/* $Id$ */ /* * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons * 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 * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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. */ #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_STYLE, /* style suggestions */ MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */ MANDOCLEVEL_ERROR, /* input has been thrown away */ MANDOCLEVEL_UNSUPP, /* input needs unimplemented features */ 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_BASE, /* ===== start of base system conventions ===== */ MANDOCERR_MDOCDATE, /* Mdocdate found: Dd ... */ MANDOCERR_MDOCDATE_MISSING, /* Mdocdate missing: Dd ... */ MANDOCERR_ARCH_BAD, /* unknown architecture: Dt ... arch */ MANDOCERR_OS_ARG, /* operating system explicitly specified: Os ... */ MANDOCERR_RCS_MISSING, /* RCS id missing */ MANDOCERR_XR_BAD, /* referenced manual not found: Xr name sec */ MANDOCERR_STYLE, /* ===== start of style suggestions ===== */ MANDOCERR_DATE_LEGACY, /* legacy man(7) date format: Dd ... */ MANDOCERR_TITLE_CASE, /* lower case character in document title */ MANDOCERR_RCS_REP, /* duplicate RCS id: ... */ MANDOCERR_SEC_TYPO, /* typo in section name: Sh ... */ MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */ MANDOCERR_MACRO_USELESS, /* useless macro: macro */ MANDOCERR_BX, /* consider using OS macro: macro */ MANDOCERR_ER_ORDER, /* errnos out of order: Er ... */ MANDOCERR_ER_REP, /* duplicate errno: Er ... */ MANDOCERR_DELIM, /* trailing delimiter: macro ... */ MANDOCERR_DELIM_NB, /* no blank before trailing delimiter: macro ... */ MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping: fi */ MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */ MANDOCERR_FUNC, /* function name without markup: name() */ MANDOCERR_SPACE_EOL, /* whitespace at end of input line */ MANDOCERR_COMMENT_BAD, /* bad comment style */ MANDOCERR_WARNING, /* ===== start of warnings ===== */ /* related to the prologue */ MANDOCERR_DT_NOTITLE, /* missing manual title, using UNTITLED: line */ MANDOCERR_TH_NOTITLE, /* missing manual title, using "": [macro] */ MANDOCERR_MSEC_MISSING, /* missing manual section, using "": macro */ MANDOCERR_MSEC_BAD, /* unknown manual section: Dt ... section */ MANDOCERR_DATE_MISSING, /* missing date, using today's date */ MANDOCERR_DATE_BAD, /* cannot parse date, using it verbatim: date */ MANDOCERR_DATE_FUTURE, /* date in the future, using it anyway: date */ MANDOCERR_OS_MISSING, /* missing Os macro, using "" */ MANDOCERR_PROLOG_LATE, /* late prologue macro: macro */ MANDOCERR_PROLOG_ORDER, /* prologue macros out of order: macros */ /* related to document structure */ MANDOCERR_SO, /* .so is fragile, better use ln(1): so path */ MANDOCERR_DOC_EMPTY, /* no document body */ MANDOCERR_SEC_BEFORE, /* content before first section header: macro */ MANDOCERR_NAMESEC_FIRST, /* first section is not NAME: Sh title */ MANDOCERR_NAMESEC_NONM, /* NAME section without Nm before Nd */ MANDOCERR_NAMESEC_NOND, /* NAME section without description */ MANDOCERR_NAMESEC_ND, /* description not at the end of NAME */ MANDOCERR_NAMESEC_BAD, /* bad NAME section content: macro */ MANDOCERR_NAMESEC_PUNCT, /* missing comma before name: Nm name */ MANDOCERR_ND_EMPTY, /* missing description line, using "" */ MANDOCERR_ND_LATE, /* description line outside NAME section */ MANDOCERR_SEC_ORDER, /* sections out of conventional order: Sh title */ MANDOCERR_SEC_REP, /* duplicate section title: Sh title */ MANDOCERR_SEC_MSEC, /* unexpected