/* $Id: mandoc.h,v 1.63 2014/03/28 23:25:54 schwarze Exp $ */ /* * Copyright (c) 2010, 2011 Kristaps Dzonsons * Copyright (c) 2010-2014 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 * copyright notice and this permission notice appear in all copies. * * 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. */ #ifndef MANDOC_H #define MANDOC_H #define ASCII_NBRSP 31 /* non-breaking space */ #define ASCII_HYPH 30 /* breakable hyphen */ #define ASCII_BREAK 29 /* breakable zero-width space */ /* * Status level. This refers to both internal status (i.e., whilst * running, when warnings/errors are reported) and an indicator of a * threshold of when to halt (when said internal state exceeds the * threshold). */ enum mandoclevel { MANDOCLEVEL_OK = 0, MANDOCLEVEL_RESERVED, MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */ MANDOCLEVEL_ERROR, /* input has been thrown away */ MANDOCLEVEL_FATAL, /* input is borked */ MANDOCLEVEL_BADARG, /* bad argument in invocation */ MANDOCLEVEL_SYSERR, /* system error */ MANDOCLEVEL_MAX }; /* * All possible things that can go wrong within a parse, be it libroff, * libmdoc, or libman. */ enum mandocerr { MANDOCERR_OK, MANDOCERR_WARNING, /* ===== start of warnings ===== */ /* related to the prologue */ MANDOCERR_NOTITLE, /* no title in document */ MANDOCERR_UPPERCASE, /* document title should be all caps */ MANDOCERR_BADMSEC, /* unknown manual section */ MANDOCERR_BADVOLARCH, /* unknown manual volume or arch */ MANDOCERR_NODATE, /* date missing, using today's date */ MANDOCERR_BADDATE, /* cannot parse date, using it verbatim */ MANDOCERR_PROLOGOOO, /* prologue macros out of order */ MANDOCERR_PROLOGREP, /* duplicate prologue macro */ MANDOCERR_BADPROLOG, /* macro not allowed in prologue */ MANDOCERR_BADBODY, /* macro not allowed in body */ /* related to document structure */ MANDOCERR_SO, /* .so is fragile, better use ln(1) */ MANDOCERR_NAMESECFIRST, /* NAME section must come first */ MANDOCERR_BADNAMESEC, /* bad NAME section contents */ MANDOCERR_SECOOO, /* sections out of conventional order */ MANDOCERR_SECREP, /* duplicate section name */ MANDOCERR_SECMSEC, /* section header suited to sections ... */ /* related to macros and nesting */ MANDOCERR_MACROOBS, /* skipping obsolete macro */ MANDOCERR_IGNPAR, /* skipping paragraph macro */ MANDOCERR_MOVEPAR, /* moving paragraph macro out of list */ MANDOCERR_IGNNS, /* skipping no-space macro */ MANDOCERR_SCOPENEST, /* blocks badly nested */ MANDOCERR_CHILD, /* child violates parent syntax */ MANDOCERR_NESTEDDISP, /* nested displays are not portable */ MANDOCERR_SCOPEREP, /* already in literal mode */ MANDOCERR_LINESCOPE, /* line scope broken */ /* related to missing macro arguments */ MANDOCERR_MACROEMPTY, /* skipping empty macro */ MANDOCERR_ARGCWARN, /* argument count wrong */ MANDOCERR_DISPTYPE, /* missing display type */ MANDOCERR_LISTFIRST, /* list type must come first */ MANDOCERR_NOWIDTHARG, /* tag lists require a width argument */ MANDOCERR_FONTTYPE, /* missing font type */ MANDOCERR_WNOSCOPE, /* skipping end of block that is not open */ /* related to bad macro arguments */ MANDOCERR_IGNARGV, /* skipping argument */ MANDOCERR_ARGVREP, /* duplicate argument */ MANDOCERR_DISPREP, /* duplicate