20060303

1 files changed, 278 insertions, 0 deletions

diff --git a/utils/test/test-Nt.c b/utils/test/test-Nt.c
new file mode 100644
index 00000000..7d2a9fa7
--- /dev/null
+++ b/utils/test/test-Nt.c
@@ -0,0 +1,278 @@
+/*
+ * POSIX standard
+ *	test expression
+ *	[ expression ]
+ */
+
+#include <lib9.h>
+#include <windows.h>
+
+#define EQ(a,b)	((tmp=a)==0?0:(strcmp(tmp,b)==0))
+
+int	ap;
+int	ac;
+char	**av;
+char	*tmp;
+
+void	synbad(char *, char *);
+int	length(char *);
+int	fsizep(char *);
+int	isdir(char *);
+int	isreg(char *);
+int	Ntisatty(int);
+int	isint(char *, int *);
+int	tio(char *, int);
+int	e(void), e1(void), e2(void), e3(void);
+
+void
+main(int argc, char *argv[])
+{
+
+	ac = argc; av = argv; ap = 1;
+	if(EQ(argv[0],"[")) {
+		if(!EQ(argv[--ac],"]"))
+			synbad("] missing","");
+	}
+	argv[ac] = 0;
+	if (ac<=1) exits("usage");
+	exits(e()?0:"false");
+}
+
+char *
+nxtarg(int mt)
+{
+	if(ap>=ac){
+		if(mt){
+			ap++;
+			return(0);
+		}
+		synbad("argument expected","");
+	}
+	return(av[ap++]);
+}
+
+int
+nxtintarg(int *pans)
+{
+	if(ap<ac && isint(av[ap], pans)){
+		ap++;
+		return 1;
+	}
+	return 0;
+}
+
+int
+e(void) {
+	int p1;
+
+	p1 = e1();
+	if (EQ(nxtarg(1), "-o")) return(p1 || e());
+	ap--;
+	return(p1);
+}
+
+int
+e1(void) {
+	int p1;
+
+	p1 = e2();
+	if (EQ(nxtarg(1), "-a")) return (p1 && e1());
+	ap--;
+	return(p1);
+}
+
+int
+e2(void) {
+	if (EQ(nxtarg(0), "!"))
+		return(!e2());
+	ap--;
+	return(e3());
+}
+
+int
+e3(void) {
+	int p1;
+	char *a;
+	char *p2;
+	int int1, int2;
+
+	a = nxtarg(0);
+	if(EQ(a, "(")) {
+		p1 = e();
+		if(!EQ(nxtarg(0), ")")) synbad(") expected","");
+		return(p1);
+	}
+
+	if(EQ(a, "-f"))
+		return(isreg(nxtarg(0)));
+
+	if(EQ(a, "-d"))
+		return(isdir(nxtarg(0)));
+
+	if(EQ(a, "-r"))
+		return(tio(nxtarg(0), 4));
+
+	if(EQ(a, "-w"))
+		return(tio(nxtarg(0), 2));
+
+	if(EQ(a, "-x"))
+		return(tio(nxtarg(0), 1));
+
+	if(EQ(a, "-e"))
+		return(tio(nxtarg(0), 0));
+
+	if(EQ(a, "-c"))
+		return(0);
+
+	if(EQ(a, "-b"))
+		return(0);
+
+	if(EQ(a, "-u"))
+		return(0);
+
+	if(EQ(a, "-g"))
+		return(0);
+
+	if(EQ(a, "-s"))
+		return(fsizep(nxtarg(0)));
+
+	if(EQ(a, "-t"))
+		if(ap>=ac || !nxtintarg(&int1))
+			return(Ntisatty(1));
+		else
+			return(Ntisatty(int1));
+
+	if(EQ(a, "-n"))
+		return(!EQ(nxtarg(0), ""));
+	if(EQ(a, "-z"))
+		return(EQ(nxtarg(0), ""));
+
+	p2 = nxtarg(1);
+	if (p2==0)
+		return(!EQ(a,""));
+	if(EQ(p2, "="))
+		return(EQ(nxtarg(0), a));
+
+	if(EQ(p2, "!="))
+		return(!EQ(nxtarg(0), a));
+
+	if(!isint(a, &int1))
+		return(!EQ(a,""));
+
+	if(nxtintarg(&int2)){
+		if(EQ(p2, "-eq"))
+			return(int1==int2);
+		if(EQ(p2, "-ne"))
+			return(int1!=int2);
+		if(EQ(p2, "-gt"))
+			return(int1>int2);
+		if(EQ(p2, "-lt"))
+			return(int1<int2);
+		if(EQ(p2, "-ge"))
+			return(int1>=int2);
+		if(EQ(p2, "-le"))
+			return(int1<=int2);
+	}
+
+	synbad("unknown operator ",p2);
+	return 0;		/* to shut ken up */
+}
+
+int
+tio(char *a, int f)
+{
+	return access (a, f) >= 0;
+}
+
+/*
+ * dirstat fails for:
+ * [drivename]:
+ * [drivename]:/
+ * <dirname>/
+ * [drivename]:<dirname>/
+ */
+int
+isdir(char *f)
+{
+	Dir *dir;
+	int	len;
+
+	len = strlen(f);
+	if (f[(len-1)] == '/') {
+		/* zap trailing '/' */
+		f[(len-1)] = '\0';
+	}
+	if (len == 2) {
+		if (f[1] == ':') {
+			return DMDIR;
+		}
+	}
+	if((dir = dirstat(f))==nil)
+		return(0);
+	return(dir->mode&DMDIR);
+}
+
+int
+isreg(char *f)
+{
+	Dir *dir;
+
+	if((dir = dirstat(f))==nil)
+		return(0);
+	return(!(dir->mode&DMDIR));
+}
+
+int
+Ntisatty(int fd)
+{
+	HANDLE h;
+
+	if(fd < 0)
+		return 0;
+
+	h = (HANDLE)_get_osfhandle(fd);
+	if(h < 0)
+		return 0;
+	return _isatty((int)h);
+}
+
+int
+fsizep(char *f)
+{
+	Dir *dir;
+
+	if((dir = dirstat(f))==nil)
+		return(0);
+	return(dir->length>0);
+}
+
+void
+synbad(char *s1, char *s2)
+{
+	int len;
+
+	write(2, "test: ", 6);
+	if ((len = strlen(s1)) != 0)
+		write(2, s1, len);
+	if ((len = strlen(s2)) != 0)
+		write(2, s2, len);
+	write(2, "\n", 1);
+	exits("bad syntax");
+}
+
+int
+length(char *s)
+{
+	char *es=s;
+	while(*es++);
+	return(es-s-1);
+}
+
+int
+isint(char *s, int *pans)
+{
+	char *ep;
+
+	*pans = strtol(s, &ep, 0);
+	return (*ep == 0);
+}