=================================================================== RCS file: /cvs/mandoc/mandoc.3,v retrieving revision 1.31 retrieving revision 1.39 diff -u -p -r1.31 -r1.39 --- mandoc/mandoc.3 2015/01/15 04:26:40 1.31 +++ mandoc/mandoc.3 2017/05/17 23:39:31 1.39 @@ -1,7 +1,7 @@ -.\" $Id: mandoc.3,v 1.31 2015/01/15 04:26:40 schwarze Exp $ +.\" $Id: mandoc.3,v 1.39 2017/05/17 23:39:31 schwarze Exp $ .\" .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons -.\" Copyright (c) 2010, 2013, 2014, 2015 Ingo Schwarze +.\" Copyright (c) 2010-2017 Ingo Schwarze .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above @@ -15,18 +15,16 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: January 15 2015 $ +.Dd $Mdocdate: May 17 2017 $ .Dt MANDOC 3 .Os .Sh NAME .Nm mandoc , -.Nm man_deroff , -.Nm man_meta , +.Nm deroff , +.Nm mandocmsg , .Nm man_mparse , -.Nm man_node , -.Nm mdoc_deroff , -.Nm mdoc_meta , -.Nm mdoc_node , +.Nm man_validate , +.Nm mdoc_validate , .Nm mparse_alloc , .Nm mparse_free , .Nm mparse_getkeep , @@ -36,8 +34,8 @@ .Nm mparse_reset , .Nm mparse_result , .Nm mparse_strerror , -.Nm mparse_strlevel -.Nm mparse_wait , +.Nm mparse_strlevel , +.Nm mparse_updaterc .Nd mandoc macro compiler library .Sh SYNOPSIS .In sys/types.h @@ -51,7 +49,6 @@ .Fa "int options" .Fa "enum mandoclevel wlevel" .Fa "mandocmsg mmsg" -.Fa "const struct mchars *mchars" .Fa "char *defos" .Fc .Ft void @@ -75,10 +72,9 @@ .Fo mparse_keep .Fa "struct mparse *parse" .Fc -.Ft "enum mandoclevel" +.Ft int .Fo mparse_open .Fa "struct mparse *parse" -.Fa "int *fd" .Fa "const char *fname" .Fc .Ft "enum mandoclevel" @@ -94,8 +90,7 @@ .Ft void .Fo mparse_result .Fa "struct mparse *parse" -.Fa "struct mdoc **mdoc" -.Fa "struct man **man" +.Fa "struct roff_man **man" .Fa "char **sodest" .Fc .Ft "const char *" @@ -106,49 +101,38 @@ .Fo mparse_strlevel .Fa "enum mandoclevel" .Fc -.Ft "enum mandoclevel" -.Fo mparse_wait +.Ft void +.Fo mparse_updaterc .Fa "struct mparse *parse" +.Fa "enum mandoclevel *rc" .Fc -.In sys/types.h -.In mandoc.h -.In mdoc.h +.In roff.h .Ft void -.Fo mdoc_deroff +.Fo deroff .Fa "char **dest" -.Fa "const struct mdoc_node *node" +.Fa "const struct roff_node *node" .Fc -.Ft "const struct mdoc_meta *" -.Fo mdoc_meta -.Fa "const struct mdoc *mdoc" -.Fc -.Ft "const struct mdoc_node *" -.Fo mdoc_node -.Fa "const struct mdoc *mdoc" -.Fc +.In sys/types.h +.In mandoc.h +.In mdoc.h .Vt extern const char * const * mdoc_argnames; .Vt extern const char * const * mdoc_macronames; +.Ft void +.Fo mdoc_validate +.Fa "struct roff_man *mdoc" +.Fc .In sys/types.h .In mandoc.h .In man.h -.Ft void -.Fo man_deroff -.Fa "char **dest" -.Fa "const struct man_node *node" -.Fc -.Ft "const struct man_meta *" -.Fo man_meta -.Fa "const struct man *man" -.Fc +.Vt extern const char * const * man_macronames; .Ft "const struct mparse *" .Fo man_mparse -.Fa "const struct man *man" +.Fa "const struct roff_man *man" .Fc -.Ft "const struct man_node *" -.Fo man_node -.Fa "const struct man *man" +.Ft void +.Fo man_validate +.Fa "struct roff_man *man" .Fc -.Vt extern const char * const * man_macronames; .Sh DESCRIPTION The .Nm mandoc @@ -183,21 +167,41 @@ or parse it with .Fn mparse_readfd ; .It +close it with +.Xr close 2 ; +.It retrieve the syntax tree with .Fn mparse_result ; .It -iterate over parse nodes with -.Fn mdoc_node +depending on whether the +.Fa macroset +member of the returned +.Vt struct roff_man +is +.Dv MACROSET_MDOC or -.Fn man_node ; +.Dv MACROSET_MAN , +validate it with +.Fn mdoc_validate +or +.Fn man_validate , +respectively; .It +if information about the validity of the input is needed, fetch it with +.Fn mparse_updaterc ; +.It +iterate over parse nodes with starting from the +.Fa first +member of