mdw@git.distorted.org.uk Git - sgt/halibut/blob - halibut.h

   1 #ifndef HALIBUT_HALIBUT_H
   2 #define HALIBUT_HALIBUT_H
   3
   4 #include <stdio.h>
   5 #include <wchar.h>
   6 #include <time.h>
   7 #include <string.h>
   8
   9 #include "charset.h"
  10
  11 #ifdef __GNUC__
  12 #define NORETURN __attribute__((__noreturn__))
  13 #else
  14 #define NORETURN /* nothing */
  15 #endif
  16
  17 #ifndef TRUE
  18 #define TRUE 1
  19 #endif
  20 #ifndef FALSE
  21 #define FALSE 0
  22 #endif
  23
  24 /* For suppressing unused-parameter warnings */
  25 #define IGNORE(x) ( (x) = (x) )
  26
  27 #include "tree234.h"
  28
  29 /*
  30  * Structure tags
  31  */
  32 typedef struct input_Tag input;
  33 typedef struct filepos_Tag filepos;
  34 typedef struct paragraph_Tag paragraph;
  35 typedef struct word_Tag word;
  36 typedef struct keywordlist_Tag keywordlist;
  37 typedef struct keyword_Tag keyword;
  38 typedef struct numberstate_Tag numberstate;
  39 typedef struct indexdata_Tag indexdata;
  40 typedef struct indextag_Tag indextag;
  41 typedef struct indexentry_Tag indexentry;
  42 typedef struct macrostack_Tag macrostack;
  43
  44 /*
  45  * Data structure to hold a file name and index, a line and a
  46  * column number, for reporting errors
  47  */
  48 struct filepos_Tag {
  49     char *filename;
  50     int line, col;
  51 };
  52
  53 /*
  54  * Data structure to hold all the file names etc for input
  55  */
  56 typedef struct pushback_Tag {
  57     int chr;
  58     filepos pos;
  59 } pushback;
  60 struct input_Tag {
  61     char **filenames;                  /* complete list of input files */
  62     int nfiles;                        /* how many in the list */
  63     FILE *currfp;                      /* the currently open one */
  64     int currindex;                     /* which one is that in the list */
  65     pushback *pushback;                /* pushed-back input characters */
  66     int npushback, pushbacksize;
  67     filepos pos;
  68     int reportcols;                    /* report column numbers in errors */
  69     macrostack *stack;                 /* macro expansions in force */
  70     int defcharset, charset;           /* character sets for input files */
  71     charset_state csstate;
  72     wchar_t wc[16];                    /* wide chars from input conversion */
  73     int nwc, wcpos;                    /* size of, and position in, wc[] */
  74     char *pushback_chars;              /* used to save input-encoding data */
  75 };
  76
  77 /*
  78  * Data structure to hold the input form of the source, ie a linked
  79  * list of paragraphs
  80  */
  81 struct paragraph_Tag {
  82     paragraph *next;
  83     int type;
  84     wchar_t *keyword;                  /* for most special paragraphs */
  85     char *origkeyword;                 /* same again in original charset */
  86     word *words;                       /* list of words in paragraph */
  87     int aux;                           /* number, in a numbered paragraph
  88                                         * or subsection level
  89                                         */
  90     word *kwtext;                      /* chapter/section indication */
  91     word *kwtext2;                     /* numeric-only form of kwtext */
  92     filepos fpos;
  93
  94     paragraph *parent, *child, *sibling;   /* for hierarchy navigation */
  95
  96     void *private_data;                /* for temp use in backends */
  97 };
  98 enum {
  99     para_IM,                           /* index merge */
 100     para_BR,                           /* bibliography rewrite */
 101     para_Rule,                         /* random horizontal rule */
 102     para_Chapter,
 103     para_Appendix,
 104     para_UnnumberedChapter,
 105     para_Heading,
 106     para_Subsect,
 107     para_Normal,
 108     para_Biblio,                       /* causes no output unless turned ... */
 109     para_BiblioCited,                  /*  ... into this paragraph type */
 110     para_Bullet,
 111     para_NumberedList,
 112     para_DescribedThing,
 113     para_Description,
 114     para_Code,
 115     para_Copyright,
 116     para_NoCite,
 117     para_Title,
 118     para_VersionID,
 119     para_Config,                       /* configuration directive */
 120     para_LcontPush,                    /* begin continuation of list item */
 121     para_LcontPop,                     /* end continuation of list item */
 122     para_QuotePush,                    /* begin block quote */
 123     para_QuotePop,                     /* end block quote */
 124     /*
 125      * Back ends may define their own paragraph types beyond here,
 126      * in case they need to use them internally.
