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Diffstat (limited to 'i/pc104/initrd/conf/busybox/coreutils/cut.c')
-rw-r--r--i/pc104/initrd/conf/busybox/coreutils/cut.c287
1 files changed, 287 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/coreutils/cut.c b/i/pc104/initrd/conf/busybox/coreutils/cut.c
new file mode 100644
index 0000000..22014fc
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/coreutils/cut.c
@@ -0,0 +1,287 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * cut.c - minimalist version of cut
+ *
+ * Copyright (C) 1999,2000,2001 by Lineo, inc.
+ * Written by Mark Whitley <markw@codepoet.org>
+ * debloated by Bernhard Fischer
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "busybox.h"
+
+/* option vars */
+static const char optstring[] = "b:c:f:d:sn";
+#define CUT_OPT_BYTE_FLGS (1<<0)
+#define CUT_OPT_CHAR_FLGS (1<<1)
+#define CUT_OPT_FIELDS_FLGS (1<<2)
+#define CUT_OPT_DELIM_FLGS (1<<3)
+#define CUT_OPT_SUPPRESS_FLGS (1<<4)
+
+static char delim = '\t'; /* delimiter, default is tab */
+
+struct cut_list {
+ int startpos;
+ int endpos;
+};
+
+enum {
+ BOL = 0,
+ EOL = INT_MAX,
+ NON_RANGE = -1
+};
+
+/* growable array holding a series of lists */
+static struct cut_list *cut_lists;
+static unsigned int nlists; /* number of elements in above list */
+
+
+static int cmpfunc(const void *a, const void *b)
+{
+ return (((struct cut_list *) a)->startpos -
+ ((struct cut_list *) b)->startpos);
+
+}
+
+static void cut_file(FILE * file)
+{
+ char *line = NULL;
+ unsigned int linenum = 0; /* keep these zero-based to be consistent */
+
+ /* go through every line in the file */
+ while ((line = xmalloc_getline(file)) != NULL) {
+
+ /* set up a list so we can keep track of what's been printed */
+ char * printed = xzalloc(strlen(line) * sizeof(char));
+ char * orig_line = line;
+ unsigned int cl_pos = 0;
+ int spos;
+
+ /* cut based on chars/bytes XXX: only works when sizeof(char) == byte */
+ if (option_mask32 & (CUT_OPT_CHAR_FLGS | CUT_OPT_BYTE_FLGS)) {
+ /* print the chars specified in each cut list */
+ for (; cl_pos < nlists; cl_pos++) {
+ spos = cut_lists[cl_pos].startpos;
+ while (spos < strlen(line)) {
+ if (!printed[spos]) {
+ printed[spos] = 'X';
+ putchar(line[spos]);
+ }
+ spos++;
+ if (spos > cut_lists[cl_pos].endpos
+ || cut_lists[cl_pos].endpos == NON_RANGE)
+ break;
+ }
+ }
+ } else if (delim == '\n') { /* cut by lines */
+ spos = cut_lists[cl_pos].startpos;
+
+ /* get out if we have no more lists to process or if the lines
+ * are lower than what we're interested in */
+ if (linenum < spos || cl_pos >= nlists)
+ goto next_line;
+
+ /* if the line we're looking for is lower than the one we were
+ * passed, it means we displayed it already, so move on */
+ while (spos < linenum) {
+ spos++;
+ /* go to the next list if we're at the end of this one */
+ if (spos > cut_lists[cl_pos].endpos
+ || cut_lists[cl_pos].endpos == NON_RANGE) {
+ cl_pos++;
+ /* get out if there's no more lists to process */
+ if (cl_pos >= nlists)
+ goto next_line;
+ spos = cut_lists[cl_pos].startpos;
+ /* get out if the current line is lower than the one
+ * we just became interested in */
+ if (linenum < spos)
+ goto next_line;
+ }
+ }
+
+ /* If we made it here, it means we've found the line we're
+ * looking for, so print it */
+ puts(line);
+ goto next_line;
+ } else { /* cut by fields */
+ int ndelim = -1; /* zero-based / one-based problem */
+ int nfields_printed = 0;
+ char *field = NULL;
+ const char delimiter[2] = { delim, 0 };
+
+ /* does this line contain any delimiters? */
+ if (strchr(line, delim) == NULL) {
+ if (!(option_mask32 & CUT_OPT_SUPPRESS_FLGS))
+ puts(line);
+ goto next_line;
+ }
+
+ /* process each list on this line, for as long as we've got
+ * a line to process */
+ for (; cl_pos < nlists && line; cl_pos++) {
+ spos = cut_lists[cl_pos].startpos;
+ do {
+ /* find the field we're looking for */
+ while (line && ndelim < spos) {
+ field = strsep(&line, delimiter);
+ ndelim++;
+ }
+
