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
   8 #ifdef __GNUC__
   9 #define NORETURN __attribute__((__noreturn__))
  10 #else
  11 #define NORETURN /* nothing */
  12 #endif
  13
  14 #ifndef TRUE
  15 #define TRUE 1
  16 #endif
  17 #ifndef FALSE
  18 #define FALSE 0
  19 #endif
  20
  21 /* For suppressing unused-parameter warnings */
  22 #define IGNORE(x) ( (x) = (x) )
  23
  24 #include "tree234.h"
  25
  26 /*
  27  * Structure tags
  28  */
  29 typedef struct input_Tag input;
  30 typedef struct filepos_Tag filepos;
  31 typedef struct paragraph_Tag paragraph;
  32 typedef struct word_Tag word;
  33 typedef struct keywordlist_Tag keywordlist;
  34 typedef struct keyword_Tag keyword;
  35 typedef struct userstyle_Tag userstyle;
  36 typedef struct numberstate_Tag numberstate;
  37 typedef struct indexdata_Tag indexdata;
  38 typedef struct indextag_Tag indextag;
  39 typedef struct indexentry_Tag indexentry;
  40 typedef struct macrostack_Tag macrostack;
  41
  42 /*
  43  * Data structure to hold a file name and index, a line and a
  44  * column number, for reporting errors
  45  */
  46 struct filepos_Tag {
  47     char *filename;
  48     int line, col;
  49 };
  50
  51 /*
  52  * Data structure to hold all the file names etc for input
  53  */
  54 typedef struct pushback_Tag {
  55     int chr;
  56     filepos pos;
  57 } pushback;
  58 struct input_Tag {
  59     char **filenames;                  /* complete list of input files */
  60     int nfiles;                        /* how many in the list */
  61     FILE *currfp;                      /* the currently open one */
  62     int currindex;                     /* which one is that in the list */
  63     pushback *pushback;                /* pushed-back input characters */
  64     int npushback, pushbacksize;
  65     filepos pos;
  66     int reportcols;                    /* report column numbers in errors */
  67     macrostack *stack;                 /* macro expansions in force */
  68 };
  69
  70 /*
  71  * Data structure to hold the input form of the source, ie a linked
  72  * list of paragraphs
  73  */
  74 struct paragraph_Tag {
  75     paragraph *next;
  76     int type;
  77     wchar_t *keyword;                  /* for most special paragraphs */
  78     word *words;                       /* list of words in paragraph */
  79     int aux;                           /* number, in a numbered paragraph
  80                                         * or subsection level
  81                                         */
  82     word *kwtext;                      /* chapter/section indication */
  83     word *kwtext2;                     /* numeric-only form of kwtext */
  84     filepos fpos;
  85
  86     paragraph *parent, *child, *sibling;   /* for hierarchy navigation */
  87
  88     void *private_data;                /* for temp use in backends */
  89 };
  90 enum {
  91     para_IM,                           /* index merge */
  92     para_BR,                           /* bibliography rewrite */
  93     para_Rule,                         /* random horizontal rule */
  94     para_Chapter,
  95     para_Appendix,
  96     para_UnnumberedChapter,
  97     para_Heading,
  98     para_Subsect,
  99     para_Normal,
 100     para_Biblio,                       /* causes no output unless turned ... */
 101     para_BiblioCited,                  /*  ... into this paragraph type */
 102     para_Bullet,
 103     para_NumberedList,
 104     para_Code,
 105     para_Copyright,
 106     para_Preamble,
 107     para_NoCite,
 108     para_Title,
 109     para_VersionID,
 110     para_Config,                       /* configuration directive */
 111     para_NotParaType                   /* placeholder value */
 112 };
 113
