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kclfile.go
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kclfile.go
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package kpm
import (
"bufio"
"bytes"
"github.com/orangebees/kpm/pkg/kpm/go-oneutils/Convert"
"github.com/orangebees/kpm/pkg/kpm/go-oneutils/Set"
"github.com/valyala/bytebufferpool"
"io"
"os"
"path/filepath"
"strings"
)
type KCLFile struct {
//文件路径
Path string
//文件内容
Body []byte
//导入集合
Imports Set.Set
//写入标志
WriterFlag bool
}
func NewKCLFileFromFile(path string) (*KCLFile, error) {
kclF := &KCLFile{
Path: path,
Body: nil,
Imports: Set.New(),
WriterFlag: false,
}
//读取每一行
rawbody, err := os.ReadFile(path)
if err != nil {
return nil, err
}
//rawbody := Convert.S2B(Def)
r := bufio.NewReader(bytes.NewReader(rawbody))
linecount := 0
for {
line, err := r.ReadString('\n')
if err != nil && err != io.EOF {
//遇到未知错误
panic(err)
}
if err == io.EOF {
break
}
linecount++
line = strings.TrimSpace(line)
linelen := len(line)
if linelen <= 6 {
//跳过无效短行
continue
}
if line[0:1] == "#" {
//跳过注释
continue
}
if line[0:6] != "import" {
//遇到非import直接退出
break
}
lastbyte := ' '
var modname []byte
loadmodname := false
for i := 6; i < linelen; i++ {
//当上一个元素是空格,这个元素不是空格的时候跳入
if !loadmodname {
if lastbyte == ' ' && line[i] != ' ' {
loadmodname = true
lastbyte = int32(line[i])
modname = append(modname, line[i])
continue
}
}
//当上一个元素不是空格,这个元素是空格的时候跳出
if lastbyte != ' ' && line[i] == ' ' {
break
}
modname = append(modname, line[i])
lastbyte = int32(line[i])
}
//检查是否是系统模块
issysmod := false
modnamestr := string(modname[1:])
for i := 0; i < len(systemPkg); i++ {
if systemPkg[i] == modnamestr {
issysmod = true
break
}
}
if issysmod {
kclF.Imports.SAdd(modnamestr)
}
}
for i := 0; i >= len(rawbody) || linecount > 0; i++ {
if linecount == 1 {
kclF.Body = rawbody[i:]
break
}
if rawbody[i] == '\n' {
linecount--
}
}
return kclF, nil
}
func (f *KCLFile) Save() error {
if f.WriterFlag {
ipt := f.Imports.SMembers()
b := bytebufferpool.Get()
defer bytebufferpool.Put(b)
for i := 0; i < len(ipt); i++ {
b.WriteString("import ")
b.WriteString(ipt[i])
b.WriteByte('\n')
}
b.WriteByte('\n')
b.Write(f.Body)
err := os.WriteFile(f.Path, b.Bytes(), 0777)
if err != nil {
return err
}
}
return nil
}
func (f *KCLFile) AddPkgPrefix(str string) {
ipt := f.Imports.SMembers()
for i := 0; i < len(ipt); i++ {
f.WriterFlag = true
ipt[i] = str + "." + ipt[i]
}
if f.WriterFlag {
f.Imports.Reset()
f.Imports.SAdd(ipt...)
}
}
func (f *KCLFile) AddPkgPrefixFromPath(str string) {
var newPrefix []byte
for i := 0; i < len(str); i++ {
tmp := str[i]
if tmp != filepath.Separator {
newPrefix = append(newPrefix, tmp)
} else {
newPrefix = append(newPrefix, '.')
}
}
ipt := f.Imports.SMembers()
for i := 0; i < len(ipt); i++ {
f.WriterFlag = true
ipt[i] = Convert.B2S(newPrefix) + "." + ipt[i]
}
if f.WriterFlag {
f.Imports.Reset()
f.Imports.SAdd(ipt...)
}
}