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g_appcode.go
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g_appcode.go
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// Copyright 2013 bee authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
package main
import (
"database/sql"
"fmt"
"os"
"os/exec"
"path"
"path/filepath"
"regexp"
"strings"
_ "github.com/go-sql-driver/mysql"
_ "github.com/lib/pq"
)
const (
OModel byte = 1 << iota
OController
ORouter
)
// DbTransformer has method to reverse engineer a database schema to restful api code
type DbTransformer interface {
GetTableNames(conn *sql.DB) []string
GetConstraints(conn *sql.DB, table *Table, blackList map[string]bool)
GetColumns(conn *sql.DB, table *Table, blackList map[string]bool)
GetGoDataType(sqlType string) string
}
// MysqlDB is the MySQL version of DbTransformer
type MysqlDB struct {
}
// PostgresDB is the PostgreSQL version of DbTransformer
type PostgresDB struct {
}
// dbDriver maps a DBMS name to its version of DbTransformer
var dbDriver = map[string]DbTransformer{
"mysql": &MysqlDB{},
"postgres": &PostgresDB{},
}
type MvcPath struct {
ModelPath string
ControllerPath string
RouterPath string
}
// typeMapping maps SQL data type to corresponding Go data type
var typeMappingMysql = map[string]string{
"int": "int", // int signed
"integer": "int",
"tinyint": "int8",
"smallint": "int16",
"mediumint": "int32",
"bigint": "int64",
"int unsigned": "uint", // int unsigned
"integer unsigned": "uint",
"tinyint unsigned": "uint8",
"smallint unsigned": "uint16",
"mediumint unsigned": "uint32",
"bigint unsigned": "uint64",
"bit": "uint64",
"bool": "bool", // boolean
"enum": "string", // enum
"set": "string", // set
"varchar": "string", // string & text
"char": "string",
"tinytext": "string",
"mediumtext": "string",
"text": "string",
"longtext": "string",
"blob": "string", // blob
"tinyblob": "string",
"mediumblob": "string",
"longblob": "string",
"date": "time.Time", // time
"datetime": "time.Time",
"timestamp": "time.Time",
"time": "time.Time",
"float": "float32", // float & decimal
"double": "float64",
"decimal": "float64",
"binary": "string", // binary
"varbinary": "string",
}
// typeMappingPostgres maps SQL data type to corresponding Go data type
var typeMappingPostgres = map[string]string{
"serial": "int", // serial
"big serial": "int64",
"smallint": "int16", // int
"integer": "int",
"bigint": "int64",
"boolean": "bool", // bool
"char": "string", // string
"character": "string",
"character varying": "string",
"varchar": "string",
"text": "string",
"date": "time.Time", // time
"time": "time.Time",
"timestamp": "time.Time",
"timestamp without time zone": "time.Time",
"timestamp with time zone": "time.Time",
"interval": "string", // time interval, string for now
"real": "float32", // float & decimal
"double precision": "float64",
"decimal": "float64",
"numeric": "float64",
"money": "float64", // money
"bytea": "string", // binary
"tsvector": "string", // fulltext
"ARRAY": "string", // array
"USER-DEFINED": "string", // user defined
"uuid": "string", // uuid
"json": "string", // json
"jsonb": "string",
}
// Table represent a table in a database
type Table struct {
Name string
Pk string
Uk []string
Fk map[string]*ForeignKey
Columns []*Column
ImportTimePkg bool
}
// Column reprsents a column for a table
type Column struct {
Name string
Type string
Tag *OrmTag
}
// ForeignKey represents a foreign key column for a table
type ForeignKey struct {
Name string
RefSchema string
RefTable string
RefColumn string
}
// OrmTag contains Beego ORM tag information for a column
type OrmTag struct {
Auto bool
Pk bool
Null bool
Index bool
Unique bool
Column string
Size string
Decimals string
Digits string
AutoNow bool
AutoNowAdd bool
Type string
Default string
RelOne bool
ReverseOne bool
RelFk bool
ReverseMany bool
RelM2M bool
}
// String returns the source code string for the Table struct
func (tb *Table) String() string {
rv := fmt.Sprintf("type %s struct {\n", camelCase(tb.Name))
for _, v := range tb.Columns {
rv += v.String() + "\n"
}
rv += "}\n"
return rv
}
// String returns the source code string of a field in Table struct
