/* $Id$ */ /* * Copyright (c) 2008, 2009 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include "libmdoc.h" #define REWIND_REWIND (1 << 0) #define REWIND_NOHALT (1 << 1) #define REWIND_HALT (1 << 2) static int ctx_synopsis(MACRO_PROT_ARGS); static int obsolete(MACRO_PROT_ARGS); static int blk_part_exp(MACRO_PROT_ARGS); static int in_line_eoln(MACRO_PROT_ARGS); static int in_line_argn(MACRO_PROT_ARGS); static int in_line(MACRO_PROT_ARGS); static int blk_full(MACRO_PROT_ARGS); static int blk_exp_close(MACRO_PROT_ARGS); static int blk_part_imp(MACRO_PROT_ARGS); static int phrase(struct mdoc *, int, int, char *); static int rew_dohalt(enum mdoct, enum mdoc_type, const struct mdoc_node *); static enum mdoct rew_alt(enum mdoct); static int rew_dobreak(enum mdoct, const struct mdoc_node *); static int rew_elem(struct mdoc *, enum mdoct); static int rew_sub(enum mdoc_type, struct mdoc *, enum mdoct, int, int); static int rew_last(struct mdoc *, const struct mdoc_node *); static int append_delims(struct mdoc *, int, int *, char *); static int lookup(int, const char *); static int lookup_raw(const char *); static int swarn(struct mdoc *, enum mdoc_type, int, int, const struct mdoc_node *); /* Central table of library: who gets parsed how. */ const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ap */ { in_line_eoln, MDOC_PROLOGUE }, /* Dd */ { in_line_eoln, MDOC_PROLOGUE }, /* Dt */ { in_line_eoln, MDOC_PROLOGUE }, /* Os */ { blk_full, 0 }, /* Sh */ { blk_full, 0 }, /* Ss */ { in_line_eoln, 0 }, /* Pp */ { blk_part_imp, MDOC_PARSED }, /* D1 */ { blk_part_imp, MDOC_PARSED }, /* Dl */ { blk_full, MDOC_EXPLICIT }, /* Bd */ { blk_exp_close, MDOC_EXPLICIT }, /* Ed */ { blk_full, MDOC_EXPLICIT }, /* Bl */ { blk_exp_close, MDOC_EXPLICIT }, /* El */ { blk_full, MDOC_PARSED }, /* It */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* An */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cd */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Cm */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Dv */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Er */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ev */ { in_line_eoln, 0 }, /* Ex */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fa */ { in_line_eoln, 0 }, /* Fd */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fl */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fn */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ft */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ic */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Li */ { blk_full, 0 }, /* Nd */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */ { obsolete, 0 }, /* Ot */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */ { in_line_eoln, 0 }, /* Rv */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Va */ { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Vt */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Xr */ { in_line_eoln, 0 }, /* %A */ { in_line_eoln, 0 }, /* %B */ { in_line_eoln, 0 }, /* %D */ { in_line_eoln, 0 }, /* %I */ { in_line_eoln, 0 }, /* %J */ { in_line_eoln, 0 }, /* %N */ { in_line_eoln, 0 }, /* %O */ { in_line_eoln, 0 }, /* %P */ { in_line_eoln, 0 }, /* %R */ { in_line_eoln, 0 }, /* %T */ { in_line_eoln, 0 }, /* %V */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ac */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ao */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Aq */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Bc */ { blk_full, MDOC_EXPLICIT }, /* Bf */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bo */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Bq */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bsx */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Bx */ { in_line_eoln, 0 }, /* Db */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Dc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Do */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Dq */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Ec */ { blk_exp_close, MDOC_EXPLICIT }, /* Ef */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Em */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Eo */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Fx */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ms */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* No */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ns */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Pc */ { in_line_argn, MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Po */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Pq */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Qc */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Ql */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Qo */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Qq */ { blk_exp_close, MDOC_EXPLICIT }, /* Re */ { blk_full, MDOC_EXPLICIT }, /* Rs */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Sc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* So */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Sq */ { in_line_eoln, 0 }, /* Sm */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sx */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Sy */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ux */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Xc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Xo */ { blk_full, MDOC_EXPLICIT | MDOC_CALLABLE }, /* Fo */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Fc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Oo */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Oc */ { blk_full, MDOC_EXPLICIT }, /* Bk */ { blk_exp_close, MDOC_EXPLICIT }, /* Ek */ { in_line_eoln, 0 }, /* Bt */ { in_line_eoln, 0 }, /* Hf */ { obsolete, 0 }, /* Fr */ { in_line_eoln, 0 }, /* Ud */ { in_line_eoln, 0 }, /* Lb */ { in_line_eoln, 0 }, /* Lp */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Lk */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Mt */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Brq */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Bro */ { blk_exp_close, MDOC_EXPLICIT | MDOC_CALLABLE | MDOC_PARSED }, /* Brc */ { in_line_eoln, 0 }, /* %C */ { obsolete, 0 }, /* Es */ { obsolete, 0 }, /* En */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */ { in_line_eoln, 0 }, /* %Q */ { in_line_eoln, 0 }, /* br */ { in_line_eoln, 0 }, /* sp */ { in_line_eoln, 0 }, /* %U */ }; const struct mdoc_macro * const mdoc_macros = __mdoc_macros; static int swarn(struct mdoc *mdoc, enum mdoc_type type, int line, int pos, const struct mdoc_node *p) { const char *n, *t, *tt; n = t = ""; tt = "block"; switch (type) { case (MDOC_BODY): tt = "multi-line"; break; case (MDOC_HEAD): tt = "line"; break; default: break; } switch (p->type) { case (MDOC_BLOCK): n = mdoc_macronames[p->tok]; t = "block"; break; case (MDOC_BODY): n = mdoc_macronames[p->tok]; t = "multi-line"; break; case (MDOC_HEAD): n = mdoc_macronames[p->tok]; t = "line"; break; default: break; } if ( ! (MDOC_IGN_SCOPE & mdoc->pflags)) return(mdoc_verr(mdoc, line, pos, "%s scope breaks %s scope of %s", tt, t, n)); return(mdoc_vwarn(mdoc, line, pos, "%s scope breaks %s scope of %s", tt, t, n)); } /* * This is called at the end of parsing. It must traverse up the tree, * closing