-safe-string

This commit is contained in:
John Whitington 2018-07-30 13:58:25 +01:00
parent 1635580c73
commit 18075b84ce
4 changed files with 251 additions and 244 deletions

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@ -7,8 +7,8 @@ RESULT = cpdf
ANNOTATE = true
PACKS = camlpdf
OCAMLNCFLAGS = -g -unsafe-string -w -3 -annot
OCAMLBCFLAGS = -g -unsafe-string -w -3 -annot
OCAMLNCFLAGS = -g -safe-string -w -3 -annot
OCAMLBCFLAGS = -g -safe-string -w -3 -annot
OCAMLLDFLAGS = -g
all : native-code native-code-library byte-code-library top htdoc

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@ -1,3 +1,4 @@
%FIXME: Finish and document -dump-attachments.
%FIXME: Mention that OpenAction supersedes PageLayout so use -remove-dict-option to get rid of it
%FIXME: Document new -hard-box option
%FIXME: Document that -upright also shifts the page to 0,0

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@ -961,7 +961,7 @@ struct
let make_output ?(decl = true) ?(nl = false) ?(indent = None)
?(ns_prefix = fun _ ->None) d =
let outs, outc = match d with
| `Channel c -> (output c), (output_char c)
| `Channel c -> (output_substring c), (output_char c)
| `Buffer b -> (Std_buffer.add_substring b), (Std_buffer.add_char b)
| `Fun f ->
let os s p l =

488
xmlm.mli
View File

@ -1,57 +1,57 @@
(*---------------------------------------------------------------------------
Copyright 2007 Daniel C. Bünzli. All rights reserved.
Distributed under a BSD3 license, see license at the end of the file.
%%NAME%% release %%VERSION%%
Copyright (c) 2007 Daniel C. Bünzli. All rights reserved.
Distributed under the ISC license, see terms at the end of the file.
%%NAME%% %%VERSION%%
---------------------------------------------------------------------------*)
(** Streaming XML codec.
(** Streaming XML codec.
A well-formed sequence of {{!signal}signals} represents an
{{:http://www.w3.org/TR/REC-xml}XML} document tree traversal in
depth first order (this has nothing to do with XML
well-formedness). Input pulls a well-formed sequence of signals
from a data source and output pushes a well-formed sequence of
signals to a data destination. Functions are provided to easily
signals to a data destination. Functions are provided to easily
transform sequences of signals to/from arborescent data structures.
Consult the {{!io}features and limitations} and {{!ex}examples}
Consult the {{!io}features and limitations} and {{!ex}examples}
of use.
{e Release %%VERSION%% %%MAINTAINER%% }
{e %%VERSION%% {{:%%PKG_HOMEPAGE%% }homepage}}
{3 References}
{ul
{- Tim Bray.
{e {{:http://www.xml.com/axml/axml.html}The annotated XML Specification}},
1998.}
{- Tim Bray et al.
{- Tim Bray.
{e {{:http://www.xml.com/axml/axml.html}The annotated XML Specification}},
1998.}
{- Tim Bray et al.
{e {{:http://www.w3.org/TR/xml-names11}Namespaces in XML 1.1 (2nd ed.)}},
2006.}} *)
(** {1 Basic types and values} *)
(** The type for character encodings. For [`UTF_16], endianness is
determined from the
determined from the
{{:http://www.unicode.org/unicode/faq/utf_bom.html#BOM}BOM}. *)
type encoding = [
| `UTF_8
| `UTF_16
(** Endianness determined from the
type encoding = [
| `UTF_8
| `UTF_16
(** Endianness determined from the
{{:http://www.unicode.org/unicode/faq/utf_bom.html#BOM}BOM}. *)
| `UTF_16BE
| `UTF_16LE
| `UTF_16BE
| `UTF_16LE
| `ISO_8859_1
| `US_ASCII ]
type dtd = string option
(** The type for the optional
{{:http://www.w3.org/TR/REC-xml/#dt-doctype}DTD}. *)
type name = string * string
type name = string * string
(** The type for attribute and element's
{{:http://www.w3.org/TR/xml-names11/#dt-expname}expanded names}
{{:http://www.w3.org/TR/xml-names11/#dt-expname}expanded names}
[(uri,local)]. An empty [uri] represents a name without a
namespace name, i.e. an unprefixed name
namespace name, i.e. an unprefixed name
that is not under the scope of a default namespace. *)
type attribute = name * string
@ -65,46 +65,69 @@ type signal = [ `Dtd of dtd | `El_start of tag | `El_end | `Data of string ]
to the language of the [doc] grammar :
{[doc ::= `Dtd tree
tree ::= `El_start child `El_end
child ::= `Data | tree | epsilon ]}
child ::= `Data trees | trees
trees ::= tree child | epsilon]}
The [trees] production is used to expresses the fact that there will
never be two consecutive `Data signals in the children of an element.