section: Sh title for ... only */ MANDOCERR_XR_SELF, /* cross reference to self: Xr name sec */ MANDOCERR_XR_ORDER, /* unusual Xr order: ... after ... */ MANDOCERR_XR_PUNCT, /* unusual Xr punctuation: ... after ... */ MANDOCERR_AN_MISSING, /* AUTHORS section without An macro */ /* related to macros and nesting */ MANDOCERR_MACRO_OBS, /* obsolete macro: macro */ MANDOCERR_MACRO_CALL, /* macro neither callable nor escaped: macro */ MANDOCERR_PAR_SKIP, /* skipping paragraph macro: macro ... */ MANDOCERR_PAR_MOVE, /* moving paragraph macro out of list: macro */ MANDOCERR_NS_SKIP, /* skipping no-space macro */ MANDOCERR_BLK_NEST, /* blocks badly nested: macro ... */ MANDOCERR_BD_NEST, /* nested displays are not portable: macro ... */ MANDOCERR_BL_MOVE, /* moving content out of list: macro */ MANDOCERR_TA_LINE, /* first macro on line: Ta */ MANDOCERR_BLK_LINE, /* line scope broken: macro breaks macro */ MANDOCERR_BLK_BLANK, /* skipping blank line in line scope */ /* related to missing arguments */ MANDOCERR_REQ_EMPTY, /* skipping empty request: request */ MANDOCERR_COND_EMPTY, /* conditional request controls empty scope */ MANDOCERR_MACRO_EMPTY, /* skipping empty macro: macro */ MANDOCERR_BLK_EMPTY, /* empty block: macro */ MANDOCERR_ARG_EMPTY, /* empty argument, using 0n: macro arg */ MANDOCERR_BD_NOTYPE, /* missing display type, using -ragged: Bd */ MANDOCERR_BL_LATETYPE, /* list type is not the first argument: Bl arg */ MANDOCERR_BL_NOWIDTH, /* missing -width in -tag list, using 6n */ MANDOCERR_EX_NONAME, /* missing utility name, using "": Ex */ MANDOCERR_FO_NOHEAD, /* missing function name, using "": Fo */ MANDOCERR_IT_NOHEAD, /* empty head in list item: Bl -type It */ MANDOCERR_IT_NOBODY, /* empty list item: Bl -type It */ MANDOCERR_IT_NOARG, /* missing argument, using next line: Bl -c It */ MANDOCERR_BF_NOFONT, /* missing font type, using \fR: Bf */ MANDOCERR_BF_BADFONT, /* unknown font type, using \fR: Bf font */ MANDOCERR_PF_SKIP, /* nothing follows prefix: Pf arg */ MANDOCERR_RS_EMPTY, /* empty reference block: Rs */ MANDOCERR_XR_NOSEC, /* missing section argument: Xr arg */ MANDOCERR_ARG_STD, /* missing -std argument, adding it: macro */ MANDOCERR_OP_EMPTY, /* missing option string, using "": OP */ MANDOCERR_UR_NOHEAD, /* missing resource identifier, using "": UR */ MANDOCERR_EQN_NOBOX, /* missing eqn box, using "": op */ /* related to bad arguments */ MANDOCERR_ARG_REP, /* duplicate argument: macro arg */ MANDOCERR_AN_REP, /* skipping duplicate argument: An -arg */ MANDOCERR_BD_REP, /* skipping duplicate display type: Bd -type */ MANDOCERR_BL_REP, /* skipping duplicate list type: Bl -type */ MANDOCERR_BL_SKIPW, /* skipping -width argument: Bl -type */ MANDOCERR_BL_COL, /* wrong number of cells */ MANDOCERR_AT_BAD, /* unknown AT&T UNIX version: At version */ MANDOCERR_FA_COMMA, /* comma in function argument: arg */ MANDOCERR_FN_PAREN, /* parenthesis in function name: arg */ MANDOCERR_LB_BAD, /* unknown library name: Lb ... */ MANDOCERR_RS_BAD, /* invalid content in Rs block: macro */ MANDOCERR_SM_BAD, /* invalid Boolean argument: macro arg */ MANDOCERR_FT_BAD, /* unknown font, skipping request: ft font */ MANDOCERR_TR_ODD, /* odd number of characters in request: tr char */ /* related to plain text */ MANDOCERR_FI_BLANK, /* blank line in fill mode, using .sp */ MANDOCERR_FI_TAB, /* tab in filled text */ MANDOCERR_EOS, /* new sentence, new line */ MANDOCERR_ESC_BAD, /* invalid escape sequence: esc */ MANDOCERR_STR_UNDEF, /* undefined string, using "": name */ /* related