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fix: fill columnType struct by adding ColumnTypes() in the GORM sqlci…
…pher Migrator Signed-off-by: D4ryl00 <d4ryl00@gmail.com>
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//nolint // file imported from go-gorm sqlite driver | ||
package sqlite | ||
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import ( | ||
"database/sql" | ||
"errors" | ||
"fmt" | ||
"regexp" | ||
"strconv" | ||
"strings" | ||
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"gorm.io/gorm/migrator" | ||
) | ||
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var ( | ||
sqliteSeparator = "`|\"|'|\t" | ||
indexRegexp = regexp.MustCompile(fmt.Sprintf(`(?is)CREATE(?: UNIQUE)? INDEX [%v]?[\w\d-]+[%v]? ON (.*)$`, sqliteSeparator, sqliteSeparator)) | ||
tableRegexp = regexp.MustCompile(fmt.Sprintf(`(?is)(CREATE TABLE [%v]?[\w\d-]+[%v]?)(?:\s*\((.*)\))?`, sqliteSeparator, sqliteSeparator)) | ||
separatorRegexp = regexp.MustCompile(fmt.Sprintf("[%v]", sqliteSeparator)) | ||
columnsRegexp = regexp.MustCompile(fmt.Sprintf(`[(,][%v]?(\w+)[%v]?`, sqliteSeparator, sqliteSeparator)) | ||
columnRegexp = regexp.MustCompile(fmt.Sprintf(`^[%v]?([\w\d]+)[%v]?\s+([\w\(\)\d]+)(.*)$`, sqliteSeparator, sqliteSeparator)) | ||
defaultValueRegexp = regexp.MustCompile(`(?i) DEFAULT \(?(.+)?\)?( |COLLATE|GENERATED|$)`) | ||
regRealDataType = regexp.MustCompile(`[^\d](\d+)[^\d]?`) | ||
) | ||
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func getAllColumns(s string) []string { | ||
allMatches := columnsRegexp.FindAllStringSubmatch(s, -1) | ||
columns := make([]string, 0, len(allMatches)) | ||
for _, matches := range allMatches { | ||
if len(matches) > 1 { | ||
columns = append(columns, matches[1]) | ||
} | ||
} | ||
return columns | ||
} | ||
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type ddl struct { | ||
head string | ||
fields []string | ||
columns []migrator.ColumnType | ||
} | ||
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func parseDDL(strs ...string) (*ddl, error) { | ||
var result ddl | ||
for _, str := range strs { | ||
if sections := tableRegexp.FindStringSubmatch(str); len(sections) > 0 { | ||
var ( | ||
ddlBody = sections[2] | ||
ddlBodyRunes = []rune(ddlBody) | ||
bracketLevel int | ||
quote rune | ||
buf string | ||
) | ||
ddlBodyRunesLen := len(ddlBodyRunes) | ||
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result.head = sections[1] | ||
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for idx := 0; idx < ddlBodyRunesLen; idx++ { | ||
var ( | ||
next rune = 0 | ||
c = ddlBodyRunes[idx] | ||
) | ||
if idx+1 < ddlBodyRunesLen { | ||
next = ddlBodyRunes[idx+1] | ||
} | ||
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if sc := string(c); separatorRegexp.MatchString(sc) { | ||
if c == next { | ||
buf += sc // Skip escaped quote | ||
idx++ | ||
} else if quote > 0 { | ||
quote = 0 | ||
} else { | ||
quote = c | ||
} | ||
} else if quote == 0 { | ||
if c == '(' { | ||
bracketLevel++ | ||
} else if c == ')' { | ||
bracketLevel-- | ||
} else if bracketLevel == 0 { | ||
if c == ',' { | ||
result.fields = append(result.fields, strings.TrimSpace(buf)) | ||
buf = "" | ||
continue | ||
} | ||
} | ||
} | ||
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if bracketLevel < 0 { | ||
return nil, errors.New("invalid DDL, unbalanced brackets") | ||
} | ||
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buf += string(c) | ||
} | ||
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if bracketLevel != 0 { | ||
return nil, errors.New("invalid DDL, unbalanced brackets") | ||
} | ||
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if buf != "" { | ||
result.fields = append(result.fields, strings.TrimSpace(buf)) | ||
} | ||
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for _, f := range result.fields { | ||
fUpper := strings.ToUpper(f) | ||
if strings.HasPrefix(fUpper, "CHECK") || | ||
strings.HasPrefix(fUpper, "CONSTRAINT") { | ||
continue | ||
} | ||
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if strings.HasPrefix(fUpper, "PRIMARY KEY") { | ||
for _, name := range getAllColumns(f) { | ||
for idx, column := range result.columns { | ||
if column.NameValue.String == name { | ||
column.PrimaryKeyValue = sql.NullBool{Bool: true, Valid: true} | ||
result.columns[idx] = column | ||
break | ||
} | ||
} | ||
} | ||
} else if matches := columnRegexp.FindStringSubmatch(f); len(matches) > 0 { | ||
columnType := migrator.ColumnType{ | ||
NameValue: sql.NullString{String: matches[1], Valid: true}, | ||
DataTypeValue: sql.NullString{String: matches[2], Valid: true}, | ||
