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package main
import (
"bufio"
"bytes"
"fmt"
"io/ioutil"
"os"
"strings"
)
func ProcessFileNative(filePath string, from string, to string) {
// Open file to read
fileContent, err := ioutil.ReadFile(filePath)
if err != nil {
fmt.Println(err)
}
// Scan file line by line
scanner := bufio.NewScanner(bytes.NewReader(fileContent))
// Track line that is being scanned
scanLine := 0
// Track number of changes in file
numChages := 0
// Control variables
isImportLine := false
// Store final output text
output := ""
// Scan through the lines of go file
for scanner.Scan() {
scanLine++
line := scanner.Text()
bareLine := strings.Replace(line, " ", "", -1)
// If it is a single import statement, replace the path in that line
if strings.Contains(bareLine, "import\"") {
fmt.Println("Found Import On Line", scanLine)
newImport := strings.Replace(line, from, to, -1)
output += newImport + "\n"
numChages++
continue
}
// Change isImportLine accordingly if import statements are detected
if strings.Contains(bareLine, "import(") {
fmt.Println("Found Multiple Imports Starting On Line", scanLine)
isImportLine = true
} else if isImportLine && strings.Contains(bareLine, ")") {
fmt.Println("Imports Finish On Line", scanLine)
isImportLine = false
}
// If it is a import line, replace the import
if isImportLine {
newImport := strings.Replace(line, from, to, -1)
fmt.Println("Replacing", line, "to", newImport, "on line", scanLine)
output += newImport + "\n"
numChages++
continue
}
// Just copy the rest of the lines to the output
output += line + "\n"
}
// Only write if changes were made
if numChages > 0 {
ioutil.WriteFile(filePath, []byte(output), os.ModePerm)
}
}
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