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1799 lines
40 KiB
C
1799 lines
40 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Termios command line History and Editing.
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*
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* Copyright (c) 1986-2003 may safely be consumed by a BSD or GPL license.
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* Written by: Vladimir Oleynik <dzo@simtreas.ru>
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*
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* Used ideas:
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* Adam Rogoyski <rogoyski@cs.utexas.edu>
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* Dave Cinege <dcinege@psychosis.com>
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* Jakub Jelinek (c) 1995
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* Erik Andersen <andersen@codepoet.org> (Majorly adjusted for busybox)
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*
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* This code is 'as is' with no warranty.
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*/
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/*
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Usage and known bugs:
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Terminal key codes are not extensive, and more will probably
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need to be added. This version was created on Debian GNU/Linux 2.x.
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Delete, Backspace, Home, End, and the arrow keys were tested
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to work in an Xterm and console. Ctrl-A also works as Home.
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Ctrl-E also works as End.
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Small bugs (simple effect):
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- not true viewing if terminal size (x*y symbols) less
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size (prompt + editor's line + 2 symbols)
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- not true viewing if length prompt less terminal width
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*/
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#include <sys/ioctl.h>
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#include "busybox.h"
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/* FIXME: obsolete CONFIG item? */
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#define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
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#ifdef TEST
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#define ENABLE_FEATURE_EDITING 0
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#define ENABLE_FEATURE_TAB_COMPLETION 0
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#define ENABLE_FEATURE_USERNAME_COMPLETION 0
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#define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
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#define ENABLE_FEATURE_CLEAN_UP 0
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#endif /* TEST */
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/* Entire file (except TESTing part) sits inside this #if */
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#if ENABLE_FEATURE_EDITING
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#if ENABLE_LOCALE_SUPPORT
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#define Isprint(c) isprint(c)
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#else
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#define Isprint(c) ((c) >= ' ' && (c) != ((unsigned char)'\233'))
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#endif
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#define ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR \
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(ENABLE_FEATURE_USERNAME_COMPLETION || ENABLE_FEATURE_EDITING_FANCY_PROMPT)
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static line_input_t *state;
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static struct termios initial_settings, new_settings;
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static volatile unsigned cmdedit_termw = 80; /* actual terminal width */
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static int cmdedit_x; /* real x terminal position */
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static int cmdedit_y; /* pseudoreal y terminal position */
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static int cmdedit_prmt_len; /* length of prompt (without colors etc) */
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static unsigned cursor;
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static unsigned command_len;
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static char *command_ps;
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static const char *cmdedit_prompt;
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#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
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static char *hostname_buf;
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static int num_ok_lines = 1;
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#endif
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#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
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static char *user_buf = (char*)"";
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static char *home_pwd_buf = (char*)"";
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#endif
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#if ENABLE_FEATURE_TAB_COMPLETION
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static int my_uid;
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static int my_gid;
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#endif
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/* Put 'command_ps[cursor]', cursor++.
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* Advance cursor on screen. If we reached right margin, scroll text up
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* and remove terminal margin effect by printing 'next_char' */
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static void cmdedit_set_out_char(int next_char)
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{
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int c = (unsigned char)command_ps[cursor];
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if (c == '\0') {
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/* erase character after end of input string */
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c = ' ';
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}
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#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
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/* Display non-printable characters in reverse */
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if (!Isprint(c)) {
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if (c >= 128)
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c -= 128;
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if (c < ' ')
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c += '@';
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if (c == 127)
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c = '?';
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printf("\033[7m%c\033[0m", c);
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} else
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#endif
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{
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if (initial_settings.c_lflag & ECHO)
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putchar(c);
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}
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if (++cmdedit_x >= cmdedit_termw) {
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/* terminal is scrolled down */
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cmdedit_y++;
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cmdedit_x = 0;
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/* destroy "(auto)margin" */
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putchar(next_char);
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putchar('\b');
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}
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// Huh? What if command_ps[cursor] == '\0' (we are at the end already?)
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cursor++;
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}
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/* Move to end of line (by printing all chars till the end) */
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static void input_end(void)
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{
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while (cursor < command_len)
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cmdedit_set_out_char(' ');
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}
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/* Go to the next line */
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static void goto_new_line(void)
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{
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input_end();
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if (cmdedit_x)
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putchar('\n');
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}
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static void out1str(const char *s)
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{
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if (s)
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fputs(s, stdout);
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}
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static void beep(void)
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{
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putchar('\007');
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}
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/* Move back one character */
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/* (optimized for slow terminals) */
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static void input_backward(unsigned num)
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{
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int count_y;
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if (num > cursor)
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num = cursor;
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if (!num)
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return;
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cursor -= num;
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if (cmdedit_x >= num) {
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cmdedit_x -= num;
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if (num <= 4) {
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printf("\b\b\b\b" + (4-num));
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return;
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}
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printf("\033[%uD", num);
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return;
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}
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/* Need to go one or more lines up */
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num -= cmdedit_x;
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count_y = 1 + (num / cmdedit_termw);
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cmdedit_y -= count_y;
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cmdedit_x = cmdedit_termw * count_y - num;
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/* go to 1st column; go up; go to correct column */
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printf("\r" "\033[%dA" "\033[%dC", count_y, cmdedit_x);
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}
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static void put_prompt(void)
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{
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out1str(cmdedit_prompt);
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cmdedit_x = cmdedit_prmt_len;
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cursor = 0;
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// Huh? what if cmdedit_prmt_len >= width?
