Migrate to go-git/go-git v5.0.0 (#10735)
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Lauris BH
GitHub
parent
2f928316db
commit
43c09134a9
315 changed files with 15239 additions and 92420 deletions
273
vendor/github.com/go-git/gcfg/read.go
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vendored
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273
vendor/github.com/go-git/gcfg/read.go
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@ -0,0 +1,273 @@
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package gcfg
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"strings"
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"github.com/go-git/gcfg/scanner"
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"github.com/go-git/gcfg/token"
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"gopkg.in/warnings.v0"
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)
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var unescape = map[rune]rune{'\\': '\\', '"': '"', 'n': '\n', 't': '\t', 'b': '\b'}
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// no error: invalid literals should be caught by scanner
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func unquote(s string) string {
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u, q, esc := make([]rune, 0, len(s)), false, false
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for _, c := range s {
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if esc {
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uc, ok := unescape[c]
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switch {
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case ok:
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u = append(u, uc)
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fallthrough
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case !q && c == '\n':
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esc = false
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continue
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}
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panic("invalid escape sequence")
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}
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switch c {
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case '"':
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q = !q
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case '\\':
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esc = true
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default:
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u = append(u, c)
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}
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}
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if q {
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panic("missing end quote")
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}
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if esc {
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panic("invalid escape sequence")
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}
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return string(u)
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}
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func read(c *warnings.Collector, callback func(string, string, string, string, bool) error,
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fset *token.FileSet, file *token.File, src []byte) error {
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//
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var s scanner.Scanner
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var errs scanner.ErrorList
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s.Init(file, src, func(p token.Position, m string) { errs.Add(p, m) }, 0)
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sect, sectsub := "", ""
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pos, tok, lit := s.Scan()
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errfn := func(msg string) error {
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return fmt.Errorf("%s: %s", fset.Position(pos), msg)
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}
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for {
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if errs.Len() > 0 {
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if err := c.Collect(errs.Err()); err != nil {
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return err
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}
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}
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switch tok {
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case token.EOF:
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return nil
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case token.EOL, token.COMMENT:
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pos, tok, lit = s.Scan()
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case token.LBRACK:
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pos, tok, lit = s.Scan()
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if errs.Len() > 0 {
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if err := c.Collect(errs.Err()); err != nil {
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return err
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}
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}
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if tok != token.IDENT {
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if err := c.Collect(errfn("expected section name")); err != nil {
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return err
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}
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}
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sect, sectsub = lit, ""
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pos, tok, lit = s.Scan()
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if errs.Len() > 0 {
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if err := c.Collect(errs.Err()); err != nil {
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return err
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}
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}
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if tok == token.STRING {
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sectsub = unquote(lit)
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if sectsub == "" {
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if err := c.Collect(errfn("empty subsection name")); err != nil {
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return err
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}
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}
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pos, tok, lit = s.Scan()
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if errs.Len() > 0 {
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if err := c.Collect(errs.Err()); err != nil {
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return err
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}
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}
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}
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if tok != token.RBRACK {
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if sectsub == "" {
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if err := c.Collect(errfn("expected subsection name or right bracket")); err != nil {
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return err
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}
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}
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if err := c.Collect(errfn("expected right bracket")); err != nil {
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return err
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}
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}
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pos, tok, lit = s.Scan()
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if tok != token.EOL && tok != token.EOF && tok != token.COMMENT {
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if err := c.Collect(errfn("expected EOL, EOF, or comment")); err != nil {
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return err
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}
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}
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// If a section/subsection header was found, ensure a
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// container object is created, even if there are no
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// variables further down.
