char *cmd, const char *quotestr) {
	char *ptr = NULL;

	if (cmd) {
		ptr = preprocess_filter_expr (cmd, quotestr);
		r_str_trim (cmd);
	}
	return ptr;
}

R_API void r_cons_grep_process(char * grep) {
	if (grep) {
		parse_grep_expression (grep);
		free (grep);
	}
}

static int cmp(const void *a, const void *b) {
	char *da = NULL;
	char *db = NULL;
	const char *ca = r_str_trim_ro (a);
	const char *cb = r_str_trim_ro (b);
	if (!a || !b) {
		return (int) (size_t) ((char*) a - (char*) b);
	}
	if (sorted_column > 0) {
		da = strdup (ca);
		db = strdup (cb);
		int colsa = r_str_word_set0 (da);
		int colsb = r_str_word_set0 (db);
		ca = (colsa > sorted_column)? r_str_word_get0 (da, sorted_column): "";
		cb = (colsb > sorted_column)? r_str_word_get0 (db, sorted_column): "";
	}
	if (IS_DIGIT (*ca) && IS_DIGIT (*cb)) {
		ut64 na = r_num_get (NULL, ca);
		ut64 nb = r_num_get (NULL, cb);
		int ret = na > nb;
		free (da);
		free (db);
		return ret;
	}
	if (da && db) {
		int ret = strcmp (ca, cb);
		free (da);
		free (db);
		return ret;
	}
	free (da);
	free (db);
	return strcmp (a, b);
}

R_API int r_cons_grepbuf(char *buf, int len) {
	RCons *cons = r_cons_singleton ();
	char *tline, *tbuf, *p, *out, *in = buf;
	int ret, total_lines = 0, buffer_len = 0, l = 0, tl = 0;
	bool show = false;
	if (cons->filter) {
		cons->buffer_len = 0;
		R_FREE (cons->buffer);
		return 0;
	}

