/* split.c -- split a file into pieces.
- Copyright (C) 88, 91, 95, 1996 Free Software Foundation, Inc.
+ Copyright (C) 88, 91, 1995-2001 Free Software Foundation, Inc.
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
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. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
\f
/* By tege@sics.se, with rms.
#include <getopt.h>
#include <sys/types.h>
-#if HAVE_LIMITS_H
-# include <limits.h>
-#endif
-
-#ifndef UINT_MAX
-# define UINT_MAX ((unsigned int) ~(unsigned int) 0)
-#endif
-
-#ifndef INT_MAX
-# define INT_MAX ((int) (UINT_MAX >> 1))
-#endif
-
#include "system.h"
+#include "closeout.h"
#include "error.h"
+#include "full-write.h"
+#include "safe-read.h"
#include "xstrtol.h"
-char *xmalloc ();
-int full_write ();
-int safe_read ();
+/* The official name of this program (e.g., no `g' prefix). */
+#define PROGRAM_NAME "split"
+
+#define AUTHORS N_ ("Torbjorn Granlund and Richard M. Stallman")
/* The name this program was run with. */
char *program_name;
/* Descriptor on which output file is open. */
static int output_desc;
-/* If nonzero, display usage information and exit. */
-static int show_help;
-
-/* If nonzero, print the version on standard output then exit. */
-static int show_version;
-
/* If nonzero, print a diagnostic on standard error just before each
output file is opened. */
static int verbose;
{"lines", required_argument, NULL, 'l'},
{"line-bytes", required_argument, NULL, 'C'},
{"verbose", no_argument, NULL, 2},
- {"help", no_argument, &show_help, 1},
- {"version", no_argument, &show_version, 1},
+ {GETOPT_HELP_OPTION_DECL},
+ {GETOPT_VERSION_OPTION_DECL},
{NULL, 0, NULL, 0}
};
-static void
+void
usage (int status)
{
if (status != 0)
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default\n\
PREFIX is `x'. With no INPUT, or when INPUT is -, read standard input.\n\
\n\
+Mandatory arguments to long options are mandatory for short options too.\n\
-b, --bytes=SIZE put SIZE bytes per output file\n\
-C, --line-bytes=SIZE put at most SIZE bytes of lines per output file\n\
-l, --lines=NUMBER put NUMBER lines per output file\n\
-NUMBER same as -l NUMBER\n\
--verbose print a diagnostic to standard error just\n\
- before each output file is opened\n\
+ before each output file is opened\n\
--help display this help and exit\n\
--version output version information and exit\n\
\n\
SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg.\n\
"));
- puts (_("\nReport bugs to textutils-bugs@gnu.ai.mit.edu"));
+ puts (_("\nReport bugs to <bug-textutils@gnu.org>."));
}
exit (status == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
static void
next_file_name (void)
{
- int x;
- char *ne;
- unsigned int i;
+ static unsigned n_digits = 2;
+ char *p;
- static int first_call = 1;
+ /* Change any suffix of `z's to `a's. */
+ for (p = outfile_end - 1; *p == 'z'; p--)
+ {
+ *p = 'a';
+ }
- /* Status for outfile name generation. */
- static unsigned outfile_count = 0;
- static unsigned outfile_name_limit = 25 * 26;
- static unsigned outfile_name_generation = 1;
+ /* Increment the rightmost non-`z' character that was present before the
+ above z/a substitutions. There is guaranteed to be such a character. */
+ ++(*p);
- if (!first_call)
- outfile_count++;
- first_call = 0;
- if (outfile_count < outfile_name_limit)
+ /* If the result of that increment operation yielded a `z' and there
+ are only `z's to the left of it, then append two more `a' characters
+ to the end and add 1 (-1 + 2) to the number of digits (we're taking
+ out this `z' and adding two `a's). */
+ if (*p == 'z' && p == outfile_mid)
{
- for (ne = outfile_end - 1; ; ne--)
- {
- x = *ne;
- if (x != 'z')
- break;
- *ne = 'a';
- }
- *ne = x + 1;
- return;
+ ++n_digits;
+ ++outfile_mid;
+ *outfile_end++ = 'a';
+ *outfile_end++ = 'a';
}
-
- outfile_count = 0;
- outfile_name_limit *= 26;
- outfile_name_generation++;
- *outfile_mid++ = 'z';
- for (i = 0; i <= outfile_name_generation; i++)
- outfile_mid[i] = 'a';
- outfile_end += 2;
}
/* Write BYTES bytes at BP to an output file.
next_file_name ();
if (verbose)
fprintf (stderr, _("creating file `%s'\n"), outfile);
- output_desc = open (outfile, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+ output_desc = open (outfile,
+ O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0666);
if (output_desc < 0)
error (EXIT_FAILURE, errno, "%s", outfile);
}
- if (full_write (output_desc, bp, bytes) < 0)
+ if (full_write (output_desc, bp, bytes) != bytes)
error (EXIT_FAILURE, errno, "%s", outfile);
}
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
+ atexit (close_stdout);
+
/* Parse command line options. */
infile = "-";
verbose = 1;
break;
+ case_GETOPT_HELP_CHAR;
+
+ case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
+
default:
usage (EXIT_FAILURE);
}
}
- if (show_version)
- {
- printf ("split (%s) %s\n", GNU_PACKAGE, VERSION);
- exit (EXIT_SUCCESS);
- }
-
- if (show_help)
- usage (0);
-
/* Handle default case. */
if (split_type == type_undef)
{
}
/* Open the input file. */
- if (!strcmp (infile, "-"))
+ if (STREQ (infile, "-"))
input_desc = 0;
else
{
if (input_desc < 0)
error (EXIT_FAILURE, errno, "%s", infile);
}
+ /* Binary I/O is safer when bytecounts are used. */
+ SET_BINARY (input_desc);
/* No output file is open now. */
output_desc = -1;
projects / platform / upstream / coreutils.git / blobdiff