/* vi: set sw=4 ts=4: */
/*
- * Termios command line History and Editting.
+ * Termios command line History and Editing.
*
- * Copyright (c) 1986-2001 may safely be consumed by a BSD or GPL license.
+ * Copyright (c) 1986-2003 may safely be consumed by a BSD or GPL license.
* Written by: Vladimir Oleynik <dzo@simtreas.ru>
*
* Used ideas:
* Adam Rogoyski <rogoyski@cs.utexas.edu>
* Dave Cinege <dcinege@psychosis.com>
* Jakub Jelinek (c) 1995
- * Erik Andersen <andersee@debian.org> (Majorly adjusted for busybox)
+ * Erik Andersen <andersen@codepoet.org> (Majorly adjusted for busybox)
*
* This code is 'as is' with no warranty.
- *
- *
*/
/*
- Usage and Known bugs:
+ Usage and known bugs:
Terminal key codes are not extensive, and more will probably
need to be added. This version was created on Debian GNU/Linux 2.x.
Delete, Backspace, Home, End, and the arrow keys were tested
- not true viewing if length prompt less terminal width
*/
-
-#include <stdio.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <ctype.h>
-#include <signal.h>
-#include <limits.h>
-
#include "busybox.h"
+#include <sys/ioctl.h>
-#ifdef CONFIG_LOCALE_SUPPORT
-#define Isprint(c) isprint((c))
-#else
-#define Isprint(c) ( (c) >= ' ' && (c) != ((unsigned char)'\233') )
-#endif
-
-#ifndef TEST
+#include "cmdedit.h"
-#define D(x)
+#if ENABLE_LOCALE_SUPPORT
+#define Isprint(c) isprint(c)
#else
+#define Isprint(c) ((c) >= ' ' && (c) != ((unsigned char)'\233'))
+#endif
-#define CONFIG_FEATURE_COMMAND_EDITING
-#define CONFIG_FEATURE_COMMAND_TAB_COMPLETION
-#define CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
-#define CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
-#define CONFIG_FEATURE_CLEAN_UP
-#define D(x) x
+/* FIXME: obsolete CONFIG item? */
+#define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
-#endif /* TEST */
-#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
-#include <dirent.h>
-#include <sys/stat.h>
-#endif
+#ifdef TEST
-#ifdef CONFIG_FEATURE_COMMAND_EDITING
+#define ENABLE_FEATURE_COMMAND_EDITING 0
+#define ENABLE_FEATURE_COMMAND_TAB_COMPLETION 0
+#define ENABLE_FEATURE_COMMAND_USERNAME_COMPLETION 0
+#define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
+#define ENABLE_FEATURE_CLEAN_UP 0
-#ifndef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
-#undef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
-#endif
+#endif /* TEST */
-#if defined(CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION) || defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
-#define CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
-#endif
-#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
-# ifndef TEST
-# include "pwd_.h"
-# else
-# include <pwd.h>
-# endif /* TEST */
-#endif /* advanced FEATURES */
+#if ENABLE_FEATURE_COMMAND_EDITING
+#define ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR \
+(ENABLE_FEATURE_COMMAND_USERNAME_COMPLETION || ENABLE_FEATURE_SH_FANCY_PROMPT)
/* Maximum length of the linked list for the command line history */
-#define MAX_HISTORY 15
-#if MAX_HISTORY < 1
-#warning cmdedit: You set MAX_HISTORY < 1. The history algorithm switched off.
+#if !ENABLE_FEATURE_COMMAND_HISTORY
+#define MAX_HISTORY 15
#else
+#define MAX_HISTORY (CONFIG_FEATURE_COMMAND_HISTORY + 0)
+#endif
+
+#if MAX_HISTORY > 0
static char *history[MAX_HISTORY+1]; /* history + current */
/* saved history lines */
static int n_history;
static int cur_history;
#endif
-#include <termios.h>
-#define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp)
+#define setTermSettings(fd,argp) tcsetattr(fd, TCSANOW, argp)
#define getTermSettings(fd,argp) tcgetattr(fd, argp);
/* Current termio and the previous termio before starting sh */
static
-volatile int cmdedit_termw = 80; /* actual terminal width */
+volatile int cmdedit_termw = 80; /* actual terminal width */
static
-volatile int handlers_sets = 0; /* Set next bites: */
+volatile int handlers_sets = 0; /* Set next bites: */
enum {
- SET_ATEXIT = 1, /* when atexit() has been called
+ SET_ATEXIT = 1, /* when atexit() has been called
and get euid,uid,gid to fast compare */
SET_WCHG_HANDLERS = 2, /* winchg signal handler */
SET_RESET_TERM = 4, /* if the terminal needs to be reset upon exit */
};
-static int cmdedit_x; /* real x terminal position */
-static int cmdedit_y; /* pseudoreal y terminal position */
-static int cmdedit_prmt_len; /* lenght prompt without colores string */
+static int cmdedit_x; /* real x terminal position */
+static int cmdedit_y; /* pseudoreal y terminal position */
+static int cmdedit_prmt_len; /* lenght prompt without colores string */
-static int cursor; /* required global for signal handler */
-static int len; /* --- "" - - "" - -"- --""-- --""--- */
-static char *command_ps; /* --- "" - - "" - -"- --""-- --""--- */
-static
-#ifndef CONFIG_FEATURE_SH_FANCY_PROMPT
- const
-#endif
-char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */
+static int cursor; /* required globals for signal handler */
+static int len; /* --- "" - - "" -- -"- --""-- --""--- */
+static char *command_ps; /* --- "" - - "" -- -"- --""-- --""--- */
