ls: cleanup part 1

1 files changed, 179 insertions, 269 deletions

diff --git a/coreutils/ls.c b/coreutils/ls.c
index 40e9228..f31a496 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -98,18 +98,18 @@ enum {
 #define TIME_ACCESS    ((1U<<24) * ENABLE_FEATURE_LS_TIMESTAMPS)
 #define TIME_MASK      ((3U<<23) * ENABLE_FEATURE_LS_TIMESTAMPS)
 
-#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
+#if ENABLE_FEATURE_LS_FOLLOWLINKS
 #define FOLLOW_LINKS   (1U<<25)
 #endif
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
+#if ENABLE_FEATURE_HUMAN_READABLE
 #define LS_DISP_HR     (1U<<26)
 #endif
 
 #define LIST_SHORT	(LIST_FILENAME)
-#define LIST_ISHORT	(LIST_INO | LIST_FILENAME)
+//#define LIST_ISHORT	(LIST_INO | LIST_FILENAME)
 #define LIST_LONG	(LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
 						LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK)
-#define LIST_ILONG	(LIST_INO | LIST_LONG)
+//#define LIST_ILONG	(LIST_INO | LIST_LONG)
 
 #define SPLIT_DIR      1
 #define SPLIT_FILE     0
@@ -123,22 +123,23 @@ enum {
 #endif
 
 /* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
-#ifdef CONFIG_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_COLOR
 
-static int show_color = 0;
+static int show_color;
 
 /* long option entry used only for --color, which has no short option
  * equivalent.  */
-static const struct option ls_color_opt[] =
-{
-	{"color", optional_argument, NULL, 1},
-	{NULL, 0, NULL, 0}
+static const struct option ls_color_opt[] = {
+	{ "color", optional_argument, NULL, 1 },
+	{ NULL, 0, NULL, 0 }
 };
 
 #define COLOR(mode)	("\000\043\043\043\042\000\043\043"\
 			 "\000\000\044\000\043\000\000\040" [TYPEINDEX(mode)])
 #define ATTR(mode)	("\00\00\01\00\01\00\01\00"\
 			 "\00\00\01\00\01\00\00\01" [TYPEINDEX(mode)])
+#else
+enum { show_color = 0 };
 #endif
 
 /*
@@ -149,9 +150,7 @@ struct dnode {			/* the basic node */
 	char *fullname;		/* the dir entry name */
 	int   allocated;
 	struct stat dstat;	/* the file stat info */
-#ifdef CONFIG_SELINUX
-	security_context_t sid;
-#endif
+	USE_SELINUX(security_context_t sid;)
 	struct dnode *next;	/* point at the next node */
 };
 typedef struct dnode dnode_t;
@@ -160,14 +159,16 @@ static struct dnode **list_dir(const char *);
 static struct dnode **dnalloc(int);
 static int list_single(struct dnode *);
 
-static unsigned int all_fmt;
+static unsigned all_fmt;
 
-#ifdef CONFIG_FEATURE_AUTOWIDTH
-static unsigned terminal_width = TERMINAL_WIDTH;
+#if ENABLE_FEATURE_AUTOWIDTH
 static unsigned tabstops = COLUMN_GAP;
+static unsigned terminal_width = TERMINAL_WIDTH;
 #else
-#define tabstops COLUMN_GAP
-#define terminal_width TERMINAL_WIDTH
+enum {
+	tabstops = COLUMN_GAP,
+	terminal_width = TERMINAL_WIDTH,
+};
 #endif
 
 static int status = EXIT_SUCCESS;
@@ -176,15 +177,12 @@ static struct dnode *my_stat(char *fullname, char *name)
 {
 	struct stat dstat;
 	struct dnode *cur;
-#ifdef CONFIG_SELINUX
-	security_context_t sid=NULL;
-#endif
+	USE_SELINUX(security_context_t sid = NULL;)
 
