mirror of
https://codeberg.org/forgejo/forgejo.git
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219 lines
7.5 KiB
Go
219 lines
7.5 KiB
Go
// +build go1.6
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// Copyright 2014 Unknwon
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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// Package ini provides INI file read and write functionality in Go.
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package ini
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import (
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"bytes"
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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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"regexp"
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"runtime"
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)
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const (
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// Name for default section. You can use this constant or the string literal.
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// In most of cases, an empty string is all you need to access the section.
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DEFAULT_SECTION = "DEFAULT"
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// Maximum allowed depth when recursively substituing variable names.
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_DEPTH_VALUES = 99
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_VERSION = "1.42.0"
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)
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// Version returns current package version literal.
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func Version() string {
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return _VERSION
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}
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var (
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// Delimiter to determine or compose a new line.
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// This variable will be changed to "\r\n" automatically on Windows
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// at package init time.
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LineBreak = "\n"
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// Place custom spaces when PrettyFormat and PrettyEqual are both disabled
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DefaultFormatLeft = ""
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DefaultFormatRight = ""
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// Variable regexp pattern: %(variable)s
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varPattern = regexp.MustCompile(`%\(([^\)]+)\)s`)
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// Indicate whether to align "=" sign with spaces to produce pretty output
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// or reduce all possible spaces for compact format.
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PrettyFormat = true
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// Place spaces around "=" sign even when PrettyFormat is false
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PrettyEqual = false
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// Explicitly write DEFAULT section header
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DefaultHeader = false
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// Indicate whether to put a line between sections
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PrettySection = true
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)
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func init() {
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if runtime.GOOS == "windows" {
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LineBreak = "\r\n"
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}
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}
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func inSlice(str string, s []string) bool {
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for _, v := range s {
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if str == v {
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return true
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}
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}
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return false
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}
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// dataSource is an interface that returns object which can be read and closed.
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type dataSource interface {
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ReadCloser() (io.ReadCloser, error)
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}
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// sourceFile represents an object that contains content on the local file system.
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type sourceFile struct {
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name string
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}
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func (s sourceFile) ReadCloser() (_ io.ReadCloser, err error) {
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return os.Open(s.name)
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}
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// sourceData represents an object that contains content in memory.
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type sourceData struct {
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data []byte
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}
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func (s *sourceData) ReadCloser() (io.ReadCloser, error) {
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return ioutil.NopCloser(bytes.NewReader(s.data)), nil
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}
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// sourceReadCloser represents an input stream with Close method.
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type sourceReadCloser struct {
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reader io.ReadCloser
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}
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func (s *sourceReadCloser) ReadCloser() (io.ReadCloser, error) {
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return s.reader, nil
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}
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func parseDataSource(source interface{}) (dataSource, error) {
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switch s := source.(type) {
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case string:
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return sourceFile{s}, nil
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case []byte:
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return &sourceData{s}, nil
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case io.ReadCloser:
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return &sourceReadCloser{s}, nil
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default:
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return nil, fmt.Errorf("error parsing data source: unknown type '%s'", s)
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}
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}
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type LoadOptions struct {
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// Loose indicates whether the parser should ignore nonexistent files or return error.
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Loose bool
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// Insensitive indicates whether the parser forces all section and key names to lowercase.
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Insensitive bool
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// IgnoreContinuation indicates whether to ignore continuation lines while parsing.
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IgnoreContinuation bool
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// IgnoreInlineComment indicates whether to ignore comments at the end of value and treat it as part of value.
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IgnoreInlineComment bool
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// SkipUnrecognizableLines indicates whether to skip unrecognizable lines that do not conform to key/value pairs.
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SkipUnrecognizableLines bool
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// AllowBooleanKeys indicates whether to allow boolean type keys or treat as value is missing.
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// This type of keys are mostly used in my.cnf.
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AllowBooleanKeys bool
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// AllowShadows indicates whether to keep track of keys with same name under same section.
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AllowShadows bool
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// AllowNestedValues indicates whether to allow AWS-like nested values.
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// Docs: http://docs.aws.amazon.com/cli/latest/topic/config-vars.html#nested-values
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AllowNestedValues bool
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// AllowPythonMultilineValues indicates whether to allow Python-like multi-line values.
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// Docs: https://docs.python.org/3/library/configparser.html#supported-ini-file-structure
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// Relevant quote: Values can also span multiple lines, as long as they are indented deeper
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// than the first line of the value.
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AllowPythonMultilineValues bool
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// SpaceBeforeInlineComment indicates whether to allow comment symbols (\# and \;) inside value.
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// Docs: https://docs.python.org/2/library/configparser.html
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// Quote: Comments may appear on their own in an otherwise empty line, or may be entered in lines holding values or section names.
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// In the latter case, they need to be preceded by a whitespace character to be recognized as a comment.
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SpaceBeforeInlineComment bool
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// UnescapeValueDoubleQuotes indicates whether to unescape double quotes inside value to regular format
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// when value is surrounded by double quotes, e.g. key="a \"value\"" => key=a "value"
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UnescapeValueDoubleQuotes bool
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// UnescapeValueCommentSymbols indicates to unescape comment symbols (\# and \;) inside value to regular format
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// when value is NOT surrounded by any quotes.
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// Note: UNSTABLE, behavior might change to only unescape inside double quotes but may noy necessary at all.
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UnescapeValueCommentSymbols bool
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// UnparseableSections stores a list of blocks that are allowed with raw content which do not otherwise
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// conform to key/value pairs. Specify the names of those blocks here.
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UnparseableSections []string
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// KeyValueDelimiters is the sequence of delimiters that are used to separate key and value. By default, it is "=:".
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KeyValueDelimiters string
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// PreserveSurroundedQuote indicates whether to preserve surrounded quote (single and double quotes).
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PreserveSurroundedQuote bool
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}
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func LoadSources(opts LoadOptions, source interface{}, others ...interface{}) (_ *File, err error) {
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sources := make([]dataSource, len(others)+1)
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sources[0], err = parseDataSource(source)
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if err != nil {
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return nil, err
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}
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for i := range others {
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sources[i+1], err = parseDataSource(others[i])
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if err != nil {
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return nil, err
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}
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}
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f := newFile(sources, opts)
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if err = f.Reload(); err != nil {
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return nil, err
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}
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return f, nil
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}
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// Load loads and parses from INI data sources.
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// Arguments can be mixed of file name with string type, or raw data in []byte.
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// It will return error if list contains nonexistent files.
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func Load(source interface{}, others ...interface{}) (*File, error) {
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return LoadSources(LoadOptions{}, source, others...)
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}
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// LooseLoad has exactly same functionality as Load function
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// except it ignores nonexistent files instead of returning error.
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func LooseLoad(source interface{}, others ...interface{}) (*File, error) {
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return LoadSources(LoadOptions{Loose: true}, source, others...)
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}
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// InsensitiveLoad has exactly same functionality as Load function
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// except it forces all section and key names to be lowercased.
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func InsensitiveLoad(source interface{}, others ...interface{}) (*File, error) {
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return LoadSources(LoadOptions{Insensitive: true}, source, others...)
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}
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// ShadowLoad has exactly same functionality as Load function
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// except it allows have shadow keys.
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func ShadowLoad(source interface{}, others ...interface{}) (*File, error) {
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return LoadSources(LoadOptions{AllowShadows: true}, source, others...)
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}
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