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https://github.com/sheumann/hush.git
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Use bb_getopt_ulflags, save 200-300 bytes
This commit is contained in:
Glenn L McGrath
parent
58a2e0e262
commit
792cae5f2a
244
coreutils/ls.c
244
coreutils/ls.c
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@ -808,93 +808,134 @@ static int list_single(struct dnode *dn)
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/*----------------------------------------------------------------------*/
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static const char ls_opts[] = "1AaCdgilnsx"
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#ifdef CONFIG_FEATURE_LS_FILETYPES
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"Fp"
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#endif
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#ifdef CONFIG_FEATURE_LS_RECURSIVE
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"R"
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#endif
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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"rSvX"
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#endif
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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"ecut"
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#endif
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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"L"
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#endif
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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"h"
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#endif
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"k"
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#ifdef CONFIG_SELINUX
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"K"
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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"T:w:"
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#endif
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;
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/* "[-]Cadil1", POSIX mandated options, busybox always supports */
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/* "[-]gnsx", POSIX non-mandated options, busybox always supports */
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/* "[-]Ak" GNU options, busybox always supports */
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/* "[-]FLRctur", POSIX mandated options, busybox optionally supports */
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/* "[-]p", POSIX non-mandated options, busybox optionally supports */
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/* "[-]SXvThw", GNU options, busybox optionally supports */
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/* "[-]K", SELinux mandated options, busybox optionally supports */
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/* "[-]e", I think we made this one up */
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#define LIST_MASK_TRIGGER LIST_SHORT
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#define STYLE_MASK_TRIGGER STYLE_MASK
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#define SORT_MASK_TRIGGER SORT_MASK
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#define DISP_MASK_TRIGGER DISP_ROWS
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#define TIME_MASK_TRIGGER TIME_MASK
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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# define LS_STR_TIMESTAMPS "cetu"
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#else
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# define LS_STR_TIMESTAMPS ""
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#endif
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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# define LS_STR_SORTFILES "SXrv"
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#else
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# define LS_STR_SORTFILES ""
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#endif
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#ifdef CONFIG_FEATURE_LS_FILETYPES
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# define LS_STR_FILETYPES "Fp"
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#else
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# define LS_STR_FILETYPES ""
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#endif
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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# define LS_STR_FOLLOW_LINKS "L"
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#else
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# define LS_STR_FOLLOW_LINKS ""
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#endif
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#ifdef CONFIG_FEATURE_LS_RECURSIVE
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# define LS_STR_RECURSIVE "R"
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#else
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# define LS_STR_RECURSIVE ""
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#endif
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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# define LS_STR_HUMAN_READABLE "h"
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#else
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# define LS_STR_HUMAN_READABLE ""
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#endif
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#ifdef CONFIG_SELINUX
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# define LS_STR_SELINUX "K"
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#else
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# define LS_STR_SELINUX ""
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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# define LS_STR_AUTOWIDTH "T:w:"
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#else
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# define LS_STR_AUTOWIDTH ""
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#endif
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static const char ls_options[]="Cadil1gnsxAk" \
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LS_STR_TIMESTAMPS \
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LS_STR_SORTFILES \
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LS_STR_FILETYPES \
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LS_STR_FOLLOW_LINKS \
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LS_STR_RECURSIVE \
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LS_STR_HUMAN_READABLE \
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LS_STR_SELINUX \
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LS_STR_AUTOWIDTH;
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#define LIST_MASK_TRIGGER LIST_SHORT
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#define STYLE_MASK_TRIGGER STYLE_MASK
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#define SORT_MASK_TRIGGER SORT_MASK
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#define DISP_MASK_TRIGGER DISP_ROWS
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#define TIME_MASK_TRIGGER TIME_MASK
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static const unsigned opt_flags[] = {
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LIST_SHORT | STYLE_SINGLE, /* 1 */
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DISP_HIDDEN, /* A */
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DISP_HIDDEN | DISP_DOT, /* a */
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LIST_SHORT | STYLE_COLUMNS, /* C */
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DISP_NOLIST, /* d */
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0, /* g - ingored */
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LIST_INO, /* i */
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LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
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LIST_ID_NUMERIC, /* n */
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LIST_BLOCKS, /* s */
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DISP_ROWS, /* x */
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#ifdef CONFIG_FEATURE_LS_FILETYPES
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LIST_FILETYPE | LIST_EXEC, /* F */
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LIST_FILETYPE, /* p */
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#endif
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#ifdef CONFIG_FEATURE_LS_RECURSIVE
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DISP_RECURSIVE, /* R */
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#endif
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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SORT_ORDER_REVERSE, /* r */
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SORT_SIZE, /* S */
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SORT_VERSION, /* v */
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SORT_EXT, /* v */
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DISP_HIDDEN | DISP_DOT, /* a */
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DISP_NOLIST, /* d */
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LIST_INO, /* i */
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LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
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LIST_SHORT | STYLE_SINGLE, /* 1 */
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0, /* g - ingored */
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LIST_ID_NUMERIC, /* n */
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LIST_BLOCKS, /* s */
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DISP_ROWS, /* x */
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DISP_HIDDEN, /* A */
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#ifdef CONFIG_SELINUX
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LIST_CONTEXT, /* k */
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#else
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0, /* k - ingored */
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#endif
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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LIST_FULLTIME, /* e */
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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# ifdef CONFIG_FEATURE_LS_SORTFILES
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TIME_CHANGE | SORT_CTIME, /* c */
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#else
