From 8d19acd91af9592d862ef2a7aa8e95eea4160152 Mon Sep 17 00:00:00 2001 From: Přemysl Eric Janouch Date: Thu, 3 Sep 2020 23:17:17 +0200 Subject: Add a tool to transform dictionaries --- src/transform.c | 270 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 270 insertions(+) create mode 100644 src/transform.c (limited to 'src/transform.c') diff --git a/src/transform.c b/src/transform.c new file mode 100644 index 0000000..2d5c2f2 --- /dev/null +++ b/src/transform.c @@ -0,0 +1,270 @@ +/* + * A tool to transform dictionaries dictionaries by an external filter + * + * The external filter needs to process NUL-separated textual entries. + * + * Example: transform input.info output -- perl -p0e s/bullshit/soykaf/g + * + * Copyright (c) 2020, Přemysl Eric Janouch + * + * 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 +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "stardict.h" +#include "stardict-private.h" +#include "generator.h" + +enum { PIPE_READ, PIPE_WRITE }; + + +// --- Main -------------------------------------------------------------------- + +static inline void +print_progress (gulong *last_percent, StardictIterator *iterator, gsize total) +{ + gulong percent = + (gulong) stardict_iterator_get_offset (iterator) * 100 / total; + if (percent != *last_percent) + { + printf ("\r Writing entries... %3lu%%", percent); + *last_percent = percent; + } +} + +static gboolean +write_to_filter (StardictDict *dict, gint fd, GError **error) +{ + StardictInfo *info = stardict_dict_get_info (dict); + gsize n_words = stardict_info_get_word_count (info); + + StardictIterator *iterator = stardict_iterator_new (dict, 0); + gulong last_percent = -1; + while (stardict_iterator_is_valid (iterator)) + { + print_progress (&last_percent, iterator, n_words); + + StardictEntry *entry = stardict_iterator_get_entry (iterator); + for (const GList *fields = stardict_entry_get_fields (entry); + fields; fields = fields->next) + { + StardictEntryField *field = fields->data; + if (!g_ascii_islower (field->type)) + continue; + + if (write (fd, field->data, field->data_size) + != (ssize_t) field->data_size) + { + g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, + "%s", strerror (errno)); + return FALSE; + } + } + + g_object_unref (entry); + stardict_iterator_next (iterator); + } + printf ("\n"); + return TRUE; +} + +static gboolean +update_from_filter (StardictDict *dict, Generator *generator, + GMappedFile *filtered_file, GError **error) +{ + gchar *filtered = g_mapped_file_get_contents (filtered_file); + gchar *filtered_end = filtered + g_mapped_file_get_length (filtered_file); + + StardictInfo *info = stardict_dict_get_info (dict); + gsize n_words = stardict_info_get_word_count (info); + + StardictIterator *iterator = stardict_iterator_new (dict, 0); + gulong last_percent = -1; + while (stardict_iterator_is_valid (iterator)) + { + print_progress (&last_percent, iterator, n_words); + + StardictEntry *entry = stardict_iterator_get_entry (iterator); + generator_begin_entry (generator); + + for (GList *fields = entry->fields; fields; fields = fields->next) + { + StardictEntryField *field = fields->data; + if (!g_ascii_islower (field->type)) + continue; + + gchar *end = memchr (filtered, 0, filtered_end - filtered); + if (!end) + { + g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, + "filter seems to have ended too early"); + return FALSE; + } + + g_free (field->data); + field->data = g_strdup (filtered); + field->data_size = end - filtered + 1; + filtered = end + 1; + } + + if (!generator_write_fields (generator, entry->fields, error) + || !generator_finish_entry (generator, + stardict_iterator_get_word (iterator), error)) + return FALSE; + + g_object_unref (entry); + stardict_iterator_next (iterator); + } + printf ("\n"); + return TRUE; +} + +// FIXME: