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https://git.busybox.net/busybox.git
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cut: add toybox-compatible options -O OUTSEP, -D, -F LIST
function old new delta cut_main 884 1201 +317 packed_usage 33823 33885 +62 .rodata 104186 104179 -7 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/1 up/down: 379/-7) Total: 372 bytes Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Rob Landley
Denys Vlasenko
parent
dabbeeb793
commit
0068ce2fa0
201
coreutils/cut.c
201
coreutils/cut.c
@ -14,6 +14,13 @@
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//config: help
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//config: cut is used to print selected parts of lines from
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//config: each file to stdout.
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//config:
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//config:config FEATURE_CUT_REGEX
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//config: bool "cut -F"
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//config: default y
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//config: depends on CUT
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//config: help
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//config: Allow regex based delimiters.
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//applet:IF_CUT(APPLET_NOEXEC(cut, cut, BB_DIR_USR_BIN, BB_SUID_DROP, cut))
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@ -25,9 +32,14 @@
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//usage: "Print selected fields from FILEs to stdout\n"
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//usage: "\n -b LIST Output only bytes from LIST"
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//usage: "\n -c LIST Output only characters from LIST"
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//usage: "\n -d CHAR Use CHAR instead of tab as field delimiter"
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//usage: "\n -d SEP Field delimiter for input (default -f TAB, -F run of whitespace)"
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//usage: "\n -O SEP Field delimeter for output (default = -d for -f, one space for -F)"
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//usage: "\n -D Don't sort/collate sections or match -fF lines without delimeter"
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//usage: "\n -f LIST Print only these fields (-d is single char)"
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//usage: IF_FEATURE_CUT_REGEX(
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//usage: "\n -F LIST Print only these fields (-d is regex)"
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//usage: )
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//usage: "\n -s Output only lines containing delimiter"
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//usage: "\n -f LIST Print only these fields"
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//usage: "\n -n Ignored"
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//(manpage:-n with -b: don't split multibyte characters)
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//usage:
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@ -39,38 +51,49 @@
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#include "libbb.h"
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#if ENABLE_FEATURE_CUT_REGEX
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#include "xregex.h"
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#else
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#define regex_t int
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typedef struct { int rm_eo, rm_so; } regmatch_t;
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#define xregcomp(x, ...) *(x) = 0
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#define regexec(...) 0
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#endif
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/* This is a NOEXEC applet. Be very careful! */
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/* option vars */
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#define OPT_STR "b:c:f:d:sn"
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#define OPT_STR "b:c:f:d:O:sD"IF_FEATURE_CUT_REGEX("F:")"n"
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#define CUT_OPT_BYTE_FLGS (1 << 0)
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#define CUT_OPT_CHAR_FLGS (1 << 1)
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#define CUT_OPT_FIELDS_FLGS (1 << 2)
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#define CUT_OPT_DELIM_FLGS (1 << 3)
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#define CUT_OPT_SUPPRESS_FLGS (1 << 4)
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#define CUT_OPT_ODELIM_FLGS (1 << 4)
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#define CUT_OPT_SUPPRESS_FLGS (1 << 5)
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#define CUT_OPT_NOSORT_FLGS (1 << 6)
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#define CUT_OPT_REGEX_FLGS ((1 << 7) * ENABLE_FEATURE_CUT_REGEX)
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struct cut_list {
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int startpos;
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int endpos;
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};
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enum {
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BOL = 0,
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EOL = INT_MAX,
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NON_RANGE = -1
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};
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static int cmpfunc(const void *a, const void *b)
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{
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return (((struct cut_list *) a)->startpos -
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((struct cut_list *) b)->startpos);
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}
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static void cut_file(FILE *file, char delim, const struct cut_list *cut_lists, unsigned nlists)
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static void cut_file(FILE *file, const char *delim, const char *odelim,
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const struct cut_list *cut_lists, unsigned nlists)
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{
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char *line;
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unsigned linenum = 0; /* keep these zero-based to be consistent */
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regex_t reg;
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int spos, shoe = option_mask32 & CUT_OPT_REGEX_FLGS;
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if (shoe) xregcomp(®, delim, REG_EXTENDED);
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/* go through every line in the file */