// It maps to a column in database table. e.g. Id int `orm:"column(id);auto"`
func (col *Column) String() string {
return fmt.Sprintf("%s %s %s", col.Name, col.Type, col.Tag.String())
}
// String returns the ORM tag string for a column
func (tag *OrmTag) String() string {
var ormOptions []string
if tag.Column != "" {
ormOptions = append(ormOptions, fmt.Sprintf("column(%s)", tag.Column))
}
if tag.Auto {
ormOptions = append(ormOptions, "auto")
}
if tag.Size != "" {
ormOptions = append(ormOptions, fmt.Sprintf("size(%s)", tag.Size))
}
if tag.Type != "" {
ormOptions = append(ormOptions, fmt.Sprintf("type(%s)", tag.Type))
}
if tag.Null {
ormOptions = append(ormOptions, "null")
}
if tag.AutoNow {
ormOptions = append(ormOptions, "auto_now")
}
if tag.AutoNowAdd {
ormOptions = append(ormOptions, "auto_now_add")
}
if tag.Decimals != "" {
ormOptions = append(ormOptions, fmt.Sprintf("digits(%s);decimals(%s)", tag.Digits, tag.Decimals))
}
if tag.RelFk {
ormOptions = append(ormOptions, "rel(fk)")
}
if tag.RelOne {
ormOptions = append(ormOptions, "rel(one)")
}
if tag.ReverseOne {
ormOptions = append(ormOptions, "reverse(one)")
}
if tag.ReverseMany {
ormOptions = append(ormOptions, "reverse(many)")
}
if tag.RelM2M {
ormOptions = append(ormOptions, "rel(m2m)")
}
if tag.Pk {
ormOptions = append(ormOptions, "pk")
}
if tag.Unique {
ormOptions = append(ormOptions, "unique")
}
if tag.Default != "" {
ormOptions = append(ormOptions, fmt.Sprintf("default(%s)", tag.Default))
}
if len(ormOptions) == 0 {
return ""
}
return fmt.Sprintf("`orm:\"%s\"`", strings.Join(ormOptions, ";"))
}
func generateAppcode(driver, connStr, level, tables, currpath string) {
var mode byte
switch level {
case "1":
mode = OModel
case "2":
mode = OModel | OController
case "3":
mode = OModel | OController | ORouter
default:
ColorLog("[ERRO] Invalid 'level' option: %s\n", level)
ColorLog("[HINT] Level must be either 1, 2 or 3\n")
os.Exit(2)
}
var selectedTables map[string]bool
if tables != "" {
selectedTables = make(map[string]bool)
for _, v := range strings.Split(tables, ",") {
selectedTables[v] = true
}
}
switch driver {
case "mysql":
case "postgres":
case "sqlite":
ColorLog("[ERRO] Generating app code from SQLite database is not supported yet.\n")
os.Exit(2)
default:
ColorLog("[ERRO] Unknown database driver: %s\n", driver)
ColorLog("[HINT] Driver must be one of mysql, postgres or sqlite\n")
os.Exit(2)
}
gen(driver, connStr, mode, selectedTables, currpath)
}
// Generate takes table, column and foreign key information from database connection
// and generate corresponding golang source files
func gen(dbms, connStr string, mode byte, selectedTableNames map[string]bool, apppath string) {
db, err := sql.Open(dbms, connStr)
if err != nil {
ColorLog("[ERRO] Could not connect to %s database: %s, %s\n", dbms, connStr, err)
os.Exit(2)
}
defer db.Close()
if trans, ok := dbDriver[dbms]; ok {
ColorLog("[INFO] Analyzing database tables...\n")
tableNames := trans.GetTableNames(db)
tables := getTableObjects(tableNames, db, trans)
mvcPath := new(MvcPath)
mvcPath.ModelPath = path.Join(apppath, "models")
mvcPath.ControllerPath = path.Join(apppath, "controllers")
mvcPath.RouterPath = path.Join(apppath, "routers")
createPaths(mode, mvcPath)
pkgPath := getPackagePath(apppath)
writeSourceFiles(pkgPath, tables, mode, mvcPath, selectedTableNames)
} else {
ColorLog("[ERRO] Generating app code from %s database is not supported yet.\n", dbms)
os.Exit(2)
}
}
// getTables gets a list table names in current database
func (*MysqlDB) GetTableNames(db *sql.DB) (tables []string) {
rows, err := db.Query("SHOW TABLES")
if err != nil {
ColorLog("[ERRO] Could not show tables\n")
ColorLog("[HINT] Check your connection string\n")
os.Exit(2)
}
defer rows.Close()
for rows.Next() {
var name string
if err := rows.Scan(&name); err != nil {
ColorLog("[ERRO] Could not show tables\n")
os.Exit(2)
}
tables = append(tables, name)
}
return
}
// getTableObjects process each table name
func getTableObjects(tableNames []string, db *sql.DB, dbTransformer DbTransformer) (tables []*Table) {
// if a table has a composite pk or doesn't have pk, we can't use it yet
// these tables will be put into blacklist so that other struct will not
// reference it.
