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Diffstat (limited to 'readline/examples/rlfe.c')
| -rw-r--r-- | readline/examples/rlfe.c | 1042 |
1 files changed, 0 insertions, 1042 deletions
diff --git a/readline/examples/rlfe.c b/readline/examples/rlfe.c deleted file mode 100644 index d634d7c..0000000 --- a/readline/examples/rlfe.c +++ /dev/null @@ -1,1042 +0,0 @@ -/* A front-end using readline to "cook" input lines for Kawa. - * - * Copyright (C) 1999 Per Bothner - * - * This front-end program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as published - * by the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * Some code from Johnson & Troan: "Linux Application Development" - * (Addison-Wesley, 1998) was used directly or for inspiration. - */ - -/* PROBLEMS/TODO: - * - * Only tested under Linux; needs to be ported. - * - * When running mc -c under the Linux console, mc does not recognize - * mouse clicks, which mc does when not running under fep. - * - * Pasting selected text containing tabs is like hitting the tab character, - * which invokes readline completion. We don't want this. I don't know - * if this is fixable without integrating fep into a terminal emulator. - * - * Echo suppression is a kludge, but can only be avoided with better kernel - * support: We need a tty mode to disable "real" echoing, while still - * letting the inferior think its tty driver to doing echoing. - * Stevens's book claims SCR$ and BSD4.3+ have TIOCREMOTE. - * - * The latest readline may have some hooks we can use to avoid having - * to back up the prompt. - * - * Desirable readline feature: When in cooked no-echo mode (e.g. password), - * echo characters are they are types with '*', but remove them when done. - * - * A synchronous output while we're editing an input line should be - * inserted in the output view *before* the input line, so that the - * lines being edited (with the prompt) float at the end of the input. - * - * A "page mode" option to emulate more/less behavior: At each page of - * output, pause for a user command. This required parsing the output - * to keep track of line lengths. It also requires remembering the - * output, if we want an option to scroll back, which suggests that - * this should be integrated with a terminal emulator like xterm. - */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdio.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <signal.h> -#include <netdb.h> -#include <stdlib.h> -#include <errno.h> -#include <grp.h> -#include <string.h> -#include <sys/stat.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include <termios.h> -#include <limits.h> -#include <dirent.h> - -#ifdef READLINE_LIBRARY -# include "readline.h" -# include "history.h" -#else -# include <readline/readline.h> -# include <readline/history.h> -#endif - -#ifndef COMMAND -#define COMMAND "/bin/sh" -#endif -#ifndef COMMAND_ARGS -#define COMMAND_ARGS COMMAND -#endif - -#ifndef HAVE_MEMMOVE -#ifndef memmove -# if __GNUC__ > 1 -# define memmove(d, s, n) __builtin_memcpy(d, s, n) -# else -# define memmove(d, s, n) memcpy(d, s, n) -# endif -#else -# define memmove(d, s, n) memcpy(d, s, n) -#endif -#endif - -#define APPLICATION_NAME "Rlfe" - -#ifndef errno -extern int errno; -#endif - -extern int optind; -extern char *optarg; - -static char *progname; -static char *progversion; - -static int in_from_inferior_fd; -static int