/* $Id$ */ /* * Copyright (c) 2008-2012 Kristaps Dzonsons * Copyright (c) 2010, 2012-2015 Ingo Schwarze * * 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. */ #include "config.h" #include #include #include #include #include #include #include #include "mdoc.h" #include "mandoc.h" #include "libmdoc.h" #include "libmandoc.h" enum rew { /* see rew_dohalt() */ REWIND_NONE, REWIND_THIS, REWIND_MORE, REWIND_FORCE, REWIND_LATER, REWIND_ERROR }; static void blk_full(MACRO_PROT_ARGS); static void blk_exp_close(MACRO_PROT_ARGS); static void blk_part_exp(MACRO_PROT_ARGS); static void blk_part_imp(MACRO_PROT_ARGS); static void ctx_synopsis(MACRO_PROT_ARGS); static void in_line_eoln(MACRO_PROT_ARGS); static void in_line_argn(MACRO_PROT_ARGS); static void in_line(MACRO_PROT_ARGS); static void phrase_ta(MACRO_PROT_ARGS); static void dword(struct mdoc *, int, int, const char *, enum mdelim, int); static void append_delims(struct mdoc *, int, int *, char *); static enum mdoct lookup(struct mdoc *, enum mdoct, int, int, const char *); static int macro_or_word(MACRO_PROT_ARGS, int); static int make_pending(struct mdoc_node *, enum mdoct, struct mdoc *, int, int); static int parse_rest(struct mdoc *, enum mdoct, int, int *, char *); static enum mdoct rew_alt(enum mdoct); static enum rew rew_dohalt(enum mdoct, enum mdoc_type, const struct mdoc_node *); static void rew_elem(struct mdoc *, enum mdoct); static void rew_last(struct mdoc *, const struct mdoc_node *); static void rew_sub(enum mdoc_type, struct mdoc *, enum mdoct, int, int); const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ap */ { in_line_eoln, MDOC_PROLOGUE }, /* Dd */ { in_line_eoln, MDOC_PROLOGUE }, /* Dt */ { in_line_eoln, MDOC_PROLOGUE }, /* Os */ { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Sh */ { blk_full, MDOC_PARSED | MDOC_JOIN }, /* Ss */ { in_line_eoln, 0 }, /* Pp */ { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* D1 */ { blk_part_imp, MDOC_PARSED | MDOC_JOIN }, /* Dl */ { blk_full, MDOC_EXPLICIT }, /* Bd */ { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ed */ { blk_full, MDOC_EXPLICIT }, /* Bl */ { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* El */ { blk_full, MDOC_PARSED | MDOC_JOIN }, /* It */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ad */ { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* An */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ar */ { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* 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 | MDOC_JOIN }, /* Ic */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* In */ { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Li */ { blk_full, MDOC_JOIN }, /* Nd */ { ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* 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, MDOC_JOIN }, /* %A */ { in_line_eoln, MDOC_JOIN }, /* %B */ { in_line_eoln, MDOC_JOIN }, /* %D */ { in_line_eoln, MDOC_JOIN }, /* %I */ { in_line_eoln, MDOC_JOIN }, /* %J */ { in_line_eoln, 0 }, /* %N */ { in_line_eoln, MDOC_JOIN }, /* %O */ { in_line_eoln, 0 }, /* %P */ { in_line_eoln, MDOC_JOIN }, /* %R */ { in_line_eoln, MDOC_JOIN }, /* %T */ { in_line_eoln, 0 }, /* %V */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Ac */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Ao */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Aq */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* At */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Bc */ { blk_full, MDOC_EXPLICIT }, /* Bf */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Bo */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* 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_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Dc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Do */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Dq */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT }, /* Ec */ { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ef */ { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* 