Alexander's patch #1:

This patch makes a step towards using a system-wide sqlite3 lib. It
moves sqlite3util.cpp/.h to CommonLibs and leaves only original
sqlite3 files in the sqlite3 dir of OpenBTS.

I do not claim any copyright over this change, as it's very basic.
Looking forward to see it merged into mainline.

git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@4467 19bc5d8c-e614-43d4-8b26-e1612bc8e597

CommonLibs/Makefile.am

@@ -33,7 +33,8 @@ libcommon_la_SOURCES = \
 	Timeval.cpp \
 	Logger.cpp \
 	URLEncode.cpp \
-	Configuration.cpp
+	Configuration.cpp \
+	sqlite3util.cpp
 
 noinst_PROGRAMS = \
 	BitVectorTest \
@@ -58,7 +59,8 @@ noinst_HEADERS = \
 	URLEncode.h \
 	Configuration.h \
 	F16.h \
-	Logger.h
+	Logger.h \
+	sqlite3util.h
 
 BitVectorTest_SOURCES = BitVectorTest.cpp
 BitVectorTest_LDADD = libcommon.la

CommonLibs/sqlite3util.cpp

@@ -0,0 +1,147 @@
+/*
+* Written by David A. Burgess, Kestrel Signal Processing, Inc., 2010
+* The author disclaims copyright to this source code.
+*/
+
+
+#include "sqlite3.h"
+#include "sqlite3util.h"
+
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+
+
+// Wrappers to sqlite operations.
+// These will eventually get moved to commonlibs.
+
+int sqlite3_prepare_statement(sqlite3* DB, sqlite3_stmt **stmt, const char* query)
+{
+	int prc = sqlite3_prepare_v2(DB,query,strlen(query),stmt,NULL);
+	if (prc) {
+		fprintf(stderr,"sqlite3_prepare_v2 failed for \"%s\": %s\n",query,sqlite3_errmsg(DB));
+		sqlite3_finalize(*stmt);
+	}
+	return prc;
+}
+
+int sqlite3_run_query(sqlite3* DB, sqlite3_stmt *stmt)
+{
+	int src = SQLITE_BUSY;
+	while (src==SQLITE_BUSY) {
+		src = sqlite3_step(stmt);
+		if (src==SQLITE_BUSY) {
+			usleep(100000);
+		}
+	}
+	if ((src!=SQLITE_DONE) && (src!=SQLITE_ROW)) {
+		fprintf(stderr,"sqlite3_run_query failed: %s: %s\n", sqlite3_sql(stmt), sqlite3_errmsg(DB));
+	}
+	return src;
+}
+
+
+bool sqlite3_exists(sqlite3* DB, const char *tableName,
+		const char* keyName, const char* keyData)
+{
+	size_t stringSize = 100 + strlen(tableName) + strlen(keyName) + strlen(keyData);
+	char query[stringSize];
+	sprintf(query,"SELECT * FROM %s WHERE %s == \"%s\"",tableName,keyName,keyData);
+	// Prepare the statement.
+	sqlite3_stmt *stmt;
+	if (sqlite3_prepare_statement(DB,&stmt,query)) return false;
+	// Read the result.
+	int src = sqlite3_run_query(DB,stmt);
+	sqlite3_finalize(stmt);
+	// Anything there?
+	return (src == SQLITE_ROW);
+}
+
+
+
+bool sqlite3_single_lookup(sqlite3* DB, const char *tableName,
+		const char* keyName, const char* keyData,
+		const char* valueName, unsigned &valueData)
+{
+	size_t stringSize = 100 + strlen(valueName) + strlen(tableName) + strlen(keyName) + strlen(keyData);
+	char query[stringSize];
+	sprintf(query,"SELECT %s FROM %s WHERE %s == \"%s\"",valueName,tableName,keyName,keyData);
+	// Prepare the statement.
+	sqlite3_stmt *stmt;
+	if (sqlite3_prepare_statement(DB,&stmt,query)) return false;
+	// Read the result.
+	int src = sqlite3_run_query(DB,stmt);
+	bool retVal = false;
+	if (src == SQLITE_ROW) {
+		valueData = (unsigned)sqlite3_column_int64(stmt,0);