Input and output deal only with well-formed sequences or
exceptions are raised.
*)
val ns_xml : string
(** Namespace name {{:http://www.w3.org/XML/1998/namespace}value} bound to the
exceptions are raised. However on output consecutive [`Data]
signals are allowed. *)
val ns_xml : string
(** Namespace name {{:http://www.w3.org/XML/1998/namespace}value} bound to the
reserved ["xml"] prefix. *)
val ns_xmlns : string
(** Namespace name {{:http://www.w3.org/2000/xmlns/}value} bound to the
(** Namespace name {{:http://www.w3.org/2000/xmlns/}value} bound to the
reserved ["xmlns"] prefix. *)
val pp_dtd : Format.formatter -> dtd -> unit
(** [pp_dtd ppf dtd] prints an unspecified representation of [dtd] on [ppf]. *)
val pp_name : Format.formatter -> name -> unit
(** [pp_name ppf name] prints an unspecified representation of [name] on
[ppf]. *)
val pp_attribute : Format.formatter -> attribute -> unit
(** [pp_attribute ppf att] prints an unspecified representation of [att] on
[ppf]. *)
val pp_tag : Format.formatter -> tag -> unit
(** [pp_tag ppf tag] prints an unspecified representation of [tag] on
[ppf]. *)
val pp_signal : Format.formatter -> signal -> unit
(** [pp_signal ppf s] prints an unspecified representation of [s] on
[ppf]. *)
(** {1 Input} *)
type pos = int * int
type pos = int * int
(** The type for input positions. Line and column number, both start
with 1. *)
(** The type for input errors. *)
type error = [
| `Max_buffer_size
| `Max_buffer_size
(** Maximal buffer size exceeded ([Sys.max_string_length]). *)
| `Unexpected_eoi
| `Unexpected_eoi
(** Unexpected end of input. *)
| `Malformed_char_stream
| `Malformed_char_stream
(** Malformed underlying character stream. *)
| `Unknown_encoding of string
| `Unknown_encoding of string
(** Unknown encoding. *)
| `Unknown_entity_ref of string
| `Unknown_entity_ref of string
(** Unknown entity reference, {{!inentity} details}. *)
| `Unknown_ns_prefix of string
| `Unknown_ns_prefix of string
(** Unknown namespace prefix {{!inns} details} *)
| `Illegal_char_ref of string
| `Illegal_char_ref of string
(** Illegal character reference. *)
| `Illegal_char_seq of string
| `Illegal_char_seq of string
(** Illegal character sequence. *)
| `Expected_char_seqs of string list * string
(** Expected one of the character sequences in the list but found another. *)
| `Expected_root_element
| `Expected_root_element
(** Expected the document's root element. *) ]
val error_message : error -> string
@ -113,7 +136,7 @@ val error_message : error -> string
exception Error of pos * error
(** Raised on input errors. *)
type source = [
type source = [
| `Channel of in_channel | `String of int * string | `Fun of (unit -> int) ]
(** The type for input sources. For [`String] starts reading at the
given integer position. For [`Fun] the function must return the
@ -123,70 +146,70 @@ type source = [
type input
(** The type for input abstractions. *)
val make_input : ?enc:encoding option -> ?strip:bool ->
?ns:(string -> string option) ->
val make_input : ?enc:encoding option -> ?strip:bool ->
?ns:(string -> string option) ->
?entity: (string -> string option) -> source -> input
(** Returns a new input abstraction reading from the given source.
{ul
{- [enc], character encoding of the document, {{!inenc} details}.
{ul
{- [enc], character encoding of the document, {{!inenc} details}.
