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/* This file is part of GNU Dico.
Copyright (C) 2012-2024 Sergey Poznyakoff
GNU Dico 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, or (at your option)
any later version.
GNU Dico 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 GNU Dico. If not, see <http://www.gnu.org/licenses/>. */
#include "dico.h"
/* GCIDE-specific definitions. */
#define GCIDE_IDX_MAGIC "GCIDEIDX"
#define GCIDE_IDX_MAGIC_LEN (sizeof(GCIDE_IDX_MAGIC)-1)
#define GCIDE_IDX_VERSION 1
#define GCIDE_IDX_HEADER_PAGESIZE 10240
#define GCIDE_IDX_FILE_NAME "GCIDE.IDX"
struct gcide_idx_header {
char ihdr_magic[GCIDE_IDX_MAGIC_LEN];
int ihdr_version;
unsigned long ihdr_pagesize;
unsigned long ihdr_maxpageref;
unsigned long ihdr_num_pages;
unsigned long ihdr_num_headwords;
unsigned long ihdr_num_defs;
};
struct gcide_ref {
unsigned long ref_hwoff;
unsigned long ref_hwlen;
unsigned long ref_hwbytelen;
int ref_letter;
unsigned long ref_offset;
unsigned long ref_size;
char *ref_headword;
char ref_primary;
};
struct gcide_page_header {
size_t phdr_numentries;
size_t phdr_text_offset;
};
struct gcide_idx_page {
union {
struct gcide_page_header hdr;
struct gcide_ref align;
} ipg_header;
struct gcide_ref ipg_ref[1];
};
typedef struct gcide_idx_file *gcide_idx_file_t;
typedef struct gcide_iterator *gcide_iterator_t;
struct gcide_locus {
char const *file;
size_t offset;
};
enum {
IDXE_OK,
IDXE_BADFILE,
IDXE_BADVER,
IDXE_CORRUPT,
IDXE_SYSERR
};
int gcide_idx_file_open(const char *name, size_t cachesize, int rw,
struct gcide_idx_file **ret_file);
void gcide_idx_file_close(gcide_idx_file_t file);
int gcide_idx_lock(struct gcide_idx_file *file, int ex);
int gcide_idx_unlock(struct gcide_idx_file *file);
int gcide_idx_reopen(struct gcide_idx_file *file);
int gcide_idx_fileno(struct gcide_idx_file *file);
size_t gcide_idx_headwords(struct gcide_idx_file *file);
size_t gcide_idx_defs(struct gcide_idx_file *file);
int gcide_idx_enumerate(struct gcide_idx_file *file,
int (*fun)(struct gcide_ref *, void *),
void *data);
gcide_iterator_t gcide_idx_locate(struct gcide_idx_file *file, char *headword,
size_t len);
void gcide_iterator_free(gcide_iterator_t itr);
int gcide_iterator_next(gcide_iterator_t itr);
int gcide_iterator_rewind(gcide_iterator_t itr);
struct gcide_ref *gcide_iterator_ref(gcide_iterator_t itr);
size_t gcide_iterator_count(gcide_iterator_t itr);
size_t gcide_iterator_compare_count(gcide_iterator_t itr);
void gcide_iterator_store_flags(gcide_iterator_t itr, int flags);
int gcide_iterator_flags(gcide_iterator_t itr);
extern char gcide_webchr[256][4];
char const *gcide_escape_to_utf8(const char *esc);
char const *gcide_entity_to_utf8(const char *str);
const char *gcide_grk_to_utf8(const char *input, size_t *prd);
enum gcide_content_type
{
gcide_content_top, /* Top-level element: same as gcide_content_tag, but
with tag_parmc == 0 and tag_parmv == NULL. */
gcide_content_tag, /* Regular tag. */
gcide_content_text, /* Text segment. */
gcide_content_nl, /* "Soft" newline. */
gcide_content_br /* Line break. */
};
struct gcide_tag {
size_t offset;
enum gcide_content_type tag_type;
struct gcide_tag *tag_next;
# define tag_name v.tag.tag_parmv[0]
int delete;
union {
char *text;
size_t textpos;
struct {
size_t tag_parmc;
char **tag_parmv;
dico_list_t taglist;
} tag;
} v;
};
struct gcide_parse_tree {
char *textspace;
size_t textsize;
struct gcide_tag *root;
};
struct gcide_parse_tree *gcide_markup_parse(char const *text, size_t len,
int dbg, struct gcide_locus *loc);
void gcide_parse_tree_free(struct gcide_parse_tree *tp);
int gcide_parse_tree_inorder(struct gcide_parse_tree *tp,
int (*fun)(int, struct gcide_tag *, void *),
void *data);
int gcide_is_block_tag(struct gcide_tag *tag);
struct gcide_tag *gcide_tag_alloc(const char *text, size_t len);
void gcide_tag_free(struct gcide_tag *tag);
int gcide_is_tag(struct gcide_tag *tag, char const *name);
typedef struct pollfd *WATCHER;
#if WITH_INOTIFY
WATCHER watcher_setup(char const *dbdir);
void watcher_close(WATCHER w);
int watcher_is_modified(WATCHER w);
#else
# define watcher_setup(dbdir) NULL
# define watcher_close(w)
# define watcher_is_modified(w) 1
#endif
#ifndef SIZE_MAX
# define SIZE_MAX ((size_t)-1)
#endif
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