X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=shell%2Fcmdedit.c;h=b6e743eb4118f33532758d84d687043c7c01f2e6;hb=062c74f71035091fcef0b20ff4e8cb77d18124cc;hp=6386ea042e8c49cf67bd24bf683e5fe816bcf298;hpb=ff9b4a8981c4af9c6107ae4193c782ae3c94a23b;p=oweals%2Fbusybox.git diff --git a/shell/cmdedit.c b/shell/cmdedit.c index 6386ea042..b6e743eb4 100644 --- a/shell/cmdedit.c +++ b/shell/cmdedit.c @@ -43,7 +43,7 @@ #include "busybox.h" -#ifdef BB_LOCALE_SUPPORT +#ifdef CONFIG_LOCALE_SUPPORT #define Isprint(c) isprint((c)) #else #define Isprint(c) ( (c) >= ' ' && (c) != ((unsigned char)'\233') ) @@ -55,56 +55,51 @@ #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 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 #endif /* TEST */ -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION #include #include #endif -#ifdef BB_FEATURE_COMMAND_EDITING +#ifdef CONFIG_FEATURE_COMMAND_EDITING -#ifndef BB_FEATURE_COMMAND_TAB_COMPLETION -#undef BB_FEATURE_COMMAND_USERNAME_COMPLETION +#ifndef CONFIG_FEATURE_COMMAND_TAB_COMPLETION +#undef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION #endif -#if defined(BB_FEATURE_COMMAND_USERNAME_COMPLETION) || defined(BB_FEATURE_SH_FANCY_PROMPT) -#define BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#if defined(CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION) || defined(CONFIG_FEATURE_SH_FANCY_PROMPT) +#define CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR #endif -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR # ifndef TEST -# include "pwd_grp/pwd.h" +# include "pwd_.h" # else # include # 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; - +#define MAX_HISTORY 15 +#if MAX_HISTORY < 1 +#warning cmdedit: You set MAX_HISTORY < 1. The history algorithm switched off. +#else +static char *history[MAX_HISTORY+1]; /* history + current */ +/* saved history lines */ +static int n_history; +/* current pointer to history line */ +static int cur_history; +#endif #include #define setTermSettings(fd,argp) tcsetattr(fd,TCSANOW,argp) @@ -116,7 +111,6 @@ 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: */ @@ -136,34 +130,38 @@ static int cursor; /* required global for signal handler */ static int len; /* --- "" - - "" - -"- --""-- --""--- */ static char *command_ps; /* --- "" - - "" - -"- --""-- --""--- */ static -#ifndef BB_FEATURE_SH_FANCY_PROMPT +#ifndef CONFIG_FEATURE_SH_FANCY_PROMPT const #endif char *cmdedit_prompt; /* --- "" - - "" - -"- --""-- --""--- */ -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifdef CONFIG_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 = ""; +#ifdef CONFIG_FEATURE_SH_FANCY_PROMPT +static char *hostname_buf; static int num_ok_lines = 1; #endif -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION -#ifndef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifndef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR static int my_euid; #endif static int my_uid; static int my_gid; -#endif /* BB_FEATURE_COMMAND_TAB_COMPLETION */ +#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 static void cmdedit_setwidth(int w, int redraw_flg); @@ -203,18 +201,6 @@ static void cmdedit_reset_term(void) 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 } @@ -226,7 +212,7 @@ static void cmdedit_set_out_char(int next_char) if (c == 0) c = ' '; /* destroy end char? */ -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT +#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT if (!Isprint(c)) { /* Inverse put non-printable characters */ if (c >= 128) c -= 128; @@ -270,7 +256,8 @@ static void goto_new_line(void) static inline void out1str(const char *s) { - fputs(s, stdout); + if ( s ) + fputs(s, stdout); } static inline void beep(void) { @@ -317,7 +304,7 @@ static void put_prompt(void) cmdedit_y = 0; /* new quasireal y */ } -#ifndef BB_FEATURE_SH_FANCY_PROMPT +#ifndef CONFIG_FEATURE_SH_FANCY_PROMPT static void parse_prompt(const char *prmt_ptr) { cmdedit_prompt = prmt_ptr; @@ -355,14 +342,14 @@ static void parse_prompt(const char *prmt_ptr) break; c = *prmt_ptr++; switch (c) { -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR case 'u': pbuf = user_buf; break; #endif case 'h': pbuf = hostname_buf; - if (*pbuf == 0) { + if (pbuf == 0) { pbuf = xcalloc(256, 1); if (gethostname(pbuf, 255) < 0) { strcpy(pbuf, "?"); @@ -378,7 +365,7 @@ static void parse_prompt(const char *prmt_ptr) case '$': c = my_euid == 0 ? '#' : '$'; break; -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR case 'w': pbuf = pwd_buf; l = strlen(home_pwd_buf); @@ -522,7 +509,7 @@ static void cmdedit_init(void) } if ((handlers_sets & SET_ATEXIT) == 0) { -#ifdef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifdef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR struct passwd *entry; my_euid = geteuid(); @@ -533,20 +520,20 @@ static void cmdedit_init(void) } #endif -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION -#ifndef BB_FEATURE_GETUSERNAME_AND_HOMEDIR +#ifndef CONFIG_FEATURE_GETUSERNAME_AND_HOMEDIR my_euid = geteuid(); #endif my_uid = getuid(); my_gid = getgid(); -#endif /* BB_FEATURE_COMMAND_TAB_COMPLETION */ +#endif /* CONFIG_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 +#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION static int is_execute(const struct stat *st) { @@ -557,7 +544,7 @@ static int is_execute(const struct stat *st) return FALSE; } -#ifdef BB_FEATURE_COMMAND_USERNAME_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION static char **username_tab_completion(char *ud, int *num_matches) { @@ -606,8 +593,7 @@ static char **username_tab_completion(char *ud, int *num_matches) /* 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); + bb_asprintf(&temp, "~%s/", entry->pw_name); matches = xrealloc(matches, (nm + 1) * sizeof(char *)); matches[nm++] = temp; @@ -619,7 +605,7 @@ static char **username_tab_completion(char *ud, int *num_matches) return (matches); } } -#endif /* BB_FEATURE_COMMAND_USERNAME_COMPLETION */ +#endif /* CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION */ enum { FIND_EXE_ONLY = 0, @@ -716,7 +702,7 @@ static char **exe_n_cwd_tab_completion(char *command, int *num_matches, strcpy(dirbuf, command); /* set dir only */ dirbuf[(pfind - command) + 1] = 0; -#ifdef BB_FEATURE_COMMAND_USERNAME_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION if (dirbuf[0] == '~') /* ~/... or ~user/... */ username_tab_completion(dirbuf, 0); #endif @@ -765,7 +751,7 @@ static char **exe_n_cwd_tab_completion(char *command, int *num_matches, goto cont; str_found = add_quote_for_spec_chars(found); if (type == FIND_FILE_ONLY || - (type == FIND_EXE_ONLY && is_execute(&st) == TRUE)) + (type == FIND_EXE_ONLY && is_execute(&st))) strcat(str_found, " "); } /* Add it to the list */ @@ -795,8 +781,8 @@ static int match_compare(const void *a, const void *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)); } + 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) { @@ -822,12 +808,12 @@ static int find_match(char *matchBuf, int *len_with_quotes) collapse_pos(j, j + 1); int_buf[j] |= QUOT; i++; -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT +#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT if (matchBuf[i] == '\t') /* algorithm equivalent */ int_buf[j] = ' ' | QUOT; #endif } -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT +#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT else if (matchBuf[i] == '\t') int_buf[j] = ' '; #endif @@ -976,7 +962,7 @@ static void input_tab(int *lastWasTab) } return; } - if (*lastWasTab == FALSE) { + if (! *lastWasTab) { char *tmp; int len_found; @@ -996,7 +982,7 @@ static void input_tab(int *lastWasTab) /* Free up any memory already allocated */ input_tab(0); -#ifdef BB_FEATURE_COMMAND_USERNAME_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION /* If the word starts with `~' and there is no slash in the word, * then try completing this word as a username. */ @@ -1115,20 +1101,31 @@ static void input_tab(int *lastWasTab) } } } -#endif /* BB_FEATURE_COMMAND_TAB_COMPLETION */ +#endif /* CONFIG_FEATURE_COMMAND_TAB_COMPLETION */ -static void get_previous_history(struct history **hp, struct history *p) +#if MAX_HISTORY >= 1 +static void get_previous_history(void) { - if ((*hp)->s) - free((*hp)->s); - (*hp)->s = xstrdup(command_ps); - *hp = p; + if(command_ps[0] != 0 || history[cur_history] == 0) { + free(history[cur_history]); + history[cur_history] = xstrdup(command_ps); + } + cur_history--; } -static inline void get_next_history(struct history **hp) +static int get_next_history(void) { - get_previous_history(hp, (*hp)->n); + int ch = cur_history; + + if (ch < n_history) { + get_previous_history(); /* save the current history line */ + return (cur_history = ch+1); + } else { + beep(); + return 0; + } } +#endif enum { ESC = 27, @@ -1160,7 +1157,6 @@ 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 */ @@ -1228,7 +1224,7 @@ int cmdedit_read_input(char *prompt, char command[BUFSIZ]) * if the len=0 and no chars to delete */ if (len == 0) { prepare_to_die: -#if !defined(BB_ASH) +#if !defined(CONFIG_ASH) printf("exit"); goto_new_line(); /* cmdedit_reset_term() called in atexit */ @@ -1255,28 +1251,37 @@ prepare_to_die: input_backspace(); break; case '\t': -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION input_tab(&lastWasTab); #endif break; + case 11: + /* 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); + break; +#if MAX_HISTORY >= 1 case 14: /* Control-n -- Get next command in history */ - if (hp && hp->n && hp->n->s) { - get_next_history(&hp); + if (get_next_history()) 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); + if (cur_history > 0) { + get_previous_history(); goto rewrite_line; } else { beep(); } break; +#endif case 21: /* Control-U -- Clear line before cursor */ if (cursor) { @@ -1284,7 +1289,6 @@ prepare_to_die: redraw(cmdedit_y, len -= cursor); } break; - case ESC:{ /* escape sequence follows */ if (safe_read(0, &c, 1) < 1) @@ -1295,16 +1299,17 @@ prepare_to_die: goto prepare_to_die; } switch (c) { -#ifdef BB_FEATURE_COMMAND_TAB_COMPLETION +#ifdef CONFIG_FEATURE_COMMAND_TAB_COMPLETION case '\t': /* Alt-Tab */ input_tab(&lastWasTab); break; #endif +#if MAX_HISTORY >= 1 case 'A': /* Up Arrow -- Get previous command from history */ - if (hp && hp->p) { - get_previous_history(&hp, hp->p); + if (cur_history > 0) { + get_previous_history(); goto rewrite_line; } else { beep(); @@ -1312,21 +1317,16 @@ prepare_to_die: 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(); - } + if (!get_next_history()) break; - /* Rewrite the line with the selected history item */ - rewrite_line: +rewrite_line: /* change command */ - len = strlen(strcpy(command, hp->s)); + len = strlen(strcpy(command, history[cur_history])); /* redraw and go to end line */ redraw(cmdedit_y, 0); break; +#endif case 'C': /* Right Arrow -- Move forward one character */ input_forward(); @@ -1363,7 +1363,7 @@ prepare_to_die: } default: /* If it's regular input, do the normal thing */ -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT +#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT /* Control-V -- Add non-printable symbol */ if (c == 22) { if (safe_read(0, &c, 1) < 1) @@ -1410,61 +1410,41 @@ prepare_to_die: setTermSettings(0, (void *) &initial_settings); handlers_sets &= ~SET_RESET_TERM; +#if MAX_HISTORY >= 1 /* 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 */ - - 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; - + int i = n_history; /* 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 (i >= MAX_HISTORY) { + free(history[0]); + for(i = 0; i < (MAX_HISTORY-1); i++) + history[i] = history[i+1]; } -#if defined(BB_FEATURE_SH_FANCY_PROMPT) + history[i++] = xstrdup(command); + cur_history = i; + n_history = i; +#if defined(CONFIG_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 */ + num_ok_lines++; + } +#endif +#endif /* MAX_HISTORY >= 1 */ if(break_out>0) { command[len++] = '\n'; /* set '\n' */ command[len] = 0; } -#if defined(BB_FEATURE_CLEAN_UP) && defined(BB_FEATURE_COMMAND_TAB_COMPLETION) +#if defined(CONFIG_FEATURE_CLEAN_UP) && defined(CONFIG_FEATURE_COMMAND_TAB_COMPLETION) input_tab(0); /* strong free */ #endif -#if defined(BB_FEATURE_SH_FANCY_PROMPT) +#if defined(CONFIG_FEATURE_SH_FANCY_PROMPT) free(cmdedit_prompt); #endif cmdedit_reset_term(); @@ -1473,7 +1453,7 @@ prepare_to_die: -#endif /* BB_FEATURE_COMMAND_EDITING */ +#endif /* CONFIG_FEATURE_COMMAND_EDITING */ #ifdef TEST @@ -1481,7 +1461,7 @@ prepare_to_die: const char *applet_name = "debug stuff usage"; const char *memory_exhausted = "Memory exhausted"; -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT +#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT #include #endif @@ -1489,7 +1469,7 @@ int main(int argc, char **argv) { char buff[BUFSIZ]; char *prompt = -#if defined(BB_FEATURE_SH_FANCY_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\\]"; @@ -1497,7 +1477,7 @@ int main(int argc, char **argv) "% "; #endif -#ifdef BB_FEATURE_NONPRINTABLE_INVERSE_PUT +#ifdef CONFIG_FEATURE_NONPRINTABLE_INVERSE_PUT setlocale(LC_ALL, ""); #endif while(1) {