blackList := make(map[string]bool)
// process constraints information for each table, also gather blacklisted table names
for _, tableName := range tableNames {
// create a table struct
tb := new(Table)
tb.Name = tableName
tb.Fk = make(map[string]*ForeignKey)
dbTransformer.GetConstraints(db, tb, blackList)
tables = append(tables, tb)
}
// process columns, ignoring blacklisted tables
for _, tb := range tables {
dbTransformer.GetColumns(db, tb, blackList)
}
return
}
// getConstraints gets primary key, unique key and foreign keys of a table from information_schema
// and fill in Table struct
func (*MysqlDB) GetConstraints(db *sql.DB, table *Table, blackList map[string]bool) {
rows, err := db.Query(
`SELECT
c.constraint_type, u.column_name, u.referenced_table_schema, u.referenced_table_name, referenced_column_name, u.ordinal_position
FROM
information_schema.table_constraints c
INNER JOIN
information_schema.key_column_usage u ON c.constraint_name = u.constraint_name
WHERE
c.table_schema = database() AND c.table_name = ? AND u.table_schema = database() AND u.table_name = ?`,
table.Name, table.Name) // u.position_in_unique_constraint,
if err != nil {
ColorLog("[ERRO] Could not query INFORMATION_SCHEMA for PK/UK/FK information\n")
os.Exit(2)
}
for rows.Next() {
var constraintTypeBytes, columnNameBytes, refTableSchemaBytes, refTableNameBytes, refColumnNameBytes, refOrdinalPosBytes []byte
if err := rows.Scan(&constraintTypeBytes, &columnNameBytes, &refTableSchemaBytes, &refTableNameBytes, &refColumnNameBytes, &refOrdinalPosBytes); err != nil {
ColorLog("[ERRO] Could not read INFORMATION_SCHEMA for PK/UK/FK information\n")
os.Exit(2)
}
constraintType, columnName, refTableSchema, refTableName, refColumnName, refOrdinalPos :=
string(constraintTypeBytes), string(columnNameBytes), string(refTableSchemaBytes),
string(refTableNameBytes), string(refColumnNameBytes), string(refOrdinalPosBytes)
if constraintType == "PRIMARY KEY" {
if refOrdinalPos == "1" {
table.Pk = columnName
} else {
table.Pk = ""
// add table to blacklist so that other struct will not reference it, because we are not
// registering blacklisted tables
blackList[table.Name] = true
}
} else if constraintType == "UNIQUE" {
table.Uk = append(table.Uk, columnName)
} else if constraintType == "FOREIGN KEY" {
fk := new(ForeignKey)
fk.Name = columnName
fk.RefSchema = refTableSchema
fk.RefTable = refTableName
fk.RefColumn = refColumnName
table.Fk[columnName] = fk
}
}
}
// getColumns retrieve columns details from information_schema
// and fill in the Column struct
func (mysqlDB *MysqlDB) GetColumns(db *sql.DB, table *Table, blackList map[string]bool) {
// retrieve columns
colDefRows, _ := db.Query(
`SELECT
column_name, data_type, column_type, is_nullable, column_default, extra
FROM
information_schema.columns
WHERE
table_schema = database() AND table_name = ?`,
table.Name)
defer colDefRows.Close()
for colDefRows.Next() {
// datatype as bytes so that SQL <null> values can be retrieved
var colNameBytes, dataTypeBytes, columnTypeBytes, isNullableBytes, columnDefaultBytes, extraBytes []byte
if err := colDefRows.Scan(&colNameBytes, &dataTypeBytes, &columnTypeBytes, &isNullableBytes, &columnDefaultBytes, &extraBytes); err != nil {
ColorLog("[ERRO] Could not query INFORMATION_SCHEMA for column information\n")