Defaults to [None].}
{- [strip], strips whitespace in character data, {{!inwspace} details}.
Defaults to [false].}
Defaults to [false].}
{- [ns] is called to bind undeclared namespace prefixes,
{{!inns} details}. Default returns always [None].}
{- [entity] is called to resolve non predefined entity references,
{{!inentity} details}. Default returns always [None].}} *)
val input : input -> signal
(** Inputs a signal. Repeated invocation of the function with the same
input abstraction will generate a {{!signal}well-formed} sequence
of signals or an {!Error} is raised. Furthermore there will be no
two consecutive [`Data] signals in the sequence and their string
is always non empty.
{b Deprecated} After a well-formed sequence was input another may
is always non empty.
{b Deprecated} After a well-formed sequence was input another may
be input, see {!eoi} and {{!iseq}details}.
{b Raises} {!Error} on input errors. *)
val input_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
val input_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
input -> 'a
(** If the next signal is a :
{ul
{- [`Data] signal, inputs it and invokes [data] with the character data.}
{- [`El_start] signal, inputs the sequence of signals until its
{- [`El_start] signal, inputs the sequence of signals until its
matching [`El_end] and invokes [el] and [data] as follows
{ul
{- [el], is called on each [`El_end] signals with the corresponding
[`El_start] tag and the result of the callback invocation for the
{- [el], is called on each [`El_end] signals with the corresponding
[`El_start] tag and the result of the callback invocation for the
element's children.}
{- [data], is called on each [`Data] signals with the character data.
This function won't be called twice consecutively or with the empty
{- [data], is called on each [`Data] signals with the character data.
This function won't be called twice consecutively or with the empty
string.}}}
{- Other signals, raises [Invalid_argument].}}
{b Raises} {!Error} on input errors and [Invalid_argument]
if the next signal is not [`El_start] or [`Data]. *)
val input_doc_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
val input_doc_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
input -> (dtd * 'a)
(** Same as {!input_tree} but reads a complete {{!signal}well-formed}
sequence of signals.
(** Same as {!input_tree} but reads a complete {{!signal}well-formed}
sequence of signals.
{b Raises} {!Error} on input errors and [Invalid_argument]
if the next signal is not [`Dtd]. *)
val peek : input -> signal
(** Same as {!input} but doesn't remove the signal from the sequence.
{b Raises} {!Error} on input errors. *)
val eoi : input -> bool
(** Returns [true] if the end of input is reached. See {{!iseq}details}.
(** Same as {!input} but doesn't remove the signal from the sequence.
{b Raises} {!Error} on input errors. *)
val pos : input -> pos
val eoi : input -> bool
(** Returns [true] if the end of input is reached. See {{!iseq}details}.
{b Raises} {!Error} on input errors. *)
val pos : input -> pos
(** Current position in the input abstraction. *)
(** {1 Output} *)
@ -194,31 +217,31 @@ val pos : input -> pos
type 'a frag = [ `El of tag * 'a list | `Data of string ]
(** The type for deconstructing data structures of type ['a]. *)
type dest = [ `Channel of out_channel | `Buffer of Buffer.t
type dest = [ `Channel of out_channel | `Buffer of Buffer.t
| `Fun of (int -> unit) ]
(** The type for output destinations. For [`Buffer], the buffer won't
be cleared. For [`Fun] the function is called with the output {e
bytes} as [int]s. *)
type output
(** The type for output abstractions. *)
val make_output : ?decl:bool -> ?nl:bool -> ?indent:int option ->
val make_output : ?decl:bool -> ?nl:bool -> ?indent:int option ->
?ns_prefix:(string -> string option) -> dest -> output
(** Returns a new output abstraction writing to the given destination.
{ul
{ul
{- [decl], if [true] the {{:http://www.w3.org/TR/REC-xml/#NT-XMLDecl} XML
declaration} is output (defaults to [true]).}
{- [nl], if [true] a newline is output when the root's element [`El_end]
{- [nl], if [true] a newline is output when the root's element [`El_end]
signal is output.
Defaults to [false].}
{- [indent], identation behaviour, see {{!outindent} details}. Defaults to
[None].}
{- [ns_prefix], undeclared namespace prefix bindings,
{- [ns_prefix], undeclared namespace prefix bindings,
see {{!outns}details}. Default returns always [None].}} *)
val output : output -> signal -> unit
(** Outputs a signal.