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cmdedit_y = 0; /* new quasireal y */
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}
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/* draw prompt, editor line, and clear tail */
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static void redraw(int y, int back_cursor)
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{
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if (y > 0) /* up to start y */
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printf("\033[%dA", y);
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putchar('\r');
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put_prompt();
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input_end(); /* rewrite */
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printf("\033[J"); /* erase after cursor */
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input_backward(back_cursor);
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}
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#if ENABLE_FEATURE_EDITING_VI
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#define DELBUFSIZ 128
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static char *delbuf; /* a (malloced) place to store deleted characters */
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static char *delp;
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static char newdelflag; /* whether delbuf should be reused yet */
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#endif
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/* Delete the char in front of the cursor, optionally saving it
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* for later putback */
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static void input_delete(int save)
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{
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int j = cursor;
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if (j == command_len)
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return;
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#if ENABLE_FEATURE_EDITING_VI
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if (save) {
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if (newdelflag) {
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if (!delbuf)
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delbuf = malloc(DELBUFSIZ);
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/* safe if malloc fails */
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delp = delbuf;
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newdelflag = 0;
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}
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if (delbuf && (delp - delbuf < DELBUFSIZ))
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*delp++ = command_ps[j];
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}
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#endif
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strcpy(command_ps + j, command_ps + j + 1);
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command_len--;
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input_end(); /* rewrite new line */
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cmdedit_set_out_char(' '); /* erase char */
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input_backward(cursor - j); /* back to old pos cursor */
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}
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#if ENABLE_FEATURE_EDITING_VI
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static void put(void)
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{
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int ocursor;
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int j = delp - delbuf;
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if (j == 0)
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return;
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ocursor = cursor;
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/* open hole and then fill it */
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memmove(command_ps + cursor + j, command_ps + cursor, command_len - cursor + 1);
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strncpy(command_ps + cursor, delbuf, j);
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command_len += j;
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input_end(); /* rewrite new line */
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input_backward(cursor - ocursor - j + 1); /* at end of new text */
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}
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#endif
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/* Delete the char in back of the cursor */
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static void input_backspace(void)
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{
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if (cursor > 0) {
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input_backward(1);
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input_delete(0);
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}
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}
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/* Move forward one character */
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static void input_forward(void)
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{
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if (cursor < command_len)
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cmdedit_set_out_char(command_ps[cursor + 1]);
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}
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#if ENABLE_FEATURE_TAB_COMPLETION
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static char **matches;
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static unsigned num_matches;