out_to_inferior_fd; - -/* Unfortunately, we cannot safely display echo from the inferior process. - The reason is that the echo bit in the pty is "owned" by the inferior, - and if we try to turn it off, we could confuse the inferior. - Thus, when echoing, we get echo twice: First readline echoes while - we're actually editing. Then we send the line to the inferior, and the - terminal driver send back an extra echo. - The work-around is to remember the input lines, and when we see that - line come back, we supress the output. - A better solution (supposedly available on SVR4) would be a smarter - terminal driver, with more flags ... */ -#define ECHO_SUPPRESS_MAX 1024 -char echo_suppress_buffer[ECHO_SUPPRESS_MAX]; -int echo_suppress_start = 0; -int echo_suppress_limit = 0; - -/* #define DEBUG */ - -static FILE *logfile = NULL; - -#ifdef DEBUG -FILE *debugfile = NULL; -#define DPRINT0(FMT) (fprintf(debugfile, FMT), fflush(debugfile)) -#define DPRINT1(FMT, V1) (fprintf(debugfile, FMT, V1), fflush(debugfile)) -#define DPRINT2(FMT, V1, V2) (fprintf(debugfile, FMT, V1, V2), fflush(debugfile)) -#else -#define DPRINT0(FMT) /* Do nothing */ -#define DPRINT1(FMT, V1) /* Do nothing */ -#define DPRINT2(FMT, V1, V2) /* Do nothing */ -#endif - -struct termios orig_term; - -static int rlfe_directory_completion_hook __P((char **)); -static int rlfe_directory_rewrite_hook __P((char **)); -static char *rlfe_filename_completion_function __P((const char *, int)); - -/* Pid of child process. */ -static pid_t child = -1; - -static void -sig_child (int signo) -{ - int status; - wait (&status); - DPRINT0 ("(Child process died.)\n"); - tcsetattr(STDIN_FILENO, TCSANOW, &orig_term); - exit (0); -} - -volatile int propagate_sigwinch = 0; - -/* sigwinch_handler - * propagate window size changes from input file descriptor to - * master side of pty. - */ -void sigwinch_handler(int signal) { - propagate_sigwinch = 1; -} - -/* get_master_pty() takes a double-indirect character pointer in which - * to put a slave name, and returns an integer file descriptor. - * If it returns < 0, an error has occurred. - * Otherwise, it has returned the master pty file descriptor, and fills - * in *name with the name of the corresponding slave pty. - * Once the slave pty has been opened, you are responsible to free *name. - */ - -int get_master_pty(char **name) { - int i, j; - /* default to returning error */ - int master = -1; - - /* create a dummy name to fill in */ - *name = strdup("/dev/ptyXX"); - - /* search for an unused pty */ - for (i=0; i<16 && master <= 0; i++) { - for (j=0; j<16 && master <= 0; j++) { - (*name)[5] = 'p'; - (*name)[8] = "pqrstuvwxyzPQRST"[i]; - (*name)[9] = "0123456789abcdef"[j]; - /* open the master pty */ - if ((master = open(*name, O_RDWR)) < 0) { - if (errno == ENOENT) { - /* we are out of pty devices */ - free (*name); - return (master); - } - } - else { - /* By substituting a letter, we change the master pty - * name into the slave pty name. - */ - (*name)[5] = 't'; - if (access(*name, R_OK|W_OK) != 0) - { - close(master); - master = -1; - } - } - } - } - if ((master < 0) && (i == 16) && (j == 16)) { - /* must have tried every pty unsuccessfully */ - free (*name); - return (master); - } - - (*name)[5] = 't'; - - return (master); -} - -/* get_slave_pty() returns an integer file descriptor. - * If it returns < 0, an error has occurred. - * Otherwise, it has