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templates.go
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templates.go
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package boilingcore
import (
"fmt"
"io/ioutil"
"path/filepath"
"sort"
"strings"
"text/template"
"github.com/pkg/errors"
"github.com/vattle/sqlboiler/bdb"
"github.com/vattle/sqlboiler/queries"
"github.com/vattle/sqlboiler/strmangle"
)
// templateData for sqlboiler templates
type templateData struct {
Tables []bdb.Table
Table bdb.Table
// Controls what names are output
PkgName string
Schema string
// Controls which code is output (mysql vs postgres ...)
DriverName string
UseLastInsertID bool
// Turn off auto timestamps or hook generation
NoHooks bool
NoAutoTimestamps bool
// Tags control which
Tags []string
// StringFuncs are usable in templates with stringMap
StringFuncs map[string]func(string) string
// Dialect controls quoting
Dialect queries.Dialect
LQ string
RQ string
}
func (t templateData) Quotes(s string) string {
return fmt.Sprintf("%s%s%s", t.LQ, s, t.RQ)
}
func (t templateData) SchemaTable(table string) string {
return strmangle.SchemaTable(t.LQ, t.RQ, t.DriverName, t.Schema, table)
}
type templateList struct {
*template.Template
}
type templateNameList []string
func (t templateNameList) Len() int {
return len(t)
}
func (t templateNameList) Swap(k, j int) {
t[k], t[j] = t[j], t[k]
}
func (t templateNameList) Less(k, j int) bool {
// Make sure "struct" goes to the front
if t[k] == "struct.tpl" {
return true
}
res := strings.Compare(t[k], t[j])
if res <= 0 {
return true
}
return false
}
// Templates returns the name of all the templates defined in the template list
func (t templateList) Templates() []string {
tplList := t.Template.Templates()
if len(tplList) == 0 {
return nil
}
ret := make([]string, 0, len(tplList))
for _, tpl := range tplList {
if name := tpl.Name(); strings.HasSuffix(name, ".tpl") {
ret = append(ret, name)
}
}
sort.Sort(templateNameList(ret))
return ret
}
// loadTemplates loads all of the template files in the specified directory.
func loadTemplates(dir string) (*templateList, error) {
pattern := filepath.Join(dir, "*.tpl")
tpl, err := template.New("").Funcs(templateFunctions).ParseGlob(pattern)
if err != nil {
return nil, err
}
return &templateList{Template: tpl}, err
}
// loadTemplate loads a single template file
func loadTemplate(dir string, filename string) (*template.Template, error) {
pattern := filepath.Join(dir, filename)
tpl, err := template.New("").Funcs(templateFunctions).ParseFiles(pattern)
if err != nil {
return nil, err
}
return tpl.Lookup(filename), err
}
// replaceTemplate finds the template matching with name and replaces its
// contents with the contents of the template located at filename
func replaceTemplate(tpl *template.Template, name, filename string) error {
if tpl == nil {
return fmt.Errorf("template for %s is nil", name)
}
b, err := ioutil.ReadFile(filename)
if err != nil {
return errors.Wrapf(err, "failed reading template file: %s", filename)
}
if tpl, err = tpl.New(name).Funcs(templateFunctions).Parse(string(b)); err != nil {
return errors.Wrapf(err, "failed to parse template file: %s", filename)
}
return nil
}
// set is to stop duplication from named enums, allowing a template loop
// to keep some state
type once map[string]struct{}
func newOnce() once {
return make(once)
}
func (o once) Has(s string) bool {
_, ok := o[s]
return ok
}
func (o once) Put(s string) bool {
if _, ok := o[s]; ok {
return false
}
o[s] = struct{}{}
return true
}
// templateStringMappers are placed into the data to make it easy to use the
// stringMap function.
var templateStringMappers = map[string]func(string) string{
// String ops
"quoteWrap": func(a string) string { return fmt.Sprintf(`"%s"`, a) },
"replaceReserved": strmangle.ReplaceReservedWords,
// Casing
"titleCase": strmangle.TitleCase,
"camelCase": strmangle.CamelCase,
}
// templateFunctions is a map of all the functions that get passed into the
// templates. If you wish to pass a new function into your own template,
// add a function pointer here.
var templateFunctions = template.FuncMap{
// String ops
"quoteWrap": func(s string) string { return fmt.Sprintf(`"%s"`, s) },
"id": strmangle.Identifier,
// Pluralization
"singular": strmangle.Singular,
"plural": strmangle.Plural,
// Casing
"titleCase": strmangle.TitleCase,
"camelCase": strmangle.CamelCase,
// String Slice ops
"join": func(sep string, slice []string) string { return strings.Join(slice, sep) },
"joinSlices": strmangle.JoinSlices,
"stringMap": strmangle.StringMap,
"prefixStringSlice": strmangle.PrefixStringSlice,
"containsAny": strmangle.ContainsAny,
"generateTags": strmangle.GenerateTags,
"generateIgnoreTags": strmangle.GenerateIgnoreTags,
// Enum ops
"parseEnumName": strmangle.ParseEnumName,
"parseEnumVals": strmangle.ParseEnumVals,
"isEnumNormal": strmangle.IsEnumNormal,
"shouldTitleCaseEnum": strmangle.ShouldTitleCaseEnum,
"onceNew": newOnce,
"oncePut": once.Put,
"onceHas": once.Has,
// String Map ops
"makeStringMap": strmangle.MakeStringMap,
// Set operations
"setInclude": strmangle.SetInclude,
// Database related mangling
"whereClause": strmangle.WhereClause,
// Relationship text helpers
"txtsFromFKey": txtsFromFKey,
"txtsFromOneToOne": txtsFromOneToOne,
"txtsFromToMany": txtsFromToMany,
// dbdrivers ops
"filterColumnsByDefault": bdb.FilterColumnsByDefault,
"filterColumnsByEnum": bdb.FilterColumnsByEnum,
"sqlColDefinitions": bdb.SQLColDefinitions,
"columnNames": bdb.ColumnNames,
"columnDBTypes": bdb.ColumnDBTypes,
"getTable": bdb.GetTable,
}