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static void free_tab_completion_data(void)
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{
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if (matches) {
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while (num_matches)
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free(matches[--num_matches]);
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free(matches);
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matches = NULL;
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}
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}
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static void add_match(char *matched)
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{
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int nm = num_matches;
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int nm1 = nm + 1;
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matches = xrealloc(matches, nm1 * sizeof(char *));
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matches[nm] = matched;
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num_matches++;
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}
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#if ENABLE_FEATURE_USERNAME_COMPLETION
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static void username_tab_completion(char *ud, char *with_shash_flg)
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{
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struct passwd *entry;
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int userlen;
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ud++; /* ~user/... to user/... */
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userlen = strlen(ud);
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if (with_shash_flg) { /* "~/..." or "~user/..." */
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char *sav_ud = ud - 1;
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char *home = 0;
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char *temp;
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if (*ud == '/') { /* "~/..." */
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home = home_pwd_buf;
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} else {
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/* "~user/..." */
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temp = strchr(ud, '/');
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*temp = 0; /* ~user\0 */
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entry = getpwnam(ud);
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*temp = '/'; /* restore ~user/... */
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ud = temp;
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if (entry)
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home = entry->pw_dir;
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}
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if (home) {
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if ((userlen + strlen(home) + 1) < BUFSIZ) {
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char temp2[BUFSIZ]; /* argument size */
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/* /home/user/... */
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sprintf(temp2, "%s%s", home, ud);
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strcpy(sav_ud, temp2);
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}
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}
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} else {
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/* "~[^/]*" */
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setpwent();
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while ((entry = getpwent()) != NULL) {
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/* Null usernames should result in all users as possible completions. */
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if ( /*!userlen || */ !strncmp(ud, entry->pw_name, userlen)) {
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add_match(xasprintf("~%s/", entry->pw_name));
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}
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}
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endpwent();
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}
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}
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#endif /* FEATURE_COMMAND_USERNAME_COMPLETION */
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enum {
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FIND_EXE_ONLY = 0,
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FIND_DIR_ONLY = 1,
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FIND_FILE_ONLY = 2,
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};
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static int path_parse(char ***p, int flags)
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{
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int npth;
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const char *pth;
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char *tmp;
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char **res;
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/* if not setenv PATH variable, to search cur dir "." */
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if (flags != FIND_EXE_ONLY)
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return 1;
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if (state->flags & WITH_PATH_LOOKUP)
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pth = state->path_lookup;
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else
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pth = getenv("PATH");
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/* PATH=<empty> or PATH=:<empty> */
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if (!pth || !pth[0] || LONE_CHAR(pth, ':'))