returned the slave file descriptor. - */ - -int get_slave_pty(char *name) { - struct group *gptr; - gid_t gid; - int slave = -1; - - /* chown/chmod the corresponding pty, if possible. - * This will only work if the process has root permissions. - * Alternatively, write and exec a small setuid program that - * does just this. - */ - if ((gptr = getgrnam("tty")) != 0) { - gid = gptr->gr_gid; - } else { - /* if the tty group does not exist, don't change the - * group on the slave pty, only the owner - */ - gid = -1; - } - - /* Note that we do not check for errors here. If this is code - * where these actions are critical, check for errors! - */ - chown(name, getuid(), gid); - /* This code only makes the slave read/writeable for the user. - * If this is for an interactive shell that will want to - * receive "write" and "wall" messages, OR S_IWGRP into the - * second argument below. - */ - chmod(name, S_IRUSR|S_IWUSR); - - /* open the corresponding slave pty */ - slave = open(name, O_RDWR); - return (slave); -} - -/* Certain special characters, such as ctrl/C, we want to pass directly - to the inferior, rather than letting readline handle them. */ - -static char special_chars[20]; -static int special_chars_count; - -static void -add_special_char(int ch) -{ - if (ch != 0) - special_chars[special_chars_count++] = ch; -} - -static int eof_char; - -static int -is_special_char(int ch) -{ - int i; -#if 0 - if (ch == eof_char && rl_point == rl_end) - return 1; -#endif - for (i = special_chars_count; --i >= 0; ) - if (special_chars[i] == ch) - return 1; - return 0; -} - -static char buf[1024]; -/* buf[0 .. buf_count-1] is the what has been emitted on the current line. - It is used as the readline prompt. */ -static int buf_count = 0; - -int num_keys = 0; - -static void -null_prep_terminal (int meta) -{ -} - -static void -null_deprep_terminal () -{ -} - -char pending_special_char; - -static void -line_handler (char *line) -{ - if (line == NULL) - { - char buf[1]; - DPRINT0("saw eof!\n"); - buf[0] = '\004'; /* ctrl/d */ - write (out_to_inferior_fd, buf, 1); - } - else - { - static char enter[] = "\r"; - /* Send line to inferior: */ - int length = strlen (line); - if (length > ECHO_SUPPRESS_MAX-2) - { - echo_suppress_start = 0; - echo_suppress_limit = 0; - } - else - { - if (echo_suppress_limit + length > ECHO_SUPPRESS_MAX - 2) - { - if (echo_suppress_limit - echo_suppress_start + length - <= ECHO_SUPPRESS_MAX - 2) - { - memmove (echo_suppress_buffer, - echo_suppress_buffer + echo_suppress_start, - echo_suppress_limit - echo_suppress_start); - echo_suppress_limit -= echo_suppress_start; - echo_suppress_start = 0; - } - else - { - echo_suppress_limit = 0; - } - echo_suppress_start = 0; - } - memcpy (echo_suppress_buffer + echo_suppress_limit, - line, length); - echo_suppress_limit += length; - echo_suppress_buffer[echo_suppress_limit++] = '\r'; - echo_suppress_buffer[echo_suppress_limit++] = '\n'; - } - write (out_to_inferior_fd, line, length); - if (pending_special_char == 0) - { - write (out_to_inferior_fd, enter, sizeof(enter)-1); - if (*line) - add_history (line); - } - free (line); - } - rl_callback_handler_remove (); - buf_count = 0; - num_keys = 0; - if (pending_special_char != 0) - { - write (out_to_inferior_fd, &pending_special_char, 1); - pending_special_char = 0; - } -} - -/* Value of rl_getc_function. - Use this because readline should read from stdin, not rl_instream, - points to the pty (so readline has monitor its terminal modes). */ - -int -my_rl_getc (FILE *dummy) -{ - int ch = rl_getc (stdin); - if (is_special_char (ch)) - { - pending_special_char = ch; - return '\r'; - } - return ch; -} - -static void -usage() -{ - fprintf (stderr, "%s: usage: %s [-l filename] [-a] [-n appname] [-hv] [command [arguments...]]