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authorKristaps Dzonsons <kristaps@bsd.lv>2010-05-25 21:38:05 +0000
committerKristaps Dzonsons <kristaps@bsd.lv>2010-05-25 21:38:05 +0000
commitf6fd370faac1c5b408f7a40c9ba6de38b855ecda (patch)
tree8a8b215a648197abf3194c147700cbc80b71d3f7 /mdoc.3
parent7f2fc48bcc66c32b8872bbf5def95f24bafcf2ff (diff)
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Clean-up: new-sentence, new-line for mdoc.3.
Clean-up: removed CAVEATS section (this should be either in the TODO file or in mdoc.7 documenting mandoc incompatibilities). Clean-up: alpha-ordered `Nm' and section headers.
Diffstat (limited to 'mdoc.3')
-rw-r--r--mdoc.3168
1 files changed, 61 insertions, 107 deletions
diff --git a/mdoc.3 b/mdoc.3
index 22087afb..3bcce298 100644
--- a/mdoc.3
+++ b/mdoc.3
@@ -1,4 +1,4 @@
-.\" $Id: mdoc.3,v 1.37 2010/02/17 19:22:01 kristaps Exp $
+.\" $Id: mdoc.3,v 1.38 2010/05/25 21:38:05 kristaps Exp $
.\"
.\" Copyright (c) 2009-2010 Kristaps Dzonsons <kristaps@bsd.lv>
.\"
@@ -14,48 +14,44 @@
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: February 17 2010 $
+.Dd $Mdocdate: May 25 2010 $
.Dt MDOC 3
.Os
-.\" SECTION
.Sh NAME
.Nm mdoc_alloc ,
-.Nm mdoc_parseln ,
.Nm mdoc_endparse ,
-.Nm mdoc_node ,
-.Nm mdoc_meta ,
.Nm mdoc_free ,
+.Nm mdoc_meta ,
+.Nm mdoc_node ,
+.Nm mdoc_parseln ,
.Nm mdoc_reset
.Nd mdoc macro compiler library
-.\" SECTION
.Sh SYNOPSIS
+.In mandoc.h
.In mdoc.h
.Vt extern const char * const * mdoc_macronames;
.Vt extern const char * const * mdoc_argnames;
.Ft "struct mdoc *"
-.Fn mdoc_alloc "void *data" "int pflags" "const struct mdoc_cb *cb"
+.Fn mdoc_alloc "void *data" "int pflags" "mandocmsg msgs"
.Ft int
-.Fn mdoc_reset "struct mdoc *mdoc"
+.Fn mdoc_endparse "struct mdoc *mdoc"
.Ft void
.Fn mdoc_free "struct mdoc *mdoc"
-.Ft int
-.Fn mdoc_parseln "struct mdoc *mdoc" "int line" "char *buf"
-.Ft "const struct mdoc_node *"
-.Fn mdoc_node "const struct mdoc *mdoc"
.Ft "const struct mdoc_meta *"
.Fn mdoc_meta "const struct mdoc *mdoc"
+.Ft "const struct mdoc_node *"
+.Fn mdoc_node "const struct mdoc *mdoc"
.Ft int
-.Fn mdoc_endparse "struct mdoc *mdoc"
-.\" SECTION
+.Fn mdoc_parseln "struct mdoc *mdoc" "int line" "char *buf"
+.Ft int
+.Fn mdoc_reset "struct mdoc *mdoc"
.Sh DESCRIPTION
The
.Nm mdoc
library parses lines of
.Xr mdoc 7
-input (and
-.Em only
-mdoc) into an abstract syntax tree (AST).
-.\" PARAGRAPH
+input
+into an abstract syntax tree (AST).
.Pp
In general, applications initiate a parsing sequence with
.Fn mdoc_alloc ,
@@ -72,20 +68,20 @@ then free all allocated memory with
The
.Fn mdoc_reset
function may be used in order to reset the parser for another input
-sequence. See the
+sequence.
+See the
.Sx EXAMPLES
-section for a full example.
-.\" PARAGRAPH
+section for a simple example.
.Pp
This section further defines the
.Sx Types ,
.Sx Functions
and
.Sx Variables
-available to programmers. Following that, the
+available to programmers.
+Following that, the
.Sx Abstract Syntax Tree
section documents the output tree.
-.\" SUBSECTION
.Ss Types
Both functions (see
.Sx Functions )
@@ -93,30 +89,27 @@ and variables (see
.Sx Variables )
may use the following types:
.Bl -ohang
-.\" LIST-ITEM
.It Vt struct mdoc
An opaque type defined in
.Pa mdoc.c .
Its values are only used privately within the library.
-.\" LIST-ITEM
-.It Vt struct mdoc_cb
-A set of message callbacks defined in
-.Pa mdoc.h .
-.\" LIST-ITEM
.It Vt struct mdoc_node
-A parsed node. Defined in
+A parsed node.
+Defined in
.Pa mdoc.h .
See
.Sx Abstract Syntax Tree
for details.
+.It Vt mandocmsg
+A function callback type defined in
+.Pa mandoc.h .
.El
-.\" SUBSECTION
.Ss Functions
Function descriptions follow:
.Bl -ohang
-.\" LIST-ITEM
.It Fn mdoc_alloc
-Allocates a parsing structure. The
+Allocates a parsing structure.
+The
.Fa data
pointer is passed to callbacks in
.Fa cb ,
@@ -125,63 +118,62 @@ The
.Fa pflags
arguments are defined in
.Pa mdoc.h .
-Returns NULL on failure. If non-NULL, the pointer must be freed with
+Returns NULL on failure.
+If non-NULL, the pointer must be freed with
.Fn mdoc_free .