to tables */ MANDOCERR_TBLLAYOUT_SPAN, /* tbl line starts with span */ MANDOCERR_TBLLAYOUT_DOWN, /* tbl column starts with span */ MANDOCERR_TBLLAYOUT_VERT, /* skipping vertical bar in tbl layout */ MANDOCERR_ERROR, /* ===== start of errors ===== */ /* related to tables */ MANDOCERR_TBLOPT_ALPHA, /* non-alphabetic character in tbl options */ MANDOCERR_TBLOPT_BAD, /* skipping unknown tbl option: option */ MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument: option */ MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size: option */ MANDOCERR_TBLLAYOUT_NONE, /* empty tbl layout */ MANDOCERR_TBLLAYOUT_CHAR, /* invalid character in tbl layout: char */ MANDOCERR_TBLLAYOUT_PAR, /* unmatched parenthesis in tbl layout */ MANDOCERR_TBLDATA_NONE, /* tbl without any data cells */ MANDOCERR_TBLDATA_SPAN, /* ignoring data in spanned tbl cell: data */ MANDOCERR_TBLDATA_EXTRA, /* ignoring extra tbl data cells: data */ MANDOCERR_TBLDATA_BLK, /* data block open at end of tbl: macro */ /* related to document structure and macros */ MANDOCERR_FILE, /* cannot open file */ MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */ MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */ MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */ MANDOCERR_CHAR_BAD, /* skipping bad character: number */ MANDOCERR_MACRO, /* skipping unknown macro: macro */ MANDOCERR_REQ_INSEC, /* skipping insecure request: request */ MANDOCERR_IT_STRAY, /* skipping item outside list: It ... */ MANDOCERR_TA_STRAY, /* skipping column outside column list: Ta */ MANDOCERR_BLK_NOTOPEN, /* skipping end of block that is not open */ MANDOCERR_RE_NOTOPEN, /* fewer RS blocks open, skipping: RE arg */ MANDOCERR_BLK_BROKEN, /* inserting missing end of block: macro ... */ MANDOCERR_BLK_NOEND, /* appending missing end of block: macro */ /* related to request and macro arguments */ MANDOCERR_NAMESC, /* escaped character not allowed in a name: name */ MANDOCERR_BD_FILE, /* NOT IMPLEMENTED: Bd -file */ MANDOCERR_BD_NOARG, /* skipping display without arguments: Bd */ MANDOCERR_BL_NOTYPE, /* missing list type, using -item: Bl */ MANDOCERR_CE_NONUM, /* argument is not numeric, using 1: ce ... */ MANDOCERR_NM_NONAME, /* missing manual name, using "": Nm */ MANDOCERR_OS_UNAME, /* uname(3) system call failed, using UNKNOWN */ MANDOCERR_ST_BAD, /* unknown standard specifier: St standard */ MANDOCERR_IT_NONUM, /* skipping request without numeric argument */ MANDOCERR_SO_PATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */ MANDOCERR_SO_FAIL, /* .so request failed */ MANDOCERR_ARG_SKIP, /* skipping all arguments: macro args */ MANDOCERR_ARG_EXCESS, /* skipping excess arguments: macro ... args */ MANDOCERR_DIVZERO, /* divide by zero */ MANDOCERR_UNSUPP, /* ===== start of unsupported features ===== */ MANDOCERR_TOOLARGE, /* input too large */ MANDOCERR_CHAR_UNSUPP, /* unsupported control character: number */ MANDOCERR_REQ_UNSUPP, /* unsupported roff request: request */ MANDOCERR_TBLOPT_EQN, /* eqn delim option in tbl: arg */ MANDOCERR_TBLLAYOUT_MOD, /* unsupported tbl layout modifier: m */ MANDOCERR_TBLMACRO, /* ignoring macro in table: macro */ MANDOCERR_MAX }; struct tbl_opts { char tab; /* cell-separator */ char decimal; /* decimal point */ 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) #define TBL_OPT_NOWARN (1 << 7) int cols; /* number of columns */ int lvert; /* width of left vertical line */ int rvert; /* width of right vertical line */ }; 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; char *wstr; /* min