mandoc.h

   1 /*      $Id: mandoc.h,v 1.101 2012/05/27 17:54:54 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17 #ifndef MANDOC_H
  18 #define MANDOC_H
  19
  20 #define ASCII_NBRSP      31  /* non-breaking space */
  21 #define ASCII_HYPH       30  /* breakable hyphen */
  22
  23 /*
  24  * Status level.  This refers to both internal status (i.e., whilst
  25  * running, when warnings/errors are reported) and an indicator of a
  26  * threshold of when to halt (when said internal state exceeds the
  27  * threshold).
  28  */
  29 enum    mandoclevel {
  30         MANDOCLEVEL_OK = 0,
  31         MANDOCLEVEL_RESERVED,
  32         MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
  33         MANDOCLEVEL_ERROR, /* input has been thrown away */
  34         MANDOCLEVEL_FATAL, /* input is borked */
  35         MANDOCLEVEL_BADARG, /* bad argument in invocation */
  36         MANDOCLEVEL_SYSERR, /* system error */
  37         MANDOCLEVEL_MAX
  38 };
  39
  40 /*
  41  * All possible things that can go wrong within a parse, be it libroff,
  42  * libmdoc, or libman.
  43  */
  44 enum    mandocerr {
  45         MANDOCERR_OK,
  46
  47         MANDOCERR_WARNING, /* ===== start of warnings ===== */
  48
  49         /* related to the prologue */
  50         MANDOCERR_NOTITLE, /* no title in document */
  51         MANDOCERR_UPPERCASE, /* document title should be all caps */
  52         MANDOCERR_BADMSEC, /* unknown manual section */
  53         MANDOCERR_NODATE, /* date missing, using today's date */
  54         MANDOCERR_BADDATE, /* cannot parse date, using it verbatim */
  55         MANDOCERR_PROLOGOOO, /* prologue macros out of order */
  56         MANDOCERR_PROLOGREP, /* duplicate prologue macro */
  57         MANDOCERR_BADPROLOG, /* macro not allowed in prologue */
  58         MANDOCERR_BADBODY, /* macro not allowed in body */
  59
  60         /* related to document structure */
  61         MANDOCERR_SO, /* .so is fragile, better use ln(1) */
  62         MANDOCERR_NAMESECFIRST, /* NAME section must come first */
  63         MANDOCERR_BADNAMESEC, /* bad NAME section contents */
  64         MANDOCERR_NONAME, /* manual name not yet set */
  65         MANDOCERR_SECOOO, /* sections out of conventional order */
  66         MANDOCERR_SECREP, /* duplicate section name */
  67         MANDOCERR_SECMSEC, /* section not in conventional manual section */
  68
  69         /* related to macros and nesting */
  70         MANDOCERR_MACROOBS, /* skipping obsolete macro */
  71         MANDOCERR_IGNPAR, /* skipping paragraph macro */
  72         MANDOCERR_IGNNS, /* skipping no-space macro */
  73         MANDOCERR_SCOPENEST, /* blocks badly nested */
  74         MANDOCERR_CHILD, /* child violates parent syntax */
  75         MANDOCERR_NESTEDDISP, /* nested displays are not portable */
  76         MANDOCERR_SCOPEREP, /* already in literal mode */
  77         MANDOCERR_LINESCOPE, /* line scope broken */
  78
  79         /* related to missing macro arguments */
  80         MANDOCERR_MACROEMPTY, /* skipping empty macro */
  81         MANDOCERR_ARGCWARN, /* argument count wrong */
  82         MANDOCERR_DISPTYPE, /* missing display type */
  83         MANDOCERR_LISTFIRST, /* list type must come first */
  84         MANDOCERR_NOWIDTHARG, /* tag lists require a width argument */
  85         MANDOCERR_FONTTYPE, /* missing font type */
  86         MANDOCERR_WNOSCOPE, /* skipping end of block that is not open */
  87