\n", - progname, progname); -} - -int -main(int argc, char** argv) -{ - char *path; - int i, append; - int master; - char *name, *logfname, *appname; - int in_from_tty_fd; - struct sigaction act; - struct winsize ws; - struct termios t; - int maxfd; - fd_set in_set; - static char empty_string[1] = ""; - char *prompt = empty_string; - int ioctl_err = 0; - - if ((progname = strrchr (argv[0], '/')) == 0) - progname = argv[0]; - else - progname++; - progversion = RL_LIBRARY_VERSION; - - append = 0; - appname = APPLICATION_NAME; - logfname = (char *)NULL; - - while ((i = getopt (argc, argv, "ahl:n:v")) != EOF) - { - switch (i) - { - case 'l': - logfname = optarg; - break; - case 'n': - appname = optarg; - break; - case 'a': - append = 1; - break; - case 'h': - usage (); - exit (0); - case 'v': - fprintf (stderr, "%s version %s\n", progname, progversion); - exit (0); - default: - usage (); - exit (2); - } - } - - argc -= optind; - argv += optind; - - if (logfname) - { - logfile = fopen (logfname, append ? "a" : "w"); - if (logfile == 0) - fprintf (stderr, "%s: warning: could not open log file %s: %s\n", - progname, logfname, strerror (errno)); - } - - rl_readline_name = appname; - -#ifdef DEBUG - debugfile = fopen("LOG", "w"); -#endif - - if ((master = get_master_pty(&name)) < 0) - { - perror("ptypair: could not open master pty"); - exit(1); - } - - DPRINT1("pty name: '%s'\n", name); - - /* set up SIGWINCH handler */ - act.sa_handler = sigwinch_handler; - sigemptyset(&(act.sa_mask)); - act.sa_flags = 0; - if (sigaction(SIGWINCH, &act, NULL) < 0) - { - perror("ptypair: could not handle SIGWINCH "); - exit(1); - } - - if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0) - { - perror("ptypair: could not get window size"); - exit(1); - } - - if ((child = fork()) < 0) - { - perror("cannot fork"); - exit(1); - } - - if (child == 0) - { - int slave; /* file descriptor for slave pty */ - - /* We are in the child process */ - close(master); - -#ifdef TIOCSCTTY - if ((slave = get_slave_pty(name)) < 0) - { - perror("ptypair: could not open slave pty"); - exit(1); - } - free(name); -#endif - - /* We need to make this process a session group leader, because - * it is on a new PTY, and things like job control simply will - * not work correctly unless there is a session group leader - * and process group leader (which a session group leader - * automatically is). This also disassociates us from our old - * controlling tty. - */ - if (setsid() < 0) - { - perror("could not set session leader"); - } - - /* Tie us to our new controlling tty. */ -#ifdef TIOCSCTTY - if (ioctl(slave, TIOCSCTTY, NULL)) - { - perror("could not set new controlling tty"); - } -#else - if ((slave = get_slave_pty(name)) < 0) - { - perror("ptypair: could not open slave pty"); - exit(1); - } - free(name); -#endif - - /* make slave pty be standard in, out, and error */ - dup2(slave, STDIN_FILENO); - dup2(slave, STDOUT_FILENO); - dup2(slave, STDERR_FILENO); - - /* at this point the slave pty should be standard