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while ((line = xmalloc_fgetline(file)) != NULL) {
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@ -80,29 +103,22 @@ static void cut_file(FILE *file, char delim, const struct cut_list *cut_lists, u
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char *printed = xzalloc(linelen + 1);
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char *orig_line = line;
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unsigned cl_pos = 0;
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int spos;
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/* cut based on chars/bytes XXX: only works when sizeof(char) == byte */
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if (option_mask32 & (CUT_OPT_CHAR_FLGS | CUT_OPT_BYTE_FLGS)) {
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/* print the chars specified in each cut list */
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for (; cl_pos < nlists; cl_pos++) {
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spos = cut_lists[cl_pos].startpos;
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while (spos < linelen) {
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for (spos = cut_lists[cl_pos].startpos; spos < linelen;) {
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if (!printed[spos]) {
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printed[spos] = 'X';
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putchar(line[spos]);
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}
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spos++;
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if (spos > cut_lists[cl_pos].endpos
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/* NON_RANGE is -1, so if below is true,
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* the above was true too (spos is >= 0) */
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/* || cut_lists[cl_pos].endpos == NON_RANGE */
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) {
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if (++spos > cut_lists[cl_pos].endpos) {
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break;
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}
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}
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}
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} else if (delim == '\n') { /* cut by lines */
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} else if (*delim == '\n') { /* cut by lines */
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spos = cut_lists[cl_pos].startpos;
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/* get out if we have no more lists to process or if the lines
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@ -115,9 +131,7 @@ static void cut_file(FILE *file, char delim, const struct cut_list *cut_lists, u
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while (spos < (int)linenum) {
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spos++;
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/* go to the next list if we're at the end of this one */
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if (spos > cut_lists[cl_pos].endpos
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|| cut_lists[cl_pos].endpos == NON_RANGE
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) {
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if (spos > cut_lists[cl_pos].endpos) {
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cl_pos++;
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/* get out if there's no more lists to process */
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if (cl_pos >= nlists)
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@ -135,55 +149,56 @@ static void cut_file(FILE *file, char delim, const struct cut_list *cut_lists, u
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puts(line);
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goto next_line;
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} else { /* cut by fields */
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int ndelim = -1; /* zero-based / one-based problem */
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int nfields_printed = 0;
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char *field = NULL;
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char delimiter[2];
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unsigned uu = 0, start = 0, end = 0, out = 0;
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int dcount = 0;
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delimiter[0] = delim;
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delimiter[1] = 0;
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/* Loop through bytes, finding next delimiter */
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for (;;) {
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/* End of current range? */
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if (end == linelen || dcount > cut_lists[cl_pos].endpos) {
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if (++cl_pos >= nlists) break;
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if (option_mask32 & CUT_OPT_NOSORT_FLGS)
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start = dcount = uu = 0;
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end = 0;
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}
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/* End of current line? */
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if (uu == linelen) {
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/* If we've seen no delimiters, check -s */
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if (!cl_pos && !dcount && !shoe) {
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if (option_mask32 & CUT_OPT_SUPPRESS_FLGS)
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goto next_line;
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} else if (dcount<cut_lists[cl_pos].startpos)
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start = linelen;
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end = linelen;
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} else {
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/* Find next delimiter */
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if (shoe) {
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regmatch_t rr = {-1, -1};
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/* does this line contain any delimiters? */
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if (strchr(line, delim) == NULL) {
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if (!(option_mask32 & CUT_OPT_SUPPRESS_FLGS))
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puts(line);
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goto next_line;
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}
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if (!regexec(®, line+uu, 1, &rr, REG_NOTBOL|REG_NOTEOL)) {
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end = uu + rr.rm_so;