the returned +.Vt struct roff_man ; +.It free all allocated memory with .Fn mparse_free and .Xr mchars_free 3 , or invoke .Fn mparse_reset -and parse new files. +and go back to step 2 to parse new files. .El .Sh REFERENCE This section documents the functions, types, and variables available @@ -215,12 +219,9 @@ An error or warning message during parsing. A classification of an .Vt "enum mandocerr" as regards system operation. -.It Vt "struct mchars" -An opaque pointer to a a character table. -Created with -.Xr mchars_alloc 3 -and freed with -.Xr mchars_free 3 . +See the DIAGNOSTICS section in +.Xr mandoc 1 +regarding the meanings of the levels. .It Vt "struct mparse" An opaque pointer to a running parse sequence. Created with @@ -236,72 +237,42 @@ messages emitted by the parser. .El .Ss Functions .Bl -ohang -.It Fn man_deroff +.It Fn deroff Obtain a text-only representation of a -.Vt struct man_node , +.Vt struct roff_node , including text contained in its child nodes. -To be used on children of the pointer returned from -.Fn man_node . +To be used on children of the +.Fa first +member of +.Vt struct roff_man . When it is no longer needed, the pointer returned from -.Fn man_deroff +.Fn deroff can be passed to .Xr free 3 . -.It Fn man_meta -Obtain the meta-data of a successful -.Xr man 7 -parse. -This may only be used on a pointer returned by -.Fn mparse_result . -Declared in -.In man.h , -implemented in -.Pa man.c . .It Fn man_mparse Get the parser used for the current output. Declared in .In man.h , implemented in .Pa man.c . -.It Fn man_node -Obtain the root node of a successful -.Xr man 7 -parse. -This may only be used on a pointer returned by +.It Fn man_validate +Validate the +.Dv MACROSET_MAN +parse tree obtained with .Fn mparse_result . Declared in .In man.h , implemented in .Pa man.c . -.It Fn mdoc_deroff -Obtain a text-only representation of a -.Vt struct mdoc_node , -including text contained in its child nodes. -To be used on children of the pointer returned from -.Fn mdoc_node . -When it is no longer needed, the pointer returned from -.Fn mdoc_deroff -can be passed to -.Xr free 3 . -.It Fn mdoc_meta -Obtain the meta-data of a successful -.Xr mdoc -parse. -This may only be used on a pointer returned by +.It Fn mdoc_validate +Validate the +.Dv MACROSET_MDOC +parse tree obtained with .Fn mparse_result . Declared in .In mdoc.h , implemented in .Pa mdoc.c . -.It Fn mdoc_node -Obtain the root node of a successful -.Xr mdoc -parse. -This may only be used on a pointer returned by -.Fn mparse_result . -Declared in -.In mdoc.h , -implemented in -.Pa mdoc.c . .It Fn mparse_alloc Allocate a parser. The arguments have the following effect: @@ -345,9 +316,9 @@ A callback function to handle errors and warnings. See .Pa main.c for an example. -.It Ar mchars -An opaque pointer to a a character table obtained from -.Xr mchars_alloc 3 . +If printing of error messages is not desired, +.Dv NULL +may be passed. .It Ar defos A default string for the .Xr mdoc 7 @@ -356,6 +327,9 @@ macro, overriding the .Dv OSNAME preprocessor definition and the results of .Xr uname 3 . +Passing +.Dv NULL +sets no default. .El .Pp The same parser may be used for multiple files so long as @@ -392,23 +366,15 @@ Declared in implemented in .Pa read.c . .It Fn mparse_open -If the +Open the file for reading. +If that fails and .Fa fname -ends in -.Pa .gz , -open with -.Xr gunzip 1 ; -otherwise, with -.Xr open 2 . -If -.Xr open 2 -fails, append -.Pa .gz -and try with -.Xr gunzip 1 . -Return a file descriptor open for reading in -.Fa fd , -or -1 on failure. +does not already end in +.Ql .gz , +try again after appending +.Ql .gz . +Save the information whether the file is zipped or not. +Return a file descriptor