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-rw-r--r--doc/examples/fuzz/fuzz_openexec.go30
-rw-r--r--doc/examples/json/json.go81
-rw-r--r--doc/examples/limit/limit.go113
-rw-r--r--doc/examples/mod_regexp/Makefile27
-rw-r--r--doc/examples/mod_regexp/extension.go43
-rw-r--r--doc/examples/mod_regexp/sqlite3_mod_regexp.c35
6 files changed, 329 insertions, 0 deletions
diff --git a/doc/examples/fuzz/fuzz_openexec.go b/doc/examples/fuzz/fuzz_openexec.go
new file mode 100644
index 0000000..5326044
--- /dev/null
+++ b/doc/examples/fuzz/fuzz_openexec.go
@@ -0,0 +1,30 @@
+package sqlite3_fuzz
+
+import (
+ "bytes"
+ "database/sql"
+ "io/ioutil"
+
+ _ "github.com/mattn/go-sqlite3"
+)
+
+func FuzzOpenExec(data []byte) int {
+ sep := bytes.IndexByte(data, 0)
+ if sep <= 0 {
+ return 0
+ }
+ err := ioutil.WriteFile("/tmp/fuzz.db", data[sep+1:], 0644)
+ if err != nil {
+ return 0
+ }
+ db, err := sql.Open("sqlite3", "/tmp/fuzz.db")
+ if err != nil {
+ return 0
+ }
+ defer db.Close()
+ _, err = db.Exec(string(data[:sep-1]))
+ if err != nil {
+ return 0
+ }
+ return 1
+}
diff --git a/doc/examples/json/json.go b/doc/examples/json/json.go
new file mode 100644
index 0000000..181934b
--- /dev/null
+++ b/doc/examples/json/json.go
@@ -0,0 +1,81 @@
+package main
+
+import (
+ "database/sql"
+ "database/sql/driver"
+ "encoding/json"
+ "fmt"
+ _ "github.com/mattn/go-sqlite3"
+ "log"
+ "os"
+)
+
+type Tag struct {
+ Name string `json:"name"`
+ Country string `json:"country"`
+}
+
+func (t *Tag) Scan(value interface{}) error {
+ return json.Unmarshal([]byte(value.(string)), t)
+}
+
+func (t *Tag) Value() (driver.Value, error) {
+ b, err := json.Marshal(t)
+ return string(b), err
+}
+
+func main() {
+ os.Remove("./foo.db")
+
+ db, err := sql.Open("sqlite3", "./foo.db")
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer db.Close()
+
+ _, err = db.Exec(`create table foo (tag jsonb)`)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ stmt, err := db.Prepare("insert into foo(tag) values(?)")
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer stmt.Close()
+ _, err = stmt.Exec(`{"name": "mattn", "country": "japan"}`)
+ if err != nil {
+ log.Fatal(err)
+ }
+ _, err = stmt.Exec(`{"name": "michael", "country": "usa"}`)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ var country string
+ err = db.QueryRow("select tag->>'country' from foo where tag->>'name' = 'mattn'").Scan(&country)
+ if err != nil {
+ log.Fatal(err)
+ }
+ fmt.Println(country)
+
+ var tag Tag
+ err = db.QueryRow("select tag from foo where tag->>'name' = 'mattn'").Scan(&tag)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ fmt.Println(tag.Name)
+
+ tag.Country = "日本"
+ _, err = db.Exec(`update foo set tag = ? where tag->>'name' == 'mattn'`, &tag)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ err = db.QueryRow("select tag->>'country' from foo where tag->>'name' = 'mattn'").Scan(&country)
+ if err != nil {
+ log.Fatal(err)
+ }
+ fmt.Println(country)
+}
diff --git a/doc/examples/limit/limit.go b/doc/examples/limit/limit.go
new file mode 100644
index 0000000..c1adfe8
--- /dev/null
+++ b/doc/examples/limit/limit.go
@@ -0,0 +1,113 @@
+package main
+
+import (
+ "database/sql"
+ "fmt"
+ "log"
+ "os"
+ "strings"
+
+ "github.com/mattn/go-sqlite3"
+)
+
+func createBulkInsertQuery(n int, start int) (query string, args []any) {
+ values := make([]string, n)
+ args = make([]any, n*2)
+ pos := 0
+ for i := 0; i < n; i++ {
+ values[i] = "(?, ?)"
