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package gitpb
import (
"bufio"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"go.wit.com/log"
)
// does processing on the go.mod and go.sum files
func (repo *Repo) updateGitConfig() error {
if repo == nil {
return fmt.Errorf("gitpb.updateGitConfig() repo == nil")
}
if repo.GitConfig == nil {
repo.GitConfig = new(GitConfig)
}
repo.GitConfig.Core = make(map[string]string)
repo.GitConfig.Remotes = make(map[string]*GitRemote)
repo.GitConfig.Branches = make(map[string]*GitBranch)
repo.GitConfig.Submodules = make(map[string]string)
repo.GitConfig.Versions = make(map[string]string)
repo.GitConfig.Hashes = make(map[string]string)
return repo.readGitConfig()
}
// readGitConfig reads and parses the .git/config file
func (repo *Repo) readGitConfig() error {
filename := filepath.Join(repo.GetFullPath(), ".git/config")
file, err := os.Open(filename)
defer file.Close()
if err != nil {
return err
}
var currentSection string = ""
var currentName string = ""
scanner := bufio.NewScanner(file)
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
// Skip empty lines and comments
if line == "" || strings.HasPrefix(line, "#") || strings.HasPrefix(line, ";") {
continue
}
// Check for section headers
if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
line = strings.Trim(line, "[]")
parts := strings.Split(line, " ")
currentSection = parts[0]
if len(parts) == 2 {
line = strings.Trim(line, "[]")
currentName = strings.Trim(parts[1], "\"")
}
continue
}
partsNew := strings.SplitN(line, "=", 2)
if len(partsNew) != 2 {
log.Log(WARN, "error on config section:", currentSection, "line:", line)
}
key := strings.TrimSpace(partsNew[0])
key = strings.TrimSuffix(key, "\"")
value := strings.TrimSpace(partsNew[1])
value = strings.TrimSuffix(value, "\"")
switch currentSection {
case "core":
repo.GitConfig.Core[key] = value
case "gui":
// don't really need gui stuff right now
case "pull":
// don't store git config pull settings here
// git config probably has 'rebase = false'
case "remote":
test, ok := repo.GitConfig.Remotes[currentName]
if !ok {
test = new(GitRemote)
repo.GitConfig.Remotes[currentName] = test
}
log.Log(INFO, "switch currentSection", currentSection, currentName)
switch key {
case "url":
if test.Url == value {
continue
}
if test.Url == "" {
test.Url = value
continue
}
log.Log(INFO, "error url mismatch", test.Url, value)
case "fetch":
if test.Fetch == value {
continue
}
if test.Fetch == "" {
test.Fetch = value
continue
}
log.Log(INFO, "error fetch mismatch", test.Fetch, value)
default:
log.Log(INFO, "unknown remote:", line)
}
case "branch":
test, ok := repo.GitConfig.Branches[currentName]
if !ok {
test = new(GitBranch)
repo.GitConfig.Branches[currentName] = test
repo.processBranch(currentName)
}
switch key {
case "remote":
repo.GitConfig.Branches[currentName].Remote = value
case "merge":
repo.GitConfig.Branches[currentName].Merge = value
default:
log.Log(INFO, "error unknown remote:", currentSection, currentName, key, value)
log.Log(INFO, "unknown branch:", line)
}
case "submodule":
// test, ok := rs.gitConfig.submodules[currentName]
switch key {
case "active":
// probably 'true' or 'false'
case "url":
repo.GitConfig.Submodules[currentName] = value
default:
log.Log(WARN, "unknown submodule line:", line)
}
case "diff":
// test, ok := rs.gitConfig.submodules[currentName]
switch key {
case "renameLimit":
log.Log(INFO, "name:", line)
default:
log.Log(WARN, "unknown name line:", filename, line)
}
case "user":
// test, ok := rs.gitConfig.submodules[currentName]
switch key {
case "name":
log.Log(INFO, "name:", line)
case "email":
log.Log(INFO, "email:", line)
default:
log.Log(WARN, "unknown name line:", filename, line)
}
case "git-bug":
log.Log(WARN, "repo uses git-bug!", filename)
default:
log.Log(WARN, filename, "unknown line:", line)
}
}
if err := scanner.Err(); err != nil {
return err
}
return nil
}
func (repo *Repo) processBranch(branch string) {
log.Log(INFO, " ", branch)
hash, ok := repo.GitConfig.Hashes[branch]
filename := filepath.Join(repo.GetFullPath() + "/.git/refs/heads/" + branch)
log.Log(INFO, " hash: need to open", filename)
data, err := ioutil.ReadFile(filename)
if err != nil {
log.Log(WARN, "hash: read failed", filename)
return
}
newhash := strings.TrimSpace(string(data))
log.Log(INFO, " hash:", newhash)
repo.GitConfig.Hashes[branch] = newhash
if ok {
if hash != newhash {
log.Log(WARN, "hash changed", hash)
}
}
name, _ := repo.gitDescribeByHash(newhash)
repo.GitConfig.Versions[newhash] = name
log.Log(INFO, " hash: version", name)
}
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