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Diffstat (limited to 'bin/1sh/histedit.c')
| -rw-r--r-- | bin/1sh/histedit.c | 558 |
1 files changed, 0 insertions, 558 deletions
diff --git a/bin/1sh/histedit.c b/bin/1sh/histedit.c deleted file mode 100644 index e0bda06e..00000000 --- a/bin/1sh/histedit.c +++ /dev/null @@ -1,558 +0,0 @@ -/*- - * Copyright (c) 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Kenneth Almquist. - * - * 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. 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. - */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)histedit.c 8.2 (Berkeley) 5/4/95"; -#endif -#endif /* not lint */ -#include <sys/cdefs.h> -/* $FreeBSD: releng/12.1/bin/sh/histedit.c 345613 2019-03-27 21:53:44Z jilles $ */ - -#include <sys/param.h> -#include <limits.h> -#include <paths.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -/* - * Editline and history functions (and glue). - */ -#include "shell.h" -#include "parser.h" -#include "var.h" -#include "options.h" -#include "main.h" -#include "output.h" -#include "mystring.h" -#ifndef NO_HISTORY -#include "myhistedit.h" -#include "error.h" -#include "eval.h" -#include "memalloc.h" -#include "builtins.h" - -#define MAXHISTLOOPS 4 /* max recursions through fc */ -#define DEFEDITOR "ed" /* default editor *should* be $EDITOR */ - -History *hist; /* history cookie */ -EditLine *el; /* editline cookie */ -int displayhist; -static FILE *el_in, *el_out, *el_err; - -static void history_load(const char *hf); -static void history_save(const char *hf); - -static char *fc_replace(const char *, char *, char *); -static int not_fcnumber(const char *); -static int str_to_event(const char *, int); - -/* - * Set history and editing status. Called whenever the status may - * have changed (figures out what to do). - */ -void -histedit(void) -{ - -#define editing (Eflag || Vflag) - - if (iflag) { - if (!hist) { - /* - * turn history on - */ - INTOFF; - hist = history_init(); - INTON; - - if (hist != NULL) { - sethistsize(histsizeval()); - sethistfile(histfileval()); - } else - out2fmt_flush("sh: can't initialize history\n"); - } - if (editing && !el && isatty(0)) { /* && isatty(2) ??? */ - /* - * turn editing on - */ - char *term; - - INTOFF; - if (el_in == NULL) - el_in = fdopen(0, "r"); - if (el_err == NULL) - el_err = fdopen(1, "w"); - if (el_out == NULL) - el_out = fdopen(2, "w"); - if (el_in == NULL || el_err == NULL || el_out == NULL) - goto bad; - term = lookupvar("TERM"); - if (term) - setenv("TERM", term, 1); - else - unsetenv("TERM"); - el = el_init(arg0, el_in, el_out, el_err); - if (el != NULL) { - if (hist) - el_set(el, EL_HIST, history, hist); - el_set(el, EL_PROMPT, getprompt); - el_set(el, EL_RPROMPT, getrprompt); - el_set(el, EL_ADDFN, "sh-complete", - "Filename completion", - _el_fn_complete); - } else { -bad: - out2fmt_flush("sh: can't initialize editing\n"); - } - INTON; - } else if (!editing && el) { - INTOFF; - el_end(el); - el = NULL; - INTON; - } - if (el) { - el_source(el, NULL); - if (Vflag) - el_set(el, EL_EDITOR, "vi"); - else if (Eflag) - el_set(el, EL_EDITOR, "emacs"); - el_set(el, EL_BIND, "^I", "sh-complete", NULL); - } - } else { - INTOFF; - if (el) { /* no editing if not interactive */ - el_end(el); - el = NULL; - } - if (hist) { - if (*histfileval() != '\0') - history_save(histfileval()); - history_end(hist); - hist = NULL; - } - INTON; - } -} - - -void -sethistfile(const char *hf) -{ - if (hist != NULL && hf != NULL && *hf != '\0') - history_load(hf); -} - - -static void -history_load(const char *hf) -{ - HistEvent he; - - if (history(hist, &he, H_LOAD, hf) == -1) - warning("%s: %s", he.str, hf); -} - - -static void -history_save(const char *hf) -{ - HistEvent he; - - if (history(hist, &he, H_SAVE, hf) == -1) - warning("%s: %s", he.str, hf); -} - - -void -sethistsize(const char *hs) -{ - int histsize; - HistEvent he; - - if (hist != NULL) { - if (hs == NULL || !is_number(hs)) - histsize = 100; - else - histsize = atoi(hs); - history(hist, &he, H_SETSIZE, histsize); - history(hist, &he, H_SETUNIQUE, 1); - } -} - -void -setterm(const char *term) -{ - if (rootshell && el != NULL && term != NULL) - el_set(el, EL_TERMINAL, term); -} - -int -histcmd(int argc, char **argv __unused) -{ - int ch; - const char *editor = NULL; - HistEvent he; - int lflg = 0, nflg = 0, rflg = 0, sflg = 0; - int i, retval; - const char *firststr, *laststr; - int first, last, direction; - char *pat = NULL, *repl = NULL; - static int active = 0; - struct jmploc jmploc; - struct jmploc *savehandler; - char editfilestr[PATH_MAX]; - char *volatile editfile; - FILE *efp = NULL; - int oldhistnum; - - if (hist == NULL) - error("history not active"); - - if (argc == 1) - error("missing history argument"); - - while (not_fcnumber(*argptr) && (ch = nextopt("e:lnrs")) != '\0') - switch ((char)ch) { - case 'e': - editor = shoptarg; - break; - case 'l': - lflg = 1; - break; - case 'n': - nflg = 1; - break; - case 'r': - rflg = 1; - break; - case 's': - sflg = 1; - break; - } - - savehandler = handler; - /* - * If executing... - */ - if (lflg == 0 || editor || sflg) { - lflg = 0; /* ignore */ - editfile = NULL; - /* - * Catch interrupts to reset active counter and - * cleanup temp files. - */ - if (setjmp(jmploc.loc)) { - active = 0; - if (editfile) - unlink(editfile); - handler = savehandler; - longjmp(handler->loc, 1); - } - handler = &jmploc; - if (++active > MAXHISTLOOPS) { - active = 0; - displayhist = 0; - error("called recursively too many times"); - } - /* - * Set editor. - */ - if (sflg == 0) { - if (editor == NULL && - (editor = bltinlookup("FCEDIT", 1)) == NULL && - (editor = bltinlookup("EDITOR", 1)) == NULL) - editor = DEFEDITOR; - if (editor[0] == '-' && editor[1] == '\0') { - sflg = 1; /* no edit */ - editor = NULL; - } - } - } - - /* - * If executing, parse [old=new] now - */ - if (lflg == 0 && *argptr != NULL && - ((repl = strchr(*argptr, '=')) != NULL)) { - pat = *argptr; - *repl++ = '\0'; - argptr++; - } - /* - * determine [first] and [last] - */ - if (*argptr == NULL) { - firststr = lflg ? "-16" : "-1"; - laststr = "-1"; - } else if (argptr[1] == NULL) { - firststr = argptr[0]; - laststr = lflg ? "-1" : argptr[0]; - } else if (argptr[2] == NULL) { - firststr = argptr[0]; - laststr = argptr[1]; - } else - error("too many arguments"); - /* - * Turn into event numbers. - */ - first = str_to_event(firststr, 0); - last = str_to_event(laststr, 1); - - if (rflg) { - i = last; - last = first; - first = i; - } - /* - * XXX - this should not depend on the event numbers - * always increasing. Add sequence numbers or offset - * to the history element in next (diskbased) release. - */ - direction = first < last ? H_PREV : H_NEXT; - - /* - * If editing, grab a temp file. - */ - if (editor) { - int fd; - INTOFF; /* easier */ - sprintf(editfilestr, "%s/_shXXXXXX", _PATH_TMP); - if ((fd = mkstemp(editfilestr)) < 0) - error("can't create temporary file %s", editfile); - editfile = editfilestr; - if ((efp = fdopen(fd, "w")) == NULL) { - close(fd); - error("Out of space"); - } - } - - /* - * Loop through selected history events. If listing or executing, - * do