out open [implicit] scopes. Obviously, open explicit scopes * are errors. */ int mdoc_macroend(struct mdoc *m) { struct mdoc_node *n; /* Scan for open explicit scopes. */ n = MDOC_VALID & m->last->flags ? m->last->parent : m->last; for ( ; n; n = n->parent) { if (MDOC_BLOCK != n->type) continue; if ( ! (MDOC_EXPLICIT & mdoc_macros[n->tok].flags)) continue; return(mdoc_nerr(m, n, EOPEN)); } /* Rewind to the first. */ return(rew_last(m, m->first)); } /* * Look up a macro from within a subsequent context. */ static int lookup(int from, const char *p) { /* FIXME: make -diag lists be un-PARSED. */ if ( ! (MDOC_PARSED & mdoc_macros[from].flags)) return(MDOC_MAX); return(lookup_raw(p)); } /* * Lookup a macro following the initial line macro. */ static int lookup_raw(const char *p) { int res; if (MDOC_MAX == (res = mdoc_hash_find(p))) return(MDOC_MAX); if (MDOC_CALLABLE & mdoc_macros[res].flags) return(res); return(MDOC_MAX); } static int rew_last(struct mdoc *mdoc, const struct mdoc_node *to) { assert(to); mdoc->next = MDOC_NEXT_SIBLING; /* LINTED */ while (mdoc->last != to) { if ( ! mdoc_valid_post(mdoc)) return(0); if ( ! mdoc_action_post(mdoc)) return(0); mdoc->last = mdoc->last->parent; assert(mdoc->last); } if ( ! mdoc_valid_post(mdoc)) return(0); return(mdoc_action_post(mdoc)); } /* * Return the opening macro of a closing one, e.g., `Ec' has `Eo' as its * matching pair. */ static enum mdoct rew_alt(enum mdoct tok) { switch (tok) { case (MDOC_Ac): return(MDOC_Ao); case (MDOC_Bc): return(MDOC_Bo); case (MDOC_Brc): return(MDOC_Bro); case (MDOC_Dc): return(MDOC_Do); case (MDOC_Ec): return(MDOC_Eo); case (MDOC_Ed): return(MDOC_Bd); case (MDOC_Ef): return(MDOC_Bf); case (MDOC_Ek): return(MDOC_Bk); case (MDOC_El): return(MDOC_Bl); case (MDOC_Fc): return(MDOC_Fo); case (MDOC_Oc): return(MDOC_Oo); case (MDOC_Pc): return(MDOC_Po); case (MDOC_Qc): return(MDOC_Qo); case (MDOC_Re): return(MDOC_Rs); case (MDOC_Sc): return(MDOC_So); case (MDOC_Xc): return(MDOC_Xo); default: break; } abort(); /* NOTREACHED */ } /* * Rewind rules. This indicates whether to stop rewinding * (REWIND_HALT) without touching our current scope, stop rewinding and * close our current scope (REWIND_REWIND), or continue (REWIND_NOHALT). * The scope-closing and so on occurs in the various rew_* routines. */ static int rew_dohalt(enum mdoct tok, enum mdoc_type type, const struct mdoc_node *p) { if (MDOC_ROOT == p->type) return(REWIND_HALT); if (MDOC_VALID & p->flags) return(REWIND_NOHALT); switch (tok) { case (MDOC_Aq): /* FALLTHROUGH */ case (MDOC_Bq): /* FALLTHROUGH */ case (MDOC_Brq): /* FALLTHROUGH */ case (MDOC_D1): /* FALLTHROUGH */ case (MDOC_Dl): /* FALLTHROUGH */ case (MDOC_Dq): /* FALLTHROUGH */ case (MDOC_Op): /* FALLTHROUGH */ case (MDOC_Pq): /* FALLTHROUGH */ case (MDOC_Ql): /* FALLTHROUGH */ case (MDOC_Qq): /* FALLTHROUGH */ case (MDOC_Sq): /* FALLTHROUGH */ case (MDOC_Vt): assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); break; case (MDOC_It): assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); if (MDOC_BODY == p->type && MDOC_Bl == p->tok) return(REWIND_HALT); break; case (MDOC_Sh): if (type == p->type && tok == p->tok) return(REWIND_REWIND); break; case (MDOC_Nd): /* FALLTHROUGH */ case (MDOC_Ss): assert(MDOC_TAIL != type); if (type == p->type && tok == p->tok) return(REWIND_REWIND); if (MDOC_BODY == p->type && MDOC_Sh == p->tok) return(REWIND_HALT); break; case (MDOC_Ao): /* FALLTHROUGH */ case (MDOC_Bd): /* FALLTHROUGH */ case (MDOC_Bf): /* FALLTHROUGH */ case (MDOC_Bk): /* FALLTHROUGH */ case (MDOC_Bl): /* FALLTHROUGH */ case (MDOC_Bo): /* FALLTHROUGH */ case (MDOC_Bro): /* FALLTHROUGH */ case (MDOC_Do): /* FALLTHROUGH */ case (MDOC_Eo): /* FALLTHROUGH */ case (MDOC_Fo): /* FALLTHROUGH */ case (MDOC_Oo): /* FALLTHROUGH */ case (MDOC_Po): /* FALLTHROUGH */ case (MDOC_Qo): /* FALLTHROUGH */ case (MDOC_Rs): /* FALLTHROUGH */ case (MDOC_So): /* FALLTHROUGH */ case (MDOC_Xo): if (type == p->type && tok == p->tok) return(REWIND_REWIND); break; /* Multi-line explicit scope close. */ case (MDOC_Ac): /* FALLTHROUGH */ case (MDOC_Bc): /* FALLTHROUGH */ case (MDOC_Brc): /* FALLTHROUGH */ case (MDOC_Dc): /* FALLTHROUGH */ case (MDOC_Ec): /* FALLTHROUGH */ case (MDOC_Ed): /* FALLTHROUGH */ case (MDOC_Ek): /* FALLTHROUGH */ case (MDOC_El): /* FALLTHROUGH */ case (MDOC_Fc): /* FALLTHROUGH */ case (MDOC_Ef): /* FALLTHROUGH */ case (MDOC_Oc): /* FALLTHROUGH */ case (MDOC_Pc): /* FALLTHROUGH */ case (MDOC_Qc): /* FALLTHROUGH */ case (MDOC_Re): /* FALLTHROUGH */ case (MDOC_Sc): /* FALLTHROUGH */ case (MDOC_Xc): if (type == p->type && rew_alt(tok) == p->tok) return(REWIND_REWIND); break; default: abort(); /* NOTREACHED */ } return(REWIND_NOHALT); } /* * See if we can break an encountered scope (the rew_dohalt has returned * REWIND_NOHALT). */ static int rew_dobreak(enum mdoct tok, const struct mdoc_node *p) { assert(MDOC_ROOT != p->type); if (MDOC_ELEM == p->type) return(1); if (MDOC_TEXT == p->type) return(1); if (MDOC_VALID & p->flags) return(1); switch (tok) { case (MDOC_It): return(MDOC_It == p->tok); case (MDOC_Nd): return(MDOC_Nd == p->tok); case (MDOC_Ss): return(MDOC_Ss == p->tok); case (MDOC_Sh): if (MDOC_Nd == p->tok) return(1); if (MDOC_Ss == p->tok) return(1); return(MDOC_Sh == p->tok); case (MDOC_El): if (MDOC_It == p->tok) return(1); break; case (MDOC_Oc): if (MDOC_Op == p->tok) return(1); break; default: break; } if (MDOC_EXPLICIT & mdoc_macros[tok].flags) return(p->tok == rew_alt(tok)); else if (MDOC_BLOCK == p->type) return(1); return(tok == p->tok); } static int rew_elem(struct mdoc *mdoc, enum mdoct tok) { struct mdoc_node *n; n = mdoc->last; if (MDOC_ELEM != n->type) n = n->parent; assert(MDOC_ELEM == n->type); assert(tok == n->tok); return(rew_last(mdoc, n)); } static int rew_sub(enum mdoc_type t, struct mdoc *m, enum mdoct tok, int line, int ppos) { struct mdoc_node *n; int c; /* LINTED */ for (n = m->last; n; n = n->parent) { c = rew_dohalt(tok, t, n); if (REWIND_HALT == c) { if (MDOC_BLOCK != t) return(1); if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) return(1); return(mdoc_perr(m, line, ppos, ENOCTX)); } if (REWIND_REWIND == c) break; else if (rew_dobreak(tok, n)) continue; if ( ! swarn(m, t, line, ppos, n)) return(0); } assert(n); if ( ! rew_last(m, n)) return(0); #ifdef UGLY /* * The current block extends an enclosing block beyond a line * break. Now that the current block ends, close the enclosing * block, too. */ if (NULL != (n = n->pending)) { assert(MDOC_HEAD == n->type); if ( ! rew_last(m, n)) return(0); if ( ! mdoc_body_alloc(m, n->line, n->pos, n->tok)) return(0); } #endif return(1); } static int append_delims(struct mdoc *mdoc, int line, int *pos, char *buf) { int c, lastarg; char *p; if (0 == buf[*pos]) return(1); for (;;) { lastarg = *pos; c = mdoc_zargs(mdoc, line, pos, buf, ARGS_NOWARN, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); else if (ARGS_EOLN == c) break; assert(mdoc_isdelim(p)); if ( ! mdoc_word_alloc(mdoc, line, lastarg, p)) return(0); } return(1); } /* * Close out block partial/full explicit. */ static int blk_exp_close(MACRO_PROT_ARGS) { int j, c, lastarg, maxargs, flushed; char *p; switch (tok) { case (MDOC_Ec): maxargs = 1; break; default: maxargs = 0; break; } if ( ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) { if (buf[*pos]) if ( ! mdoc_pwarn(m, line, ppos, ENOLINE)) return(0); if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) return(0); return(rew_sub(MDOC_BLOCK, m, tok, line, ppos)); } if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) return(0); if (maxargs > 0) if ( ! mdoc_tail_alloc(m, line, ppos, rew_alt(tok))) return(0); for (flushed = j = 0; ; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) return(0); flushed = 1; } c = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; if (MDOC_MAX != (c = lookup(tok, p))) { if ( ! flushed) { if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) return(0); flushed = 1; } if ( ! mdoc_macro(m, c, line, lastarg, pos, buf)) return(0); break; } if ( ! mdoc_word_alloc(m, line, lastarg, p)) return(0); } if ( ! flushed && ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) return(0); if (ppos > 1) return(1); return(append_delims(m, line, pos, buf)); } static int in_line(MACRO_PROT_ARGS) { int la, lastpunct, c, w, cnt, d, nc; struct mdoc_arg *arg; char *p; /* * Whether we allow ignored elements (those without content, * usually because of reserved words) to squeak by. */ switch (tok) { case (MDOC_An): /* FALLTHROUGH */ case (MDOC_Ar): /* FALLTHROUGH */ case (MDOC_Fl): /* FALLTHROUGH */ case (MDOC_Lk): /* FALLTHROUGH */ case (MDOC_Nm): /* FALLTHROUGH */ case (MDOC_Pa): nc = 1; break; default: nc = 0; break; } for (arg = NULL;; ) { la = *pos; c = mdoc_argv(m, line, tok, &arg, pos, buf); if (ARGV_WORD == c) { *pos = la; break; } if (ARGV_EOLN == c) break; if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } for (cnt = 0, lastpunct = 1;; ) { la = *pos; w = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == w) return(0); if (ARGS_EOLN == w) break; if (ARGS_PUNCT == w) break; /* Quoted words shouldn't be looked-up. */ c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p); /* * In this case, we've located a submacro and must * execute it. Close out scope, if open. If no * elements have been generated, either create one (nc) * or raise a warning. */ if (MDOC_MAX != c) { if (0 == lastpunct && ! rew_elem(m, tok)) return(0); if (nc && 0 == cnt) { if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) return(0); if ( ! rew_last(m, m->last)) return(0); } else if ( ! nc && 0 == cnt) { mdoc_argv_free(arg); if ( ! mdoc_pwarn(m, line, ppos, EIGNE)) return(0); } c = mdoc_macro(m, c, line, la, pos, buf); if (0 == c) return(0); if (ppos > 1) return(1); return(append_delims(m, line, pos, buf)); } /* * Non-quote-enclosed punctuation. Set up our scope, if * a word; rewind the scope, if a delimiter; then append * the word. */ d = mdoc_isdelim(p); if (ARGS_QWORD != w && d) { if (0 == lastpunct && ! rew_elem(m, tok)) return(0); lastpunct = 1; } else if (lastpunct) { if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) return(0); lastpunct = 0; } if ( ! d) cnt++; if ( ! mdoc_word_alloc(m, line, la, p)) return(0); /* * `Fl' macros have their scope re-opened with each new * word so that the `-' can be added to each one without * having to parse out spaces. */ if (0 == lastpunct && MDOC_Fl == tok) { if ( ! rew_elem(m, tok)) return(0); lastpunct = 1; } } if (0 == lastpunct && ! rew_elem(m, tok)) return(0); /* * If no elements have been collected and we're allowed to have * empties (nc), open a scope and close it out. Otherwise, * raise a warning. */ if (nc && 0 == cnt) { if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) return(0); if ( ! rew_last(m, m->last)) return(0); } else if ( ! nc && 0 == cnt) { mdoc_argv_free(arg); if ( ! mdoc_pwarn(m, line, ppos, EIGNE)) return(0); } if (ppos > 1) return(1); return(append_delims(m, line, pos, buf)); } static int