File: domacro.c

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/*
 * Copyright (c) 1985 Regents of the University of California.
 * All rights reserved.
 *
 * 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.
 */

/*
 * from: @(#)domacro.c	1.8 (Berkeley) 9/28/90
 */
char domacro_rcsid[] = 
  "$Id: domacro.c,v 1.4 1996/08/14 23:27:28 dholland Exp $";

#include <errno.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "ftp_var.h"
#include "main.h"

static char *append(char *p, const char *s) {
	size_t slen = strlen(s);

	INTOFF;
	obstack_blank(&lineobstack, slen);
	INTON;
	memcpy(p, s, slen);
	return p + slen;
}

void
domacro(int argc, char *argv[])
{
	int margc;
	char *marg;
	char **margv;
	register int i, j;
	register char *cp1, *cp2;
	int count = 2, loopflg = 0;
	char *line2;
	struct cmd *c;
	size_t len;

	if (argc < 2 && !another(&argc, &argv, "macro name")) {
		printf("Usage: %s macro_name.\n", argv[0]);
		code = -1;
		return;
	}
	for (i = 0; i < macnum; ++i) {
		if (!strncmp(argv[1], macros[i].mac_name, 9)) {
			break;
		}
	}
	if (i == macnum) {
		printf("'%s' macro not found.\n", argv[1]);
		code = -1;
		return;
	}
	line2 = line;
TOP:
	cp1 = macros[i].mac_start;
	while (cp1 != macros[i].mac_end) {
		while (isspace(*cp1)) {
			cp1++;
		}
		len = strlen(cp1) + 1;
		INTOFF;
		obstack_blank(&lineobstack, len);
		INTON;
		cp2 = obstack_base(&lineobstack);
		while (*cp1 != '\0') {
		      switch(*cp1) {
		   	    case '\\':
				 *cp2++ = *++cp1;
				 break;
			    case '$':
				 if (isdigit(*(cp1+1))) {
				    j = 0;
				    while (isdigit(*++cp1)) {
					  j = 10*j +  *cp1 - '0';
				    }
				    cp1--;
				    if (argc - 2 >= j) {
					cp2 = append(cp2, argv[j+1]);
				    }
				    break;
				 }
				 if (*(cp1+1) == 'i') {
					loopflg = 1;
					cp1++;
					if (count < argc) {
					    cp2 = append(cp2, argv[count]);
					}
					break;
				}
				/* intentional drop through */
			    default:
				*cp2++ = *cp1;
				break;
		      }
		      if (*cp1 != '\0') {
			 cp1++;
		      }
		}
		*cp2 = '\0';
		line = obstack_finish(&lineobstack);
		margv = makeargv(&margc, &marg);
		c = getcmd(margv[0]);
		if (c == (struct cmd *)-1) {
			printf("?Ambiguous command\n");
			code = -1;
		}
		else if (c == NULL) {
			printf("?Invalid command\n");
			code = -1;
		}
		else if (c->c_conn && !connected) {
			printf("Not connected.\n");
			code = -1;
		}
		else {
			if (verbose) {
				printf("%s\n",line);
			}
			if (c->c_handler_v) c->c_handler_v(margc, margv);
			else if (c->c_handler_0) c->c_handler_0();
			else c->c_handler_1(marg);

			if (bell && c->c_bell) {
				(void) putchar('\007');
			}
			INTOFF;
			obstack_free(&lineobstack, line);
			INTON;
			line = line2;
			margv = makeargv(&margc, &marg);
			argc = margc;
			argv = margv;
		}
		if (line != line2) {
			INTOFF;
			obstack_free(&lineobstack, line);
			INTON;
		}
		if (cp1 != macros[i].mac_end) {
			cp1++;
		}
	}
	if (loopflg && ++count < argc) {
		goto TOP;
	}
	line = line2;
}