display type */ MANDOCERR_LISTREP, /* duplicate list type */ MANDOCERR_BADATT, /* unknown AT&T UNIX version */ MANDOCERR_BADBOOL, /* bad Boolean value */ MANDOCERR_BADFONT, /* unknown font */ MANDOCERR_BADSTANDARD, /* unknown standard specifier */ MANDOCERR_BADWIDTH, /* bad width argument */ /* related to plain text */ MANDOCERR_NOBLANKLN, /* blank line in non-literal context */ MANDOCERR_BADTAB, /* tab in non-literal context */ MANDOCERR_EOLNSPACE, /* end of line whitespace */ MANDOCERR_BADCOMMENT, /* bad comment style */ MANDOCERR_BADESCAPE, /* unknown escape sequence */ MANDOCERR_BADQUOTE, /* unterminated quoted string */ /* related to equations */ MANDOCERR_EQNQUOTE, /* unexpected literal in equation */ MANDOCERR_ERROR, /* ===== start of errors ===== */ /* related to equations */ MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/ MANDOCERR_EQNSCOPE, /* equation scope open on exit */ MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */ MANDOCERR_EQNEOF, /* unexpected end of equation */ MANDOCERR_EQNSYNT, /* equation syntax error */ /* related to tables */ MANDOCERR_TBL, /* bad table syntax */ MANDOCERR_TBLOPT, /* bad table option */ MANDOCERR_TBLLAYOUT, /* bad table layout */ MANDOCERR_TBLNOLAYOUT, /* no table layout cells specified */ MANDOCERR_TBLNODATA, /* no table data cells specified */ MANDOCERR_TBLIGNDATA, /* ignore data in cell */ MANDOCERR_TBLBLOCK, /* data block still open */ MANDOCERR_TBLEXTRADAT, /* ignoring extra data cells */ MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */ MANDOCERR_BADCHAR, /* skipping bad character */ MANDOCERR_NAMESC, /* escaped character not allowed in a name */ MANDOCERR_NONAME, /* manual name not yet set */ MANDOCERR_NOTEXT, /* skipping text before the first section header */ MANDOCERR_MACRO, /* skipping unknown macro */ MANDOCERR_REQUEST, /* NOT IMPLEMENTED: skipping request */ MANDOCERR_ARGCOUNT, /* argument count wrong */ MANDOCERR_STRAYTA, /* skipping column outside column list */ MANDOCERR_NOSCOPE, /* skipping end of block that is not open */ MANDOCERR_SCOPEBROKEN, /* missing end of block */ MANDOCERR_SCOPEEXIT, /* scope open on exit */ MANDOCERR_UNAME, /* uname(3) system call failed */ /* FIXME: merge following with MANDOCERR_ARGCOUNT */ MANDOCERR_NOARGS, /* macro requires line argument(s) */ MANDOCERR_NOBODY, /* macro requires body argument(s) */ MANDOCERR_NOARGV, /* macro requires argument(s) */ MANDOCERR_NUMERIC, /* request requires a numeric argument */ MANDOCERR_LISTTYPE, /* missing list type */ MANDOCERR_ARGSLOST, /* line argument(s) will be lost */ MANDOCERR_BODYLOST, /* body argument(s) will be lost */ MANDOCERR_FATAL, /* ===== start of fatal errors ===== */ MANDOCERR_TOOLARGE, /* input too large */ MANDOCERR_NOTMANUAL, /* manual isn't really a manual */ MANDOCERR_COLUMNS, /* column syntax is inconsistent */ MANDOCERR_BADDISP, /* NOT IMPLEMENTED: .Bd -file */ MANDOCERR_SYNTARGVCOUNT, /* argument count wrong, violates syntax */ MANDOCERR_SYNTCHILD, /* child violates parent syntax */ MANDOCERR_SYNTARGCOUNT, /* argument count wrong, violates syntax */ MANDOCERR_SOPATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */ MANDOCERR_NODOCBODY, /* no document body */ MANDOCERR_NODOCPROLOG, /* no document