Hand merge from cupcake_dcm from donut, part 1.
Add SQL functions "GET_PHONETICALLY_SORTABLE_STRING()" and "GET_NORMALIZED_STRING()" and its tests.
diff --git a/android/PhoneticStringUtils.cpp b/android/PhoneticStringUtils.cpp
index 5f8781c..24b1647 100644
--- a/android/PhoneticStringUtils.cpp
+++ b/android/PhoneticStringUtils.cpp
@@ -81,6 +81,156 @@
return codepoint;
}
+// Get hiragana from halfwidth katakana.
+static int GetHiraganaFromHalfwidthKatakana(int codepoint,
+ int next_codepoint,
+ bool *next_is_consumed) {
+ if (codepoint < 0xFF66 || 0xFF9F < codepoint) {
+ return codepoint;
+ }
+
+ switch (codepoint) {
+ case 0xFF66: // wo
+ return 0x3092;
+ case 0xFF67: // xa
+ return 0x3041;
+ case 0xFF68: // xi
+ return 0x3043;
+ case 0xFF69: // xu
+ return 0x3045;
+ case 0xFF6A: // xe
+ return 0x3047;
+ case 0xFF6B: // xo
+ return 0x3049;
+ case 0xFF6C: // xya
+ return 0x3083;
+ case 0xFF6D: // xyu
+ return 0x3085;
+ case 0xFF6E: // xyo
+ return 0x3087;
+ case 0xFF6F: // xtsu
+ return 0x3063;
+ case 0xFF70: // -
+ return 0x30FC;
+ case 0xFF9C: // wa
+ return 0x308F;
+ case 0xFF9D: // n
+ return 0x3093;
+ break;
+ default: {
+ if (0xFF71 <= codepoint && codepoint <= 0xFF75) {
+ // a, i, u, e, o
+ if (codepoint == 0xFF73 && next_codepoint == 0xFF9E) {
+ if (next_is_consumed != NULL) {
+ *next_is_consumed = true;
+ }
+ return 0x3094; // vu
+ } else {
+ return 0x3042 + (codepoint - 0xFF71) * 2;
+ }
+ } else if (0xFF76 <= codepoint && codepoint <= 0xFF81) {
+ // ka - chi
+ if (next_codepoint == 0xFF9E) {
+ // "dakuten" (voiced mark)
+ if (next_is_consumed != NULL) {
+ *next_is_consumed = true;
+ }
+ return 0x304B + (codepoint - 0xFF76) * 2 + 1;
+ } else {
+ return 0x304B + (codepoint - 0xFF76) * 2;
+ }
+ } else if (0xFF82 <= codepoint && codepoint <= 0xFF84) {
+ // tsu, te, to (skip xtsu)
+ if (next_codepoint == 0xFF9E) {
+ // "dakuten" (voiced mark)
+ if (next_is_consumed != NULL) {
+ *next_is_consumed = true;
+ }
+ return 0x3064 + (codepoint - 0xFF82) * 2 + 1;
+ } else {
+ return 0x3064 + (codepoint - 0xFF82) * 2;
+ }
+ } else if (0xFF85 <= codepoint && codepoint <= 0xFF89) {
+ // na, ni, nu, ne, no
+ return 0x306A + (codepoint - 0xFF85);
+ } else if (0xFF8A <= codepoint && codepoint <= 0xFF8E) {
+ // ha, hi, hu, he, ho
+ if (next_codepoint == 0xFF9E) {
+ // "dakuten" (voiced mark)
+ if (next_is_consumed != NULL) {
+ *next_is_consumed = true;
+ }
+ return 0x306F + (codepoint - 0xFF8A) * 3 + 1;
+ } else if (next_codepoint == 0xFF9F) {
+ // "han-dakuten" (half voiced mark)
+ if (next_is_consumed != NULL) {
+ *next_is_consumed = true;
+ }
+ return 0x306F + (codepoint - 0xFF8A) * 3 + 2;
+ } else {
+ return 0x306F + (codepoint - 0xFF8A) * 3;
+ }
+ } else if (0xFF8F <= codepoint && codepoint <= 0xFF93) {
+ // ma, mi, mu, me, mo
+ return 0x307E + (codepoint - 0xFF8F);
+ } else if (0xFF94 <= codepoint && codepoint <= 0xFF96) {
+ // ya, yu, yo
+ return 0x3084 + (codepoint - 0xFF94) * 2;
+ } else if (0xFF97 <= codepoint && codepoint <= 0xFF9B) {
+ // ra, ri, ru, re, ro
+ return 0x3089 + (codepoint - 0xFF97);
+ }
+ // Note: 0xFF9C, 0xFF9D are handled above
+ } // end of default
+ }
+
+ return codepoint;
+}
+
+// Assuming input is hiragana, convert the hiragana to "normalized" hiragana.
