static void vi_Back_motion(char *command) { while (cursor > 0 && isspace(command[cursor-1])) input_backward(1); while (cursor > 0 && !isspace(command[cursor-1])) input_backward(1); }
/* Delete the char in back of the cursor */ static void input_backspace(void) { if (cursor > 0) { input_backward(1); input_delete(0); } }
/* Delete the char in front of the cursor, optionally saving it * for later putback */ static void input_delete(int save) { int j = cursor; if (j == command_len) return; #if ENABLE_FEATURE_EDITING_VI if (save) { if (newdelflag) { if (!delbuf) delbuf = malloc(DELBUFSIZ); /* safe if malloc fails */ delp = delbuf; newdelflag = 0; } if (delbuf && (delp - delbuf < DELBUFSIZ)) *delp++ = command_ps[j]; } #endif strcpy(command_ps + j, command_ps + j + 1); command_len--; input_end(); /* rewrite new line */ cmdedit_set_out_char(' '); /* erase char */ input_backward(cursor - j); /* back to old pos cursor */ }
/* draw prompt, editor line, and clear tail */ static void redraw(int y, int back_cursor) { if (y > 0) /* up to start y */ printf("\033[%dA", y); putchar('\r'); put_prompt(); input_end(); /* rewrite */ printf("\033[J"); /* erase after cursor */ input_backward(back_cursor); }
static void vi_back_motion(char *command) { if (cursor <= 0) return; input_backward(1); while (cursor > 0 && isspace(command[cursor])) input_backward(1); if (cursor <= 0) return; if (isalnum(command[cursor]) || command[cursor] == '_') { while (cursor > 0 && (isalnum(command[cursor-1]) || command[cursor-1] == '_') ) { input_backward(1); } } else if (ispunct(command[cursor])) { while (cursor > 0 && ispunct(command[cursor-1])) input_backward(1); } }
static void put(void) { int ocursor, j = delp - delbuf; if (j == 0) return; ocursor = cursor; /* open hole and then fill it */ memmove(command_ps + cursor + j, command_ps + cursor, len - cursor + 1); strncpy(command_ps + cursor, delbuf, j); len += j; input_end(); /* rewrite new line */ input_backward(cursor - ocursor - j + 1); /* at end of new text */ }
/* Do TAB completion */ static void input_tab(int *lastWasTab) { if (!(state->flags & TAB_COMPLETION)) return; if (!*lastWasTab) { char *tmp, *tmp1; int len_found; char matchBuf[MAX_LINELEN]; int find_type; int recalc_pos; *lastWasTab = TRUE; /* flop trigger */ /* Make a local copy of the string -- up * to the position of the cursor */ tmp = strncpy(matchBuf, command_ps, cursor); tmp[cursor] = '\0'; find_type = find_match(matchBuf, &recalc_pos); /* Free up any memory already allocated */ free_tab_completion_data(); #if ENABLE_FEATURE_USERNAME_COMPLETION /* If the word starts with `~' and there is no slash in the word, * then try completing this word as a username. */ if (state->flags & USERNAME_COMPLETION) if (matchBuf[0] == '~' && strchr(matchBuf, '/') == 0) username_tab_completion(matchBuf, NULL); #endif /* Try to match any executable in our path and everything * in the current working directory */ if (!matches) exe_n_cwd_tab_completion(matchBuf, find_type); /* Sort, then remove any duplicates found */ if (matches) { int i, n = 0; qsort(matches, num_matches, sizeof(char*), match_compare); for (i = 0; i < num_matches - 1; ++i) { if (matches[i] && matches[i+1]) { /* paranoia */ if (strcmp(matches[i], matches[i+1]) == 0) { free(matches[i]); matches[i] = NULL; /* paranoia */ } else { matches[n++] = matches[i]; } } } matches[n] = matches[i]; num_matches = n + 1; } /* Did we find exactly one match? */ if (!matches || num_matches > 1) { beep(); if (!matches) return; /* not found */ /* find minimal match */ // ash: yet another failure in trying to achieve "we don't die on OOM" tmp1 = xstrdup(matches[0]); for (tmp = tmp1; *tmp; tmp++) for (len_found = 1; len_found < num_matches; len_found++) if (matches[len_found][(tmp - tmp1)] != *tmp) { *tmp = '\0'; break; } if (*tmp1 == '\0') { /* have unique */ free(tmp1); return; } tmp = add_quote_for_spec_chars(tmp1); free(tmp1); } else { /* one match */ tmp = add_quote_for_spec_chars(matches[0]); /* for next completion current found */ *lastWasTab = FALSE; len_found = strlen(tmp); if (tmp[len_found-1] != '/') { tmp[len_found] = ' '; tmp[len_found+1] = '\0'; } } len_found = strlen(tmp); /* have space to placed match? */ if ((len_found - strlen(matchBuf) + command_len) < MAX_LINELEN) { /* before word for match */ command_ps[cursor - recalc_pos] = 0; /* save tail line */ strcpy(matchBuf, command_ps + cursor); /* add match */ strcat(command_ps, tmp); /* add tail */ strcat(command_ps, matchBuf); /* back to begin word for match */ input_backward(recalc_pos); /* new pos */ recalc_pos = cursor + len_found; /* new len */ command_len = strlen(command_ps); /* write out the matched command */ redraw(cmdedit_y, command_len - recalc_pos); } free(tmp); } else { /* Ok -- the last char was a TAB. Since they * just hit TAB again, print a list of all the * available choices... */ if (matches && num_matches > 0) { int sav_cursor = cursor; /* change goto_new_line() */ /* Go to the next line */ goto_new_line(); showfiles(); redraw(0, command_len - sav_cursor); } } }
/* Returns: * -1 on read errors or EOF, or on bare Ctrl-D. * 0 on ctrl-C, * >0 length of input string, including terminating '\n' */ int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *st) { int lastWasTab = FALSE; unsigned int ic; unsigned char c; smallint break_out = 0; #if ENABLE_FEATURE_EDITING_VI smallint vi_cmdmode = 0; smalluint prevc; #endif if (maxsize > MAX_LINELEN) maxsize = MAX_LINELEN; /* With null flags, no other fields are ever used */ state = st ? st : (line_input_t*) &const_int_0; #if ENABLE_FEATURE_EDITING_SAVEHISTORY if ((state->flags & SAVE_HISTORY) && state->hist_file) load_history(state->hist_file); #endif /* prepare before init handlers */ cmdedit_y = 0; /* quasireal y, not true if line > xt*yt */ command_len = 0; command_ps = command; command[0] = '\0'; getTermSettings(0, (void *) &initial_settings); memcpy(&new_settings, &initial_settings, sizeof(new_settings)); new_settings.c_lflag &= ~ICANON; /* unbuffered input */ /* Turn off echoing and CTRL-C, so we can trap it */ new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG); /* Hmm, in linux c_cc[] is not parsed if ICANON is off */ new_settings.c_cc[VMIN] = 1; new_settings.c_cc[VTIME] = 0; /* Turn off CTRL-C, so we can trap it */ #ifndef _POSIX_VDISABLE #define _POSIX_VDISABLE '\0' #endif new_settings.c_cc[VINTR] = _POSIX_VDISABLE; setTermSettings(0, (void *) &new_settings); /* Now initialize things */ previous_SIGWINCH_handler = signal(SIGWINCH, win_changed); win_changed(0); /* do initial resizing */ #if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR { struct passwd *entry; entry = getpwuid(geteuid()); if (entry) { /* If we enter read_line_input for the Nth time, * they may be already allocated! Need to free. */ free(user_buf); if (home_pwd_buf != null_str) free(home_pwd_buf); user_buf = xstrdup(entry->pw_name); home_pwd_buf = xstrdup(entry->pw_dir); /* They are not freed on exit (too small to bother) */ } } #endif /* Print out the command prompt */ parse_prompt(prompt); while (1) { fflush(stdout); if (safe_read(0, &c, 1) < 1) { /* if we can't read input then exit */ goto prepare_to_die; } ic = c; #if ENABLE_FEATURE_EDITING_VI newdelflag = 1; if (vi_cmdmode) ic |= vbit; #endif switch (ic) { case '\n': case '\r': vi_case('\n'|vbit:) vi_case('\r'|vbit:) /* Enter */ goto_new_line(); break_out = 1; break; #if ENABLE_FEATURE_EDITING_FANCY_KEYS case CTRL('A'): vi_case('0'|vbit:) /* Control-a -- Beginning of line */ input_backward(cursor); break; case CTRL('B'): vi_case('h'|vbit:) vi_case('\b'|vbit:) vi_case('\x7f'|vbit:) /* DEL */ /* Control-b -- Move back one character */ input_backward(1); break; #endif case CTRL('C'): vi_case(CTRL('C')|vbit:) /* Control-c -- stop gathering input */ goto_new_line(); command_len = 0; break_out = -1; /* "do not append '\n'" */ break; case CTRL('D'): /* Control-d -- Delete one character, or exit * if the len=0 and no chars to delete */ if (command_len == 0) { errno = 0; prepare_to_die: /* to control stopped jobs */ break_out = command_len = -1; break; } input_delete(0); break; #if ENABLE_FEATURE_EDITING_FANCY_KEYS case CTRL('E'): vi_case('$'|vbit:) /* Control-e -- End of line */ input_end(); break; case CTRL('F'): vi_case('l'|vbit:) vi_case(' '|vbit:) /* Control-f -- Move forward one character */ input_forward(); break; #endif case '\b': case '\x7f': /* DEL */ /* Control-h and DEL */ input_backspace(); break; case '\t': input_tab(&lastWasTab); break; #if ENABLE_FEATURE_EDITING_FANCY_KEYS case CTRL('K'): /* Control-k -- clear to end of line */ command[cursor] = 0; command_len = cursor; printf("\033[J"); break; case CTRL('L'): vi_case(CTRL('L')|vbit:) /* Control-l -- clear screen */ printf("\033[H"); redraw(0, command_len - cursor); break; #endif #if MAX_HISTORY > 0 case CTRL('N'): vi_case(CTRL('N')|vbit:) vi_case('j'|vbit:) /* Control-n -- Get next command in history */ if (get_next_history()) goto rewrite_line; break; case CTRL('P'): vi_case(CTRL('P')|vbit:) vi_case('k'|vbit:) /* Control-p -- Get previous command from history */ if ((state->flags & DO_HISTORY) && state->cur_history > 0) { get_previous_history(); goto rewrite_line; } beep(); break; #endif #if ENABLE_FEATURE_EDITING_FANCY_KEYS case CTRL('U'): vi_case(CTRL('U')|vbit:) /* Control-U -- Clear line before cursor */ if (cursor) { strcpy(command, command + cursor); command_len -= cursor; redraw(cmdedit_y, command_len); } break; #endif case CTRL('W'): vi_case(CTRL('W')|vbit:) /* Control-W -- Remove the last word */ while (cursor > 0 && isspace(command[cursor-1])) input_backspace(); while (cursor > 0 && !isspace(command[cursor-1])) input_backspace(); break; #if ENABLE_FEATURE_EDITING_VI case 'i'|vbit: vi_cmdmode = 0; break; case 'I'|vbit: input_backward(cursor); vi_cmdmode = 0; break; case 'a'|vbit: input_forward(); vi_cmdmode = 0; break; case 'A'|vbit: input_end(); vi_cmdmode = 0; break; case 'x'|vbit: input_delete(1); break; case 'X'|vbit: if (cursor > 0) { input_backward(1); input_delete(1); } break; case 'W'|vbit: vi_Word_motion(command, 1); break; case 'w'|vbit: vi_word_motion(command, 1); break; case 'E'|vbit: vi_End_motion(command); break; case 'e'|vbit: vi_end_motion(command); break; case 'B'|vbit: vi_Back_motion(command); break; case 'b'|vbit: vi_back_motion(command); break; case 'C'|vbit: vi_cmdmode = 0; /* fall through */ case 'D'|vbit: goto clear_to_eol; case 'c'|vbit: vi_cmdmode = 0; /* fall through */ case 'd'|vbit: { int nc, sc; sc = cursor; prevc = ic; if (safe_read(0, &c, 1) < 1) goto prepare_to_die; if (c == (prevc & 0xff)) { /* "cc", "dd" */ input_backward(cursor); goto clear_to_eol; break; } switch (c) { case 'w': case 'W': case 'e': case 'E': switch (c) { case 'w': /* "dw", "cw" */ vi_word_motion(command, vi_cmdmode); break; case 'W': /* 'dW', 'cW' */ vi_Word_motion(command, vi_cmdmode); break; case 'e': /* 'de', 'ce' */ vi_end_motion(command); input_forward(); break; case 'E': /* 'dE', 'cE' */ vi_End_motion(command); input_forward(); break; } nc = cursor; input_backward(cursor - sc); while (nc-- > cursor) input_delete(1); break; case 'b': /* "db", "cb" */ case 'B': /* implemented as B */ if (c == 