diff options
Diffstat (limited to 'main/editline/read.c')
-rw-r--r-- | main/editline/read.c | 558 |
1 files changed, 0 insertions, 558 deletions
diff --git a/main/editline/read.c b/main/editline/read.c deleted file mode 100644 index 80d51da4a..000000000 --- a/main/editline/read.c +++ /dev/null @@ -1,558 +0,0 @@ -/* $NetBSD: read.c,v 1.21 2002/03/18 16:00:57 christos Exp $ */ - -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Christos Zoulas of Cornell University. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include "config.h" -#if !defined(lint) && !defined(SCCSID) -#if 0 -static char sccsid[] = "@(#)read.c 8.1 (Berkeley) 6/4/93"; -#else -__RCSID("$NetBSD: read.c,v 1.21 2002/03/18 16:00:57 christos Exp $"); -#endif -#endif /* not lint && not SCCSID */ - -/* - * read.c: Clean this junk up! This is horrible code. - * Terminal read functions - */ -#include <errno.h> -#include <unistd.h> -#include <stdlib.h> -#include "el.h" - -#define OKCMD -1 - -private int read__fixio(int, int); -private int read_preread(EditLine *); -private int read_char(EditLine *, char *); -private int read_getcmd(EditLine *, el_action_t *, char *); - -/* read_init(): - * Initialize the read stuff - */ -protected int -read_init(EditLine *el) -{ - /* builtin read_char */ - el->el_read.read_char = read_char; - return 0; -} - - -/* el_read_setfn(): - * Set the read char function to the one provided. - * If it is set to EL_BUILTIN_GETCFN, then reset to the builtin one. - */ -protected int -el_read_setfn(EditLine *el, el_rfunc_t rc) -{ - el->el_read.read_char = (rc == EL_BUILTIN_GETCFN) ? read_char : rc; - return 0; -} - - -/* el_read_getfn(): - * return the current read char function, or EL_BUILTIN_GETCFN - * if it is the default one - */ -protected el_rfunc_t -el_read_getfn(EditLine *el) -{ - return (el->el_read.read_char == read_char) ? - EL_BUILTIN_GETCFN : el->el_read.read_char; -} - - -#ifdef DEBUG_EDIT -private void -read_debug(EditLine *el) -{ - - if (el->el_line.cursor > el->el_line.lastchar) - (void) fprintf(el->el_errfile, "cursor > lastchar\r\n"); - if (el->el_line.cursor < el->el_line.buffer) - (void) fprintf(el->el_errfile, "cursor < buffer\r\n"); - if (el->el_line.cursor > el->el_line.limit) - (void) fprintf(el->el_errfile, "cursor > limit\r\n"); - if (el->el_line.lastchar > el->el_line.limit) - (void) fprintf(el->el_errfile, "lastchar > limit\r\n"); - if (el->el_line.limit != &el->el_line.buffer[EL_BUFSIZ - 2]) - (void) fprintf(el->el_errfile, "limit != &buffer[EL_BUFSIZ-2]\r\n"); -} -#endif /* DEBUG_EDIT */ - - -/* read__fixio(): - * Try to recover from a read error - */ -/* ARGSUSED */ -private int -read__fixio(int fd, int e) -{ - - switch (e) { - case -1: /* Make sure that the code is reachable */ - -#ifdef EWOULDBLOCK - case EWOULDBLOCK: -#ifndef TRY_AGAIN -#define TRY_AGAIN -#endif -#endif /* EWOULDBLOCK */ - -#if defined(POSIX) && defined(EAGAIN) -#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN - case EAGAIN: -#ifndef TRY_AGAIN -#define TRY_AGAIN -#endif -#endif /* EWOULDBLOCK && EWOULDBLOCK != EAGAIN */ -#endif /* POSIX && EAGAIN */ - - e = 0; -#ifdef TRY_AGAIN -#if defined(F_SETFL) && defined(O_NDELAY) - if ((e = fcntl(fd, F_GETFL, 0)) == -1) - return (-1); - - if (fcntl(fd, F_SETFL, e & ~O_NDELAY) == -1) - return (-1); - else - e = 1; -#endif /* F_SETFL && O_NDELAY */ - -#ifdef FIONBIO - { - int zero = 0; - - if (ioctl(fd, FIONBIO, (ioctl_t) & zero) == -1) - return (-1); - else - e = 1; - } -#endif /* FIONBIO */ - -#endif /* TRY_AGAIN */ - return (e ? 