-#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
-	if (all_fmt & FOLLOW_LINKS) {
-#ifdef CONFIG_SELINUX
+	if (ENABLE_FEATURE_LS_FOLLOWLINKS && (all_fmt & FOLLOW_LINKS)) {
+#if ENABLE_SELINUX
 		if (is_selinux_enabled())  {
-			 getfilecon(fullname,&sid);
+			 getfilecon(fullname, &sid);
 		}
 #endif
 		if (stat(fullname, &dstat)) {
@@ -192,12 +190,10 @@ static struct dnode *my_stat(char *fullname, char *name)
 			status = EXIT_FAILURE;
 			return 0;
 		}
-	} else
-#endif
-	{
-#ifdef CONFIG_SELINUX
-		if  (is_selinux_enabled()) {
-		  lgetfilecon(fullname,&sid);
+	} else {
+#if ENABLE_SELINUX
+		if (is_selinux_enabled()) {
+			lgetfilecon(fullname,&sid);
 		}
 #endif
 		if (lstat(fullname, &dstat)) {
@@ -207,24 +203,21 @@ static struct dnode *my_stat(char *fullname, char *name)
 		}
 	}
 
-	cur = (struct dnode *) xmalloc(sizeof(struct dnode));
+	cur = xmalloc(sizeof(struct dnode));
 	cur->fullname = fullname;
 	cur->name = name;
 	cur->dstat = dstat;
-#ifdef CONFIG_SELINUX
-	cur->sid = sid;
-#endif
+	USE_SELINUX(cur->sid = sid;)
 	return cur;
 }
 
 /*----------------------------------------------------------------------*/
-#ifdef CONFIG_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_COLOR
 static char fgcolor(mode_t mode)
 {
 	/* Check wheter the file is existing (if so, color it red!) */
-	if (errno == ENOENT) {
+	if (errno == ENOENT)
 		return '\037';
-	}
 	if (S_ISREG(mode) && (mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
 		return COLOR(0xF000);	/* File is executable ... */
 	return COLOR(mode);
@@ -240,7 +233,7 @@ static char bgcolor(mode_t mode)
 #endif
 
 /*----------------------------------------------------------------------*/
-#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined(CONFIG_FEATURE_LS_COLOR)
+#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
 static char append_char(mode_t mode)
 {
 	if (!(all_fmt & LIST_FILETYPE))
@@ -257,25 +250,28 @@ static char append_char(mode_t mode)
 
 /*----------------------------------------------------------------------*/
 
-#define countdirs(A,B) count_dirs((A), (B), 1)
-#define countsubdirs(A,B) count_dirs((A), (B), 0)
+#define countdirs(A, B) count_dirs((A), (B), 1)
+#define countsubdirs(A, B) count_dirs((A), (B), 0)
 
 static int count_dirs(struct dnode **dn, int nfiles, int notsubdirs)
 {
 	int i, dirs;
 
-	if (dn == NULL || nfiles < 1)
-		return (0);
+	if (!dn)
+		return 0;
 	dirs = 0;
 	for (i = 0; i < nfiles; i++) {
-		if (S_ISDIR(dn[i]->dstat.st_mode)
-			&& (notsubdirs ||
-			((dn[i]->name[0] != '.') || (dn[i]->name[1]
-						&& ((dn[i]->name[1] != '.')
-						|| dn[i]->name[2])))))
+		char *name;
+		if (!S_ISDIR(dn[i]->dstat.st_mode))
+			continue;
+		name = dn[i]->name;
+		if (notsubdirs
+		 || name[0]!='.' || (name[1] && (name[1]!='.' || name[2]))
+		) {
 			dirs++;
+		}
 	}
-	return (dirs);
+	return dirs;
 }
 
 static int countfiles(struct dnode **dnp)
@@ -284,27 +280,24 @@ static int countfiles(struct dnode **dnp)
 	struct dnode *cur;
 
 	if (dnp == NULL)
-		return (0);
+		return 0;
 	nfiles = 0;
 	for (cur = dnp[0]; cur->next != NULL; cur = cur->next)
 		nfiles++;
 	nfiles++;
-	return (nfiles);
+	return nfiles;
 }
 
 /* get memory to hold an array of pointers */
 static struct dnode **dnalloc(int num)
 {
-	struct dnode **p;
-
 	if (num < 1)
-		return (NULL);
+		return NULL;
 
-	p = (struct dnode **) xzalloc(num * sizeof(struct dnode *));
-	return (p);
+	return xzalloc(num * sizeof(struct dnode *));
 }
 