+ args[pos] = start + i
+ args[pos+1] = fmt.Sprintf("こんにちは世界%03d", i)
+ pos += 2
+ }
+ query = fmt.Sprintf(
+ "insert into foo(id, name) values %s",
+ strings.Join(values, ", "),
+ )
+ return
+}
+
+func bulkInsert(db *sql.DB, query string, args []any) (err error) {
+ stmt, err := db.Prepare(query)
+ if err != nil {
+ return
+ }
+
+ _, err = stmt.Exec(args...)
+ if err != nil {
+ return
+ }
+
+ return
+}
+
+func main() {
+ var sqlite3conn *sqlite3.SQLiteConn
+ sql.Register("sqlite3_with_limit", &sqlite3.SQLiteDriver{
+ ConnectHook: func(conn *sqlite3.SQLiteConn) error {
+ sqlite3conn = conn
+ return nil
+ },
+ })
+
+ os.Remove("./foo.db")
+ db, err := sql.Open("sqlite3_with_limit", "./foo.db")
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer db.Close()
+
+ sqlStmt := `
+ create table foo (id integer not null primary key, name text);
+ delete from foo;
+ `
+ _, err = db.Exec(sqlStmt)
+ if err != nil {
+ log.Printf("%q: %s\n", err, sqlStmt)
+ return
+ }
+
+ if sqlite3conn == nil {
+ log.Fatal("not set sqlite3 connection")
+ }
+
+ limitVariableNumber := sqlite3conn.GetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER)
+ log.Printf("default SQLITE_LIMIT_VARIABLE_NUMBER: %d", limitVariableNumber)
+
+ num := 400
+ query, args := createBulkInsertQuery(num, 0)
+ err = bulkInsert(db, query, args)
+ if err != nil {
+ log.Fatal(err)
+ }
+
+ smallLimitVariableNumber := 100
+ sqlite3conn.SetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER, smallLimitVariableNumber)
+
+ limitVariableNumber = sqlite3conn.GetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER)
+ log.Printf("updated SQLITE_LIMIT_VARIABLE_NUMBER: %d", limitVariableNumber)
+
+ query, args = createBulkInsertQuery(num, num)
+ err = bulkInsert(db, query, args)
+ if err != nil {
+ if err != nil {
+ log.Printf("expect failed since SQLITE_LIMIT_VARIABLE_NUMBER is too small: %v", err)
+ }
+ }
+
+ bigLimitVariableNumber := 999999
+ sqlite3conn.SetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER, bigLimitVariableNumber)
+ limitVariableNumber = sqlite3conn.GetLimit(sqlite3.SQLITE_LIMIT_VARIABLE_NUMBER)
+ log.Printf("set SQLITE_LIMIT_VARIABLE_NUMBER: %d", bigLimitVariableNumber)
+ log.Printf("updated SQLITE_LIMIT_VARIABLE_NUMBER: %d", limitVariableNumber)
+
+ query, args = createBulkInsertQuery(500, num+num)
+ err = bulkInsert(db, query, args)
+ if err != nil {
+ if err != nil {
+ log.Fatal(err)
+ }
+ }
+
+ log.Println("no error if SQLITE_LIMIT_VARIABLE_NUMBER > 999")
+}
diff --git a/doc/examples/mod_regexp/Makefile b/doc/examples/mod_regexp/Makefile
new file mode 100644
index 0000000..1ef69a6
--- /dev/null
+++ b/doc/examples/mod_regexp/Makefile
@@ -0,0 +1,27 @@
+ifeq ($(OS),Windows_NT)
+EXE=extension.exe