'b') vi_back_motion(command); else vi_Back_motion(command); while (sc-- > cursor) input_delete(1); break; case ' ': /* "d ", "c " */ input_delete(1); break; case '$': /* "d$", "c$" */ clear_to_eol: while (cursor < command_len) input_delete(1); break; } break; } case 'p'|vbit: input_forward(); /* fallthrough */ case 'P'|vbit: put(); break; case 'r'|vbit: if (safe_read(0, &c, 1) < 1) goto prepare_to_die; if (c == 0) beep(); else { *(command + cursor) = c; putchar(c); putchar('\b'); } break; #endif /* FEATURE_COMMAND_EDITING_VI */ case '\x1b': /* ESC */ #if ENABLE_FEATURE_EDITING_VI if (state->flags & VI_MODE) { /* ESC: insert mode --> command mode */ vi_cmdmode = 1; input_backward(1); break; } #endif /* escape sequence follows */ if (safe_read(0, &c, 1) < 1) goto prepare_to_die; /* different vt100 emulations */ if (c == '[' || c == 'O') { vi_case('['|vbit:) vi_case('O'|vbit:) if (safe_read(0, &c, 1) < 1) goto prepare_to_die; } if (c >= '1' && c <= '9') { unsigned char dummy; if (safe_read(0, &dummy, 1) < 1) goto prepare_to_die; if (dummy != '~') c = '\0'; } switch (c) { #if ENABLE_FEATURE_TAB_COMPLETION case '\t': /* Alt-Tab */ input_tab(&lastWasTab); break; #endif #if MAX_HISTORY > 0 case 'A': /* Up Arrow -- Get previous command from history */ if ((state->flags & DO_HISTORY) && state->cur_history > 0) { get_previous_history(); goto rewrite_line; } beep(); break; case 'B': /* Down Arrow -- Get next command in history */ if (!get_next_history()) break; rewrite_line: /* Rewrite the line with the selected history item */ /* change command */ command_len = strlen(strcpy(command, state->history[state->cur_history])); /* redraw and go to eol (bol, in vi */ redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0); break; #endif case 'C': /* Right Arrow -- Move forward one character */ input_forward(); break; case 'D': /* Left Arrow -- Move back one character */ input_backward(1); break; case '3': /* Delete */ input_delete(0); break; case '1': // vt100? linux vt? or what? case '7': // vt100? linux vt? or what? case 'H': /* xterm's <Home> */ input_backward(cursor); break; case '4': // vt100? linux vt? or what? case '8': // vt100? linux vt? or what? case 'F': /* xterm's <End> */ input_end(); break; default: c = '\0'; beep(); } break; default: /* If it's regular input, do the normal thing */ #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT /* Control-V -- Add non-printable symbol */ if (c == CTRL('V')) { if (safe_read(0, &c, 1) < 1) goto prepare_to_die; if (c == 0) { beep(); break; } } else #endif #if ENABLE_FEATURE_EDITING_VI if (vi_cmdmode) /* Don't self-insert */ break; #endif if (!Isprint(c)) /* Skip non-printable characters */ break; if (command_len >= (maxsize - 2)) /* Need to leave space for enter */ break; command_len++; if (cursor == (command_len - 1)) { /* Append if at the end of the line */ command[cursor] = c; command[cursor+1] = '\0'; cmdedit_set_out_char(' '); } else { /* Insert otherwise */ int sc = cursor; memmove(command + sc + 1, command + sc, command_len - sc); command[sc] = c; sc++; /* rewrite from cursor */ input_end(); /* to prev x pos + 1 */ input_backward(cursor - sc); } break; } if (break_out) /* Enter is the command terminator, no more input. */ break; if (c != '\t') lastWasTab = FALSE; }