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return 1;
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tmp = (char*)pth;
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npth = 1; /* path component count */
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while (1) {
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tmp = strchr(tmp, ':');
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if (!tmp)
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break;
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if (*++tmp == '\0')
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break; /* :<empty> */
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npth++;
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}
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res = xmalloc(npth * sizeof(char*));
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res[0] = tmp = xstrdup(pth);
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npth = 1;
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while (1) {
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tmp = strchr(tmp, ':');
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if (!tmp)
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break;
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*tmp++ = '\0'; /* ':' -> '\0' */
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if (*tmp == '\0')
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break; /* :<empty> */
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res[npth++] = tmp;
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}
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*p = res;
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return npth;
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}
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static void exe_n_cwd_tab_completion(char *command, int type)
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{
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DIR *dir;
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struct dirent *next;
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char dirbuf[BUFSIZ];
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struct stat st;
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char *path1[1];
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char **paths = path1;
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int npaths;
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int i;
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char *found;
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char *pfind = strrchr(command, '/');
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npaths = 1;
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path1[0] = (char*)".";
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if (pfind == NULL) {
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/* no dir, if flags==EXE_ONLY - get paths, else "." */
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npaths = path_parse(&paths, type);
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pfind = command;
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} else {
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/* dirbuf = ".../.../.../" */
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safe_strncpy(dirbuf, command, (pfind - command) + 2);
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#if ENABLE_FEATURE_USERNAME_COMPLETION
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if (dirbuf[0] == '~') /* ~/... or ~user/... */
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username_tab_completion(dirbuf, dirbuf);
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#endif
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paths[0] = dirbuf;
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/* point to 'l' in "..../last_component" */
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pfind++;
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}
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for (i = 0; i < npaths; i++) {
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dir = opendir(paths[i]);
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if (!dir) /* Don't print an error */
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continue;
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while ((next = readdir(dir)) != NULL) {
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int len1;
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const char *str_found = next->d_name;
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/* matched? */
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if (strncmp(str_found, pfind, strlen(pfind)))
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continue;
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/* not see .name without .match */
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if (*str_found == '.' && *pfind == 0) {
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if (NOT_LONE_CHAR(paths[i], '/') || str_found[1])
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continue;
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str_found = ""; /* only "/" */
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}
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found = concat_path_file(paths[i], str_found);
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/* hmm, remover in progress? */
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if (stat(found, &st) < 0)
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goto cont;
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/* find with dirs? */
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if (paths[i] != dirbuf)
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strcpy(found, next->d_name); /* only name */
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len1 = strlen(found);
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found = xrealloc(found, len1 + 2);
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found[len1] = '\0';