copied from add-pronunciation.c, should merge it somewhere (utils?) +/// Copy the contents of one StardictInfo object into another. Ignores path. +static void +stardict_info_copy (StardictInfo *dest, const StardictInfo *src) +{ + dest->version = src->version; + + guint i; + for (i = 0; i < _stardict_ifo_keys_length; i++) + { + const struct stardict_ifo_key *key = &_stardict_ifo_keys[i]; + if (key->type == IFO_STRING) + { + gchar **p = &G_STRUCT_MEMBER (gchar *, dest, key->offset); + gchar *q = G_STRUCT_MEMBER (gchar *, src, key->offset); + + g_free (*p); + *p = q ? g_strdup (q) : NULL; + } + else + G_STRUCT_MEMBER (gulong, dest, key->offset) = + G_STRUCT_MEMBER (gulong, src, key->offset); + } +} + +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 + ("input.ifo output-basename -- FILTER [ARG...]"); + g_option_context_set_summary + (ctx, "Transform dictionaries using a filter program."); + g_option_context_set_description (ctx, "Test?"); + if (!g_option_context_parse (ctx, &argc, &argv, &error)) + { + g_printerr ("Error: option parsing failed: %s\n", error->message); + exit (EXIT_FAILURE); + } + + if (argc < 3) + { + gchar *help = g_option_context_get_help (ctx, TRUE, FALSE); + g_printerr ("%s", help); + g_free (help); + exit (EXIT_FAILURE); + } + + // GLib is bullshit, getopt_long() always correctly removes this + gint program_argv_start = 3; + if (!strcmp (argv[program_argv_start], "--")) + program_argv_start++; + + g_option_context_free (ctx); + + printf ("Loading the original dictionary...\n"); + StardictDict *dict = stardict_dict_new (argv[1], &error); + if (!dict) + { + g_printerr ("Error: opening the dictionary failed: %s\n", + error->message); + exit (EXIT_FAILURE); + } + + printf ("Filtering entries...\n"); + gint child_in[2]; + if (!g_unix_open_pipe (child_in, 0, &error)) + g_error ("g_unix_open_pipe: %s", error->message); + + FILE *child_out = tmpfile (); + if (!child_out) + g_error ("tmpfile: %s", strerror (errno)); + + GPid pid = -1; + if (!g_spawn_async_with_fds (NULL /* working_directory */, + argv + program_argv_start /* forward a part of ours */, NULL /* envp */, + G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD, + NULL /* child_setup */, NULL /* user_data */, + &pid, child_in[PIPE_READ], fileno (child_out), STDERR_FILENO, &error)) + g_error ("g_spawn: %s", error->message); + if (!write_to_filter (dict, child_in[PIPE_WRITE], &error)) + g_error ("write_to_filter: %s", error->message); + if (!g_close (child_in[PIPE_READ], &error) + || !g_close (child_in[PIPE_WRITE], &error)) + g_error ("g_close: %s", error->message); + + printf ("Waiting for the filter to finish...\n"); + int wstatus = errno = 0; + if (waitpid (pid, &wstatus, 0) < 1 + || !WIFEXITED (wstatus) || WEXITSTATUS (wstatus) > 0) + g_error ("Filter failed (%s, status %d)", strerror (errno), wstatus); + + GMappedFile *filtered = g_mapped_file_new_from_fd (fileno (child_out), + FALSE /* writable */, &error); + if (!filtered) + g_error ("g_mapped_file_new_from_fd: %s", error->message); + + printf ("Writing the new dictionary...\n"); + Generator *generator = generator_new (argv[2], &error); + if (!generator) + { + g_printerr ("Error: failed to create the output dictionary: %s\n", + error->message); + exit (EXIT_FAILURE); + } + + StardictInfo *info = generator->info; + stardict_info_copy (info, stardict_dict_get_info (dict)); + + // This gets incremented each time an entry is finished + info->word_count = 0; + + if (!update_from_filter (dict, generator, filtered, &error) + || !generator_finish (generator, &error)) + { + g_printerr ("Error: failed to write the dictionary: %s\n", + error->message); + exit (EXIT_FAILURE); + } + + g_mapped_file_unref (filtered); + fclose (child_out); + generator_free (generator); + g_object_unref (dict); + return 0; +} -- cgit v1.2.3-70-g09d2