int cmdedit_read_input(char *prompt, char command[BUFSIZ]) { int break_out = 0; int lastWasTab = FALSE; unsigned char c; unsigned int ic; #if ENABLE_FEATURE_COMMAND_EDITING_VI unsigned int prevc; int vi_cmdmode = 0; #endif /* prepare before init handlers */ cmdedit_y = 0; /* quasireal y, not true work if line > xt*yt */ len = 0; command_ps = command; getTermSettings(0, (void *) &initial_settings); memcpy(&new_settings, &initial_settings, sizeof(struct termios)); new_settings.c_lflag &= ~ICANON; /* unbuffered input */ /* Turn off echoing and CTRL-C, so we can trap it */ new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG); /* Hmm, in linux c_cc[] not parsed if set ~ICANON */ new_settings.c_cc[VMIN] = 1; new_settings.c_cc[VTIME] = 0; /* Turn off CTRL-C, so we can trap it */ # ifndef _POSIX_VDISABLE # define _POSIX_VDISABLE '\0' # endif new_settings.c_cc[VINTR] = _POSIX_VDISABLE; command[0] = 0; setTermSettings(0, (void *) &new_settings); handlers_sets |= SET_RESET_TERM; /* Now initialize things */ cmdedit_init(); /* Print out the command prompt */ parse_prompt(prompt); while (1) { fflush(stdout); /* buffered out to fast */ if (safe_read(0, &c, 1) < 1) /* if we can't read input then exit */ goto prepare_to_die; ic = c; #if ENABLE_FEATURE_COMMAND_EDITING_VI newdelflag = 1; if (vi_cmdmode) ic |= vbit; #endif switch (ic) { case '\n': case '\r': vi_case( case '\n'|vbit: ) vi_case( case '\r'|vbit: ) /* Enter */ goto_new_line(); break_out = 1; break; case CNTRL('A'): vi_case( case '0'|vbit: ) /* Control-a -- Beginning of line */ input_backward(cursor); break; case CNTRL('B'): vi_case( case 'h'|vbit: ) vi_case( case '\b'|vbit: ) vi_case( case DEL|vbit: ) /* Control-b -- Move back one character */ input_backward(1); break; case CNTRL('C'): vi_case( case CNTRL('C')|vbit: ) /* Control-c -- stop gathering input */ goto_new_line(); #if !ENABLE_ASH command[0] = 0; len = 0; lastWasTab = FALSE; put_prompt(); #else len = 0; break_out = -1; /* to control traps */ #endif break; case CNTRL('D'): /* Control-d -- Delete one character, or exit * if the len=0 and no chars to delete */ if (len == 0) { errno = 0; prepare_to_die: #if !ENABLE_ASH printf("exit"); goto_new_line(); /* cmdedit_reset_term() called in atexit */ exit(EXIT_SUCCESS); #else /* to control stopped jobs */ len = break_out = -1; break; #endif } else { input_delete(0); } break; case CNTRL('E'): vi_case( case '$'|vbit: ) /* Control-e -- End of line */ input_end(); break; case CNTRL('F'): vi_case( case 'l'|vbit: ) vi_case( case ' '|vbit: ) /* Control-f -- Move forward one character */ input_forward(); break; case '\b': case DEL: /* Control-h and DEL */ input_backspace(); break; case '\t': #if ENABLE_FEATURE_COMMAND_TAB_COMPLETION input_tab(&lastWasTab); #endif break; case CNTRL('K'): /* Control-k -- clear to end of line */ command[cursor] = 0; len = cursor; printf("\033[J"); break; case CNTRL('L'): vi_case( case CNTRL('L')|vbit: ) /* Control-l -- clear screen */ printf("\033[H"); redraw(0, len - cursor); break; #if MAX_HISTORY > 0 case CNTRL('N'): vi_case( case CNTRL('N')|vbit: ) vi_case( case 'j'|vbit: ) /* Control-n -- Get next command in history */ if (get_next_history()) goto rewrite_line; break; case CNTRL('P'): vi_case( case CNTRL('P')|vbit: ) vi_case( case 'k'|vbit: ) /* Control-p -- Get previous command from history */ if (cur_history > 0) { get_previous_history(); goto rewrite_line; } else { beep(); } break; #endif case CNTRL('U'): vi_case( case CNTRL('U')|vbit: ) /* Control-U -- Clear line before cursor */ if (cursor) { strcpy(command, command + cursor); redraw(cmdedit_y, len -= cursor); } break; case CNTRL('W'): vi_case( case CNTRL('W')|vbit: ) /* Control-W -- Remove the last word */ while (cursor > 0 && isspace(command[cursor-1])) input_backspace(); while (cursor > 0 &&!isspace(command[cursor-1])) input_backspace(); break; #if ENABLE_FEATURE_COMMAND_EDITING_VI case 'i'|vbit: vi_cmdmode = 0; break; case 'I'|vbit: input_backward(cursor); vi_cmdmode = 0; break; case 'a'|vbit: input_forward(); vi_cmdmode = 0; break; case 'A'|vbit: input_end(); vi_cmdmode = 0; break; case 'x'|vbit: input_delete(1); break; case 'X'|vbit: if (cursor > 