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found[len1+1] = '\0';
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|
|
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if (S_ISDIR(st.st_mode)) {
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/* name is directory */
|
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if (found[len1-1] != '/') {
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found[len1] = '/';
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}
|
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} else {
|
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/* not put found file if search only dirs for cd */
|
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if (type == FIND_DIR_ONLY)
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goto cont;
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}
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/* Add it to the list */
|
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add_match(found);
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continue;
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cont:
|
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free(found);
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}
|
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closedir(dir);
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}
|
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if (paths != path1) {
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free(paths[0]); /* allocated memory only in first member */
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free(paths);
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}
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|
}
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|
|
#define QUOT (UCHAR_MAX+1)
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|
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#define collapse_pos(is, in) { \
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|
memmove(int_buf+(is), int_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); \
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memmove(pos_buf+(is), pos_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); }
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|
|
|
static int find_match(char *matchBuf, int *len_with_quotes)
|
|
{
|
|
int i, j;
|
|
int command_mode;
|
|
int c, c2;
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|
int int_buf[BUFSIZ + 1];
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|
int pos_buf[BUFSIZ + 1];
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|
|
/* set to integer dimension characters and own positions */
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for (i = 0;; i++) {
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int_buf[i] = (unsigned char)matchBuf[i];
|
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if (int_buf[i] == 0) {
|
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pos_buf[i] = -1; /* indicator end line */
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break;
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}
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pos_buf[i] = i;
|
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}
|
|
|
|
/* mask \+symbol and convert '\t' to ' ' */
|
|
for (i = j = 0; matchBuf[i]; i++, j++)
|
|
if (matchBuf[i] == '\\') {
|
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collapse_pos(j, j + 1);
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int_buf[j] |= QUOT;
|
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i++;
|
|
#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
|
if (matchBuf[i] == '\t') /* algorithm equivalent */
|
|
int_buf[j] = ' ' | QUOT;
|
|
#endif
|
|
}
|
|
#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
|
else if (matchBuf[i] == '\t')
|
|
int_buf[j] = ' ';
|
|
#endif
|
|
|
|
/* mask "symbols" or 'symbols' */
|
|
c2 = 0;
|
|
for (i = 0; int_buf[i]; i++) {
|
|
c = int_buf[i];
|
|
if (c == '\'' || c == '"') {
|
|
if (c2 == 0)
|
|
c2 = c;
|
|
else {
|
|
if (c == c2)
|
|
c2 = 0;
|
|
else
|
|
int_buf[i] |= QUOT;
|
|
}
|
|
} else if (c2 != 0 && c != '$')
|
|
int_buf[i] |= QUOT;
|
|
}
|
|
|
|
/* skip commands with arguments if line has commands delimiters */
|
|
/* ';' ';;' '&' '|' '&&' '||' but `>&' `<&' `>|' */
|
|
for (i = 0; int_buf[i]; i++) {
|
|
c = int_buf[i];
|
|
c2 = int_buf[i + 1];
|
|
j = i ? int_buf[i - 1] : -1;
|
|
command_mode = 0;
|
|
if (c == ';' || c == '&' || c == '|') {
|
|
command_mode = 1 + (c == c2);
|
|
if (c == '&') {
|
|
if (j == '>' || j == '<')
|
|
command_mode = 0;
|
|
} else if (c == '|' && j == '>')
|
|
command_mode = 0;
|
|
}
|
|
if (command_mode) {
|
|
collapse_pos(0, i + command_mode);
|
|
i = -1; /* hack incremet */
|
|
}
|
|
}
|
|
/* collapse `command...` */
|
|
for (i = 0; int_buf[i]; i++)
|
|
if (int_buf[i] == '`') {
|
|
for (j = i + 1; int_buf[j]; j++)
|
|
if (int_buf[j] == '`') {
|
|
collapse_pos(i, j + 1);
|
|
j = 0;
|
|
break;
|
|
}
|
|
if (j) {
|
|
/* not found close ` - command mode, collapse all previous */
|
|
collapse_pos(0, i + 1);
|
|
break;
|
|
} else
|
|
i--; /* hack incremet */
|
|
}
|
|
|
|
/* collapse (command...(command...)...) or {command...{command...}...} */
|
|
c = 0; /* "recursive" level */
|
|
c2 = 0;
|
|
for (i = 0; int_buf[i]; i++)
|
|
if (int_buf[i] == '(' || int_buf[i] == '{') {
|
|
if (int_buf[i] == '(')
|
|
c++;
|
|
else
|
|
c2++;
|
|
collapse_pos(0, i + 1);
|
|
i = -1; /* hack incremet */
|
|
}
|
|
for (i = 0; pos_buf[i] >= 0 && (c > 0 || c2 > 0); i++)
|
|
if ((int_buf[i] == ')' && c > 0) || (int_buf[i] == '}' && c2 > 0)) {
|
|
if (int_buf[i] == ')')
|
|
c--;
|
|
else
|
|
c2--;
|
|
collapse_pos(0, i + 1);
|
|
i = -1; /* hack incremet */
|
|
}
|
|
|
|
/* skip first not quote space */
|
|
for (i = 0; int_buf[i]; i++)
|
|
if (int_buf[i] != ' ')
|
|
break;
|
|
if (i)
|
|
collapse_pos(0, i);
|
|
|
|
/* set find mode for completion */
|
|
command_mode = FIND_EXE_ONLY;
|
|
for (i = 0; int_buf[i]; i++)
|
|
