mandoc.h

   1 /* $Id: mandoc.h,v 1.268 2020/04/24 12:02:33 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2012-2020 Ingo Schwarze <schwarze@openbsd.org>
   4  * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  * Error handling, escape sequence, and character utilities.
  19  * Can be used by all code in the mandoc package.
  20  */
  21
  22 #define ASCII_NBRSP      31  /* non-breaking space */
  23 #define ASCII_HYPH       30  /* breakable hyphen */
  24 #define ASCII_BREAK      29  /* breakable zero-width space */
  25
  26 /*
  27  * Status level.  This refers to both internal status (i.e., whilst
  28  * running, when warnings/errors are reported) and an indicator of a
  29  * threshold of when to halt (when said internal state exceeds the
  30  * threshold).
  31  */
  32 enum    mandoclevel {
  33         MANDOCLEVEL_OK = 0,
  34         MANDOCLEVEL_STYLE, /* style suggestions */
  35         MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
  36         MANDOCLEVEL_ERROR, /* input has been thrown away */
  37         MANDOCLEVEL_UNSUPP, /* input needs unimplemented features */
  38         MANDOCLEVEL_BADARG, /* bad argument in invocation */
  39         MANDOCLEVEL_SYSERR, /* system error */
  40         MANDOCLEVEL_MAX
  41 };
  42
  43 /*
  44  * All possible things that can go wrong within a parse, be it libroff,
  45  * libmdoc, or libman.
  46  */
  47 enum    mandocerr {
  48         MANDOCERR_OK,
  49
  50         MANDOCERR_BASE, /* ===== start of base system conventions ===== */
  51
  52         MANDOCERR_MDOCDATE, /* Mdocdate found: Dd ... */
  53         MANDOCERR_MDOCDATE_MISSING, /* Mdocdate missing: Dd ... */
  54         MANDOCERR_ARCH_BAD,  /* unknown architecture: Dt ... arch */
  55         MANDOCERR_OS_ARG,  /* operating system explicitly specified: Os ... */
  56         MANDOCERR_RCS_MISSING, /* RCS id missing */
  57         MANDOCERR_XR_BAD,  /* referenced manual not found: Xr name sec */
  58
  59         MANDOCERR_STYLE, /* ===== start of style suggestions ===== */
  60
  61         MANDOCERR_DATE_LEGACY, /* legacy man(7) date format: Dd ... */
  62         MANDOCERR_DATE_NORM, /* normalizing date format to: ... */
  63         MANDOCERR_TITLE_CASE, /* lower case character in document title */
  64         MANDOCERR_RCS_REP, /* duplicate RCS id: ... */
  65         MANDOCERR_SEC_TYPO,  /* possible typo in section name: Sh ... */
  66         MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */
  67         MANDOCERR_MACRO_USELESS, /* useless macro: macro */
  68         MANDOCERR_BX, /* consider using OS macro: macro */
  69         MANDOCERR_ER_ORDER, /* errnos out of order: Er ... */
  70         MANDOCERR_ER_REP, /* duplicate errno: Er ... */
  71         MANDOCERR_DELIM, /* trailing delimiter: macro ... */
  72         MANDOCERR_DELIM_NB, /* no blank before trailing delimiter: macro ... */
  73         MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping: fi */
  74         MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */
  75         MANDOCERR_DASHDASH, /* verbatim "--", maybe consider using \(em */
  76         MANDOCERR_FUNC, /* function name without markup: name() */
  77         MANDOCERR_SPACE_EOL, /* whitespace at end of input line */
  78         MANDOCERR_COMMENT_BAD, /* bad comment style */
  79
  80         MANDOCERR_WARNING, /* ===== start of warnings ===== */
  81
  82         /* related to the prologue */
  83         MANDOCERR_DT_NOTITLE, /* missing manual title, using UNTITLED: line */
  84         MANDOCERR_TH_NOTITLE, /* missing manual title, using "": [macro] */