ColumnTypeValue: sql.NullString{String: matches[2], Valid: true}, | ||
PrimaryKeyValue: sql.NullBool{Valid: true}, | ||
UniqueValue: sql.NullBool{Valid: true}, | ||
NullableValue: sql.NullBool{Valid: true}, | ||
DefaultValueValue: sql.NullString{Valid: false}, | ||
} | ||
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matchUpper := strings.ToUpper(matches[3]) | ||
if strings.Contains(matchUpper, " NOT NULL") { | ||
columnType.NullableValue = sql.NullBool{Bool: false, Valid: true} | ||
} else if strings.Contains(matchUpper, " NULL") { | ||
columnType.NullableValue = sql.NullBool{Bool: true, Valid: true} | ||
} | ||
if strings.Contains(matchUpper, " UNIQUE") { | ||
columnType.UniqueValue = sql.NullBool{Bool: true, Valid: true} | ||
} | ||
if strings.Contains(matchUpper, " PRIMARY") { | ||
columnType.PrimaryKeyValue = sql.NullBool{Bool: true, Valid: true} | ||
} | ||
if defaultMatches := defaultValueRegexp.FindStringSubmatch(matches[3]); len(defaultMatches) > 1 { | ||
if strings.ToLower(defaultMatches[1]) != "null" { | ||
columnType.DefaultValueValue = sql.NullString{String: strings.Trim(defaultMatches[1], `"`), Valid: true} | ||
} | ||
} | ||
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// data type length | ||
matches := regRealDataType.FindAllStringSubmatch(columnType.DataTypeValue.String, -1) | ||
if len(matches) == 1 && len(matches[0]) == 2 { | ||
size, _ := strconv.Atoi(matches[0][1]) | ||
columnType.LengthValue = sql.NullInt64{Valid: true, Int64: int64(size)} | ||
columnType.DataTypeValue.String = strings.TrimSuffix(columnType.DataTypeValue.String, matches[0][0]) | ||
} | ||
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result.columns = append(result.columns, columnType) | ||
} | ||
} | ||
} else if matches := indexRegexp.FindStringSubmatch(str); len(matches) > 0 { | ||
for _, column := range getAllColumns(matches[1]) { | ||
for idx, c := range result.columns { | ||
if c.NameValue.String == column { | ||
c.UniqueValue = sql.NullBool{Bool: strings.ToUpper(strings.Fields(str)[1]) == "UNIQUE", Valid: true} | ||
result.columns[idx] = c | ||
} | ||
} | ||
} | ||
} else { | ||
return nil, errors.New("invalid DDL") | ||
} | ||
} | ||
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return &result, nil | ||
} | ||
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func (d *ddl) compile() string { | ||
if len(d.fields) == 0 { | ||
return d.head | ||
} | ||
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return fmt.Sprintf("%s (%s)", d.head, strings.Join(d.fields, ",")) | ||
} | ||
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func (d *ddl) addConstraint(name string, sql string) { | ||
reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]") | ||
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for i := 0; i < len(d.fields); i++ { | ||
if reg.MatchString(d.fields[i]) { | ||
d.fields[i] = sql | ||
return | ||
} | ||
} | ||
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d.fields = append(d.fields, sql) | ||
} | ||
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func (d *ddl) removeConstraint(name string) bool { | ||
reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]") | ||
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for i := 0; i < len(d.fields); i++ { | ||
if reg.MatchString(d.fields[i]) { | ||
d.fields = append(d.fields[:i], d.fields[i+1:]...) | ||
return true | ||
} | ||
} | ||
return false | ||
} | ||
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func (d *ddl) hasConstraint(name string) bool { | ||
reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]") | ||
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for _, f := range d.fields { | ||
if reg.MatchString(f) { | ||
return true | ||
} | ||
} | ||
return false | ||
} | ||
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func (d *ddl) getColumns() []string { | ||
res := []string{} | ||
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for _, f := range d.fields { | ||
fUpper := strings.ToUpper(f) | ||
if strings.HasPrefix(fUpper, "PRIMARY KEY") || | ||
strings.HasPrefix(fUpper, "CHECK") || | ||
strings.HasPrefix(fUpper, "CONSTRAINT") || | ||
strings.Contains(fUpper, "GENERATED ALWAYS AS") { | ||
continue | ||
} | ||
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reg := regexp.MustCompile("^[\"`']?([\\w\\d]+)[\"`']?") | ||
match := reg.FindStringSubmatch(f) | ||
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if match != nil { | ||
res = append(res, "`"+match[1]+"`") | ||
} | ||
} | ||
return res | ||
} |
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