diff options
Diffstat (limited to 'libterm/term.c')
| -rw-r--r-- | libterm/term.c | 114 |
1 files changed, 87 insertions, 27 deletions
diff --git a/libterm/term.c b/libterm/term.c index 9a4e231..1aa7afa 100644 --- a/libterm/term.c +++ b/libterm/term.c @@ -26,26 +26,33 @@ enum KEY_ACTION{ #define T_ESC "\x1b" +//setup initial terminal stuff +//this coulc act differently, becouse allways there is +//different terminal setting that should be default int term_init( term_screen *term ) { int ret=0; - if ( !isatty(STDIN_FILENO) ) goto exit_error; + memset( term, 0, sizeof( term_screen )); + + if ( !isatty(STDIN_FILENO) ) + { + ERROR("isatty failed\n") + goto exit_error; + } //!!!!!! //register atexit term->ifd = STDIN_FILENO; term->ofd = STDOUT_FILENO; - if (term_set_raw_mode( term ) == -1 ) goto exit_error; + //if you whant raw mode then you should set it man + if ( tcgetattr( term->ifd, &term->orig_i ) == -1 ) goto exit_error; + term->raw_i = term->orig_i; - term->term_col = term_get_maxcol( term );//not good - if (term->term_col == -1) ret = -1; + //if (term_set_raw_mode( term ) == -1 ) goto exit_error; - term->term_row = term_get_maxrow( term );//not good - if (term->term_row == -1) ret = -1; - - term->mode = SCREEN_MODE_80x24; + term->mode = SCREEN_MODE_80x24; return ret; @@ -54,7 +61,9 @@ exit_error: return -1; } - +//get maximal number of columns setting up cursor to 999 column +//and getting on with place terminal have placed cursor and getting +//column on with terminal putted cursor int term_get_maxcol( term_screen *ts ) { int ret=-1; @@ -87,7 +96,8 @@ exit_error: } - +//try to setup far away line after that read position where +//terminal have putted cursor and read line of that postion int term_get_maxrow( term_screen *ts ) { int ret=-1; @@ -123,6 +133,8 @@ exit_error: return -1; } + + int term_cur_pos( term_screen *ts ) { int ret=-1; @@ -182,16 +194,56 @@ exit_error: return -1; } - -int term_cur_set_c( term_screen *ts ) +//set cursor column position +int term_cur_set_c( term_screen *ts, unsigned int pc ) { + int ret = 0; + int cur_r; -} + /* go to right marging and get position */ + if ( (cur_r = term_cur_pos_r( ts )) == -1 ) + goto exit_error; + /* set position */ + { + char buf[32]; + int l; + + snprintf( buf, 32, T_ESC "[%d;%dH", cur_r, pc); + l = strlen( buf ); + if ( write( ts->ofd, buf, l ) != l) + goto exit_error; + } + + return ret; +exit_error: + return -1; +} -int term_cur_set_r( term_screen *ts ) +//set cursor row/line position +int term_cur_set_r( term_screen *ts, unsigned int pr ) { + int ret = 0; + int cur_c; + + /* go to right marging and get position */ + if ( (cur_c = term_cur_pos_c( ts )) == -1 ) + goto exit_error; + /* set position */ + { + char buf[32]; + int l; + + snprintf( buf, 32, T_ESC "[%d;%dH", pr, cur_c); + l = strlen( buf ); + if ( write( ts->ofd, buf, l ) != l) + goto exit_error; + } + + return ret; +exit_error: + return -1; } int term_set_speed( term_screen *ts ) @@ -200,6 +252,8 @@ int term_set_speed( term_screen *ts ) return ret; } + +//clean terminal with escape command int term_clr_scr( term_screen *ts ) { int ret = 0; @@ -209,33 +263,39 @@ int term_clr_scr( term_screen *ts ) return ret; } - +//set terminal default input/output behavior int term_set_raw_mode( term_screen *ts ) { int ret = 0; - if ( tcgetattr( ts->ifd, &ts->orig ) == -1 ) goto exit_error; - + if ( tcgetattr( ts->ifd, &ts->orig_i ) == -1 ) + { + ERROR("Cannot get input terminal attributes\n"); + goto exit_error; + } - ts->raw = ts->orig; /* modify the original mode */ + ts->raw_i = ts->orig_i; /* 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); + ts->raw_i.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON); /* output modes - disable post raw */ - ts->raw.c_oflag &= ~(OPOST); + ts->raw_i.c_oflag &= ~(OPOST); /* control modes - set 8 bit chars */ - ts->raw.c_cflag |= (CS8); + ts->raw_i.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); + ts->raw_i.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 */ + ts->raw_i.c_cc[VMIN] = 1; + ts->raw_i.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; - + if (tcsetattr( ts->ifd, TCSAFLUSH, &ts->raw_i) < 0) + { + ERROR("Cannot set new terminal input attribures\n"); + goto exit_error; + } return ret; @@ -249,5 +309,5 @@ exit_error: void term_set_orig_mode( term_screen *ts ) { - tcsetattr( ts->ifd, TCSAFLUSH, &ts->orig ); + tcsetattr( ts->ifd, TCSAFLUSH, &ts->orig_i ); }
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