if (int_buf[i] == ' ' || int_buf[i] == '<' || int_buf[i] == '>') {
|
|
if (int_buf[i] == ' ' && command_mode == FIND_EXE_ONLY
|
|
&& matchBuf[pos_buf[0]]=='c'
|
|
&& matchBuf[pos_buf[1]]=='d'
|
|
) {
|
|
command_mode = FIND_DIR_ONLY;
|
|
} else {
|
|
command_mode = FIND_FILE_ONLY;
|
|
break;
|
|
}
|
|
}
|
|
for (i = 0; int_buf[i]; i++)
|
|
/* "strlen" */;
|
|
/* find last word */
|
|
for (--i; i >= 0; i--) {
|
|
c = int_buf[i];
|
|
if (c == ' ' || c == '<' || c == '>' || c == '|' || c == '&') {
|
|
collapse_pos(0, i + 1);
|
|
break;
|
|
}
|
|
}
|
|
/* skip first not quoted '\'' or '"' */
|
|
for (i = 0; int_buf[i] == '\'' || int_buf[i] == '"'; i++)
|
|
/*skip*/;
|
|
/* collapse quote or unquote // or /~ */
|
|
while ((int_buf[i] & ~QUOT) == '/'
|
|
&& ((int_buf[i+1] & ~QUOT) == '/' || (int_buf[i+1] & ~QUOT) == '~')
|
|
) {
|
|
i++;
|
|
}
|
|
|
|
/* set only match and destroy quotes */
|
|
j = 0;
|
|
for (c = 0; pos_buf[i] >= 0; i++) {
|
|
matchBuf[c++] = matchBuf[pos_buf[i]];
|
|
j = pos_buf[i] + 1;
|
|
}
|
|
matchBuf[c] = 0;
|
|
/* old lenght matchBuf with quotes symbols */
|
|
*len_with_quotes = j ? j - pos_buf[0] : 0;
|
|
|
|
return command_mode;
|
|
}
|
|
|
|
/*
|
|
* display by column (original idea from ls applet,
|
|
* very optimized by me :)
|
|
*/
|
|
static void showfiles(void)
|
|
{
|
|
int ncols, row;
|
|
int column_width = 0;
|
|
int nfiles = num_matches;
|
|
int nrows = nfiles;
|
|
int l;
|
|
|
|
/* find the longest file name- use that as the column width */
|
|
for (row = 0; row < nrows; row++) {
|
|
l = strlen(matches[row]);
|
|
if (column_width < l)
|
|
column_width = l;
|
|
}
|
|
column_width += 2; /* min space for columns */
|
|
ncols = cmdedit_termw / column_width;
|
|
|
|
if (ncols > 1) {
|
|
nrows /= ncols;
|
|
if (nfiles % ncols)
|
|
nrows++; /* round up fractionals */
|
|
} else {
|
|
ncols = 1;
|
|
}
|
|
for (row = 0; row < nrows; row++) {
|
|
int n = row;
|
|
int nc;
|
|
|
|
for (nc = 1; nc < ncols && n+nrows < nfiles; n += nrows, nc++) {
|
|
printf("%s%-*s", matches[n],
|
|
(int)(column_width - strlen(matches[n])), "");
|
|
}
|
|
printf("%s\n", matches[n]);
|
|
}
|
|
}
|
|
|
|
static char *add_quote_for_spec_chars(char *found)
|
|
{
|
|
int l = 0;
|
|
char *s = xmalloc((strlen(found) + 1) * 2);
|
|
|
|
while (*found) {
|
|
if (strchr(" `\"#$%^&*()=+{}[]:;\'|\\<>", *found))
|
|
s[l++] = '\\';
|
|
s[l++] = *found++;
|
|
}
|
|
s[l] = 0;
|
|
return s;
|
|
}
|
|
|
|
static int match_compare(const void *a, const void *b)
|
|
{
|
|
return strcmp(*(char**)a, *(char**)b);
|
|
}
|
|
|
|
/* 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[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 */
|
|
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 */
|
|
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) < 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 */
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
#else
|
|
#define input_tab(a) ((void)0)
|
|
#endif /* FEATURE_COMMAND_TAB_COMPLETION */
|
|
|
|
|
|
#if MAX_HISTORY > 0
|
|
|
|
/* state->flags is already checked to be nonzero */
|
|
static void get_previous_history(void)
|
|
{
|
|
if (command_ps[0] != '\0' || state->history[state->cur_history] == NULL) {
|
|
free(state->history[state->cur_history]);
|
|
state->history[state->cur_history] = xstrdup(command_ps);
|
|
}
|
|
state->cur_history--;
|
|
}
|
|
|
|
static int get_next_history(void)
|
|
{
|
|
if (state->flags & DO_HISTORY) {
|
|
int ch = state->cur_history;
|
|
if (ch < state->cnt_history) {
|
|
get_previous_history(); /* save the current history line */
|
|
state->cur_history = ch + 1;
|
|
return state->cur_history;
|
|
}
|
|
}
|
|
beep();
|
|
return 0;
|
|
}
|
|
|
|
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
|
|
/* state->flags is already checked to be nonzero */
|
|
static void load_history(const char *fromfile)
|
|
{
|
|
FILE *fp;
|
|
int hi;
|
|
|
|
/* cleanup old */
|
|
for (hi = state->cnt_history; hi > 0;) {
|
|
hi--;
|
|
free(state->history[hi]);
|
|
}
|
|
|
|
fp = fopen(fromfile, "r");
|
|
if (fp) {
|
|
for (hi = 0; hi < MAX_HISTORY;) {
|
|
char * hl = xmalloc_getline(fp);
|
|
int l;
|
|
|
|
if (!hl)
|
|
break;
|
|
l = strlen(hl);
|
|
if (l >= BUFSIZ)
|
|
hl[BUFSIZ-1] = 0;
|
|
if (l == 0 || hl[0] == ' ') {
|
|
free(hl);
|
|
continue;
|
|
}
|
|
state->history[hi++] = hl;
|
|
}
|
|
fclose(fp);
|
|
}
|
|
state->cur_history = state->cnt_history = hi;
|
|
}
|
|
|
|
/* state->flags is already checked to be nonzero */
|
|
static void save_history(const char *tofile)
|
|
{
|
|
FILE *fp;
|
|
|
|
fp = fopen(tofile, "w");
|
|
if (fp) {
|
|
int i;
|
|
|
|
for (i = 0; i < state->cnt_history; i++) {
|
|
fprintf(fp, "%s\n", state->history[i]);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
}
|
|
#else
|
|
#define load_history(a) ((void)0)
|
|
#define save_history(a) ((void)0)
|
|
#endif /* FEATURE_COMMAND_SAVEHISTORY */
|
|
|
|
static void remember_in_history(const char *str)
|
|
{
|
|
int i;
|
|
|
|
if (!(state->flags & DO_HISTORY))
|
|
return;
|
|
|
|
i = state->cnt_history;
|
|
free(state->history[MAX_HISTORY]);
|
|
state->history[MAX_HISTORY] = NULL;
|
|
/* After max history, remove the oldest command */
|
|
if (i >= MAX_HISTORY) {
|
|
free(state->history[0]);
|
|
for (i = 0; i < MAX_HISTORY-1; i++)
|
|
state->history[i] = state->history[i+1];
|
|
}
|
|
// Maybe "if (!i || strcmp(history[i-1], command) != 0) ..."
|
|
// (i.e. do not save dups?)
|
|
state->history[i++] = xstrdup(str);
|
|
state->cur_history = i;
|
|
state->cnt_history = i;
|
|
if (state->flags & SAVE_HISTORY)
|
|
save_history(state->hist_file);
|
|
USE_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines++;)
|
|
}
|
|
|
|
#else /* MAX_HISTORY == 0 */
|
|
#define remember_in_history(a) ((void)0)
|
|
#endif /* MAX_HISTORY */
|
|
|
|
|
|
/*
|
|
* This function is used to grab a character buffer
|
|
* from the input file descriptor and allows you to
|
|
* a string with full command editing (sort of like
|
|
* a mini readline).
|
|
*
|
|
* The following standard commands are not implemented:
|
|
* ESC-b -- Move back one word
|
|