 127      */
 128     para_NotParaType                   /* placeholder value */
 129 };
 130
 131 /*
 132  * Data structure to hold an individual word
 133  */
 134 struct word_Tag {
 135     word *next, *alt;
 136     int type;
 137     int aux;
 138     int breaks;                        /* can a line break after it? */
 139     wchar_t *text;
 140     filepos fpos;
 141
 142     void *private_data;                /* for temp use in backends */
 143 };
 144 enum {
 145     /* ORDERING CONSTRAINT: these normal-word types ... */
 146     word_Normal,
 147     word_Emph,
 148     word_Code,                         /* monospaced; `quoted' in text */
 149     word_WeakCode,                     /* monospaced, normal in text */
 150     /* ... must be in the same order as these space types ... */
 151     word_WhiteSpace,                   /* text is NULL or ignorable */
 152     word_EmphSpace,                    /* WhiteSpace when emphasised */
 153     word_CodeSpace,                    /* WhiteSpace when code */
 154     word_WkCodeSpace,                  /* WhiteSpace when weak code */
 155     /* ... and must be in the same order as these quote types ... */
 156     word_Quote,                        /* text is NULL or ignorable */
 157     word_EmphQuote,                    /* Quote when emphasised */
 158     word_CodeQuote,                    /* (can't happen) */
 159     word_WkCodeQuote,                  /* (can't happen) */
 160     /* END ORDERING CONSTRAINT */
 161     word_internal_endattrs,
 162     word_UpperXref,                    /* \K */
 163     word_LowerXref,                    /* \k */
 164     word_XrefEnd,                      /* (invisible; no text) */
 165     word_IndexRef,                     /* (always an invisible one) */
 166     word_HyperLink,                    /* (invisible) */
 167     word_HyperEnd,                     /* (also invisible; no text) */
 168     /*
 169      * Back ends may define their own word types beyond here, in
 170      * case they need to use them internally.
 171      */
 172     word_NotWordType                   /* placeholder value */
 173 };
 174 /* aux values for attributed words */
 175 enum {
 176     attr_Only   = 0x0000,              /* a lone word with the attribute */
 177     attr_First  = 0x0001,              /* the first of a series */
 178     attr_Last   = 0x0002,              /* the last of a series */
 179     attr_Always = 0x0003,              /* any other part of a series */
 180     attr_mask   = 0x0003
 181 };
 182 /* aux values for quote-type words */
 183 enum {
 184     quote_Open  = 0x0010,
 185     quote_Close = 0x0020,
 186     quote_mask  = 0x0030
 187 };
 188 #define isattr(x) ( ( (x) > word_Normal && (x) < word_WhiteSpace ) || \
 189                     ( (x) > word_WhiteSpace && (x) < word_internal_endattrs ) )
 190 #define sameattr(x,y) ( (((x)-(y)) & 3) == 0 )
 191 #define towordstyle(x) ( word_Normal + ((x) & 3) )
 192 #define tospacestyle(x) ( word_WhiteSpace + ((x) & 3) )
 193 #define toquotestyle(x) ( word_Quote + ((x) & 3) )
 194 #define removeattr(x) ( word_Normal + ((x) &~ 3) )
 195
 196 #define attraux(x) ( (x) & attr_mask )
 197 #define quoteaux(x) ( (x) & quote_mask )
 198
 199 /*
 200  * error.c
 201  */
 202 void fatal(int code, ...) NORETURN;
 203 void error(int code, ...);
 204 enum {
 205     err_nomemory,                      /* out of memory */
 206     err_optnoarg,                      /* option `-%s' requires an argument */
 207     err_nosuchopt,                     /* unrecognised option `-%s' */
 208     err_cmdcharset,                    /* unrecognised charset %s (cmdline) */
 209     err_futileopt,                     /* futile option `-%s'%s */
 210     err_noinput,                       /* no input files */
 211     err_cantopen,                      /* unable to open input file `%s' */
 212     err_nodata,                        /* no data in input files */
 213     err_brokencodepara,                /* line in codepara didn't begin `\c' */
 214     err_kwunclosed,                    /* expected `}' after keyword */
 215     err_kwillegal,                     /* paragraph type expects no keyword */