 114 /*
 115  * Data structure to hold an individual word
 116  */
 117 struct word_Tag {
 118     word *next, *alt;
 119     int type;
 120     int aux;
 121     int breaks;                        /* can a line break after it? */
 122     wchar_t *text;
 123     filepos fpos;
 124 };
 125 enum {
 126     /* ORDERING CONSTRAINT: these normal-word types ... */
 127     word_Normal,
 128     word_Emph,
 129     word_Code,                         /* monospaced; `quoted' in text */
 130     word_WeakCode,                     /* monospaced, normal in text */
 131     /* ... must be in the same order as these space types ... */
 132     word_WhiteSpace,                   /* text is NULL or ignorable */
 133     word_EmphSpace,                    /* WhiteSpace when emphasised */
 134     word_CodeSpace,                    /* WhiteSpace when code */
 135     word_WkCodeSpace,                  /* WhiteSpace when weak code */
 136     /* ... and must be in the same order as these quote types ... */
 137     word_Quote,                        /* text is NULL or ignorable */
 138     word_EmphQuote,                    /* Quote when emphasised */
 139     word_CodeQuote,                    /* (can't happen) */
 140     word_WkCodeQuote,                  /* (can't happen) */
 141     /* END ORDERING CONSTRAINT */
 142     word_internal_endattrs,
 143     word_UpperXref,                    /* \K */
 144     word_LowerXref,                    /* \k */
 145     word_XrefEnd,                      /* (invisible; no text) */
 146     word_IndexRef,                     /* (always an invisible one) */
 147     word_HyperLink,                    /* (invisible) */
 148     word_HyperEnd                      /* (also invisible; no text) */
 149 };
 150 /* aux values for attributed words */
 151 enum {
 152     attr_Only   = 0x0000,              /* a lone word with the attribute */
 153     attr_First  = 0x0001,              /* the first of a series */
 154     attr_Last   = 0x0002,              /* the last of a series */
 155     attr_Always = 0x0003,              /* any other part of a series */
 156     attr_mask   = 0x0003,
 157 };
 158 /* aux values for quote-type words */
 159 enum {
 160     quote_Open  = 0x0010,
 161     quote_Close = 0x0020,
 162     quote_mask  = 0x0030,
 163 };
 164 #define isattr(x) ( ( (x) > word_Normal && (x) < word_WhiteSpace ) || \
 165                     ( (x) > word_WhiteSpace && (x) < word_internal_endattrs ) )
 166 #define sameattr(x,y) ( (((x)-(y)) & 3) == 0 )
 167 #define towordstyle(x) ( word_Normal + ((x) & 3) )
 168 #define tospacestyle(x) ( word_WhiteSpace + ((x) & 3) )
 169 #define toquotestyle(x) ( word_Quote + ((x) & 3) )
 170 #define removeattr(x) ( word_Normal + ((x) &~ 3) )
 171
 172 #define attraux(x) ( (x) & attr_mask )
 173 #define quoteaux(x) ( (x) & quote_mask )
 174
 175 /*
 176  * error.c
 177  */
 178 void fatal(int code, ...) NORETURN;
 179 void error(int code, ...);
 180 enum {
 181     err_nomemory,                      /* out of memory */
 182     err_optnoarg,                      /* option `-%s' requires an argument */
 183     err_nosuchopt,                     /* unrecognised option `-%s' */
 184     err_noinput,                       /* no input files */
 185     err_cantopen,                      /* unable to open input file `%s' */
 186     err_nodata,                        /* no data in input files */
 187     err_brokencodepara,                /* line in codepara didn't begin `\c' */
 188     err_kwunclosed,                    /* expected `}' after keyword */
 189     err_kwillegal,                     /* paragraph type expects no keyword */
 190     err_kwexpected,                    /* paragraph type expects a keyword */
 191     err_kwtoomany,                     /* paragraph type expects only 1 */