+static SKIP_FEATURE_SH_FANCY_PROMPT(const) char *cmdedit_prompt; /* -- */
-#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
+#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
static char *user_buf = "";
static char *home_pwd_buf = "";
static int my_euid;
#endif
-#ifdef CONFIG_FEATURE_SH_FANCY_PROMPT
+#if ENABLE_FEATURE_SH_FANCY_PROMPT
static char *hostname_buf;
static int num_ok_lines = 1;
#endif
-#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
+#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
-#ifndef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
+#if !ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
static int my_euid;
#endif
static int my_uid;
static int my_gid;
-#endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
-
-/* It seems that libc5 doesn't know what a sighandler_t is... */
-#if (__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1)
-typedef void (*sighandler_t) (int);
-#endif
+#endif /* FEATURE_COMMAND_TAB_COMPLETION */
static void cmdedit_setwidth(int w, int redraw_flg);
static void win_changed(int nsig)
{
- struct winsize win = { 0, 0, 0, 0 };
- static sighandler_t previous_SIGWINCH_handler; /* for reset */
+ static sighandler_t previous_SIGWINCH_handler; /* for reset */
- /* emulate || signal call */
+ /* emulate || signal call */
if (nsig == -SIGWINCH || nsig == SIGWINCH) {
- ioctl(0, TIOCGWINSZ, &win);
- if (win.ws_col > 0) {
- cmdedit_setwidth(win.ws_col, nsig == SIGWINCH);
- }
+ int width = 0;
+ get_terminal_width_height(0, &width, NULL);
+ cmdedit_setwidth(width, nsig == SIGWINCH);
}
- /* Unix not all standart in recall signal */
+ /* Unix not all standard in recall signal */
- if (nsig == -SIGWINCH) /* save previous handler */
+ if (nsig == -SIGWINCH) /* save previous handler */
previous_SIGWINCH_handler = signal(SIGWINCH, win_changed);
- else if (nsig == SIGWINCH) /* signaled called handler */
- signal(SIGWINCH, win_changed); /* set for next call */
- else /* nsig == 0 */
+ else if (nsig == SIGWINCH) /* signaled called handler */
+ signal(SIGWINCH, win_changed); /* set for next call */
+ else /* nsig == 0 */
/* set previous handler */
- signal(SIGWINCH, previous_SIGWINCH_handler); /* reset */
+ signal(SIGWINCH, previous_SIGWINCH_handler); /* reset */
}
static void cmdedit_reset_term(void)
{
- if ((handlers_sets & SET_RESET_TERM) != 0) {
+ if (handlers_sets & SET_RESET_TERM) {
/* sparc and other have broken termios support: use old termio handling. */
- setTermSettings(fileno(stdin), (void *) &initial_settings);
+ setTermSettings(STDIN_FILENO, (void *) &initial_settings);
handlers_sets &= ~SET_RESET_TERM;
}
- if ((handlers_sets & SET_WCHG_HANDLERS) != 0) {
+ if (handlers_sets & SET_WCHG_HANDLERS) {
/* reset SIGWINCH handler to previous (default) */
win_changed(0);
handlers_sets &= ~SET_WCHG_HANDLERS;
/* special for recount position for scroll and remove terminal margin effect */
static void cmdedit_set_out_char(int next_char)
{
-
- int c = (int)((unsigned char) command_ps[cursor]);
+ int c = (unsigned char)command_ps[cursor];
if (c == 0)
- c = ' '; /* destroy end char? */
-#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
- if (!Isprint(c)) { /* Inverse put non-printable characters */
+ c = ' '; /* destroy end char? */
+#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
+ if (!Isprint(c)) { /* Inverse put non-printable characters */
if (c >= 128)
c -= 128;
if (c < ' ')
printf("\033[7m%c\033[0m", c);
} else
#endif
- putchar(c);
+ {
+ if (initial_settings.c_lflag & ECHO)
+ putchar(c);
+ }
if (++cmdedit_x >= cmdedit_termw) {
/* terminal is scrolled down */
cmdedit_y++;
}
-static inline void out1str(const char *s)
+static void out1str(const char *s)
{
- if ( s )
+ if (s)
fputs(s, stdout);
}
-static inline void beep(void)
+
+static void beep(void)
{
putchar('\007');
}
-/* Move back one charactor */
+/* Move back one character */
/* special for slow terminal */
static void input_backward(int num)
{
if (num > cursor)
num = cursor;
- cursor -= num; /* new cursor (in command, not terminal) */
+ cursor -= num; /* new cursor (in command, not terminal) */
- if (cmdedit_x >= num) { /* no to up line */
+ if (cmdedit_x >= num) { /* no to up line */
cmdedit_x -= num;
if (num < 4)
while (num-- > 0)
putchar('\b');
-
else
printf("\033[%dD", num);
} else {
int count_y;
if (cmdedit_x) {
- putchar('\r'); /* back to first terminal pos. */
- num -= cmdedit_x; /* set previous backward */
+ putchar('\r'); /* back to first terminal pos. */
+ num -= cmdedit_x; /* set previous backward */
}
count_y = 1 + num / cmdedit_termw;
printf("\033[%dA", count_y);
cmdedit_y -= count_y;
- /* require forward after uping */
+ /* require forward after uping */
cmdedit_x = cmdedit_termw * count_y - num;
- printf("\033[%dC", cmdedit_x); /* set term cursor */
+ printf("\033[%dC", cmdedit_x); /* set term cursor */
}
}
static void put_prompt(void)
{
out1str(cmdedit_prompt);
- cmdedit_x = cmdedit_prmt_len; /* count real x terminal position */
+ cmdedit_x = cmdedit_prmt_len; /* count real x terminal position */
cursor = 0;
cmdedit_y = 0; /* new quasireal y */
}
-#ifndef CONFIG_FEATURE_SH_FANCY_PROMPT
+#if !ENABLE_FEATURE_SH_FANCY_PROMPT
