diff options
Diffstat (limited to 'golang/kati/shellutil.go')
| -rw-r--r-- | golang/kati/shellutil.go | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/golang/kati/shellutil.go b/golang/kati/shellutil.go deleted file mode 100644 index b7a16ac..0000000 --- a/golang/kati/shellutil.go +++ /dev/null @@ -1,232 +0,0 @@ -// Copyright 2015 Google Inc. All rights reserved -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package kati - -import ( - "errors" - "fmt" - "io" - "strings" - "time" -) - -var shBuiltins = []struct { - name string - pattern expr - compact func(*funcShell, []Value) Value -}{ - { - name: "android:rot13", - // in repo/android/build/core/definisions.mk - // echo $(1) | tr 'a-zA-Z' 'n-za-mN-ZA-M' - pattern: expr{ - literal("echo "), - matchVarref{}, - literal(" | tr 'a-zA-Z' 'n-za-mN-ZA-M'"), - }, - compact: func(sh *funcShell, matches []Value) Value { - return &funcShellAndroidRot13{ - funcShell: sh, - v: matches[0], - } - }, - }, - { - name: "shell-date", - pattern: expr{ - mustLiteralRE(`date \+(\S+)`), - }, - compact: compactShellDate, - }, - { - name: "shell-date-quoted", - pattern: expr{ - mustLiteralRE(`date "\+([^"]+)"`), - }, - compact: compactShellDate, - }, -} - -type funcShellAndroidRot13 struct { - *funcShell - v Value -} - -func rot13(buf []byte) { - for i, b := range buf { - // tr 'a-zA-Z' 'n-za-mN-ZA-M' - if b >= 'a' && b <= 'z' { - b += 'n' - 'a' - if b > 'z' { - b -= 'z' - 'a' + 1 - } - } else if b >= 'A' && b <= 'Z' { - b += 'N' - 'A' - if b > 'Z' { - b -= 'Z' - 'A' + 1 - } - } - buf[i] = b - } -} - -func (f *funcShellAndroidRot13) Eval(w evalWriter, ev *Evaluator) error { - abuf := newEbuf() - fargs, err := ev.args(abuf, f.v) - if err != nil { - return err - } - rot13(fargs[0]) - w.Write(fargs[0]) - abuf.release() - return nil -} - -var ( - // ShellDateTimestamp is an timestamp used for $(shell date). - ShellDateTimestamp time.Time - shellDateFormatRef = map[string]string{ - "%Y": "2006", - "%m": "01", - "%d": "02", - "%H": "15", - "%M": "04", - "%S": "05", - "%b": "Jan", - "%k": "15", // XXX - } -) - -type funcShellDate struct { - *funcShell - format string -} - -func compactShellDate(sh *funcShell, v []Value) Value { - if ShellDateTimestamp.IsZero() { - return sh - } - tf, ok := v[0].(literal) - if !ok { - return sh - } - tfstr := string(tf) - for k, v := range shellDateFormatRef { - tfstr = strings.Replace(tfstr, k, v, -1) - } - return &funcShellDate{ - funcShell: sh, - format: tfstr, - } -} - -func (f *funcShellDate) Eval(w evalWriter, ev *Evaluator) error { - fmt.Fprint(w, ShellDateTimestamp.Format(f.format)) - return nil -} - -type buildinCommand interface { - run(w evalWriter) -} - -var errFindEmulatorDisabled = errors.New("builtin: find emulator disabled") - -func parseBuiltinCommand(cmd string) (buildinCommand, error) { - if !UseFindEmulator { - return nil, errFindEmulatorDisabled - } - if strings.HasPrefix(trimLeftSpace(cmd), "build/tools/findleaves") { - return parseFindleavesCommand(cmd) - } - return parseFindCommand(cmd) -} - -type shellParser struct { - cmd string - ungetToken string -} - -func (p *shellParser) token() (string, error) { - if p.ungetToken != "" { - tok := p.ungetToken - p.ungetToken = "" - return tok, nil - } - p.cmd = trimLeftSpace(p.cmd) - if len(p.cmd) == 0 { - return "", io.EOF - } - if p.cmd[0] == ';' { - tok := p.cmd[0:1] - p.cmd = p.cmd[1:] - return tok, nil - } - if p.cmd[0] == '&' { - if len(p.cmd) == 1 || p.cmd[1] != '&' { - return "", errFindBackground - } - tok := p.cmd[0:2] - p.cmd = p.cmd[2:] - return tok, nil - } - // TODO(ukai): redirect token. - i := 0 - for i < len(p.cmd) { - if isWhitespace(rune(p.cmd[i])) || p.cmd[i] == ';' || p.cmd[i] == '&' { - break - } - i++ - } - tok := p.cmd[0:i] - p.cmd = p.cmd[i:] - c := tok[0] - if c == '\'' || c == '"' { - if len(tok) < 2 || tok[len(tok)-1] != c { - return "", errFindUnbalancedQuote - } - // todo: unquote? - tok = tok[1 : len(tok)-1] - } - return tok, nil -} - -func (p *shellParser) unget(s string) { - if s != "" { - p.ungetToken = s - } -} - -func (p *shellParser) expect(toks ...string) error { - tok, err := p.token() - if err != nil { - return err - } - for _, t := range toks { - if tok == t { - return nil - } - } - return fmt.Errorf("shell: token=%q; want=%q", tok, toks) -} - -func (p *shellParser) expectSeq(toks ...string) error { - for _, tok := range toks { - err := p.expect(tok) - if err != nil { - return err - } - } - return nil -} |