diff options
Diffstat (limited to 'libterm/term.c')
| -rw-r--r-- | libterm/term.c | 233 |
1 files changed, 216 insertions, 17 deletions
diff --git a/libterm/term.c b/libterm/term.c index 5d2a44f..9a4e231 100644 --- a/libterm/term.c +++ b/libterm/term.c @@ -1,54 +1,253 @@ #include "term.h" -int term_init_data( term_screen *term ) +#include "debug.h" + +enum KEY_ACTION{ + KEY_NULL = 0, /* NULL */ + CTRL_A = 1, /* Ctrl+a */ + CTRL_B = 2, /* Ctrl-b */ + CTRL_C = 3, /* Ctrl-c */ + CTRL_D = 4, /* Ctrl-d */ + CTRL_E = 5, /* Ctrl-e */ + CTRL_F = 6, /* Ctrl-f */ + CTRL_H = 8, /* Ctrl-h */ + TAB = 9, /* Tab */ + CTRL_K = 11, /* Ctrl+k */ + CTRL_L = 12, /* Ctrl+l */ + ENTER = 13, /* Enter */ + CTRL_N = 14, /* Ctrl-n */ + CTRL_P = 16, /* Ctrl-p */ + CTRL_T = 20, /* Ctrl-t */ + CTRL_U = 21, /* Ctrl+u */ + CTRL_W = 23, /* Ctrl+w */ + ESC = 27, /* Escape */ + BACKSPACE = 127 /* Backspace */ +}; + +#define T_ESC "\x1b" + +int term_init( term_screen *term ) { int ret=0; - term->term_col = term_get_col(); + if ( !isatty(STDIN_FILENO) ) goto exit_error; + //!!!!!! + //register atexit + + term->ifd = STDIN_FILENO; + term->ofd = STDOUT_FILENO; + + if (term_set_raw_mode( term ) == -1 ) goto exit_error; + + term->term_col = term_get_maxcol( term );//not good if (term->term_col == -1) ret = -1; - term->term_row = term_get_row(); + term->term_row = term_get_maxrow( term );//not good if (term->term_row == -1) ret = -1; term->mode = SCREEN_MODE_80x24; return ret; + +exit_error: + errno = ENOTTY; + return -1; } -int term_get_col( ) +int term_get_maxcol( term_screen *ts ) { int ret=-1; - int fret=-1; + int orig_c; + int cur_c; + + /* get initial cursor position */ + if ( (orig_c = term_cur_pos_c( ts )) == -1 ) + goto exit_error; + + + /* go to right marging and get position */ + if ( write( ts->ofd, T_ESC "[999C", 6 ) != 6 ) + goto exit_error; + if ( (cur_c = term_cur_pos_c( ts )) == -1 ) + goto exit_error; + ret = cur_c; + + /* restore position */ + { + char buf[32]; + snprintf( buf, 32, T_ESC "[" "%d" "D", cur_c-orig_c); + write( ts->ofd, buf, strlen(buf) ); + } + + return ret; + +exit_error: + return -1; + +} + + +int term_get_maxrow( term_screen *ts ) +{ + int ret=-1; + int orig_r; + int cur_r; + + /* get initial cursor position */ + if ( (orig_r = term_cur_pos_r( ts )) == -1 ) + goto exit_error; + + + /* go to right marging and get position */ + if ( write( ts->ofd, T_ESC "[999B", 6 ) != 6 ) + goto exit_error; + if ( (cur_r = term_cur_pos_r( ts )) == -1 ) + goto exit_error; + ret = cur_r; + + //PNL(); + /* restore position */ + { + char buf[32]; + snprintf( buf, 32, T_ESC "[" "%d" "A", cur_r-orig_r); + write( ts->ofd, buf, strlen(buf) ); + } + + //PNL(); + + return ret; + +exit_error: + //PNL(); + return -1; +} + +int term_cur_pos( term_screen *ts ) +{ + int ret=-1; + return ret; +} - struct winsize w; +int term_cur_pos_c( term_screen *ts ) +{ + unsigned int i; + int row, col; + char buf[32]; + if ( write( ts->ofd, "\x1b[6n", 4 ) != 4 ) goto exit_error; - fret = ioctl(0, TIOCGWINSZ, &w ); - if ( fret == 0 ) + i = 0; + while (i < sizeof(buf)-1) { - return w.ws_col; + if ( read( ts->ifd, buf+i,1 ) != 1 ) break; + if (buf[i] == 'R') break; + i++; } + buf[i] = '\0'; + /* Parse terminal response */ + if ( buf[0] != '\x1b' || buf[1] != '[' ) goto exit_error; + if ( sscanf( buf+2, "%d;%d", &row, &col) != 2 ) goto exit_error; + return col; +exit_error: return -1; } -int term_get_row( ) +int term_cur_pos_r( term_screen *ts ) { - int ret=-1; - int fret=-1; - - struct winsize w; + unsigned int i; + int row, col; + char buf[32]; + if ( write( ts->ofd, "\x1b[6n", 4 ) != 4 ) goto exit_error; - fret = ioctl(0, TIOCGWINSZ, &w ); - if ( fret == 0 ) + i = 0; + while (i < sizeof(buf)-1) { - return w.ws_row; + if ( read( ts->ifd, buf+i,1 ) != 1 ) break; + if (buf[i] == 'R') break; + i++; } + buf[i] = '\0'; + /* Parse terminal response */ + if ( buf[0] != '\x1b' || buf[1] != '[' ) goto exit_error; + if ( sscanf( buf+2, "%d;%d", &row, &col) != 2 ) goto exit_error; + + return row; +exit_error: return -1; } + +int term_cur_set_c( term_screen *ts ) +{ + +} + + +int term_cur_set_r( term_screen *ts ) +{ + +} + +int term_set_speed( term_screen *ts ) +{ + int ret = -1; + return ret; +} + +int term_clr_scr( term_screen *ts ) +{ + int ret = 0; + + if ( write( ts->ofd, T_ESC "[H" T_ESC "[2J", 7 ) <= 0 );; + + return ret; +} + + +int term_set_raw_mode( term_screen *ts ) +{ + int ret = 0; + + if ( tcgetattr( ts->ifd, &ts->orig ) == -1 ) goto exit_error; + + + ts->raw = ts->orig; /* modify the original mode */ + /* input modes: no break, no CR to NL, no parity check, no strip char, + * no start/stop output control. */ + ts->raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON); + /* output modes - disable post raw */ + ts->raw.c_oflag &= ~(OPOST); + /* control modes - set 8 bit chars */ + ts->raw.c_cflag |= (CS8); + /* local modes - choing off, canonical off, no extended functions, + * no signal chars (^Z,^C) */ + ts->raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG); + /* control chars - set return condition: min number of bytes and timer. + * We want read to return every single byte, without timeout. */ + ts->raw.c_cc[VMIN] = 1; + ts->raw.c_cc[VTIME] = 0; /* 1 byte, no timer */ + + /* put terminal in raw mode after flushing */ + if (tcsetattr( ts->ifd, TCSAFLUSH, &ts->raw) < 0) goto exit_error; + + + return ret; + +exit_error: + errno = ENOTTY; + return -1; + +} + + + +void term_set_orig_mode( term_screen *ts ) +{ + tcsetattr( ts->ifd, TCSAFLUSH, &ts->orig ); +}
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