(** Outputs a signal.
{b Deprecated.} After a well-formed sequence of signals was output
a new well-formed sequence can be output.
@ -230,22 +253,22 @@ val output : output -> signal -> unit
val output_depth : output -> int
(** [output_depth o] is [o]'s current element nesting level (undefined
before the first [`El_start] and after the last [`El_end]). *)
val output_tree : ('a -> 'a frag) -> output -> 'a -> unit
(** Outputs signals corresponding to a value by recursively
applying the given value deconstructor.
{b Raises} see {!output}. *)
val output_doc_tree : ('a -> 'a frag) -> output -> (dtd * 'a) -> unit
(** Same as {!output_tree} but outputs a complete {{!signal}well-formed}
val output_doc_tree : ('a -> 'a frag) -> output -> (dtd * 'a) -> unit
(** Same as {!output_tree} but outputs a complete {{!signal}well-formed}
sequence of signals.
{b Raises} see {!output}. *)
(** {1:sto Functorial interface (deprecated)}
(** {1:sto Functorial interface (deprecated)}
{b WARNING.} The functioral interface is deprecated and will be
{b WARNING.} The functioral interface is deprecated and will be
removed.
{!Make} allows client to specify types for strings and internal
@ -258,16 +281,16 @@ type std_buffer = Buffer.t
(** Input signature for strings. *)
module type String = sig
type t
(** The type for strings. *)
val empty : t
(** The empty string. *)
val length : t -> int
(** Returns the length of the string. *)
val append : t -> t -> t
(** Concatenates two strings. *)
@ -277,7 +300,7 @@ module type String = sig
{{:http://www.unicode.org/glossary/#code_point}code point}). *)
val iter : (int -> unit) -> t -> unit
(** Iterates over the unicode
(** Iterates over the unicode
{{:http://www.unicode.org/glossary/#code_point}code point}
of the given string. *)
@ -297,129 +320,129 @@ module type Buffer = sig
type string
(** The type for strings. *)
type t
type t
(** The type for buffers. *)
exception Full
(** Raised if the buffer cannot be grown. *)
val create : int -> t
(** Creates a buffer of the given size. *)
val add_uchar : t -> int -> unit
(** Adds the given (guaranteed valid) unicode
{{:http://www.unicode.org/glossary/#code_point}code point} to a
buffer.
buffer.
{b Raises} {!Full} if the buffer cannot be grown. *)
val clear : t -> unit
(** Clears the buffer. *)
val contents : t -> string
(** Returns the buffer contents. *)
val length : t -> int
(** Returns the number of characters contained in the buffer. *)
end
(** Output signature of {!Make}. *)
module type S = sig
(** {1 Basic types and values} *)
module type S = sig
type string
type encoding = [
(** {1 Basic types and values} *)
type string
type encoding = [
| `UTF_8 | `UTF_16 | `UTF_16BE | `UTF_16LE | `ISO_8859_1| `US_ASCII ]
type dtd = string option
type name = string * string
type name = string * string
type attribute = name * string
type tag = name * attribute list
type signal = [ `Dtd of dtd | `El_start of tag | `El_end | `Data of string ]
val ns_xml : string
val ns_xmlns : string
(** {1 Input} *)
type pos = int * int
val ns_xml : string
val ns_xmlns : string
(** {1 Input} *)
type pos = int * int
type error = [
| `Max_buffer_size
| `Max_buffer_size
| `Unexpected_eoi
| `Malformed_char_stream
| `Unknown_encoding of string
| `Unknown_entity_ref of string
| `Unknown_ns_prefix of string
| `Illegal_char_ref of string
| `Illegal_char_seq of string
| `Unknown_entity_ref of string
| `Unknown_ns_prefix of string
| `Illegal_char_ref of string
| `Illegal_char_seq of string
| `Expected_char_seqs of string list * string
| `Expected_root_element ]
exception Error of pos * error
val error_message : error -> string
type source = [
| `Channel of in_channel
type source = [
| `Channel of in_channel
| `String of int * std_string
| `Fun of (unit -> int) ]
type input
val make_input : ?enc:encoding option -> ?strip:bool ->
?ns:(string -> string option) ->
val make_input : ?enc:encoding option -> ?strip:bool ->
?ns:(string -> string option) ->