-#ifdef CONFIG_FEATURE_LS_RECURSIVE
+#if ENABLE_FEATURE_LS_RECURSIVE
 static void dfree(struct dnode **dnp, int nfiles)
 {
 	int i;
@@ -314,14 +307,14 @@ static void dfree(struct dnode **dnp, int nfiles)
 
 	for (i = 0; i < nfiles; i++) {
 		struct dnode *cur = dnp[i];
-		if(cur->allocated)
+		if (cur->allocated)
 			free(cur->fullname);	/* free the filename */
 		free(cur);		/* free the dnode */
 	}
 	free(dnp);			/* free the array holding the dnode pointers */
 }
 #else
-#define dfree(...)
+#define dfree(...) do {} while(0)
 #endif
 
 static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
@@ -330,7 +323,7 @@ static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
 	struct dnode **dnp;
 
 	if (dn == NULL || nfiles < 1)
-		return (NULL);
+		return NULL;
 
 	/* count how many dirs and regular files there are */
 	if (which == SPLIT_SUBDIR)
@@ -347,29 +340,29 @@ static struct dnode **splitdnarray(struct dnode **dn, int nfiles, int which)
 	/* copy the entrys into the file or dir array */
 	for (d = i = 0; i < nfiles; i++) {
 		if (S_ISDIR(dn[i]->dstat.st_mode)) {
-			if (which & (SPLIT_DIR|SPLIT_SUBDIR)) {
-				if ((which & SPLIT_DIR)
-					|| ((dn[i]->name[0] != '.')
-						|| (dn[i]->name[1]
-							&& ((dn[i]->name[1] != '.')
-								|| dn[i]->name[2])))) {
-									dnp[d++] = dn[i];
-								}
+			char *name;
+			if (!(which & (SPLIT_DIR|SPLIT_SUBDIR)))
+				continue;
+			name = dn[i]->name;
+			if ((which & SPLIT_DIR)
+			 || name[0]!='.' || (name[1] && (name[1]!='.' || name[2]))
+			) {
+				dnp[d++] = dn[i];
 			}
 		} else if (!(which & (SPLIT_DIR|SPLIT_SUBDIR))) {
 			dnp[d++] = dn[i];
 		}
 	}
-	return (dnp);
+	return dnp;
 }
 
 /*----------------------------------------------------------------------*/
-#ifdef CONFIG_FEATURE_LS_SORTFILES
+#if ENABLE_FEATURE_LS_SORTFILES
 static int sortcmp(const void *a, const void *b)
 {
 	struct dnode *d1 = *(struct dnode **)a;
 	struct dnode *d2 = *(struct dnode **)b;
-	unsigned int sort_opts = all_fmt & SORT_MASK;
+	unsigned sort_opts = all_fmt & SORT_MASK;
 	int dif;
 
 	dif = 0;			/* assume SORT_NAME */
@@ -396,7 +389,7 @@ static int sortcmp(const void *a, const void *b)
 	if (all_fmt & SORT_ORDER_REVERSE) {
 		dif = -dif;
 	}
-	return (dif);
+	return dif;
 }
 
 /*----------------------------------------------------------------------*/
@@ -406,7 +399,7 @@ static void dnsort(struct dnode **dn, int size)
 }
 #else
 #define sortcmp(a, b) 0
-#define dnsort(dn, size)
+#define dnsort(dn, size) do {} while(0)
 #endif
 
 
@@ -427,7 +420,7 @@ static void showfiles(struct dnode **dn, int nfiles)
 		/* find the longest file name-  use that as the column width */
 		for (i = 0; i < nfiles; i++) {
 			int len = strlen(dn[i]->name) +
-#ifdef CONFIG_SELINUX
+#if ENABLE_SELINUX
 			((all_fmt & LIST_CONTEXT) ? 33 : 0) +
 #endif
 			((all_fmt & LIST_INO) ? 8 : 0) +
@@ -457,14 +450,12 @@ static void showfiles(struct dnode **dn, int nfiles)
 			if (i < nfiles) {
 				if (column > 0) {
 					nexttab -= column;
-					while (nexttab--) {
-						putchar(' ');
-						column++;
-					}
-			}
+					printf("%*s", nexttab, "");
+					column += nexttab;
+				}
 				nexttab = column + column_width;
 				column += list_single(dn[i]);
-		}
+			}
 		}
 		putchar('\n');
 		column = 0;
@@ -523,14 +514,14 @@ static struct dnode **list_dir(const char *path)
 	int i, nfiles;
 
 	if (path == NULL)
-		return (NULL);
+		return NULL;
 