static void parse_prompt(const char *prmt_ptr)
{
cmdedit_prompt = prmt_ptr;
static void parse_prompt(const char *prmt_ptr)
{
int prmt_len = 0;
- int sub_len = 0;
- char flg_not_length = '[';
- char *prmt_mem_ptr = xcalloc(1, 1);
+ 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 buf2[PATH_MAX + 1];
+ char buf[2];
+ char c;
char *pbuf;
if (!pwd_buf) {
- pwd_buf=(char *)unknown;
+ pwd_buf = (char *)bb_msg_unknown;
}
while (*prmt_ptr) {
- pbuf = buf;
+ pbuf = buf;
pbuf[1] = 0;
c = *prmt_ptr++;
if (c == '\\') {
const char *cp = prmt_ptr;
int l;
-
- c = process_escape_sequence(&prmt_ptr);
- if(prmt_ptr==cp) {
- if (*cp == 0)
- break;
- c = *prmt_ptr++;
- switch (c) {
-#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
- case 'u':
- pbuf = user_buf;
- break;
-#endif
- case 'h':
- pbuf = hostname_buf;
- if (pbuf == 0) {
- pbuf = xcalloc(256, 1);
- if (gethostname(pbuf, 255) < 0) {
- strcpy(pbuf, "?");
- } else {
- char *s = strchr(pbuf, '.');
- if (s)
- *s = 0;
+ 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 == 0) {
+ pbuf = xzalloc(256);
+ if (gethostname(pbuf, 255) < 0) {
+ strcpy(pbuf, "?");
+ } else {
+ char *s = strchr(pbuf, '.');
+ if (s)
+ *s = 0;
+ }
+ hostname_buf = pbuf;
}
- hostname_buf = pbuf;
- }
- break;
- case '$':
- c = my_euid == 0 ? '#' : '$';
- break;
-#ifdef CONFIG_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;
+ case '$':
+ c = (my_euid == 0 ? '#' : '$');
+ 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 '!':
+ snprintf(pbuf = 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++;
}
- break;
-#endif
- case 'W':
- pbuf = pwd_buf;
- cp = strrchr(pbuf,'/');
- if ( (cp != NULL) && (cp != pbuf) )
- pbuf += (cp-pbuf)+1;
- break;
- case '!':
- snprintf(pbuf = 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;
+ c = (char)strtol(buf2, 0, 16);
+ if (c == 0)
+ c = '?';
+ pbuf = buf;
+ break;
+ case '[': case ']':
+ if (c == flg_not_length) {
+ flg_not_length = flg_not_length == '[' ? ']' : '[';
+ continue;
}
- prmt_ptr++;
- }
- buf2[l] = 0;
- c = (char)strtol(buf2, 0, 16);
- if(c==0)
- c = '?';
- pbuf = buf;
- break;
- case '[': case ']':
- if (c == flg_not_length) {
- flg_not_length = flg_not_length == '[' ? ']' : '[';
- continue;
+ break;
}
- break;
- }
- }
+ }
}
- if(pbuf == buf)
+ if (pbuf == buf)
*pbuf = c;
- prmt_len += strlen(pbuf);
+ 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 (flg_not_length == ']')
- sub_len++;
}
- if(pwd_buf!=(char *)unknown)
+ if (pwd_buf!=(char *)bb_msg_unknown)
free(pwd_buf);
cmdedit_prompt = prmt_mem_ptr;
- cmdedit_prmt_len = prmt_len - sub_len;
put_prompt();
}
#endif
-/* draw promt, editor line, and clear tail */
+/* draw prompt, editor line, and clear tail */
static void redraw(int y, int back_cursor)
{
- if (y > 0) /* up to start y */
+ if (y > 0) /* up to start y */
printf("\033[%dA", y);
putchar('\r');
put_prompt();
- input_end(); /* rewrite */
- printf("\033[J"); /* destroy tail after cursor */
+ input_end(); /* rewrite */
+ printf("\033[J"); /* destroy tail after cursor */
input_backward(back_cursor);
}
-/* Delete the char in front of the cursor */
-static void input_delete(void)
+#if ENABLE_FEATURE_COMMAND_EDITING_VI
+#define DELBUFSIZ 128
+static char *delbuf; /* a (malloced) place to store deleted characters */
+static char *delp;
+static char newdelflag; /* whether delbuf should be reused yet */
+#endif
+
+/* 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 == len)
return;
+#if ENABLE_FEATURE_COMMAND_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);
len--;
- input_end(); /* rewtite new line */
- cmdedit_set_out_char(0); /* destroy end char */
- input_backward(cursor - j); /* back to old pos cursor */
+ input_end(); /* rewrite new line */
+ cmdedit_set_out_char(0); /* destroy end char */
+ input_backward(cursor - j); /* back to old pos cursor */
+}
+
+#if ENABLE_FEATURE_COMMAND_EDITING_VI
+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 */
}
+#endif
/* Delete the char in back of the cursor */
static void input_backspace(void)
{
if (cursor > 0) {
input_backward(1);
- input_delete();
+ input_delete(0);
}
}
-/* Move forward one charactor */
+/* Move forward one character */
static void input_forward(void)
{
if (cursor < len)
cmdedit_set_out_char(command_ps[cursor + 1]);
}
-
static void cmdedit_setwidth(int w, int redraw_flg)
{
cmdedit_termw = cmdedit_prmt_len + 2;
redraw((new_y >= cmdedit_y ? new_y : cmdedit_y), len - cursor);
fflush(stdout);
}
- }
+ }
}
static void cmdedit_init(void)
{
cmdedit_prmt_len = 0;
- if ((handlers_sets & SET_WCHG_HANDLERS) == 0) {
+ if (!(handlers_sets & SET_WCHG_HANDLERS)) {
/* emulate usage handler to set handler and call yours work */
win_changed(-SIGWINCH);
handlers_sets |= SET_WCHG_HANDLERS;
}
- if ((handlers_sets & SET_ATEXIT) == 0) {
-#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
+ if (!(handlers_sets & SET_ATEXIT)) {
+#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
struct passwd *entry;
my_euid = geteuid();
}
#endif
-#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
+#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