os.Exit(2)
}
colName, dataType, columnType, isNullable, columnDefault, extra :=
string(colNameBytes), string(dataTypeBytes), string(columnTypeBytes), string(isNullableBytes), string(columnDefaultBytes), string(extraBytes)
// create a column
col := new(Column)
col.Name = camelCase(colName)
col.Type = mysqlDB.GetGoDataType(dataType)
// Tag info
tag := new(OrmTag)
tag.Column = colName
if table.Pk == colName {
col.Name = "Id"
col.Type = "int"
if extra == "auto_increment" {
tag.Auto = true
} else {
tag.Pk = true
}
} else {
fkCol, isFk := table.Fk[colName]
isBl := false
if isFk {
_, isBl = blackList[fkCol.RefTable]
}
// check if the current column is a foreign key
if isFk && !isBl {
tag.RelFk = true
refStructName := fkCol.RefTable
col.Name = camelCase(colName)
col.Type = "*" + camelCase(refStructName)
} else {
// if the name of column is Id, and it's not primary key
if colName == "id" {
col.Name = "Id_RENAME"
}
if isNullable == "YES" {
tag.Null = true
}
if isSQLSignedIntType(dataType) {
sign := extractIntSignness(columnType)
if sign == "unsigned" && extra != "auto_increment" {
col.Type = mysqlDB.GetGoDataType(dataType + " " + sign)
}
}
if isSQLStringType(dataType) {
tag.Size = extractColSize(columnType)
}
if isSQLTemporalType(dataType) {
tag.Type = dataType
//check auto_now, auto_now_add
if columnDefault == "CURRENT_TIMESTAMP" && extra == "on update CURRENT_TIMESTAMP" {
tag.AutoNow = true
} else if columnDefault == "CURRENT_TIMESTAMP" {
tag.AutoNowAdd = true
}
// need to import time package
table.ImportTimePkg = true
}
if isSQLDecimal(dataType) {
tag.Digits, tag.Decimals = extractDecimal(columnType)
}
if isSQLBinaryType(dataType) {
tag.Size = extractColSize(columnType)
}
if isSQLBitType(dataType) {
tag.Size = extractColSize(columnType)
}
}
}
col.Tag = tag
table.Columns = append(table.Columns, col)
}
}
// GetGoDataType maps an SQL data type to Golang data type
func (*MysqlDB) GetGoDataType(sqlType string) (goType string) {
var typeMapping = map[string]string{}
typeMapping = typeMappingMysql
if v, ok := typeMapping[sqlType]; ok {
return v
}
ColorLog("[ERRO] data type (%s) not found!\n", sqlType)
os.Exit(2)
return goType
}
// GetTableNames for PostgreSQL
func (*PostgresDB) GetTableNames(db *sql.DB) (tables []string) {
rows, err := db.Query(`
SELECT table_name FROM information_schema.tables
WHERE table_catalog = current_database() AND
table_type = 'BASE TABLE' AND
table_schema NOT IN ('pg_catalog', 'information_schema')`)
if err != nil {
ColorLog("[ERRO] Could not show tables: %s\n", err)
ColorLog("[HINT] Check your connection string\n")
os.Exit(2)
}
defer rows.Close()
for rows.Next() {
var name string
if err := rows.Scan(&name); err != nil {
ColorLog("[ERRO] Could not show tables\n")
os.Exit(2)
}
tables = append(tables, name)
}
return
}
// GetConstraints for PostgreSQL
func (*PostgresDB) GetConstraints(db *sql.DB, table *Table, blackList map[string]bool) {
rows, err := db.Query(
`SELECT
c.constraint_type,
u.column_name,
cu.table_catalog AS referenced_table_catalog,
cu.table_name AS referenced_table_name,
cu.column_name AS referenced_column_name,
u.ordinal_position
FROM
information_schema.table_constraints c
INNER JOIN
information_schema.key_column_usage u ON c.constraint_name = u.constraint_name
INNER JOIN