prologue */ MANDOCERR_MEM, /* static buffer exhausted */ /* ===== system errors ===== */ MANDOCERR_SYSOPEN, /* cannot open file */ MANDOCERR_SYSSTAT, /* cannot stat file */ MANDOCERR_SYSREAD, /* cannot read file */ MANDOCERR_MAX }; struct tbl_opts { char tab; /* cell-separator */ char decimal; /* decimal point */ int linesize; int opts; #define TBL_OPT_CENTRE (1 << 0) #define TBL_OPT_EXPAND (1 << 1) #define TBL_OPT_BOX (1 << 2) #define TBL_OPT_DBOX (1 << 3) #define TBL_OPT_ALLBOX (1 << 4) #define TBL_OPT_NOKEEP (1 << 5) #define TBL_OPT_NOSPACE (1 << 6) int cols; /* number of columns */ }; /* * The head of a table specifies all of its columns. When formatting a * tbl_span, iterate over these and plug in data from the tbl_span when * appropriate, using tbl_cell as a guide to placement. */ struct tbl_head { int ident; /* 0 <= unique id < cols */ int vert; /* width of preceding vertical line */ struct tbl_head *next; struct tbl_head *prev; }; enum tbl_cellt { TBL_CELL_CENTRE, /* c, C */ TBL_CELL_RIGHT, /* r, R */ TBL_CELL_LEFT, /* l, L */ TBL_CELL_NUMBER, /* n, N */ TBL_CELL_SPAN, /* s, S */ TBL_CELL_LONG, /* a, A */ TBL_CELL_DOWN, /* ^ */ TBL_CELL_HORIZ, /* _, - */ TBL_CELL_DHORIZ, /* = */ TBL_CELL_MAX }; /* * A cell in a layout row. */ struct tbl_cell { struct tbl_cell *next; int vert; /* width of preceding vertical line */ enum tbl_cellt pos; size_t spacing; int flags; #define TBL_CELL_TALIGN (1 << 0) /* t, T */ #define TBL_CELL_BALIGN (1 << 1) /* d, D */ #define TBL_CELL_BOLD (1 << 2) /* fB, B, b */ #define TBL_CELL_ITALIC (1 << 3) /* fI, I, i */ #define TBL_CELL_EQUAL (1 << 4) /* e, E */ #define TBL_CELL_UP (1 << 5) /* u, U */ #define TBL_CELL_WIGN (1 << 6) /* z, Z */ struct tbl_head *head; }; /* * A layout row. */ struct tbl_row { struct tbl_row *next; struct tbl_cell *first; struct tbl_cell *last; int vert; /* trailing vertical line */ }; enum tbl_datt { TBL_DATA_NONE, /* has no data */ TBL_DATA_DATA, /* consists of data/string */ TBL_DATA_HORIZ, /* horizontal line */ TBL_DATA_DHORIZ, /* double-horizontal line */ TBL_DATA_NHORIZ, /* squeezed horizontal line */ TBL_DATA_NDHORIZ /* squeezed double-horizontal line */ }; /* * A cell within a row of data. The "string" field contains the actual * string value that's in the cell. The rest is layout. */ struct tbl_dat { struct tbl_cell *layout; /* layout cell */ int spans; /* how many spans follow */ struct tbl_dat *next; char *string; /* data (NULL if not TBL_DATA_DATA) */ enum tbl_datt pos; }; enum tbl_spant { TBL_SPAN_DATA, /* span consists of data */ TBL_SPAN_HORIZ, /* span is horizontal line */ TBL_SPAN_DHORIZ /* span is double horizontal line */ }; /* * A row of data in a table. */ struct tbl_span { struct tbl_opts *opts; struct tbl_head *head; struct tbl_row *layout; /* layout row */ struct tbl_dat *first; struct tbl_dat *last; int line; /* parse line */ int flags; #define TBL_SPAN_FIRST (1 << 0) #define TBL_SPAN_LAST (1 << 1) enum tbl_spant pos; struct tbl_span *next; }; enum eqn_boxt { EQN_ROOT, /* root of parse tree */ EQN_TEXT, /* text (number, variable, whatever) */ EQN_SUBEXPR, /* nested `eqn' subexpression */ EQN_LIST, /* subexpressions list */ EQN_MATRIX /* matrix subexpression */ }; enum eqn_markt { EQNMARK_NONE = 