-#ifndef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR
+#if !ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
my_euid = geteuid();
#endif
my_uid = getuid();
my_gid = getgid();
-#endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
+#endif /* FEATURE_COMMAND_TAB_COMPLETION */
handlers_sets |= SET_ATEXIT;
- atexit(cmdedit_reset_term); /* be sure to do this only once */
+ atexit(cmdedit_reset_term); /* be sure to do this only once */
}
}
-#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
+#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
+static char **matches;
+static int num_matches;
+
+static void add_match(char *matched)
+{
+ int nm = num_matches;
+ int nm1 = nm + 1;
+
+ matches = xrealloc(matches, nm1 * sizeof(char *));
+ matches[nm] = matched;
+ num_matches++;
+}
+
+/*
static int is_execute(const struct stat *st)
{
- if ((!my_euid && (st->st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))) ||
- (my_uid == st->st_uid && (st->st_mode & S_IXUSR)) ||
- (my_gid == st->st_gid && (st->st_mode & S_IXGRP)) ||
- (st->st_mode & S_IXOTH)) return TRUE;
+ if ((!my_euid && (st->st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
+ || (my_uid == st->st_uid && (st->st_mode & S_IXUSR))
+ || (my_gid == st->st_gid && (st->st_mode & S_IXGRP))
+ || (st->st_mode & S_IXOTH)
+ ) {
+ return TRUE;
+ }
return FALSE;
}
+*/
-#ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
+#if ENABLE_FEATURE_COMMAND_USERNAME_COMPLETION
-static char **username_tab_completion(char *ud, int *num_matches)
+static void username_tab_completion(char *ud, char *with_shash_flg)
{
struct passwd *entry;
int userlen;
- char *temp;
-
- ud++; /* ~user/... to user/... */
+ ud++; /* ~user/... to user/... */
userlen = strlen(ud);
- if (num_matches == 0) { /* "~/..." or "~user/..." */
+ if (with_shash_flg) { /* "~/..." or "~user/..." */
char *sav_ud = ud - 1;
char *home = 0;
+ char *temp;
- if (*ud == '/') { /* "~/..." */
+ if (*ud == '/') { /* "~/..." */
home = home_pwd_buf;
} else {
/* "~user/..." */
temp = strchr(ud, '/');
- *temp = 0; /* ~user\0 */
+ *temp = 0; /* ~user\0 */
entry = getpwnam(ud);
- *temp = '/'; /* restore ~user/... */
+ *temp = '/'; /* restore ~user/... */
ud = temp;
if (entry)
home = entry->pw_dir;
}
if (home) {
if ((userlen + strlen(home) + 1) < BUFSIZ) {
- char temp2[BUFSIZ]; /* argument size */
+ char temp2[BUFSIZ]; /* argument size */
/* /home/user/... */
sprintf(temp2, "%s%s", home, ud);
strcpy(sav_ud, temp2);
}
}
- return 0; /* void, result save to argument :-) */
} else {
/* "~[^/]*" */
- char **matches = (char **) NULL;
- int nm = 0;
-
setpwent();
while ((entry = getpwent()) != NULL) {
/* Null usernames should result in all users as possible completions. */
if ( /*!userlen || */ !strncmp(ud, entry->pw_name, userlen)) {
-
- bb_asprintf(&temp, "~%s/", entry->pw_name);
- matches = xrealloc(matches, (nm + 1) * sizeof(char *));
-
- matches[nm++] = temp;
+ add_match(xasprintf("~%s/", entry->pw_name));
}
}
endpwent();
- (*num_matches) = nm;
- return (matches);
}
}
-#endif /* CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION */
+#endif /* FEATURE_COMMAND_USERNAME_COMPLETION */
enum {
FIND_EXE_ONLY = 0,
FIND_FILE_ONLY = 2,
};
+#if ENABLE_ASH
+const char *cmdedit_path_lookup;
+#else
+#define cmdedit_path_lookup getenv("PATH")
+#endif
+
static int path_parse(char ***p, int flags)
{
int npth;
- char *tmp;
- char *pth;
+ const char *tmp;
+ const char *pth = cmdedit_path_lookup;
/* if not setenv PATH variable, to search cur dir "." */
- if (flags != FIND_EXE_ONLY || (pth = getenv("PATH")) == 0 ||
- /* PATH=<empty> or PATH=:<empty> */
- *pth == 0 || (*pth == ':' && *(pth + 1) == 0)) {
+ if (flags != FIND_EXE_ONLY)
+ return 1;
+ /* PATH=<empty> or PATH=:<empty> */
+ if (!pth || !pth[0] || LONE_CHAR(pth, ':'))
return 1;
- }
tmp = pth;
npth = 0;
- for (;;) {
- npth++; /* count words is + 1 count ':' */
+ while (1) {
+ npth++; /* count words is + 1 count ':' */
tmp = strchr(tmp, ':');
- if (tmp) {
- if (*++tmp == 0)
- break; /* :<empty> */
- } else
+ if (!tmp)
break;
+ if (*++tmp == 0)
+ break; /* :<empty> */
}
*p = xmalloc(npth * sizeof(char *));
tmp = pth;
(*p)[0] = xstrdup(tmp);
- npth = 1; /* count words is + 1 count ':' */
+ npth = 1; /* count words is + 1 count ':' */
- for (;;) {
+ while (1) {
tmp = strchr(tmp, ':');
- if (tmp) {
- (*p)[0][(tmp - pth)] = 0; /* ':' -> '\0' */
- if (*++tmp == 0)
- break; /* :<empty> */
- } else
+ if (!tmp)
break;
- (*p)[npth++] = &(*p)[0][(tmp - pth)]; /* p[next]=p[0][&'\0'+1] */
+ (*p)[0][(tmp - pth)] = 0; /* ':' -> '\0' */
+ if (*++tmp == 0)
+ break; /* :<empty> */
+ (*p)[npth++] = &(*p)[0][(tmp - pth)]; /* p[next]=p[0][&'\0'+1] */
}
return npth;
return s;
}
-static char **exe_n_cwd_tab_completion(char *command, int *num_matches,
- int type)
+static void exe_n_cwd_tab_completion(char *command, int type)
{
-
- char **matches = 0;
DIR *dir;
struct dirent *next;
char dirbuf[BUFSIZ];
- int nm = *num_matches;
struct stat st;
char *path1[1];
char **paths = path1;
strcpy(dirbuf, command);
/* set dir only */
dirbuf[(pfind - command) + 1] = 0;
-#ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
