/* $NetBSD: test.c,v 1.18 2005/06/01 11:37:52 lukem 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. 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. */ /* * test.c: A little test program */ #include #include #include #include #include #include #include #include #include "histedit.h" /* from src/sys/sys/cdefs.h */ #ifndef __UNCONST # define __UNCONST(a) ((void *)(unsigned long)(const void *)(a)) #endif static int continuation = 0; volatile sig_atomic_t gotsig = 0; static unsigned char complete(EditLine *, int); int main(int, char **); static char *prompt(EditLine *); static void sig(int); static char * prompt(EditLine *el) { static char a[] = "Edit$ "; static char b[] = "Edit> "; return (continuation ? b : a); } static void sig(int i) { gotsig = i; } static unsigned char complete(EditLine *el, int ch) { DIR *dd = opendir("."); struct dirent *dp; const char* ptr; const LineInfo *lf = el_line(el); int len; /* * Find the last word */ for (ptr = lf->cursor - 1; !isspace((unsigned char)*ptr) && ptr > lf->buffer; ptr--) continue; len = lf->cursor - ++ptr; for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) { if (len > strlen(dp->d_name)) continue; if (strncmp(dp->d_name, ptr, len) == 0) { closedir(dd); if (el_insertstr(el, &dp->d_name[len]) == -1) return (CC_ERROR); else return (CC_REFRESH); } } closedir(dd); return (CC_ERROR); } int main(int argc, char *argv[]) { EditLine *el = NULL; int num; const char *buf; Tokenizer *tok; #if 0 int lastevent = 0; #endif int ncontinuation; History *hist; HistEvent ev; (void) signal(SIGINT, sig); (void) signal(SIGQUIT, sig); (void) signal(SIGHUP, sig); (void) signal(SIGTERM, sig); hist = history_init(); /* Init the builtin history */ /* Remember 100 events */ history(hist, &ev, H_SETSIZE, 100); tok = tok_init(NULL); /* Initialize the tokenizer */ /* Initialize editline */ el = el_init(*argv, stdin, stdout, stderr); el_set(el, EL_EDITOR, "vi"); /* Default editor is vi */ el_set(el, EL_SIGNAL, 1); /* Handle signals gracefully */ el_set(el, EL_PROMPT, prompt); /* Set the prompt function */ /* Tell editline to use this history interface */ el_set(el, EL_HIST, history, hist); /* Add a user-defined function */ el_set(el, EL_ADDFN, "ed-complete", "Complete argument", complete); /* Bind tab to it */ el_set(el, EL_BIND, "^I", "ed-complete", NULL); /* * Bind j, k in vi command mode to previous and next line, instead * of previous and next history. */ el_set(el, EL_BIND, "-a", "k", "ed-prev-line", NULL); el_set(el, EL_BIND, "-a", "j", "ed-next-line", NULL); /* * Source the user's defaults file. */ el_source(el, NULL); while ((buf = el_gets(el, &num)) != NULL && num != 0) { int ac, cc, co; #ifdef DEBUG int i; #endif const char **av; const LineInfo *li; li = el_line(el); #ifdef DEBUG (void) fprintf(stderr, "==> got %d %s", num, buf); (void) fprintf(stderr, " > li `%.*s_%.*s'\n", (li->cursor - li->buffer), li->buffer, (li->lastchar - 1 - li->cursor), (li->cursor >= li->lastchar) ? "" : li->cursor); #endif if (gotsig) { (void) fprintf(stderr, "Got signal %d.\n", gotsig); gotsig = 0; el_reset(el); } if (!continuation && num == 1) continue; ac = cc = co = 0; ncontinuation = tok_line(tok, li, &ac, &av, &cc, &co); if (ncontinuation < 0) { (void) fprintf(stderr, "Internal error\n"); continuation = 0; continue; } #ifdef DEBUG (void) fprintf(stderr, " > nc %d ac %d cc %d co %d\n", ncontinuation, ac, cc, co); #endif #if 0 if (continuation) { /* * Append to the right event in case the user * moved around in history. */ if (history(hist, &ev, H_SET, lastevent) == -1) err(1, "%d: %s", lastevent, ev.str); history(hist, &ev, H_ADD , buf); } else { history(hist, &ev, H_ENTER, buf); lastevent = ev.num; } #else /* Simpler */ history(hist, &ev, continuation ? H_APPEND : H_ENTER, buf); #endif continuation = ncontinuation; ncontinuation = 0; if (continuation) continue; #ifdef DEBUG for (i = 0; i < ac; i++) { (void) fprintf(stderr, " > arg# %2d ", i); if (i != cc) (void) fprintf(stderr, "`%s'\n", av[i]); else (void) fprintf(stderr, "`%.*s_%s'\n", co, av[i], av[i] + co); } #endif if (strcmp(av[0], "history") == 0) { int rv; switch (ac) { case 1: for (rv = history(hist, &ev, H_LAST); rv != -1; rv = history(hist, &ev, H_PREV)) (void) fprintf(stdout, "%4d %s", ev.num, ev.str); break; case 2: if (strcmp(av[1], "clear") == 0) history(hist, &ev, H_CLEAR); else goto badhist; break; case 3: if (strcmp(av[1], "load") == 0) history(hist, &ev, H_LOAD, av[2]); else if (strcmp(av[1], "save") == 0) history(hist, &ev, H_SAVE, av[2]); break; badhist: default: (void) fprintf(stderr, "Bad history arguments\n"); break; } } else if (el_parse(el, ac, av) == -1) { switch (fork()) { case 0: execvp(av[0], (char *const *)__UNCONST(av)); perror(av[0]); _exit(1); /*NOTREACHED*/ break; case -1: perror("fork"); break; default: if (wait(&num) == -1) perror("wait"); (void) fprintf(stderr, "Exit %x\n", num); break; } } tok_reset(tok); } el_end(el); tok_end(tok); history_end(hist); return (0); }