Increase various limits, fix #45.

const.go

@@ -9,7 +9,7 @@ const (
 
 	_UTF8 = 1
 
-	_MAX_NAME            = 512 // Used for short strings: names, error messages…
+	_MAX_NAME            = 1e6 // Self-imposed limit for most NUL terminated strings.
 	_MAX_LENGTH          = 1e9
 	_MAX_SQL_LENGTH      = 1e9
 	_MAX_ALLOCATION_SIZE = 0x7ffffeff

sqlite.go

@@ -126,7 +126,7 @@ func (sqlt *sqlite) error(rc uint64, handle uint32, sql ...string) error {
 
 	if handle != 0 {
 		if r := sqlt.call("sqlite3_errmsg", uint64(handle)); r != 0 {
-			err.msg = util.ReadString(sqlt.mod, uint32(r), _MAX_NAME)
+			err.msg = util.ReadString(sqlt.mod, uint32(r), _MAX_LENGTH)
 		}
 
 		if sql != nil {

sqlite3/vfs.c

@@ -67,7 +67,7 @@ int sqlite3_os_init() {
   static sqlite3_vfs os_vfs = {
       .iVersion = 2,
       .szOsFile = sizeof(struct go_file),
-      .mxPathname = 512,
+      .mxPathname = 1024,
       .zName = "os",
 
       .xOpen = go_open_wrapper,
@@ -113,7 +113,7 @@ sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName) {
     *go_vfs_list = (sqlite3_vfs){
         .iVersion = 2,
         .szOsFile = sizeof(struct go_file),
-        .mxPathname = 512,
+        .mxPathname = 1024,
         .zName = name,
         .pNext = head,
 

vfs/const.go

@@ -3,8 +3,8 @@ package vfs
 import "github.com/ncruces/go-sqlite3/internal/util"
 
 const (
-	_MAX_NAME            = 512 // Used for short strings: names, error messages…
-	_MAX_PATHNAME        = 512
+	_MAX_NAME            = 1e6 // Self-imposed limit for most NUL terminated strings.
+	_MAX_PATHNAME        = 1024
 	_DEFAULT_SECTOR_SIZE = 4096
 )
 

vtab.go

@@ -523,7 +523,7 @@ func cursorFilterCallback(ctx context.Context, mod api.Module, pCur, idxNum, idx
 	args := callbackArgs(db, argc, argv)
 	var idxName string
 	if idxStr != 0 {
-		idxName = util.ReadString(mod, idxStr, _MAX_NAME)
+		idxName = util.ReadString(mod, idxStr, _MAX_LENGTH)
 	}
 	err := cursor.Filter(int(idxNum), idxName, args...)
 	return vtabError(ctx, mod, pCur, _CURSOR_ERROR, err)