- if (dirbuf[0] == '~') /* ~/... or ~user/... */
- username_tab_completion(dirbuf, 0);
+#if ENABLE_FEATURE_COMMAND_USERNAME_COMPLETION
+ if (dirbuf[0] == '~') /* ~/... or ~user/... */
+ username_tab_completion(dirbuf, dirbuf);
#endif
/* "strip" dirname in command */
pfind++;
paths[0] = dirbuf;
- npaths = 1; /* only 1 dir */
+ npaths = 1; /* only 1 dir */
}
for (i = 0; i < npaths; i++) {
dir = opendir(paths[i]);
- if (!dir) /* Don't print an error */
+ if (!dir) /* Don't print an error */
continue;
while ((next = readdir(dir)) != NULL) {
+ int len1;
char *str_found = next->d_name;
- /* matched ? */
+ /* matched? */
if (strncmp(str_found, pfind, strlen(pfind)))
continue;
/* not see .name without .match */
if (*str_found == '.' && *pfind == 0) {
- if (*paths[i] == '/' && paths[i][1] == 0
- && str_found[1] == 0) str_found = ""; /* only "/" */
- else
+ if (NOT_LONE_CHAR(paths[i], '/') || str_found[1])
continue;
+ str_found = ""; /* only "/" */
}
found = concat_path_file(paths[i], str_found);
/* hmm, remover in progress? */
- if (stat(found, &st) < 0)
+ if (stat(found, &st) < 0)
goto cont;
- /* find with dirs ? */
+ /* find with dirs? */
if (paths[i] != dirbuf)
- strcpy(found, next->d_name); /* only name */
+ strcpy(found, next->d_name); /* only name */
+
+ len1 = strlen(found);
+ found = xrealloc(found, len1 + 2);
+ found[len1] = '\0';
+ found[len1+1] = '\0';
+
if (S_ISDIR(st.st_mode)) {
/* name is directory */
- str_found = found;
- found = concat_path_file(found, "");
- free(str_found);
- str_found = add_quote_for_spec_chars(found);
+ if (found[len1-1] != '/') {
+ found[len1] = '/';
+ }
} else {
/* not put found file if search only dirs for cd */
- if (type == FIND_DIR_ONLY)
+ if (type == FIND_DIR_ONLY)
goto cont;
- str_found = add_quote_for_spec_chars(found);
- if (type == FIND_FILE_ONLY ||
- (type == FIND_EXE_ONLY && is_execute(&st)))
- strcat(str_found, " ");
}
/* Add it to the list */
- matches = xrealloc(matches, (nm + 1) * sizeof(char *));
-
- matches[nm++] = str_found;
-cont:
+ add_match(found);
+ continue;
+ cont:
free(found);
}
closedir(dir);
}
if (paths != path1) {
- free(paths[0]); /* allocated memory only in first member */
+ free(paths[0]); /* allocated memory only in first member */
free(paths);
}
- *num_matches = nm;
- return (matches);
-}
-
-static int match_compare(const void *a, const void *b)
-{
- return strcmp(*(char **) a, *(char **) b);
}
-
-#define QUOT (UCHAR_MAX+1)
+#define QUOT (UCHAR_MAX+1)
#define collapse_pos(is, in) { \
- memcpy(int_buf+(is), int_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); \
- memcpy(pos_buf+(is), pos_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); }
+ memmove(int_buf+(is), int_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); \
+ memmove(pos_buf+(is), pos_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); }
static int find_match(char *matchBuf, int *len_with_quotes)
{
/* set to integer dimension characters and own positions */
for (i = 0;; i++) {
- int_buf[i] = (int) ((unsigned char) matchBuf[i]);
+ int_buf[i] = (unsigned char)matchBuf[i];
if (int_buf[i] == 0) {
- pos_buf[i] = -1; /* indicator end line */
+ pos_buf[i] = -1; /* indicator end line */
break;
} else
pos_buf[i] = i;
collapse_pos(j, j + 1);
int_buf[j] |= QUOT;
i++;
-#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
- if (matchBuf[i] == '\t') /* algorithm equivalent */
+#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
+ if (matchBuf[i] == '\t') /* algorithm equivalent */
int_buf[j] = ' ' | QUOT;
#endif
}
-#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
+#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
else if (matchBuf[i] == '\t')
int_buf[j] = ' ';
#endif
int_buf[i] |= QUOT;
}
- /* skip commands with arguments if line have commands delimiters */
+ /* skip commands with arguments if line has commands delimiters */
/* ';' ';;' '&' '|' '&&' '||' but `>&' `<&' `>|' */
for (i = 0; int_buf[i]; i++) {
c = int_buf[i];
}
if (command_mode) {
collapse_pos(0, i + command_mode);
- i = -1; /* hack incremet */
+ i = -1; /* hack incremet */
}
}
/* collapse `command...` */
collapse_pos(0, i + 1);
break;
} else
- i--; /* hack incremet */
+ i--; /* hack incremet */
}
/* collapse (command...(command...)...) or {command...{command...}...} */
- c = 0; /* "recursive" level */
+ c = 0; /* "recursive" level */
c2 = 0;
for (i = 0; int_buf[i]; i++)
if (int_buf[i] == '(' || int_buf[i] == '{') {
else
c2++;
collapse_pos(0, i + 1);
- i = -1; /* hack incremet */
+ 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)) {
else
c2--;
collapse_pos(0, i + 1);
- i = -1; /* hack incremet */
+ i = -1; /* hack incremet */
}
/* skip first not quote space */
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' )
+ && matchBuf[pos_buf[0]]=='c'
+ && matchBuf[pos_buf[1]]=='d'
+ ) {
command_mode = FIND_DIR_ONLY;
- else {
+ } else {
command_mode = FIND_FILE_ONLY;
break;
}
}
- /* "strlen" */
- for (i = 0; int_buf[i]; i++);
+ for (i = 0; int_buf[i]; i++)
+ /* "strlen" */;
/* find last word */
for (--i; i >= 0; i--) {
c = int_buf[i];
}
}
/* skip first not quoted '\'' or '"' */
- for (i = 0; int_buf[i] == '\'' || int_buf[i] == '"'; i++);