  88         /* related to bad macro arguments */
  89         MANDOCERR_IGNARGV, /* skipping argument */
  90         MANDOCERR_ARGVREP, /* duplicate argument */
  91         MANDOCERR_DISPREP, /* duplicate display type */
  92         MANDOCERR_LISTREP, /* duplicate list type */
  93         MANDOCERR_BADATT, /* unknown AT&T UNIX version */
  94         MANDOCERR_BADBOOL, /* bad Boolean value */
  95         MANDOCERR_BADFONT, /* unknown font */
  96         MANDOCERR_BADSTANDARD, /* unknown standard specifier */
  97         MANDOCERR_BADWIDTH, /* bad width argument */
  98
  99         /* related to plain text */
 100         MANDOCERR_NOBLANKLN, /* blank line in non-literal context */
 101         MANDOCERR_BADTAB, /* tab in non-literal context */
 102         MANDOCERR_EOLNSPACE, /* end of line whitespace */
 103         MANDOCERR_BADCOMMENT, /* bad comment style */
 104         MANDOCERR_BADESCAPE, /* unknown escape sequence */
 105         MANDOCERR_BADQUOTE, /* unterminated quoted string */
 106
 107         /* related to equations */
 108         MANDOCERR_EQNQUOTE, /* unexpected literal in equation */
 109
 110         MANDOCERR_ERROR, /* ===== start of errors ===== */
 111
 112         /* related to equations */
 113         MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/
 114         MANDOCERR_EQNSCOPE, /* equation scope open on exit */
 115         MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */
 116         MANDOCERR_EQNEOF, /* unexpected end of equation */
 117         MANDOCERR_EQNSYNT, /* equation syntax error */
 118
 119         /* related to tables */
 120         MANDOCERR_TBL, /* bad table syntax */
 121         MANDOCERR_TBLOPT, /* bad table option */
 122         MANDOCERR_TBLLAYOUT, /* bad table layout */
 123         MANDOCERR_TBLNOLAYOUT, /* no table layout cells specified */
 124         MANDOCERR_TBLNODATA, /* no table data cells specified */
 125         MANDOCERR_TBLIGNDATA, /* ignore data in cell */
 126         MANDOCERR_TBLBLOCK, /* data block still open */
 127         MANDOCERR_TBLEXTRADAT, /* ignoring extra data cells */
 128
 129         MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
 130         MANDOCERR_BADCHAR, /* skipping bad character */
 131         MANDOCERR_NAMESC, /* escaped character not allowed in a name */
 132         MANDOCERR_NOTEXT, /* skipping text before the first section header */
 133         MANDOCERR_MACRO, /* skipping unknown macro */
 134         MANDOCERR_REQUEST, /* NOT IMPLEMENTED: skipping request */
 135         MANDOCERR_ARGCOUNT, /* argument count wrong */
 136         MANDOCERR_NOSCOPE, /* skipping end of block that is not open */
 137         MANDOCERR_SCOPEBROKEN, /* missing end of block */
 138         MANDOCERR_SCOPEEXIT, /* scope open on exit */
 139         MANDOCERR_UNAME, /* uname(3) system call failed */
 140         /* FIXME: merge following with MANDOCERR_ARGCOUNT */
 141         MANDOCERR_NOARGS, /* macro requires line argument(s) */
 142         MANDOCERR_NOBODY, /* macro requires body argument(s) */
 143         MANDOCERR_NOARGV, /* macro requires argument(s) */
 144         MANDOCERR_LISTTYPE, /* missing list type */
 145         MANDOCERR_ARGSLOST, /* line argument(s) will be lost */
 146         MANDOCERR_BODYLOST, /* body argument(s) will be lost */
 147
 148         MANDOCERR_FATAL, /* ===== start of fatal errors ===== */
 149
 150         MANDOCERR_NOTMANUAL, /* manual isn't really a manual */
 151         MANDOCERR_COLUMNS, /* column syntax is inconsistent */