?entity: (string -> string option) -> source -> input
val input : input -> signal
val input_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
val input_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
input -> 'a
val input_doc_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
val input_doc_tree : el:(tag -> 'a list -> 'a) -> data:(string -> 'a) ->
input -> (dtd * 'a)
val peek : input -> signal
val eoi : input -> bool
val pos : input -> pos
val pos : input -> pos
(** {1 Output} *)
type 'a frag = [ `El of tag * 'a list | `Data of string ]
type dest = [
type dest = [
| `Channel of out_channel | `Buffer of std_buffer | `Fun of (int -> unit) ]
type output
val make_output : ?decl:bool -> ?nl:bool -> ?indent:int option ->
val make_output : ?decl:bool -> ?nl:bool -> ?indent:int option ->
?ns_prefix:(string -> string option) -> dest -> output
val output_depth : output -> int
val output : output -> signal -> unit
val output_tree : ('a -> 'a frag) -> output -> 'a -> unit
val output_doc_tree : ('a -> 'a frag) -> output -> (dtd * 'a) -> unit
val output_doc_tree : ('a -> 'a frag) -> output -> (dtd * 'a) -> unit
end
(** Functor building streaming XML IO with the given strings and buffers. *)
module Make (String : String) (Buffer : Buffer with type string = String.t) : S
with type string = String.t
(** {1:io Features and limitations}
The module assumes strings are immutable, thus strings
the client gives or receives {e during} the input and output process
the client gives or receives {e during} the input and output process
must not be modified.
{2:input Input}
{3:inenc Encoding}
{3:inenc Encoding}
The parser supports ASCII, US-ASCII,
The parser supports ASCII, US-ASCII,
{{:http://www.faqs.org/rfcs/rfc3629.html} UTF-8},
{{:http://www.faqs.org/rfcs/rfc2781.html} UTF-16},
{{:http://www.faqs.org/rfcs/rfc2781.html} UTF-16LE},
{{:http://www.faqs.org/rfcs/rfc2781.html} UTF-16BE} and
{{:http://anubis.dkuug.dk/JTC1/SC2/WG3/docs/n411.pdf}ISO-8559-1}
{{:http://anubis.dkuug.dk/JTC1/SC2/WG3/docs/n411.pdf}ISO-8559-1}
(Latin-1) encoded documents. But strings returned by
the library are {b always} UTF-8 encoded.
the library are {b always} UTF-8 encoded.
The encoding can be specified explicitly using the optional
argument [enc]. Otherwise the parser uses UTF-16 or UTF-8 if there is a
{{:http://www.unicode.org/unicode/faq/utf_bom.html#BOM}BOM} at the
@ -431,8 +454,8 @@ module Make (String : String) (Buffer : Buffer with type string = String.t) : S
The parser performs
{{:http://www.w3.org/TR/REC-xml/#AVNormalize}attribute data
normalization} on {e every} attribute data. This means that
attribute data does not have leading and trailling white space and that
any white space is collapsed and transformed to a single space
attribute data does not have leading and trailling white space and that
any white space is collapsed and transformed to a single space
character ([U+0020]).
White space handling of character data depends on the [strip]
@ -461,9 +484,9 @@ module Make (String : String) (Buffer : Buffer with type string = String.t) : S
[(Xmlm.ns_xmlns, "ex")].
Regarding constraints on the usage of the {i xml} and {i xmlns}
prefixes by documents, the parser does not report errors on violations
prefixes by documents, the parser does not report errors on violations
of the {i must} constraints listed in
{{:http://www.w3.org/TR/xml-names11/#xmlReserved}this paragraph}.
{{:http://www.w3.org/TR/xml-names11/#xmlReserved}this paragraph}.
{3:inentity Character and entity references}
@ -475,14 +498,14 @@ module Make (String : String) (Buffer : Buffer with type string = String.t) : S
replacement character data. The replacement data is {e not}
analysed for further references, it is added to the data as such
modulo white space stripping. If [entity] returns [None] the error
[`Unknown_entity_ref] is returned.
[`Unknown_entity_ref] is returned.
{3:iseq Sequences of documents (deprecated)}
{b WARNING.} This feature is deprecated and will be removed.
