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Copy pathfile.go
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229 lines (198 loc) · 5.57 KB
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Copy pathfile.go
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229 lines (198 loc) · 5.57 KB
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package gloc
import (
"bufio"
"fmt"
"io"
"os"
"sort"
"strings"
"unicode"
)
type ClocFile struct {
Code int32 `xml:"code,attr" json:"code"`
Comments int32 `xml:"comment,attr" json:"comment"`
Blanks int32 `xml:"blank,attr" json:"blank"`
Name string `xml:"name,attr" json:"name"`
Lang string `xml:"language,attr" json:"language"`
}
type ClocFiles []ClocFile
func (cf ClocFiles) SortByName() {
sortFunc := func(i, j int) bool {
return cf[i].Name < cf[j].Name
}
sort.Slice(cf, sortFunc)
}
func (cf ClocFiles) SortByComments() {
sortFunc := func(i, j int) bool {
if cf[i].Comments == cf[j].Comments {
return cf[i].Code > cf[j].Code
}
return cf[i].Comments > cf[j].Comments
}
sort.Slice(cf, sortFunc)
}
func (cf ClocFiles) SortByBlanks() {
sortFunc := func(i, j int) bool {
if cf[i].Blanks == cf[j].Blanks {
return cf[i].Code > cf[j].Code
}
return cf[i].Blanks > cf[j].Blanks
}
sort.Slice(cf, sortFunc)
}
func (cf ClocFiles) SortByCode() {
sortFunc := func(i, j int) bool {
return cf[i].Code > cf[j].Code
}
sort.Slice(cf, sortFunc)
}
func AnalyzeFile(filename string, language *Language, opts *ClocOptions) *ClocFile {
fp, err := os.Open(filename)
if err != nil {
// ignore error
return &ClocFile{Name: filename}
}
defer fp.Close()
return AnalyzeReader(filename, language, fp, opts)
}
func AnalyzeReader(filename string, language *Language, file io.Reader, opts *ClocOptions) *ClocFile {
if opts.Debug {
fmt.Printf("filename=%v\n", filename)
}
clocFile := &ClocFile{
Name: filename,
Lang: language.Name,
}
isFirstLine := true
var inComments [][2]string
buf := getByteSlice()
defer putByteSlice(buf)
scanner := bufio.NewScanner(file)
scanner.Buffer(buf.Bytes(), 1024*1024)
scannerloop:
for scanner.Scan() {
lineOrg := scanner.Text()
line := strings.TrimSpace(lineOrg)
if len(strings.TrimSpace(line)) == 0 {
onBlank(clocFile, opts, len(inComments) > 0, line, lineOrg)
continue
}
// shebang line is 'code'
if isFirstLine && strings.HasPrefix(line, "#!") {
onCode(clocFile, opts, len(inComments) > 0, line, lineOrg)
isFirstLine = false
continue
}
if len(inComments) == 0 {
if isFirstLine {
line = trimBOM(line)
}
if len(language.regexLineComments) > 0 {
singleloopRegex:
for _, singleCommentRegex := range language.regexLineComments {
if singleCommentRegex.MatchString(line) {
// check if single comment is a prefix of multi comment
for _, ml := range language.multiLines {
if ml[0] != "" && strings.HasPrefix(line, ml[0]) {
break singleloopRegex
}
}
onComment(clocFile, opts, len(inComments) > 0, line, lineOrg)
continue scannerloop
}
}
} else {
singleloop:
for _, singleComment := range language.lineComments {
if strings.HasPrefix(line, singleComment) {
// check if single comment is a prefix of multi comment
for _, ml := range language.multiLines {
if ml[0] != "" && strings.HasPrefix(line, ml[0]) {
break singleloop
}
}
onComment(clocFile, opts, len(inComments) > 0, line, lineOrg)
continue scannerloop
}
}
}
if len(language.multiLines) == 0 {
onCode(clocFile, opts, len(inComments) > 0, line, lineOrg)
continue scannerloop
}
}
if len(inComments) == 0 && !containsComment(line, language.multiLines) {
onCode(clocFile, opts, len(inComments) > 0, line, lineOrg)
continue scannerloop
}
lenLine := len(line)
if len(language.multiLines) == 1 && len(language.multiLines[0]) == 2 && language.multiLines[0][0] == "" {
onCode(clocFile, opts, len(inComments) > 0, line, lineOrg)
continue
}
codeFlags := make([]bool, len(language.multiLines))
for pos := 0; pos < lenLine; {
for idx, ml := range language.multiLines {
begin, end := ml[0], ml[1]
lenBegin := len(begin)
if pos+lenBegin <= lenLine && strings.HasPrefix(line[pos:], begin) && (begin != end || len(inComments) == 0) {
pos += lenBegin
inComments = append(inComments, [2]string{begin, end})
continue
}
if n := len(inComments); n > 0 {
last := inComments[n-1]
if pos+len(last[1]) <= lenLine && strings.HasPrefix(line[pos:], last[1]) {
inComments = inComments[:n-1]
pos += len(last[1])
}
} else if pos < lenLine && !unicode.IsSpace(nextRune(line[pos:])) {
codeFlags[idx] = true
}
}
pos++
}
isCode := true
for _, b := range codeFlags {
if !b {
isCode = false
}
}
if isCode {
onCode(clocFile, opts, len(inComments) > 0, line, lineOrg)
} else {
onComment(clocFile, opts, len(inComments) > 0, line, lineOrg)
}
}
return clocFile
}
func onBlank(clocFile *ClocFile, opts *ClocOptions, isInComments bool, line, lineOrg string) {
clocFile.Blanks++
if opts.OnBlank != nil {
opts.OnBlank(line)
}
if opts.Debug {
fmt.Printf("[BLNK, cd:%d, cm:%d, bk:%d, iscm:%v] %s\n",
clocFile.Code, clocFile.Comments, clocFile.Blanks, isInComments, lineOrg)
}
}
func onComment(clocFile *ClocFile, opts *ClocOptions, isInComments bool, line, lineOrg string) {
clocFile.Comments++
if opts.OnComment != nil {
opts.OnComment(line)
}
if opts.Debug {
fmt.Printf("[COMM, cd:%d, cm:%d, bk:%d, iscm:%v] %s\n",
clocFile.Code, clocFile.Comments, clocFile.Blanks, isInComments, lineOrg)
}
}
func onCode(clocFile *ClocFile, opts *ClocOptions, isInComments bool, line, lineOrg string) {
clocFile.Code++
if opts.OnCode != nil {
opts.OnCode(line)
}
if opts.Debug {
fmt.Printf("[CODE, cd:%d, cm:%d, bk:%d, iscm:%v] %s\n",
clocFile.Code, clocFile.Comments, clocFile.Blanks, isInComments, lineOrg)
}
}