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+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * 1999-02-22 Arkadiusz Miƛkiewicz <misiek@pld.ORG.PL>
+ * added Native Language Support
+ * 1999-09-19 Bruno Haible <haible@clisp.cons.org>
+ * modified to work correctly in multi-byte locales
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <unistd.h>
+
+#include "nls.h"
+#include "strutils.h"
+#include "c.h"
+#include "widechar.h"
+#include "closestream.h"
+
+/*
+COLRM removes unwanted columns from a file
+ Jeff Schriebman UC Berkeley 11-74
+*/
+
+static void __attribute__((__noreturn__)) usage(void)
+{
+ FILE *out = stdout;
+ fprintf(out, _("\nUsage:\n"
+ " %s [startcol [endcol]]\n"),
+ program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, out);
+ fputs(_("Filter out the specified columns.\n"), out);
+
+ fputs(USAGE_OPTIONS, out);
+ printf(USAGE_HELP_OPTIONS(16));
+ fprintf(out, _("%s reads from standard input and writes to standard output\n\n"),
+ program_invocation_short_name);
+ printf(USAGE_MAN_TAIL("colrm(1)"));
+ exit(EXIT_SUCCESS);
+}
+
+static int process_input(unsigned long first, unsigned long last)
+{
+ unsigned long ct = 0;
+ wint_t c;
+ unsigned long i;
+ int w;
+ int padding;
+
+ for (;;) {
+ c = getwc(stdin);
+ if (c == WEOF)
+ return 0;
+ if (c == '\t')
+ w = ((ct + 8) & ~7) - ct;
+ else if (c == '\b')
+ w = (ct ? ct - 1 : 0) - ct;
+ else {
+ w = wcwidth(c);
+ if (w < 0)
+ w = 0;
+ }
+ ct += w;
+ if (c == '\n') {
+ putwc(c, stdout);
+ ct = 0;
+ continue;
+
+ }
+ if (!first || ct < first) {
+ putwc(c, stdout);
+ continue;
+ }
+ break;
+ }
+
+ for (i = ct - w + 1; i < first; i++)
+ putwc(' ', stdout);
+
+ /* Loop getting rid of characters */
+ while (!last || ct < last) {
+ c = getwc(stdin);
+ if (c == WEOF)
+ return 0;
+ if (c == '\n') {
+ putwc(c, stdout);
+ return 1;
+ }
+ if (c == '\t')
+ ct = (ct + 8) & ~7;
+ else if (c == '\b')
+ ct = ct ? ct - 1 : 0;
+ else {
+ w = wcwidth(c);
+ if (w < 0)
+ w = 0;
+ ct += w;
+ }
+ }
+
+ padding = 0;
+
+ /* Output last of the line */
+ for (;;) {
+ c = getwc(stdin);
+ if (c == WEOF)
+ break;
+ if (c == '\n') {
+ putwc(c, stdout);
+ return 1;
+ }
+ if (padding == 0 && last < ct) {
+ for (i = last; i < ct; i++)
+ putwc(' ', stdout);
+ padding = 1;
+ }
+ putwc(c, stdout);
+ }
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ unsigned long first = 0, last = 0;
+ int opt;
+
+ static const struct option longopts[] = {
+ {"version", no_argument, NULL, 'V'},
+ {"help", no_argument, NULL, 'h'},
+ {NULL, 0, NULL, 0}
+ };
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ while ((opt =
+ getopt_long(argc, argv, "Vh", longopts,
+ NULL)) != -1)
+ switch (opt) {
+ case 'V':
+ print_version(EXIT_SUCCESS);
+ case 'h':
+ usage();
+ default:
+ errtryhelp(EXIT_FAILURE);
+ }
+
+ if (argc > 1)
+ first = strtoul_or_err(*++argv, _("first argument"));
+ if (argc > 2)
+ last = strtoul_or_err(*++argv, _("second argument"));
+
+ while (process_input(first, last))
+ ;
+
+ fflush(stdout);
+ return EXIT_SUCCESS;
+}