	if ((!len || !buf || buf[0] == '\0') &&
	    (cons->grep.json || cons->grep.less)) {
		cons->grep.json = 0;
		cons->grep.less = 0;
		return 0;
	}
	if (cons->grep.json) {
		if (cons->grep.json_path) {
			Rangstr rs = json_get (cons->buffer, cons->grep.json_path);
			char *u = rangstr_dup (&rs);
			if (u) {
				cons->buffer = u;
				cons->buffer_len = strlen (u);
				cons->buffer_sz = cons->buffer_len + 1;
				cons->grep.json = 0;
				r_cons_newline ();
			}
			R_FREE (cons->grep.json_path);
		} else {
			const char *palette[] = {
				cons->pal.graph_false, // f
				cons->pal.graph_true, // t
				cons->pal.num, // k
				cons->pal.comment, // v
				Color_RESET,
				NULL
			};
			char *out = r_print_json_indent (buf, I (color), "  ", palette);
			if (!out) {
				return 0;
			}
			free (cons->buffer);
			cons->buffer = out;
			cons->buffer_len = strlen (out);
			cons->buffer_sz = cons->buffer_len + 1;
			cons->grep.json = 0;
			if (cons->grep.less) {
				cons->grep.less = 0;
				r_cons_less_str (cons->buffer, NULL);
			}
		}
		return 3;
	}
	if (cons->grep.less) {
		int less = cons->grep.less;
		cons->grep.less = 0;
		if (less == 2) {
			char *res = r_cons_hud_string (buf);
			r_cons_println (res);
			free (res);
		} else {
			r_cons_less_str (buf, NULL);
			buf[0] = 0;
			cons->buffer_len = 0;
			if (cons->buffer) {
				cons->buffer[0] = 0;
			}
			R_FREE (cons->buffer);
		}
		return 0;
	}
	if (!cons->buffer) {
		cons->buffer_len = len + 20;
		cons->buffer = malloc (cons->buffer_len);
		cons->buffer[0] = 0;
	}
	out = tbuf = calloc (1, len);
	if (!out) {
		return 0;
	}
	tline = malloc (len);
	if (!tline) {
		free (out);
		return 0;
	}
	cons->lines = 0;
	// used to count lines and change negative grep.line values
	while ((int) (size_t) (in - buf) < len) {
		p = strchr (in, '\n');
		if (!p) {
			break;
		}
		l = p - in;
		if (l > 0) {
			in += l + 1;
		} else {
			in++;
		}
		total_lines++;
	}
	if (!cons->grep.range_line && cons->grep.line < 0) {
		cons->grep.line = total_lines + cons->grep.line;
	}
	if (cons->grep.range_line == 1) {
		if (cons->grep.f_line < 0) {
			cons->grep.f_line = total_lines + cons->grep.f_line;
		}
		if (cons->grep.l_line < 0) {
			cons->grep.l_line = total_lines + cons->grep.l_line;
		}
	}
	in = buf;
	while ((int) (size_t) (in - buf) < len) {
		p = strchr (in, '\n');
		if (!p) {
			free (tbuf);
			free (tline);
			return 0;
		}
		l = p - in;
		if (l > 0) {
			memcpy (tline, in, l);
			if (cons->grep_color) {
				tl = l;
			} else {
				tl = r_str_ansi_filter (tline, NULL, NULL, l);
			}
			if (tl < 0) {
				ret = -1;
			} else {
				ret = r_cons_grep_line (tline, tl);
				if (!cons->grep.range_line) {
					if (cons->grep.line == cons->lines) {
						show = true;
					}
				} else if (cons->grep.range_line == 1) {
					if (cons->grep.f_line == cons->lines) {
						show = true;
					}
					if (cons->grep.l_line == cons->lines) {
						show = false;
					}
				} else {
					show = true;
				}
			}
			if (ret > 0) {
				if (show) {
					memcpy (out, tline, ret);
					memcpy (out + ret, "\n", 1);
					out += ret + 1;
					buffer_len += ret + 1;
				}
				if (!cons->grep.range_line) {
					show = false;
				}
				cons->lines++;
			} else if (ret < 0) {
				free (tbuf);
				free (tline);
				return 0;
			}
			in += l + 1;
		} else {
			in++;
		}
	}
	memcpy (buf, tbuf, len);
	cons->buffer_len = buffer_len;
	free (tbuf);
	free (tline);
	if (cons->grep.counter) {
		int cnt = cons->grep.charCounter? strlen (cons->buffer): cons->lines;
		if (cons->buffer_len < 10) {
			cons->buffer_len = 10; // HACK
		}
		snprintf (cons->buffer, cons->buffer_len, "%d\n", cnt);
		cons->buffer_len = strlen (cons->buffer);
		cons->num->value = cons->lines;
	}
	if (cons->grep.sort != -1) {
#define INSERT_LINES(list)\
	do {\
		r_list_foreach (list, iter, str) {\
			int len = strlen (str);\
			memcpy (ptr, str, len);\
			memcpy (ptr + len, "\n", 2);\
			ptr += len + 1;\
			nl++;\
		}\
	}\
	while (false)

		RListIter *iter;
		int nl = 0;
		char *ptr = cons->buffer;
		char *str;
		sorted_column = cons->grep.sort;
		r_list_sort (sorted_lines, cmp);
		if (cons->grep.sort_invert) {
			r_list_reverse (sorted_lines);
		}
		INSERT_LINES (unsorted_lines);
		INSERT_LINES (sorted_lines);
		cons->lines = nl;
		r_list_free (sorted_lines);
		sorted_lines = NULL;
		r_list_free (unsorted_lines);
		unsorted_lines = NULL;
	}
	return cons->lines;
}

R_API int r_cons_grep_line(char *buf, int len) {
	RCons *cons = r_cons_singleton ();
	const char *delims = " |,;=\t";
	char *in, *out, *tok = NULL;
	int hit = cons->grep.neg;
	int outlen = 0;
	bool use_tok = false;
	size_t i;

	in = calloc (1, len + 1);
	if (!in) {
		return 0;
	}
	out = calloc (1, len + 2);
	if (!out) {
		free (in);
		return 0;
	}
	memcpy (in, buf, len);

