/* $Id$ */
/*
* Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2016 Ingo Schwarze <schwarze@openbsd.org>
*
* 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_RESERVED,
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_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_TITLE_CASE, /* lower case character in document title */
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_OS_MISSING, /* missing Os macro, using "" */
MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */
MANDOCERR_PROLOG_LATE, /* late prologue macro: macro */
MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */
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 name */
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_ND_EMPTY, /* missing description line, using "" */
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_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_FI_SKIP, /* fill mode already enabled, skipping: fi */
MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */
MANDOCERR_BLK_LINE, /* line scope broken: macro breaks macro */
/* 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 8n */
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_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_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_QUOTE, /* unterminated quoted argument */
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_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_SPACE_EOL, /* whitespace at end of input line */
MANDOCERR_COMMENT_BAD, /* bad comment style */
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_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_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;
int vert; /* width of subsequent vertical line */
enum tbl_cellt pos;
size_t spacing;
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 */
};
/*
* 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 */
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_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_LISTONE, /* singleton list */
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_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 */
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 mandoclevel, mandocmsg, 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);
