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/*
* A clean reimplementation of StarDict's tabfile
*
* Copyright (c) 2020 - 2021, Přemysl Eric Janouch <p@janouch.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <locale.h>
#include <glib.h>
#include <gio/gio.h>
#include "stardict.h"
#include "stardict-private.h"
#include "generator.h"
#include "utils.h"
static gboolean
set_data_error (GError **error, const char *message)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA, message);
return FALSE;
}
static const gchar escapes[256] = { ['n'] = '\n', ['t'] = '\t', ['\\'] = '\\' };
static gboolean
inplace_unescape (char *line, GError **error)
{
gboolean escape = FALSE;
char *dest = line;
for (char *src = line; *src; src++)
{
if (escape)
{
escape = FALSE;
if (!(*dest++ = escapes[(guchar) *src]))
return set_data_error (error, "unsupported escape");
}
else if (*src == '\\')
escape = TRUE;
else
*dest++ = *src;
}
if (escape)
return set_data_error (error, "trailing escape character");
*dest = 0;
return TRUE;
}
static gboolean
import_line (Generator *generator, char *line, size_t len, GError **error)
{
if (!len)
return TRUE;
char *separator = strchr (line, '\t');
if (!separator)
return set_data_error (error, "keyword separator not found");
*separator++ = 0;
if (strchr (line, '\\'))
// The index wouldn't be sorted correctly with our method
return set_data_error (error, "escapes not allowed in keywords");
char *newline = strpbrk (separator, "\r\n");
if (newline)
*newline = 0;
if (!inplace_unescape (line, error)
|| !inplace_unescape (separator, error))
return FALSE;
generator_begin_entry (generator);
return generator_write_string (generator, separator, TRUE, error)
&& generator_finish_entry (generator, line, error);
}
static gboolean
transform (FILE *fsorted, Generator *generator, GError **error)
{
char *line = NULL;
size_t size = 0, ln = 1;
for (ssize_t read; (read = getline (&line, &size, fsorted)) >= 0; ln++)
if (!import_line (generator, line, read, error))
break;
free (line);
if (ferror (fsorted))
{
g_set_error_literal (error, G_IO_ERROR,
g_io_error_from_errno (errno), g_strerror (errno));
return FALSE;
}
if (!feof (fsorted))
{
// You'll only get good line number output with presorted input!
g_prefix_error (error, "line %zu: ", ln);
return FALSE;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
// The GLib help includes an ellipsis character, for some reason
(void) setlocale (LC_ALL, "");
GError *error = NULL;
GOptionContext *ctx = g_option_context_new ("output-basename < input");
g_option_context_set_summary (ctx,
"Create a StarDict dictionary from plaintext.");
if (!g_option_context_parse (ctx, &argc, &argv, &error))
fatal ("Error: option parsing failed: %s\n", error->message);
if (argc != 2)
fatal ("%s", g_option_context_get_help (ctx, TRUE, FALSE));
g_option_context_free (ctx);
// This actually implements stardict_strcmp(), POSIX-compatibly.
// Your sort(1) is not expected to be stable by default, like bsdsort is.
FILE *fsorted = popen ("LC_ALL=C sort -t'\t' -k1f,1", "r");
if (!fsorted)
fatal ("%s: %s\n", "popen", g_strerror (errno));
Generator *generator = generator_new (argv[1], &error);
if (!generator)
fatal ("Error: failed to create the output dictionary: %s\n",
error->message);
StardictInfo *info = generator->info;
info->version = SD_VERSION_3_0_0;
info->book_name = g_strdup (argv[1]);
info->same_type_sequence = g_strdup ("m");
// This gets incremented each time an entry is finished
info->word_count = 0;
if (!transform (fsorted, generator, &error)
|| !generator_finish (generator, &error))
fatal ("Error: failed to write the dictionary: %s\n", error->message);
generator_free (generator);
fclose (fsorted);
return 0;
}
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