	if (cons->grep.nstrings > 0) {
		int ampfail = cons->grep.amp;
		if (cons->grep.icase) {
			r_str_case (in, false);
		}
		for (i = 0; i < cons->grep.nstrings; i++) {
			char *str = cons->grep.strings[i];
			if (cons->grep.icase) {
				r_str_case (str, false);
			}
			char *p = strstr (in, cons->grep.strings[i]);
			if (!p) {
				ampfail = 0;
				continue;
			}
			if (cons->grep.begin) {
				hit = (p == in)? 1: 0;
			} else {
				hit = !cons->grep.neg;
			}
			// TODO: optimize without strlen without breaking t/feat_grep (grep end)
			if (cons->grep.end && (strlen (cons->grep.strings[i]) != strlen (p))) {
				hit = 0;
			}
			if (!cons->grep.amp) {
				break;
			}
		}
		if (cons->grep.amp) {
			hit = ampfail;
		}
	} else {
		hit = 1;
	}

	if (hit) {
		if (!cons->grep.range_line) {
			if (cons->grep.line == cons->lines) {
				use_tok = true;
			}
		} else if (cons->grep.range_line == 1) {
			if (cons->grep.f_line == cons->lines) {
				use_tok = true;
			}
			if (cons->grep.l_line == cons->lines) {
				use_tok = false;
			}
		} else {
			use_tok = true;
		}
		if (use_tok && cons->grep.tokens_used) {
			for (i = 0; i < R_CONS_GREP_TOKENS; i++) {
				tok = strtok (i? NULL: in, delims);

				if (tok) {
					if (cons->grep.tokens[i]) {
						int toklen = strlen (tok);
						memcpy (out + outlen, tok, toklen);
						memcpy (out + outlen + toklen, " ", 2);
						outlen += toklen + 1;
						if (!(*out)) {
							free (in);
							free (out);
							return -1;
						}
					}
				} else {
					if (!(*out)) {
						free (in);
						free (out);
						return 0;
					} else {
						break;
					}
				}
			}

			outlen = outlen > 0? outlen - 1: 0;
			if (outlen > len) { // should never happen
				eprintf ("r_cons_grep_line: wtf, how you reach this?\n");
				free (in);
				free (out);
				return -1;
			}

			memcpy (buf, out, len);
			len = outlen;
		}
	} else {
		len = 0;
	}
	free (in);
	free (out);
	if (cons->grep.sort != -1) {
		char ch = buf[len];
		buf[len] = 0;
		if (!sorted_lines) {
			sorted_lines = r_list_newf (free);
		}
		if (!unsorted_lines) {
			unsorted_lines = r_list_newf (free);
		}
		if (cons->lines > cons->grep.sort_row) {
			r_list_append (sorted_lines, strdup (buf));
		} else {
			r_list_append (unsorted_lines, strdup (buf));
		}
		buf[len] = ch;
	}

	return len;
}

static const char *gethtmlrgb(const char *str) {
	static char buf[32];
	ut8 r, g, b;
	r = g = b = 0;
	r_cons_rgb_parse (str, &r, &g, &b, 0);
	sprintf (buf, "#%02x%02x%02x", r, g, b);
	return buf;
}

static const char *gethtmlcolor(const char ptrch, const char *def) {
	switch (ptrch) {
	case '0': return "#000"; // BLACK
	case '1': return "#f00"; // RED
	case '2': return "#0f0"; // GREEN
	case '3': return "#ff0"; // YELLOW
	case '4': return "#00f"; // BLUE
	case '5': return "#f0f"; // MAGENTA
	case '6': return "#aaf"; // TURQOISE
	case '7': return "#fff"; // WHITE
	case '8': return "#777"; // GREY
	case '9': break; // ???
	}
	return def;
}