+static int GetNormalizedHiragana(int codepoint) {
+ if (codepoint < 0x3040 || 0x309F < codepoint) {
+ return codepoint;
+ }
+
+ // TODO: should care (semi-)voiced mark (0x3099, 0x309A).
+
+ // Trivial kana conversions.
+ // e.g. xa => a
+ switch (codepoint) {
+ case 0x3041:
+ case 0x3043:
+ case 0x3045:
+ case 0x3047:
+ case 0x3049:
+ case 0x308E: // xwa
+ return codepoint + 1;
+ case 0x3095: // xka
+ return 0x304B;
+ case 0x3096: // xku
+ return 0x304F;
+ default:
+ return codepoint;
+ }
+}
+
+static int GetNormalizedKana(int codepoint,
+ int next_codepoint,
+ bool *next_is_consumed) {
+ // First, convert fullwidth katakana and halfwidth katakana to hiragana.
+ if (0x30A1 <= codepoint && codepoint <= 0x30F6) {
+ // Make fullwidth katakana same as hiragana.
+ // 96 == 0x30A1 - 0x3041c
+ codepoint = codepoint - 96;
+ } else {
+ codepoint = GetHiraganaFromHalfwidthKatakana(
+ codepoint, next_codepoint, next_is_consumed);
+ }
+
+ // Normalize Hiragana.
+ return GetNormalizedHiragana(codepoint);
+}
+
int GetPhoneticallySortableCodePoint(int codepoint,
int next_codepoint,
bool *next_is_consumed) {
@@ -149,144 +299,39 @@
// Below is Kana-related handling.
- // First, convert fullwidth katakana and halfwidth katakana to hiragana
- if (0x30A1 <= codepoint && codepoint <= 0x30F6) {
- // Make fullwidth katakana same as hiragana.
- // 96 == 0x30A1 - 0x3041c
- codepoint = codepoint - 96;
- } else if (0xFF66 <= codepoint && codepoint <= 0xFF9F) {
- // Make halfwidth katakana same as hiragana
- switch (codepoint) {
- case 0xFF66: // wo
- codepoint = 0x3092;
- break;
- case 0xFF67: // xa
- codepoint = 0x3041;
- break;
- case 0xFF68: // xi
- codepoint = 0x3043;
- break;
- case 0xFF69: // xu
- codepoint = 0x3045;
- break;
- case 0xFF6A: // xe
- codepoint = 0x3047;
- break;
- case 0xFF6B: // xo
- codepoint = 0x3049;
- break;
- case 0xFF6C: // xya
- codepoint = 0x3083;
- break;
- case 0xFF6D: // xyu
- codepoint = 0x3085;
- break;
- case 0xFF6E: // xyo
- codepoint = 0x3087;
- break;
- case 0xFF6F: // xtsu
- codepoint = 0x3063;
- break;
- case 0xFF70: // -
- codepoint = 0x30FC;
- break;
- case 0xFF9C: // wa
- codepoint = 0x308F;
- break;
- case 0xFF9D: // n
- codepoint = 0x3093;
- break;
- default:
- {
- if (0xFF71 <= codepoint && codepoint <= 0xFF75) {
- // a, i, u, e, o
- if (codepoint == 0xFF73 && next_codepoint == 0xFF9E) {
- if (next_is_consumed != NULL) {
- *next_is_consumed = true;
- }
- codepoint = 0x3094; // vu
- } else {
- codepoint = 0x3042 + (codepoint - 0xFF71) * 2;
- }
- } else if (0xFF76 <= codepoint && codepoint <= 0xFF81) {
- // ka - chi
- if (next_codepoint == 0xFF9E) {
- // "dakuten" (voiced mark)
- if (next_is_consumed != NULL) {
- *next_is_consumed = true;
- }
- codepoint = 0x304B + (codepoint - 0xFF76) * 2 + 1;
- } else {
- codepoint = 0x304B + (codepoint - 0xFF76) * 2;
- }
- } else if (0xFF82 <= codepoint && codepoint <= 0xFF84) {
- // tsu, te, to (skip xtsu)
- if (next_codepoint == 0xFF9E) {
- // "dakuten" (voiced mark)
- if (next_is_consumed != NULL) {
- *next_is_consumed = true;
- }
- codepoint = 0x3064 + (codepoint - 0xFF82) * 2 + 1;
- } else {
- codepoint = 0x3064 + (codepoint - 0xFF82) * 2;
- }
- } else if (0xFF85 <= codepoint && codepoint <= 0xFF89) {
- // na, ni, nu, ne, no
- codepoint = 0x306A + (codepoint - 0xFF85);
- } else if (0xFF8A <= codepoint && codepoint <= 0xFF8E) {