+ 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) == '~')) {
+ while ((int_buf[i] & ~QUOT) == '/'
+ && ((int_buf[i+1] & ~QUOT) == '/' || (int_buf[i+1] & ~QUOT) == '~')
+ ) {
i++;
}
return command_mode;
}
+/*
+ display by column original ideas from ls applet,
+ very optimize by my :)
+*/
+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 int match_compare(const void *a, const void *b)
+{
+ return strcmp(*(char**)a, *(char**)b);
+}
static void input_tab(int *lastWasTab)
{
/* Do TAB completion */
- static int num_matches;
- static char **matches;
-
- if (lastWasTab == 0) { /* free all memory */
+ if (lastWasTab == 0) { /* free all memory */
if (matches) {
while (num_matches > 0)
free(matches[--num_matches]);
}
return;
}
- if (! *lastWasTab) {
-
- char *tmp;
+ if (!*lastWasTab) {
+ char *tmp, *tmp1;
int len_found;
char matchBuf[BUFSIZ];
int find_type;
int recalc_pos;
- *lastWasTab = TRUE; /* flop trigger */
+ *lastWasTab = TRUE; /* flop trigger */
/* Make a local copy of the string -- up
* to the position of the cursor */
/* Free up any memory already allocated */
input_tab(0);
-#ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION
+#if ENABLE_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)
- matches = username_tab_completion(matchBuf, &num_matches);
+ 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. */
- if (!matches)
- matches =
- exe_n_cwd_tab_completion(matchBuf,
- &num_matches, find_type);
- /* Remove duplicate found */
- if(matches) {
- int i, j;
- /* bubble */
- for(i=0; i<(num_matches-1); i++)
- for(j=i+1; j<num_matches; j++)
- if(matches[i]!=0 && matches[j]!=0 &&
- strcmp(matches[i], matches[j])==0) {
- free(matches[j]);
- matches[j]=0;
+ 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]) {
+ if (strcmp(matches[i], matches[i+1]) == 0) {
+ free(matches[i]);
+ matches[i] = 0;
+ } else {
+ matches[n++] = matches[i];
}
- j=num_matches;
- num_matches = 0;
- for(i=0; i<j; i++)
- if(matches[i]) {
- if(!strcmp(matches[i], "./"))
- matches[i][1]=0;
- else if(!strcmp(matches[i], "../"))
- matches[i][2]=0;
- matches[num_matches++]=matches[i];
}
+ }
+ matches[n++] = matches[num_matches-1];
+ num_matches = n;
}
/* Did we find exactly one match? */
if (!matches || num_matches > 1) {
- char *tmp1;
-
beep();
if (!matches)
- return; /* not found */
- /* sort */
- qsort(matches, num_matches, sizeof(char *), match_compare);
-
+ return; /* not found */
/* find minimal match */
- tmp = xstrdup(matches[0]);
- for (tmp1 = tmp; *tmp1; tmp1++)
+ tmp1 = xstrdup(matches[0]);
+ for (tmp = tmp1; *tmp; tmp++)
for (len_found = 1; len_found < num_matches; len_found++)
- if (matches[len_found][(tmp1 - tmp)] != *tmp1) {
- *tmp1 = 0;
+ if (matches[len_found][(tmp - tmp1)] != *tmp) {
+ *tmp = 0;
break;
}
- if (*tmp == 0) { /* have unique */
- free(tmp);
+ if (*tmp1 == 0) { /* have unique */
+ free(tmp1);
return;
}
- } else { /* one match */
- tmp = matches[0];
+ 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) + len) < BUFSIZ) {
/* write out the matched command */
redraw(cmdedit_y, len - recalc_pos);
}
- if (tmp != matches[0])
- free(tmp);
+ 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 i, col, l;
- int sav_cursor = cursor; /* change goto_new_line() */
+ int sav_cursor = cursor; /* change goto_new_line() */
/* Go to the next line */
goto_new_line();
- for (i = 0, col = 0; i < num_matches; i++) {
- l = strlen(matches[i]);
- if (l < 14)
- l = 14;
- printf("%-14s ", matches[i]);
- if ((l += 2) > 16)
- while (l % 16) {
- putchar(' ');
- l++;
- }
- col += l;
- col -= (col / cmdedit_termw) * cmdedit_termw;
- if (col > 60 && matches[i + 1] != NULL) {
- putchar('\n');
- col = 0;
- }
- }
- /* Go to the next line and rewrite */
- putchar('\n');
+ showfiles();
redraw(0, len - sav_cursor);
}
}
}
-#endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */
+#endif /* FEATURE_COMMAND_TAB_COMPLETION */
-#if MAX_HISTORY >= 1
+#if MAX_HISTORY > 0
static void get_previous_history(void)
{
- if(command_ps[0] != 0 || history[cur_history] == 0) {
+ if (command_ps[0] != 0 || history[cur_history] == 0) {
free(history[cur_history]);
history[cur_history] = xstrdup(command_ps);
}
if (ch < n_history) {
get_previous_history(); /* save the current history line */
- return (cur_history = ch+1);
+ cur_history = ch + 1;
+ return cur_history;
} else {
beep();
return 0;
}
}
+
+#if ENABLE_FEATURE_COMMAND_SAVEHISTORY
+void load_history(const char *fromfile)
+{
+ FILE *fp;
+ int hi;
+
+ /* cleanup old */
+
+ for (hi = n_history; hi > 0;) {
+ hi--;
+ free(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;
+ }
+ history[hi++] = hl;
+ }
+ fclose(fp);
+ }
+ cur_history = n_history = hi;
+}
+
+void save_history (const char *tofile)
+{
+ FILE *fp = fopen(tofile, "w");
+
+ if (fp) {
+ int i;
+
+ for (i = 0; i < n_history; i++) {
+ fprintf(fp, "%s\n", history[i]);
+ }
+ fclose(fp);
+ }
+}
+#endif
+
#endif
enum {
/*
* This function is used to grab a character buffer
* from the input file descriptor and allows you to
- * a string with full command editing (sortof like
+ * a string with full command editing (sort of like
* a mini readline).