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TIME_CHANGE, /* c */
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#endif
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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# else
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TIME_CHANGE, /* c */
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# endif
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LIST_FULLTIME, /* e */
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# ifdef CONFIG_FEATURE_LS_SORTFILES
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SORT_MTIME, /* t */
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# else
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0, /* t - ignored -- is this correct? */
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# endif
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# ifdef CONFIG_FEATURE_LS_SORTFILES
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TIME_ACCESS | SORT_ATIME, /* u */
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#else
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TIME_ACCESS, /* u */
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# else
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TIME_ACCESS, /* u */
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# endif
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#endif
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#ifdef CONFIG_FEATURE_LS_SORTFILES
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SORT_MTIME, /* t */
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#else
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0, /* t - ignored -- is this correct? */
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SORT_ORDER_REVERSE, /* r */
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SORT_SIZE, /* S */
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SORT_VERSION, /* v */
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SORT_EXT, /* v */
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#endif
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#ifdef CONFIG_FEATURE_LS_FILETYPES
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LIST_FILETYPE | LIST_EXEC, /* F */
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LIST_FILETYPE, /* p */
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#endif
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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FOLLOW_LINKS, /* L */
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FOLLOW_LINKS, /* L */
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#endif
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#ifdef CONFIG_FEATURE_LS_RECURSIVE
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DISP_RECURSIVE, /* R */
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#endif
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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LS_DISP_HR, /* h */
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LS_DISP_HR, /* h */
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#endif
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#ifndef CONFIG_SELINUX
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0, /* k - ingored */
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#else
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LIST_CONTEXT, /* k */
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#ifdef CONFIG_SELINUX
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LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
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#endif
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};
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@ -904,13 +945,24 @@ LS_DISP_HR, /* h */
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extern int ls_main(int argc, char **argv)
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{
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struct dnode **dnf, **dnd;
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int dnfiles, dndirs;
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struct dnode *dn, *cur, **dnp;
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int i, nfiles;
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int opt;
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int oi, ac;
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struct dnode **dnd;
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struct dnode **dnf;
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struct dnode **dnp;
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struct dnode *dn;
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struct dnode *cur;
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long opt;
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int nfiles = 0;
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int dnfiles;
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int dndirs;
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int oi;
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int ac;
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int i;
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char **av;
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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char *tabstops_str = NULL;
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char *terminal_width_str = NULL;
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#endif
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#ifdef CONFIG_SELINUX
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is_flask_enabled_flag = is_flask_enabled();
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#endif
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@ -923,13 +975,13 @@ extern int ls_main(int argc, char **argv)
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| SORT_NAME | SORT_ORDER_FORWARD
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#endif
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;
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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/* Obtain the terminal width. */
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get_terminal_width_height(0, &terminal_width, NULL);
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/* Go one less... */
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terminal_width--;
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#endif
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nfiles = 0;
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#ifdef CONFIG_FEATURE_LS_COLOR
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if (isatty(fileno(stdout)))
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@ -937,27 +989,21 @@ extern int ls_main(int argc, char **argv)
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#endif
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/* process options */
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while ((opt = getopt(argc, argv, ls_opts)) > 0) {
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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if (opt == 'T') {
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tabstops = atoi(optarg);
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continue;
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}
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if (opt == 'w') {
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terminal_width = atoi(optarg);
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continue;
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}
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if (opt == ':') {
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goto print_usage_message;
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}
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opt = bb_getopt_ulflags(argc, argv, ls_options, &tabstops_str, &terminal_width_str);
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if (tabstops_str) {
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tabstops = atoi(tabstops_str);
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}
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if (terminal_width_str) {
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terminal_width = atoi(terminal_width_str);
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}
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#else
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opt = bb_getopt_ulflags(argc, argv, ls_options);
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#endif
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{
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unsigned int flags;
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const char *p = strchr(ls_opts, opt);
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if (!p) { /* shouldn't be necessary */
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goto print_usage_message;
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}
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flags = opt_flags[(int)(p - ls_opts)];
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/* 16 = maximum options minus tabsize and screewn width */
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for (i = 0; i < 16; i++) {
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if (opt & (1 << i)) {
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unsigned int flags = opt_flags[i];
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if (flags & LIST_MASK_TRIGGER) {
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all_fmt &= ~LIST_MASK;
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}
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@ -989,7 +1035,6 @@ extern int ls_main(int argc, char **argv)
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}
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}
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/* sort out which command line options take precedence */
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#ifdef CONFIG_FEATURE_LS_RECURSIVE
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if (all_fmt & DISP_NOLIST)
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@ -1088,7 +1133,4 @@ extern int ls_main(int argc, char **argv)
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}
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}
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return (status);
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print_usage_message:
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bb_show_usage();
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}
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