 152         MANDOCERR_BADDISP, /* NOT IMPLEMENTED: .Bd -file */
 153         MANDOCERR_SYNTARGVCOUNT, /* argument count wrong, violates syntax */
 154         MANDOCERR_SYNTCHILD, /* child violates parent syntax */
 155         MANDOCERR_SYNTARGCOUNT, /* argument count wrong, violates syntax */
 156         MANDOCERR_SOPATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
 157         MANDOCERR_NODOCBODY, /* no document body */
 158         MANDOCERR_NODOCPROLOG, /* no document prologue */
 159         MANDOCERR_MEM, /* static buffer exhausted */
 160         MANDOCERR_MAX
 161 };
 162
 163 struct  tbl {
 164         char              tab; /* cell-separator */
 165         char              decimal; /* decimal point */
 166         int               linesize;
 167         int               opts;
 168 #define TBL_OPT_CENTRE   (1 << 0)
 169 #define TBL_OPT_EXPAND   (1 << 1)
 170 #define TBL_OPT_BOX      (1 << 2)
 171 #define TBL_OPT_DBOX     (1 << 3)
 172 #define TBL_OPT_ALLBOX   (1 << 4)
 173 #define TBL_OPT_NOKEEP   (1 << 5)
 174 #define TBL_OPT_NOSPACE  (1 << 6)
 175         int               cols; /* number of columns */
 176 };
 177
 178 /*
 179  * The head of a table specifies all of its columns.  When formatting a
 180  * tbl_span, iterate over these and plug in data from the tbl_span when
 181  * appropriate, using tbl_cell as a guide to placement.
 182  */
 183 struct  tbl_head {
 184         int               ident; /* 0 <= unique id < cols */
 185         int               vert; /* width of preceding vertical line */
 186         struct tbl_head  *next;
 187         struct tbl_head  *prev;
 188 };
 189
 190 enum    tbl_cellt {
 191         TBL_CELL_CENTRE, /* c, C */
 192         TBL_CELL_RIGHT, /* r, R */
 193         TBL_CELL_LEFT, /* l, L */
 194         TBL_CELL_NUMBER, /* n, N */
 195         TBL_CELL_SPAN, /* s, S */
 196         TBL_CELL_LONG, /* a, A */
 197         TBL_CELL_DOWN, /* ^ */
 198         TBL_CELL_HORIZ, /* _, - */
 199         TBL_CELL_DHORIZ, /* = */
 200         TBL_CELL_MAX
 201 };
 202
 203 /*
 204  * A cell in a layout row.
 205  */
 206 struct  tbl_cell {
 207         struct tbl_cell  *next;
 208         int               vert; /* width of preceding vertical line */
 209         enum tbl_cellt    pos;
 210         size_t            spacing;
 211         int               flags;
 212 #define TBL_CELL_TALIGN  (1 << 0) /* t, T */
 213 #define TBL_CELL_BALIGN  (1 << 1) /* d, D */
 214 #define TBL_CELL_BOLD    (1 << 2) /* fB, B, b */
 215 #define TBL_CELL_ITALIC  (1 << 3) /* fI, I, i */
 216 #define TBL_CELL_EQUAL   (1 << 4) /* e, E */
 217 #define TBL_CELL_UP      (1 << 5) /* u, U */
 218 #define TBL_CELL_WIGN    (1 << 6) /* z, Z */
 219         struct tbl_head  *head;
 220 };
 221
 222 /*
 223  * A layout row.
 224  */
 225 struct  tbl_row {
 226         struct tbl_row   *next;
 227         struct tbl_cell  *first;
 228         struct tbl_cell  *last;
 229 };
 230
 231 enum    tbl_datt {
 232         TBL_DATA_NONE, /* has no data */
 233         TBL_DATA_DATA, /* consists of data/string */
 234         TBL_DATA_HORIZ, /* horizontal line */
 235         TBL_DATA_DHORIZ, /* double-horizontal line */
 236         TBL_DATA_NHORIZ, /* squeezed horizontal line */
 237         TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
 238 };
 239
 240 /*
 241  * A cell within a row of data.  The "string" field contains the actual
 242  * string value that's in the cell.  The rest is layout.