  85         MANDOCERR_MSEC_MISSING, /* missing manual section, using "": macro */
  86         MANDOCERR_MSEC_BAD, /* unknown manual section: Dt ... section */
  87         MANDOCERR_MSEC_FILE, /* filename/section mismatch: ... */
  88         MANDOCERR_DATE_MISSING, /* missing date, using "": [macro] */
  89         MANDOCERR_DATE_BAD, /* cannot parse date, using it verbatim: date */
  90         MANDOCERR_DATE_FUTURE, /* date in the future, using it anyway: date */
  91         MANDOCERR_OS_MISSING, /* missing Os macro, using "" */
  92         MANDOCERR_PROLOG_LATE, /* late prologue macro: macro */
  93         MANDOCERR_PROLOG_ORDER, /* prologue macros out of order: macros */
  94
  95         /* related to document structure */
  96         MANDOCERR_SO, /* .so is fragile, better use ln(1): so path */
  97         MANDOCERR_DOC_EMPTY, /* no document body */
  98         MANDOCERR_SEC_BEFORE, /* content before first section header: macro */
  99         MANDOCERR_NAMESEC_FIRST, /* first section is not NAME: Sh title */
 100         MANDOCERR_NAMESEC_NONM, /* NAME section without Nm before Nd */
 101         MANDOCERR_NAMESEC_NOND, /* NAME section without description */
 102         MANDOCERR_NAMESEC_ND, /* description not at the end of NAME */
 103         MANDOCERR_NAMESEC_BAD, /* bad NAME section content: macro */
 104         MANDOCERR_NAMESEC_PUNCT, /* missing comma before name: Nm name */
 105         MANDOCERR_ND_EMPTY, /* missing description line, using "" */
 106         MANDOCERR_ND_LATE, /* description line outside NAME section */
 107         MANDOCERR_SEC_ORDER, /* sections out of conventional order: Sh title */
 108         MANDOCERR_SEC_REP, /* duplicate section title: Sh title */
 109         MANDOCERR_SEC_MSEC, /* unexpected section: Sh title for ... only */
 110         MANDOCERR_XR_SELF,  /* cross reference to self: Xr name sec */
 111         MANDOCERR_XR_ORDER, /* unusual Xr order: ... after ... */
 112         MANDOCERR_XR_PUNCT, /* unusual Xr punctuation: ... after ... */
 113         MANDOCERR_AN_MISSING, /* AUTHORS section without An macro */
 114
 115         /* related to macros and nesting */
 116         MANDOCERR_MACRO_OBS, /* obsolete macro: macro */
 117         MANDOCERR_MACRO_CALL, /* macro neither callable nor escaped: macro */
 118         MANDOCERR_PAR_SKIP, /* skipping paragraph macro: macro ... */
 119         MANDOCERR_PAR_MOVE, /* moving paragraph macro out of list: macro */
 120         MANDOCERR_NS_SKIP, /* skipping no-space macro */
 121         MANDOCERR_BLK_NEST, /* blocks badly nested: macro ... */
 122         MANDOCERR_BD_NEST, /* nested displays are not portable: macro ... */
 123         MANDOCERR_BL_MOVE, /* moving content out of list: macro */
 124         MANDOCERR_TA_LINE, /* first macro on line: Ta */
 125         MANDOCERR_BLK_LINE, /* line scope broken: macro breaks macro */
 126         MANDOCERR_BLK_BLANK, /* skipping blank line in line scope */
 127
 128         /* related to missing arguments */
 129         MANDOCERR_REQ_EMPTY, /* skipping empty request: request */
 130         MANDOCERR_COND_EMPTY, /* conditional request controls empty scope */
 131         MANDOCERR_MACRO_EMPTY, /* skipping empty macro: macro */
 132         MANDOCERR_BLK_EMPTY, /* empty block: macro */
 133         MANDOCERR_ARG_EMPTY, /* empty argument, using 0n: macro arg */
 134         MANDOCERR_BD_NOTYPE, /* missing display type, using -ragged: Bd */
 135         MANDOCERR_BL_LATETYPE, /* list type is not the first argument: Bl arg */
 136         MANDOCERR_BL_NOWIDTH, /* missing -width in -tag list, using 6n */
