*
* Copyright (C) 2003 Manuel Novoa III <mjn3@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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- option -m is not currently supported. */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Rewritten to fix a number of problems and do some size optimizations.
- * Problems in the previous busybox implementation (besides bloat) included:
+ * Problems in the previous busybox implementation (besides bloat) included:
* 1) broken 'wc -c' optimization (read note below)
* 2) broken handling of '-' args
* 3) no checking of ferror on EOF returns
* for which 'wc -c' should output '0'.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "busybox.h"
+#include "libbb.h"
#ifdef CONFIG_LOCALE_SUPPORT
-#include <locale.h>
-#include <ctype.h>
#define isspace_given_isprint(c) isspace(c)
#else
#undef isspace
#define isspace_given_isprint(c) ((c) == ' ')
#endif
+#if ENABLE_FEATURE_WC_LARGE
+#define COUNT_T unsigned long long
+#define COUNT_FMT "llu"
+#else
+#define COUNT_T unsigned
+#define COUNT_FMT "u"
+#endif
+
enum {
WC_LINES = 0,
WC_WORDS = 1,
WC_LENGTH = 3
};
-/* Note: If this changes, remember to change the initialization of
- * 'name' in wc_main. It needs to point to the terminating nul. */
-static const char wc_opts[] = "lwcL"; /* READ THE WARNING ABOVE! */
-
-enum {
- OP_INC_LINE = 1, /* OP_INC_LINE must be 1. */
- OP_SPACE = 2,
- OP_NEWLINE = 4,
- OP_TAB = 8,
- OP_NUL = 16,
-};
-
-/* Note: If fmt_str changes, the offsets to 's' in the OUTPUT section
- * will need to be updated. */
-static const char fmt_str[] = " %7u\0 %s\n";
-static const char total_str[] = "total";
-
+int wc_main(int argc, char **argv);
int wc_main(int argc, char **argv)
{
FILE *fp;
- const char *s;
- unsigned int *pcounts;
- unsigned int counts[4];
- unsigned int totals[4];
- unsigned int linepos;
- unsigned int u;
+ const char *s, *arg;
+ const char *start_fmt = "%9"COUNT_FMT;
+ const char *fname_fmt = " %s\n";
+ COUNT_T *pcounts;
+ COUNT_T counts[4];
+ COUNT_T totals[4];
+ unsigned linepos;
+ unsigned u;
int num_files = 0;
int c;
- char status = EXIT_SUCCESS;
- char in_word;
- char print_type;
-
- print_type = bb_getopt_ulflags(argc, argv, wc_opts);
-
+ smallint status = EXIT_SUCCESS;
+ smallint in_word;
+ unsigned print_type;
+
+ print_type = getopt32(argc, argv, "lwcL");
+
if (print_type == 0) {
print_type = (1 << WC_LINES) | (1 << WC_WORDS) | (1 << WC_CHARS);
}
-
+
argv += optind;
- if (!*argv) {
+ if (!argv[0]) {
*--argv = (char *) bb_msg_standard_input;
+ fname_fmt = "\n";
+ if (!((print_type-1) & print_type)) /* exactly one option? */
+ start_fmt = "%"COUNT_FMT;
}
-
+
memset(totals, 0, sizeof(totals));
-
+
pcounts = counts;
-
- do {
+
+ while ((arg = *argv++) != 0) {
++num_files;
- if (!(fp = bb_wfopen_input(*argv))) {
+ fp = fopen_or_warn_stdin(arg);
+ if (!fp) {
status = EXIT_FAILURE;
continue;
}
-
+
memset(counts, 0, sizeof(counts));
linepos = 0;
in_word = 0;
-
+
do {
+ /* Our -w doesn't match GNU wc exactly... oh well */
+
++counts[WC_CHARS];
c = getc(fp);
if (isprint(c)) {
}
} else if (c == EOF) {
if (ferror(fp)) {
- bb_perror_msg("%s", *argv);
+ bb_perror_msg("%s", arg);
status = EXIT_FAILURE;
}
--counts[WC_CHARS];
} else {
continue;
}
-
+
counts[WC_WORDS] += in_word;
in_word = 0;
if (c == EOF) {
break;
}
} while (1);
-
+
if (totals[WC_LENGTH] < counts[WC_LENGTH]) {
totals[WC_LENGTH] = counts[WC_LENGTH];
}
totals[WC_LENGTH] -= counts[WC_LENGTH];
-
- bb_fclose_nonstdin(fp);
-
+
+ fclose_if_not_stdin(fp);
+
OUTPUT:
- s = fmt_str + 1; /* Skip the leading space on 1st pass. */
+ /* coreutils wc tries hard to print pretty columns
+ * (saves results for all files, find max col len etc...)
+ * we won't try that hard, it will bloat us too much */
+ s = start_fmt;
u = 0;
do {
if (print_type & (1 << u)) {
- bb_printf(s, pcounts[u]);
- s = fmt_str; /* Ok... restore the leading space. */
+ printf(s, pcounts[u]);
+ s = " %9"COUNT_FMT; /* Ok... restore the leading space. */
}
totals[u] += pcounts[u];
} while (++u < 4);
-
- s += 8; /* Set the format to the empty string. */
-
- if (*argv != bb_msg_standard_input) {
- s -= 3; /* We have a name, so do %s conversion. */
- }
- bb_printf(s, *argv);
-
- } while (*++argv);
-
+ printf(fname_fmt, arg);
+ }
+
/* If more than one file was processed, we want the totals. To save some
* space, we set the pcounts ptr to the totals array. This has the side
* effect of trashing the totals array after outputting it, but that's
* irrelavent since we no longer need it. */
if (num_files > 1) {
num_files = 0; /* Make sure we don't get here again. */
- *--argv = (char *) total_str;
+ arg = "total";
pcounts = totals;
+ --argv;
goto OUTPUT;
}
-
- bb_fflush_stdout_and_exit(status);
+
+ fflush_stdout_and_exit(status);
}
projects / oweals / busybox.git / blobdiff