information_schema.constraint_column_usage cu ON cu.constraint_name = c.constraint_name
WHERE
c.table_catalog = current_database() AND c.table_schema NOT IN ('pg_catalog', 'information_schema')
AND c.table_name = $1
AND u.table_catalog = current_database() AND u.table_schema NOT IN ('pg_catalog', 'information_schema')
AND u.table_name = $2`,
table.Name, table.Name) // u.position_in_unique_constraint,
if err != nil {
ColorLog("[ERRO] Could not query INFORMATION_SCHEMA for PK/UK/FK information: %s\n", err)
os.Exit(2)
}
for rows.Next() {
var constraintTypeBytes, columnNameBytes, refTableSchemaBytes, refTableNameBytes, refColumnNameBytes, refOrdinalPosBytes []byte
if err := rows.Scan(&constraintTypeBytes, &columnNameBytes, &refTableSchemaBytes, &refTableNameBytes, &refColumnNameBytes, &refOrdinalPosBytes); err != nil {
ColorLog("[ERRO] Could not read INFORMATION_SCHEMA for PK/UK/FK information\n")
os.Exit(2)
}
constraintType, columnName, refTableSchema, refTableName, refColumnName, refOrdinalPos :=
string(constraintTypeBytes), string(columnNameBytes), string(refTableSchemaBytes),
string(refTableNameBytes), string(refColumnNameBytes), string(refOrdinalPosBytes)
if constraintType == "PRIMARY KEY" {
if refOrdinalPos == "1" {
table.Pk = columnName
} else {
table.Pk = ""
// add table to blacklist so that other struct will not reference it, because we are not
// registering blacklisted tables
blackList[table.Name] = true
}
} else if constraintType == "UNIQUE" {
table.Uk = append(table.Uk, columnName)
} else if constraintType == "FOREIGN KEY" {
fk := new(ForeignKey)
fk.Name = columnName
fk.RefSchema = refTableSchema
fk.RefTable = refTableName
fk.RefColumn = refColumnName
table.Fk[columnName] = fk
}
}
}
// GetColumns for PostgreSQL
func (postgresDB *PostgresDB) GetColumns(db *sql.DB, table *Table, blackList map[string]bool) {
// retrieve columns
colDefRows, _ := db.Query(
`SELECT
column_name,
data_type,
data_type ||
CASE
WHEN data_type = 'character' THEN '('||character_maximum_length||')'
WHEN data_type = 'numeric' THEN '(' || numeric_precision || ',' || numeric_scale ||')'
ELSE ''
END AS column_type,
is_nullable,
column_default,
'' AS extra
FROM
information_schema.columns
WHERE
table_catalog = current_database() AND table_schema NOT IN ('pg_catalog', 'information_schema')
AND table_name = $1`,
table.Name)
defer colDefRows.Close()
for colDefRows.Next() {
// datatype as bytes so that SQL <null> values can be retrieved
var colNameBytes, dataTypeBytes, columnTypeBytes, isNullableBytes, columnDefaultBytes, extraBytes []byte
if err := colDefRows.Scan(&colNameBytes, &dataTypeBytes, &columnTypeBytes, &isNullableBytes, &columnDefaultBytes, &extraBytes); err != nil {
ColorLog("[ERRO] Could not query INFORMATION_SCHEMA for column information\n")
os.Exit(2)
}
colName, dataType, columnType, isNullable, columnDefault, extra :=
string(colNameBytes), string(dataTypeBytes), string(columnTypeBytes), string(isNullableBytes), string(columnDefaultBytes), string(extraBytes)
// create a column
col := new(Column)
col.Name = camelCase(colName)
col.Type = postgresDB.GetGoDataType(dataType)
// Tag info
tag := new(OrmTag)
tag.Column = colName
if table.Pk == colName {
col.Name = "Id"
col.Type = "int"
if extra == "auto_increment" {
tag.Auto = true
} else {
tag.Pk = true
}
} else {