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, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* No */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM | MDOC_JOIN }, /* Ns */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Nx */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Ox */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Pc */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM }, /* Pf */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Po */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Pq */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Qc */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ql */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Qo */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Qq */ { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Re */ { blk_full, MDOC_EXPLICIT }, /* Rs */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Sc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* So */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sq */ { in_line_argn, 0 }, /* Sm */ { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sx */ { in_line, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Sy */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Tn */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* 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_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Fc */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Oo */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Oc */ { blk_full, MDOC_EXPLICIT }, /* Bk */ { blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */ { in_line_eoln, 0 }, /* Bt */ { in_line_eoln, 0 }, /* Hf */ { in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */ { in_line_eoln, 0 }, /* Ud */ { in_line, 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 | MDOC_JOIN }, /* Brq */ { blk_part_exp, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Bro */ { blk_exp_close, MDOC_CALLABLE | MDOC_PARSED | MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */ { in_line_eoln, MDOC_JOIN }, /* %C */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */ { blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */ { in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */ { in_line_eoln, MDOC_JOIN }, /* %Q */ { in_line_eoln, 0 }, /* br */ { in_line_eoln, 0 }, /* sp */ { in_line_eoln, 0 }, /* %U */ { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */ { in_line_eoln, MDOC_PROLOGUE }, /* ll */ }; const struct mdoc_macro * const mdoc_macros = __mdoc_macros; /* * 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. */ void mdoc_macroend(struct mdoc *mdoc) { struct mdoc_node *n; /* Scan for open explicit scopes. */ n = mdoc->last->flags & MDOC_VALID ? mdoc->last->parent : mdoc->last; for ( ; n; n = n->parent) if (n->type == MDOC_BLOCK && mdoc_macros[n->tok].flags & MDOC_EXPLICIT) mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse, n->line, n->pos, mdoc_macronames[n->tok]); /* Rewind to the first. */ rew_last(mdoc, mdoc->first); } /* * Look up the macro at *p called by "from", * or as a line macro if from == MDOC_MAX. */ static enum mdoct lookup(struct mdoc *mdoc, enum mdoct from, int line, int ppos, const char *p) { enum mdoct res; if (from == MDOC_MAX || mdoc_macros[from].flags & MDOC_PARSED) { res = mdoc_hash_find(p); if (res != MDOC_MAX) { if (mdoc_macros[res].flags & MDOC_CALLABLE) return(res); if (res != MDOC_br && res != MDOC_sp && res != MDOC_ll) mandoc_msg(MANDOCERR_MACRO_CALL, mdoc->parse, line, ppos, p); } } return(MDOC_MAX); } static void rew_last(struct mdoc *mdoc, const struct mdoc_node *to) { struct mdoc_node *n, *np; assert(to); mdoc->next = MDOC_NEXT_SIBLING; while (mdoc->last != to) { /* * Save the parent here, because we may delete the * mdoc->last node in the post-validation phase and reset * it to mdoc->last->parent, causing a step in the closing * out to be lost. */ np = mdoc->last->parent; mdoc_valid_post(mdoc); n = mdoc->last; mdoc->last = np; assert(mdoc->last); mdoc->last->last = n; } mdoc_valid_post(mdoc); } /* * For a block closing macro, return the corresponding