 216     err_kwexpected,                    /* paragraph type expects a keyword */
 217     err_kwtoomany,                     /* paragraph type expects only 1 */
 218     err_bodyillegal,                   /* paragraph type expects only kws! */
 219     err_badparatype,                   /* invalid command at start of para */
 220     err_badmidcmd,                     /* invalid command in mid-para */
 221     err_unexbrace,                     /* unexpected brace */
 222     err_explbr,                        /* expected `{' after command */
 223     err_commenteof,                    /* EOF inside braced comment */
 224     err_kwexprbr,                      /* expected `}' after cross-ref */
 225     err_codequote,                     /* \q within \c is not supported */
 226     err_missingrbrace,                 /* unclosed braces at end of para */
 227     err_missingrbrace2,                /* unclosed braces at end of file */
 228     err_nestedstyles,                  /* unable to nest text styles */
 229     err_nestedindex,                   /* unable to nest `\i' thingys */
 230     err_indexcase,                     /* two \i differing only in case */
 231     err_nosuchkw,                      /* unresolved cross-reference */
 232     err_multiBR,                       /* multiple \BRs on same keyword */
 233     err_nosuchidxtag,                  /* \IM on unknown index tag (warning) */
 234     err_cantopenw,                     /* can't open output file for write */
 235     err_macroexists,                   /* this macro already exists */
 236     err_sectjump,                      /* jump a heading level, eg \C -> \S */
 237     err_winhelp_ctxclash,              /* WinHelp context ID hash clash */
 238     err_multikw,                       /* keyword clash in sections */
 239     err_misplacedlcont,                /* \lcont not after a list item */
 240     err_sectmarkerinblock,             /* section marker appeared in block */
 241     err_cfginsufarg,                   /* \cfg{%s} insufficient args (<%d) */
 242     err_infonodechar,                  /* colon/comma in node name in info */
 243     err_text_codeline,                 /* \c line too long in text backend */
 244     err_htmlver,                       /* unrecognised HTML version keyword */
 245     err_charset,                       /* unrecognised character set name */
 246     err_nofont,                        /* unrecognised font name */
 247     err_afmeof,                        /* eof in AFM file */
 248     err_afmkey,                        /* missing expected keyword in AFM */
 249     err_afmvers,                       /* unsupported AFM version */
 250     err_afmval,                        /* missing value(s) for AFM key */
 251     err_whatever                       /* random error of another type */
 252 };
 253
 254 /*
 255  * malloc.c
 256  */
 257 #ifdef LOGALLOC
 258 void *smalloc(char *file, int line, int size);
 259 void *srealloc(char *file, int line, void *p, int size);
 260 void sfree(char *file, int line, void *p);
 261 #define smalloc(x) smalloc(__FILE__, __LINE__, x)
 262 #define srealloc(x, y) srealloc(__FILE__, __LINE__, x, y)
 263 #define sfree(x) sfree(__FILE__, __LINE__, x)
 264 #else
 265 void *smalloc(int size);
 266 void *srealloc(void *p, int size);
 267 void sfree(void *p);
 268 #endif
 269 void free_word_list(word *w);
 270 void free_para_list(paragraph *p);
 271 word *dup_word_list(word *w);
 272 char *dupstr(char *s);
 273
 274 #define snew(type) ( (type *) smalloc (sizeof (type)) )
 275 #define snewn(number, type) ( (type *) smalloc ((number) * sizeof (type)) )
 276 #define sresize(array, number, type) \
 277         ( (type *) srealloc ((array), (number) * sizeof (type)) )
 278 #define lenof(array) ( sizeof(array) / sizeof(*(array)) )
 279
 280 /*
 281  * ustring.c
 282  */
 283 wchar_t *ustrdup(wchar_t const *s);
 284 char *ustrtoa(wchar_t const *s, char *outbuf, int size, int charset);
 285 char *ustrtoa_careful(wchar_t const *s, char *outbuf, int size, int charset);
 286 wchar_t *ustrfroma(char const *s, wchar_t *outbuf, int size, int charset);
 287 char *utoa_dup(wchar_t const *s, int charset);
