From c9ed52730b352448c7c644f6942d310dd3509bf6 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Mon, 17 Nov 2014 11:21:06 -0500
Subject: cmd: rename *.C to *.c

These were *.C back in 2003, before the 9 script, to avoid conflicts
with the system utilities. A later change renamed them, but that
change seems to have been lost during the hg->git conversion
because I ran the conversion on a case-insensitive file system.

Change-Id: Id32c99cb9571ef0e185c3cc9e8c8d6d5b48ca195
---
 src/cmd/ls.c | 308 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 308 insertions(+)
 create mode 100644 src/cmd/ls.c

(limited to 'src/cmd/ls.c')

diff --git a/src/cmd/ls.c b/src/cmd/ls.c
new file mode 100644
index 00000000..60615059
--- /dev/null
+++ b/src/cmd/ls.c
@@ -0,0 +1,308 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+#define dirbuf p9dirbuf	/* avoid conflict on sun */
+
+typedef struct NDir NDir;
+struct NDir
+{
+	Dir *d;
+	char	*prefix;
+};
+
+int	errs = 0;
+int	dflag;
+int	lflag;
+int	mflag;
+int	nflag;
+int	pflag;
+int	qflag;
+int	Qflag;
+int	rflag;
+int	sflag;
+int	tflag;
+int	uflag;
+int	Fflag;
+int	ndirbuf;
+int	ndir;
+NDir*	dirbuf;
+int	ls(char*, int);
+int	compar(NDir*, NDir*);
+char*	asciitime(long);
+char*	darwx(long);
+void	rwx(long, char*);
+void	growto(long);
+void	dowidths(Dir*);
+void	format(Dir*, char*);
+void	output(void);
+ulong	clk;
+int	swidth;			/* max width of -s size */
+int	qwidth;			/* max width of -q version */
+int	vwidth;			/* max width of dev */
+int	uwidth;			/* max width of userid */
+int	mwidth;			/* max width of muid */
+int	glwidth;		/* max width of groupid and length */
+Biobuf	bin;
+
+void
+main(int argc, char *argv[])
+{
+	int i;
+
+	Binit(&bin, 1, OWRITE);
+	ARGBEGIN{
+	case 'F':	Fflag++; break;
+	case 'd':	dflag++; break;
+	case 'l':	lflag++; break;
+	case 'm':	mflag++; break;
+	case 'n':	nflag++; break;
+	case 'p':	pflag++; break;
+	case 'q':	qflag++; break;
+	case 'Q':	Qflag++; break;
+	case 'r':	rflag++; break;
+	case 's':	sflag++; break;
+	case 't':	tflag++; break;
+	case 'u':	uflag++; break;
+	default:	fprint(2, "usage: ls [-dlmnpqrstuFQ] [file ...]\n");
+			exits("usage");
+	}ARGEND
+
+	doquote = needsrcquote;
+	quotefmtinstall();
+	fmtinstall('M', dirmodefmt);
+
+	if(lflag)
+		clk = time(0);
+	if(argc == 0)
+		errs = ls(".", 0);
+	else for(i=0; i<argc; i++)
+		errs |= ls(argv[i], 1);
+	output();
+	exits(errs? "errors" : 0);
+}
+
+int
+ls(char *s, int multi)
+{
+	int fd;
+	long i, n;
+	char *p;
+	Dir *db;
+
+	for(;;) {
+		p = utfrrune(s, '/');
+		if(p == 0 || p[1] != 0 || p == s)
+			break;
+		*p = 0;
+	}
+	db = dirstat(s);
+	if(db == nil){
+    error:
+		fprint(2, "ls: %s: %r\n", s);
+		return 1;
+	}
+	if(db->qid.type&QTDIR && dflag==0){
+		free(db);
+		db = nil;
+		output();
+		fd = open(s, OREAD);
+		if(fd == -1)
+			goto error;
+		n = dirreadall(fd, &db);
+		if(n < 0)
+			goto error;
+		growto(ndir+n);
+		for(i=0; i<n; i++){
+			dirbuf[ndir+i].d = db+i;
+			dirbuf[ndir+i].prefix = multi? s : 0;
+		}
+		ndir += n;
+		close(fd);
+		output();
+	}else{
+		growto(ndir+1);
+		dirbuf[ndir].d = db;
+		dirbuf[ndir].prefix = 0;
+		p = utfrrune(s, '/');
+		if(p){
+			dirbuf[ndir].prefix = s;
+			*p = 0;
+			/* restore original name; don't use result of stat */
+			dirbuf[ndir].d->name = strdup(p+1);
