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|
package main
import (
"io/ioutil"
"os"
"strings"
)
func LoadNonemptyLines(fname string, joinContinuationLines bool) []*Line {
lines, err := readLines(fname, joinContinuationLines)
if err != nil {
errorf(fname, NO_LINES, "Cannot be read.")
return nil
}
if len(lines) == 0 {
errorf(fname, NO_LINES, "Must not be empty.")
return nil
}
return lines
}
func LoadExistingLines(fname string, foldBackslashLines bool) []*Line {
lines, err := readLines(fname, foldBackslashLines)
if lines == nil || err != nil {
fatalf(fname, NO_LINES, "Cannot be read.")
}
return lines
}
func getLogicalLine(fname string, rawLines []*RawLine, pindex *int) *Line {
text := ""
index := *pindex
firstlineno := rawLines[index].lineno
var lineRawLines []*RawLine
interestingRawLines := rawLines[index:]
for i, rawLine := range interestingRawLines {
indent, rawText, outdent, cont := splitRawLine(rawLine.textnl)
if text == "" {
text += indent
}
text += rawText
lineRawLines = append(lineRawLines, rawLine)
if cont == "\\" && i != len(interestingRawLines)-1 {
text += " "
index++
} else {
text += outdent + cont
break
}
}
lastlineno := rawLines[index].lineno
*pindex = index + 1
if firstlineno == lastlineno {
return NewLine(fname, sprintf("%d", firstlineno), text, lineRawLines)
} else {
return NewLine(fname, sprintf("%d--%d", firstlineno, lastlineno), text, lineRawLines)
}
}
func splitRawLine(textnl string) (leadingWhitespace, text, trailingWhitespace, cont string) {
m1234 := strings.TrimSuffix(textnl, "\n")
m234 := strings.TrimLeft(m1234, " \t")
m23 := strings.TrimSuffix(m234, "\\")
m2 := strings.TrimRight(m23, " \t")
return m1234[:len(m1234)-len(m234)], m2, m23[len(m2):], m234[len(m23):]
}
func readLines(fname string, joinContinuationLines bool) ([]*Line, error) {
rawText, err := ioutil.ReadFile(fname)
if err != nil {
return nil, err
}
return convertToLogicalLines(fname, string(rawText), joinContinuationLines), nil
}
func convertToLogicalLines(fname string, rawText string, joinContinuationLines bool) []*Line {
var rawLines []*RawLine
for lineno, rawLine := range strings.SplitAfter(rawText, "\n") {
if rawLine != "" {
rawLines = append(rawLines, &RawLine{1 + lineno, rawLine})
}
}
var loglines []*Line
if joinContinuationLines {
for lineno := 0; lineno < len(rawLines); {
loglines = append(loglines, getLogicalLine(fname, rawLines, &lineno))
}
} else {
for _, rawLine := range rawLines {
loglines = append(loglines, NewLine(fname, sprintf("%d", rawLine.lineno), strings.TrimSuffix(rawLine.textnl, "\n"), []*RawLine{rawLine}))
}
}
if 0 < len(rawLines) && !hasSuffix(rawLines[len(rawLines)-1].textnl, "\n") {
errorf(fname, sprintf("%d", rawLines[len(rawLines)-1].lineno), "File must end with a newline.")
}
return loglines
}
func saveAutofixChanges(lines []*Line) {
if !G.opts.Autofix {
return
}
changes := make(map[string][]*RawLine)
changed := make(map[string]bool)
for _, line := range lines {
if line.changed {
changed[line.fname] = true
}
changes[line.fname] = append(changes[line.fname], line.rawLines()...)
}
for fname := range changed {
rawLines := changes[fname]
tmpname := fname + ".pkglint.tmp"
text := ""
for _, rawLine := range rawLines {
text += rawLine.textnl
}
err := ioutil.WriteFile(tmpname, []byte(text), 0777)
if err != nil {
errorf(tmpname, NO_LINES, "Cannot write.")
continue
}
err = os.Rename(tmpname, fname)
if err != nil {
errorf(fname, NO_LINES, "Cannot overwrite with auto-fixed content.")
continue
}
notef(fname, NO_LINES, "Has been auto-fixed. Please re-run pkglint.")
}
}
|
