From ccc1699e3ec5ae0ec43a24fcad58c110f6f8360c Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Mon, 23 Jan 2017 20:43:06 +0100 Subject: ls: get rid of opt_flags[], handle -l1c through option_mask32 function old new delta display_single 885 888 +3 scan_and_display_dirs_recur 496 486 -10 opt_flags 11 - -11 ls_main 618 553 -65 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/2 up/down: 3/-86) Total: -83 bytes Signed-off-by: Denys Vlasenko --- coreutils/ls.c | 100 +++++++++++++++++++-------------------------------------- 1 file changed, 33 insertions(+), 67 deletions(-) (limited to 'coreutils/ls.c') diff --git a/coreutils/ls.c b/coreutils/ls.c index ac142c36b..f90784a1a 100644 --- a/coreutils/ls.c +++ b/coreutils/ls.c @@ -194,16 +194,8 @@ SPLIT_DIR = 1, SPLIT_SUBDIR = 2, /* Bits in G.all_fmt: */ -LIST_LONG = 1 << 0, /* long listing (-l and equivalents) */ - /* what files will be displayed */ -DISP_DIRNAME = 1 << 1, /* 2 or more items? label directories */ - -/* what is the overall style of the listing */ -STYLE_COLUMNAR = 1 << 2, /* many records per line */ -STYLE_LONG = 2 << 2, /* one record per line, extended info */ -STYLE_SINGLE = 3 << 2, /* one record per line */ -STYLE_MASK = STYLE_SINGLE, +DISP_DIRNAME = 1 << 9, /* 2 or more items? label directories */ }; /* -Cadi1l Std options, busybox always supports */ @@ -231,11 +223,11 @@ static const char ls_options[] ALIGN1 = IF_FEATURE_LS_WIDTH("T:w:") /* 2, 29 */ ; enum { - //OPT_C = (1 << 0), + OPT_C = (1 << 0), OPT_a = (1 << 1), OPT_d = (1 << 2), OPT_i = (1 << 3), - //OPT_1 = (1 << 4), + OPT_1 = (1 << 4), OPT_l = (1 << 5), OPT_g = (1 << 6), OPT_n = (1 << 7), @@ -288,23 +280,6 @@ enum { OPT_color = (1 << OPTBIT_color ) * ENABLE_FEATURE_LS_COLOR, }; -/* TODO: simple toggles may be stored as OPT_xxx bits instead */ -static const uint8_t opt_flags[] = { - STYLE_COLUMNAR, /* C */ - 0, /* a */ - 0, /* d */ - 0, /* i */ - STYLE_SINGLE, /* 1 */ - LIST_LONG | STYLE_LONG, /* l - by keeping it after -1, "ls -l -1" ignores -1 */ - LIST_LONG | STYLE_LONG, /* g (don't show owner) - handled via OPT_g. assumes l */ - LIST_LONG | STYLE_LONG, /* n (numeris uid/gid) - handled via OPT_n. assumes l */ - 0, /* s */ - STYLE_COLUMNAR, /* x */ - 0xff - /* options after -x are not processed through opt_flags */ -}; - - /* * a directory entry and its stat info */ @@ -465,8 +440,8 @@ static unsigned calc_name_len(const char *name) } /* Return the number of used columns. - * Note that only STYLE_COLUMNAR uses return value. - * STYLE_SINGLE and STYLE_LONG don't care. + * Note that only columnar output uses return value. + * -l and -1 modes don't care. * coreutils 7.2 also supports: * ls -b (--escape) = octal escapes (although it doesn't look like working) * ls -N (--literal) = not escape at all @@ -499,13 +474,14 @@ static unsigned print_name(const char *name) } /* Return the number of used columns. - * Note that only STYLE_COLUMNAR uses return value, - * STYLE_SINGLE and STYLE_LONG don't care. + * Note that only columnar output uses return value, + * -l and -1 modes don't care. */ static NOINLINE unsigned display_single(const struct dnode *dn) { unsigned column = 0; char *lpath; + int opt; #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR struct stat statbuf; char append; @@ -514,27 +490,28 @@ static NOINLINE unsigned display_single(const struct dnode *dn) #if ENABLE_FEATURE_LS_FILETYPES append = append_char(dn->dn_mode); #endif + opt = option_mask32; /* Do readlink early, so that if it fails, error message * does not appear *inside* the "ls -l" line */ lpath = NULL; - if (G.all_fmt & LIST_LONG) + if (opt & OPT_l) if (S_ISLNK(dn->dn_mode)) lpath = xmalloc_readlink_or_warn(dn->fullname); - if (option_mask32 & OPT_i) /* show inode# */ + if (opt & OPT_i) /* show inode# */ column += printf("%7llu ", (long long) dn->dn_ino); //TODO: -h should affect -s too: - if (option_mask32 & OPT_s) /* show allocated blocks */ + if (opt & OPT_s) /* show allocated blocks */ column += printf("%6"OFF_FMT"u ", (off_t) (dn->dn_blocks >> 1)); - if (G.all_fmt & LIST_LONG) { + if (opt & OPT_l) { /* long listing: show mode */ column += printf("%-10s ", (char *) bb_mode_string(dn->dn_mode)); /* long listing: show number of links */ column += printf("%4lu ", (long) dn->dn_nlink); /* long listing: show user/group */ - if (option_mask32 & OPT_n) { - if (option_mask32 & OPT_g) + if (opt & OPT_n) { + if (opt & OPT_g) column += printf("%-8u ", (int) dn->dn_gid); else column += printf("%-8u %-8u ", @@ -543,7 +520,7 @@ static NOINLINE unsigned display_single(const struct dnode *dn) } #if ENABLE_FEATURE_LS_USERNAME else { - if (option_mask32 & OPT_g) { + if (opt & OPT_g) { column += printf("%-8.8s ", get_cached_groupname(dn->dn_gid)); } else { @@ -555,11 +532,11 @@ static NOINLINE unsigned display_single(const struct dnode *dn) #endif #if ENABLE_SELINUX } - if (option_mask32 & OPT_Z) { + if (opt & OPT_Z) { column += printf("%-32s ", dn->sid ? dn->sid : "?"); freecon(dn->sid); } - if (G.all_fmt & LIST_LONG) { + if (opt & OPT_l) { #endif /* long listing: show size */ if (S_ISBLK(dn->dn_mode) || S_ISCHR(dn->dn_mode)) { @@ -567,7 +544,7 @@ static NOINLINE unsigned display_single(const struct dnode *dn) dn->dn_rdev_maj, dn->dn_rdev_min); } else { - if (option_mask32 & OPT_h) { + if (opt & OPT_h) { column += printf("%"HUMAN_READABLE_MAX_WIDTH_STR"s ", /* print size, show one fractional, use suffixes */ make_human_readable_str(dn->dn_size, 1, 0) @@ -578,7 +555,7 @@ static NOINLINE unsigned display_single(const struct dnode *dn) } #if ENABLE_FEATURE_LS_TIMESTAMPS /* long listing: show {m,c,a}time */ - if (option_mask32 & OPT_full_time) { /* --full-time */ + if (opt & OPT_full_time) { /* --full-time */ /* coreutils 8.4 ls --full-time prints: * 2009-07-13 17:49:27.000000000 +0200 * we don't show fractional seconds. @@ -624,7 +601,7 @@ static NOINLINE unsigned display_single(const struct dnode *dn) if (lpath) { printf(" -> "); #if ENABLE_FEATURE_LS_FILETYPES || ENABLE_FEATURE_LS_COLOR - if ((option_mask32 & (OPT_F|OPT_p)) + if ((opt & (OPT_F|OPT_p)) || G_show_color ) { mode_t mode = dn->dn_mode_stat; @@ -648,7 +625,7 @@ static NOINLINE unsigned display_single(const struct dnode *dn) } } #if ENABLE_FEATURE_LS_FILETYPES - if (option_mask32 & (OPT_F|OPT_p)) { + if (opt & (OPT_F|OPT_p)) { if (append) { putchar(append); column++; @@ -664,9 +641,9 @@ static void display_files(struct dnode **dn, unsigned nfiles) unsigned