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Diffstat (limited to 'cmdedit.c')
| -rw-r--r-- | cmdedit.c | 1521 |
1 files changed, 0 insertions, 1521 deletions
diff --git a/cmdedit.c b/cmdedit.c deleted file mode 100644 index 16ec2f8..0000000 --- a/cmdedit.c +++ /dev/null @@ -1,1521 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * Termios command line History and Editting. - * - * Copyright (c) 1986-2001 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) - * - * This code is 'as is' with no warranty. - * - * - */ - -/* - 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 - to work in an Xterm and console. Ctrl-A also works as Home. - Ctrl-E also works as End. - - Small bugs (simple effect): - - not true viewing if terminal size (x*y symbols) less - size (prompt + editor`s line + 2 symbols) - - 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" - -#ifdef BB_LOCALE_SUPPORT -#define Isprint(c) isprint((c)) -#else -#define Isprint(c) ( (c) >= ' ' && (c) != ((unsigned char)'\233') ) -#endif - -#ifndef TEST - -#define D(x) - -#else - -#define BB_FEATURE_COMMAND_EDITING -#define BB_FEATURE_COMMAND_TAB_COMPLETION -#define BB_FEATURE_COMMAND_USERNAME_COMPLETION -#define BB_FEATURE_NONPRINTABLE_INVERSE_PUT -#define BB_FEATURE_CLEAN_UP - -#define D(x) x - -#endif /* TEST */ - -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION -#include <dirent.h> -#include <sys/stat.h> -#endif - -#ifdef BB_FEATURE_COMMAND_EDITING - -#ifndef BB_FEATURE_COMMAND_TAB_COMPLETION -#undef BB_FEATURE_COMMAND_USERNAME_COMPLETION -#endif - -#if defined(BB_FEATURE_COMMAND_USERNAME_COMPLETION) || defined(BB_FEATURE_SH_FANCY_PROMPT) -#define BB_FEATURE_GETUSERNAME_AND_HOMEDIR -#endif - -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR -# ifndef TEST -# include "pwd_grp/pwd.h" -# else -# include <pwd.h> -# endif /* TEST */ -#endif /* advanced FEATURES */ - - - -struct history { - char *s; - struct history *p; - struct history *n; -}; - -/* Maximum length of the linked list for the command line history */ -static const int MAX_HISTORY = 15; - -/* First element in command line list */ -static struct history *his_front = NULL; - -/* Last element in command line list */ -static struct history *his_end = NULL; - - -#include <termios.h> -#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 struct termios initial_settings, new_settings; - - -static -volatile int cmdedit_termw = 80; /* actual terminal width */ -static int history_counter = 0; /* Number of commands in history list */ -static -volatile int handlers_sets = 0; /* Set next bites: */ - -enum { - 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 cursor; /* required global for signal handler */ -static int len; /* --- "" - - "" - -"- --""-- --""--- */ -static char *command_ps; /* --- "" - - "" - -"- --""-- --""--- */ -static -#ifndef BB_FEATURE_SH_FANCY_PROMPT - const -#endif -char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */ - -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR -static char *user_buf = ""; -static char *home_pwd_buf = ""; -static int my_euid; -#endif - -#ifdef BB_FEATURE_SH_FANCY_PROMPT -static char *hostname_buf = ""; -static int num_ok_lines = 1; -#endif - - -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION - -#ifndef BB_FEATURE_GETUSERNAME_AND_HOMEDIR -static int my_euid; -#endif - -static int my_uid; -static int my_gid; - -#endif /* BB_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 - -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 */ - - /* emulate || signal call */ - if (nsig == -SIGWINCH || nsig == SIGWINCH) { - ioctl(0, TIOCGWINSZ, &win); - if (win.ws_col > 0) { - cmdedit_setwidth(win.ws_col, nsig == SIGWINCH); - } - } - /* Unix not all standart in recall signal */ - - 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 */ - /* set previous handler */ - signal(SIGWINCH, previous_SIGWINCH_handler); /* reset */ -} - -static void cmdedit_reset_term(void) -{ - if ((handlers_sets & SET_RESET_TERM) != 0) { -/* sparc and other have broken termios support: use old termio handling. */ - setTermSettings(fileno(stdin), (void *) &initial_settings); - handlers_sets &= ~SET_RESET_TERM; - } - if ((handlers_sets & SET_WCHG_HANDLERS) != 0) { - /* reset SIGWINCH handler to previous (default) */ - win_changed(0); - handlers_sets &= ~SET_WCHG_HANDLERS; - } - fflush(stdout); -#ifdef BB_FEATURE_CLEAN_UP - if (his_front) { - struct history *n; - - while (his_front != his_end) { - n = his_front->n; - free(his_front->s); - free(his_front); - his_front = n; - } - } -#endif -} - - -/* 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]); - - if (c == 0) - c = ' '; /* destroy end char? */ -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT - if (!Isprint(c)) { /* Inverse put non-printable characters */ - if (c >= 128) - c -= 128; - if (c < ' ') - c += '@'; - if (c == 127) - c = '?'; - printf("\033[7m%c\033[0m", c); - } else -#endif - putchar(c); - if (++cmdedit_x >= cmdedit_termw) { - /* terminal is scrolled down */ - cmdedit_y++; - cmdedit_x = 0; - - if (!next_char) - next_char = ' '; - /* destroy "(auto)margin" */ - putchar(next_char); - putchar('\b'); - } - cursor++; -} - -/* Move to end line. Bonus: rewrite line from cursor */ -static void input_end(void) -{ - while (cursor < len) - cmdedit_set_out_char(0); -} - -/* Go to the next line */ -static void goto_new_line(void) -{ - input_end(); - if (cmdedit_x) - putchar('\n'); -} - - -static inline void out1str(const char *s) -{ - fputs(s, stdout); -} -static inline void beep(void) -{ - putchar('\007'); -} - -/* Move back one charactor */ -/* special for slow terminal */ -static void input_backward(int num) -{ - if (num > cursor) - num = cursor; - cursor -= num; /* new cursor (in command, not terminal) */ - - 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 */ - } - count_y = 1 + num / cmdedit_termw; - printf("\033[%dA", count_y); - cmdedit_y -= count_y; - /* require forward after uping */ - cmdedit_x = cmdedit_termw * count_y - num; - 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 */ - cursor = 0; - cmdedit_y = 0; /* new quasireal y */ -} - -#ifndef BB_FEATURE_SH_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; - int sub_len = 0; - char flg_not_length = '['; - char *prmt_mem_ptr = xcalloc(1, 1); - char *pwd_buf = xgetcwd(0); - char buf2[PATH_MAX + 1]; - char buf[2]; - char c; - char *pbuf; - - if (!pwd_buf) { - pwd_buf=(char *)unknown; - } - - while (*prmt_ptr) { - 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 BB_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; - } - hostname_buf = pbuf; - } - break; - case '$': - c = my_euid == 0 ? '#' : '$'; - break; -#ifdef BB_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++; - } - 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; - } - } - } - if(pbuf == buf) - *pbuf = c; - prmt_len += strlen(pbuf); - prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_len+1), pbuf); - if (flg_not_length == ']') - sub_len++; - } - if(pwd_buf!=(char *)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 */ -static void redraw(int y, int back_cursor) -{ - if (y > 0) /* up to start y */ - printf("\033[%dA", y); - putchar('\r'); - put_prompt(); - input_end(); /* rewrite */ - printf("\033[J"); /* destroy tail after cursor */ - input_backward(back_cursor); -} - -/* Delete the char in front of the cursor */ -static void input_delete(void) -{ - int j = cursor; - - if (j == len) - return; - - 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 */ -} - -/* Delete the char in back of the cursor */ -static void input_backspace(void) -{ - if (cursor > 0) { - input_backward(1); - input_delete(); - } -} - - -/* Move forward one charactor */ -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; - if (w <= cmdedit_termw) { - cmdedit_termw = cmdedit_termw % w; - } - if (w > cmdedit_termw) { - 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), len - cursor); - fflush(stdout); - } - } -} - -static void cmdedit_init(void) -{ - cmdedit_prmt_len = 0; - if ((handlers_sets & SET_WCHG_HANDLERS) == 0) { - /* 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 BB_FEATURE_GETUSERNAME_AND_HOMEDIR - struct passwd *entry; - - my_euid = geteuid(); - entry = getpwuid(my_euid); - if (entry) { - user_buf = xstrdup(entry->pw_name); - home_pwd_buf = xstrdup(entry->pw_dir); - } -#endif - -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION - -#ifndef BB_FEATURE_GETUSERNAME_AND_HOMEDIR - my_euid = geteuid(); -#endif - my_uid = getuid(); - my_gid = getgid(); -#endif /* BB_FEATURE_COMMAND_TAB_COMPLETION */ - handlers_sets |= SET_ATEXIT; - atexit(cmdedit_reset_term); /* be sure to do this only once */ - } -} - -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION - -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; - return FALSE; -} - -#ifdef BB_FEATURE_COMMAND_USERNAME_COMPLETION - -static char **username_tab_completion(char *ud, int *num_matches) -{ - struct passwd *entry; - int userlen; - char *temp; - - - ud++; /* ~user/... to user/... */ - userlen = strlen(ud); - - if (num_matches == 0) { /* "~/..." or "~user/..." */ - char *sav_ud = ud - 1; - char *home = 0; - - if (*ud == '/') { /* "~/..." */ - home = home_pwd_buf; - } else { - /* "~user/..." */ - temp = strchr(ud, '/'); - *temp = 0; /* ~user\0 */ - entry = getpwnam(ud); - *temp = '/'; /* restore ~user/... */ - ud = temp; - if (entry) - home = entry->pw_dir; - } - if (home) { - if ((userlen + strlen(home) + 1) < BUFSIZ) { - 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)) { - - temp = xmalloc(3 + strlen(entry->pw_name)); - sprintf(temp, "~%s/", entry->pw_name); - matches = xrealloc(matches, (nm + 1) * sizeof(char *)); - - matches[nm++] = temp; - } - } - - endpwent(); - (*num_matches) = nm; - return (matches); - } -} -#endif /* BB_FEATURE_COMMAND_USERNAME_COMPLETION */ - -enum { - FIND_EXE_ONLY = 0, - FIND_DIR_ONLY = 1, - FIND_FILE_ONLY = 2, -}; - -static int path_parse(char ***p, int flags) -{ - int npth; - char *tmp; - char *pth; - - /* 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)) { - return 1; - } - - tmp = pth; - npth = 0; - - for (;;) { - npth++; /* count words is + 1 count ':' */ - tmp = strchr(tmp, ':'); - if (tmp) { - if (*++tmp == 0) - break; /* :<empty> */ - } else - break; - } - - *p = xmalloc(npth * sizeof(char *)); - - tmp = pth; - (*p)[0] = xstrdup(tmp); - npth = 1; /* count words is + 1 count ':' */ - - for (;;) { - tmp = strchr(tmp, ':'); - if (tmp) { - (*p)[0][(tmp - pth)] = 0; /* ':' -> '\0' */ - if (*++tmp == 0) - break; /* :<empty> */ - } else - break; - (*p)[npth++] = &(*p)[0][(tmp - pth)]; /* p[next]=p[0][&'\0'+1] */ - } - - return npth; -} - -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 char **exe_n_cwd_tab_completion(char *command, int *num_matches, - 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; - int npaths; - int i; - char *found; - char *pfind = strrchr(command, '/'); - - path1[0] = "."; - - if (pfind == NULL) { - /* no dir, if flags==EXE_ONLY - get paths, else "." */ - npaths = path_parse(&paths, type); - pfind = command; - } else { - /* with dir */ - /* save for change */ - strcpy(dirbuf, command); - /* set dir only */ - dirbuf[(pfind - command) + 1] = 0; -#ifdef BB_FEATURE_COMMAND_USERNAME_COMPLETION - if (dirbuf[0] == '~') /* ~/... or ~user/... */ - username_tab_completion(dirbuf, 0); -#endif - /* "strip" dirname in command */ - pfind++; - - paths[0] = dirbuf; - npaths = 1; /* only 1 dir */ - } - - for (i = 0; i < npaths; i++) { - - dir = opendir(paths[i]); - if (!dir) /* Don't print an error */ - continue; - - while ((next = readdir(dir)) != NULL) { - char *str_found = next->d_name; - - /* 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 - continue; - } - found = concat_path_file(paths[i], str_found); - /* hmm, remover in progress? */ - if (stat(found, &st) < 0) - goto cont; - /* find with dirs ? */ - if (paths[i] != dirbuf) - strcpy(found, next->d_name); /* only name */ - 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); - } else { - /* not put found file if search only dirs for cd */ - 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) == TRUE)) - strcat(str_found, " "); - } - /* Add it to the list */ - matches = xrealloc(matches, (nm + 1) * sizeof(char *)); - - matches[nm++] = str_found; -cont: - free(found); - } - closedir(dir); - } - if (paths != path1) { - 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 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)); } - -static int find_match(char *matchBuf, int *len_with_quotes) -{ - int i, j; - int command_mode; - int c, c2; - int int_buf[BUFSIZ + 1]; - int pos_buf[BUFSIZ + 1]; - - /* set to integer dimension characters and own positions */ - for (i = 0;; i++) { - int_buf[i] = (int) ((unsigned char) matchBuf[i]); - if (int_buf[i] == 0) { - pos_buf[i] = -1; /* indicator end line */ - break; - } else - pos_buf[i] = i; - } - - /* mask \+symbol and convert '\t' to ' ' */ - for (i = j = 0; matchBuf[i]; i++, j++) - if (matchBuf[i] == '\\') { - collapse_pos(j, j + 1); - int_buf[j] |= QUOT; - i++; -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT - if (matchBuf[i] == '\t') /* algorithm equivalent */ - int_buf[j] = ' ' | QUOT; -#endif - } -#ifdef BB_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 have 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; - } - } - /* "strlen" */ - for (i = 0; int_buf[i]; i++); - /* 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++); - /* 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; -} - - -static void input_tab(int *lastWasTab) -{ - /* Do TAB completion */ - static int num_matches; - static char **matches; - - if (lastWasTab == 0) { /* free all memory */ - if (matches) { - while (num_matches > 0) - free(matches[--num_matches]); - free(matches); - matches = (char **) NULL; - } - return; - } - if (*lastWasTab == FALSE) { - - char *tmp; - int len_found; - char matchBuf[BUFSIZ]; - int find_type; - int recalc_pos; - - *lastWasTab = TRUE; /* flop trigger */ - - /* Make a local copy of the string -- up - * to the position of the cursor */ - tmp = strncpy(matchBuf, command_ps, cursor); - tmp[cursor] = 0; - - find_type = find_match(matchBuf, &recalc_pos); - - /* Free up any memory already allocated */ - input_tab(0); - -#ifdef BB_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); -#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; - } - 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]; - } - } - /* 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); - - /* find minimal match */ - tmp = xstrdup(matches[0]); - for (tmp1 = tmp; *tmp1; tmp1++) - for (len_found = 1; len_found < num_matches; len_found++) - if (matches[len_found][(tmp1 - tmp)] != *tmp1) { - *tmp1 = 0; - break; - } - if (*tmp == 0) { /* have unique */ - free(tmp); - return; - } - } else { /* one match */ - tmp = matches[0]; - /* for next completion current found */ - *lastWasTab = FALSE; - } - - len_found = strlen(tmp); - /* have space to placed match? */ - if ((len_found - strlen(matchBuf) + len) < BUFSIZ) { - - /* before word for match */ - command_ps[cursor - recalc_pos] = 0; - /* save tail line */ - strcpy(matchBuf, command_ps + cursor); - /* add match */ - strcat(command_ps, tmp); - /* add tail */ - strcat(command_ps, matchBuf); - /* back to begin word for match */ - input_backward(recalc_pos); - /* new pos */ - recalc_pos = cursor + len_found; - /* new len */ - len = strlen(command_ps); - /* write out the matched command */ - redraw(cmdedit_y, len - recalc_pos); - } - if (tmp != matches[0]) - 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() */ - - /* 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'); - redraw(0, len - sav_cursor); - } - } -} -#endif /* BB_FEATURE_COMMAND_TAB_COMPLETION */ - -static void get_previous_history(struct history **hp, struct history *p) -{ - if ((*hp)->s) - free((*hp)->s); - (*hp)->s = xstrdup(command_ps); - *hp = p; -} - -static inline void get_next_history(struct history **hp) -{ - get_previous_history(hp, (*hp)->n); -} - -enum { - ESC = 27, - DEL = 127, -}; - - -/* - * 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 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 - * - * Furthermore, the "vi" command editing keys are not implemented. - * - */ - - -int cmdedit_read_input(char *prompt, char command[BUFSIZ]) -{ - - int break_out = 0; - int lastWasTab = FALSE; - unsigned char c = 0; - struct history *hp = his_end; - - /* prepare before init handlers */ - cmdedit_y = 0; /* quasireal y, not true work if line > xt*yt */ - len = 0; - command_ps = command; - - getTermSettings(0, (void *) &initial_settings); - memcpy(&new_settings, &initial_settings, sizeof(struct termios)); - new_settings.c_lflag &= ~ICANON; /* unbuffered input */ - /* Turn off echoing and CTRL-C, so we can trap it */ - new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG); -#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 - command[0] = 0; - - setTermSettings(0, (void *) &new_settings); - handlers_sets |= SET_RESET_TERM; - - /* Now initialize things */ - cmdedit_init(); - /* Print out the command prompt */ - parse_prompt(prompt); - - while (1) { - - fflush(stdout); /* buffered out to fast */ - - if (safe_read(0, &c, 1) < 1) - /* if we can't read input then exit */ - goto prepare_to_die; - - switch (c) { - case '\n': - case '\r': - /* Enter */ - goto_new_line(); - break_out = 1; - break; - case 1: - /* Control-a -- Beginning of line */ - input_backward(cursor); - break; - case 2: - /* Control-b -- Move back one character */ - input_backward(1); - break; - case 3: - /* Control-c -- stop gathering input */ - goto_new_line(); - command[0] = 0; - len = 0; - lastWasTab = FALSE; - put_prompt(); - break; - case 4: - /* Control-d -- Delete one character, or exit - * if the len=0 and no chars to delete */ - if (len == 0) { -prepare_to_die: -#if !defined(BB_ASH) - printf("exit"); - goto_new_line(); - /* cmdedit_reset_term() called in atexit */ - exit(EXIT_SUCCESS); -#else - break_out = -1; /* for control stoped jobs */ - break; -#endif - } else { - input_delete(); - } - break; - case 5: - /* Control-e -- End of line */ - input_end(); - break; - case 6: - /* Control-f -- Move forward one character */ - input_forward(); - break; - case '\b': - case DEL: - /* Control-h and DEL */ - input_backspace(); - break; - case '\t': -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION - input_tab(&lastWasTab); -#endif - break; - case 14: - /* Control-n -- Get next command in history */ - if (hp && hp->n && hp->n->s) { - get_next_history(&hp); - goto rewrite_line; - } else { - beep(); - } - break; - case 16: - /* Control-p -- Get previous command from history */ - if (hp && hp->p) { - get_previous_history(&hp, hp->p); - goto rewrite_line; - } else { - beep(); - } - break; - case 21: - /* Control-U -- Clear line before cursor */ - if (cursor) { - strcpy(command, command + cursor); - redraw(cmdedit_y, len -= cursor); - } - break; - - case ESC:{ - /* escape sequence follows */ - if (safe_read(0, &c, 1) < 1) - goto prepare_to_die; - /* different vt100 emulations */ - if (c == '[' || c == 'O') { - if (safe_read(0, &c, 1) < 1) - goto prepare_to_die; - } - switch (c) { -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION - case '\t': /* Alt-Tab */ - - input_tab(&lastWasTab); - break; -#endif - case 'A': - /* Up Arrow -- Get previous command