 	dn = NULL;
 	nfiles = 0;
 	dir = warn_opendir(path);
 	if (dir == NULL) {
 		status = EXIT_FAILURE;
-		return (NULL);	/* could not open the dir */
+		return NULL;	/* could not open the dir */
 	}
 	while ((entry = readdir(dir)) != NULL) {
 		char *fullname;
@@ -547,8 +538,10 @@ static struct dnode **list_dir(const char *path)
 		}
 		fullname = concat_path_file(path, entry->d_name);
 		cur = my_stat(fullname, strrchr(fullname, '/') + 1);
-		if (!cur)
+		if (!cur) {
+			// FIXME: free(fullname); ?
 			continue;
+		}
 		cur->allocated = 1;
 		cur->next = dn;
 		dn = cur;
@@ -560,14 +553,14 @@ static struct dnode **list_dir(const char *path)
 	   ** allocate memory for an array to hold dnode pointers
 	 */
 	if (dn == NULL)
-		return (NULL);
+		return NULL;
 	dnp = dnalloc(nfiles);
 	for (i = 0, cur = dn; i < nfiles; i++) {
 		dnp[i] = cur;	/* save pointer to node in array */
 		cur = cur->next;
 	}
 
-	return (dnp);
+	return dnp;
 }
 
 /*----------------------------------------------------------------------*/
@@ -575,22 +568,22 @@ static int list_single(struct dnode *dn)
 {
 	int i, column = 0;
 
-#ifdef CONFIG_FEATURE_LS_USERNAME
+#if ENABLE_FEATURE_LS_USERNAME
 	char scratch[16];
 #endif
-#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
+#if ENABLE_FEATURE_LS_TIMESTAMPS
 	char *filetime;
 	time_t ttime, age;
 #endif
-#if defined(CONFIG_FEATURE_LS_FILETYPES) || defined (CONFIG_FEATURE_LS_COLOR)
+#if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR
 	struct stat info;
 	char append;
 #endif
 
 	if (dn->fullname == NULL)
-		return (0);
+		return 0;
 
-#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
+#if ENABLE_FEATURE_LS_TIMESTAMPS
 	ttime = dn->dstat.st_mtime;	/* the default time */
 	if (all_fmt & TIME_ACCESS)
 		ttime = dn->dstat.st_atime;
@@ -598,21 +591,17 @@ static int list_single(struct dnode *dn)
 		ttime = dn->dstat.st_ctime;
 	filetime = ctime(&ttime);
 #endif
-#ifdef CONFIG_FEATURE_LS_FILETYPES
+#if ENABLE_FEATURE_LS_FILETYPES
 	append = append_char(dn->dstat.st_mode);
 #endif
 