When a well-formed sequence of signals is input, no data is consumed beyond
the closing ['>'] of the document's root element.
the closing ['>'] of the document's root element.
If you want to parse a document as
{{:http://www.w3.org/TR/REC-xml/#NT-document}defined} in the XML
@ -503,32 +526,32 @@ module Make (String : String) (Buffer : Buffer with type string = String.t) : S
{3:inmisc Miscellaneous}
{ul
{- Parses the more liberal and simpler XML 1.1
{- Parses the more liberal and simpler XML 1.1
{{:http://www.w3.org/TR/xml11/#NT-Name}Name} definition (minus [':'] because
of namespaces).}
{- The {{:http://www.w3.org/TR/REC-xml/#dt-doctype}DTD} is parsed
roughly (no guarantee it is well formed) and its information is ignored.}
{- The parser drops
{{:http://www.w3.org/TR/REC-xml/#dt-comment}comments},
{{:http://www.w3.org/TR/REC-xml/#dt-pi}processing instructions}, and
{- The parser drops
{{:http://www.w3.org/TR/REC-xml/#dt-comment}comments},
{{:http://www.w3.org/TR/REC-xml/#dt-pi}processing instructions}, and
{{:http://www.w3.org/TR/REC-xml/#sec-rmd}standalone declaration}.}
{- Element attributes are not checked for uniqueness.}
{- Attribute and character data chunks are limited by
[Sys.max_string_length].
{- Attribute and character data chunks are limited by
[Sys.max_string_length].
The error [`Max_buffer_size] is raised if the limit is hit.}
{- Tail recursive.}
{- Non validating.}
}
{2:output Output}
{3:outenc Encoding}
{2:output Output}
{3:outenc Encoding}
Outputs only {{:http://www.faqs.org/rfcs/rfc3629.html} UTF-8}
encoded documents. Strings given to
output functions {b must be} UTF-8 encoded, no checks are
performed. Unicode characters that are not legal XML
{{:http://www.w3.org/TR/REC-xml/#NT-Char}characters} are replaced
by the {{:http://unicode.org/glossary/#replacement_character}Unicode
by the {{:http://unicode.org/glossary/#replacement_character}Unicode
replacement character}.
{3:outns Namespaces}
@ -537,15 +560,15 @@ module Make (String : String) (Buffer : Buffer with type string = String.t) : S
{{:http://www.w3.org/TR/xml-names11/#dt-expname}expanded names}.
Expanded names are automatically converted to
{{:http://www.w3.org/TR/xml-names11/#dt-qualname}qualified
names} by the output abstraction. There is no particular api to specify
prefixes and default namespaces,
names} by the output abstraction. There is no particular api to specify
prefixes and default namespaces,
the actual result depends solely on the output
of attributes belonging to the {!ns_xmlns} namespace. For example to set
the default namespace of an element to {i http://example.org/myns},
of attributes belonging to the {!ns_xmlns} namespace. For example to set
the default namespace of an element to {i http://example.org/myns},
use the following attribute :
{[(* xmlns='http://example.org/myns' *)
let default_ns = (Xmlm.ns_xmlns, "xmlns"), "http://example.org/myns"]}
To bind the prefix ["ex"] to {i http://example.org/ex}, use the
To bind the prefix ["ex"] to {i http://example.org/ex}, use the
following attribute :
{[(* xmlns:ex='http://example.org/ex' *)
let ex_ns = (Xmlm.ns_xmlns, "ex"), "http://example.org/ex"]}
@ -556,7 +579,7 @@ let ex_ns = (Xmlm.ns_xmlns, "ex"), "http://example.org/ex"]}
The callback [ns_prefix] of an output abstraction can be used to
give a prefix to a namespace name lacking a prefix binding in the
current output scope. Given a namespace name the function must return
current output scope. Given a namespace name the function must return
the prefix to use. Note that this
will {b not} add any namespace declaration attribute to the
output. If the function returns [None], {!output} will raise
@ -571,7 +594,7 @@ let ex_ns = (Xmlm.ns_xmlns, "ex"), "http://example.org/ex"]}
line) and nested elements are indented with [c] space
characters.
{3:oseq Sequences of documents (deprecated)}
{3:oseq Sequences of documents (deprecated)}
{b WARNING.} This feature is deprecated and will be removed.