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uu += rr.rm_eo;
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} else {
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uu = linelen;
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continue;
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}
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} else if (line[end = uu++] != *delim)
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continue;
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/* process each list on this line, for as long as we've got
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* a line to process */
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for (; cl_pos < nlists && line; cl_pos++) {
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spos = cut_lists[cl_pos].startpos;
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do {
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/* find the field we're looking for */
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while (line && ndelim < spos) {
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field = strsep(&line, delimiter);
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ndelim++;
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/* Got delimiter. Loop if not yet within range. */
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if (dcount++ < cut_lists[cl_pos].startpos) {
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start = uu;
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continue;
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}
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/* we found it, and it hasn't been printed yet */
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if (field && ndelim == spos && !printed[ndelim]) {
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/* if this isn't our first time through, we need to
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* print the delimiter after the last field that was
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* printed */
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if (nfields_printed > 0)
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putchar(delim);
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fputs_stdout(field);
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printed[ndelim] = 'X';
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nfields_printed++; /* shouldn't overflow.. */
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}
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spos++;
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/* keep going as long as we have a line to work with,
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* this is a list, and we're not at the end of that
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* list */
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} while (spos <= cut_lists[cl_pos].endpos && line
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&& cut_lists[cl_pos].endpos != NON_RANGE);
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}
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if (end != start || !shoe)
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printf("%s%.*s", out++ ? odelim : "", end-start, line + start);
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start = uu;
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if (!dcount)
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break;
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}
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}
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/* if we printed anything at all, we need to finish it with a
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* newline cuz we were handed a chomped line */
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/* if we printed anything, finish with newline */
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putchar('\n');
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next_line:
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linenum++;
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@ -198,37 +213,35 @@ int cut_main(int argc UNUSED_PARAM, char **argv)
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/* growable array holding a series of lists */
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struct cut_list *cut_lists = NULL;
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unsigned nlists = 0; /* number of elements in above list */
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char delim = '\t'; /* delimiter, default is tab */
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char *sopt, *ltok;
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const char *delim = NULL;
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const char *odelim = NULL;
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unsigned opt;
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#define ARG "bcf"IF_FEATURE_CUT_REGEX("F")
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opt = getopt32(argv, "^"
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OPT_STR
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"\0" "b--bcf:c--bcf:f--bcf",
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&sopt, &sopt, &sopt, <ok
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OPT_STR // = "b:c:f:d:O:sD"IF_FEATURE_CUT_REGEX("F:")"n"
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"\0" "b--"ARG":c--"ARG":f--"ARG IF_FEATURE_CUT_REGEX("F--"ARG),
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&sopt, &sopt, &sopt, &delim, &odelim IF_FEATURE_CUT_REGEX(, &sopt)
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);
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if (!delim || !*delim)
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delim = (opt & CUT_OPT_REGEX_FLGS) ? "[[:space:]]+" : "\t";
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if (!odelim) odelim = (opt & CUT_OPT_REGEX_FLGS) ? " " : delim;
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// argc -= optind;
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argv += optind;
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if (!(opt & (CUT_OPT_BYTE_FLGS | CUT_OPT_CHAR_FLGS | CUT_OPT_FIELDS_FLGS)))
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if (!(opt & (CUT_OPT_BYTE_FLGS | CUT_OPT_CHAR_FLGS | CUT_OPT_FIELDS_FLGS | CUT_OPT_REGEX_FLGS)))
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bb_simple_error_msg_and_die("expected a list of bytes, characters, or fields");
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if (opt & CUT_OPT_DELIM_FLGS) {
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if (ltok[0] && ltok[1]) { /* more than 1 char? */
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bb_simple_error_msg_and_die("the delimiter must be a single character");
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}
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delim = ltok[0];
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}