opening one. * Otherwise, return the macro itself. */ 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: return(tok); } /* NOTREACHED */ } /* * Rewinding to tok, how do we have to handle *p? * REWIND_NONE: *p would delimit tok, but no tok scope is open * inside *p, so there is no need to rewind anything at all. * REWIND_THIS: *p matches tok, so rewind *p and nothing else. * REWIND_MORE: *p is implicit, rewind it and keep searching for tok. * REWIND_FORCE: *p is explicit, but tok is full, force rewinding *p. * REWIND_LATER: *p is explicit and still open, postpone rewinding. * REWIND_ERROR: No tok block is open at all. */ static enum rew rew_dohalt(enum mdoct tok, enum mdoc_type type, const struct mdoc_node *p) { /* * No matching token, no delimiting block, no broken block. * This can happen when full implicit macros are called for * the first time but try to rewind their previous * instance anyway. */ if (MDOC_ROOT == p->type) return(MDOC_BLOCK == type && MDOC_EXPLICIT & mdoc_macros[tok].flags ? REWIND_ERROR : REWIND_NONE); /* * When starting to rewind, skip plain text * and nodes that have already been rewound. */ if (p->type == MDOC_TEXT || p->flags & (MDOC_VALID | MDOC_BREAK)) return(REWIND_MORE); /* * The easiest case: Found a matching token. * This applies to both blocks and elements. */ tok = rew_alt(tok); if (tok == p->tok) return(p->end ? REWIND_NONE : type == p->type ? REWIND_THIS : REWIND_MORE); /* * While elements do require rewinding for themselves, * they never affect rewinding of other nodes. */ if (MDOC_ELEM == p->type) return(REWIND_MORE); /* * Blocks delimited by our target token get REWIND_MORE. * Blocks delimiting our target token get REWIND_NONE. */ switch (tok) { case MDOC_Bl: if (MDOC_It == p->tok) return(REWIND_MORE); break; case MDOC_It: if (MDOC_BODY == p->type && MDOC_Bl == p->tok) return(REWIND_NONE); break; /* * XXX Badly nested block handling still fails badly * when one block is breaking two blocks of the same type. * This is an incomplete and extremely ugly workaround, * required to let the OpenBSD tree build. */ case MDOC_Oo: if (MDOC_Op == p->tok) return(REWIND_MORE); break; case MDOC_Nm: return(REWIND_NONE); case MDOC_Nd: /* FALLTHROUGH */ case MDOC_Ss: if (MDOC_BODY == p->type && MDOC_Sh == p->tok) return(REWIND_NONE); /* FALLTHROUGH */ case MDOC_Sh: if (MDOC_ROOT == p->parent->type) return(REWIND_THIS); if (MDOC_Nd == p->tok || MDOC_Ss == p->tok || MDOC_Sh == p->tok) return(REWIND_MORE); break; default: break; } /* * Default block rewinding rules. * In particular, always skip block end markers, * and let all blocks rewind Nm children. * Do not warn again when closing a block, * since closing the body already warned. */ if (ENDBODY_NOT != p->end || MDOC_Nm == p->tok || MDOC_BLOCK == type || (MDOC_BLOCK == p->type && ! (MDOC_EXPLICIT & mdoc_macros[tok].flags))) return(REWIND_MORE); /* * By default, closing out full blocks * forces closing of broken explicit blocks, * while closing out partial blocks * allows delayed rewinding by default. */ return (&blk_full == mdoc_macros[tok].fp ? REWIND_FORCE : REWIND_LATER); } static void 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); rew_last(mdoc, n); } /* * We are trying to close a block identified by tok, * but the child block *broken is still open. * Thus, postpone closing the tok block * until the rew_sub call closing *broken. */ static int make_pending(struct mdoc_node *broken, enum mdoct tok, struct mdoc *mdoc, int line, int ppos) { struct mdoc_node *breaker; /* * Iterate backwards, searching for the block matching tok, * that is, the block breaking the *broken block. */ for (breaker = broken->parent; breaker; breaker = breaker->parent) { /* * If the *broken block (Z) is already broken and we * encounter its breaker (B), make the tok block (A) * pending on that inner breaker (B). * Graphically, [A breaker=[B! broken=[Z->B B] tok=A] Z] * becomes breaker=[A broken=[B! [Z->B B] tok=A] Z] * and finally [A! [B!