@ -582,44 +605,44 @@ let ex_ns = (Xmlm.ns_xmlns, "ex"), "http://example.org/ex"]}
{3:outmisc Miscellaneous}
{ul
{- Output on a channel does not flush it.}
{- In attribute and character data you provide, markup
delimiters ['<'],['>'],['&'], and ['\"'] are
automatically escaped to
{- In attribute and character data you provide, markup
delimiters ['<'],['>'],['&'], and ['\"'] are
automatically escaped to
{{:http://www.w3.org/TR/REC-xml/#sec-predefined-ent}predefined
entities}.}
{- No checks are peformed on the prefix and local part of output
names to verify they are
{{:http://www.w3.org/TR/xml-names11/#NT-NCName}NCName}s.
For example using the tag name [("","dip d")] will produce
For example using the tag name [("","dip d")] will produce
a non well-formed document because of the space character.}
{- Tail recursive.}}
{2 Tips}
{ul
{2 Tips}
{ul
{- The best options to do an input/output round trip
and preserve as much information as possible is to
and preserve as much information as possible is to
input with [strip = false] and output with [indent = None].}
{- Complete whitespace control on output is achieved
{- Complete whitespace control on output is achieved
with [indent = None] and suitable [`Data] signals}}
{1:ex Examples}
{1:ex Examples}
{2:exseq Sequential processing}
{2:exseq Sequential processing}
Sequential processing has the advantage that you don't need to get
the whole document tree in memory to process it.
The following function reads a {e single} document on an
input channel and outputs it.
{[let id ic oc =
let i = Xmlm.make_input (`Channel ic) in
let o = Xmlm.make_output (`Channel oc) in
let rec pull i o depth =
{[let id ic oc =
let i = Xmlm.make_input (`Channel ic) in
let o = Xmlm.make_output (`Channel oc) in
let rec pull i o depth =
Xmlm.output o (Xmlm.peek i);
match Xmlm.input i with
match Xmlm.input i with
| `El_start _ -> pull i o (depth + 1)
| `El_end -> if depth = 1 then () else pull i o (depth - 1)
| `Data _ -> pull i o depth
| `Data _ -> pull i o depth
| `Dtd _ -> assert false
in
Xmlm.output o (Xmlm.input i); (* `Dtd *)
@ -628,32 +651,32 @@ let ex_ns = (Xmlm.ns_xmlns, "ex"), "http://example.org/ex"]}
The following function reads a {e sequence} of documents on an
input channel and outputs it.
{[let id_seq ic oc =
let i = Xmlm.make_input (`Channel ic) in
let o = Xmlm.make_output ~nl:true (`Channel oc) in
{[let id_seq ic oc =
let i = Xmlm.make_input (`Channel ic) in
let o = Xmlm.make_output ~nl:true (`Channel oc) in
while not (Xmlm.eoi i) do Xmlm.output o (Xmlm.input i) done]}
The following function reads a {e sequence} of documents on the
The following function reads a {e sequence} of documents on the
input channel. In each document's tree it prunes non root elements
whose name belongs to [prune_list].
{[let prune_docs prune_list ic oc =
{[let prune_docs prune_list ic oc =
let i = Xmlm.make_input (`Channel ic) in
let o = Xmlm.make_output ~nl:true (`Channel oc) in
let copy i o = Xmlm.output o (Xmlm.input i) in
let prune (name, _) = List.mem name prune_list in
let rec process i o d =
let rec process i o d =
let rec skip i d = match Xmlm.input i with
| `El_start _ -> skip i (d + 1)
| `El_end -> if d = 1 then () else skip i (d - 1)
| s -> skip i d
in
match Xmlm.peek i with
match Xmlm.peek i with
| `El_start tag when prune tag -> skip i 0; process i o d
| `El_start _ -> copy i o; process i o (d + 1)
| `El_end -> copy i o; if d = 0 then () else process i o (d - 1)
| `Data _ -> copy i o; process i o d
| `Dtd _ -> assert false
in
let rec docs i o =
let rec docs i o =
copy i o; (* `Dtd *)
copy i o; (* root start *)
process i o 0;
@ -661,24 +684,24 @@ let ex_ns = (Xmlm.ns_xmlns, "ex"), "http://example.org/ex"]}
in
docs i o]}
{2:extree Tree processing}
{2:extree Tree processing}
A document's sequence of signals can be easily converted
to an arborescent data structure. Assume your trees are defined by :
{[type tree = E of Xmlm.tag * tree list | D of string]}
The following functions input/output xml documents from/to abstractions
The following functions input/output xml documents from/to abstractions
as value of type [tree].