input */ - if (slave > 2) - { - close(slave); - } - - /* Try to restore window size; failure isn't critical */ - if (ioctl(STDOUT_FILENO, TIOCSWINSZ, &ws) < 0) - { - perror("could not restore window size"); - } - - /* now start the shell */ - { - static char* command_args[] = { COMMAND_ARGS, NULL }; - if (argc < 1) - execvp(COMMAND, command_args); - else - execvp(argv[0], &argv[0]); - } - - /* should never be reached */ - exit(1); - } - - /* parent */ - signal (SIGCHLD, sig_child); - free(name); - - /* Note that we only set termios settings for standard input; - * the master side of a pty is NOT a tty. - */ - tcgetattr(STDIN_FILENO, &orig_term); - - t = orig_term; - eof_char = t.c_cc[VEOF]; - /* add_special_char(t.c_cc[VEOF]);*/ - add_special_char(t.c_cc[VINTR]); - add_special_char(t.c_cc[VQUIT]); - add_special_char(t.c_cc[VSUSP]); -#if defined (VDISCARD) - add_special_char(t.c_cc[VDISCARD]); -#endif - -#if 0 - t.c_lflag |= (ICANON | ISIG | ECHO | ECHOCTL | ECHOE | \ - ECHOK | ECHOKE | ECHONL | ECHOPRT ); -#else - t.c_lflag &= ~(ICANON | ISIG | ECHO | ECHOCTL | ECHOE | \ - ECHOK | ECHOKE | ECHONL | ECHOPRT ); -#endif - t.c_iflag |= IGNBRK; - t.c_cc[VMIN] = 1; - t.c_cc[VTIME] = 0; - tcsetattr(STDIN_FILENO, TCSANOW, &t); - in_from_inferior_fd = master; - out_to_inferior_fd = master; - rl_instream = fdopen (master, "r"); - rl_getc_function = my_rl_getc; - - rl_prep_term_function = null_prep_terminal; - rl_deprep_term_function = null_deprep_terminal; - rl_callback_handler_install (prompt, line_handler); - -#if 1 - rl_directory_completion_hook = rlfe_directory_completion_hook; - rl_completion_entry_function = rlfe_filename_completion_function; -#else - rl_directory_rewrite_hook = rlfe_directory_rewrite_hook; -#endif - - in_from_tty_fd = STDIN_FILENO; - FD_ZERO (&in_set); - maxfd = in_from_inferior_fd > in_from_tty_fd ? in_from_inferior_fd - : in_from_tty_fd; - for (;;) - { - int num; - FD_SET (in_from_inferior_fd, &in_set); - FD_SET (in_from_tty_fd, &in_set); - - num = select(maxfd+1, &in_set, NULL, NULL, NULL); - - if (propagate_sigwinch) - { - struct winsize ws; - if (ioctl (STDIN_FILENO, TIOCGWINSZ, &ws) >= 0) - { - ioctl (master, TIOCSWINSZ, &ws); - } - propagate_sigwinch = 0; - continue; - } - - if (num <= 0) - { - perror ("select"); - exit (-1); - } - if (FD_ISSET (in_from_tty_fd, &in_set)) - { - extern int readline_echoing_p; - struct termios term_master; - int do_canon = 1; - int ioctl_ret; - - DPRINT1("[tty avail num_keys:%d]\n", num_keys); - - /* If we can't get tty modes for the master side of the pty, we - can't handle non-canonical-mode programs. Always assume the - master is in canonical echo mode if we can't tell. */ - ioctl_ret = tcgetattr(master, &term_master); - - if (ioctl_ret >= 0) - { - DPRINT2 ("echo:%d, canon:%d\n", - (term_master.c_lflag & ECHO) != 0, - (term_master.c_lflag & ICANON) != 0); - do_canon = (term_master.c_lflag & ICANON) != 0; - readline_echoing_p = (term_master.c_lflag & ECHO) != 0; - } - else - { - if (ioctl_err == 0) - DPRINT1("tcgetattr on master fd failed: errno = %d\n", errno); - ioctl_err = 1; - } - - if (do_canon == 0 && num_keys == 0) - { - char ch[10]; - int count = read (STDIN_FILENO, ch, sizeof(ch)); - write (out_to_inferior_fd, ch, count); - } - else - { - if (num_keys == 0) - { - int i; - /* Re-install callback handler for new prompt. */ - if (prompt != empty_string) - free (prompt); - prompt = malloc (buf_count + 1); - if (prompt == NULL) - prompt = empty_string; - else - { - memcpy (prompt, buf, buf_count); - prompt[buf_count] = '\0'; - DPRINT1("New prompt '%s'\n", prompt); -#if 0 /* ifdef HAVE_RL_ALREADY_PROMPTED -- doesn't work */ - rl_already_prompted = buf_count > 0; -#else - if (buf_count > 0) - write (1, "\r", 1); -#endif - } - rl_callback_handler_install (prompt, line_handler); - } - num_keys++; - rl_callback_read_char (); - } - } - else /* input from inferior. */ - { - int i; - int count; - int old_count; - if (buf_count > (sizeof(buf) >> 2)) - buf_count = 0; - count = read (in_from_inferior_fd, buf+buf_count, - sizeof(buf) - buf_count); - if (count <= 0) - { - DPRINT0 ("(Connection closed by foreign host.)\n"); - tcsetattr(STDIN_FILENO, TCSANOW, &orig_term); - exit (0); - } - old_count = buf_count; - - /* Do some minimal carriage return translation and backspace - processing before logging the input line. */ - if (logfile) - { -#ifndef __GNUC__ - char *b; -#else - char b[count + 1]; -#endif - int i, j; - -#ifndef __GNUC__ - b = malloc (count + 1); - if (b) { -#endif - for (i = 0; i < count; i++) - b[i] = buf[buf_count + i]; - b[i] = '\0'; - for (i = j = 0; i <= count; i++) - { - if (b[i] == '\r') - { - if (b[i+1] != '\n') - b[j++] = '\n'; - } - else if (b[i] == '\b') - { - if (i) - j--; - } - else - b[j++] = b[i]; - } - fprintf (logfile, "%s", b); - -#ifndef __GNUC__ - free (b); - } -#endif - } - - /* Look for any pending echo that we need to suppress. */ - while (echo_suppress_start < echo_suppress_limit - && count > 0 - && buf[buf_count] == echo_suppress_buffer[echo_suppress_start]) - { - count--; - buf_count++; - echo_suppress_start++; - } - - /* Write to the terminal anything that was not suppressed. */ - if (count > 0) - write (1, buf + buf_count, count); - - /* Finally, look for a prompt candidate. - * When we get around to going input (from the keyboard), - * we will consider the prompt to be anything since the last - * line terminator. So we need to save that text in the - * initial part of buf. However, anything before the - * most recent end-of-line is not interesting. */ - buf_count += count; -#if 1 - for (i = buf_count; --i >= old_count; ) -#else - for (i = buf_count - 1; i-- >= buf_count - count; ) -#endif - { - if (buf[i] == '\n' || buf[i] == '\r') - { - i++; - memmove (buf, buf+i, buf_count - i); - buf_count -= i; - break; - } - } - DPRINT2("-> i: %d, buf_count: %d\n", i, buf_count); - } - } -} - -/* - * - * FILENAME COMPLETION FOR RLFE - * - */ - -#ifndef PATH_MAX -# define PATH_MAX 1024 -#endif - -#define DIRSEP '/' -#define ISDIRSEP(x) ((x) == '/') -#define PATHSEP(x) (ISDIRSEP(x) || (x) == 0) - -#define DOT_OR_DOTDOT(x) \ - ((x)[0] == '.' && (PATHSEP((x)[1]) || \ - ((x)[1] == '.' && PATHSEP((x)[2])))) - -#define FREE(x) if (x) free(x) - -#define STRDUP(s, x) do { \ - s = strdup (x);\ - if (s == 0) \ - return ((char *)NULL); \ - } while (0) - -static int -get_inferior_cwd (path, psize) - char *path; - size_t psize; -{ - int n; - static char procfsbuf[PATH_MAX] = { '\0' }; - - if (procfsbuf[0] == '\0') - sprintf (procfsbuf, "/proc/%d/cwd", (int)child); - n = readlink (procfsbuf, path, psize); - if (n < 0) - return n; - if (n > psize) - return -1; - path[n] = '\0'; - return n; -} - -static int -rlfe_directory_rewrite_hook (dirnamep) - char **dirnamep; -{ - char *ldirname, cwd[PATH_MAX], *retdir, *ld; - int