 288 char *utoa_dup_len(wchar_t const *s, int charset, int *len);
 289 char *utoa_careful_dup(wchar_t const *s, int charset);
 290 wchar_t *ufroma_dup(char const *s, int charset);
 291 char *utoa_locale_dup(wchar_t const *s);
 292 wchar_t *ufroma_locale_dup(char const *s);
 293 int ustrlen(wchar_t const *s);
 294 wchar_t *uadv(wchar_t *s);
 295 wchar_t *ustrcpy(wchar_t *dest, wchar_t const *source);
 296 wchar_t *ustrncpy(wchar_t *dest, wchar_t const *source, int n);
 297 wchar_t utolower(wchar_t);
 298 int uisalpha(wchar_t);
 299 int ustrcmp(wchar_t *lhs, wchar_t *rhs);
 300 int ustricmp(wchar_t const *lhs, wchar_t const *rhs);
 301 int ustrnicmp(wchar_t const *lhs, wchar_t const *rhs, int maxlen);
 302 int utoi(wchar_t const *);
 303 double utof(wchar_t const *);
 304 int utob(wchar_t const *);
 305 int uisdigit(wchar_t);
 306 wchar_t *ustrlow(wchar_t *s);
 307 wchar_t *ustrftime(const wchar_t *wfmt, const struct tm *timespec);
 308 int cvt_ok(int charset, const wchar_t *s);
 309 int charset_from_ustr(filepos *fpos, const wchar_t *name);
 310
 311 /*
 312  * wcwidth.c
 313  */
 314 int strwid(char const *s, int charset);
 315 int ustrwid(wchar_t const *s, int charset);
 316
 317 /*
 318  * help.c
 319  */
 320 void help(void);
 321 void usage(void);
 322 void showversion(void);
 323 void listcharsets(void);
 324
 325 /*
 326  * licence.c
 327  */
 328 void licence(void);
 329
 330 /*
 331  * version.c
 332  */
 333 extern const char *const version;
 334
 335 /*
 336  * misc.c
 337  */
 338 char *adv(char *s);
 339
 340 typedef struct stackTag *stack;
 341 stack stk_new(void);
 342 void stk_free(stack);
 343 void stk_push(stack, void *);
 344 void *stk_pop(stack);
 345 void *stk_top(stack);
 346
 347 typedef struct tagRdstring rdstring;
 348 struct tagRdstring {
 349     int pos, size;
 350     wchar_t *text;
 351 };
 352 typedef struct tagRdstringc rdstringc;
 353 struct tagRdstringc {
 354     int pos, size;
 355     char *text;
 356 };
 357 extern const rdstring empty_rdstring;
 358 extern const rdstringc empty_rdstringc;
 359 void rdadd(rdstring *rs, wchar_t c);
 360 void rdadds(rdstring *rs, wchar_t const *p);
 361 wchar_t *rdtrim(rdstring *rs);
 362 void rdaddc(rdstringc *rs, char c);
 363 void rdaddsc(rdstringc *rs, char const *p);
 364 char *rdtrimc(rdstringc *rs);
 365
 366 int compare_wordlists(word *a, word *b);
 367
 368 void mark_attr_ends(word *words);
 369
 370 typedef struct tagWrappedLine wrappedline;
 371 struct tagWrappedLine {
 372     wrappedline *next;
 373     word *begin, *end;                 /* first & last words of line */
 374     int nspaces;                       /* number of whitespaces in line */
 375     int shortfall;                     /* how much shorter than max width */
 376 };
 377 wrappedline *wrap_para(word *, int, int, int (*)(void *, word *), void *, int);
 378 void wrap_free(wrappedline *);
 379 void cmdline_cfg_add(paragraph *cfg, char *string);
 380 paragraph *cmdline_cfg_new(void);
 381 paragraph *cmdline_cfg_simple(char *string, ...);
 382
 383 /*
 384  * input.c
 385  */
 386 paragraph *read_input(input *in, indexdata *idx);
 387
 388 /*
 389  * in_afm.c
 390  */
 391 void read_afm_file(input *in);
 392
 393 /*
 394  * in_pf.c
 395  */
 396 void read_pfa_file(input *in);
 397
 398 /*
 399  * keywords.c
 400  */
 401 struct keywordlist_Tag {
 402     int nkeywords;
 403     int size;
 404     tree234 *keys;                     /* sorted by `key' field */
 405     word **looseends;                  /* non-keyword list element numbers */
 406     int nlooseends;
 407     int looseendssize;
 408 };
 409 struct keyword_Tag {
 410     wchar_t *key;                      /* the keyword itself */
 411     word *text;                        /* "Chapter 2", "Appendix Q"... */
 412                                        /* (NB: filepos are not set) */
 413     paragraph *para;                   /* the paragraph referenced */
 414 };
 415 keyword *kw_lookup(keywordlist *, wchar_t *);
 416 keywordlist *get_keywords(paragraph *);
 417 void free_keywords(keywordlist *);
 418 void subst_keywords(paragraph *, keywordlist *);
 419
 420 /*
 421  * index.c
 422  */
 423
 424 /*
 425  * Data structure to hold both sides of the index.