*
* The following standard commands are not implemented:
* ESC-h -- Delete forward one word
* CTL-t -- Transpose two characters
*
- * Furthermore, the "vi" command editing keys are not implemented.
+ * Minimalist vi-style command line editing available if configured.
+ * vi mode implemented 2005 by Paul Fox <pgf@foxharp.boston.ma.us>
*
*/
-
-int cmdedit_read_input(char *prompt, char command[BUFSIZ])
+#if ENABLE_FEATURE_COMMAND_EDITING_VI
+static int vi_mode;
+
+void setvimode ( int viflag )
+{
+ vi_mode = viflag;
+}
+
+static void
+vi_Word_motion(char *command, int eat)
+{
+ while (cursor < len && !isspace(command[cursor]))
+ input_forward();
+ if (eat) while (cursor < len && isspace(command[cursor]))
+ input_forward();
+}
+
+static void
+vi_word_motion(char *command, int eat)
+{
+ if (isalnum(command[cursor]) || command[cursor] == '_') {
+ while (cursor < len
+ && (isalnum(command[cursor+1]) || command[cursor+1] == '_'))
+ input_forward();
+ } else if (ispunct(command[cursor])) {
+ while (cursor < len && ispunct(command[cursor+1]))
+ input_forward();
+ }
+
+ if (cursor < len)
+ input_forward();
+
+ if (eat && cursor < len && isspace(command[cursor]))
+ while (cursor < len && isspace(command[cursor]))
+ input_forward();
+}
+
+static void
+vi_End_motion(char *command)
+{
+ input_forward();
+ while (cursor < len && isspace(command[cursor]))
+ input_forward();
+ while (cursor < len-1 && !isspace(command[cursor+1]))
+ input_forward();
+}
+
+static void
+vi_end_motion(char *command)
+{
+ if (cursor >= len-1)
+ return;
+ input_forward();
+ while (cursor < len-1 && isspace(command[cursor]))
+ input_forward();
+ if (cursor >= len-1)
+ return;
+ if (isalnum(command[cursor]) || command[cursor] == '_') {
+ while (cursor < len-1
+ && (isalnum(command[cursor+1]) || command[cursor+1] == '_')
+ ) {
+ input_forward();
+ }
+ } else if (ispunct(command[cursor])) {
+ while (cursor < 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
+
+/*
+ * 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_COMMAND_EDITING(caselabel)
+
+/* convert uppercase ascii to equivalent control char, for readability */
+#define CNTRL(uc_char) ((uc_char) - 0x40)
+
+int cmdedit_read_input(char *prompt, char command[BUFSIZ])
+{
int break_out = 0;
int lastWasTab = FALSE;
- unsigned char c = 0;
-
+ 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 */
+ cmdedit_y = 0; /* quasireal y, not true work if line > xt*yt */
len = 0;
command_ps = command;
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);
-#ifndef linux
/* 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;
-#endif
+# ifndef _POSIX_VDISABLE
+# define _POSIX_VDISABLE '\0'
+# endif
+ new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
command[0] = 0;
setTermSettings(0, (void *) &new_settings);
parse_prompt(prompt);
while (1) {
-
- fflush(stdout); /* buffered out to fast */
+ 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;
- switch (c) {
+ 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 1:
+ case CNTRL('A'):
+ vi_case( case '0'|vbit: )
/* Control-a -- Beginning of line */
input_backward(cursor);
break;
- case 2:
+ 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 3:
+ 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 4:
+ case CNTRL('D'):
/* Control-d -- Delete one character, or exit
* if the len=0 and no chars to delete */
if (len == 0) {
-prepare_to_die:
-#if !defined(CONFIG_ASH)
+ errno = 0;
+ prepare_to_die:
+#if !ENABLE_ASH
printf("exit");
goto_new_line();
/* cmdedit_reset_term() called in atexit */
exit(EXIT_SUCCESS);
#else
- break_out = -1; /* for control stoped jobs */
+ /* to control stopped jobs */
+ len = break_out = -1;
break;
#endif
} else {
- input_delete();
+ input_delete(0);
}
break;
- case 5:
+ case CNTRL('E'):
+ vi_case( case '$'|vbit: )
/* Control-e -- End of line */
input_end();
break;
- case 6:
+ case CNTRL('F'):
+ vi_case( case 'l'|vbit: )
+ vi_case( case ' '|vbit: )
/* Control-f -- Move forward one character */
input_forward();
break;
input_backspace();
break;
case '\t':
-#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
+#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
input_tab(&lastWasTab);
#endif
break;
- case 11:
- /* Control-k -- clear to end of line */
- *(command + cursor) = 0;
+ case CNTRL('K'):
+ /* Control-k -- clear to end of line */
+ command[cursor] = 0;
len = cursor;
printf("\033[J");
break;
- case 12:
- /* Control-l -- clear screen */
- printf("\033[H");
- redraw(0, len-cursor);
+ case CNTRL('L'):
+ vi_case( case CNTRL('L')|vbit: )
+ /* Control-l -- clear screen */
+ printf("\033[H");
+ redraw(0, len - cursor);
break;
-#if MAX_HISTORY >= 1
- case 14:
+#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 16:
+ 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();
}
break;
#endif
- case 21:
+ 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 ESC:{
+ 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) {
-#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION
- case '\t': /* Alt-Tab */
+#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
