diff options
Diffstat (limited to 'editors')
| -rw-r--r-- | editors/vi.c | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/editors/vi.c b/editors/vi.c index 27f2a3a..02bdbb3 100644 --- a/editors/vi.c +++ b/editors/vi.c @@ -147,10 +147,10 @@ struct globals { #endif smallint editing; // >0 while we are editing a file - // [code audit says "can be 0 or 1 only"] + // [code audit says "can be 0, 1 or 2 only"] smallint cmd_mode; // 0=command 1=insert 2=replace int file_modified; // buffer contents changed (counter, not flag!) - int last_file_modified; // = -1; + int last_file_modified; // = -1; int fn_start; // index of first cmd line file name int save_argc; // how many file names on cmd line int cmdcnt; // repetition count @@ -623,7 +623,7 @@ static void edit_file(char *fn) // These are commands that change text[]. // Remember the input for the "." command if (!adding2q && ioq_start == NULL - && strchr(modifying_cmds, c) + && c != '\0' && strchr(modifying_cmds, c) ) { start_new_cmd_q(c); } @@ -645,8 +645,8 @@ static void edit_file(char *fn) } //------------------------------------------------------------------- - place_cursor(rows, 0, FALSE); // go to bottom of screen - clear_to_eol(); // Erase to end of line + place_cursor(rows - 1, 0, FALSE); // go to bottom of screen + clear_to_eol(); // erase to end of line cookmode(); #undef cur_line } @@ -2009,9 +2009,9 @@ static void start_new_cmd_q(char c) { // get buffer for new cmd // if there is a current cmd count put it in the buffer first - if (cmdcnt > 0) + if (cmdcnt > 0) { lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c); - else { // just save char c onto queue + } else { // just save char c onto queue last_modifying_cmd[0] = c; lmc_len = 1; } @@ -2157,21 +2157,21 @@ static void winch_sig(int sig UNUSED_PARAM) //----- Come here when we get a continue signal ------------------- static void cont_sig(int sig UNUSED_PARAM) { - rawmode(); // terminal to "raw" - last_status_cksum = 0; // force status update - redraw(TRUE); // re-draw the screen + rawmode(); // terminal to "raw" + last_status_cksum = 0; // force status update + redraw(TRUE); // re-draw the screen signal(SIGTSTP, suspend_sig); signal(SIGCONT, SIG_DFL); - kill(my_pid, SIGCONT); + kill(my_pid, SIGCONT); // huh? why? we are already "continued"... } //----- Come here when we get a Suspend signal ------------------- static void suspend_sig(int sig UNUSED_PARAM) { - place_cursor(rows - 1, 0, FALSE); // go to bottom of screen - clear_to_eol(); // Erase to end of line - cookmode(); // terminal to "cooked" + place_cursor(rows - 1, 0, FALSE); // go to bottom of screen + clear_to_eol(); // erase to end of line + cookmode(); // terminal to "cooked" signal(SIGCONT, cont_sig); signal(SIGTSTP, SIG_DFL); @@ -2247,18 +2247,20 @@ static char readit(void) // read (maybe cursor) key from stdin fflush(stdout); n = chars_to_parse; - // get input from User- are there already input chars in Q? + // get input from User - are there already input chars in Q? if (n <= 0) { // the Q is empty, wait for a typed char + again: n = safe_read(STDIN_FILENO, readbuffer, sizeof(readbuffer)); - if (n < 0) { - if (errno == EBADF || errno == EFAULT || errno == EINVAL - || errno == EIO) - editing = 0; // want to exit - errno = 0; - } - if (n <= 0) - return 0; // error + if (n <= 0) { + place_cursor(rows - 1, 0, FALSE); // go to bottom of screen + clear_to_eol(); // erase to end of line + cookmode(); // terminal to "cooked" + bb_error_msg_and_die("can't read user input"); + } + /* elsewhere we can get very confused by NULs */ + if (readbuffer[0] == '\0') + goto again; if (readbuffer[0] == 27) { // This is an ESC char. Is this Esc sequence? // Could be bare Esc key. See if there are any |