->A [Z->B B] A] Z]. * In these graphics, "->" indicates the "pending" * pointer and "!" indicates the MDOC_BREAK flag. * Each of the cases gets one additional pointer (B->A) * and one additional flag (A!). */ if (breaker == broken->pending) { broken = breaker; continue; } if (REWIND_THIS != rew_dohalt(tok, MDOC_BLOCK, breaker)) continue; if (MDOC_BODY == broken->type) broken = broken->parent; /* * Found the breaker. * If another, outer breaker (X) is already pending on * the *broken block (B), we must not clobber the link * to the outer breaker, but make it pending on the * new, now inner breaker (A). * Graphically, [X! breaker=[A broken=[B->X X] tok=A] B] * becomes [X! breaker=[A->X broken=[B X] tok=A] B] * and finally [X! [A!->X [B->A X] A] B]. */ if (broken->pending) { struct mdoc_node *taker; /* * If the inner breaker (A) is already broken, * too, it cannot take on the outer breaker (X) * but must hand it on to its own breakers (Y): * [X! [Y! breaker=[A->Y Y] broken=[B->X X] tok=A] B] * [X! take=[Y!->X brea=[A->Y Y] brok=[B X] tok=A] B] * and finally [X! [Y!->X [A!->Y Y] [B->A X] A] B]. */ taker = breaker; while (taker->pending) taker = taker->pending; taker->pending = broken->pending; } /* * Now we have reduced the situation to the simplest * case, which is just breaker=[A broken=[B tok=A] B] * and becomes [A! [B->A A] B]. */ broken->pending = breaker; breaker->flags |= MDOC_BREAK; mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos, "%s breaks %s", mdoc_macronames[tok], mdoc_macronames[broken->tok]); return(1); } /* * Found no matching block for tok. * Are you trying to close a block that is not open? */ return(0); } static void rew_sub(enum mdoc_type t, struct mdoc *mdoc, enum mdoct tok, int line, int ppos) { struct mdoc_node *n, *to; to = NULL; n = mdoc->last; while (n) { switch (rew_dohalt(tok, t, n)) { case REWIND_NONE: if (to == NULL) return; n = to; break; case REWIND_THIS: n->lastline = line - (mdoc->flags & MDOC_NEWLINE && ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)); break; case REWIND_FORCE: mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse, line, ppos, "%s breaks %s", mdoc_macronames[tok], mdoc_macronames[n->tok]); /* FALLTHROUGH */ case REWIND_MORE: n->lastline = line - (mdoc->flags & MDOC_NEWLINE ? 1 : 0); to = n; n = n->parent; continue; case REWIND_LATER: if (make_pending(n, tok, mdoc, line, ppos) || t != MDOC_BLOCK) return; /* FALLTHROUGH */ case REWIND_ERROR: mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse, line, ppos, mdoc_macronames[tok]); return; } break; } assert(n); rew_last(mdoc, n); /* * The current block extends an enclosing block. * Now that the current block ends, close the enclosing block, too. */ while ((n = n->pending) != NULL) { rew_last(mdoc, n); if (n->type == MDOC_HEAD) mdoc_body_alloc(mdoc, n->line, n->pos, n->tok); } } /* * Allocate a word and check whether it's punctuation or not. * Punctuation consists of those tokens found in mdoc_isdelim(). */ static void dword(struct mdoc *mdoc, int line, int col, const char *p, enum mdelim d, int may_append) { if (d == DELIM_MAX) d = mdoc_isdelim(p); if (may_append && ! (mdoc->flags & (MDOC_SYNOPSIS | MDOC_KEEP | MDOC_SMOFF)) && d == DELIM_NONE && mdoc->last->type == MDOC_TEXT && mdoc_isdelim(mdoc->last->string) == DELIM_NONE) { mdoc_word_append(mdoc, p); return; } mdoc_word_alloc(mdoc, line, col, p); /* * If the word consists of a bare delimiter, * flag the new node accordingly, * unless doing so was vetoed by the invoking macro. * Always clear the veto, it is only valid for one word. */ if (d == DELIM_OPEN) mdoc->last->flags |= MDOC_DELIMO; else if (d == DELIM_CLOSE && ! (mdoc->flags & MDOC_NODELIMC) && mdoc->last->parent->tok != MDOC_Fd) mdoc->last->flags |= MDOC_DELIMC; mdoc->flags &= ~MDOC_NODELIMC; } static void append_delims(struct mdoc *mdoc, int line, int *pos, char *buf) { char *p; int la; if (buf[*pos] == '\0') return; for (;;) { la = *pos; if (mdoc_args(mdoc, line, pos, buf, MDOC_MAX, &p) == ARGS_EOLN) break; dword(mdoc, line, la, p, DELIM_MAX, 1); /* * If we encounter end-of-sentence symbols, then trigger * the double-space. * * XXX: it's easy to allow this to propagate outward to * the last symbol, such