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// Copyright (C) 2017-2018, 2020-2021 Luke Shumaker <lukeshu@lukeshu.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package libfastimport
import (
"fmt"
"strconv"
"strings"
"time"
"github.com/pkg/errors"
)
// Ident is a tuple of a commiter's (or author's) name, email, and a
// timestamp with timezone.
//
// BUG(lukeshu): Ident (and ParseIdent) only supports the
// "raw"/"raw-permissive" date format (not "rfc2822" or "now")
type Ident struct {
Name string
Email string
Time time.Time
}
func (ut Ident) String() string {
if ut.Name == "" {
return fmt.Sprintf("<%s> %d %s",
ut.Email,
ut.Time.Unix(),
ut.Time.Format("-0700"))
} else {
return fmt.Sprintf("%s <%s> %d %s",
ut.Name,
ut.Email,
ut.Time.Unix(),
ut.Time.Format("-0700"))
}
}
// ParseIdent parses a string containing an Ident.
//
// The format of this string is
//
// <name> SP LT <email> GT SP <time> SP <offutc>
//
// Where <name> may contain a space, but not "<" or ">"; <time> is an
// integer number of seconds since the UNIX epoch (UTC); <offutc> is
// positive or negative 4-digit offset from UTC (for example, EST
// would be "-0500").
func ParseIdent(str string) (Ident, error) {
ret := Ident{}
lt := strings.IndexAny(str, "<>")
if lt < 0 || str[lt] != '<' {
return ret, errors.Errorf("Missing < in ident string: %v", str)
}
if lt > 0 {
if str[lt-1] != ' ' {
return ret, errors.Errorf("Missing space before < in ident string: %v", str)
}
ret.Name = str[:lt-1]
}
gt := lt + 1 + strings.IndexAny(str[lt+1:], "<>")
if gt < lt+1 || str[gt] != '>' {
return ret, errors.Errorf("Missing > in ident string: %v", str)
}
if str[gt+1] != ' ' {
return ret, errors.Errorf("Missing space after > in ident string: %v", str)
}
ret.Email = str[lt+1 : gt]
strWhen := str[gt+2:]
sp := strings.IndexByte(strWhen, ' ')
if sp < 0 {
return ret, errors.Errorf("missing time zone in when: %v", str)
}
sec, err := strconv.ParseInt(strWhen[:sp], 10, 64)
if err != nil {
return ret, err
}
tzt, err := time.Parse("-0700", strWhen[sp+1:])
if err != nil {
return ret, err
}
ret.Time = time.Unix(sec, 0).In(tzt.Location())
return ret, nil
}
// Mode is a file mode as seen by git.
type Mode uint32 // 18 bits
const (
ModeFil = Mode(0100644) // A regular file
ModeExe = Mode(0100755) // An executable file
ModeSym = Mode(0120000) // A symbolic link
ModeGit = Mode(0160000) // A nested git repository (e.g. submodule)
ModeDir = Mode(0040000) // A directory
)
func (m Mode) String() string {
return fmt.Sprintf("%06o", m)
}
func (m Mode) GoString() string {
return fmt.Sprintf("%07o", m)
}
// Path is a string storing a git path.
type Path string
// PathEscape escapes a path in case it contains special characters.
func PathEscape(path Path) string {
if strings.HasPrefix(string(path), "\"") || strings.ContainsRune(string(path), '\n') {
return "\"" + strings.Replace(strings.Replace(strings.Replace(string(path), "\\", "\\\\", -1), "\"", "\\\"", -1), "\n", "\\n", -1) + "\""
} else {
return string(path)
}
}
// PathUnescape unescapes a quoted path.
func PathUnescape(epath string) Path {
if strings.HasPrefix(epath, "\"") {
return Path(strings.Replace(strings.Replace(strings.Replace(epath[1:len(epath)-1], "\\n", "\n", -1), "\\\"", "\"", -1), "\\\\", "\\", -1))
} else {
return Path(epath)
}
}
// String calls PathEscape on the Path.
func (p Path) String() string {
return PathEscape(p)
}
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