 137         MANDOCERR_EX_NONAME, /* missing utility name, using "": Ex */
 138         MANDOCERR_FO_NOHEAD, /* missing function name, using "": Fo */
 139         MANDOCERR_IT_NOHEAD, /* empty head in list item: Bl -type It */
 140         MANDOCERR_IT_NOBODY, /* empty list item: Bl -type It */
 141         MANDOCERR_IT_NOARG, /* missing argument, using next line: Bl -c It */
 142         MANDOCERR_BF_NOFONT, /* missing font type, using \fR: Bf */
 143         MANDOCERR_BF_BADFONT, /* unknown font type, using \fR: Bf font */
 144         MANDOCERR_PF_SKIP, /* nothing follows prefix: Pf arg */
 145         MANDOCERR_RS_EMPTY, /* empty reference block: Rs */
 146         MANDOCERR_XR_NOSEC, /* missing section argument: Xr arg */
 147         MANDOCERR_ARG_STD, /* missing -std argument, adding it: macro */
 148         MANDOCERR_OP_EMPTY, /* missing option string, using "": OP */
 149         MANDOCERR_UR_NOHEAD, /* missing resource identifier, using "": UR */
 150         MANDOCERR_EQN_NOBOX, /* missing eqn box, using "": op */
 151
 152         /* related to bad arguments */
 153         MANDOCERR_ARG_REP, /* duplicate argument: macro arg */
 154         MANDOCERR_AN_REP, /* skipping duplicate argument: An -arg */
 155         MANDOCERR_BD_REP, /* skipping duplicate display type: Bd -type */
 156         MANDOCERR_BL_REP, /* skipping duplicate list type: Bl -type */
 157         MANDOCERR_BL_SKIPW, /* skipping -width argument: Bl -type */
 158         MANDOCERR_BL_COL, /* wrong number of cells */
 159         MANDOCERR_AT_BAD, /* unknown AT&T UNIX version: At version */
 160         MANDOCERR_FA_COMMA, /* comma in function argument: arg */
 161         MANDOCERR_FN_PAREN, /* parenthesis in function name: arg */
 162         MANDOCERR_LB_BAD, /* unknown library name: Lb ... */
 163         MANDOCERR_RS_BAD, /* invalid content in Rs block: macro */
 164         MANDOCERR_SM_BAD, /* invalid Boolean argument: macro arg */
 165         MANDOCERR_CHAR_FONT, /* argument contains two font escapes */
 166         MANDOCERR_FT_BAD, /* unknown font, skipping request: ft font */
 167         MANDOCERR_TR_ODD, /* odd number of characters in request: tr char */
 168
 169         /* related to plain text */
 170         MANDOCERR_FI_BLANK, /* blank line in fill mode, using .sp */
 171         MANDOCERR_FI_TAB, /* tab in filled text */
 172         MANDOCERR_EOS, /* new sentence, new line */
 173         MANDOCERR_ESC_BAD, /* invalid escape sequence: esc */
 174         MANDOCERR_ESC_UNDEF, /* undefined escape, printing literally: char */
 175         MANDOCERR_STR_UNDEF, /* undefined string, using "": name */
 176
 177         /* related to tables */
 178         MANDOCERR_TBLLAYOUT_SPAN, /* tbl line starts with span */
 179         MANDOCERR_TBLLAYOUT_DOWN, /* tbl column starts with span */
 180         MANDOCERR_TBLLAYOUT_VERT, /* skipping vertical bar in tbl layout */
 181
 182         MANDOCERR_ERROR, /* ===== start of errors ===== */
 183
 184         /* related to tables */
 185         MANDOCERR_TBLOPT_ALPHA, /* non-alphabetic character in tbl options */
 186         MANDOCERR_TBLOPT_BAD, /* skipping unknown tbl option: option */
 187         MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument: option */
 188         MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size: option */
 189         MANDOCERR_TBLLAYOUT_NONE, /* empty tbl layout */
 190         MANDOCERR_TBLLAYOUT_CHAR, /* invalid character in tbl layout: char */
 191         MANDOCERR_TBLLAYOUT_PAR, /* unmatched parenthesis in tbl layout */