open for reading or -1 on failure. It can be passed to .Fn mparse_readfd or used directly. @@ -423,10 +389,9 @@ or .Fn mparse_open . Pass the associated filename in .Va fname . -Calls -.Fn mparse_wait -before returning. This function may be called multiple times with different parameters; however, +.Xr close 2 +and .Fn mparse_reset should be invoked between parses. Declared in @@ -443,7 +408,7 @@ implemented in .Pa read.c . .It Fn mparse_result Obtain the result of a parse. -One of the three pointers will be filled in. +One of the two pointers will be filled in. Declared in .In mandoc.h , implemented in @@ -460,24 +425,18 @@ Declared in .In mandoc.h , implemented in .Pa read.c . -.It Fn mparse_wait -Bury a -.Xr gunzip 1 -child process that was spawned with -.Fn mparse_open . -To be called after the parse sequence is complete. -Not needed after -.Fn mparse_readfd , -but does no harm in that case, either. -Returns -.Dv MANDOCLEVEL_OK -on success and -.Dv MANDOCLEVEL_SYSERR -on failure, that is, when -.Xr wait 2 -fails, or when -.Xr gunzip 1 -died from a signal or exited with non-zero status. +.It Fn mparse_updaterc +If the highest warning or error level that occurred during the current +.Fa parse +is higher than +.Pf * Fa rc , +update +.Pf * Fa rc +accordingly. +This is useful after calling +.Fn mdoc_validate +or +.Fn man_validate . Declared in .In mandoc.h , implemented in @@ -486,13 +445,19 @@ implemented in .Ss Variables .Bl -ohang .It Va man_macronames -The string representation of a man macro as indexed by +The string representation of a +.Xr man 7 +macro as indexed by .Vt "enum mant" . .It Va mdoc_argnames -The string representation of a mdoc macro argument as indexed by +The string representation of an +.Xr mdoc 7 +macro argument as indexed by .Vt "enum mdocargt" . .It Va mdoc_macronames -The string representation of a mdoc macro as indexed by +The string representation of an +.Xr mdoc 7 +macro as indexed by .Vt "enum mdoct" . .El .Sh IMPLEMENTATION NOTES @@ -536,15 +501,15 @@ This AST is governed by the ontological rules dictated and derives its terminology accordingly. .Pp The AST is composed of -.Vt struct man_node +.Vt struct roff_node nodes with element, root and text types as declared by the .Va type field. Each node also provides its parse point (the .Va line , -.Va sec , +.Va pos , and -.Va pos +.Va sec fields), its position in the tree (the .Va parent , .Va child , @@ -588,20 +553,20 @@ are described simply as .Qq elements . .Pp The AST is composed of -.Vt struct mdoc_node +.Vt struct roff_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 .Va line , -.Va sec , +.Va pos , and -.Va pos +.Va sec fields), its position in the tree (the .Va parent , .Va child , -.Va nchild , +.Va last , .Va next and .Va prev @@ -704,19 +669,21 @@ Using badly-nested blocks is .Em strongly discouraged ; for example, the .Fl T Ns Cm html -and -.Fl T Ns Cm xhtml -front-ends to +front-end to .Xr mandoc 1 -are unable to render them in any meaningful way. +is unable to render them in any meaningful way. Furthermore, behaviour when encountering badly-nested blocks is not consistent across troff implementations, especially when using multiple levels of badly-nested blocks. .Sh SEE ALSO .Xr mandoc 1 , +.Xr man.cgi 3 , .Xr mandoc_escape 3 , +.Xr mandoc_headers 3 , .Xr mandoc_malloc 3 , +.Xr mansearch 3 , .Xr mchars_alloc 3 , +.Xr tbl 3 , .Xr eqn 7 , .Xr man 7 , .Xr mandoc_char 7 , @@ -724,7 +691,10 @@ levels of badly-nested blocks. .Xr roff 7 , .Xr tbl 7 .Sh AUTHORS +.An -nosplit The .Nm library was written by -.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv . +.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv +and is maintained by +.An Ingo Schwarze Aq Mt schwarze@openbsd.org .