libtracker-data: Implement fn:upper-case/UCASE

UCASE() was implemented over a nonexisting function, fix that. Impls
for both libunistring and libicu have been added.

2 files changed, 76 insertions, 0 deletions

diff --git a/src/libtracker-data/tracker-db-interface-sqlite.c b/src/libtracker-data/tracker-db-interface-sqlite.c
index 0b0bb9921..6fdc3bbce 100644
--- a/src/libtracker-data/tracker-db-interface-sqlite.c
+++ b/src/libtracker-data/tracker-db-interface-sqlite.c
@@ -779,6 +779,31 @@ function_sparql_lower_case (sqlite3_context *context,
 }
 
 static void
+function_sparql_upper_case (sqlite3_context *context,
+                            int              argc,
+                            sqlite3_value   *argv[])
+{
+	const uint16_t *zInput;
+	uint16_t *zOutput;
+	size_t written = 0;
+	int nInput;
+
+	g_assert (argc == 1);
+
+	zInput = sqlite3_value_text16 (argv[0]);
+
+	if (!zInput) {
+		return;
+	}
+
+	nInput = sqlite3_value_bytes16 (argv[0]);
+
+	zOutput = u16_toupper (zInput, nInput / 2, NULL, NULL, NULL, &written);
+
+	sqlite3_result_text16 (context, zOutput, written * 2, free);
+}
+
+static void
 function_sparql_case_fold (sqlite3_context *context,
                            int              argc,
                            sqlite3_value   *argv[])
@@ -920,6 +945,48 @@ function_sparql_lower_case (sqlite3_context *context,
 }
 
 static void
+function_sparql_upper_case (sqlite3_context *context,
+                            int              argc,
+                            sqlite3_value   *argv[])
+{
+	const UChar *zInput;
+	UChar *zOutput;
+	int nInput;
+	int nOutput;
+	UErrorCode status = U_ZERO_ERROR;
+
+	g_assert (argc == 1);
+
+	zInput = sqlite3_value_text16 (argv[0]);
+
+	if (!zInput) {
+		return;
+	}
+
+	nInput = sqlite3_value_bytes16 (argv[0]);
+
+	nOutput = nInput * 2 + 2;
+	zOutput = sqlite3_malloc (nOutput);
+
+	if (!zOutput) {
+		return;
+	}
+
+	u_strToUpper (zOutput, nOutput / 2, zInput, nInput / 2, NULL, &status);
+
+	if (!U_SUCCESS (status)){
+		char zBuf[128];
+		sqlite3_snprintf (128, zBuf, "ICU error: u_strToUpper(): %s", u_errorName (status));
+		zBuf[127] = '\0';
+		sqlite3_free (zOutput);
+		sqlite3_result_error (context, zBuf, -1);
+		return;
+	}
+
+	sqlite3_result_text16 (context, zOutput, -1, sqlite3_free);
+}
+
+static void
 function_sparql_case_fold (sqlite3_context *context,
                            int              argc,
                            sqlite3_value   *argv[])
@@ -1362,6 +1429,10 @@ open_database (TrackerDBInterface  *db_interface,
 	                         SQLITE_ANY | SQLITE_DETERMINISTIC,
 	                         db_interface, &function_sparql_lower_case,
 	                         NULL, NULL);
+	sqlite3_create_function (db_interface->db, "SparqlUpperCase", 1,
+	                         SQLITE_ANY | SQLITE_DETERMINISTIC,
+	                         db_interface, &function_sparql_upper_case,
+	                         NULL, NULL);
 
 	sqlite3_create_function (db_interface->db, "SparqlCaseFold", 1,
 	                         SQLITE_ANY | SQLITE_DETERMINISTIC,
diff --git a/src/libtracker-data/tracker-sparql-expression.vala b/src/libtracker-data/tracker-sparql-expression.vala
index aca536d9d..96270cfc5 100644
--- a/src/libtracker-data/tracker-sparql-expression.vala
+++ b/src/libtracker-data/tracker-sparql-expression.vala
@@ -532,6 +532,11 @@ class Tracker.Sparql.Expression : Object {
 			translate_expression_as_string (sql);
 			sql.append (")");
 			return PropertyType.STRING;
+		} else if (uri == FN_NS + "upper-case") {
+			sql.append ("SparqlUpperCase (");
+			translate_expression_as_string (sql);
+			sql.append (")");
+			return PropertyType.STRING;
 		} else if (uri == TRACKER_NS + "normalize") {
 			// conversion to string
 			sql.append ("SparqlNormalize (");