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err := c.Collect(callback(sect, sectsub, "", "", true))
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if err != nil {
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return err
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}
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case token.IDENT:
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if sect == "" {
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if err := c.Collect(errfn("expected section header")); err != nil {
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return err
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}
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}
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n := lit
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pos, tok, lit = s.Scan()
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if errs.Len() > 0 {
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return errs.Err()
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}
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blank, v := tok == token.EOF || tok == token.EOL || tok == token.COMMENT, ""
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if !blank {
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if tok != token.ASSIGN {
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if err := c.Collect(errfn("expected '='")); err != nil {
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return err
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}
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}
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pos, tok, lit = s.Scan()
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if errs.Len() > 0 {
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if err := c.Collect(errs.Err()); err != nil {
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return err
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}
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}
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if tok != token.STRING {
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if err := c.Collect(errfn("expected value")); err != nil {
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return err
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}
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}
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v = unquote(lit)
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pos, tok, lit = s.Scan()
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if errs.Len() > 0 {
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if err := c.Collect(errs.Err()); err != nil {
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return err
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}
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}
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if tok != token.EOL && tok != token.EOF && tok != token.COMMENT {
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if err := c.Collect(errfn("expected EOL, EOF, or comment")); err != nil {
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return err
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}
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}
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}
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err := c.Collect(callback(sect, sectsub, n, v, blank))
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if err != nil {
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return err
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}
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default:
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if sect == "" {
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if err := c.Collect(errfn("expected section header")); err != nil {
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return err
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}
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}
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if err := c.Collect(errfn("expected section header or variable declaration")); err != nil {
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return err
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}
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}
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}
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panic("never reached")
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}
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func readInto(config interface{}, fset *token.FileSet, file *token.File,
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src []byte) error {
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//
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c := warnings.NewCollector(isFatal)
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firstPassCallback := func(s string, ss string, k string, v string, bv bool) error {
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return set(c, config, s, ss, k, v, bv, false)
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}
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err := read(c, firstPassCallback, fset, file, src)
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if err != nil {
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return err
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}
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secondPassCallback := func(s string, ss string, k string, v string, bv bool) error {
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return set(c, config, s, ss, k, v, bv, true)
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}
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err = read(c, secondPassCallback, fset, file, src)
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if err != nil {
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return err
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}
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return c.Done()
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}
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// ReadWithCallback reads gcfg formatted data from reader and calls
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// callback with each section and option found.
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//
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// Callback is called with section, subsection, option key, option value
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// and blank value flag as arguments.
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//
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// When a section is found, callback is called with nil subsection, option key
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// and option value.
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//
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// When a subsection is found, callback is called with nil option key and
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// option value.
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//
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// If blank value flag is true, it means that the value was not set for an option
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// (as opposed to set to empty string).
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//
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// If callback returns an error, ReadWithCallback terminates with an error too.
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func ReadWithCallback(reader io.Reader, callback func(string, string, string, string, bool) error) error {
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src, err := ioutil.ReadAll(reader)
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if err != nil {
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return err
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}
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fset := token.NewFileSet()
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file := fset.AddFile("", fset.Base(), len(src))
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c := warnings.NewCollector(isFatal)
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return read(c, callback, fset, file, src)
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}
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// ReadInto reads gcfg formatted data from reader and sets the values into the
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// corresponding fields in config.
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func ReadInto(config interface{}, reader io.Reader) error {
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src, err := ioutil.ReadAll(reader)
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if err != nil {
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return err
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}
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fset := token.NewFileSet()
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file := fset.AddFile("", fset.Base(), len(src))
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return readInto(config, fset, file, src)
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}
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// ReadStringInto reads gcfg formatted data from str and sets the values into
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// the corresponding fields in config.
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func ReadStringInto(config interface{}, str string) error {
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r := strings.NewReader(str)
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return ReadInto(config, r)
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}
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// ReadFileInto reads gcfg formatted data from the file filename and sets the
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// values into the corresponding fields in config.
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func ReadFileInto(config interface{}, filename string) error {
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f, err := os.Open(filename)
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if err != nil {
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return err
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}
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defer f.Close()
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src, err := ioutil.ReadAll(f)
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if err != nil {
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return err
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}
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fset := token.NewFileSet()
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file := fset.AddFile(filename, fset.Base(), len(src))
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return readInto(config, fset, file, src)
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}
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