+		retVal = true;
+	}
+	sqlite3_finalize(stmt);
+	return retVal;
+}
+
+
+// This function returns an allocated string that must be free'd by the caller.
+bool sqlite3_single_lookup(sqlite3* DB, const char* tableName,
+		const char* keyName, const char* keyData,
+		const char* valueName, char* &valueData)
+{
+	valueData=NULL;
+	size_t stringSize = 100 + strlen(valueName) + strlen(tableName) + strlen(keyName) + strlen(keyData);
+	char query[stringSize];
+	sprintf(query,"SELECT %s FROM %s WHERE %s == \"%s\"",valueName,tableName,keyName,keyData);
+	// Prepare the statement.
+	sqlite3_stmt *stmt;
+	if (sqlite3_prepare_statement(DB,&stmt,query)) return false;
+	// Read the result.
+	int src = sqlite3_run_query(DB,stmt);
+	bool retVal = false;
+	if (src == SQLITE_ROW) {
+		const char* ptr = (const char*)sqlite3_column_text(stmt,0);
+		if (ptr) valueData = strdup(ptr);
+		retVal = true;
+	}
+	sqlite3_finalize(stmt);
+	return retVal;
+}
+
+
+// This function returns an allocated string that must be free'd by tha caller.
+bool sqlite3_single_lookup(sqlite3* DB, const char* tableName,
+		const char* keyName, unsigned keyData,
+		const char* valueName, char* &valueData)
+{
+	valueData=NULL;
+	size_t stringSize = 100 + strlen(valueName) + strlen(tableName) + strlen(keyName) + 20;
+	char query[stringSize];
+	sprintf(query,"SELECT %s FROM %s WHERE %s == %u",valueName,tableName,keyName,keyData);
+	// Prepare the statement.
+	sqlite3_stmt *stmt;
+	if (sqlite3_prepare_statement(DB,&stmt,query)) return false;
+	// Read the result.
+	int src = sqlite3_run_query(DB,stmt);
+	bool retVal = false;
+	if (src == SQLITE_ROW) {
+		const char* ptr = (const char*)sqlite3_column_text(stmt,0);
+		if (ptr) valueData = strdup(ptr);
+		retVal = true;
+	}
+	sqlite3_finalize(stmt);
+	return retVal;
+}
+
+
+
+
+bool sqlite3_command(sqlite3* DB, const char* query)
+{
+	// Prepare the statement.
+	sqlite3_stmt *stmt;
+	if (sqlite3_prepare_statement(DB,&stmt,query)) return false;
+	// Run the query.
+	int src = sqlite3_run_query(DB,stmt);
+	return src==SQLITE_DONE;
+}
+
+
+

CommonLibs/sqlite3util.h

@@ -0,0 +1,29 @@
+#ifndef SQLITE3UTIL_H
+#define SQLITE3UTIL_H
+
+#include <sqlite3.h>
+
+int sqlite3_prepare_statement(sqlite3* DB, sqlite3_stmt **stmt, const char* query);
+
+int sqlite3_run_query(sqlite3* DB, sqlite3_stmt *stmt);
+
+bool sqlite3_single_lookup(sqlite3* DB, const char *tableName,
+		const char* keyName, const char* keyData,
+		const char* valueName, unsigned &valueData);
+
+bool sqlite3_single_lookup(sqlite3* DB, const char* tableName,
+		const char* keyName, const char* keyData,
+		const char* valueName, char* &valueData);
+
+// This function returns an allocated string that must be free'd by the caller.
+bool sqlite3_single_lookup(sqlite3* DB, const char* tableName,
+		const char* keyName, unsigned keyData,
+		const char* valueName, char* &valueData);
+
+bool sqlite3_exists(sqlite3* DB, const char* tableName,
+		const char* keyName, const char* keyData);
+
+/** Run a query, ignoring the result; return true on success. */
+bool sqlite3_command(sqlite3* DB, const char* query);
+
+#endif