fkCol, isFk := table.Fk[colName]
isBl := false
if isFk {
_, isBl = blackList[fkCol.RefTable]
}
// check if the current column is a foreign key
if isFk && !isBl {
tag.RelFk = true
refStructName := fkCol.RefTable
col.Name = camelCase(colName)
col.Type = "*" + camelCase(refStructName)
} else {
// if the name of column is Id, and it's not primary key
if colName == "id" {
col.Name = "Id_RENAME"
}
if isNullable == "YES" {
tag.Null = true
}
if isSQLStringType(dataType) {
tag.Size = extractColSize(columnType)
}
if isSQLTemporalType(dataType) || strings.HasPrefix(dataType, "timestamp") {
tag.Type = dataType
//check auto_now, auto_now_add
if columnDefault == "CURRENT_TIMESTAMP" && extra == "on update CURRENT_TIMESTAMP" {
tag.AutoNow = true
} else if columnDefault == "CURRENT_TIMESTAMP" {
tag.AutoNowAdd = true
}
// need to import time package
table.ImportTimePkg = true
}
if isSQLDecimal(dataType) {
tag.Digits, tag.Decimals = extractDecimal(columnType)
}
if isSQLBinaryType(dataType) {
tag.Size = extractColSize(columnType)
}
if isSQLStrangeType(dataType) {
tag.Type = dataType
}
}
}
col.Tag = tag
table.Columns = append(table.Columns, col)
}
}
// GetGoDataType returns the Go type from the mapped Postgres type
func (*PostgresDB) GetGoDataType(sqlType string) (goType string) {
if v, ok := typeMappingPostgres[sqlType]; ok {
return v
}
ColorLog("[ERRO] data type (%s) not found!\n", sqlType)
os.Exit(2)
return goType
}
// deleteAndRecreatePaths removes several directories completely
func createPaths(mode byte, paths *MvcPath) {
if (mode & OModel) == OModel {
os.Mkdir(paths.ModelPath, 0777)
}
if (mode & OController) == OController {
os.Mkdir(paths.ControllerPath, 0777)
}
if (mode & ORouter) == ORouter {
os.Mkdir(paths.RouterPath, 0777)
}
}
// writeSourceFiles generates source files for model/controller/router
// It will wipe the following directories and recreate them:./models, ./controllers, ./routers
// Newly geneated files will be inside these folders.
func writeSourceFiles(pkgPath string, tables []*Table, mode byte, paths *MvcPath, selectedTables map[string]bool) {
if (OModel & mode) == OModel {
ColorLog("[INFO] Creating model files...\n")
writeModelFiles(tables, paths.ModelPath, selectedTables)
}
if (OController & mode) == OController {
ColorLog("[INFO] Creating controller files...\n")
writeControllerFiles(tables, paths.ControllerPath, selectedTables, pkgPath)
}
if (ORouter & mode) == ORouter {
ColorLog("[INFO] Creating router files...\n")
writeRouterFile(tables, paths.RouterPath, selectedTables, pkgPath)
}
}
// writeModelFiles generates model files
func writeModelFiles(tables []*Table, mPath string, selectedTables map[string]bool) {
w := NewColorWriter(os.Stdout)
for _, tb := range tables {
// if selectedTables map is not nil and this table is not selected, ignore it
if selectedTables != nil {
if _, selected := selectedTables[tb.Name]; !selected {
continue
}
}
filename := getFileName(tb.Name)
fpath := path.Join(mPath, filename+".go")
var f *os.File
var err error
if isExist(fpath) {
ColorLog("[WARN] '%v' already exists. Do you want to overwrite it? [Yes|No] ", fpath)
if askForConfirmation() {
f, err = os.OpenFile(fpath, os.O_RDWR|os.O_TRUNC, 0666)
if err != nil {
ColorLog("[WARN] %v\n", err)
continue
}
} else {
ColorLog("[WARN] Skipped create file '%s'\n", fpath)
