mandoc.h

   1 /*      $Id: mandoc.h,v 1.90 2011/07/22 09:57:04 kristaps 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_EQNARGS, /* bad equation macro arguments */
 114         MANDOCERR_EQNNEST, /* too many nested equation defines */
 115         MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/
 116         MANDOCERR_EQNSCOPE, /* equation scope open on exit */
 117         MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */
 118         MANDOCERR_EQNEOF, /* unexpected end of equation */
 119         MANDOCERR_EQNSYNT, /* equation syntax error */
 120
 121         /* related to tables */
 122         MANDOCERR_TBL, /* bad table syntax */
 123         MANDOCERR_TBLOPT, /* bad table option */
 124         MANDOCERR_TBLLAYOUT, /* bad table layout */
 125         MANDOCERR_TBLNOLAYOUT, /* no table layout cells specified */
 126         MANDOCERR_TBLNODATA, /* no table data cells specified */
 127         MANDOCERR_TBLIGNDATA, /* ignore data in cell */
 128         MANDOCERR_TBLBLOCK, /* data block still open */
 129         MANDOCERR_TBLEXTRADAT, /* ignoring extra data cells */
 130
 131         MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
 132         MANDOCERR_BADCHAR, /* skipping bad character */
 133         MANDOCERR_NAMESC, /* escaped character not allowed in a name */
 134         MANDOCERR_NOTEXT, /* skipping text before the first section header */
 135         MANDOCERR_MACRO, /* skipping unknown macro */
 136         MANDOCERR_REQUEST, /* NOT IMPLEMENTED: skipping request */
 137         MANDOCERR_ARGCOUNT, /* argument count wrong */
 138         MANDOCERR_NOSCOPE, /* skipping end of block that is not open */
 139         MANDOCERR_SCOPEBROKEN, /* missing end of block */
 140         MANDOCERR_SCOPEEXIT, /* scope open on exit */
 141         MANDOCERR_UNAME, /* uname(3) system call failed */
 142         /* FIXME: merge following with MANDOCERR_ARGCOUNT */
 143         MANDOCERR_NOARGS, /* macro requires line argument(s) */
 144         MANDOCERR_NOBODY, /* macro requires body argument(s) */
 145         MANDOCERR_NOARGV, /* macro requires argument(s) */
 146         MANDOCERR_LISTTYPE, /* missing list type */
 147         MANDOCERR_ARGSLOST, /* line argument(s) will be lost */
 148         MANDOCERR_BODYLOST, /* body argument(s) will be lost */
 149
 150         MANDOCERR_FATAL, /* ===== start of fatal errors ===== */
 151
 152         MANDOCERR_NOTMANUAL, /* manual isn't really a manual */
 153         MANDOCERR_COLUMNS, /* column syntax is inconsistent */
 154         MANDOCERR_BADDISP, /* NOT IMPLEMENTED: .Bd -file */
 155         MANDOCERR_SYNTLINESCOPE, /* line scope broken, syntax violated */
 156         MANDOCERR_SYNTARGVCOUNT, /* argument count wrong, violates syntax */
 157         MANDOCERR_SYNTCHILD, /* child violates parent syntax */
 158         MANDOCERR_SYNTARGCOUNT, /* argument count wrong, violates syntax */
 159         MANDOCERR_SOPATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
 160         MANDOCERR_NODOCBODY, /* no document body */
 161         MANDOCERR_NODOCPROLOG, /* no document prologue */
 162         MANDOCERR_MEM, /* static buffer exhausted */
 163         MANDOCERR_MAX
 164 };
 165
 166 struct  tbl {
 167         char              tab; /* cell-separator */
 168         char              decimal; /* decimal point */
 169         int               linesize;
 170         int               opts;
 171 #define TBL_OPT_CENTRE   (1 << 0)
 172 #define TBL_OPT_EXPAND   (1 << 1)
 173 #define TBL_OPT_BOX      (1 << 2)
 174 #define TBL_OPT_DBOX     (1 << 3)
 175 #define TBL_OPT_ALLBOX   (1 << 4)
 176 #define TBL_OPT_NOKEEP   (1 << 5)
 177 #define TBL_OPT_NOSPACE  (1 << 6)
 178         int               cols; /* number of columns */
 179 };
 180
 181 enum    tbl_headt {
 182         TBL_HEAD_DATA, /* plug in data from tbl_dat */
 183         TBL_HEAD_VERT, /* vertical spacer */
 184         TBL_HEAD_DVERT  /* double-vertical spacer */
 185 };
 186
 187 /*
 188  * The head of a table specifies all of its columns.  When formatting a
 189  * tbl_span, iterate over these and plug in data from the tbl_span when
 190  * appropriate, using tbl_cell as a guide to placement.