width represented as a string */ size_t width; /* minimum column width */ size_t spacing; /* to the right of the column */ int vert; /* width of subsequent vertical line */ int col; /* column number, starting from 0 */ 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 */ #define TBL_CELL_WMAX (1 << 7) /* x, X */ enum tbl_cellt pos; }; /* * A layout row. */ struct tbl_row { struct tbl_row *next; struct tbl_cell *first; struct tbl_cell *last; int vert; /* width of left 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 */ struct tbl_dat *next; char *string; /* data (NULL if not TBL_DATA_DATA) */ int spans; /* how many spans follow */ int block; /* T{ text block T} */ 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_row *layout; /* layout row */ struct tbl_dat *first; struct tbl_dat *last; struct tbl_span *prev; struct tbl_span *next; int line; /* parse line */ enum tbl_spant pos; }; enum eqn_boxt { EQN_ROOT, /* root of parse tree */ EQN_TEXT, /* text (number, variable, whatever) */ EQN_SUBEXPR, /* nested `eqn' subexpression */ EQN_LIST, /* list (braces, etc.) */ EQN_PILE, /* vertical pile */ EQN_MATRIX /* pile of piles */ }; enum eqn_fontt { EQNFONT_NONE = 0, EQNFONT_ROMAN, EQNFONT_BOLD, EQNFONT_FAT, EQNFONT_ITALIC, EQNFONT__MAX }; enum eqn_post { EQNPOS_NONE = 0, EQNPOS_SUP, EQNPOS_SUBSUP, EQNPOS_SUB, EQNPOS_TO, EQNPOS_FROM, EQNPOS_FROMTO, EQNPOS_OVER, EQNPOS_SQRT, 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 *prev; /* node sibling */ struct eqn_box *parent; /* node sibling */ char *text; /* text (or NULL) */ char *left; /* fence left-hand */ char *right; /* fence right-hand */ char *top; /* expression over-symbol */ char *bottom; /* expression under-symbol */ size_t args; /* arguments in parent */ size_t expectargs; /* max arguments in parent */ enum eqn_post pos; /* position of next 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 */ #define MPARSE_UTF8 16 /* accept UTF-8 input */ #define MPARSE_LATIN1 32 /* accept ISO-LATIN-1 input */ enum mandoc_os { MANDOC_OS_OTHER = 0, MANDOC_OS_NETBSD, MANDOC_OS_OPENBSD }; 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_BREAK, /* break the output line */ ESCAPE_NOSPACE, /* suppress space if the last on a line */ ESCAPE_HORIZ, /* horizontal movement */ ESCAPE_HLINE, /* horizontal line drawing */ ESCAPE_SKIPCHAR, /* skip the next character */ ESCAPE_OVERSTRIKE /* overstrike all chars in the argument */ }; typedef void (*mandocmsg)(enum mandocerr, enum mandoclevel, const char *, int, int, const char *); struct mparse; struct roff_man; enum mandoc_esc mandoc_escape(const char **, const char **, int *); void mchars_alloc(void); void mchars_free(void); int mchars_num2char(const char *, size_t); const char *mchars_uc2str(int); int mchars_num2uc(const char *, size_t); int mchars_spec2cp(const char *, size_t); const char *mchars_spec2str(const char *, size_t, size_t *); struct mparse *mparse_alloc(int, enum mandocerr, mandocmsg, enum mandoc_os, const char *); void mparse_free(struct mparse *); void mparse_keep(struct mparse *); int mparse_open(struct mparse *, const char *); enum mandoclevel mparse_readfd(struct mparse *, int, const char *); enum mandoclevel mparse_readmem(struct mparse *, void *, size_t, const char *); void mparse_reset(struct mparse *); void mparse_result(struct mparse *, struct roff_man **, char **); const char *mparse_getkeep(const struct mparse *); const char *mparse_strerror(enum mandocerr); const char *mparse_strlevel(enum mandoclevel); void mparse_updaterc(struct mparse *, enum mandoclevel *);