// TODO: move into r_util/str
R_API char *r_cons_html_filter(const char *ptr, int *newlen) {
	const char *str = ptr;
	int esc = 0;
	int len = 0;
	int inv = 0;
	int tmp;
	bool tag_font = false;
	if (!ptr) {
		return NULL;
	}
	RStrBuf *res = r_strbuf_new ("");
	if (!res) {
		return NULL;
	}
	for (; ptr[0]; ptr = ptr + 1) {
		if (ptr[0] == '\n') {
			tmp = (int) (size_t) (ptr - str);
			r_strbuf_append_n (res, str, tmp);
			if (!ptr[1]) {
				// write new line if it's the end of the output
				r_strbuf_append (res, "\n");
			} else {
				r_strbuf_append (res, "<br />");
			}
			str = ptr + 1;
			continue;
		} else if (ptr[0] == '<') {
			tmp = (int) (size_t) (ptr - str);
			r_strbuf_append_n (res, str, tmp);
			r_strbuf_append (res, "&lt;");
			str = ptr + 1;
			continue;
		} else if (ptr[0] == '>') {
			tmp = (int) (size_t) (ptr - str);
			r_strbuf_append_n (res, str, tmp);
			r_strbuf_append (res, "&gt;");
			str = ptr + 1;
			continue;
		} else if (ptr[0] == ' ') {
			tmp = (int) (size_t) (ptr - str);
			r_strbuf_append_n (res, str, tmp);
			r_strbuf_append (res, "&nbsp;");
			str = ptr + 1;
			continue;
		}
		if (ptr[0] == 0x1b) {
			esc = 1;
			tmp = (int) (size_t) (ptr - str);
			r_strbuf_append_n (res, str, tmp);
			if (tag_font) {
				r_strbuf_append (res, "</font>");
				tag_font = false;
			}
			str = ptr + 1;
			continue;
		}
		if (esc == 1) {
			// \x1b[2J
			if (ptr[0] != '[') {
				eprintf ("Oops invalid escape char\n");
				esc = 0;
				str = ptr + 1;
				continue;
			}
			esc = 2;
			continue;
		} else if (esc == 2) {
			// TODO: use dword comparison here
			if (ptr[0] == '2' && ptr[1] == 'J') {
				r_strbuf_append (res, "<hr />");
				ptr++;
				esc = 0;
				str = ptr;
				continue;
			} else if (!strncmp (ptr, "48;5;", 5) || !strncmp (ptr, "48;2;", 5)) {
				char *end = strchr (ptr, 'm');
				r_strbuf_appendf (res, "<font style='background-color:%s'>", gethtmlrgb (ptr));
				tag_font = true;
				ptr = end;
				str = ptr + 1;
				esc = 0;
			} else if (!strncmp (ptr, "38;5;", 5) || !strncmp (ptr, "38;2;", 5)) {
				char *end = strchr (ptr, 'm');
				r_strbuf_appendf (res, "<font color='%s'>", gethtmlrgb (ptr));
				tag_font = true;
				ptr = end;
				str = ptr + 1;
				esc = 0;
			} else if (ptr[0] == '0' && ptr[1] == ';' && ptr[2] == '0') {
				// wtf ?
				r_cons_gotoxy (0, 0);
				ptr += 4;
				esc = 0;
				str = ptr;
				continue;
			} else if (ptr[0] == '0' && ptr[1] == 'm') {
				str = (++ptr) + 1;
				esc = inv = 0;
				continue;
				// reset color
			} else if (ptr[0] == '7' && ptr[1] == 'm') {
				str = (++ptr) + 1;
				inv = 128;
				esc = 0;
				continue;
				// reset color
			} else if (ptr[0] == '3' && ptr[2] == 'm') {
				r_strbuf_appendf (res, "<font color='%s'>", gethtmlcolor (ptr[1], inv? "#fff": "#000"));
				tag_font = true;
				ptr = ptr + 1;
				str = ptr + 2;
				esc = 0;
				continue;
			} else if (ptr[0] == '4' && ptr[2] == 'm') {
				r_strbuf_appendf (res, "<font style='background-color:%s'>",
					gethtmlcolor (ptr[1], inv? "#000": "#fff"));
				tag_font = true;
				ptr = ptr + 1;
				str = ptr + 2;
				esc = 0;
				continue;
			}
		}
		len++;
	}
	if (tag_font) {
		r_strbuf_append (res, "</font>");
		tag_font = false;
	}
	r_strbuf_append_n (res, str, ptr - str);
	if (newlen) {
		*newlen = res->len;
	}
	return r_strbuf_drain (res);
}