 191  */
 192 struct  tbl_head {
 193         enum tbl_headt    pos;
 194         int               ident; /* 0 <= unique id < cols */
 195         struct tbl_head  *next;
 196         struct tbl_head  *prev;
 197 };
 198
 199 enum    tbl_cellt {
 200         TBL_CELL_CENTRE, /* c, C */
 201         TBL_CELL_RIGHT, /* r, R */
 202         TBL_CELL_LEFT, /* l, L */
 203         TBL_CELL_NUMBER, /* n, N */
 204         TBL_CELL_SPAN, /* s, S */
 205         TBL_CELL_LONG, /* a, A */
 206         TBL_CELL_DOWN, /* ^ */
 207         TBL_CELL_HORIZ, /* _, - */
 208         TBL_CELL_DHORIZ, /* = */
 209         TBL_CELL_VERT, /* | */
 210         TBL_CELL_DVERT, /* || */
 211         TBL_CELL_MAX
 212 };
 213
 214 /*
 215  * A cell in a layout row.
 216  */
 217 struct  tbl_cell {
 218         struct tbl_cell  *next;
 219         enum tbl_cellt    pos;
 220         size_t            spacing;
 221         int               flags;
 222 #define TBL_CELL_TALIGN  (1 << 0) /* t, T */
 223 #define TBL_CELL_BALIGN  (1 << 1) /* d, D */
 224 #define TBL_CELL_BOLD    (1 << 2) /* fB, B, b */
 225 #define TBL_CELL_ITALIC  (1 << 3) /* fI, I, i */
 226 #define TBL_CELL_EQUAL   (1 << 4) /* e, E */
 227 #define TBL_CELL_UP      (1 << 5) /* u, U */
 228 #define TBL_CELL_WIGN    (1 << 6) /* z, Z */
 229         struct tbl_head  *head;
 230 };
 231
 232 /*
 233  * A layout row.
 234  */
 235 struct  tbl_row {
 236         struct tbl_row   *next;
 237         struct tbl_cell  *first;
 238         struct tbl_cell  *last;
 239 };
 240
 241 enum    tbl_datt {
 242         TBL_DATA_NONE, /* has no data */
 243         TBL_DATA_DATA, /* consists of data/string */
 244         TBL_DATA_HORIZ, /* horizontal line */
 245         TBL_DATA_DHORIZ, /* double-horizontal line */
 246         TBL_DATA_NHORIZ, /* squeezed horizontal line */
 247         TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
 248 };
 249
 250 /*
 251  * A cell within a row of data.  The "string" field contains the actual
 252  * string value that's in the cell.  The rest is layout.
 253  */
 254 struct  tbl_dat {
 255         struct tbl_cell  *layout; /* layout cell */
 256         int               spans; /* how many spans follow */
 257         struct tbl_dat   *next;
 258         char             *string; /* data (NULL if not TBL_DATA_DATA) */
 259         enum tbl_datt     pos;
 260 };
 261
 262 enum    tbl_spant {
 263         TBL_SPAN_DATA, /* span consists of data */
 264         TBL_SPAN_HORIZ, /* span is horizontal line */
 265         TBL_SPAN_DHORIZ /* span is double horizontal line */
 266 };
 267
 268 /*
 269  * A row of data in a table.
 270  */
 271 struct  tbl_span {
 272         struct tbl       *tbl;
 273         struct tbl_head  *head;
 274         struct tbl_row   *layout; /* layout row */
 275         struct tbl_dat   *first;
 276         struct tbl_dat   *last;
 277         int               line; /* parse line */
 278         int               flags;
 279 #define TBL_SPAN_FIRST   (1 << 0)
 280 #define TBL_SPAN_LAST    (1 << 1)
 281         enum tbl_spant    pos;
 282         struct tbl_span  *next;
 283 };
 284
 285 enum    eqn_boxt {
 286         EQN_ROOT, /* root of parse tree */
 287         EQN_TEXT, /* text (number, variable, whatever) */
 288         EQN_SUBEXPR, /* nested `eqn' subexpression */
 289         EQN_LIST /* list of subexpressions */
 290 };
 291
 292 enum    eqn_markt {
 293         EQNMARK_NONE = 0,
 294         EQNMARK_DOT,
 295         EQNMARK_DOTDOT,
 296         EQNMARK_HAT,
 297         EQNMARK_TILDE,
 298         EQNMARK_VEC,
 299         EQNMARK_DYAD,
 300         EQNMARK_BAR,
 301         EQNMARK_UNDER,
 302         EQNMARK__MAX
 303 };
 304
 305 enum    eqn_fontt {
 306         EQNFONT_NONE = 0,
 307         EQNFONT_ROMAN,
 308         EQNFONT_BOLD,
 309         EQNFONT_ITALIC,
 310         EQNFONT__MAX
 311 };
 312
 313 enum    eqn_post {
 314         EQNPOS_NONE = 0,
 315         EQNPOS_OVER,
 316         EQNPOS_SUP,
 317         EQNPOS_SUB,
 318         EQNPOS_TO,
 319         EQNPOS_FROM,
 320         EQNPOS__MAX
 321 };
 322
 323 enum    eqn_pilet {
 324         EQNPILE_NONE = 0,
 325         EQNPILE_CPILE,
 326         EQNPILE_RPILE,
 327         EQNPILE_LPILE,
 328         EQNPILE__MAX
 329 };
 330
 331  /*
 332  * A "box" is a parsed mathematical expression as defined by the eqn.7
 333  * grammar.
