138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
/* $NetBSD: run.c,v 1.2 1997/09/27 00:09:29 phil Exp $ */
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/*
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* Copyright 1997 Piermont Information Systems Inc.
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* All rights reserved.
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*
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* Written by Philip A. Nelson for Piermont Information Systems Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software develooped for the NetBSD Project by
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* Piermont Information Systems Inc.
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* 4. The name of Piermont Information Systems Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/* run.c -- routines to interact with other programs. */
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "defs.h"
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#ifdef DEBUG
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#define Xsystem(y) printf ("%s\n", y), 0
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#else
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#define Xsystem(y) system(y)
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#endif
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#define BUFSIZE 4096
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int
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collect (int kind, char **buffer, char *name, ...)
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{
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size_t nbytes; /* Number of bytes in buffer. */
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size_t fbytes; /* Number of bytes in file. */
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struct stat st; /* stat information. */
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int ch;
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FILE *f;
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char fileorcmd [STRSIZE];
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va_list ap;
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va_start (ap, name);
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vsnprintf (fileorcmd, STRSIZE, name, ap);
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va_end (ap);
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if (kind == T_FILE) {
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/* Get the file information. */
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if (stat (fileorcmd, &st)) {
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*buffer = NULL;
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return -1;
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}
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fbytes = (size_t)st.st_size;
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/* Open the file. */
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f = fopen (fileorcmd, "r");
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if (f == NULL) {
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*buffer = NULL;
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return -1;
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}
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} else {
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/* Open the program. */
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f = popen (fileorcmd, "r");
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if (f == NULL) {
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*buffer = NULL;
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return -1;
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}
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fbytes = BUFSIZE;
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}
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if (fbytes == 0)
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fbytes = BUFSIZE;
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/* Allocate the buffer size. */
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*buffer = (char *) malloc (fbytes + 1);
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if (!*buffer)
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return -1;
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/* Read the buffer. */
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nbytes = 0;
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while (nbytes < fbytes && (ch = fgetc(f)) != EOF)
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(*buffer)[nbytes++] = ch;
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(*buffer)[nbytes] = 0;
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if (kind == T_FILE)
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fclose(f);
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else
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pclose(f);
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return nbytes;
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}
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/* Run a program ... using printf style to format the command! */
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int run_prog (char *cmd, ...)
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{
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char command [STRSIZE];
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va_list ap;
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int ret;
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va_start (ap, cmd);
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(void) vsnprintf (command, STRSIZE, cmd, ap);
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va_end (ap);
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/* The following may be more than one function call. Can't just
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"return Xsystem (command);" */
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ret = Xsystem (command);
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return ret;
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}
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