+		}
+		ndir++;
+	}
+	return 0;
+}
+
+void
+output(void)
+{
+	int i;
+	char buf[4096];
+	char *s;
+
+	if(!nflag)
+		qsort(dirbuf, ndir, sizeof dirbuf[0], (int (*)(const void*, const void*))compar);
+	for(i=0; i<ndir; i++)
+		dowidths(dirbuf[i].d);
+	for(i=0; i<ndir; i++) {
+		if(!pflag && (s = dirbuf[i].prefix)) {
+			if(strcmp(s, "/") ==0)	/* / is a special case */
+				s = "";
+			sprint(buf, "%s/%s", s, dirbuf[i].d->name);
+			format(dirbuf[i].d, buf);
+		} else
+			format(dirbuf[i].d, dirbuf[i].d->name);
+	}
+	ndir = 0;
+	Bflush(&bin);
+}
+
+void
+dowidths(Dir *db)
+{
+	char buf[256];
+	int n;
+
+	if(sflag) {
+		n = sprint(buf, "%llud", (db->length+1023)/1024);
+		if(n > swidth)
+			swidth = n;
+	}
+	if(qflag) {
+		n = sprint(buf, "%lud", db->qid.vers);
+		if(n > qwidth)
+			qwidth = n;
+	}
+	if(mflag) {
+		n = snprint(buf, sizeof buf, "[%s]", db->muid);
+		if(n > mwidth)
+			mwidth = n;
+	}
+	if(lflag) {
+		n = sprint(buf, "%ud", db->dev);
+		if(n > vwidth)
+			vwidth = n;
+		n = strlen(db->uid);
+		if(n > uwidth)
+			uwidth = n;
+		n = sprint(buf, "%llud", db->length);
+		n += strlen(db->gid);
+		if(n > glwidth)
+			glwidth = n;
+	}
+}
+
+char*
+fileflag(Dir *db)
+{
+	if(Fflag == 0)
+		return "";
+	if(QTDIR & db->qid.type)
+		return "/";
+	if(0111 & db->mode)
+		return "*";
+	return "";
+}
+
+void
+format(Dir *db, char *name)
+{
+	int i;
+
+	if(sflag)
+		Bprint(&bin, "%*llud ",
+			swidth, (db->length+1023)/1024);
+	if(mflag){
+		Bprint(&bin, "[%s] ", db->muid);
+		for(i=2+strlen(db->muid); i<mwidth; i++)
+			Bprint(&bin, " ");
+	}
+	if(qflag)
+		Bprint(&bin, "(%.16llux %*lud %.2ux) ",
+			db->qid.path,
+			qwidth, db->qid.vers,
+			db->qid.type);
+	if(lflag)
+		Bprint(&bin,
+			"%M %C %*ud %*s %s %*llud %s ",
+			db->mode, db->type,
+			vwidth, db->dev,
+			-uwidth, db->uid,
+			db->gid,
+			(int)(glwidth-strlen(db->gid)), db->length,
+			asciitime(uflag? db->atime : db->mtime));
+	Bprint(&bin,
+		Qflag? "%s%s\n" : "%q%s\n",
+		name, fileflag(db));
+}
+
+void
+growto(long n)
+{
+	if(n <= ndirbuf)
+		return;
+	ndirbuf = n;
+	dirbuf=(NDir *)realloc(dirbuf, ndirbuf*sizeof(NDir));
+	if(dirbuf == 0){
+		fprint(2, "ls: malloc fail\n");
+		exits("malloc fail");
+	}		
+}
+
+int
+compar(NDir *a, NDir *b)
+{
+	long i;
+	Dir *ad, *bd;
+
+	ad = a->d;
+	bd = b->d;
+
+	if(tflag){
+		if(uflag)
+			i = bd->atime-ad->atime;
+		else
+			i = bd->mtime-ad->mtime;
+	}else{
+		if(a->prefix && b->prefix){
+			i = strcmp(a->prefix, b->prefix);
+			if(i == 0)
+				i = strcmp(ad->name, bd->name);
+		}else if(a->prefix){
+			i = strcmp(a->prefix, bd->name);
+			if(i == 0)
+				i = 1;	/* a is longer than b */
+		}else if(b->prefix){
+			i = strcmp(ad->name, b->prefix);
+			if(i == 0)
+				i = -1;	/* b is longer than a */
+		}else
+			i = strcmp(ad->name, bd->name);
+	}
+	if(i == 0)
+		i = (ad<bd? -1 : 1);
+	if(rflag)
+		i = -i;
+	return i;
+}
+
+char*
+asciitime(long l)
+{
+	static char buf[32];
+	char *t;
+
+	t = ctime(l);
+	/* 6 months in the past or a day in the future */
+	if(l<clk-180L*24*60*60 || clk+24L*60*60<l){
+		memmove(buf, t+4, 7);		/* month and day */
+		memmove(buf+7, t+23, 5);		/* year */
+	}else
+		memmove(buf, t+4, 12);		/* skip day of week */
+	buf[12] = 0;
+	return buf;
+}
+
-- 
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