-.\" LIST-ITEM
.It Fn mdoc_reset
-Reset the parser for another parse routine. After its use,
+Reset the parser for another parse routine.
+After its use,
.Fn mdoc_parseln
-behaves as if invoked for the first time. If it returns 0, memory could
-not be allocated.
-.\" LIST-ITEM
+behaves as if invoked for the first time.
+If it returns 0, memory could not be allocated.
.It Fn mdoc_free
-Free all resources of a parser. The pointer is no longer valid after
-invocation.
-.\" LIST-ITEM
+Free all resources of a parser.
+The pointer is no longer valid after invocation.
.It Fn mdoc_parseln
-Parse a nil-terminated line of input. This line should not contain the
-trailing newline. Returns 0 on failure, 1 on success. The input buffer
+Parse a nil-terminated line of input.
+This line should not contain the trailing newline.
+Returns 0 on failure, 1 on success.
+The input buffer
.Fa buf
is modified by this function.
-.\" LIST-ITEM
.It Fn mdoc_endparse
-Signals that the parse is complete. Note that if
+Signals that the parse is complete.
+Note that if
.Fn mdoc_endparse
is called subsequent to
.Fn mdoc_node ,
-the resulting tree is incomplete. Returns 0 on failure, 1 on success.
-.\" LIST-ITEM
+the resulting tree is incomplete.
+Returns 0 on failure, 1 on success.
.It Fn mdoc_node
-Returns the first node of the parse. Note that if
+Returns the first node of the parse.
+Note that if
.Fn mdoc_parseln
or
.Fn mdoc_endparse
return 0, the tree will be incomplete.
.It Fn mdoc_meta
-Returns the document's parsed meta-data. If this information has not
-yet been supplied or
+Returns the document's parsed meta-data.
+If this information has not yet been supplied or
.Fn mdoc_parseln
or
.Fn mdoc_endparse
return 0, the data will be incomplete.
.El
-.\" SUBSECTION
.Ss Variables
The following variables are also defined:
.Bl -ohang
-.\" LIST-ITEM
.It Va mdoc_macronames
An array of string-ified token names.
-.\" LIST-ITEM
.It Va mdoc_argnames
An array of string-ified token argument names.
.El
-.\" SUBSECTION
.Ss Abstract Syntax Tree
The
.Nm
functions produce an abstract syntax tree (AST) describing input in a
-regular form. It may be reviewed at any time with
+regular form.
+It may be reviewed at any time with
.Fn mdoc_nodes ;
however, if called before
.Fn mdoc_endparse ,
@@ -190,7 +182,6 @@ or after
or
.Fn mdoc_parseln
fail, it may be incomplete.
-.\" PARAGRAPH
.Pp
This AST is governed by the ontological
rules dictated in
@@ -201,14 +192,14 @@ elements described in
.Xr mdoc 7
are described simply as
.Qq elements .
-.\" PARAGRAPH
.Pp
The AST is composed of
.Vt struct mdoc_node
nodes with block, head, body, element, root and text types as declared
by the
.Va type
-field. Each node also provides its parse point (the
+field.
+Each node also provides its parse point (the
.Va line ,
.Va sec ,
and
@@ -220,13 +211,11 @@ fields), its position in the tree (the
and
.Va prev
fields) and some type-specific data.
-.\" PARAGRAPH
.Pp
The tree itself is arranged according to the following normal form,
where capitalised non-terminals represent nodes.
.Pp
.Bl -tag -width "ELEMENTXX" -compact
-.\" LIST-ITEM
.It ROOT
\(<- mnode+
.It mnode
@@ -244,17 +233,16 @@ where capitalised non-terminals represent nodes.
.It TAIL
\(<- mnode+
.It TEXT
-\(<- [[:alpha:]]*
+\(<- [[:printable:],0x1e]*
.El
-.\" PARAGRAPH
.Pp
Of note are the TEXT nodes following the HEAD, BODY and TAIL nodes of
-the BLOCK production. These refer to punctuation marks. Furthermore,
-although a TEXT node will generally have a non-zero-length string, in
-the specific case of
+the BLOCK production.
+These refer to punctuation marks.
+Furthermore, although a TEXT node will generally have a non-zero-length
+string, in the specific case of
.Sq \&.Bd \-literal ,
an empty line will produce a zero-length string.
-.\" SECTION
.Sh EXAMPLES
The following example reads lines from stdin and parses them, operating
on the finished parse tree with
@@ -288,49 +276,15 @@ if (NULL == (node = mdoc_node(mdoc)))
parsed(mdoc, node);
mdoc_free(mdoc);
.Ed
-.\" SECTION
+.Pp
+Please see
+.Pa main.c
+in the source archive for a rigorous reference.
.Sh SEE ALSO
.Xr mandoc 1 ,
.Xr mdoc 7
-.\" SECTION
.Sh AUTHORS
The
.Nm
-utility was written by
+library was written by
.An Kristaps Dzonsons Aq kristaps@bsd.lv .
-.\" SECTION
-.Sh CAVEATS
-.Bl -dash -compact
-.\" LIST-ITEM
-.It
-The
-.Sq \&.Xc
-and
-.Sq \&.Xo
-macros aren't handled when used to span lines for the
-.Sq \&.It
-macro.
-.\" LIST-ITEM
-.It
-The
-.Sq \&.Bsx
-macro family doesn't yet understand version arguments.
-.\" LIST-ITEM
-.It
-If not given a value, the \-offset argument to
-.Sq \&.Bd
-and
-.Sq \&.Bl
-should be the width of
-.Qq <string> ;
-instead, a value of
-.Li 10n
-is provided.
-.\" LIST-ITEM
-.It
-Columns widths in
-.Sq \&.Bl \-column
-should default to width
-.Qq <stringx>
-if not included.
-.El