continue
}
} else {
f, err = os.OpenFile(fpath, os.O_CREATE|os.O_RDWR, 0666)
if err != nil {
ColorLog("[WARN] %v\n", err)
continue
}
}
template := ""
if tb.Pk == "" {
template = StructModelTPL
} else {
template = ModelTPL
}
fileStr := strings.Replace(template, "{{modelStruct}}", tb.String(), 1)
fileStr = strings.Replace(fileStr, "{{modelName}}", camelCase(tb.Name), -1)
fileStr = strings.Replace(fileStr, "{{tableName}}", tb.Name, -1)
// if table contains time field, import time.Time package
timePkg := ""
importTimePkg := ""
if tb.ImportTimePkg {
timePkg = "\"time\"\n"
importTimePkg = "import \"time\"\n"
}
fileStr = strings.Replace(fileStr, "{{timePkg}}", timePkg, -1)
fileStr = strings.Replace(fileStr, "{{importTimePkg}}", importTimePkg, -1)
if _, err := f.WriteString(fileStr); err != nil {
ColorLog("[ERRO] Could not write model file to %s\n", fpath)
os.Exit(2)
}
CloseFile(f)
fmt.Fprintf(w, "\t%s%screate%s\t %s%s\n", "\x1b[32m", "\x1b[1m", "\x1b[21m", fpath, "\x1b[0m")
formatSourceCode(fpath)
}
}
// writeControllerFiles generates controller files
func writeControllerFiles(tables []*Table, cPath string, selectedTables map[string]bool, pkgPath string) {
w := NewColorWriter(os.Stdout)
for _, tb := range tables {
// if selectedTables map is not nil and this table is not selected, ignore it
if selectedTables != nil {
if _, selected := selectedTables[tb.Name]; !selected {
continue
}
}
if tb.Pk == "" {
continue
}
filename := getFileName(tb.Name)
fpath := path.Join(cPath, filename+".go")
var f *os.File
var err error
if isExist(fpath) {
ColorLog("[WARN] '%v' already exists. Do you want to overwrite it? [Yes|No] ", fpath)
if askForConfirmation() {
f, err = os.OpenFile(fpath, os.O_RDWR|os.O_TRUNC, 0666)
if err != nil {
ColorLog("[WARN] %v\n", err)
continue
}
} else {
ColorLog("[WARN] Skipped create file '%s'\n", fpath)
continue
}
} else {
f, err = os.OpenFile(fpath, os.O_CREATE|os.O_RDWR, 0666)
if err != nil {
ColorLog("[WARN] %v\n", err)
continue
}
}
fileStr := strings.Replace(CtrlTPL, "{{ctrlName}}", camelCase(tb.Name), -1)
fileStr = strings.Replace(fileStr, "{{pkgPath}}", pkgPath, -1)
if _, err := f.WriteString(fileStr); err != nil {
ColorLog("[ERRO] Could not write controller file to %s\n", fpath)
os.Exit(2)
}
CloseFile(f)
fmt.Fprintf(w, "\t%s%screate%s\t %s%s\n", "\x1b[32m", "\x1b[1m", "\x1b[21m", fpath, "\x1b[0m")
formatSourceCode(fpath)
}
}
// writeRouterFile generates router file
func writeRouterFile(tables []*Table, rPath string, selectedTables map[string]bool, pkgPath string) {
w := NewColorWriter(os.Stdout)
var nameSpaces []string
for _, tb := range tables {
// if selectedTables map is not nil and this table is not selected, ignore it
if selectedTables != nil {
if _, selected := selectedTables[tb.Name]; !selected {
continue
}
}
if tb.Pk == "" {
continue
}
// add namespaces
nameSpace := strings.Replace(NamespaceTPL, "{{nameSpace}}", tb.Name, -1)
nameSpace = strings.Replace(nameSpace, "{{ctrlName}}", camelCase(tb.Name), -1)
nameSpaces = append(nameSpaces, nameSpace)
}
// add export controller
fpath := path.Join(rPath, "router.go")
routerStr := strings.Replace(RouterTPL, "{{nameSpaces}}", strings.Join(nameSpaces, ""), 1)
routerStr = strings.Replace(routerStr, "{{pkgPath}}", pkgPath, 1)
var f *os.File
var err error
if isExist(fpath) {