i, ncols, nrows, row, nc; unsigned column; unsigned nexttab; - unsigned column_width = 0; /* used only by STYLE_COLUMNAR */ + unsigned column_width = 0; /* used only by coulmnal output */ - if (G.all_fmt & STYLE_LONG) { /* STYLE_LONG or STYLE_SINGLE */ + if (option_mask32 & (OPT_l|OPT_1)) { ncols = 1; } else { /* find the longest file name, use that as the column width */ @@ -1043,9 +1020,7 @@ static void scan_and_display_dirs_recur(struct dnode **dn, int first) } subdnp = scan_one_dir((*dn)->fullname, &nfiles); #if ENABLE_DESKTOP - if ((G.all_fmt & STYLE_MASK) == STYLE_LONG - || (option_mask32 & OPT_s) - ) { + if (option_mask32 & (OPT_s|OPT_l)) { printf("total %"OFF_FMT"u\n", calculate_blocks(subdnp)); } #endif @@ -1124,8 +1099,10 @@ int ls_main(int argc UNUSED_PARAM, char **argv) /* process options */ IF_FEATURE_LS_COLOR(applet_long_options = ls_longopts;) opt_complementary = + /* -n and -g imply -l */ + "nl:gl" /* --full-time implies -l */ - IF_FEATURE_LS_TIMESTAMPS(IF_LONG_OPTS("\xff""l")) + IF_FEATURE_LS_TIMESTAMPS(IF_LONG_OPTS(":\xff""l")) /* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html: * in some pairs of opts, only last one takes effect: */ @@ -1139,7 +1116,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv) /* -w NUM: */ IF_FEATURE_LS_WIDTH(":w+"); opt = getopt32(argv, ls_options - IF_FEATURE_LS_WIDTH(, NULL, &G_terminal_width) + IF_FEATURE_LS_WIDTH(, /*-T*/ NULL, /*-w*/ &G_terminal_width) IF_FEATURE_LS_COLOR(, &color_opt) ); #if 0 /* option bits debug */ @@ -1152,16 +1129,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv) if (opt & OPT_full_time ) bb_error_msg("--full-time"); exit(0); #endif - for (i = 0; opt_flags[i] != 0xff; i++) { - if (opt & (1 << i)) { - uint32_t flags = opt_flags[i]; - - if (flags & STYLE_MASK) - G.all_fmt &= ~STYLE_MASK; - G.all_fmt |= flags; - } - } #if ENABLE_SELINUX if (opt & OPT_Z) { if (!is_selinux_enabled()) @@ -1197,7 +1165,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv) /* sort out which command line options take precedence */ if (ENABLE_FEATURE_LS_RECURSIVE && (opt & OPT_d)) option_mask32 &= ~OPT_R; /* no recurse if listing only dir */ - if ((G.all_fmt & STYLE_MASK) != STYLE_LONG) { /* not -l? */ + if (!(opt & OPT_l)) { /* not -l? */ if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) { /* when to sort by time? -t[cu] sorts by time even with -l */ /* (this is achieved by opt_flags[] element for -t) */ @@ -1210,8 +1178,8 @@ int ls_main(int argc UNUSED_PARAM, char **argv) } /* choose a display format if one was not already specified by an option */ - if (!(G.all_fmt & STYLE_MASK)) - G.all_fmt |= (isatty(STDOUT_FILENO) ? STYLE_COLUMNAR : STYLE_SINGLE); + if (!(option_mask32 & (OPT_l|OPT_1|OPT_x|OPT_C))) + option_mask32 |= (isatty(STDOUT_FILENO) ? OPT_C : OPT_1); argv += optind; if (!argv[0]) @@ -1226,9 +1194,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv) do { cur = my_stat(*argv, *argv, /* follow links on command line unless -l, -s or -F: */ - !((G.all_fmt & STYLE_MASK) == STYLE_LONG - || (option_mask32 & (OPT_s|OPT_F)) - ) + !(option_mask32 & (OPT_l|OPT_s|OPT_F)) /* ... or if -H: */ || (option_mask32 & OPT_H) /* ... or if -L, but my_stat always follows links if -L */ -- cgit v1.2.1