n, ldlen; - - ldirname = *dirnamep; - - if (*ldirname == '/') - return 0; - - n = get_inferior_cwd (cwd, sizeof(cwd) - 1); - if (n < 0) - return 0; - if (n == 0) /* current directory */ - { - cwd[0] = '.'; - cwd[1] = '\0'; - n = 1; - } - - /* Minimally canonicalize ldirname by removing leading `./' */ - for (ld = ldirname; *ld; ) - { - if (ISDIRSEP (ld[0])) - ld++; - else if (ld[0] == '.' && PATHSEP(ld[1])) - ld++; - else - break; - } - ldlen = (ld && *ld) ? strlen (ld) : 0; - - retdir = (char *)malloc (n + ldlen + 3); - if (retdir == 0) - return 0; - if (ldlen) - sprintf (retdir, "%s/%s", cwd, ld); - else - strcpy (retdir, cwd); - free (ldirname); - - *dirnamep = retdir; - - DPRINT1("rl_directory_rewrite_hook returns %s\n", retdir); - return 1; -} - -/* Translate *DIRNAMEP to be relative to the inferior's CWD. Leave a trailing - slash on the result. */ -static int -rlfe_directory_completion_hook (dirnamep) - char **dirnamep; -{ - char *ldirname, *retdir; - int n, ldlen; - - ldirname = *dirnamep; - - if (*ldirname == '/') - return 0; - - n = rlfe_directory_rewrite_hook (dirnamep); - if (n == 0) - return 0; - - ldirname = *dirnamep; - ldlen = (ldirname && *ldirname) ? strlen (ldirname) : 0; - - if (ldlen == 0 || ldirname[ldlen - 1] != '/') - { - retdir = (char *)malloc (ldlen + 3); - if (retdir == 0) - return 0; - if (ldlen) - strcpy (retdir, ldirname); - else - retdir[ldlen++] = '.'; - retdir[ldlen] = '/'; - retdir[ldlen+1] = '\0'; - free (ldirname); - - *dirnamep = retdir; - } - - DPRINT1("rl_directory_completion_hook returns %s\n", retdir); - return 1; -} - -static char * -rlfe_filename_completion_function (text, state) - const char *text; - int state; -{ - static DIR *directory; - static char *filename = (char *)NULL; - static char *dirname = (char *)NULL, *ud = (char *)NULL; - static int flen, udlen; - char *temp; - struct dirent *dentry; - - if (state == 0) - { - if (directory) - { - closedir (directory); - directory = 0; - } - FREE (dirname); - FREE (filename); - FREE (ud); - - if (text && *text) - STRDUP (filename, text); - else - { - filename = malloc(1); - if (filename == 0) - return ((char *)NULL); - filename[0] = '\0'; - } - dirname = (text && *text) ? strdup (text) : strdup ("."); - if (dirname == 0) - return ((char *)NULL); - - temp = strrchr (dirname, '/'); - if (temp) - { - strcpy (filename, ++temp); - *temp = '\0'; - } - else - { - dirname[0] = '.'; - dirname[1] = '\0'; - } - - STRDUP (ud, dirname); - udlen = strlen (ud); - - rlfe_directory_completion_hook (&dirname); - - directory = opendir (dirname); - flen = strlen (filename); - - rl_filename_completion_desired = 1; - } - - dentry = 0; - while (directory && (dentry = readdir (directory))) - { - if (flen == 0) - { - if (DOT_OR_DOTDOT(dentry->d_name) == 0) - break; - } - else - { - if ((dentry->d_name[0] == filename[0]) && - (strlen (dentry->d_name) >= flen) && - (strncmp (filename, dentry->d_name, flen) == 0)) - break; - } - } - - if (dentry == 0) - { - if (directory) - { - closedir (directory); - directory = 0; - } - FREE (dirname); - FREE (filename); - FREE (ud); - dirname = filename = ud = 0; - return ((char *)NULL); - } - - if (ud == 0 || (ud[0] == '.' && ud[1] == '\0')) - temp = strdup (dentry->d_name); - else - { - temp = malloc (1 + udlen + strlen (dentry->d_name)); - strcpy (temp, ud); - strcpy (temp + udlen, dentry->d_name); - } - return (temp); -} |