0) { input_backward(1); input_delete(1); } break; case 'W'|vbit: vi_Word_motion(command, 1); break; case 'w'|vbit: vi_word_motion(command, 1); break; case 'E'|vbit: vi_End_motion(command); break; case 'e'|vbit: vi_end_motion(command); break; case 'B'|vbit: vi_Back_motion(command); break; case 'b'|vbit: vi_back_motion(command); break; case 'C'|vbit: vi_cmdmode = 0; /* fall through */ case 'D'|vbit: goto clear_to_eol; case 'c'|vbit: vi_cmdmode = 0; /* fall through */ case 'd'|vbit: { int nc, sc; sc = cursor; prevc = ic; if (safe_read(0, &c, 1) < 1) goto prepare_to_die; if (c == (prevc & 0xff)) { /* "cc", "dd" */ input_backward(cursor); goto clear_to_eol; break; } switch (c) { case 'w': case 'W': case 'e': case 'E': switch (c) { case 'w': /* "dw", "cw" */ vi_word_motion(command, vi_cmdmode); break; case 'W': /* 'dW', 'cW' */ vi_Word_motion(command, vi_cmdmode); break; case 'e': /* 'de', 'ce' */ vi_end_motion(command); input_forward(); break; case 'E': /* 'dE', 'cE' */ vi_End_motion(command); input_forward(); break; } nc = cursor; input_backward(cursor - sc); while (nc-- > cursor) input_delete(1); break; case 'b': /* "db", "cb" */ case 'B': /* implemented as B */ if (c == 'b') vi_back_motion(command); else vi_Back_motion(command); while (sc-- > cursor) input_delete(1); break; case ' ': /* "d ", "c " */ input_delete(1); break; case '$': /* "d$", "c$" */ clear_to_eol: while (cursor < len) input_delete(1); break; } break; } case 'p'|vbit: input_forward(); /* fallthrough */ case 'P'|vbit: put(); break; case 'r'|vbit: if (safe_read(0, &c, 1) < 1) goto prepare_to_die; if (c == 0) beep(); else { *(command + cursor) = c; putchar(c); putchar('\b'); } break; #endif /* FEATURE_COMMAND_EDITING_VI */ case ESC: #if ENABLE_FEATURE_COMMAND_EDITING_VI if (vi_mode) { /* ESC: insert mode --> command mode */ vi_cmdmode = 1; input_backward(1); break; } #endif /* escape sequence follows */ if (safe_read(0, &c, 1) < 1) goto prepare_to_die; /* different vt100 emulations */ if (c == '[' || c == 'O') { vi_case( case '['|vbit: ) vi_case( case 'O'|vbit: ) if (safe_read(0, &c, 1) < 1) goto prepare_to_die; } if (c >= '1' && c <= '9') { unsigned char dummy; if (safe_read(0, &dummy, 1) < 1) goto prepare_to_die; if (dummy != '~') c = 0; } switch (c) { #if ENABLE_FEATURE_COMMAND_TAB_COMPLETION case '\t': /* Alt-Tab */ input_tab(&lastWasTab); break; #endif #if MAX_HISTORY > 0 case 'A': /* Up Arrow -- Get previous command from history */ if (cur_history > 0) { get_previous_history(); goto rewrite_line; } else { beep(); } break; case 'B': /* Down Arrow -- Get next command in history */ if (!get_next_history()) break; /* Rewrite the line with the selected history item */ rewrite_line: /* change command */ len = strlen(strcpy(command, history[cur_history])); /* redraw and go to eol (bol, in vi */ #if ENABLE_FEATURE_COMMAND_EDITING_VI redraw(cmdedit_y, vi_mode ? 9999:0); #else redraw(cmdedit_y, 0); #endif break; #endif case 'C': /* Right Arrow -- Move forward one character */ input_forward(); break; case 'D': /* Left Arrow -- Move back one character */ input_backward(1); break; case '3': /* Delete */ input_delete(0); break; case '1': case 'H': /* <Home> */ input_backward(cursor); break; case '4': case 'F': /* <End> */ input_end(); break; default: c = 0; beep(); } break; default: /* If it's regular input, do the normal thing */ #if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT /* Control-V -- Add non-printable symbol */ if (c == CNTRL('V')) { if (safe_read(0, &c, 1) < 1) goto prepare_to_die; if (c == 0) { beep(); break; } } else #endif { #if ENABLE_FEATURE_COMMAND_EDITING_VI if (vi_cmdmode) /* don't self-insert */ break; #endif if (!Isprint(c)) /* Skip non-printable characters */ break; } if (len >= (BUFSIZ - 2)) /* Need to leave space for enter */ break; len++; if (cursor == (len - 1)) { /* Append if at the end of the line */ *(command + cursor) = c; *(command + cursor + 1) = 0; cmdedit_set_out_char(0); } else { /* Insert otherwise */ int sc = cursor; memmove(command + sc + 1, command + sc, len - sc); *(command + sc) = c; sc++; /* rewrite from cursor */ input_end(); /* to prev x pos + 1 */ input_backward(cursor - sc); } break; } if (break_out) /* Enter is the command terminator, no more input. */ break; if (c != '\t') lastWasTab = FALSE; }
