Documentation
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Index ¶
- func Format(body []byte) []byte
- type Adapter
- type Dispenser
- func (d *Dispenser) AllArgs(targets ...*string) bool
- func (d *Dispenser) ArgErr() error
- func (d *Dispenser) Args(targets ...*string) bool
- func (d *Dispenser) Delete() []Token
- func (d *Dispenser) EOFErr() error
- func (d *Dispenser) Err(msg string) error
- func (d *Dispenser) Errf(format string, args ...interface{}) error
- func (d *Dispenser) File() string
- func (d *Dispenser) Line() int
- func (d *Dispenser) Nesting() int
- func (d *Dispenser) NewFromNextSegment() *Dispenser
- func (d *Dispenser) Next() bool
- func (d *Dispenser) NextArg() bool
- func (d *Dispenser) NextBlock(initialNestingLevel int) bool
- func (d *Dispenser) NextLine() bool
- func (d *Dispenser) NextSegment() Segment
- func (d *Dispenser) Prev() bool
- func (d *Dispenser) RemainingArgs() []string
- func (d *Dispenser) Reset()
- func (d *Dispenser) SyntaxErr(expected string) error
- func (d *Dispenser) Token() Token
- func (d *Dispenser) Val() string
- type Segment
- type ServerBlock
- type ServerType
- type Token
- type Unmarshaler
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Adapter ¶
type Adapter struct {
ServerType ServerType
}
Adapter adapts Caddyfile to Caddy JSON.
type Dispenser ¶
type Dispenser struct {
// contains filtered or unexported fields
}
Dispenser is a type that dispenses tokens, similarly to a lexer, except that it can do so with some notion of structure. An empty Dispenser is invalid; call NewDispenser to make a proper instance.
func NewDispenser ¶
NewDispenser returns a Dispenser filled with the given tokens.
func (*Dispenser) AllArgs ¶
AllArgs is like Args, but if there are more argument tokens available than there are targets, false is returned. The number of available argument tokens must match the number of targets exactly to return true.
func (*Dispenser) ArgErr ¶
ArgErr returns an argument error, meaning that another argument was expected but not found. In other words, a line break or open curly brace was encountered instead of an argument.
func (*Dispenser) Args ¶
Args is a convenience function that loads the next arguments (tokens on the same line) into an arbitrary number of strings pointed to in targets. If there are not enough argument tokens available to fill targets, false is returned and the remaining targets are left unchanged. If all the targets are filled, then true is returned.
func (*Dispenser) Delete ¶
Delete deletes the current token and returns the updated slice of tokens. The cursor is not advanced to the next token. Because deletion modifies the underlying slice, this method should only be called if you have access to the original slice of tokens and/or are using the slice of tokens outside this Dispenser instance. If you do not re-assign the slice with the return value of this method, inconsistencies in the token array will become apparent (or worse, hide from you like they did me for 3 and a half freaking hours late one night).
func (*Dispenser) EOFErr ¶
EOFErr returns an error indicating that the dispenser reached the end of the input when searching for the next token.
func (*Dispenser) Line ¶
Line gets the line number of the current token. If there is no token loaded, it returns 0.
func (*Dispenser) Nesting ¶
Nesting returns the current nesting level. Necessary if using NextBlock()
func (*Dispenser) NewFromNextSegment ¶
NewFromNextSegment returns a new dispenser with a copy of the tokens from the current token until the end of the "directive" whether that be to the end of the line or the end of a block that starts at the end of the line; in other words, until the end of the segment.
func (*Dispenser) Next ¶
Next loads the next token. Returns true if a token was loaded; false otherwise. If false, all tokens have been consumed.
func (*Dispenser) NextArg ¶
NextArg loads the next token if it is on the same line and if it is not a block opening (open curly brace). Returns true if an argument token was loaded; false otherwise. If false, all tokens on the line have been consumed except for potentially a block opening. It handles imported tokens correctly.
func (*Dispenser) NextBlock ¶
NextBlock can be used as the condition of a for loop to load the next token as long as it opens a block or is already in a block nested more than initialNestingLevel. In other words, a loop over NextBlock() will iterate all tokens in the block assuming the next token is an open curly brace, until the matching closing brace. The open and closing brace tokens for the outer-most block will be consumed internally and omitted from the iteration.
Proper use of this method looks like this:
for nesting := d.Nesting(); d.NextBlock(nesting); {
}
However, in simple cases where it is known that the Dispenser is new and has not already traversed state by a loop over NextBlock(), this will do:
for d.NextBlock(0) {
}
As with other token parsing logic, a loop over NextBlock() should be contained within a loop over Next(), as it is usually prudent to skip the initial token.
func (*Dispenser) NextLine ¶
NextLine loads the next token only if it is not on the same line as the current token, and returns true if a token was loaded; false otherwise. If false, there is not another token or it is on the same line. It handles imported tokens correctly.
func (*Dispenser) NextSegment ¶
NextSegment returns a copy of the tokens from the current token until the end of the line or block that starts at the end of the line.
func (*Dispenser) Prev ¶
Prev moves to the previous token. It does the inverse of Next(), except this function may decrement the cursor to -1 so that the next call to Next() points to the first token; this allows dispensing to "start over". This method returns true if the cursor ends up pointing to a valid token.
func (*Dispenser) RemainingArgs ¶
RemainingArgs loads any more arguments (tokens on the same line) into a slice and returns them. Open curly brace tokens also indicate the end of arguments, and the curly brace is not included in the return value nor is it loaded.
func (*Dispenser) Reset ¶
func (d *Dispenser) Reset()
Reset sets d's cursor to the beginning, as if this was a new and unused dispenser.
type Segment ¶
type Segment []Token
Segment is a list of tokens which begins with a directive and ends at the end of the directive (either at the end of the line, or at the end of a block it opens).
type ServerBlock ¶
ServerBlock associates any number of keys from the head of the server block with tokens, which are grouped by segments.
func Parse ¶
func Parse(filename string, input []byte) ([]ServerBlock, error)
Parse parses the input just enough to group tokens, in order, by server block. No further parsing is performed. Server blocks are returned in the order in which they appear. Directives that do not appear in validDirectives will cause an error. If you do not want to check for valid directives, pass in nil instead.
Environment variables in {$ENVIRONMENT_VARIABLE} notation will be replaced before parsing begins.
func (ServerBlock) DispenseDirective ¶
func (sb ServerBlock) DispenseDirective(dir string) *Dispenser
DispenseDirective returns a dispenser that contains all the tokens in the server block.
type ServerType ¶
type ServerType interface {
// Setup takes the server blocks which
// contain tokens, as well as options
// (e.g. CLI flags) and creates a Caddy
// config, along with any warnings or
// an error.
Setup([]ServerBlock, map[string]interface{}) (*caddy.Config, []caddyconfig.Warning, error)
}
ServerType is a type that can evaluate a Caddyfile and set up a caddy config.
type Unmarshaler ¶
Unmarshaler is a type that can unmarshal Caddyfile tokens to set itself up for a JSON encoding. The goal of an unmarshaler is not to set itself up for actual use, but to set itself up for being marshaled into JSON. Caddyfile-unmarshaled values will not be used directly; they will be encoded as JSON and then used from that.
Source Files