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/* non-field (char or byte) cutting has some special handling */
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if (!(opt & CUT_OPT_FIELDS_FLGS)) {
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if (!(opt & (CUT_OPT_FIELDS_FLGS|CUT_OPT_REGEX_FLGS))) {
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static const char _op_on_field[] ALIGN1 = " only when operating on fields";
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if (opt & CUT_OPT_SUPPRESS_FLGS) {
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bb_error_msg_and_die
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("suppressing non-delimited lines makes sense%s",
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_op_on_field);
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("suppressing non-delimited lines makes sense%s", _op_on_field);
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}
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if (delim != '\t') {
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if (opt & CUT_OPT_DELIM_FLGS) {
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bb_error_msg_and_die
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("a delimiter may be specified%s", _op_on_field);
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}
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@ -253,7 +266,7 @@ int cut_main(int argc UNUSED_PARAM, char **argv)
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/* get the start pos */
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ntok = strsep(<ok, "-");
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if (!ntok[0]) {
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s = BOL;
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s = 0;
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} else {
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s = xatoi_positive(ntok);
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/* account for the fact that arrays are zero based, while
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@ -264,24 +277,23 @@ int cut_main(int argc UNUSED_PARAM, char **argv)
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/* get the end pos */
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if (ltok == NULL) {
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e = NON_RANGE;
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e = s;
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} else if (!ltok[0]) {
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e = EOL;
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e = INT_MAX;
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} else {
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e = xatoi_positive(ltok);
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/* if the user specified and end position of 0,
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* that means "til the end of the line" */
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if (e == 0)
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e = EOL;
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if (!*ltok)
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e = INT_MAX;
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else if (e < s)
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bb_error_msg_and_die("%d<%d", e, s);
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e--; /* again, arrays are zero based, lines are 1 based */
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if (e == s)
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e = NON_RANGE;
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}
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/* add the new list */
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cut_lists = xrealloc_vector(cut_lists, 4, nlists);
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/* NB: startpos is always >= 0,
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* while endpos may be = NON_RANGE (-1) */
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/* NB: startpos is always >= 0 */
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cut_lists[nlists].startpos = s;
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cut_lists[nlists].endpos = e;
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nlists++;
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@ -294,7 +306,8 @@ int cut_main(int argc UNUSED_PARAM, char **argv)
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/* now that the lists are parsed, we need to sort them to make life
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* easier on us when it comes time to print the chars / fields / lines
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*/
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qsort(cut_lists, nlists, sizeof(cut_lists[0]), cmpfunc);
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if (!(opt & CUT_OPT_NOSORT_FLGS))
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qsort(cut_lists, nlists, sizeof(cut_lists[0]), cmpfunc);
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}
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{
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@ -309,7 +322,7 @@ int cut_main(int argc UNUSED_PARAM, char **argv)
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retval = EXIT_FAILURE;
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continue;
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}
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cut_file(file, delim, cut_lists, nlists);
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cut_file(file, delim, odelim, cut_lists, nlists);
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fclose_if_not_stdin(file);
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} while (*++argv);
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@ -15,4 +15,68 @@ testing "cut '-' (stdin) and multi file handling" \
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"the quick brown fox\n" \
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"jumps over the lazy dog\n" \
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abc="\
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one:two:three:four:five:six:seven
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alpha:beta:gamma:delta:epsilon:zeta:eta:theta:iota:kappa:lambda:mu
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the quick brown fox jumps over the lazy dog
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"
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testing "cut -b a,a,a" "cut -b 3,3,3 input" "e\np\ne\n" "$abc" ""
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testing "cut -b overlaps" "cut -b 1-3,2-5,7-9,9-10 input" \
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"one:to:th\nalphabeta\nthe qick \n" "$abc" ""
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testing "-b encapsulated" "cut -b 3-8,4-6 input" "e:two:\npha:be\ne quic\n" \
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"$abc" ""
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# --output-delimiter not implemnted (yet?)
