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/* PSPP - a program for statistical analysis.
Copyright (C) 2010, 2011 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
the Free Software Foundation, either version 3 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, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "libpspp/u8-istream.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libpspp/i18n.h"
#include "gl/error.h"
#include "gl/progname.h"
#include "gl/xalloc.h"
static void
usage (void)
{
printf ("usage: %s COMMAND [ARG]...\n"
"The available commands are:\n"
" help\n"
" print this usage message\n"
" buffer-size\n"
" print the buffer size, in bytes, on stdout\n"
" read FILE ENCODING [OUTBUF]\n"
" read FILE encoded in ENCODING (with output buffer size\n"
" OUTBUF) and print it on stdout in UTF-8\n",
program_name);
exit (0);
}
static void
cmd_read (int argc, char *argv[])
{
struct u8_istream *is;
const char *encoding;
const char *filename;
int outbufsize;
char *buffer;
if (argc < 4 || argc > 5)
error (1, 0, "bad syntax for `%s' command; use `%s help' for help",
argv[1], program_name);
outbufsize = argc > 4 ? atoi (argv[4]) : 4096;
buffer = xmalloc (outbufsize);
filename = argv[2];
encoding = *argv[3] ? argv[3] : NULL;
is = (!strcmp(filename, "-")
? u8_istream_for_fd (encoding, STDIN_FILENO)
: u8_istream_for_file (encoding, filename, O_RDONLY));
if (is == NULL)
error (1, errno, "u8_istream_open failed");
if (u8_istream_is_auto (is))
printf ("Auto mode\n");
else if (u8_istream_is_utf8 (is))
printf ("UTF-8 mode\n");
for (;;)
{
ssize_t n;
n = u8_istream_read (is, buffer, outbufsize);
if (n > 0)
fwrite (buffer, 1, n, stdout);
else if (n < 0)
error (1, errno, "u8_istream_read failed");
else
break;
}
free (buffer);
if (u8_istream_is_auto (is))
printf ("Auto mode\n");
else if (u8_istream_is_utf8 (is))
printf ("UTF-8 mode\n");
if (!strcmp(filename, "-"))
u8_istream_free (is);
else
{
if (u8_istream_close (is) != 0)
error (1, errno, "u8_istream_close failed");
}
}
int
main (int argc, char *argv[])
{
set_program_name (argv[0]);
i18n_init ();
if (argc < 2)
error (1, 0, "missing command name; use `%s help' for help", program_name);
else if (!strcmp(argv[1], "help") || !strcmp(argv[1], "--help"))
usage ();
else if (!strcmp(argv[1], "buffer-size"))
printf ("%d\n", U8_ISTREAM_BUFFER_SIZE);
else if (!strcmp(argv[1], "read"))
cmd_read (argc, argv);
else
error (1, 0, "unknown command `%s'; use `%s help' for help",
argv[1], program_name);
return 0;
}
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