 192         MANDOCERR_TBLDATA_NONE, /* tbl without any data cells */
 193         MANDOCERR_TBLDATA_SPAN, /* ignoring data in spanned tbl cell: data */
 194         MANDOCERR_TBLDATA_EXTRA, /* ignoring extra tbl data cells: data */
 195         MANDOCERR_TBLDATA_BLK, /* data block open at end of tbl: macro */
 196
 197         /* related to document structure and macros */
 198         MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */
 199         MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */
 200         MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
 201         MANDOCERR_CHAR_BAD, /* skipping bad character: number */
 202         MANDOCERR_MACRO, /* skipping unknown macro: macro */
 203         MANDOCERR_REQ_NOMAC, /* skipping request outside macro: ... */
 204         MANDOCERR_REQ_INSEC, /* skipping insecure request: request */
 205         MANDOCERR_IT_STRAY, /* skipping item outside list: It ... */
 206         MANDOCERR_TA_STRAY, /* skipping column outside column list: Ta */
 207         MANDOCERR_BLK_NOTOPEN, /* skipping end of block that is not open */
 208         MANDOCERR_RE_NOTOPEN, /* fewer RS blocks open, skipping: RE arg */
 209         MANDOCERR_BLK_BROKEN, /* inserting missing end of block: macro ... */
 210         MANDOCERR_BLK_NOEND, /* appending missing end of block: macro */
 211
 212         /* related to request and macro arguments */
 213         MANDOCERR_NAMESC, /* escaped character not allowed in a name: name */
 214         MANDOCERR_ARG_UNDEF, /* using macro argument outside macro */
 215         MANDOCERR_ARG_NONUM, /* argument number is not numeric */
 216         MANDOCERR_BD_FILE, /* NOT IMPLEMENTED: Bd -file */
 217         MANDOCERR_BD_NOARG, /* skipping display without arguments: Bd */
 218         MANDOCERR_BL_NOTYPE, /* missing list type, using -item: Bl */
 219         MANDOCERR_CE_NONUM, /* argument is not numeric, using 1: ce ... */
 220         MANDOCERR_CHAR_ARG, /* argument is not a character: char ... */
 221         MANDOCERR_NM_NONAME, /* missing manual name, using "": Nm */
 222         MANDOCERR_OS_UNAME, /* uname(3) system call failed, using UNKNOWN */
 223         MANDOCERR_ST_BAD, /* unknown standard specifier: St standard */
 224         MANDOCERR_IT_NONUM, /* skipping request without numeric argument */
 225         MANDOCERR_SHIFT, /* excessive shift: ..., but max is ... */
 226         MANDOCERR_SO_PATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
 227         MANDOCERR_SO_FAIL, /* .so request failed */
 228         MANDOCERR_TG_SPC, /* skipping tag containing whitespace: tag */
 229         MANDOCERR_ARG_SKIP, /* skipping all arguments: macro args */
 230         MANDOCERR_ARG_EXCESS, /* skipping excess arguments: macro ... args */
 231         MANDOCERR_DIVZERO, /* divide by zero */
 232
 233         MANDOCERR_UNSUPP, /* ===== start of unsupported features ===== */
 234
 235         MANDOCERR_TOOLARGE, /* input too large */
 236         MANDOCERR_CHAR_UNSUPP, /* unsupported control character: number */
 237         MANDOCERR_ESC_UNSUPP, /* unsupported escape sequence: escape */
 238         MANDOCERR_REQ_UNSUPP, /* unsupported roff request: request */
 239         MANDOCERR_WHILE_NEST, /* nested .while loops */
 240         MANDOCERR_WHILE_OUTOF, /* end of scope with open .while loop */
 241         MANDOCERR_WHILE_INTO, /* end of .while loop in inner scope */
 242         MANDOCERR_WHILE_FAIL, /* cannot continue this .while loop */
 243         MANDOCERR_TBLOPT_EQN, /* eqn delim option in tbl: arg */
