envinit.c

来自「speech signal process tools」· C语言 代码 · 共 78 行

#include <stdio.h>
#include <ctype.h>

#define	SH	1
#define	CSH	2
#define	DEFSH	CSH

FILE *	fopen();

main(argc, argv)
int argc;
char **argv;
{
	register int shell;
	register char *myname, *efile;

	myname = *argv;
	if (argc < 2 || argc > 3) {
		fprintf(stderr, "usage: %s envfile [ sh | csh ]\n", myname);
		exit(1);
	}
	efile = *++argv;
	if (argc == 3)
		if (!strcmp(*++argv, "sh"))
			shell = SH;
		else if (!strcmp(*argv, "csh"))
			shell = CSH;
		else {
			fprintf(stderr, "usage: %s envfile [ sh | csh ]\n", myname);
			exit(1);
		}
	else
		shell = DEFSH;
	envinit(efile, shell);
	exit(0);
}

envinit(efile, shell)
register char *efile;
register int shell;
{
	char buf[BUFSIZ];
	register int first;
	register char *lval, *rval, *p;
	register FILE *fp;

	if (!(fp = fopen(efile, "r"))) {
		perror(efile);
		exit(2);
	}
	first = 1;
	while (fgets(buf, BUFSIZ, fp)) {
		if (*buf == '#' || *buf == '\n')
			continue;
		for (lval = buf; isspace(*lval); lval++)
			;
		for (rval = lval; !isspace(*rval); rval++)
			;
		*rval++ = (char)0;
		for ( ; isspace(*rval); rval++)
			;
		for (p = rval; !isspace(*p); p++)
			;
		*p = (char)0;
		if (!first)
			printf(" ; ");
		else
			first = 0;
		if (shell == SH) {
			printf("%s=%s ; ", lval, rval);
			printf("export %s", lval);
		}
		else
			printf("setenv %s %s", lval, rval);
	}
	putchar('\n');
}