 192     err_bodyillegal,                   /* paragraph type expects only kws! */
 193     err_badparatype,                   /* invalid command at start of para */
 194     err_badmidcmd,                     /* invalid command in mid-para */
 195     err_unexbrace,                     /* unexpected brace */
 196     err_explbr,                        /* expected `{' after command */
 197     err_commenteof,                    /* EOF inside braced comment */
 198     err_kwexprbr,                      /* expected `}' after cross-ref */
 199     err_missingrbrace,                 /* unclosed braces at end of para */
 200     err_nestedstyles,                  /* unable to nest text styles */
 201     err_nestedindex,                   /* unable to nest `\i' thingys */
 202     err_nosuchkw,                      /* unresolved cross-reference */
 203     err_multiBR,                       /* multiple \BRs on same keyword */
 204     err_nosuchidxtag,                  /* \IM on unknown index tag (warning) */
 205     err_cantopenw,                     /* can't open output file for write */
 206     err_macroexists,                   /* this macro already exists */
 207     err_sectjump,                      /* jump a heading level, eg \C -> \S */
 208     err_winhelp_ctxclash,              /* WinHelp context ID hash clash */
 209     err_multikw,                       /* keyword clash in sections */
 210     err_whatever                       /* random error of another type */
 211 };
 212
 213 /*
 214  * malloc.c
 215  */
 216 #ifdef LOGALLOC
 217 void *smalloc(char *file, int line, int size);
 218 void *srealloc(char *file, int line, void *p, int size);
 219 void sfree(char *file, int line, void *p);
 220 #define smalloc(x) smalloc(__FILE__, __LINE__, x)
 221 #define srealloc(x, y) srealloc(__FILE__, __LINE__, x, y)
 222 #define sfree(x) sfree(__FILE__, __LINE__, x)
 223 #else
 224 void *smalloc(int size);
 225 void *srealloc(void *p, int size);
 226 void sfree(void *p);
 227 #endif
 228 void free_word_list(word *w);
 229 void free_para_list(paragraph *p);
 230 word *dup_word_list(word *w);
 231 char *dupstr(char *s);
 232
 233 #define mknew(type) ( (type *) smalloc (sizeof (type)) )
 234 #define mknewa(type, number) ( (type *) smalloc ((number) * sizeof (type)) )
 235 #define resize(array, len) ( srealloc ((array), (len) * sizeof (*(array))) )
 236 #define lenof(array) ( sizeof(array) / sizeof(*(array)) )
 237
 238 /*
 239  * ustring.c
 240  */
 241 wchar_t *ustrdup(wchar_t *s);
 242 char *ustrtoa(wchar_t *s, char *outbuf, int size);
 243 int ustrlen(wchar_t *s);
 244 wchar_t *uadv(wchar_t *s);
 245 wchar_t *ustrcpy(wchar_t *dest, wchar_t *source);
 246 wchar_t utolower(wchar_t);
 247 int ustrcmp(wchar_t *lhs, wchar_t *rhs);
 248 int ustricmp(wchar_t *lhs, wchar_t *rhs);
 249 int utoi(wchar_t *);
 250 int utob(wchar_t *);
 251 int uisdigit(wchar_t);
 252 wchar_t *ustrlow(wchar_t *s);
 253 wchar_t *ustrftime(wchar_t *fmt, struct tm *timespec);
 254
 255 /*
 256  * help.c
 257  */
 258 void help(void);
 259 void usage(void);
 260 void showversion(void);
 261
 262 /*
 263  * licence.c
 264  */
 265 void licence(void);
 266
 267 /*
 268  * version.c
 269  */
 270 const char *const version;
 271
 272 /*
 273  * misc.c
 274  */
 275 typedef struct stackTag *stack;
 276 stack stk_new(void);
 277 void stk_free(stack);
 278 void stk_push(stack, void *);
 279 void *stk_pop(stack);
 280
 281 typedef struct tagRdstring rdstring;
 282 struct tagRdstring {
 283     int pos, size;
 284     wchar_t *text;
 285 };
 286 typedef struct tagRdstringc rdstringc;
 287 struct tagRdstringc {
 288     int pos, size;
 289     char *text;
 290 };
 291 extern const rdstring empty_rdstring;
