/*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Rodney Ruddock of the University of Guelph. * * 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. */ #ifndef lint static char sccsid[] = "@(#)bang.c 8.1 (Berkeley) 5/31/93"; #endif /* not lint */ #include <sys/types.h> #include <limits.h> #include <regex.h> #include <setjmp.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #ifdef DBI #include <db.h> #endif #include "ed.h" #include "extern.h" /* * Execute a command in sh (and always sh). For those wondering the * proper name for '!' _is_ bang. */ void bang(inputt, errnum) FILE *inputt; int *errnum; { static int l_cnt_last_pos=0; /* "!!", l_shellcmd offset */ static char l_shellcmd[FILENAME_LEN]; /* "!!" */ static char l_shellcmd2[FILENAME_LEN]; /* "!!" */ int l_cnt = 0, l_esc=0, l_flag=0; memcpy(l_shellcmd, l_shellcmd2, FILENAME_LEN); for (;;) { ss = getc(inputt); l_esc = 0; if (ss == '\\') { ss = getc(inputt); l_esc = 1; } if (((!l_esc) && (ss == '\n')) || (ss == EOF)) { l_shellcmd[l_cnt] = '\0'; break; } else if ((ss == '!') && (l_cnt == 0) && (l_esc == 0)) { if (l_cnt_last_pos == 0) { strcpy(help_msg, "no remembered command"); *errnum = -1; return; } l_cnt = l_cnt_last_pos; l_flag = 1; } else if ((ss == '%') && (l_esc == 0)) { if (filename_current) { l_shellcmd[l_cnt] = '\0'; strcat(l_shellcmd, filename_current); l_cnt = l_cnt + strlen(filename_current); } else { strcpy(help_msg, "no current filename"); *errnum = -1; return; } } else l_shellcmd[l_cnt++] = ss; if (l_cnt >= FILENAME_LEN) { strcpy(help_msg, "shell command too long"); *errnum = -1; return; } } if (l_flag) printf("%s\n", l_shellcmd); system(l_shellcmd); if (explain_flag > 0) /* for the -s option */ printf("!\n"); l_cnt_last_pos = l_cnt; memcpy(l_shellcmd2, l_shellcmd, FILENAME_LEN); *errnum = 0; }