ColorLog("[WARN] '%v' already exists. Do you want to overwrite it? [Yes|No] ", fpath)
if askForConfirmation() {
f, err = os.OpenFile(fpath, os.O_RDWR|os.O_TRUNC, 0666)
if err != nil {
ColorLog("[WARN] %v\n", err)
return
}
} else {
ColorLog("[WARN] Skipped create file '%s'\n", fpath)
return
}
} else {
f, err = os.OpenFile(fpath, os.O_CREATE|os.O_RDWR, 0666)
if err != nil {
ColorLog("[WARN] %v\n", err)
return
}
}
if _, err := f.WriteString(routerStr); err != nil {
ColorLog("[ERRO] Could not write router file to '%s'\n", fpath)
os.Exit(2)
}
CloseFile(f)
fmt.Fprintf(w, "\t%s%screate%s\t %s%s\n", "\x1b[32m", "\x1b[1m", "\x1b[21m", fpath, "\x1b[0m")
formatSourceCode(fpath)
}
// formatSourceCode formats source files
func formatSourceCode(filename string) {
cmd := exec.Command("gofmt", "-w", filename)
if err := cmd.Run(); err != nil {
ColorLog("[WARN] gofmt err: %s\n", err)
}
}
// camelCase converts a _ delimited string to camel case
// e.g. very_important_person => VeryImportantPerson
func camelCase(in string) string {
tokens := strings.Split(in, "_")
for i := range tokens {
tokens[i] = strings.Title(strings.Trim(tokens[i], " "))
}
return strings.Join(tokens, "")
}
func isSQLTemporalType(t string) bool {
return t == "date" || t == "datetime" || t == "timestamp" || t == "time"
}
func isSQLStringType(t string) bool {
return t == "char" || t == "varchar"
}
func isSQLSignedIntType(t string) bool {
return t == "int" || t == "tinyint" || t == "smallint" || t == "mediumint" || t == "bigint"
}
func isSQLDecimal(t string) bool {
return t == "decimal"
}
func isSQLBinaryType(t string) bool {
return t == "binary" || t == "varbinary"
}
func isSQLBitType(t string) bool {
return t == "bit"
}
func isSQLStrangeType(t string) bool {
return t == "interval" || t == "uuid" || t == "json"
}
// extractColSize extracts field size: e.g. varchar(255) => 255
func extractColSize(colType string) string {
regex := regexp.MustCompile(`^[a-z]+\(([0-9]+)\)$`)
size := regex.FindStringSubmatch(colType)
return size[1]
}
func extractIntSignness(colType string) string {
regex := regexp.MustCompile(`(int|smallint|mediumint|bigint)\([0-9]+\)(.*)`)
signRegex := regex.FindStringSubmatch(colType)
return strings.Trim(signRegex[2], " ")
}
func extractDecimal(colType string) (digits string, decimals string) {
decimalRegex := regexp.MustCompile(`decimal\(([0-9]+),([0-9]+)\)`)
decimal := decimalRegex.FindStringSubmatch(colType)
digits, decimals = decimal[1], decimal[2]
return
}
func getFileName(tbName string) (filename string) {
// avoid test file
filename = tbName
for strings.HasSuffix(filename, "_test") {
pos := strings.LastIndex(filename, "_")
filename = filename[:pos] + filename[pos+1:]
}
return
}
func getPackagePath(curpath string) (packpath string) {
gopath := os.Getenv("GOPATH")
Debugf("gopath:%s", gopath)
if gopath == "" {
ColorLog("[ERRO] You should set GOPATH in the env")
os.Exit(2)
}
appsrcpath := ""
haspath := false
wgopath := filepath.SplitList(gopath)
for _, wg := range wgopath {
wg, _ = filepath.EvalSymlinks(path.Join(wg, "src"))
if filepath.HasPrefix(strings.ToLower(curpath), strings.ToLower(wg)) {
haspath = true
appsrcpath = wg
break
}
}
if !haspath {
ColorLog("[ERRO] Can't generate application code outside of GOPATH '%s'\n", gopath)
os.Exit(2)
}
if curpath == appsrcpath {