blk_full(MACRO_PROT_ARGS) { int c, la; struct mdoc_arg *arg; struct mdoc_node *head; /* save of head macro */ #ifdef UGLY struct mdoc_node *n; #endif char *p; /* Close out prior implicit scope. */ if ( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)) { if ( ! rew_sub(MDOC_BODY, m, tok, line, ppos)) return(0); if ( ! rew_sub(MDOC_BLOCK, m, tok, line, ppos)) return(0); } /* * This routine accomodates implicitly- and explicitly-scoped * macro openings. Implicit ones first close out prior scope * (seen above). Delay opening the head until necessary to * allow leading punctuation to print. Special consideration * for `It -column', which has phrase-part syntax instead of * regular child nodes. */ for (arg = NULL;; ) { la = *pos; c = mdoc_argv(m, line, tok, &arg, pos, buf); if (ARGV_WORD == c) { *pos = la; break; } if (ARGV_EOLN == c) break; if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } if ( ! mdoc_block_alloc(m, line, ppos, tok, arg)) return(0); head = NULL; /* * The `Nd' macro has all arguments in its body: it's a hybrid * of block partial-explicit and full-implicit. Stupid. */ if (MDOC_Nd == tok) { if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); head = m->last; if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); } for (;;) { la = *pos; c = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == c) return(0); if (ARGS_EOLN == c) break; /* Don't emit leading punct. for phrases. */ if (NULL == head && ARGS_PHRASE != c && 1 == mdoc_isdelim(p)) { if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; } /* Always re-open head for phrases. */ if (NULL == head || ARGS_PHRASE == c) { if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); head = m->last; } if (ARGS_PHRASE == c) { if ( ! phrase(m, line, la, buf)) return(0); if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) return(0); continue; } c = lookup(tok, p); if (MDOC_MAX != c) { if ( ! mdoc_macro(m, c, line, la, pos, buf)) return(0); break; } if ( ! mdoc_word_alloc(m, line, la, p)) return(0); } if (NULL == head) { if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); head = m->last; } if (1 == ppos && ! append_delims(m, line, pos, buf)) return(0); /* See notes on `Nd' hybrid, above. */ if (MDOC_Nd == tok) return(1); #ifdef UGLY /* * If there is an open sub-block requiring explicit close-out, * postpone switching the current block from head to body until * the rew_sub() call closing out that sub-block. */ for (n = m->last; n && n != head; n = n->parent) { if (MDOC_EXPLICIT & mdoc_macros[n->tok].flags && MDOC_BLOCK == n->type) { n->pending = head; return(1); } } #endif /* Close out scopes to remain in a consistent state. */ if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); return(1); } static int blk_part_imp(MACRO_PROT_ARGS) { int la, c; char *p; struct mdoc_node *blk; /* saved block context */ struct mdoc_node *body; /* saved body context */ struct mdoc_node *n; /* * A macro that spans to the end of the line. This is generally * (but not necessarily) called as the first macro. The block * has a head as the immediate child, which is always empty, * followed by zero or more opening punctuation nodes, then the * body (which may be empty, depending on the macro), then zero * or more closing punctuation nodes. */ if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL)) return(0); blk = m->last; if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) return(0); /* * Open the body scope "on-demand", that is, after we've * processed all our the leading delimiters (open parenthesis, * etc.). */ for (body = NULL; ; ) { la = *pos; c = mdoc_args(m, line, pos, buf, tok, &p); assert(ARGS_PHRASE != c); if (ARGS_ERROR == c) return(0); if (ARGS_EOLN == c) break; if (ARGS_PUNCT == c) break; if (NULL == body && 1 == mdoc_isdelim(p)) { if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; } if (NULL == body) { if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); body = m->last; } if (MDOC_MAX != (c = lookup(tok, p))) { if ( ! mdoc_macro(m, c, line, la, pos, buf)) return(0); break; } if ( ! mdoc_word_alloc(m, line, la, p)) return(0); } /* Clean-ups to leave in a consistent state. */ if (NULL == body) { if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); body = m->last; } /* * If we can't rewind to our body, then our scope has already * been closed by another macro (like `Oc' closing `Op'). This * is ugly behaviour nodding its head to OpenBSD's overwhelming * crufty use of `Op' breakage. */ for (n = m->last; n; n = n->parent) if (body == n) break; if (NULL == n && ! mdoc_nwarn(m, body, EIMPBRK)) return(0); if (n && ! rew_last(m, body)) return(0); /* Standard appending of delimiters. */ if (1 == ppos && ! append_delims(m, line, pos, buf)) return(0); /* Rewind scope, if applicable. */ if (n && ! rew_last(m, blk)) return(0); return(1); } static int blk_part_exp(MACRO_PROT_ARGS) { int la, c; struct mdoc_node *head; /* keep track of head */ struct mdoc_node *body; /* keep track of body */ char *p; /* * The opening of an explicit macro having zero or more leading * punctuation nodes; a head with optional single element (the * case of `Eo'); and a body that may be empty. */ if ( ! mdoc_block_alloc(m, line, ppos, tok, NULL)) return(0); for (head = body = NULL; ; ) { la = *pos; c = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; assert(ARGS_PHRASE != c); /* Flush out leading punctuation. */ if (NULL == head && 1 == mdoc_isdelim(p)) { assert(NULL == body); if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; } if (NULL == head) { assert(NULL == body); if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); head = m->last; } /* * `Eo' gobbles any data into the head, but most other * macros just immediately close out and begin the body. */ if (NULL == body) { assert(head); /* No check whether it's a macro! */ if (MDOC_Eo == tok) if ( ! mdoc_word_alloc(m, line, la, p)) return(0); if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); body = m->last; if (MDOC_Eo == tok) continue; } assert(NULL != head && NULL != body); if (MDOC_MAX != (c = lookup(tok, p))) { if ( ! mdoc_macro(m, c, line, la, pos, buf)) return(0); break; } if ( ! mdoc_word_alloc(m, line, la, p)) return(0); } /* Clean-up to leave in a consistent state. */ if (NULL == head) { if ( ! mdoc_head_alloc(m, line, ppos, tok)) return(0); head = m->last; } if (NULL == body) { if ( ! rew_sub(MDOC_HEAD, m, tok, line, ppos)) return(0); if ( ! mdoc_body_alloc(m, line, ppos, tok)) return(0); body = m->last; } /* Standard appending of delimiters. */ if (ppos > 1) return(1); return(append_delims(m, line, pos, buf)); } static int in_line_argn(MACRO_PROT_ARGS) { int la, flushed, j, c, maxargs; struct mdoc_arg *arg; char *p; /* * A line macro that has a fixed number of arguments (maxargs). * Only open the scope once the first non-leading-punctuation is * found (unless MDOC_IGNDELIM is noted, like in `Pf'), then * keep it open until the maximum number of arguments are * exhausted. */ switch (tok) { case (MDOC_Ap): /* FALLTHROUGH */ case (MDOC_No): /* FALLTHROUGH */ case (MDOC_Ns): /* FALLTHROUGH */ case (MDOC_Ux): maxargs = 0; break; case (MDOC_Xr): maxargs = 2; break; default: maxargs = 1; break; } for (arg = NULL; ; ) { la = *pos; c = mdoc_argv(m, line, tok, &arg, pos, buf); if (ARGV_WORD == c) { *pos = la; break; } if (ARGV_EOLN == c) break; if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } for (flushed = j = 0; ; ) { la = *pos; c = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == c) return(0); if (ARGS_PUNCT == c) break; if (ARGS_EOLN == c) break; if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && 0 == j && 1 == mdoc_isdelim(p)) { if ( ! mdoc_word_alloc(m, line, la, p)) return(0); continue; } else if (0 == j) if ( ! mdoc_elem_alloc(m, line, la, tok, arg)) return(0); if (j == maxargs && ! flushed) { if ( ! rew_elem(m, tok)) return(0); flushed = 1; } if (MDOC_MAX != (c = lookup(tok, p))) { if ( ! flushed && ! rew_elem(m, tok)) return(0); flushed = 1; if ( ! mdoc_macro(m, c, line, la, pos, buf)) return(0); j++; break; } if ( ! (MDOC_IGNDELIM & mdoc_macros[tok].flags) && ! flushed && mdoc_isdelim(p)) { if ( ! rew_elem(m, tok)) return(0); flushed = 1; } /* * XXX: this is a hack to work around groff's ugliness * as regards `Xr' and extraneous arguments. It should * ideally be deprecated behaviour, but because this is * code is no here, it's unlikely to be removed. */ #ifdef __OpenBSD__ if (MDOC_Xr == tok && j == maxargs) { if ( ! mdoc_elem_alloc(m, line, la, MDOC_Ns, NULL)) return(0); if ( ! rew_elem(m, MDOC_Ns)) return(0); } #endif if ( ! mdoc_word_alloc(m, line, la, p)) return(0); j++; } if (0 == j && ! mdoc_elem_alloc(m, line, la, tok, arg)) return(0); /* Close out in a consistent state. */ if ( ! flushed && ! rew_elem(m, tok)) return(0); if (ppos > 1) return(1); return(append_delims(m, line, pos, buf)); } static int in_line_eoln(MACRO_PROT_ARGS) { int c, w, la; struct mdoc_arg *arg; char *p; assert( ! (MDOC_PARSED & mdoc_macros[tok].flags)); /* Parse macro arguments. */ for (arg = NULL; ; ) { la = *pos; c = mdoc_argv(m, line, tok, &arg, pos, buf); if (ARGV_WORD == c) { *pos = la; break; } if (ARGV_EOLN == c) break; if (ARGV_ARG == c) continue; mdoc_argv_free(arg); return(0); } /* Open element scope. */ if ( ! mdoc_elem_alloc(m, line, ppos, tok, arg)) return(0); /* Parse argument terms. */ for (;;) { la = *pos; w = mdoc_args(m, line, pos, buf, tok, &p); if (ARGS_ERROR == w) return(0); if (ARGS_EOLN == w) break; c = ARGS_QWORD == w ? MDOC_MAX : lookup(tok, p); if (MDOC_MAX != c) { if ( ! rew_elem(m, tok)) return(0); return(mdoc_macro(m, c, line, la, pos, buf)); } if ( ! mdoc_word_alloc(m, line, la, p)) return(0); } /* Close out (no delimiters). */ return(rew_elem(m, tok)); } /* ARGSUSED */ static int ctx_synopsis(MACRO_PROT_ARGS) { /* If we're not in the SYNOPSIS, go straight to in-line. */ if (SEC_SYNOPSIS != m->lastsec) return(in_line(m, tok, line, ppos, pos, buf)); /* If we're a nested call, same place. */ if (ppos > 1) return(in_line(m, tok, line, ppos, pos, buf)); /* * XXX: this will open a block scope; however, if later we end * up formatting the block scope, then child nodes will inherit * the formatting. Be careful. */ return(blk_part_imp(m, tok, line, ppos, pos, buf)); } /* ARGSUSED */ static int obsolete(MACRO_PROT_ARGS) { return(mdoc_pwarn(m, line, ppos, EOBS)); } /* * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs. * They're unusual because they're basically free-form text until a * macro is encountered. */ static int phrase(struct mdoc *m, int line, int ppos, char *buf) { int c, w, la, pos; char *p; for (pos = ppos; ; ) { la = pos; /* Note: no calling context! */ w = mdoc_zargs(m, line, &pos, buf, 0, &p); if (ARGS_ERROR == w) return(0); if (ARGS_EOLN == w) break; c = ARGS_QWORD == w ? MDOC_MAX : lookup_raw(p); if (MDOC_MAX != c) { if ( ! mdoc_macro(m, c, line, la, &pos, buf)) return(0); return(append_delims(m, line, &pos, buf)); } if ( ! mdoc_word_alloc(m, line, la, p)) return(0); } return(1); }