 292 extern const rdstringc empty_rdstringc;
 293 void rdadd(rdstring *rs, wchar_t c);
 294 void rdadds(rdstring *rs, wchar_t *p);
 295 wchar_t *rdtrim(rdstring *rs);
 296 void rdaddc(rdstringc *rs, char c);
 297 void rdaddsc(rdstringc *rs, char *p);
 298 char *rdtrimc(rdstringc *rs);
 299
 300 int compare_wordlists(word *a, word *b);
 301
 302 void mark_attr_ends(paragraph *sourceform);
 303
 304 typedef struct tagWrappedLine wrappedline;
 305 struct tagWrappedLine {
 306     wrappedline *next;
 307     word *begin, *end;                 /* first & last words of line */
 308     int nspaces;                       /* number of whitespaces in line */
 309     int shortfall;                     /* how much shorter than max width */
 310 };
 311 wrappedline *wrap_para(word *, int, int, int (*)(word *));
 312 void wrap_free(wrappedline *);
 313
 314 /*
 315  * input.c
 316  */
 317 paragraph *read_input(input *in, indexdata *idx);
 318
 319 /*
 320  * keywords.c
 321  */
 322 struct keywordlist_Tag {
 323     int nkeywords;
 324     int size;
 325     tree234 *keys;                     /* sorted by `key' field */
 326     word **looseends;                  /* non-keyword list element numbers */
 327     int nlooseends;
 328     int looseendssize;
 329 };
 330 struct keyword_Tag {
 331     wchar_t *key;                      /* the keyword itself */
 332     word *text;                        /* "Chapter 2", "Appendix Q"... */
 333                                        /* (NB: filepos are not set) */
 334     paragraph *para;                   /* the paragraph referenced */
 335 };
 336 keyword *kw_lookup(keywordlist *, wchar_t *);
 337 keywordlist *get_keywords(paragraph *);
 338 void free_keywords(keywordlist *);
 339 void subst_keywords(paragraph *, keywordlist *);
 340
 341 /*
 342  * index.c
 343  */
 344
 345 /*
 346  * Data structure to hold both sides of the index.
 347  */
 348 struct indexdata_Tag {
 349     tree234 *tags;                     /* holds type `indextag' */
 350     tree234 *entries;                  /* holds type `indexentry' */
 351 };
 352
 353 /*
 354  * Data structure to hold an index tag (LHS of index).
 355  */
 356 struct indextag_Tag {
 357     wchar_t *name;
 358     word *implicit_text;
 359     word **explicit_texts;
 360     int nexplicit, explicit_size;
 361     int nrefs;
 362     indexentry **refs;                 /* array of entries referenced by tag */
 363 };
 364
 365 /*
 366  * Data structure to hold an index entry (RHS of index).
 367  */
 368 struct indexentry_Tag {
 369     word *text;
 370     void *backend_data;                /* private to back end */
 371 };
 372
 373 indexdata *make_index(void);
 374 void cleanup_index(indexdata *);
 375 /* index_merge takes responsibility for freeing arg 3 iff implicit; never
 376  * takes responsibility for arg 2 */
 377 void index_merge(indexdata *, int is_explicit, wchar_t *, word *);
 378 void build_index(indexdata *);
 379 void index_debug(indexdata *);
 380 indextag *index_findtag(indexdata *idx, wchar_t *name);
 381
 382 /*
 383  * contents.c
 384  */
 385 numberstate *number_init(void);
 386 void number_cfg(numberstate *, paragraph *);
 387 word *number_mktext(numberstate *, paragraph *, wchar_t *, int , int *);
 388 void number_free(numberstate *);
 389
 390 /*
 391  * biblio.c
 392  */
 393 void gen_citations(paragraph *, keywordlist *);
 394
 395 /*
 396  * style.c
 397  */
 398 struct userstyle_Tag {
 399 };
 400
 401 /*
 402  * bk_text.c
 403  */
 404 void text_backend(paragraph *, keywordlist *, indexdata *);
 405
 406 /*
 407  * bk_xhtml.c
 408  */
 409 void xhtml_backend(paragraph *, keywordlist *, indexdata *);
 410
 411 /*
 412  * bk_whlp.c
 413  */
 414 void whlp_backend(paragraph *, keywordlist *, indexdata *);
 415
 416 #endif