 334  */
 335 struct  eqn_box {
 336         int               size; /* font size of expression */
 337 #define EQN_DEFSIZE       INT_MIN
 338         enum eqn_boxt     type; /* type of node */
 339         struct eqn_box   *first; /* first child node */
 340         struct eqn_box   *last; /* last child node */
 341         struct eqn_box   *next; /* node sibling */
 342         struct eqn_box   *parent; /* node sibling */
 343         char             *text; /* text (or NULL) */
 344         char             *left;
 345         char             *right;
 346         enum eqn_post     pos; /* position of next box */
 347         enum eqn_markt    mark; /* a mark about the box */
 348         enum eqn_fontt    font; /* font of box */
 349         enum eqn_pilet    pile; /* equation piling */
 350         int               above; /* next node is above */
 351 };
 352
 353 /*
 354  * An equation consists of a tree of expressions starting at a given
 355  * line and position.
 356  */
 357 struct  eqn {
 358         struct eqn_box   *root; /* root mathematical expression */
 359         int               ln; /* invocation line */
 360         int               pos; /* invocation position */
 361 };
 362
 363 /*
 364  * The type of parse sequence.  This value is usually passed via the
 365  * mandoc(1) command line of -man and -mdoc.  It's almost exclusively
 366  * -mandoc but the others have been retained for compatibility.
 367  */
 368 enum    mparset {
 369         MPARSE_AUTO, /* magically determine the document type */
 370         MPARSE_MDOC, /* assume -mdoc */
 371         MPARSE_MAN /* assume -man */
 372 };
 373
 374 enum    mandoc_esc {
 375         ESCAPE_ERROR = 0, /* bail! unparsable escape */
 376         ESCAPE_IGNORE, /* escape to be ignored */
 377         ESCAPE_SPECIAL, /* a regular special character */
 378         ESCAPE_FONT, /* a generic font mode */
 379         ESCAPE_FONTBOLD, /* bold font mode */
 380         ESCAPE_FONTITALIC, /* italic font mode */
 381         ESCAPE_FONTROMAN, /* roman font mode */
 382         ESCAPE_FONTPREV, /* previous font mode */
 383         ESCAPE_NUMBERED, /* a numbered glyph */
 384         ESCAPE_UNICODE, /* a unicode codepoint */
 385         ESCAPE_NOSPACE /* suppress space if the last on a line */
 386 };
 387
 388 typedef void    (*mandocmsg)(enum mandocerr, enum mandoclevel,
 389                         const char *, int, int, const char *);
 390
 391 struct  mparse;
 392 struct  mchars;
 393 struct  mdoc;
 394 struct  man;
 395
 396 __BEGIN_DECLS
 397
 398 void              mparse_free(struct mparse *);
 399 void              mparse_reset(struct mparse *);
 400 struct mparse    *mparse_alloc(enum mparset,
 401                         enum mandoclevel, mandocmsg, void *);
 402 enum mandoclevel  mparse_readfd(struct mparse *, int, const char *);
 403 void              mparse_result(struct mparse *, struct mdoc **, struct man **);
 404 const char       *mparse_strerror(enum mandocerr);
 405 const char       *mparse_strlevel(enum mandoclevel);
 406
 407 void             *mandoc_calloc(size_t, size_t);
 408 void             *mandoc_malloc(size_t);
 409 void             *mandoc_realloc(void *, size_t);
 410 char             *mandoc_strdup(const char *);
 411 char             *mandoc_strndup(const char *, size_t);
 412
 413 enum mandoc_esc   mandoc_escape(const char **, const char **, int *);
 414
 415 struct mchars    *mchars_alloc(void);
 416 char              mchars_num2char(const char *, size_t);
 417 int               mchars_num2uc(const char *, size_t);
 418 const char       *mchars_spec2str(struct mchars *, const char *, size_t, size_t *);
 419 int               mchars_spec2cp(struct mchars *, const char *, size_t);
 420 void              mchars_free(struct mchars *);
 421
 422
 423 __END_DECLS
 424
 425 #endif /*!MANDOC_H*/