- // ha, hi, hu, he, ho
- if (next_codepoint == 0xFF9E) {
- // "dakuten" (voiced mark)
- if (next_is_consumed != NULL) {
- *next_is_consumed = true;
- }
- codepoint = 0x306F + (codepoint - 0xFF8A) * 3 + 1;
- } else if (next_codepoint == 0xFF9F) {
- // "han-dakuten" (half voiced mark)
- if (next_is_consumed != NULL) {
- *next_is_consumed = true;
- }
- codepoint = 0x306F + (codepoint - 0xFF8A) * 3 + 2;
- } else {
- codepoint = 0x306F + (codepoint - 0xFF8A) * 3;
- }
- } else if (0xFF8F <= codepoint && codepoint <= 0xFF93) {
- // ma, mi, mu, me, mo
- codepoint = 0x307E + (codepoint - 0xFF8F);
- } else if (0xFF94 <= codepoint && codepoint <= 0xFF96) {
- // ya, yu, yo
- codepoint = 0x3084 + (codepoint - 0xFF94) * 2;
- } else if (0xFF97 <= codepoint && codepoint <= 0xFF9B) {
- // ra, ri, ru, re, ro
- codepoint = 0x3089 + (codepoint - 0xFF97);
- }
- // Note: 0xFF9C, 0xFF9D are handled above
- } // end of default
- } // end of case
- }
-
- // Trivial kana conversions.
- // e.g. xa => a
- switch (codepoint) {
- case 0x3041:
- case 0x3043:
- case 0x3045:
- case 0x3047:
- case 0x3049:
- case 0x308E: // xwa
- codepoint++;
- break;
- case 0x3095: // xka
- codepoint = 0x304B;
- break;
- case 0x3096: // xku
- codepoint = 0x304F;
- break;
- }
-
- return codepoint;
+ return GetNormalizedKana(codepoint, next_codepoint, next_is_consumed);
}
+int GetNormalizedCodePoint(int codepoint,
+ int next_codepoint,
+ bool *next_is_consumed) {
+ if (next_is_consumed != NULL) {
+ *next_is_consumed = false;
+ }
+
+ if (codepoint <= 0x0020 || codepoint == 0x3000) {
+ // Whitespaces. Keep it as is.
+ return codepoint;
+ } else if ((0x0021 <= codepoint && codepoint <= 0x007E) ||
+ (0xFF01 <= codepoint && codepoint <= 0xFF5E)) {
+ // Ascii and fullwidth ascii. Keep it as is
+ return codepoint;
+ } else if (codepoint == 0x02DC || codepoint == 0x223C) {
+ // tilde
+ return 0xFF5E;
+ } else if (codepoint <= 0x3040 ||
+ (0x3100 <= codepoint && codepoint < 0xFF00) ||
+ codepoint == CODEPOINT_FOR_NULL_STR) {
+ // Keep it as is.
+ return codepoint;
+ }
+
+ // Below is Kana-related handling.
+
+ return GetNormalizedKana(codepoint, next_codepoint, next_is_consumed);
+}
+
+
bool GetUtf8FromCodePoint(int codepoint, char *dst, size_t len, size_t *index) {
if (codepoint < 128) { // 1 << 7
if (*index >= len) {
@@ -349,7 +394,9 @@
return true;
}
-bool GetPhoneticallySortableString(const char *src, char **dst, size_t *len){
+static bool GetExpectedString(
+ const char *src, char **dst, size_t *len,
+ int (*get_codepoint_function)(int, int, bool*)) {
if (dst == NULL || len == NULL) {
return false;
}
@@ -380,9 +427,9 @@
// It is ok even if next_codepoint is negative.
codepoints[codepoint_index] =
- GetPhoneticallySortableCodePoint(codepoint,
- next_codepoint,
- &next_is_consumed);
+ get_codepoint_function(codepoint,
+ next_codepoint,
+ &next_is_consumed);
// dakuten (voiced mark) or han-dakuten (half-voiced mark) existed.
if (next_is_consumed) {
next = tmp_next;
@@ -454,4 +501,12 @@
return true;
}
+bool GetPhoneticallySortableString(const char *src, char **dst, size_t *len) {
+ return GetExpectedString(src, dst, len, GetPhoneticallySortableCodePoint);
+}
+
+bool GetNormalizedString(const char *src, char **dst, size_t *len) {
+ return GetExpectedString(src, dst, len, GetNormalizedCodePoint);
+}
+
} // namespace android