 243  */
 244 struct  tbl_dat {
 245         struct tbl_cell  *layout; /* layout cell */
 246         int               spans; /* how many spans follow */
 247         struct tbl_dat   *next;
 248         char             *string; /* data (NULL if not TBL_DATA_DATA) */
 249         enum tbl_datt     pos;
 250 };
 251
 252 enum    tbl_spant {
 253         TBL_SPAN_DATA, /* span consists of data */
 254         TBL_SPAN_HORIZ, /* span is horizontal line */
 255         TBL_SPAN_DHORIZ /* span is double horizontal line */
 256 };
 257
 258 /*
 259  * A row of data in a table.
 260  */
 261 struct  tbl_span {
 262         struct tbl       *tbl;
 263         struct tbl_head  *head;
 264         struct tbl_row   *layout; /* layout row */
 265         struct tbl_dat   *first;
 266         struct tbl_dat   *last;
 267         int               line; /* parse line */
 268         int               flags;
 269 #define TBL_SPAN_FIRST   (1 << 0)
 270 #define TBL_SPAN_LAST    (1 << 1)
 271         enum tbl_spant    pos;
 272         struct tbl_span  *next;
 273 };
 274
 275 enum    eqn_boxt {
 276         EQN_ROOT, /* root of parse tree */
 277         EQN_TEXT, /* text (number, variable, whatever) */
 278         EQN_SUBEXPR, /* nested `eqn' subexpression */
 279         EQN_LIST, /* subexpressions list */
 280         EQN_MATRIX /* matrix subexpression */
 281 };
 282
 283 enum    eqn_markt {
 284         EQNMARK_NONE = 0,
 285         EQNMARK_DOT,
 286         EQNMARK_DOTDOT,
 287         EQNMARK_HAT,
 288         EQNMARK_TILDE,
 289         EQNMARK_VEC,
 290         EQNMARK_DYAD,
 291         EQNMARK_BAR,
 292         EQNMARK_UNDER,
 293         EQNMARK__MAX
 294 };
 295
 296 enum    eqn_fontt {
 297         EQNFONT_NONE = 0,
 298         EQNFONT_ROMAN,
 299         EQNFONT_BOLD,
 300         EQNFONT_FAT,
 301         EQNFONT_ITALIC,
 302         EQNFONT__MAX
 303 };
 304
 305 enum    eqn_post {
 306         EQNPOS_NONE = 0,
 307         EQNPOS_OVER,
 308         EQNPOS_SUP,
 309         EQNPOS_SUB,
 310         EQNPOS_TO,
 311         EQNPOS_FROM,
 312         EQNPOS__MAX
 313 };
 314
 315 enum    eqn_pilet {
 316         EQNPILE_NONE = 0,
 317         EQNPILE_PILE,
 318         EQNPILE_CPILE,
 319         EQNPILE_RPILE,
 320         EQNPILE_LPILE,
 321         EQNPILE_COL,
 322         EQNPILE_CCOL,
 323         EQNPILE_RCOL,
 324         EQNPILE_LCOL,
 325         EQNPILE__MAX
 326 };
 327
 328  /*
 329  * A "box" is a parsed mathematical expression as defined by the eqn.7
 330  * grammar.