 426  */
 427 struct indexdata_Tag {
 428     tree234 *tags;                     /* holds type `indextag' */
 429     tree234 *entries;                  /* holds type `indexentry' */
 430 };
 431
 432 /*
 433  * Data structure to hold an index tag (LHS of index).
 434  */
 435 struct indextag_Tag {
 436     wchar_t *name;
 437     word *implicit_text;
 438     filepos implicit_fpos;
 439     word **explicit_texts;
 440     filepos *explicit_fpos;
 441     int nexplicit, explicit_size;
 442     int nrefs;
 443     indexentry **refs;                 /* array of entries referenced by tag */
 444 };
 445
 446 /*
 447  * Data structure to hold an index entry (RHS of index).
 448  */
 449 struct indexentry_Tag {
 450     word *text;
 451     void *backend_data;                /* private to back end */
 452     filepos fpos;
 453 };
 454
 455 indexdata *make_index(void);
 456 void cleanup_index(indexdata *);
 457 /* index_merge takes responsibility for freeing arg 3 iff implicit; never
 458  * takes responsibility for arg 2 */
 459 void index_merge(indexdata *, int is_explicit, wchar_t *, word *, filepos *);
 460 void build_index(indexdata *);
 461 void index_debug(indexdata *);
 462 indextag *index_findtag(indexdata *idx, wchar_t *name);
 463
 464 /*
 465  * contents.c
 466  */
 467 numberstate *number_init(void);
 468 void number_cfg(numberstate *, paragraph *);
 469 word *number_mktext(numberstate *, paragraph *, wchar_t *, int *, int *);
 470 void number_free(numberstate *);
 471
 472 /*
 473  * biblio.c
 474  */
 475 void gen_citations(paragraph *, keywordlist *);
 476
 477 /*
 478  * bk_text.c
 479  */
 480 void text_backend(paragraph *, keywordlist *, indexdata *, void *);
 481 paragraph *text_config_filename(char *filename);
 482
 483 /*
 484  * bk_html.c
 485  */
 486 void html_backend(paragraph *, keywordlist *, indexdata *, void *);
 487 paragraph *html_config_filename(char *filename);
 488
 489 /*
 490  * bk_whlp.c
 491  */
 492 void whlp_backend(paragraph *, keywordlist *, indexdata *, void *);
 493 paragraph *whlp_config_filename(char *filename);
 494
 495 /*
 496  * bk_man.c
 497  */
 498 void man_backend(paragraph *, keywordlist *, indexdata *, void *);
 499 paragraph *man_config_filename(char *filename);
 500
 501 /*
 502  * bk_info.c
 503  */
 504 void info_backend(paragraph *, keywordlist *, indexdata *, void *);
 505 paragraph *info_config_filename(char *filename);
 506
 507 /*
 508  * bk_paper.c
 509  */
 510 void *paper_pre_backend(paragraph *, keywordlist *, indexdata *);
 511
 512 /*
 513  * bk_ps.c
 514  */
 515 void ps_backend(paragraph *, keywordlist *, indexdata *, void *);
 516 paragraph *ps_config_filename(char *filename);
 517
 518 /*
 519  * bk_pdf.c
 520  */
 521 void pdf_backend(paragraph *, keywordlist *, indexdata *, void *);
 522 paragraph *pdf_config_filename(char *filename);
 523
 524 #endif