0 : -1); - - case EINTR: - return (0); - - default: - return (-1); - } -} - - -/* read_preread(): - * Try to read the stuff in the input queue; - */ -private int -read_preread(EditLine *el) -{ - int chrs = 0; - - if (el->el_chared.c_macro.nline) { - el_free((ptr_t) el->el_chared.c_macro.nline); - el->el_chared.c_macro.nline = NULL; - } - if (el->el_tty.t_mode == ED_IO) - return (0); - -#ifdef FIONREAD - (void) ioctl(el->el_infd, FIONREAD, (ioctl_t) & chrs); - if (chrs > 0) { - char buf[EL_BUFSIZ]; - - chrs = read(el->el_infd, buf, - (size_t) MIN(chrs, EL_BUFSIZ - 1)); - if (chrs > 0) { - buf[chrs] = '\0'; - el->el_chared.c_macro.nline = strdup(buf); - el_push(el, el->el_chared.c_macro.nline); - } - } -#endif /* FIONREAD */ - - return (chrs > 0); -} - - -/* el_push(): - * Push a macro - */ -public void -el_push(EditLine *el, char *str) -{ - c_macro_t *ma = &el->el_chared.c_macro; - - if (str != NULL && ma->level + 1 < EL_MAXMACRO) { - ma->level++; - ma->macro[ma->level] = str; - } else { - term_beep(el); - term__flush(); - } -} - - -/* read_getcmd(): - * Return next command from the input stream. - */ -private int -read_getcmd(EditLine *el, el_action_t *cmdnum, char *ch) -{ - el_action_t cmd = ED_UNASSIGNED; - int num; - - while (cmd == ED_UNASSIGNED || cmd == ED_SEQUENCE_LEAD_IN) { - if ((num = el_getc(el, ch)) != 1) /* if EOF or error */ - return (num); - -#ifdef KANJI - if ((*ch & 0200)) { - el->el_state.metanext = 0; - cmd = CcViMap[' ']; - break; - } else -#endif /* KANJI */ - - if (el->el_state.metanext) { - el->el_state.metanext = 0; - *ch |= 0200; - } - cmd = el->el_map.current[(unsigned char) *ch]; - if (cmd == ED_SEQUENCE_LEAD_IN) { - key_value_t val; - switch (key_get(el, ch, &val)) { - case XK_CMD: - cmd = val.cmd; - break; - case XK_STR: - el_push(el, val.str); - break; -#ifdef notyet - case XK_EXE: - /* XXX: In the future to run a user function */ - RunCommand(val.str); - break; -#endif - default: - EL_ABORT((el->el_errfile, "Bad XK_ type \n")); - break; - } - } - if (el->el_map.alt == NULL) - el->el_map.current = el->el_map.key; - } - *cmdnum = cmd; - return (OKCMD); -} - - -/* read_char(): - * Read a character from the tty. - * XXX This routine is the default, but what you are actually looking for - * is in main/asterisk.c, in ast_el_read_char(). XXX - */ -private int -read_char(EditLine *el, char *cp) -{ - int num_read; - int tried = 0; - - while ((num_read = read(el->el_infd, cp, 1)) == -1) - if (!tried && read__fixio(el->el_infd, errno) == 0) - tried = 1; - else { - *cp = '\0'; - return (-1); - } - - return (num_read); -} - - -/* el_getc(): - * Read a character - */ -public int -el_getc(EditLine *el, char *cp) -{ - int num_read; - c_macro_t *ma = &el->el_chared.c_macro; - - term__flush(); - for (;;) { - if (ma->level < 0) { - if (!read_preread(el)) - break; - } - if (ma->level < 0) - break; - - if (*ma->macro[ma->level] == 0) { - ma->level--; - continue; - } - *cp = *ma->macro[ma->level]++ & 0377; - if (*ma->macro[ma->level] == 0) { /* Needed for QuoteMode - * On */ - ma->level--; - } - return (1); - } - -#ifdef DEBUG_READ - (void) fprintf(el->el_errfile, "Turning raw mode on\n"); -#endif /* DEBUG_READ */ - if (tty_rawmode(el) < 0)/* make sure the tty is set up correctly */ - return (0); - -#ifdef DEBUG_READ - (void) fprintf(el->el_errfile, "Reading a character\n"); -#endif /* DEBUG_READ */ - /* See main/asterisk.c: ast_el_read_char() */ - num_read = (*el->el_read.read_char)(el, cp); -#ifdef DEBUG_READ - (void) fprintf(el->el_errfile, "Got it %c\n", *cp); -#endif /* DEBUG_READ */ - return (num_read); -} - - -public const char * -el_gets(EditLine *el, int *nread) -{ - int retval; - el_action_t cmdnum = 0; - int num; /* how many chars we have read at NL */ - char ch; -#ifdef FIONREAD - c_macro_t *ma = &el->el_chared.c_macro; -#endif /* FIONREAD */ - - if (el->el_flags & HANDLE_SIGNALS) - sig_set(el); - - if (el->el_flags & NO_TTY) { - char *cp = el->el_line.buffer; - size_t idx; - - while ((*el->el_read.read_char)(el, cp) == 1) { - /* make sure there is space for next character */ - if (cp + 1 >= el->el_line.limit) { - idx = (cp - el->el_line.buffer); - if (!ch_enlargebufs(el, 2)) - break; - cp = &el->el_line.buffer[idx]; - } - cp++; - if (cp[-1] == '\r' || cp[-1] == '\n') - break; - } - - el->el_line.cursor = el->el_line.lastchar = cp; - *cp = '\0'; - if (nread) - *nread = el->el_line.cursor - el->el_line.buffer; - return (el->el_line.buffer); - } - re_clear_display(el); /* reset the display stuff */ - ch_reset(el); - -#ifdef FIONREAD - if (el->el_tty.t_mode == EX_IO && ma->level < 0) { - long chrs = 0; - - (void) ioctl(el->el_infd, FIONREAD, (ioctl_t) & chrs); - if (chrs == 0) { - if (tty_rawmode(el) < 0) { - if (nread) - *nread = 0; - return (NULL); - } - } - } -#endif /* FIONREAD */ - - re_refresh(el); /* print the prompt */ - - if (el->el_flags & EDIT_DISABLED) { - char *cp = el->el_line.buffer; - size_t idx; - - term__flush(); - - while ((*el->el_read.read_char)(el, cp) == 1) { - /* make sure there is space next character */ - if (cp + 1 >= el->el_line.limit) { - idx = (cp - el->el_line.buffer); - if (!ch_enlargebufs(el, 2)) - break; - cp = &el->el_line.buffer[idx]; - } - cp++; - if (cp[-1] == '\r' || cp[-1] == '\n') - break; - } - - el->el_line.cursor = el->el_line.lastchar = cp; - *cp = '\0'; - if (nread) - *nread = el->el_line.cursor - el->el_line.buffer; - return (el->el_line.buffer); - } - for (num = OKCMD; num == OKCMD;) { /* while still editing this - * line */ -#ifdef DEBUG_EDIT - read_debug(el); -#endif /* DEBUG_EDIT */ - /* if EOF or error */ - if ((num = read_getcmd(el, &cmdnum, &ch)) != OKCMD) { -#ifdef DEBUG_READ - (void) fprintf(el->el_errfile, - "Returning from el_gets %d\n", num); -#endif /* DEBUG_READ */ - break; - } - if ((int) cmdnum >= el->el_map.nfunc) { /* BUG CHECK command */ -#ifdef DEBUG_EDIT - (void) fprintf(el->el_errfile, - "ERROR: illegal command from key 0%o\r\n", ch); -#endif /* DEBUG_EDIT */ - continue; /* try again */ - } - /* now do the real command */ -#ifdef DEBUG_READ - { - el_bindings_t *b; - for (b = el->el_map.help; b->name; b++) - if (b->func == cmdnum) - break; - if (b->name) - (void) fprintf(el->el_errfile, - "Executing %s\n", b->name); - else - (void) fprintf(el->el_errfile, - "Error command = %d\n", cmdnum); - } -#endif /* DEBUG_READ */ - retval = (*el->el_map.func[cmdnum]) (el, ch); - - /* save the last command here */ - el->el_state.lastcmd = cmdnum; - - /* use any return value */ - switch (retval) { - case CC_CURSOR: - el->el_state.argument = 1; - el->el_state.doingarg = 0; - re_refresh_cursor(el); - break; - - case CC_REDISPLAY: - re_clear_lines(el); - re_clear_display(el); - /* FALLTHROUGH */ - - case CC_REFRESH: - el->el_state.argument = 1; - el->el_state.doingarg = 0; - re_refresh(el); - break; - - case CC_REFRESH_BEEP: - el->el_state.argument = 1; - el->el_state.doingarg = 0; - re_refresh(el); - term_beep(el); - break; - - case CC_NORM: /* normal char */ - el->el_state.argument = 1; - el->el_state.doingarg = 0; - break; - - case CC_ARGHACK: /* Suggested by Rich Salz */ - /* <rsalz@pineapple.bbn.com> */ - break; /* keep going... */ - - case CC_EOF: /* end of file typed */ - num = 0; - break; - - case CC_NEWLINE: /* normal end of line */ - num = el->el_line.lastchar - el->el_line.buffer; - break; - - case CC_FATAL: /* fatal error, reset to known state */ -#ifdef DEBUG_READ - (void) fprintf(el->el_errfile, - "*** editor fatal ERROR ***\r\n\n"); -#endif /* DEBUG_READ */ - /* put (real) cursor in a known place */ - re_clear_display(el); /* reset the display stuff */ - ch_reset(el); /* reset the input pointers */ - re_refresh(el); /* print the prompt again */ - el->el_state.argument = 1; - el->el_state.doingarg = 0; - break; - - case CC_ERROR: - default: /* functions we don't know about */ -#ifdef DEBUG_READ - (void) fprintf(el->el_errfile, - "*** editor ERROR ***\r\n\n"); -#endif /* DEBUG_READ */ - el->el_state.argument = 1; - el->el_state.doingarg = 0; - term_beep(el); - term__flush(); - break; - } - } - - /* make sure the tty is set up correctly */ - (void) tty_cookedmode(el); - term__flush(); /* flush any buffered output */ - if (el->el_flags & HANDLE_SIGNALS) - sig_clr(el); - if (nread) - *nread = num; - return (num ? el->el_line.buffer : NULL); -} |