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#testing "cut -bO overlaps" \
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# "cut --output-delimiter ' ' -b 1-3,2-5,7-9,9-10 input" \
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# "one:t o:th\nalpha beta\nthe q ick \n" "$abc" ""
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testing "cut high-low error" "cut -b 8-3 abc.txt 2>/dev/null || echo err" "err\n" \
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"$abc" ""
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testing "cut -c a-b" "cut -c 4-10 input" ":two:th\nha:beta\n quick \n" "$abc" ""
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testing "cut -c a-" "cut -c 41- input" "\ntheta:iota:kappa:lambda:mu\ndog\n" "$abc" ""
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testing "cut -c -b" "cut -c -39 input" \
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"one:two:three:four:five:six:seven\nalpha:beta:gamma:delta:epsilon:zeta:eta\nthe quick brown fox jumps over the lazy\n" \
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"$abc" ""
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testing "cut -c a" "cut -c 40 input" "\n:\n \n" "$abc" ""
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testing "cut -c a,b-c,d" "cut -c 3,5-7,10 input" "etwoh\npa:ba\nequi \n" "$abc" ""
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testing "cut -f a-" "cut -d ':' -f 5- input" "five:six:seven\nepsilon:zeta:eta:theta:iota:kappa:lambda:mu\nthe quick brown fox jumps over the lazy dog\n" "$abc" ""
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testing "cut show whole line with no delim" "cut -d ' ' -f 3 input" \
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"one:two:three:four:five:six:seven\nalpha:beta:gamma:delta:epsilon:zeta:eta:theta:iota:kappa:lambda:mu\nbrown\n" "$abc" ""
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testing "cut with echo, -c (a-b)" "echo 'ref_categorie=test' | cut -c 1-15 " "ref_categorie=t\n" "" ""
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testing "cut with echo, -c (a)" "echo 'ref_categorie=test' | cut -c 14" "=\n" "" ""
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testing "cut with -c (a,b,c)" "cut -c 4,5,20 input" "det\n" "abcdefghijklmnopqrstuvwxyz" ""
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testing "cut with -b (a,b,c)" "cut -b 4,5,20 input" "det\n" "abcdefghijklmnopqrstuvwxyz" ""
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input="\
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406378:Sales:Itorre:Jan
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031762:Marketing:Nasium:Jim
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636496:Research:Ancholie:Mel
|
||||
396082:Sales:Jucacion:Ed
|
||||
"
|
||||
testing "cut with -d -f(:) -s" "cut -d: -f3 -s input" "Itorre\nNasium\nAncholie\nJucacion\n" "$input" ""
|
||||
testing "cut with -d -f( ) -s" "cut -d' ' -f3 -s input && echo yes" "yes\n" "$input" ""
|
||||
testing "cut with -d -f(a) -s" "cut -da -f3 -s input" "n\nsium:Jim\n\ncion:Ed\n" "$input" ""
|
||||
testing "cut with -d -f(a) -s -n" "cut -da -f3 -s -n input" "n\nsium:Jim\n\ncion:Ed\n" "$input" ""
|
||||
|
||||
# substitute for awk
|
||||
testing "cut -DF" "cut -DF 2,7,5" \
|
||||
"said and your\nare\nis demand. supply\nforecast :\nyou you better,\n\nEm: Took hate\n" "" \
|
||||
"Bother, said Pooh. It's your husband, and he has a gun.
|
||||
Cheerios are donut seeds.
|
||||
Talk is cheap because supply exceeds demand.
|
||||
Weather forecast for tonight : dark.
|
||||
Apple: you can buy better, but you can't pay more.
|
||||
Subcalifragilisticexpialidocious.
|
||||
Auntie Em: Hate you, hate Kansas. Took the dog. Dorothy."
|
||||
|
||||
testing "cut empty field" "cut -d ':' -f 1-3" "a::b\n" "" "a::b\n"
|
||||
testing "cut empty field 2" "cut -d ':' -f 3-5" "b::c\n" "" "a::b::c:d\n"
|
||||
|
||||
exit $FAILCOUNT
|
||||
|
||||
Loading…
Reference in New Issue
Block a user