0, EQNMARK_DOT, EQNMARK_DOTDOT, EQNMARK_HAT, EQNMARK_TILDE, EQNMARK_VEC, EQNMARK_DYAD, EQNMARK_BAR, EQNMARK_UNDER, EQNMARK__MAX }; enum eqn_fontt { EQNFONT_NONE = 0, EQNFONT_ROMAN, EQNFONT_BOLD, EQNFONT_FAT, EQNFONT_ITALIC, EQNFONT__MAX }; enum eqn_post { EQNPOS_NONE = 0, EQNPOS_OVER, EQNPOS_SUP, EQNPOS_SUB, EQNPOS_TO, EQNPOS_FROM, EQNPOS__MAX }; enum eqn_pilet { EQNPILE_NONE = 0, EQNPILE_PILE, EQNPILE_CPILE, EQNPILE_RPILE, EQNPILE_LPILE, EQNPILE_COL, EQNPILE_CCOL, EQNPILE_RCOL, EQNPILE_LCOL, EQNPILE__MAX }; /* * A "box" is a parsed mathematical expression as defined by the eqn.7 * grammar. */ struct eqn_box { int size; /* font size of expression */ #define EQN_DEFSIZE INT_MIN enum eqn_boxt type; /* type of node */ struct eqn_box *first; /* first child node */ struct eqn_box *last; /* last child node */ struct eqn_box *next; /* node sibling */ struct eqn_box *parent; /* node sibling */ char *text; /* text (or NULL) */ char *left; char *right; enum eqn_post pos; /* position of next box */ enum eqn_markt mark; /* a mark about the box */ enum eqn_fontt font; /* font of box */ enum eqn_pilet pile; /* equation piling */ }; /* * An equation consists of a tree of expressions starting at a given * line and position. */ struct eqn { char *name; /* identifier (or NULL) */ struct eqn_box *root; /* root mathematical expression */ int ln; /* invocation line */ int pos; /* invocation position */ }; /* * Parse options. */ #define MPARSE_MDOC 1 /* assume -mdoc */ #define MPARSE_MAN 2 /* assume -man */ #define MPARSE_SO 4 /* honour .so requests */ #define MPARSE_QUICK 8 /* abort the parse early */ enum mandoc_esc { ESCAPE_ERROR = 0, /* bail! unparsable escape */ ESCAPE_IGNORE, /* escape to be ignored */ ESCAPE_SPECIAL, /* a regular special character */ ESCAPE_FONT, /* a generic font mode */ ESCAPE_FONTBOLD, /* bold font mode */ ESCAPE_FONTITALIC, /* italic font mode */ ESCAPE_FONTBI, /* bold italic font mode */ ESCAPE_FONTROMAN, /* roman font mode */ ESCAPE_FONTPREV, /* previous font mode */ ESCAPE_NUMBERED, /* a numbered glyph */ ESCAPE_UNICODE, /* a unicode codepoint */ ESCAPE_NOSPACE, /* suppress space if the last on a line */ ESCAPE_SKIPCHAR /* skip the next character */ }; typedef void (*mandocmsg)(enum mandocerr, enum mandoclevel, const char *, int, int, const char *); struct mparse; struct mchars; struct mdoc; struct man; __BEGIN_DECLS enum mandoc_esc mandoc_escape(const char **, const char **, int *); struct mchars *mchars_alloc(void); void mchars_free(struct mchars *); char mchars_num2char(const char *, size_t); int mchars_num2uc(const char *, size_t); int mchars_spec2cp(const struct mchars *, const char *, size_t); const char *mchars_spec2str(const struct mchars *, const char *, size_t, size_t *); struct mparse *mparse_alloc(int, enum mandoclevel, mandocmsg, char *); void mparse_free(struct mparse *); void mparse_keep(struct mparse *); enum mandoclevel mparse_readfd(struct mparse *, int, const char *); void mparse_reset(struct mparse *); void mparse_result(struct mparse *, struct mdoc **, struct man **, char **); const char *mparse_getkeep(const struct mparse *); const char *mparse_strerror(enum mandocerr); const char *mparse_strlevel(enum mandoclevel); __END_DECLS #endif /*!MANDOC_H*/