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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/line-reader.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libpspp/i18n.h"
#include "libpspp/str.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\n"
" read FILE encoded in ENCODING and print it in UTF-8\n",
program_name);
exit (0);
}
static void
cmd_read (int argc, char *argv[])
{
struct line_reader *r;
const char *filename;
struct string line;
if (argc != 4)
error (1, 0, "bad syntax for `%s' command; use `%s help' for help",
argv[1], program_name);
filename = argv[2];
r = (!strcmp(filename, "-")
? line_reader_for_fd (argv[3], STDIN_FILENO)
: line_reader_for_file (argv[3], filename, O_RDONLY));
if (r == NULL)
error (1, errno, "line_reader_open failed");
char *encoding = xstrdup (line_reader_get_encoding (r));
printf ("encoded in %s", encoding);
if (line_reader_is_auto (r))
printf (" (auto)");
printf ("\n");
ds_init_empty (&line);
while (line_reader_read (r, &line, SIZE_MAX))
{
const char *new_encoding;
char *utf8_line;
new_encoding = line_reader_get_encoding (r);
if (strcmp (encoding, new_encoding))
{
free (encoding);
encoding = xstrdup (new_encoding);
printf ("encoded in %s", encoding);
if (line_reader_is_auto (r))
printf (" (auto)");
printf ("\n");
}
utf8_line = recode_string ("UTF-8", encoding,
ds_data (&line), ds_length (&line));
printf ("\"%s\"\n", utf8_line);
free (utf8_line);
ds_clear (&line);
}
free (encoding);
ds_destroy (&line);
if (!strcmp(filename, "-"))
line_reader_free (r);
else
{
if (line_reader_close (r) != 0)
error (1, errno, "line_reader_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", LINE_READER_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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