 	for (i = 0; i <= 31; i++) {
 		switch (all_fmt & (1 << i)) {
 		case LIST_INO:
-			column += printf("%7ld ", (long int) dn->dstat.st_ino);
+			column += printf("%7ld ", (long) dn->dstat.st_ino);
 			break;
 		case LIST_BLOCKS:
-#if _FILE_OFFSET_BITS == 64
-			column += printf("%4lld ", (long long)dn->dstat.st_blocks >> 1);
-#else
-			column += printf("%4ld ", dn->dstat.st_blocks >> 1);
-#endif
+			column += printf("%4"OFF_FMT" ", (off_t) dn->dstat.st_blocks >> 1);
 			break;
 		case LIST_MODEBITS:
 			column += printf("%-10s ", (char *) bb_mode_string(dn->dstat.st_mode));
@@ -621,7 +610,7 @@ static int list_single(struct dnode *dn)
 			column += printf("%4ld ", (long) dn->dstat.st_nlink);
 			break;
 		case LIST_ID_NAME:
-#ifdef CONFIG_FEATURE_LS_USERNAME
+#if ENABLE_FEATURE_LS_USERNAME
 			bb_getpwuid(scratch, dn->dstat.st_uid, sizeof(scratch));
 			printf("%-8.8s ", scratch);
 			bb_getgrgid(scratch, dn->dstat.st_gid, sizeof(scratch));
@@ -638,22 +627,15 @@ static int list_single(struct dnode *dn)
 				column += printf("%4d, %3d ", (int) major(dn->dstat.st_rdev),
 					   (int) minor(dn->dstat.st_rdev));
 			} else {
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
-				if (all_fmt & LS_DISP_HR) {
+				if (ENABLE_FEATURE_HUMAN_READABLE && (all_fmt & LS_DISP_HR)) {
 					column += printf("%9s ",
-							make_human_readable_str(dn->dstat.st_size, 1, 0));
-				} else
-#endif
-				{
-#if _FILE_OFFSET_BITS == 64
-					column += printf("%9lld ", (long long) dn->dstat.st_size);
-#else
-					column += printf("%9ld ", dn->dstat.st_size);
-#endif
+						make_human_readable_str(dn->dstat.st_size, 1, 0));
+				} else {
+					column += printf("%9"OFF_FMT" ", (off_t) dn->dstat.st_size);
 				}
 			}
 			break;
-#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
+#if ENABLE_FEATURE_LS_TIMESTAMPS
 		case LIST_FULLTIME:
 			printf("%24.24s ", filetime);
 			column += 25;
@@ -672,7 +654,7 @@ static int list_single(struct dnode *dn)
 			}
 			break;
 #endif
-#ifdef CONFIG_SELINUX
+#if ENABLE_SELINUX
 		case LIST_CONTEXT:
 			{
 				char context[80];
@@ -692,19 +674,15 @@ static int list_single(struct dnode *dn)
 			break;
 #endif
 		case LIST_FILENAME:
-#ifdef CONFIG_FEATURE_LS_COLOR
 			errno = 0;
 			if (show_color && !lstat(dn->fullname, &info)) {
 				printf("\033[%d;%dm", bgcolor(info.st_mode),
 					   fgcolor(info.st_mode));
 			}
-#endif
 			column += printf("%s", dn->name);
-#ifdef CONFIG_FEATURE_LS_COLOR
 			if (show_color) {
 				printf("\033[0m");
 			}
-#endif
 			break;
 		case LIST_SYMLINK:
 			if (S_ISLNK(dn->dstat.st_mode)) {
@@ -717,24 +695,20 @@ static int list_single(struct dnode *dn)
 						append = append_char(info.st_mode);
 					}
 #endif
-#ifdef CONFIG_FEATURE_LS_COLOR
 					if (show_color) {
 						errno = 0;
 						printf("\033[%d;%dm", bgcolor(info.st_mode),
 							   fgcolor(info.st_mode));
 					}
-#endif
 					column += printf("%s", lpath) + 4;
-#ifdef CONFIG_FEATURE_LS_COLOR
 					if (show_color) {
 						printf("\033[0m");
 					}
-#endif
 					free(lpath);
 				}
 			}
 			break;
-#ifdef CONFIG_FEATURE_LS_FILETYPES
+#if ENABLE_FEATURE_LS_FILETYPES
 		case LIST_FILETYPE:
 			if (append != '\0') {
 				printf("%1c", append);
@@ -759,57 +733,15 @@ static int list_single(struct dnode *dn)
 /* "[-]K", SELinux mandated options, busybox optionally supports */
 /* "[-]e", I think we made this one up */
 
-#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
-# define LS_STR_TIMESTAMPS	"cetu"
-#else
-# define LS_STR_TIMESTAMPS	""
-#endif
-
-#ifdef CONFIG_FEATURE_LS_FILETYPES
-# define LS_STR_FILETYPES	"Fp"
-#else
-# define LS_STR_FILETYPES	""
-#endif
-
-#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
-# define LS_STR_FOLLOW_LINKS	"L"
-#else
-# define LS_STR_FOLLOW_LINKS	""
-#endif
-
-#ifdef CONFIG_FEATURE_LS_RECURSIVE
-# define LS_STR_RECURSIVE	"R"
-#else
-# define LS_STR_RECURSIVE	""
-#endif
-
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
-# define LS_STR_HUMAN_READABLE	"h"
-#else
-# define LS_STR_HUMAN_READABLE	""
-#endif
-
-#ifdef CONFIG_SELINUX
-# define LS_STR_SELINUX	"K"
-#else
-# define LS_STR_SELINUX	""
-#endif
-
-#ifdef CONFIG_FEATURE_AUTOWIDTH
-# define LS_STR_AUTOWIDTH	"T:w:"
-#else
-# define LS_STR_AUTOWIDTH	""
-#endif
-
-static const char ls_options[]="Cadil1gnsxAk" \
-	LS_STR_TIMESTAMPS \
-	USE_FEATURE_LS_SORTFILES("SXrv") \
-	LS_STR_FILETYPES \
-	LS_STR_FOLLOW_LINKS \
-	LS_STR_RECURSIVE \
-	LS_STR_HUMAN_READABLE \
-	LS_STR_SELINUX \
-	LS_STR_AUTOWIDTH;
+static const char ls_options[] = "Cadil1gnsxAk"
+	USE_FEATURE_LS_TIMESTAMPS("cetu")
+	USE_FEATURE_LS_SORTFILES("SXrv")
+	USE_FEATURE_LS_FILETYPES("Fp")
+	USE_FEATURE_LS_FOLLOWLINKS("L")
+	USE_FEATURE_LS_RECURSIVE("R")
+	USE_FEATURE_HUMAN_READABLE("h")
+	USE_SELINUX("K")
+	USE_FEATURE_AUTOWIDTH("T:w:");
 