* ESC-f -- Move forward one word
|
|
* ESC-d -- Delete back one word
|
|
* ESC-h -- Delete forward one word
|
|
* CTL-t -- Transpose two characters
|
|
*
|
|
* Minimalist vi-style command line editing available if configured.
|
|
* vi mode implemented 2005 by Paul Fox <pgf@foxharp.boston.ma.us>
|
|
*/
|
|
|
|
#if ENABLE_FEATURE_EDITING_VI
|
|
static void
|
|
vi_Word_motion(char *command, int eat)
|
|
{
|
|
while (cursor < command_len && !isspace(command[cursor]))
|
|
input_forward();
|
|
if (eat) while (cursor < command_len && isspace(command[cursor]))
|
|
input_forward();
|
|
}
|
|
|
|
static void
|
|
vi_word_motion(char *command, int eat)
|
|
{
|
|
if (isalnum(command[cursor]) || command[cursor] == '_') {
|
|
while (cursor < command_len
|
|
&& (isalnum(command[cursor+1]) || command[cursor+1] == '_'))
|
|
input_forward();
|
|
} else if (ispunct(command[cursor])) {
|
|
while (cursor < command_len && ispunct(command[cursor+1]))
|
|
input_forward();
|
|
}
|
|
|
|
if (cursor < command_len)
|
|
input_forward();
|
|
|
|
if (eat && cursor < command_len && isspace(command[cursor]))
|
|
while (cursor < command_len && isspace(command[cursor]))
|
|
input_forward();
|
|
}
|
|
|
|
static void
|
|
vi_End_motion(char *command)
|
|
{
|
|
input_forward();
|
|
while (cursor < command_len && isspace(command[cursor]))
|
|
input_forward();
|
|
while (cursor < command_len-1 && !isspace(command[cursor+1]))
|
|
input_forward();
|
|
}
|
|
|
|
static void
|
|
vi_end_motion(char *command)
|
|
{
|
|
if (cursor >= command_len-1)
|
|
return;
|
|
input_forward();
|
|
while (cursor < command_len-1 && isspace(command[cursor]))
|
|
input_forward();
|
|
if (cursor >= command_len-1)
|
|
return;
|
|
if (isalnum(command[cursor]) || command[cursor] == '_') {
|
|
while (cursor < command_len-1
|
|
&& (isalnum(command[cursor+1]) || command[cursor+1] == '_')
|
|
) {
|
|
input_forward();
|
|
}
|
|
} else if (ispunct(command[cursor])) {
|
|
while (cursor < command_len-1 && ispunct(command[cursor+1]))
|
|
input_forward();
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* read_line_input and its helpers
|
|
*/
|
|
|
|
#if !ENABLE_FEATURE_EDITING_FANCY_PROMPT
|
|
static void parse_prompt(const char *prmt_ptr)
|
|
{
|
|
cmdedit_prompt = prmt_ptr;
|
|
cmdedit_prmt_len = strlen(prmt_ptr);
|
|
put_prompt();
|
|
}
|
|
#else
|
|
static void parse_prompt(const char *prmt_ptr)
|
|
{
|
|
int prmt_len = 0;
|
|
size_t cur_prmt_len = 0;
|
|
char flg_not_length = '[';
|
|
char *prmt_mem_ptr = xzalloc(1);
|
|
char *pwd_buf = xgetcwd(0);
|
|
char buf2[PATH_MAX + 1];
|
|
char buf[2];
|
|
char c;
|
|
char *pbuf;
|
|
|
|
cmdedit_prmt_len = 0;
|
|
|
|
if (!pwd_buf) {
|
|
pwd_buf = (char *)bb_msg_unknown;
|
|
}
|
|
|
|
while (*prmt_ptr) {
|
|
pbuf = buf;
|
|
pbuf[1] = 0;
|
|
c = *prmt_ptr++;
|
|
if (c == '\\') {
|
|
const char *cp = prmt_ptr;
|
|
int l;
|
|
|
|
c = bb_process_escape_sequence(&prmt_ptr);
|
|
if (prmt_ptr == cp) {
|
|
if (*cp == 0)
|
|
break;
|
|
c = *prmt_ptr++;
|
|
switch (c) {
|
|
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
|
|
case 'u':
|
|
pbuf = user_buf;
|
|
break;
|
|
#endif
|
|
case 'h':
|
|
pbuf = hostname_buf;
|
|
if (!pbuf) {
|
|
pbuf = xzalloc(256);
|
|
if (gethostname(pbuf, 255) < 0) {
|
|
strcpy(pbuf, "?");
|
|
} else {
|
|
char *s = strchr(pbuf, '.');
|
|
if (s)
|
|
*s = '\0';
|
|
}
|
|
hostname_buf = pbuf;
|
|
}
|
|
break;
|
|
case '$':
|
|
c = (geteuid() == 0 ? '#' : '$');
|
|
break;
|
|
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
|
|
case 'w':
|
|
pbuf = pwd_buf;
|
|
l = strlen(home_pwd_buf);
|
|
if (home_pwd_buf[0] != 0
|
|
&& strncmp(home_pwd_buf, pbuf, l) == 0
|
|
&& (pbuf[l]=='/' || pbuf[l]=='\0')
|
|
&& strlen(pwd_buf+l)<PATH_MAX
|
|
) {
|
|
pbuf = buf2;
|
|
*pbuf = '~';
|
|
strcpy(pbuf+1, pwd_buf+l);
|
|
}
|
|
break;
|
|
#endif
|
|
case 'W':
|
|
pbuf = pwd_buf;
|
|
cp = strrchr(pbuf,'/');
|
|
if (cp != NULL && cp != pbuf)
|
|
pbuf += (cp-pbuf) + 1;
|
|
break;
|
|
case '!':
|
|
pbuf = buf2;
|
|
snprintf(buf2, sizeof(buf2), "%d", num_ok_lines);
|
|
break;
|
|
case 'e': case 'E': /* \e \E = \033 */
|
|
c = '\033';
|
|
break;
|
|
case 'x': case 'X':
|
|
for (l = 0; l < 3;) {
|
|
int h;
|
|
buf2[l++] = *prmt_ptr;
|
|
buf2[l] = 0;
|
|
h = strtol(buf2, &pbuf, 16);
|
|
if (h > UCHAR_MAX || (pbuf - buf2) < l) {
|
|
l--;
|
|
break;
|
|
}
|
|
prmt_ptr++;
|
|
}
|
|
buf2[l] = 0;
|
|
c = (char)strtol(buf2, NULL, 16);
|
|
if (c == 0)
|
|
c = '?';
|
|
pbuf = buf;
|
|
break;
|
|
case '[': case ']':
|
|
if (c == flg_not_length) {
|
|
flg_not_length = flg_not_length == '[' ? ']' : '[';
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (pbuf == buf)
|
|
*pbuf = c;
|
|
cur_prmt_len = strlen(pbuf);
|
|
prmt_len += cur_prmt_len;
|
|
if (flg_not_length != ']')
|
|
cmdedit_prmt_len += cur_prmt_len;
|
|
prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_len+1), pbuf);
|
|
}
|
|
if (pwd_buf != (char *)bb_msg_unknown)
|
|
free(pwd_buf);
|
|
cmdedit_prompt = prmt_mem_ptr;
|
|
put_prompt();
|
|
}
|
|
#endif
|
|
|
|
#define setTermSettings(fd, argp) tcsetattr(fd, TCSANOW, argp)
|
|
#define getTermSettings(fd, argp) tcgetattr(fd, argp);
|
|
|
|
static sighandler_t previous_SIGWINCH_handler;
|
|
|
|
static void cmdedit_setwidth(unsigned w, int redraw_flg)
|
|
{
|
|
cmdedit_termw = w;
|
|
if (redraw_flg) {
|
|
/* new y for current cursor */
|
|
int new_y = (cursor + cmdedit_prmt_len) / w;
|
|
/* redraw */
|
|
redraw((new_y >= cmdedit_y ? new_y : cmdedit_y), command_len - cursor);
|
|
fflush(stdout);
|
|
}
|
|
}
|
|
|
|
static void win_changed(int nsig)
|
|
{
|
|
int width;
|
|
get_terminal_width_height(0, &width, NULL);
|
|
cmdedit_setwidth(width, nsig /* - just a yes/no flag */);
|
|
if (nsig == SIGWINCH)
|
|
signal(SIGWINCH, win_changed); /* rearm ourself */
|
|
}
|
|
|
|
/*
|
|
* The emacs and vi modes share much of the code in the big
|
|
* command loop. Commands entered when in vi's command mode (aka
|
|
* "escape mode") get an extra bit added to distinguish them --
|
|
* this keeps them from being self-inserted. This clutters the
|
|
* big switch a bit, but keeps all the code in one place.