 244         MANDOCERR_TBLLAYOUT_MOD, /* unsupported tbl layout modifier: m */
 245         MANDOCERR_TBLMACRO, /* ignoring macro in table: macro */
 246
 247         MANDOCERR_BADARG, /* ===== start of bad invocations ===== */
 248
 249         MANDOCERR_BADARG_BAD, /* bad argument */
 250         MANDOCERR_BADARG_DUPE, /* duplicate argument */
 251         MANDOCERR_BADVAL, /* does not take a value */
 252         MANDOCERR_BADVAL_MISS, /* missing argument value */
 253         MANDOCERR_BADVAL_BAD, /* bad argument value */
 254         MANDOCERR_BADVAL_DUPE, /* duplicate argument value */
 255         MANDOCERR_TAG, /* no such tag */
 256
 257         MANDOCERR_SYSERR, /* ===== start of system errors ===== */
 258
 259         MANDOCERR_DUP,
 260         MANDOCERR_EXEC,
 261         MANDOCERR_FDOPEN,
 262         MANDOCERR_FFLUSH,
 263         MANDOCERR_FORK,
 264         MANDOCERR_FSTAT,
 265         MANDOCERR_GETLINE,
 266         MANDOCERR_GLOB,
 267         MANDOCERR_GZCLOSE,
 268         MANDOCERR_GZDOPEN,
 269         MANDOCERR_MKSTEMP,
 270         MANDOCERR_OPEN,
 271         MANDOCERR_PLEDGE,
 272         MANDOCERR_READ,
 273         MANDOCERR_WAIT,
 274         MANDOCERR_WRITE,
 275
 276         MANDOCERR_MAX
 277 };
 278
 279 enum    mandoc_esc {
 280         ESCAPE_ERROR = 0, /* bail! unparsable escape */
 281         ESCAPE_UNSUPP, /* unsupported escape; ignore it */
 282         ESCAPE_IGNORE, /* escape to be ignored */
 283         ESCAPE_UNDEF, /* undefined escape; print literal character */
 284         ESCAPE_SPECIAL, /* a regular special character */
 285         ESCAPE_FONT, /* a generic font mode */
 286         ESCAPE_FONTBOLD, /* bold font mode */
 287         ESCAPE_FONTITALIC, /* italic font mode */
 288         ESCAPE_FONTBI, /* bold italic font mode */
 289         ESCAPE_FONTROMAN, /* roman font mode */
 290         ESCAPE_FONTCW, /* constant width font mode */
 291         ESCAPE_FONTPREV, /* previous font mode */
 292         ESCAPE_NUMBERED, /* a numbered glyph */
 293         ESCAPE_UNICODE, /* a unicode codepoint */
 294         ESCAPE_DEVICE, /* print the output device name */
 295         ESCAPE_BREAK, /* break the output line */
 296         ESCAPE_NOSPACE, /* suppress space if the last on a line */
 297         ESCAPE_HORIZ, /* horizontal movement */
 298         ESCAPE_HLINE, /* horizontal line drawing */
 299         ESCAPE_SKIPCHAR, /* skip the next character */
 300         ESCAPE_OVERSTRIKE /* overstrike all chars in the argument */
 301 };
 302
 303
 304 enum mandoc_esc   mandoc_font(const char *, int);
 305 enum mandoc_esc   mandoc_escape(const char **, const char **, int *);
 306 void              mandoc_msg_setoutfile(FILE *);
 307 const char       *mandoc_msg_getinfilename(void);
 308 void              mandoc_msg_setinfilename(const char *);
 309 enum mandocerr    mandoc_msg_getmin(void);
 310 void              mandoc_msg_setmin(enum mandocerr);
 311 enum mandoclevel  mandoc_msg_getrc(void);
 312 void              mandoc_msg_setrc(enum mandoclevel);
 313 void              mandoc_msg(enum mandocerr, int, int, const char *, ...)
 314                         __attribute__((__format__ (__printf__, 4, 5)));
 315 void              mandoc_msg_summary(void);
 316 void              mchars_alloc(void);
 317 void              mchars_free(void);
 318 int               mchars_num2char(const char *, size_t);
 319 const char       *mchars_uc2str(int);
 320 int               mchars_num2uc(const char *, size_t);
 321 int               mchars_spec2cp(const char *, size_t);
 322 const char       *mchars_spec2str(const char *, size_t, size_t *);