 #define LIST_MASK_TRIGGER	0
 #define STYLE_MASK_TRIGGER	STYLE_MASK
@@ -817,52 +749,52 @@ static const char ls_options[]="Cadil1gnsxAk" \
 #define DISP_MASK_TRIGGER	DISP_ROWS
 
 static const unsigned opt_flags[] = {
-	LIST_SHORT | STYLE_COLUMNS,	/* C */
-	DISP_HIDDEN | DISP_DOT,		/* a */
-	DISP_NOLIST,				/* d */
-	LIST_INO,					/* i */
-	LIST_LONG | STYLE_LONG,		/* l - remember LS_DISP_HR in mask! */
-	LIST_SHORT | STYLE_SINGLE,	/* 1 */
-	0,							/* g - ingored */
-	LIST_ID_NUMERIC,			/* n */
-	LIST_BLOCKS,				/* s */
-	DISP_ROWS,					/* x */
-	DISP_HIDDEN,				/* A */
-#ifdef CONFIG_SELINUX
-	LIST_CONTEXT,				/* k */
+	LIST_SHORT | STYLE_COLUMNS, /* C */
+	DISP_HIDDEN | DISP_DOT,     /* a */
+	DISP_NOLIST,                /* d */
+	LIST_INO,                   /* i */
+	LIST_LONG | STYLE_LONG,     /* l - remember LS_DISP_HR in mask! */
+	LIST_SHORT | STYLE_SINGLE,  /* 1 */
+	0,                          /* g - ingored */
+	LIST_ID_NUMERIC,            /* n */
+	LIST_BLOCKS,                /* s */
+	DISP_ROWS,                  /* x */
+	DISP_HIDDEN,                /* A */
+#if ENABLE_SELINUX
+	LIST_CONTEXT,               /* k */
 #else
-	0,							/* k - ingored */
+	0,                          /* k - ingored */
 #endif
-#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
-	TIME_CHANGE | (ENABLE_FEATURE_LS_SORTFILES * SORT_CTIME),	/* c */
-	LIST_FULLTIME,				/* e */
-	ENABLE_FEATURE_LS_SORTFILES * SORT_MTIME,	/* t */
-	TIME_ACCESS | (ENABLE_FEATURE_LS_SORTFILES * SORT_ATIME),	/* u */
+#if ENABLE_FEATURE_LS_TIMESTAMPS
+	TIME_CHANGE | (ENABLE_FEATURE_LS_SORTFILES * SORT_CTIME),   /* c */
+	LIST_FULLTIME,              /* e */
+	ENABLE_FEATURE_LS_SORTFILES * SORT_MTIME,   /* t */
+	TIME_ACCESS | (ENABLE_FEATURE_LS_SORTFILES * SORT_ATIME),   /* u */
 #endif
-#ifdef CONFIG_FEATURE_LS_SORTFILES
-	SORT_SIZE,					/* S */
-	SORT_EXT,					/* X */
-	SORT_ORDER_REVERSE,			/* r */
-	SORT_VERSION,				/* v */
+#if ENABLE_FEATURE_LS_SORTFILES
+	SORT_SIZE,                  /* S */
+	SORT_EXT,                   /* X */
+	SORT_ORDER_REVERSE,         /* r */
+	SORT_VERSION,               /* v */
 #endif
-#ifdef CONFIG_FEATURE_LS_FILETYPES
-	LIST_FILETYPE | LIST_EXEC,	/* F */
-	LIST_FILETYPE,				/* p */
+#if ENABLE_FEATURE_LS_FILETYPES
+	LIST_FILETYPE | LIST_EXEC,  /* F */
+	LIST_FILETYPE,              /* p */
 #endif
-#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
-	FOLLOW_LINKS,				/* L */
+#if ENABLE_FEATURE_LS_FOLLOWLINKS
+	FOLLOW_LINKS,               /* L */
 #endif
-#ifdef CONFIG_FEATURE_LS_RECURSIVE
-	DISP_RECURSIVE,				/* R */
+#if ENABLE_FEATURE_LS_RECURSIVE
+	DISP_RECURSIVE,             /* R */
 #endif
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
-	LS_DISP_HR,					/* h */
+#if ENABLE_FEATURE_HUMAN_READABLE
+	LS_DISP_HR,                 /* h */
 #endif
-#ifdef CONFIG_SELINUX
+#if ENABLE_SELINUX
 	LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
 #endif
-#ifdef CONFIG_FEATURE_AUTOWIDTH
-       0, 0,                    /* T, w - ignored */
+#if ENABLE_FEATURE_AUTOWIDTH
+	0, 0,                    /* T, w - ignored */
 #endif
 	(1U<<31)
 };
@@ -885,110 +817,89 @@ int ls_main(int argc, char **argv)
 	int ac;
 	int i;
 	char **av;
-#ifdef CONFIG_FEATURE_AUTOWIDTH
+#if ENABLE_FEATURE_AUTOWIDTH
 	char *tabstops_str = NULL;
 	char *terminal_width_str = NULL;
 #endif
-#ifdef CONFIG_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_COLOR
 	char *color_opt;
 #endif
 