+LIB_EXT=dll
+RM=cmd /c del
+LDFLAG=
+else
+EXE=extension
+ifeq ($(shell uname -s),Darwin)
+LIB_EXT=dylib
+else
+LIB_EXT=so
+endif
+RM=rm -f
+LDFLAG=-fPIC
+endif
+LIB=sqlite3_mod_regexp.$(LIB_EXT)
+
+all : $(EXE) $(LIB)
+
+$(EXE) : extension.go
+ go build $<
+
+$(LIB) : sqlite3_mod_regexp.c
+ gcc $(LDFLAG) -shared -o $@ $< -lsqlite3 -lpcre
+
+clean :
+ @-$(RM) $(EXE) $(LIB)
diff --git a/doc/examples/mod_regexp/extension.go b/doc/examples/mod_regexp/extension.go
new file mode 100644
index 0000000..61ceb55
--- /dev/null
+++ b/doc/examples/mod_regexp/extension.go
@@ -0,0 +1,43 @@
+package main
+
+import (
+ "database/sql"
+ "fmt"
+ "github.com/mattn/go-sqlite3"
+ "log"
+)
+
+func main() {
+ sql.Register("sqlite3_with_extensions",
+ &sqlite3.SQLiteDriver{
+ Extensions: []string{
+ "sqlite3_mod_regexp",
+ },
+ })
+
+ db, err := sql.Open("sqlite3_with_extensions", ":memory:")
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer db.Close()
+
+ // Force db to make a new connection in pool
+ // by putting the original in a transaction
+ tx, err := db.Begin()
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer tx.Commit()
+
+ // New connection works (hopefully!)
+ rows, err := db.Query("select 'hello world' where 'hello world' regexp '^hello.*d$'")
+ if err != nil {
+ log.Fatal(err)
+ }
+ defer rows.Close()
+ for rows.Next() {
+ var helloworld string
+ rows.Scan(&helloworld)
+ fmt.Println(helloworld)
+ }
+}
diff --git a/doc/examples/mod_regexp/sqlite3_mod_regexp.c b/doc/examples/mod_regexp/sqlite3_mod_regexp.c
new file mode 100644
index 0000000..d3ad149
--- /dev/null
+++ b/doc/examples/mod_regexp/sqlite3_mod_regexp.c
@@ -0,0 +1,35 @@
+#include <pcre.h>
+#include <string.h>
+#include <stdio.h>
+#include <sqlite3ext.h>
+
+SQLITE_EXTENSION_INIT1
+static void regexp_func(sqlite3_context *context, int argc, sqlite3_value **argv) {
+ if (argc >= 2) {
+ const char *target = (const char *)sqlite3_value_text(argv[1]);
+ const char *pattern = (const char *)sqlite3_value_text(argv[0]);
+ const char* errstr = NULL;
+ int erroff = 0;
+ int vec[500];
+ int n, rc;
+ pcre* re = pcre_compile(pattern, 0, &errstr, &erroff, NULL);
+ if (!re) {
+ sqlite3_result_error(context, errstr, 0);
+ return;
+ }
+ rc = pcre_exec(re, NULL, target, strlen(target), 0, 0, vec, 500);
+ if (rc <= 0) {
+ sqlite3_result_int(context, 0);
+ return;
+ }
+ sqlite3_result_int(context, 1);
+ }
+}
+
+#ifdef _WIN32
+__declspec(dllexport)
+#endif
+int sqlite3_extension_init(sqlite3 *db, char **errmsg, const sqlite3_api_routines *api) {
+ SQLITE_EXTENSION_INIT2(api);
+ return sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8, (void*)db, regexp_func, NULL, NULL);
+}
generated by cgit v1.2.3 (git 2.49.0) at 2025-07-13 19:47:47 +0000