+ /* we found it, and it hasn't been printed yet */
+ if (field && ndelim == spos && !printed[ndelim]) {
+ /* if this isn't our first time through, we need to
+ * print the delimiter after the last field that was
+ * printed */
+ if (nfields_printed > 0)
+ putchar(delim);
+ fputs(field, stdout);
+ printed[ndelim] = 'X';
+ nfields_printed++; /* shouldn't overflow.. */
+ }
+
+ spos++;
+
+ /* keep going as long as we have a line to work with,
+ * this is a list, and we're not at the end of that
+ * list */
+ } while (spos <= cut_lists[cl_pos].endpos && line
+ && cut_lists[cl_pos].endpos != NON_RANGE);
+ }
+ }
+ /* if we printed anything at all, we need to finish it with a
+ * newline cuz we were handed a chomped line */
+ putchar('\n');
+ next_line:
+ linenum++;
+ free(printed);
+ free(orig_line);
+ }
+}
+
+static const char _op_on_field[] = " only when operating on fields";
+
+int cut_main(int argc, char **argv);
+int cut_main(int argc, char **argv)
+{
+ char *sopt, *ltok;
+
+ opt_complementary = "b--bcf:c--bcf:f--bcf";
+ getopt32(argc, argv, optstring, &sopt, &sopt, &sopt, &ltok);
+// argc -= optind;
+ argv += optind;
+ if (!(option_mask32 & (CUT_OPT_BYTE_FLGS | CUT_OPT_CHAR_FLGS | CUT_OPT_FIELDS_FLGS)))
+ bb_error_msg_and_die("expected a list of bytes, characters, or fields");
+ if (option_mask32 & BB_GETOPT_ERROR)
+ bb_error_msg_and_die("only one type of list may be specified");
+
+ if (option_mask32 & CUT_OPT_DELIM_FLGS) {
+ if (strlen(ltok) > 1) {
+ bb_error_msg_and_die("the delimiter must be a single character");
+ }
+ delim = ltok[0];
+ }
+
+ /* non-field (char or byte) cutting has some special handling */
+ if (!(option_mask32 & CUT_OPT_FIELDS_FLGS)) {
+ if (option_mask32 & CUT_OPT_SUPPRESS_FLGS) {
+ bb_error_msg_and_die
+ ("suppressing non-delimited lines makes sense%s",
+ _op_on_field);
+ }
+ if (delim != '\t') {
+ bb_error_msg_and_die
+ ("a delimiter may be specified%s", _op_on_field);
+ }
+ }
+
+ /*
+ * parse list and put values into startpos and endpos.
+ * valid list formats: N, N-, N-M, -M
+ * more than one list can be separated by commas
+ */
+ {
+ char *ntok;
+ int s = 0, e = 0;
+
+ /* take apart the lists, one by one (they are separated with commas */
+ while ((ltok = strsep(&sopt, ",")) != NULL) {
+
+ /* it's actually legal to pass an empty list */
+ if (strlen(ltok) == 0)
+ continue;
+
+ /* get the start pos */
+ ntok = strsep(&ltok, "-");
+ if (ntok == NULL) {
+ bb_error_msg
+ ("internal error: ntok is null for start pos!?\n");
+ } else if (strlen(ntok) == 0) {
+ s = BOL;
+ } else {
+ s = xatoi_u(ntok);
+ /* 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)
+ s--;
+ }
+
+ /* get the end pos */
+ ntok = strsep(&ltok, "-");
+ if (ntok == NULL) {
+ e = NON_RANGE;
+ } else if (strlen(ntok) == 0) {
+ e = EOL;
+ } else {
+ e = xatoi_u(ntok);
+ /* if the user specified and end position of 0, that means "til the
+ * end of the line */
+ if (e == 0)
+ e = EOL;
+ e--; /* again, arrays are zero based, lines are 1 based */
+ if (e == s)
+ e = NON_RANGE;
+ }
+
+ /* if there's something left to tokenize, the user passed
+ * 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;
+ cut_lists[nlists-1].endpos = e;
+ }
+
+ /* make sure we got some cut positions out of all that */
+ if (nlists == 0)
+ bb_error_msg_and_die("missing list of positions");
+
+ /* now that the lists are parsed, we need to sort them to make life
+ * easier on us when it comes time to print the chars / fields / lines
+ */
+ qsort(cut_lists, nlists, sizeof(struct cut_list), cmpfunc);
+ }
+
+ /* argv[0..argc-1] should be names of file to process. If no
+ * files were specified or '-' was specified, take input from stdin.
+ * Otherwise, we process all the files specified. */
+ if (argv[0] == NULL || LONE_DASH(argv[0])) {
+ cut_file(stdin);
+ } else {
+ FILE *file;
+
+ do {
+ file = fopen_or_warn(argv[0], "r");
+ if (file) {
+ cut_file(file);
+ fclose(file);
+ }
+ } while (*++argv);
+ }
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(cut_lists);
+ return EXIT_SUCCESS;
+}