from history */ - if (hp && hp->p) { - get_previous_history(&hp, hp->p); - goto rewrite_line; - } else { - beep(); - } - break; - case 'B': - /* Down Arrow -- Get next command in history */ - if (hp && hp->n && hp->n->s) { - get_next_history(&hp); - goto rewrite_line; - } else { - beep(); - } - break; - - /* Rewrite the line with the selected history item */ - rewrite_line: - /* change command */ - len = strlen(strcpy(command, hp->s)); - /* redraw and go to end line */ - redraw(cmdedit_y, 0); - break; - 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(); - break; - case '1': - case 'H': - /* Home (Ctrl-A) */ - input_backward(cursor); - break; - case '4': - case 'F': - /* End (Ctrl-E) */ - input_end(); - break; - default: - if (!(c >= '1' && c <= '9')) - 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 BB_FEATURE_NONPRINTABLE_INVERSE_PUT - /* Control-V -- Add non-printable symbol */ - if (c == 22) { - if (safe_read(0, &c, 1) < 1) - goto prepare_to_die; - if (c == 0) { - beep(); - break; - } - } else -#endif - if (!Isprint(c)) /* Skip non-printable characters */ - break; - - if (len >= (BUFSIZ - 2)) /* Need to leave space for enter */ - break; - - len++; - - if (cursor == (len - 1)) { /* Append if at the end of the line */ - *(command + cursor) = c; - *(command + cursor + 1) = 0; - cmdedit_set_out_char(0); - } else { /* Insert otherwise */ - int sc = cursor; - - memmove(command + sc + 1, command + sc, len - sc); - *(command + sc) = c; - sc++; - /* rewrite from cursor */ - input_end(); - /* to prev x pos + 1 */ - input_backward(cursor - sc); - } - - break; - } - if (break_out) /* Enter is the command terminator, no more input. */ - break; - - if (c != '\t') - lastWasTab = FALSE; - } - - setTermSettings(0, (void *) &initial_settings); - handlers_sets &= ~SET_RESET_TERM; - - /* Handle command history log */ - if (len) { /* no put empty line */ - - struct history *h = his_end; - char *ss; - - ss = xstrdup(command); /* duplicate */ - - if (h == 0) { - /* No previous history -- this memory is never freed */ - h = his_front = xmalloc(sizeof(struct history)); - h->n = xmalloc(sizeof(struct history)); - - h->p = NULL; - h->s = ss; - h->n->p = h; - h->n->n = NULL; - h->n->s = NULL; - his_end = h->n; - history_counter++; - } else { - /* Add a new history command -- this memory is never freed */ - h->n = xmalloc(sizeof(struct history)); - - h->n->p = h; - h->n->n = NULL; - h->n->s = NULL; - h->s = ss; - his_end = h->n; - - /* After max history, remove the oldest command */ - if (history_counter >= MAX_HISTORY) { - - struct history *p = his_front->n; - - p->p = NULL; - free(his_front->s); - free(his_front); - his_front = p; - } else { - history_counter++; - } - } -#if defined(BB_FEATURE_SH_FANCY_PROMPT) - num_ok_lines++; -#endif - } - if(break_out>0) { - command[len++] = '\n'; /* set '\n' */ - command[len] = 0; - } -#if defined(BB_FEATURE_CLEAN_UP) && defined(BB_FEATURE_COMMAND_TAB_COMPLETION) - input_tab(0); /* strong free */ -#endif -#if defined(BB_FEATURE_SH_FANCY_PROMPT) - free(cmdedit_prompt); -#endif - cmdedit_reset_term(); - return len; -} - - - -#endif /* BB_FEATURE_COMMAND_EDITING */ - - -#ifdef TEST - -const char *applet_name = "debug stuff usage"; -const char *memory_exhausted = "Memory exhausted"; - -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT -#include <locale.h> -#endif - -int main(int argc, char **argv) -{ - char buff[BUFSIZ]; - char *prompt = -#if defined(BB_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 BB_FEATURE_NONPRINTABLE_INVERSE_PUT - setlocale(LC_ALL, ""); -#endif - while(1) { - int l; - cmdedit_read_input(prompt, buff); - l = strlen(buff); - if(l==0) - break; - if(l > 0 && buff[l-1] == '\n') - buff[l-1] = 0; - printf("*** cmdedit_read_input() returned line =%s=\n", buff); - } - printf("*** cmdedit_read_input() detect ^C\n"); - return 0; -} - -#endif /* TEST */ |