|
|
*/
|
|
|
|
#define vbit 0x100
|
|
|
|
/* leave out the "vi-mode"-only case labels if vi editing isn't
|
|
* configured. */
|
|
#define vi_case(caselabel) USE_FEATURE_EDITING(case caselabel)
|
|
|
|
/* convert uppercase ascii to equivalent control char, for readability */
|
|
#undef CTRL
|
|
#define CTRL(a) ((a) & ~0x40)
|
|
|
|
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
|
|
|
|
// FIXME: audit & improve this
|
|
if (maxsize > BUFSIZ)
|
|
maxsize = BUFSIZ;
|
|
|
|
/* 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)
|
|
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) {
|
|
user_buf = xstrdup(entry->pw_name);
|
|
home_pwd_buf = xstrdup(entry->pw_dir);
|
|
}
|
|
}
|
|
#endif
|
|
#if ENABLE_FEATURE_TAB_COMPLETION
|
|
my_uid = getuid();
|
|
my_gid = getgid();
|
|
#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':
|
|
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 == 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;
|
|
}
|
|
|
|
if (command_len > 0)
|
|
remember_in_history(command);
|
|
|
|
if (break_out > 0) {
|
|
command[command_len++] = '\n';
|
|
command[command_len] = '\0';
|
|
}
|
|
|
|
#if ENABLE_FEATURE_CLEAN_UP && ENABLE_FEATURE_TAB_COMPLETION
|
|
free_tab_completion_data();
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
|
|
free((char*)cmdedit_prompt);
|
|
#endif
|
|
/* restore initial_settings */
|
|
setTermSettings(STDIN_FILENO, (void *) &initial_settings);
|
|
/* restore SIGWINCH handler */
|
|
signal(SIGWINCH, previous_SIGWINCH_handler);
|
|
fflush(stdout);
|
|
return command_len;
|
|
}
|
|
|
|
line_input_t *new_line_input_t(int flags)
|
|
{
|
|
line_input_t *n = xzalloc(sizeof(*n));
|
|
n->flags = flags;
|
|
return n;
|
|
}
|
|
|
|
#else
|
|
|
|
#undef read_line_input
|
|
int read_line_input(const char* prompt, char* command, int maxsize)
|
|
{
|
|
fputs(prompt, stdout);
|
|
fflush(stdout);
|
|
fgets(command, maxsize, stdin);
|
|
return strlen(command);
|
|
}
|
|
|
|
#endif /* FEATURE_COMMAND_EDITING */
|
|
|
|
|
|
/*
|
|
* Testing
|
|
*/
|
|
|
|
#ifdef TEST
|
|
|
|
#include <locale.h>
|
|
|
|
const char *applet_name = "debug stuff usage";
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
char buff[BUFSIZ];
|
|
char *prompt =
|
|
#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
|
|
"\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:"
|
|
"\\[\\033[34;1m\\]\\w\\[\\033[35;1m\\] "
|
|
"\\!\\[\\e[36;1m\\]\\$ \\[\\E[0m\\]";
|
|
#else
|
|
"% ";
|
|
#endif
|
|
|
|
#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
|
|
setlocale(LC_ALL, "");
|
|
#endif
|
|
while (1) {
|
|
int l;
|
|
l = read_line_input(prompt, buff);
|
|
if (l <= 0 || buff[l-1] != '\n')
|
|
break;
|
|
buff[l-1] = 0;
|
|
printf("*** read_line_input() returned line =%s=\n", buff);
|
|
}
|
|
printf("*** read_line_input() detect ^D\n");
|
|
return 0;
|
|
}
|
|
|
|
#endif /* TEST */
|