From 166f65c916579eec9ed3004879a71146ecad6443 Mon Sep 17 00:00:00 2001
From: Peng Wu <alexepico@gmail.com>
Date: Tue, 17 May 2016 17:25:49 +0800
Subject: write inner_split_step function

---
 src/storage/phonetic_key_matrix.cpp |  2 ++
 src/storage/phonetic_key_matrix.h   |  9 ++++++
 src/storage/pinyin_parser2.cpp      | 56 +++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+)

diff --git a/src/storage/phonetic_key_matrix.cpp b/src/storage/phonetic_key_matrix.cpp
index af5b1a0..6f92e45 100644
--- a/src/storage/phonetic_key_matrix.cpp
+++ b/src/storage/phonetic_key_matrix.cpp
@@ -72,6 +72,7 @@ bool fill_phonetic_key_matrix_from_chewing_keys(PhoneticKeyMatrix * matrix,
     return true;
 }
 
+
 bool fuzzy_syllable_step(pinyin_option_t options,
                          PhoneticKeyMatrix * matrix) {
     size_t length = matrix->size();
@@ -160,6 +161,7 @@ bool fuzzy_syllable_step(pinyin_option_t options,
     return true;
 }
 
+
 bool dump_phonetic_key_matrix(PhoneticKeyMatrix * matrix) {
     size_t length = matrix->size();
 
diff --git a/src/storage/phonetic_key_matrix.h b/src/storage/phonetic_key_matrix.h
index 8d6b49a..f5054bd 100644
--- a/src/storage/phonetic_key_matrix.h
+++ b/src/storage/phonetic_key_matrix.h
@@ -143,6 +143,15 @@ bool fill_phonetic_key_matrix_from_chewing_keys(PhoneticKeyMatrix * matrix,
                                                 ChewingKeyVector keys,
                                                 ChewingKeyRestVector key_rests);
 
+/**
+ * inner_split_step:
+ * For "xian" => "xi'an", add "xi'an" to the matrix for matched "xian".
+ * Currently only support this feature in Hanyu Pinyin.
+ */
+bool inner_split_step(pinyin_option_t options,
+                      PhoneticKeyMatrix * matrix);
+
+
 /**
  * fuzzy_syllable_step:
  * For "an" <=> "ang", fill the fuzzy pinyins into the matrix.
diff --git a/src/storage/pinyin_parser2.cpp b/src/storage/pinyin_parser2.cpp
index 66ee0df..a4f5cae 100644
--- a/src/storage/pinyin_parser2.cpp
+++ b/src/storage/pinyin_parser2.cpp
@@ -32,6 +32,7 @@
 #include "chewing_key.h"
 #include "pinyin_parser_table.h"
 #include "double_pinyin_table.h"
+#include "phonetic_key_matrix.h"
 
 
 using namespace pinyin;
@@ -899,3 +900,58 @@ int PinyinDirectParser2::parse(pinyin_option_t options,
 
     return parsed_len;
 }
+
+
+/* need to use the pinyin_parser_table header. */
+bool inner_split_step(pinyin_option_t options,
+                      PhoneticKeyMatrix * matrix) {
+    size_t length = matrix->size();
+
+    GArray * keys = g_array_new(TRUE, TRUE, sizeof(ChewingKey));
+    GArray * key_rests = g_array_new(TRUE, TRUE, sizeof(ChewingKeyRest));
+
+    for (size_t index = 0; index < length; ++index) {
+        matrix->get_items(index, keys, key_rests);
+        assert(keys->len == key_rests->len);
+        if (0 ==  keys->len)
+            continue;
+
+        for (size_t i = 0; i < keys->len; ++i) {
+            const ChewingKey key = g_array_index(keys, ChewingKey, i);
+            const ChewingKeyRest key_rest = g_array_index(key_rests,
+                                                          ChewingKeyRest, i);
+
+            /* lookup divided table */
+            size_t k;
+            const divided_table_item_t * item = NULL;
+            for (k = 0; k < G_N_ELEMENTS(divided_table); ++k) {
+                item = divided_table + k;
+
+                if (key == item->m_orig_struct)
+                    break;
+            }
+
+            /* found the match */
+            if (k < G_N_ELEMENTS(divided_table)) {
+                /* divide the key */
+                item = divided_table + k;
+
+                size_t midindex = index + strlen(item->m_new_keys[0]);
+
+                ChewingKey newkey = item->m_new_structs[0];
+                ChewingKeyRest newkeyrest = key_rest;
+                newkeyrest.m_raw_end = midindex;
+                matrix->append(index, newkey, newkeyrest);
+
+                newkey = item->m_new_structs[1];
+                newkeyrest = key_rest;
+                newkeyrest.m_raw_begin = midindex;
+                matrix->append(midindex, newkey, newkeyrest);
+            }
+        }
+    }
+
+    g_array_free(keys, TRUE);
+    g_array_free(key_rests, TRUE);
+    return true;
+}
-- 
cgit