static void input_tab(int *lastWasTab) { /* Do TAB completion */ if (lastWasTab == 0) { /* free all memory */ if (matches) { while (num_matches > 0) free(matches[--num_matches]); free(matches); matches = (char **) NULL; free(add_char_to_match); add_char_to_match = NULL; } return; } if (! *lastWasTab) { char *tmp, *tmp1; int len_found; char matchBuf[BUFSIZ]; int find_type; int recalc_pos; *lastWasTab = TRUE; /* flop trigger */ /* Make a local copy of the string -- up * to the position of the cursor */ tmp = strncpy(matchBuf, command_ps, cursor); tmp[cursor] = 0; find_type = find_match(matchBuf, &recalc_pos); /* Free up any memory already allocated */ input_tab(0); #ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION /* If the word starts with `~' and there is no slash in the word, * then try completing this word as a username. */ if (matchBuf[0] == '~' && strchr(matchBuf, '/') == 0) username_tab_completion(matchBuf, NULL); if (!matches) #endif /* Try to match any executable in our path and everything * in the current working directory that matches. */ exe_n_cwd_tab_completion(matchBuf, find_type); /* Remove duplicate found and sort */ if(matches) { int i, j, n, srt; /* bubble */ n = num_matches; for(i=0; i<(n-1); i++) for(j=i+1; j<n; j++) if(matches[i]!=NULL && matches[j]!=NULL) { srt = strcmp(matches[i], matches[j]); if(srt == 0) { free(matches[j]); matches[j]=0; } else if(srt > 0) { tmp1 = matches[i]; matches[i] = matches[j]; matches[j] = tmp1; srt = add_char_to_match[i]; add_char_to_match[i] = add_char_to_match[j]; add_char_to_match[j] = srt; } } j = n; n = 0; for(i=0; i<j; i++) if(matches[i]) { matches[n]=matches[i]; add_char_to_match[n]=add_char_to_match[i]; n++; } num_matches = n; } /* Did we find exactly one match? */ if (!matches || num_matches > 1) { beep(); if (!matches) return; /* not found */ /* find minimal match */ tmp1 = bb_xstrdup(matches[0]); for (tmp = tmp1; *tmp; tmp++) for (len_found = 1; len_found < num_matches; len_found++) if (matches[len_found][(tmp - tmp1)] != *tmp) { *tmp = 0; break; } if (*tmp1 == 0) { /* have unique */ free(tmp1); return; } tmp = add_quote_for_spec_chars(tmp1, 0); free(tmp1); } else { /* one match */ tmp = add_quote_for_spec_chars(matches[0], add_char_to_match[0]); /* for next completion current found */ *lastWasTab = FALSE; } len_found = strlen(tmp); /* have space to placed match? */ if ((len_found - strlen(matchBuf) + len) < BUFSIZ) { /* before word for match */ command_ps[cursor - recalc_pos] = 0; /* save tail line */ strcpy(matchBuf, command_ps + cursor); /* add match */ strcat(command_ps, tmp); /* add tail */ strcat(command_ps, matchBuf); /* back to begin word for match */ input_backward(recalc_pos); /* new pos */ recalc_pos = cursor + len_found; /* new len */ len = strlen(command_ps); /* write out the matched command */ redraw(cmdedit_y, len - recalc_pos); } free(tmp); } else { /* Ok -- the last char was a TAB. Since they * just hit TAB again, print a list of all the * available choices... */ if (matches && num_matches > 0) { int sav_cursor = cursor; /* change goto_new_line() */ /* Go to the next line */ goto_new_line(); showfiles(); redraw(0, len - sav_cursor); } } }