 	all_fmt = LIST_SHORT |
 		(ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_ORDER_FORWARD));
 
-#ifdef CONFIG_FEATURE_AUTOWIDTH
+#if ENABLE_FEATURE_AUTOWIDTH
 	/* Obtain the terminal width.  */
 	get_terminal_width_height(STDOUT_FILENO, &terminal_width, NULL);
 	/* Go one less... */
 	terminal_width--;
 #endif
 
-#ifdef CONFIG_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_COLOR
 	applet_long_options = ls_color_opt;
 #endif
 
 	/* process options */
-#ifdef CONFIG_FEATURE_AUTOWIDTH
+#if ENABLE_FEATURE_AUTOWIDTH
 	opt = getopt32(argc, argv, ls_options, &tabstops_str, &terminal_width_str
-#ifdef CONFIG_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_COLOR
 		, &color_opt
 #endif
 		);
-	if (tabstops_str) {
+	if (tabstops_str)
 		tabstops = xatou(tabstops_str);
-	}
-	if (terminal_width_str) {
+	if (terminal_width_str)
 		terminal_width = xatou(terminal_width_str);
-	}
 #else
 	opt = getopt32(argc, argv, ls_options
-#ifdef CONFIG_FEATURE_LS_COLOR
+#if ENABLE_FEATURE_LS_COLOR
 		, &color_opt
 #endif
 		);
 #endif
 	for (i = 0; opt_flags[i] != (1U<<31); i++) {
 		if (opt & (1 << i)) {
-			unsigned int flags = opt_flags[i];
+			unsigned flags = opt_flags[i];
 
-			if (flags & LIST_MASK_TRIGGER) {
+			if (flags & LIST_MASK_TRIGGER)
 				all_fmt &= ~LIST_MASK;
-			}
-			if (flags & STYLE_MASK_TRIGGER) {
+			if (flags & STYLE_MASK_TRIGGER)
 				all_fmt &= ~STYLE_MASK;
-			}
-			if (ENABLE_FEATURE_LS_SORTFILES && (flags & SORT_MASK_TRIGGER)) {
+			if (ENABLE_FEATURE_LS_SORTFILES && (flags & SORT_MASK_TRIGGER))
 				all_fmt &= ~SORT_MASK;
-			}
-			if (flags & DISP_MASK_TRIGGER) {
+			if (flags & DISP_MASK_TRIGGER)
 				all_fmt &= ~DISP_MASK;
-			}
-			if (flags & TIME_MASK) {
+			if (flags & TIME_MASK)
 				all_fmt &= ~TIME_MASK;
-			}
-			if (flags & LIST_CONTEXT) {
+			if (flags & LIST_CONTEXT)
 				all_fmt |= STYLE_SINGLE;
-			}
-#ifdef CONFIG_FEATURE_HUMAN_READABLE
-			if (opt == 'l') {
+			if (ENABLE_FEATURE_HUMAN_READABLE && opt == 'l')
 				all_fmt &= ~LS_DISP_HR;
-			}
-#endif
 			all_fmt |= flags;
 		}
 	}
 
