+/* vi: set sw=8 ts=8: */
/*
* cut.c - minimalist version of cut
*
* Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Mark Whitley <markw@lineo.com>, <markw@codepoet.org>
+ * Written by Mark Whitley <markw@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include <stdio.h>
#include <stdlib.h>
-#include <unistd.h> /* getopt */
+#include <unistd.h>
#include <string.h>
#include <limits.h>
#include "busybox.h"
-/* globals from other files */
-extern int optind;
-extern char *optarg;
-
-
/* option vars */
-static char part = 0; /* (b)yte, (c)har, (f)ields */
-static unsigned int supress_non_delimited_lines = 0;
+static const char optstring[] = "b:c:f:d:sn";
+#define OPT_BYTE_FLGS 1
+#define OPT_CHAR_FLGS 2
+#define OPT_FIELDS_FLGS 4
+#define OPT_DELIM_FLGS 8
+#define OPT_SUPRESS_FLGS 16
+static char part; /* (b)yte, (c)har, (f)ields */
+static unsigned int supress_non_delimited_lines;
static char delim = '\t'; /* delimiter, default is tab */
struct cut_list {
int endpos;
};
-static const int BOL = 0;
-static const int EOL = INT_MAX;
-static const int NON_RANGE = -1;
+enum {
+ BOL = 0,
+ EOL = INT_MAX,
+ NON_RANGE = -1
+};
static struct cut_list *cut_lists = NULL; /* growable array holding a series of lists */
static unsigned int nlists = 0; /* number of elements in above list */
/*
* parse_lists() - parses a list and puts values into startpos and endpos.
- * valid list formats: N, N-, N-M, -M
- * more than one list can be seperated by commas
+ * valid list formats: N, N-, N-M, -M
+ * more than one list can be separated by commas
*/
static void parse_lists(char *lists)
{
char *junk;
int s = 0, e = 0;
- /* take apart the lists, one by one (they are seperated with commas */
+ /* take apart the lists, one by one (they are separated with commas */
while ((ltok = strsep(&lists, ",")) != NULL) {
/* it's actually legal to pass an empty list */
s = strtoul(ntok, &junk, 10);
if(*junk != '\0' || s < 0)
bb_error_msg_and_die("invalid byte or field list");
-
+
/* account for the fact that arrays are zero based, while the user
* expects the first char on the line to be char # 1 */
if (s != 0)
/* if there's something left to tokenize, the user past an invalid list */
if (ltok)
bb_error_msg_and_die("invalid byte or field list");
-
+
/* add the new list */
cut_lists = xrealloc(cut_lists, sizeof(struct cut_list) * (++nlists));
cut_lists[nlists-1].startpos = s;
{
static int c = 0;
static int l = -1;
-
+
/* I can't initialize this above cuz the "initializer isn't
* constant" *sigh* */
if (l == -1)
while ((line = bb_get_chomped_line_from_file(file)) != NULL) {
/* cut based on chars/bytes XXX: only works when sizeof(char) == byte */
- if (part == 'c' || part == 'b')
+ if ((part & (OPT_CHAR_FLGS | OPT_BYTE_FLGS)))
cut_line_by_chars(line);
/* cut based on fields */
- else if (part == 'f') {
+ else {
if (delim == '\n')
cut_file_by_lines(line, linenum);
else
}
-extern int cut_main(int argc, char **argv)
+int cut_main(int argc, char **argv)
{
- int opt;
-
- while ((opt = getopt(argc, argv, "b:c:d:f:ns")) > 0) {
- switch (opt) {
- case 'b':
- case 'c':
- case 'f':
- /* make sure they didn't ask for two types of lists */
- if (part != 0) {
- bb_error_msg_and_die("only one type of list may be specified");
- }
- part = (char)opt;
- parse_lists(optarg);
- break;
- case 'd':
- if (strlen(optarg) > 1) {
- bb_error_msg_and_die("the delimiter must be a single character");
- }
- delim = optarg[0];
- break;
- case 'n':
- /* no-op */
- break;
- case 's':
- supress_non_delimited_lines++;
- break;
- }
- }
+ unsigned long opt;
+ char *sopt, *sdopt;
- if (part == 0) {
+ bb_opt_complementally = "b--bcf:c--bcf:f--bcf";
+ opt = bb_getopt_ulflags(argc, argv, optstring, &sopt, &sopt, &sopt, &sdopt);
+ part = opt & (OPT_BYTE_FLGS|OPT_CHAR_FLGS|OPT_FIELDS_FLGS);
+ if(part == 0)
bb_error_msg_and_die("you must specify a list of bytes, characters, or fields");
+ if(opt & BB_GETOPT_ERROR)
+ bb_error_msg_and_die("only one type of list may be specified");
+ parse_lists(sopt);
+ if((opt & (OPT_DELIM_FLGS))) {
+ if (strlen(sdopt) > 1) {
+ bb_error_msg_and_die("the delimiter must be a single character");
+ }
+ delim = sdopt[0];
}
+ supress_non_delimited_lines = opt & OPT_SUPRESS_FLGS;
/* non-field (char or byte) cutting has some special handling */
- if (part != 'f') {
+ if (part != OPT_FIELDS_FLGS) {
if (supress_non_delimited_lines) {
bb_error_msg_and_die("suppressing non-delimited lines makes sense"
" only when operating on fields");
}
- if (delim != '\t' && part != 'f') {
+ if (delim != '\t') {
bb_error_msg_and_die("a delimiter may be specified only when operating on fields");
}
}
projects / oweals / busybox.git / blobdiff