 331  */
 332 struct  eqn_box {
 333         int               size; /* font size of expression */
 334 #define EQN_DEFSIZE       INT_MIN
 335         enum eqn_boxt     type; /* type of node */
 336         struct eqn_box   *first; /* first child node */
 337         struct eqn_box   *last; /* last child node */
 338         struct eqn_box   *next; /* node sibling */
 339         struct eqn_box   *parent; /* node sibling */
 340         char             *text; /* text (or NULL) */
 341         char             *left;
 342         char             *right;
 343         enum eqn_post     pos; /* position of next box */
 344         enum eqn_markt    mark; /* a mark about the box */
 345         enum eqn_fontt    font; /* font of box */
 346         enum eqn_pilet    pile; /* equation piling */
 347 };
 348
 349 /*
 350  * An equation consists of a tree of expressions starting at a given
 351  * line and position.
 352  */
 353 struct  eqn {
 354         char             *name; /* identifier (or NULL) */
 355         struct eqn_box   *root; /* root mathematical expression */
 356         int               ln; /* invocation line */
 357         int               pos; /* invocation position */
 358 };
 359
 360 /*
 361  * The type of parse sequence.  This value is usually passed via the
 362  * mandoc(1) command line of -man and -mdoc.  It's almost exclusively
 363  * -mandoc but the others have been retained for compatibility.
 364  */
 365 enum    mparset {
 366         MPARSE_AUTO, /* magically determine the document type */
 367         MPARSE_MDOC, /* assume -mdoc */
 368         MPARSE_MAN /* assume -man */
 369 };
 370
 371 enum    mandoc_esc {
 372         ESCAPE_ERROR = 0, /* bail! unparsable escape */
 373         ESCAPE_IGNORE, /* escape to be ignored */
 374         ESCAPE_SPECIAL, /* a regular special character */
 375         ESCAPE_FONT, /* a generic font mode */
 376         ESCAPE_FONTBOLD, /* bold font mode */
 377         ESCAPE_FONTITALIC, /* italic font mode */
 378         ESCAPE_FONTROMAN, /* roman font mode */
 379         ESCAPE_FONTPREV, /* previous font mode */
 380         ESCAPE_NUMBERED, /* a numbered glyph */
 381         ESCAPE_UNICODE, /* a unicode codepoint */
 382         ESCAPE_NOSPACE /* suppress space if the last on a line */
 383 };
 384
 385 typedef void    (*mandocmsg)(enum mandocerr, enum mandoclevel,
 386                         const char *, int, int, const char *);
 387
 388 struct  mparse;
 389 struct  mchars;
 390 struct  mdoc;
 391 struct  man;
 392
 393 __BEGIN_DECLS
 394
 395 void             *mandoc_calloc(size_t, size_t);
 396 enum mandoc_esc   mandoc_escape(const char **, const char **, int *);
 397 void             *mandoc_malloc(size_t);
 398 void             *mandoc_realloc(void *, size_t);
 399 char             *mandoc_strdup(const char *);
 400 char             *mandoc_strndup(const char *, size_t);
 401 struct mchars    *mchars_alloc(void);
 402 void              mchars_free(struct mchars *);
 403 char              mchars_num2char(const char *, size_t);
 404 int               mchars_num2uc(const char *, size_t);
 405 int               mchars_spec2cp(const struct mchars *,
 406                         const char *, size_t);
 407 const char       *mchars_spec2str(const struct mchars *,
 408                         const char *, size_t, size_t *);
 409 struct mparse    *mparse_alloc(enum mparset, enum mandoclevel,
 410                         mandocmsg, void *, char *);
 411 void              mparse_free(struct mparse *);
 412 void              mparse_keep(struct mparse *);
 413 enum mandoclevel  mparse_readfd(struct mparse *, int, const char *);
 414 enum mandoclevel  mparse_readmem(struct mparse *, const void *, size_t,
 415                         const char *);
 416 void              mparse_reset(struct mparse *);
 417 void              mparse_result(struct mparse *,
 418                         struct mdoc **, struct man **);
 419 const char       *mparse_getkeep(const struct mparse *);
 420 const char       *mparse_strerror(enum mandocerr);
 421 const char       *mparse_strlevel(enum mandoclevel);
 422
 423 __END_DECLS
 424
 425 #endif /*!MANDOC_H*/