{[let in_tree i =
{[let in_tree i =
let el tag childs = E (tag, childs) in
let data d = D d in
Xmlm.input_doc_tree ~el ~data i
let out_tree o t =
let out_tree o t =
let frag = function
| E (tag, childs) -> `El (tag, childs)
| D d -> `Data d
| E (tag, childs) -> `El (tag, childs)
| D d -> `Data d
in
Xmlm.output_doc_tree frag o t]}
Xmlm.output_doc_tree frag o t]}
{2:exrow Tabular data processing}
@ -696,7 +719,7 @@ let out_tree o t =
A bureaucrat contains the following elements, in order.
{ul {- <name> its name (mandatory, string).}
{- <surname> its surname (mandatory, string).}
{- <honest> present iff he implemented one of its spec
{- <honest> present iff he implemented one of its spec
(optional, empty).}
{- <obfuscation_level> its grade on the
open scale of obfuscation (mandatory, float).}
@ -704,25 +727,25 @@ let out_tree o t =
worked on.}}}}}}
In OCaml we represent a W3C bureaucrat by this type :
{[type w3c_bureaucrat = {
name : string;
surname : string;
honest : bool;
{[type w3c_bureaucrat = {
name : string;
surname : string;
honest : bool;
obfuscation_level : float;
trs : string list; }]}
The following functions input and output W3C bureaucrats as lists
of values of type [w3c_bureaucrat].
{[let in_w3c_bureaucrats src =
{[let in_w3c_bureaucrats src =
let i = Xmlm.make_input ~strip:true src in
let tag n = ("", n), [] in
let error () = invalid_arg "parse error" in
let accept s i = if Xmlm.input i = s then () else error () in
let rec i_seq el acc i = match Xmlm.peek i with
let rec i_seq el acc i = match Xmlm.peek i with
| `El_start _ -> i_seq el ((el i) :: acc) i
| `El_end -> List.rev acc
| _ -> error ()
in
let i_el n i =
let i_el n i =
accept (`El_start (tag n)) i;
let d = match Xmlm.peek i with
| `Data d -> ignore (Xmlm.input i); d
@ -732,7 +755,7 @@ let out_tree o t =
accept (`El_end) i;
d
in
let i_bureaucrat i =
let i_bureaucrat i =
try
accept (`El_start (tag "bureaucrat")) i;
let name = i_el "name" i in
@ -744,7 +767,7 @@ let out_tree o t =
let obf = float_of_string (i_el "obfuscation_level" i) in
let trs = i_seq (i_el "tr") [] i in
accept (`El_end) i;
{ name = name; surname = surname; honest = honest;
{ name = name; surname = surname; honest = honest;
obfuscation_level = obf; trs = trs }
with
| Failure _ -> error () (* float_of_string *)
@ -756,16 +779,16 @@ let out_tree o t =
if not (Xmlm.eoi i) then invalid_arg "more than one document";
bl
let out_w3c_bureaucrats dst bl =
let out_w3c_bureaucrats dst bl =
let tag n = ("", n), [] in
let o = Xmlm.make_output ~nl:true ~indent:(Some 2) dst in
let out = Xmlm.output o in
let o_el n d =
out (`El_start (tag n));
if d <> "" then out (`Data d);
out `El_end
let o_el n d =
out (`El_start (tag n));
if d <> "" then out (`Data d);
out `El_end
in
let o_bureaucrat b =
let o_bureaucrat b =
out (`El_start (tag "bureaucrat"));
o_el "name" b.name;
o_el "surname" b.surname;
@ -781,34 +804,17 @@ let out_w3c_bureaucrats dst bl =
*)
(*---------------------------------------------------------------------------
Copyright 2007 Daniel C. Bünzli
All rights reserved.
Copyright (c) 2007 Daniel C. Bünzli
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the
distribution.
3. Neither the name of Daniel C. Bünzli nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
---------------------------------------------------------------------------*)