+ case '\t': /* Alt-Tab */
input_tab(&lastWasTab);
break;
#endif
-#if MAX_HISTORY >= 1
+#if MAX_HISTORY > 0
case 'A':
/* Up Arrow -- Get previous command from history */
if (cur_history > 0) {
case 'B':
/* Down Arrow -- Get next command in history */
if (!get_next_history())
- break;
+ break;
/* Rewrite the line with the selected history item */
rewrite_line:
/* change command */
len = strlen(strcpy(command, history[cur_history]));
- /* redraw and go to end line */
+ /* 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':
break;
case '3':
/* Delete */
- input_delete();
+ input_delete(0);
break;
case '1':
case 'H':
- /* Home (Ctrl-A) */
+ /* <Home> */
input_backward(cursor);
break;
case '4':
case 'F':
- /* End (Ctrl-E) */
+ /* <End> */
input_end();
break;
default:
- if (!(c >= '1' && c <= '9'))
- c = 0;
+ c = 0;
beep();
}
- if (c >= '1' && c <= '9')
- do
- if (safe_read(0, &c, 1) < 1)
- goto prepare_to_die;
- while (c != '~');
break;
- }
- default: /* If it's regular input, do the normal thing */
-#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
+ default: /* If it's regular input, do the normal thing */
+#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
/* Control-V -- Add non-printable symbol */
- if (c == 22) {
+ if (c == CNTRL('V')) {
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == 0) {
}
} else
#endif
- if (!Isprint(c)) /* Skip non-printable characters */
- break;
+ {
+#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 */
+ if (len >= (BUFSIZ - 2)) /* Need to leave space for enter */
break;
len++;
- if (cursor == (len - 1)) { /* Append if at the end of the line */
+ 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 */
+ } else { /* Insert otherwise */
int sc = cursor;
memmove(command + sc + 1, command + sc, len - sc);
break;
}
- if (break_out) /* Enter is the command terminator, no more input. */
+ if (break_out) /* Enter is the command terminator, no more input. */
break;
if (c != '\t')
setTermSettings(0, (void *) &initial_settings);
handlers_sets &= ~SET_RESET_TERM;
-#if MAX_HISTORY >= 1
+#if MAX_HISTORY > 0
/* Handle command history log */
/* cleanup may be saved current command line */
- free(history[MAX_HISTORY]);
- history[MAX_HISTORY] = 0;
- if (len) { /* no put empty line */
+ if (len > 0) { /* no put empty line */
int i = n_history;
+
+ free(history[MAX_HISTORY]);
+ history[MAX_HISTORY] = 0;
/* After max history, remove the oldest command */
if (i >= MAX_HISTORY) {
free(history[0]);
- for(i = 0; i < (MAX_HISTORY-1); i++)
+ for (i = 0; i < MAX_HISTORY-1; i++)
history[i] = history[i+1];
}
history[i++] = xstrdup(command);
cur_history = i;
n_history = i;
-#if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
+#if ENABLE_FEATURE_SH_FANCY_PROMPT
num_ok_lines++;
#endif
}
-#else /* MAX_HISTORY < 1 */
-#if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
- if (len) { /* no put empty line */
+#else /* MAX_HISTORY == 0 */
+#if ENABLE_FEATURE_SH_FANCY_PROMPT
+ if (len > 0) { /* no put empty line */
num_ok_lines++;
}
#endif
-#endif /* MAX_HISTORY >= 1 */
- if(break_out>0) {
- command[len++] = '\n'; /* set '\n' */
- command[len] = 0;
+#endif /* MAX_HISTORY > 0 */
+ if (break_out > 0) {
+ command[len++] = '\n'; /* set '\n' */
+ command[len] = 0;
}
-#if defined(CONFIG_FEATURE_CLEAN_UP) && defined(CONFIG_FEATURE_COMMAND_TAB_COMPLETION)
- input_tab(0); /* strong free */
+#if ENABLE_FEATURE_CLEAN_UP && ENABLE_FEATURE_COMMAND_TAB_COMPLETION
+ input_tab(0); /* strong free */
#endif
-#if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
+#if ENABLE_FEATURE_SH_FANCY_PROMPT
free(cmdedit_prompt);
#endif
cmdedit_reset_term();
return len;
}
-
-
-#endif /* CONFIG_FEATURE_COMMAND_EDITING */
+#endif /* FEATURE_COMMAND_EDITING */
#ifdef TEST
const char *applet_name = "debug stuff usage";
-const char *memory_exhausted = "Memory exhausted";
-#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
+#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
#include <locale.h>
#endif
{
char buff[BUFSIZ];
char *prompt =
-#if defined(CONFIG_FEATURE_SH_FANCY_PROMPT)
- "\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:\
-\\[\\033[34;1m\\]\\w\\[\\033[35;1m\\] \
-\\!\\[\\e[36;1m\\]\\$ \\[\\E[0m\\]";
+#if ENABLE_FEATURE_SH_FANCY_PROMPT
+ "\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:"
+ "\\[\\033[34;1m\\]\\w\\[\\033[35;1m\\] "
+ "\\!\\[\\e[36;1m\\]\\$ \\[\\E[0m\\]";
#else
"% ";
#endif
-#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT
+#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
setlocale(LC_ALL, "");
#endif
- while(1) {
+ while (1) {
int l;
- cmdedit_read_input(prompt, buff);
- l = strlen(buff);
- if(l==0)
+ l = cmdedit_read_input(prompt, buff);
+ if (l <= 0 || buff[l-1] != '\n')
break;
- if(l > 0 && buff[l-1] == '\n')
- buff[l-1] = 0;
+ buff[l-1] = 0;
printf("*** cmdedit_read_input() returned line =%s=\n", buff);
}
- printf("*** cmdedit_read_input() detect ^C\n");
+ printf("*** cmdedit_read_input() detect ^D\n");
return 0;
}
-#endif /* TEST */
+#endif /* TEST */
projects / oweals / busybox.git / blobdiff