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/* vim:set et sts=4: */
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#include "PinyinParser.h"
namespace PY {
#include "PinyinParserTable.h"
static int
py_cmp (const void *p1, const void *p2)
{
const gchar *str = (const gchar *) p1;
const Pinyin *py = (const Pinyin *) p2;
return strcmp (str, py->text);
}
static const Pinyin *
is_pinyin (const gchar *p,
const gchar *end,
gint len,
guint option)
{
gchar buf[8];
const Pinyin *result;
if (G_UNLIKELY (len > 6))
return NULL;
if (G_UNLIKELY (len > end - p))
return NULL;
if (G_LIKELY (len > 0)) {
strncpy (buf, p, len);
buf[len] = 0;
result = (const Pinyin *) bsearch (buf, pinyin_table, PINYIN_TABLE_NR,
sizeof (Pinyin), py_cmp);
if (G_UNLIKELY (result == NULL))
return NULL;
if (G_LIKELY (result->flags == 0))
return result;
if(G_LIKELY (result->flags & option))
return result;
return NULL;
}
len = strnlen (p, 6);
len = MIN (len, end - p);
strncpy (buf, p, len);
for (; len > 0; len --) {
buf[len] = 0;
result = (const Pinyin *) bsearch (buf, pinyin_table, PINYIN_TABLE_NR,
sizeof (Pinyin), py_cmp);
if (G_UNLIKELY (result && ((result->flags == 0) || (result->flags & option)))) {
return result;
}
}
return NULL;
}
static int
sp_cmp (const void *p1,
const void *p2)
{
const Pinyin **pys = (const Pinyin **) p1;
const Pinyin **e = (const Pinyin **) p2;
return ((pys[0] - e[0]) << 16) + (pys[1] - e[1]);
}
static const Pinyin **
need_resplit(const Pinyin *p1,
const Pinyin *p2)
{
const Pinyin * pys[] = {p1, p2};
return (const Pinyin **) bsearch (pys, special_table, SPECIAL_TABLE_NR,
sizeof (special_table[0]), sp_cmp);
}
guint
PinyinParser::parse (const String &pinyin,
gint len,
guint option,
PinyinArray &result,
guint max)
{
const gchar *p;
const gchar *end;
const Pinyin *py;
const Pinyin *prev_py;
gchar prev_c;
result.removeAll ();
if (G_UNLIKELY (len < 0))
len = pinyin.length ();
p = pinyin;
end = p + len;
prev_py = NULL;
prev_c = 0;
for (; p < end && result.length () < max; ) {
switch (prev_c) {
case 'r':
case 'n':
case 'g':
case 'e':
switch (*p) {
case 'i':
case 'u':
case 'v':
case 'a':
case 'e':
case 'o':
case 'r':
{
const Pinyin **pp;
const Pinyin *new_py1;
const Pinyin *new_py2;
py = is_pinyin (p, end, -1, option);
if ((new_py1 = is_pinyin (prev_py->text,
prev_py->text + prev_py->len,
prev_py->len - 1,
option)) != NULL) {
new_py2 = is_pinyin (p -1, end, -1, option);
if (((new_py2 != NULL) && (new_py2->len > 1 )) &&
(py == NULL || new_py2->len > py->len + 1)) {
result[result.length () - 1].set (
new_py1,
result[result.length () - 1].begin,
new_py1->len);
py = new_py2;
p --;
break;
}
}
if ( py == NULL)
break;
pp = need_resplit (prev_py, py);
if (pp != NULL) {
result[result.length () - 1].set (
pp[2],
result[result.length () - 1].begin,
pp[2]->len);
py = pp[3];
p --;
break;
}
}
default:
py = is_pinyin (p, end, -1, option);
break;
}
break;
default:
py = is_pinyin (p, end, -1, option);
break;
}
if (G_UNLIKELY (py == NULL))
break;
result.append (py, p - (const gchar *) pinyin, py->len);
p += py->len;
prev_c = py->text[py->len - 1];
prev_py = py;
if (G_UNLIKELY (*p == '\'')) {
prev_c = '\'';
p++;
}
}
if (G_UNLIKELY (p == (const gchar *)pinyin))
return 0;
#if 0
if (G_UNLIKELY (*(p - 1) == '\''))
p --;
#endif
return p - (const gchar *)pinyin;
}
static const gchar *id_map[] = {
"", "b", "c", "ch",
"d", "f", "g", "h",
"j", "k", "l", "m",
"n", "p", "q", "r",
"s", "sh", "t", "w",
"x", "y", "z", "zh",
"a", "ai", "an", "ang", "ao",
"e", "ei", "en", "eng", "er",
"i", "ia", "ian", "iang", "iao",
"ie", "in", "ing", "iong", "iu",
"o", "ong", "ou",
"u", "ua", "uai", "uan", "uang",
"ue", "ui", "un", "uo", "v"
};
const Pinyin *
PinyinParser::isPinyin (gint sheng, gint yun, guint option)
{
const Pinyin *result;
gchar buf[8];
g_strlcpy (buf, id_map[sheng], sizeof (buf));
g_strlcat (buf, id_map[yun], sizeof (buf));
result = (const Pinyin *) bsearch (buf, pinyin_table, PINYIN_TABLE_NR,
sizeof (Pinyin), py_cmp);
if (result != NULL && result->flags != 0 && (result->flags & option) == 0)
return NULL;
return result;
}
};
#ifdef TEST
#include <glib/gprintf.h>
int main(int argc, char **argv)
{
gint len;
GArray *array;
Pinyin **p;
gchar *str;
str = "qinaide";
if (argc > 1)
str = argv[1];
array = g_array_new (TRUE, TRUE, sizeof (Pinyin *));
len = py_parse_pinyin (str, -1, 0xffffffff, array);
if (len) {
p = (Pinyin **) array->data;
while (*p) {
g_printf ("%s'", (*p)->text);
p ++;
}
}
g_printf ("%s\n", str + len);
return 0;
}
#endif
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