fix: parse multiple statements with embedded semicolon

Sqlparser is not maintaned anymore, as it was used just for this simple
thing I've decided to reimplement logic of spliting statements into one
simple function.

Fixes: #50

Author: piotrkira

go.mod

@@ -70,5 +70,5 @@ require (
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	github.com/xwb1989/sqlparser v0.0.0-20180606152119-120387863bf2
+	github.com/xwb1989/sqlparser v0.0.0-20180606152119-120387863bf2 // indirect
 )

go.sum

@@ -82,8 +82,6 @@ github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/leodido/go-urn v1.2.0/go.mod h1:+8+nEpDfqqsY+g338gtMEUOtuK+4dEMhiQEgxpxOKII=
 github.com/leodido/go-urn v1.2.2 h1:7z68G0FCGvDk646jz1AelTYNYWrTNm0bEcFAo147wt4=
 github.com/leodido/go-urn v1.2.2/go.mod h1:kUaIbLZWttglzwNuG0pgsh5vuV6u2YcGBYz1hIPjtOQ=
-github.com/libsql/libsql-client-go v0.0.0-20230417135653-4b3a4f626bc0 h1:k7m1LHwZfTC3jV8hwC9GhgEUFWx2LsTtODN8DNvpROQ=
-github.com/libsql/libsql-client-go v0.0.0-20230417135653-4b3a4f626bc0/go.mod h1:w1KCoxf6c2eACi0Rpape7cIooejVqeqYiVr1E/tGcLk=
 github.com/libsql/libsql-client-go v0.0.0-20230425122822-72eff623c460 h1:dG1TyWCzFX2KiL6MSyqfzt0XjJq5BP5x4ZD8sY2xahE=
 github.com/libsql/libsql-client-go v0.0.0-20230425122822-72eff623c460/go.mod h1:w1KCoxf6c2eACi0Rpape7cIooejVqeqYiVr1E/tGcLk=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=

internal/db/db.go

@@ -8,7 +8,6 @@ import (
 
 	_ "github.com/libsql/libsql-client-go/libsql"
 	_ "github.com/mattn/go-sqlite3"
-	"github.com/xwb1989/sqlparser"
 
 	"github.com/libsql/libsql-shell-go/pkg/shell/enums"
 	"github.com/libsql/libsql-shell-go/pkg/shell/shellerrors"
@@ -61,9 +60,31 @@ func (db *Db) Close() {
 	db.sqlDb.Close()
 }
 
+func splitStatementToPieces(statementsString string) (pieces []string, err error) {
+  pieces = make([]string, 0, 16)
+  embedded := map[rune]bool{'\'': false, '"': false}
+	stmtBegin := 0
+  var stmt string
+  for i, char := range statementsString {
+    if status, present := embedded[char]; present {
+      embedded[char] = !status
+    }
+    if embedded['\''] || embedded['"'] || char != ';' {
+      continue
+    }
+    stmt = statementsString[stmtBegin : i]
+    pieces = append(pieces, stmt)
+    stmtBegin = i+1
+  }
+  if stmtBegin < len(statementsString) {
+    pieces = append(pieces, statementsString[stmtBegin :])
+  }
+  return pieces, nil
+}
+
 func (db *Db) ExecuteStatements(statementsString string) (StatementsResult, error) {
 
-	statements, err := sqlparser.SplitStatementToPieces(statementsString)
+	statements, err := splitStatementToPieces(statementsString)
 	if err != nil {
 		return StatementsResult{}, err
 	}