diff options
Diffstat (limited to 'miscutils')
| -rw-r--r-- | miscutils/conspy.c | 123 |
1 files changed, 63 insertions, 60 deletions
diff --git a/miscutils/conspy.c b/miscutils/conspy.c index 11105f0..6f2f025 100644 --- a/miscutils/conspy.c +++ b/miscutils/conspy.c @@ -56,31 +56,33 @@ struct globals { int size; int x, y; int kbd_fd; - unsigned width; - unsigned height; - unsigned col; - unsigned line; + int vcsa_fd; int ioerror_count; int key_count; int escape_count; int nokeys; int current; - int vcsa_fd; - uint16_t last_attr; - uint8_t last_bold; - uint8_t last_blink; - uint8_t last_fg; - uint8_t last_bg; - char attrbuf[sizeof("\033[0;1;5;30;40m")]; + // cached local tty parameters + unsigned width; + unsigned height; + unsigned col; + unsigned line; smallint curoff; + uint8_t last_attr; + uint8_t force_attr_change; + char attrbuf[sizeof("\033[0;1;5;30;40m")]; + // remote console struct screen_info remote; + // saved local tty terminfo struct termios term_orig; }; #define G (*ptr_to_globals) #define INIT_G() do { \ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ - strcpy((char*)&G.last_attr, "\xff\xff\xff\xff\xff\xff" "\033["); \ + G.attrbuf[0] = '\033'; \ + G.attrbuf[1] = '['; \ + G.force_attr_change = 0xff; \ } while (0) enum { @@ -100,7 +102,6 @@ static void screen_read_close(void) char *data = G.data + G.current; xread(G.vcsa_fd, data, G.size); - G.last_attr = 0; for (i = 0; i < G.remote.lines; i++) { for (j = 0; j < G.remote.cols; j++, NEXT(data)) { unsigned x = j - G.x; // if will catch j < G.x too @@ -117,9 +118,12 @@ static void screen_read_close(void) static void screen_char(char *data) { - uint8_t attr = ATTR(data); + if (!BW) { + uint8_t attr = ATTR(data); + //uint8_t attr = ATTR(data) >> 1; // for framebuffer console + uint8_t attr_diff = (G.last_attr ^ attr) | G.force_attr_change; - if (!BW && G.last_attr != attr) { + if (attr_diff) { // Attribute layout for VGA compatible text videobuffer: // blinking text // |red bkgd @@ -143,51 +147,49 @@ static void screen_char(char *data) // green text // blue text // text 8th bit - // converting RGB color bit triad to BGR: - static const char color[8] = "04261537"; - char *ptr; - uint8_t fg, bold, bg, blink; - - G.last_attr = attr; - - //attr >>= 1; // for framebuffer console - ptr = G.attrbuf + sizeof("\033[")-1; - fg = (attr & 0x07); - bold = (attr & 0x08); - bg = (attr & 0x70); - blink = (attr & 0x80); - if (G.last_bold > bold || G.last_blink > blink) { - G.last_bold = G.last_blink = 0; - G.last_bg = 0xff; - *ptr++ = '0'; - *ptr++ = ';'; - } - if (G.last_bold != bold) { - G.last_bold = bold; - *ptr++ = '1'; - *ptr++ = ';'; - } - if (G.last_blink != blink) { - G.last_blink = blink; - *ptr++ = '5'; - *ptr++ = ';'; - } - if (G.last_fg != fg) { - G.last_fg = fg; - *ptr++ = '3'; - *ptr++ = color[fg]; - *ptr++ = ';'; - } - if (G.last_bg != bg) { - G.last_bg = bg; - *ptr++ = '4'; - *ptr++ = color[bg >> 4]; - *ptr++ = ';'; - } - if (ptr != G.attrbuf + sizeof("\033[")-1) { - ptr[-1] = 'm'; - *ptr = '\0'; - fputs(G.attrbuf, stdout); + // converting RGB color bit triad to BGR: + static const char color[8] = "04261537"; + const uint8_t fg_mask = 0x07, bold_mask = 0x08; + const uint8_t bg_mask = 0x70, blink_mask = 0x80; + char *ptr; + + ptr = G.attrbuf + 2; /* skip "ESC [" */ + + // (G.last_attr & ~attr) has 1 only where + // G.last_attr has 1 but attr has 0. + // Here we check whether we have transition + // bold->non-bold or blink->non-blink: + if ((G.last_attr & ~attr) & (bold_mask | blink_mask)) { + *ptr++ = '0'; // "reset all attrs" + *ptr++ = ';'; + // must set fg & bg, maybe need to set bold or blink: + attr_diff = attr | ~(bold_mask | blink_mask); + } + G.force_attr_change = 0; + G.last_attr = attr; + if (attr_diff & bold_mask) { + *ptr++ = '1'; + *ptr++ = ';'; + } + if (attr_diff & blink_mask) { + *ptr++ = '5'; + *ptr++ = ';'; + } + if (attr_diff & fg_mask) { + *ptr++ = '3'; + *ptr++ = color[attr & fg_mask]; + *ptr++ = ';'; + } + if (attr_diff & bg_mask) { + *ptr++ = '4'; + *ptr++ = color[(attr & bg_mask) >> 4]; + *ptr++ = ';'; + } + if (ptr != G.attrbuf + 2) { + ptr[-1] = 'm'; + *ptr = '\0'; + fputs(G.attrbuf, stdout); + } } } putchar(CHAR(data)); @@ -402,6 +404,7 @@ int conspy_main(int argc UNUSED_PARAM, char **argv) termbuf.c_cc[VMIN] = 1; termbuf.c_cc[VTIME] = 0; tcsetattr(G.kbd_fd, TCSANOW, &termbuf); + poll_timeout_ms = 250; while (1) { struct pollfd pfd; |