mirror of
https://github.com/go-gitea/gitea
synced 2024-11-05 01:34:25 +00:00
25b5ffb6af
* Enables mssql support Port of dlobs work in gogs. Enables options in index.js Enables MSSQL as a database option in go. Sets ID to 0 on initial migration. Required for MSSQL insert statements. Signed-off-by: Beau Trepp <beautrepp@gmail.com> * Vendors in denisenkom/go-mssqldb Includes golang.org/x/crypto/md4 as this is required by go-msssqldb Signed-off-by: Beau Trepp <beautrepp@gmail.com>
228 lines
3.1 KiB
Go
228 lines
3.1 KiB
Go
package mssql
|
|
|
|
import (
|
|
"bytes"
|
|
"io"
|
|
"strconv"
|
|
)
|
|
|
|
type parser struct {
|
|
r *bytes.Reader
|
|
w bytes.Buffer
|
|
paramCount int
|
|
paramMax int
|
|
}
|
|
|
|
func (p *parser) next() (rune, bool) {
|
|
ch, _, err := p.r.ReadRune()
|
|
if err != nil {
|
|
if err != io.EOF {
|
|
panic(err)
|
|
}
|
|
return 0, false
|
|
}
|
|
return ch, true
|
|
}
|
|
|
|
func (p *parser) unread() {
|
|
err := p.r.UnreadRune()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func (p *parser) write(ch rune) {
|
|
p.w.WriteRune(ch)
|
|
}
|
|
|
|
type stateFunc func(*parser) stateFunc
|
|
|
|
func parseParams(query string) (string, int) {
|
|
p := &parser{
|
|
r: bytes.NewReader([]byte(query)),
|
|
}
|
|
state := parseNormal
|
|
for state != nil {
|
|
state = state(p)
|
|
}
|
|
return p.w.String(), p.paramMax
|
|
}
|
|
|
|
func parseNormal(p *parser) stateFunc {
|
|
for {
|
|
ch, ok := p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
if ch == '?' {
|
|
return parseParameter
|
|
} else if ch == '$' || ch == ':' {
|
|
ch2, ok := p.next()
|
|
if !ok {
|
|
p.write(ch)
|
|
return nil
|
|
}
|
|
p.unread()
|
|
if ch2 >= '0' && ch2 <= '9' {
|
|
return parseParameter
|
|
}
|
|
}
|
|
p.write(ch)
|
|
switch ch {
|
|
case '\'':
|
|
return parseQuote
|
|
case '"':
|
|
return parseDoubleQuote
|
|
case '[':
|
|
return parseBracket
|
|
case '-':
|
|
return parseLineComment
|
|
case '/':
|
|
return parseComment
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseParameter(p *parser) stateFunc {
|
|
var paramN int
|
|
var ok bool
|
|
for {
|
|
var ch rune
|
|
ch, ok = p.next()
|
|
if ok && ch >= '0' && ch <= '9' {
|
|
paramN = paramN*10 + int(ch-'0')
|
|
} else {
|
|
break
|
|
}
|
|
}
|
|
if ok {
|
|
p.unread()
|
|
}
|
|
if paramN == 0 {
|
|
p.paramCount++
|
|
paramN = p.paramCount
|
|
}
|
|
if paramN > p.paramMax {
|
|
p.paramMax = paramN
|
|
}
|
|
p.w.WriteString("@p")
|
|
p.w.WriteString(strconv.Itoa(paramN))
|
|
if !ok {
|
|
return nil
|
|
}
|
|
return parseNormal
|
|
}
|
|
|
|
func parseQuote(p *parser) stateFunc {
|
|
for {
|
|
ch, ok := p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
if ch == '\'' {
|
|
return parseNormal
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseDoubleQuote(p *parser) stateFunc {
|
|
for {
|
|
ch, ok := p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
if ch == '"' {
|
|
return parseNormal
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseBracket(p *parser) stateFunc {
|
|
for {
|
|
ch, ok := p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
if ch == ']' {
|
|
ch, ok = p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
if ch != ']' {
|
|
p.unread()
|
|
return parseNormal
|
|
}
|
|
p.write(ch)
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseLineComment(p *parser) stateFunc {
|
|
ch, ok := p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
if ch != '-' {
|
|
p.unread()
|
|
return parseNormal
|
|
}
|
|
p.write(ch)
|
|
for {
|
|
ch, ok = p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
if ch == '\n' {
|
|
return parseNormal
|
|
}
|
|
}
|
|
}
|
|
|
|
func parseComment(p *parser) stateFunc {
|
|
var nested int
|
|
ch, ok := p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
if ch != '*' {
|
|
p.unread()
|
|
return parseNormal
|
|
}
|
|
p.write(ch)
|
|
for {
|
|
ch, ok = p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
for ch == '*' {
|
|
ch, ok = p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
if ch == '/' {
|
|
if nested == 0 {
|
|
return parseNormal
|
|
} else {
|
|
nested--
|
|
}
|
|
}
|
|
}
|
|
for ch == '/' {
|
|
ch, ok = p.next()
|
|
if !ok {
|
|
return nil
|
|
}
|
|
p.write(ch)
|
|
if ch == '*' {
|
|
nested++
|
|
}
|
|
}
|
|
}
|
|
}
|