it now. Otherwise, put into temp file and call the editor - * after. - * - * The history interface needs rethinking, as the following - * convolutions will demonstrate. - */ - history(hist, &he, H_FIRST); - retval = history(hist, &he, H_NEXT_EVENT, first); - for (;retval != -1; retval = history(hist, &he, direction)) { - if (lflg) { - if (!nflg) - out1fmt("%5d ", he.num); - out1str(he.str); - } else { - const char *s = pat ? - fc_replace(he.str, pat, repl) : he.str; - - if (sflg) { - if (displayhist) { - out2str(s); - flushout(out2); - } - evalstring(s, 0); - if (displayhist && hist) { - /* - * XXX what about recursive and - * relative histnums. - */ - oldhistnum = he.num; - history(hist, &he, H_ENTER, s); - /* - * XXX H_ENTER moves the internal - * cursor, set it back to the current - * entry. - */ - history(hist, &he, - H_NEXT_EVENT, oldhistnum); - } - } else - fputs(s, efp); - } - /* - * At end? (if we were to lose last, we'd sure be - * messed up). - */ - if (he.num == last) - break; - } - if (editor) { - char *editcmd; - - fclose(efp); - INTON; - editcmd = stalloc(strlen(editor) + strlen(editfile) + 2); - sprintf(editcmd, "%s %s", editor, editfile); - evalstring(editcmd, 0); /* XXX - should use no JC command */ - readcmdfile(editfile); /* XXX - should read back - quick tst */ - unlink(editfile); - } - - if (lflg == 0 && active > 0) - --active; - if (displayhist) - displayhist = 0; - handler = savehandler; - return 0; -} - -static char * -fc_replace(const char *s, char *p, char *r) -{ - char *dest; - int plen = strlen(p); - - STARTSTACKSTR(dest); - while (*s) { - if (*s == *p && strncmp(s, p, plen) == 0) { - STPUTS(r, dest); - s += plen; - *p = '\0'; /* so no more matches */ - } else - STPUTC(*s++, dest); - } - STPUTC('\0', dest); - dest = grabstackstr(dest); - - return (dest); -} - -static int -not_fcnumber(const char *s) -{ - if (s == NULL) - return (0); - if (*s == '-') - s++; - return (!is_number(s)); -} - -static int -str_to_event(const char *str, int last) -{ - HistEvent he; - const char *s = str; - int relative = 0; - int i, retval; - - retval = history(hist, &he, H_FIRST); - switch (*s) { - case '-': - relative = 1; - /*FALLTHROUGH*/ - case '+': - s++; - } - if (is_number(s)) { - i = atoi(s); - if (relative) { - while (retval != -1 && i--) { - retval = history(hist, &he, H_NEXT); - } - if (retval == -1) - retval = history(hist, &he, H_LAST); - } else { - retval = history(hist, &he, H_NEXT_EVENT, i); - if (retval == -1) { - /* - * the notion of first and last is - * backwards to that of the history package - */ - retval = history(hist, &he, last ? H_FIRST : H_LAST); - } - } - if (retval == -1) - error("history number %s not found (internal error)", - str); - } else { - /* - * pattern - */ - retval = history(hist, &he, H_PREV_STR, str); - if (retval == -1) - error("history pattern not found: %s", str); - } - return (he.num); -} - -int -bindcmd(int argc, char **argv) -{ - int ret; - FILE *old; - FILE *out; - - if (el == NULL) - error("line editing is disabled"); - - INTOFF; - - out = out1fp(); - if (out == NULL) - error("Out of space"); - - el_get(el, EL_GETFP, 1, &old); - el_set(el, EL_SETFP, 1, out); - - ret = el_parse(el, argc, (const char **)(argv)); - - el_set(el, EL_SETFP, 1, old); - - fclose(out); - - INTON; - - return ret; -} - -#else -#include "error.h" - -int -histcmd(int argc, char **argv) -{ - - error("not compiled with history support"); - /*NOTREACHED*/ - return (0); -} - -int -bindcmd(int argc, char **argv) -{ - - error("not compiled with line editing support"); - return (0); -} -#endif |