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#ifndef EVAS_TEXTBLOCK_HYPHENATION_H
#define EVAS_TEXTBLOCK_HYPHENATION_H
#ifdef HAVE_HYPHEN
#include <hyphen.h>
typedef struct
{
const char *lang;
HyphenDict *dict;
} Dict_Hyphen;
/* Hyphenation dictionaries */
static Dict_Hyphen _dicts_hyphen[64];
static size_t _hyphens_num = 0;
static size_t _hyphen_clients = 0;
static void
_dicts_hyphen_init(Eo *eo_obj)
{
Evas_Textblock_Legacy_Data *o = efl_data_scope_get(eo_obj, MY_CLASS);
if (!o->hyphenating)
{
_hyphen_clients++;
o->hyphenating = EINA_TRUE;
}
}
static HyphenDict *
_dict_hyphen_load(const char *lang)
{
Eina_Iterator *it = NULL;
Eina_File_Direct_Info *dir;
HyphenDict *dict = NULL;
const char *env_dir = getenv("EVAS_DICTS_HYPHEN_DIR");
if (env_dir && strlen(env_dir) > 0)
it = eina_file_direct_ls(env_dir);
if (!it) it = eina_file_direct_ls(EVAS_DICTS_HYPHEN_DIR);
if (!it)
{
ERR("Couldn't list files in hyphens path: %s\n", EVAS_DICTS_HYPHEN_DIR);
return NULL;
}
/* The following is based on how files are installed in arch linux:
* the files are in the pattern of "hyph_xx_XX.dic" (e.g. hyph_en_US.dic).
* We are actually trying a bit more in case these are installed in another
* name. We assume that they probably end in "xx_XX.dic" anyway. */
EINA_ITERATOR_FOREACH(it, dir)
{
const char *file = dir->path + dir->name_start;
char *prefix_off; /* 'hyph_' prefix (may be in some distros) */
char *dic_off; /* '.dic' file extension offset */
/* Check a few assumptions and reject if aren't met. */
prefix_off = strstr(file, "hyph_");
dic_off = strrchr(file, '.');
if (!dic_off || ((size_t) (dic_off - file) + 4 != dir->name_length) ||
(dic_off - file < 5) ||
((dic_off - file > 0) && !prefix_off) ||
strncmp(dic_off, ".dic", 4) || strncmp((dic_off - 5), lang, strlen(lang)))
{
continue;
}
dict = hnj_hyphen_load(dir->path);
if (!dict)
{
ERR("Couldn't load hyphen dictionary: %s\n", dic_off - 5);
continue;
}
_dicts_hyphen[_hyphens_num].lang = eina_strndup(dic_off - 5, 5);
_dicts_hyphen[_hyphens_num++].dict = dict;
break;
}
if (it) eina_iterator_free(it);
return dict;
}
static void
_dicts_hyphen_free(void)
{
if (_hyphens_num == 0) return;
for (size_t i = 0; i < _hyphens_num; i++)
{
hnj_hyphen_free(_dicts_hyphen[i].dict);
}
_hyphens_num = 0;
}
static inline void
_dicts_hyphen_detach(Eo *eo_obj)
{
Evas_Textblock_Legacy_Data *o = efl_data_scope_get(eo_obj, MY_CLASS);
if (!o->hyphenating) return;
o->hyphenating = EINA_FALSE;
_hyphen_clients--;
if (_hyphen_clients == 0) _dicts_hyphen_free();
}
/* Returns the hyphen dictionary that matches the given language
* string. The string should be in the format xx_XX e.g. en_US */
static inline HyphenDict *
_hyphen_dict_get_from_lang(const char *lang)
{
if (!lang || !(*lang))
{
if (!lang) lang = evas_common_language_from_locale_full_get();
if (!lang || !(*lang)) return NULL;
}
for (size_t i = 0; i < _hyphens_num; i++)
{
if (!strcmp(_dicts_hyphen[i].lang, lang))
{
return _dicts_hyphen[i].dict;
}
}
return _dict_hyphen_load(lang);
}
static char *
_layout_wrap_hyphens_get(const Eina_Unicode *text, const char *lang,
int word_start, int word_len)
{
char *hyphens = NULL;
char **rep = NULL;
int *pos = NULL;
int *cut = NULL;
HyphenDict *dict;
char *converted_text = NULL;
size_t converted_text_offset = 0;
size_t converted_len = 0;
dict = _hyphen_dict_get_from_lang(lang);
if (!dict)
{
ERR("Couldn't find matching dictionary and couldn't fallback to locale %s\n", lang);
return NULL;
}
/* Convert UTF-32 encoded text to the other encoding
* which is described in hyphen dictionary. */
if (strcmp(dict->cset, "UTF-32"))
{
converted_text = eina_str_convert_len("UTF-32", dict->cset,
(char *)(text + word_start),
word_len * sizeof(Eina_Unicode),
&converted_len);
if (!converted_text) goto hyphens_done;
/* Skip BOM character (0xFFFE) from converted text */
if ((converted_len >= 2) &&
(converted_text[0] == 0xff) &&
(converted_text[1] == 0xfe))
converted_text_offset = 2;
/* If there is only a BOM character, return NULL */
if (converted_len == converted_text_offset)
goto hyphens_done;
}
if (converted_text)
{
hyphens = malloc(sizeof(char) * (converted_len + 5));
hnj_hyphen_hyphenate2(dict, converted_text + converted_text_offset,
(int)(converted_len - converted_text_offset), hyphens, NULL, &rep, &pos, &cut);
}
else
{
hyphens = malloc(sizeof(char) * (word_len + 5));
hnj_hyphen_hyphenate2(dict, (char *)(text + word_start),
word_len, hyphens, NULL, &rep, &pos, &cut);
}
hyphens_done:
if (converted_text) free(converted_text);
return hyphens;
}
#endif //HAVE_HYPHEN
#endif //EVAS_TEXTBLOCK_HYPHENATION_H_
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