-#ifdef CONFIG_FEATURE_LS_COLOR
-	{
-		/* find color bit value - last position for short getopt */
-
-#if CONFIG_FEATURE_LS_COLOR_IS_DEFAULT
-		char *p;
-
-		if ((p = getenv ("LS_COLORS")) != NULL &&
-			(*p == '\0' || (strcmp(p, "none") == 0))) {
-			;
-		} else if (isatty(STDOUT_FILENO)) {
+#if ENABLE_FEATURE_LS_COLOR
+	/* find color bit value - last position for short getopt */
+	if (ENABLE_FEATURE_LS_COLOR_IS_DEFAULT && isatty(STDOUT_FILENO)) {
+		char *p = getenv("LS_COLORS");
+		/* LS_COLORS is unset, or (not empty && not "none") ? */
+		if (!p || (p[0] && strcmp(p, "none")))
+			show_color = 1;
+	}
+	if (opt & (1 << i)) {  /* next flag after short options */
+		if (!color_opt || !strcmp("always", color_opt))
+			show_color = 1;
+		else if (color_opt && !strcmp("never", color_opt))
+			show_color = 0;
+		else if (color_opt && !strcmp("auto", color_opt) && isatty(STDOUT_FILENO))
 			show_color = 1;
-		}
-#endif
-
-		if((opt & (1 << i))) {  /* next flag after short options */
-			if (color_opt == NULL || strcmp("always", color_opt) == 0)
-				show_color = 1;
-			else if (color_opt != NULL && strcmp("never", color_opt) == 0)
-				show_color = 0;
-			else if (color_opt != NULL && strcmp("auto", color_opt) == 0 && isatty(STDOUT_FILENO))
-				show_color = 1;
-		}
 	}
 #endif
 
 	/* sort out which command line options take precedence */
-#ifdef CONFIG_FEATURE_LS_RECURSIVE
-	if (all_fmt & DISP_NOLIST)
+	if (ENABLE_FEATURE_LS_RECURSIVE && (all_fmt & DISP_NOLIST))
 		all_fmt &= ~DISP_RECURSIVE;	/* no recurse if listing only dir */
-#endif
 	if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
 		if (all_fmt & TIME_CHANGE)
 			all_fmt = (all_fmt & ~SORT_MASK) | SORT_CTIME;
@@ -997,10 +908,9 @@ int ls_main(int argc, char **argv)
 	}
 	if ((all_fmt & STYLE_MASK) != STYLE_LONG) /* only for long list */
 		all_fmt &= ~(LIST_ID_NUMERIC|LIST_FULLTIME|LIST_ID_NAME|LIST_ID_NUMERIC);
-#ifdef CONFIG_FEATURE_LS_USERNAME
-	if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
-		all_fmt &= ~LIST_ID_NAME;	/* don't list names if numeric uid */
-#endif
+	if (ENABLE_FEATURE_LS_USERNAME)
+		if ((all_fmt & STYLE_MASK) == STYLE_LONG && (all_fmt & LIST_ID_NUMERIC))
+			all_fmt &= ~LIST_ID_NAME; /* don't list names if numeric uid */
 
 	/* choose a display format */
 	if (!(all_fmt & STYLE_MASK))
@@ -1015,7 +925,7 @@ int ls_main(int argc, char **argv)
 	 */
 	ac = argc - optind;	/* how many cmd line args are left */
 	if (ac < 1) {
-		static const char * const dotdir[] = { "." };
+		static const char *const dotdir[] = { "." };
 
 		av = (char **) dotdir;
 		ac = 1;
@@ -1027,7 +937,7 @@ int ls_main(int argc, char **argv)
 	if (ac > 1)
 		all_fmt |= DISP_DIRNAME;	/* 2 or more items? label directories */
 
-	/* stuff the command line file names into an dnode array */
+	/* stuff the command line file names into a dnode array */
 	dn = NULL;
 	for (oi = 0; oi < ac; oi++) {
 		cur = my_stat(av[oi], av[oi]);
@@ -1040,8 +950,8 @@ int ls_main(int argc, char **argv)
 	}
 
 	/* now that we know how many files there are
-	   ** allocate memory for an array to hold dnode pointers
-	 */
+	** allocate memory for an array to hold dnode pointers
+	*/
 	dnp = dnalloc(nfiles);
 	for (i = 0, cur = dn; i < nfiles; i++) {
 		dnp[i] = cur;	/* save pointer to node in array */
@@ -1072,5 +982,5 @@ int ls_main(int argc, char **argv)
 	}
 	if (ENABLE_FEATURE_CLEAN_UP)
 		dfree(dnp, nfiles);
-	return (status);
+	return status;
 }