that `. )' will cause the * correct double-spacing. However, (1) groff isn't * smart enough to do this and (2) it would require * knowing which symbols break this behaviour, for * example, `. ;' shouldn't propagate the double-space. */ if (mandoc_eos(p, strlen(p))) mdoc->last->flags |= MDOC_EOS; } } /* * Parse one word. * If it is a macro, call it and return 1. * Otherwise, allocate it and return 0. */ static int macro_or_word(MACRO_PROT_ARGS, int parsed) { char *p; enum mdoct ntok; p = buf + ppos; ntok = MDOC_MAX; if (*p == '"') p++; else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT)) ntok = lookup(mdoc, tok, line, ppos, p); if (ntok == MDOC_MAX) { dword(mdoc, line, ppos, p, DELIM_MAX, tok == MDOC_MAX || mdoc_macros[tok].flags & MDOC_JOIN); return(0); } else { if (mdoc_macros[tok].fp == in_line_eoln) rew_elem(mdoc, tok); mdoc_macro(mdoc, ntok, line, ppos, pos, buf); if (tok == MDOC_MAX) append_delims(mdoc, line, pos, buf); return(1); } } /* * Close out block partial/full explicit. */ static void blk_exp_close(MACRO_PROT_ARGS) { struct mdoc_node *body; /* Our own body. */ struct mdoc_node *endbody; /* Our own end marker. */ struct mdoc_node *later; /* A sub-block starting later. */ struct mdoc_node *n; /* For searching backwards. */ int flushed, have_it, j, lastarg, maxargs, nl; enum margserr ac; enum mdoct atok, ntok; char *p; nl = MDOC_NEWLINE & mdoc->flags; switch (tok) { case MDOC_Ec: maxargs = 1; break; case MDOC_Ek: mdoc->flags &= ~MDOC_KEEP; /* FALLTHROUGH */ default: maxargs = 0; break; } /* * Search backwards for beginnings of blocks, * both of our own and of pending sub-blocks. */ have_it = 0; atok = rew_alt(tok); body = endbody = later = NULL; for (n = mdoc->last; n; n = n->parent) { if (n->flags & (MDOC_VALID | MDOC_BREAK)) continue; /* Remember the start of our own body. */ if (n->type == MDOC_BODY && atok == n->tok) { if (n->end == ENDBODY_NOT) body = n; continue; } if (n->type != MDOC_BLOCK || n->tok == MDOC_Nm) continue; if (n->tok == MDOC_It) { have_it = 1; continue; } if (atok == n->tok) { assert(body); /* * Found the start of our own block. * When there is no pending sub block, * just proceed to closing out. */ if (later == NULL || (tok == MDOC_El && !have_it)) break; /* * When there is a pending sub block, * postpone closing out the current block * until the rew_sub() closing out the sub-block. */ make_pending(later, tok, mdoc, line, ppos); /* * Mark the place where the formatting - but not * the scope - of the current block ends. */ mdoc_endbody_alloc(mdoc, line, ppos, atok, body, ENDBODY_SPACE); /* * If a block closing macro taking arguments * breaks another block, put the arguments * into the end marker and remeber the * end marker in order to close it out. */ if (maxargs) { endbody = mdoc->last; mdoc->next = MDOC_NEXT_CHILD; } break; } /* * When finding an open sub block, remember the last * open explicit block, or, in case there are only * implicit ones, the first open implicit block. */ if (later == NULL || ! (mdoc_macros[later->tok].flags & MDOC_EXPLICIT)) later = n; } rew_sub(MDOC_BODY, mdoc, tok, line, ppos); if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) { if (buf[*pos] != '\0') mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, line, ppos, "%s %s", mdoc_macronames[tok], buf + *pos); rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); return; } if (maxargs && endbody == NULL) { if (n == NULL) { /* * Stray .Ec without previous .Eo: * Break the output line, ignore any arguments. */ mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL); rew_elem(mdoc, MDOC_br); } else mdoc_tail_alloc(mdoc, line, ppos, atok); } flushed = n == NULL; for (j = 0; ; j++) { lastarg = *pos; if (j == maxargs && ! flushed) { if (endbody == NULL) rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); else rew_last(mdoc, endbody); flushed = 1; } ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_PUNCT || ac == ARGS_EOLN) break; ntok = ac == ARGS_QWORD ? MDOC_MAX : lookup(mdoc, tok, line, lastarg, p); if (ntok == MDOC_MAX) { dword(mdoc, line, lastarg, p, DELIM_MAX, MDOC_JOIN & mdoc_macros[tok].flags); continue; } if ( ! flushed) { if (endbody == NULL) rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); else rew_last(mdoc, endbody); flushed = 1; } mdoc->flags &= ~MDOC_NEWLINE; mdoc_macro(mdoc, ntok, line, lastarg, pos, buf); break; } if ( ! flushed) { if (endbody == NULL) rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); else rew_last(mdoc, endbody); } if (nl) append_delims(mdoc, line, pos, buf); } static void in_line(MACRO_PROT_ARGS) { int la, scope, cnt, firstarg, mayopen, nc, nl; enum mdoct ntok; enum margserr ac; enum mdelim d; struct mdoc_arg *arg; char *p; nl = MDOC_NEWLINE & mdoc->flags; /* * 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_Mt: /* FALLTHROUGH */ case MDOC_Nm: /* FALLTHROUGH */ case MDOC_Pa: nc = 1; break; default: nc = 0; break; } mdoc_argv(mdoc, line, tok, &arg, pos, buf); d = DELIM_NONE; firstarg = 1; mayopen = 1; for (cnt = scope = 0;; ) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); /* * At the end of a macro line, * opening delimiters do not suppress spacing. */ if (ac == ARGS_EOLN) { if (d == DELIM_OPEN) mdoc->last->flags &= ~MDOC_DELIMO; break; } /* * The rest of the macro line is only punctuation, * to be handled by append_delims(). * If there were no other arguments, * do not allow the first one to suppress spacing, * even if it turns out to be a closing one. */ if (ac == ARGS_PUNCT) { if (cnt == 0 && nc == 0) mdoc->flags |= MDOC_NODELIMC; break; } ntok = (ac == ARGS_QWORD || (tok == MDOC_Fn && !cnt)) ? MDOC_MAX : lookup(mdoc, tok, line, la, 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 (ntok != MDOC_MAX) { if (scope) rew_elem(mdoc, tok); if (nc && ! cnt) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); rew_last(mdoc, mdoc->last); } else if ( ! nc && ! cnt) { mdoc_argv_free(arg); mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, line, ppos, mdoc_macronames[tok]); } mdoc_macro(mdoc, ntok, line, la, pos, buf); if (nl) append_delims(mdoc, line, pos, buf); return; } /* * Non-quote-enclosed punctuation. Set up our scope, if * a word; rewind the scope, if a delimiter; then append * the word. */ d = ac == ARGS_QWORD ? DELIM_NONE : mdoc_isdelim(p); if (DELIM_NONE != d) { /* * If we encounter closing punctuation, no word * has been emitted, no scope is open, and we're * allowed to have an empty element, then start * a new scope. */ if ((d == DELIM_CLOSE || (d == DELIM_MIDDLE && tok == MDOC_Fl)) && !cnt && !scope && nc && mayopen) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); scope = 1; cnt++; if (tok == MDOC_Nm) mayopen = 0; } /* * Close out our scope, if one is open, before * any punctuation. */ if (scope) rew_elem(mdoc, tok); scope = 0; if (tok == MDOC_Fn) mayopen = 0; } else if (mayopen && !scope) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); scope = 1; cnt++; } dword(mdoc, line, la, p, d, MDOC_JOIN & mdoc_macros[tok].flags); /* * If the first argument is a closing delimiter, * do not suppress spacing before it. */ if (firstarg && d == DELIM_CLOSE && !nc) mdoc->last->flags &= ~MDOC_DELIMC; firstarg = 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 (scope && tok == MDOC_Fl) { rew_elem(mdoc, tok); scope = 0; } } if (scope) rew_elem(mdoc, tok); /* * 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 ( ! cnt) { if (nc) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); rew_last(mdoc, mdoc->last); } else { mdoc_argv_free(arg); mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, line, ppos, mdoc_macronames[tok]); } } if (nl) append_delims(mdoc, line, pos, buf); } static void blk_full(MACRO_PROT_ARGS) { int la, nl, parsed; struct mdoc_arg *arg; struct mdoc_node *head; /* save of head macro */ struct mdoc_node *body; /* save of body macro */ struct mdoc_node *n; enum margserr ac, lac; char *p; nl = MDOC_NEWLINE & mdoc->flags; /* Skip items outside lists. */ if (tok == MDOC_It) { for (n = mdoc->last; n; n = n->parent) if (n->tok == MDOC_Bl && n->type == MDOC_BLOCK && ! (n->flags & (MDOC_VALID | MDOC_BREAK))) break; if (n == NULL) { mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse, line, ppos, "It %s", buf + *pos); mdoc_elem_alloc(mdoc, line, ppos, MDOC_br, NULL); rew_elem(mdoc, MDOC_br); return; } } /* Close out prior implicit scope. */ if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) { rew_sub(MDOC_BODY, mdoc, tok, line, ppos); rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); } /* * This routine accommodates 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. */ mdoc_argv(mdoc, line, tok, &arg, pos, buf); mdoc_block_alloc(mdoc, line, ppos, tok, arg); head = body = NULL; /* * Exception: Heads of `It' macros in `-diag' lists are not * parsed, even though `It' macros in general are parsed. */ parsed = tok != MDOC_It || mdoc->last->parent->tok != MDOC_Bl || mdoc->last->parent->norm->Bl.type != LIST_diag; /* * The `Nd' macro has all arguments in its body: it's a hybrid * of block partial-explicit and full-implicit. Stupid. */ if (tok == MDOC_Nd) { head = mdoc_head_alloc(mdoc, line, ppos, tok); rew_last(mdoc, head); body = mdoc_body_alloc(mdoc, line, ppos, tok); } if (tok == MDOC_Bk) mdoc->flags |= MDOC_KEEP; ac = ARGS_PEND; for (;;) { la = *pos; lac = ac; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_PUNCT) break; if (ac == ARGS_EOLN) { if (lac != ARGS_PPHRASE && lac != ARGS_PHRASE) break; /* * This is necessary: if the last token on a * line is a `Ta' or tab, then we'll get * ARGS_EOLN, so we must be smart enough to * reopen our scope if the last parse was a * phrase or partial phrase. */ rew_sub(MDOC_BODY, mdoc, tok, line, ppos); body = mdoc_body_alloc(mdoc, line, ppos, tok); break; } /* * Emit leading punctuation (i.e., punctuation before * the MDOC_HEAD) for non-phrase types. */ if (head == NULL && ac != ARGS_PEND && ac != ARGS_PHRASE && ac != ARGS_PPHRASE && ac != ARGS_QWORD && mdoc_isdelim(p) == DELIM_OPEN) { dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } /* Open a head if one hasn't been opened. */ if (head == NULL) head = mdoc_head_alloc(mdoc, line, ppos, tok); if (ac == ARGS_PHRASE || ac == ARGS_PEND || ac == ARGS_PPHRASE) { /* * If we haven't opened a body yet, rewind the * head; if we have, rewind that instead. */ rew_sub(body ? MDOC_BODY : MDOC_HEAD, mdoc, tok, line, ppos); body = mdoc_body_alloc(mdoc, line, ppos, tok); /* * Process phrases: set whether we're in a * partial-phrase (this effects line handling) * then call down into the phrase parser. */ if (ac == ARGS_PPHRASE) mdoc->flags |= MDOC_PPHRASE; if (ac == ARGS_PEND && lac == ARGS_PPHRASE) mdoc->flags |= MDOC_PPHRASE; parse_rest(mdoc, MDOC_MAX, line, &la, buf); mdoc->flags &= ~MDOC_PPHRASE; continue; } if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed)) break; } if (head == NULL) head = mdoc_head_alloc(mdoc, line, ppos, tok); if (nl) append_delims(mdoc, line, pos, buf); if (body != NULL) goto out; /* * If there is an open (i.e., unvalidated) 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 = mdoc->last; n && n != head; n = n->parent) { if (n->type == MDOC_BLOCK && mdoc_macros[n->tok].flags & MDOC_EXPLICIT && ! (n->flags & MDOC_VALID)) { n->pending = head; return; } } /* Close out scopes to remain in a consistent state. */ rew_sub(MDOC_HEAD, mdoc, tok, line, ppos); mdoc_body_alloc(mdoc, line, ppos, tok); out: if (mdoc->flags & MDOC_FREECOL) { rew_sub(MDOC_BODY, mdoc, tok, line, ppos); rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); mdoc->flags &= ~MDOC_FREECOL; } } static void blk_part_imp(MACRO_PROT_ARGS) { int la, nl; enum margserr ac; char *p; struct mdoc_node *blk; /* saved block context */ struct mdoc_node *body; /* saved body context */ struct mdoc_node *n; nl = MDOC_NEWLINE & mdoc->flags; /* * 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. */ blk = mdoc_block_alloc(mdoc, line, ppos, tok, NULL); rew_last(mdoc, mdoc_head_alloc(mdoc, line, ppos, tok)); /* * 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; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_EOLN || ac == ARGS_PUNCT) break; if (body == NULL && ac != ARGS_QWORD && mdoc_isdelim(p) == DELIM_OPEN) { dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } if (body == NULL) body = mdoc_body_alloc(mdoc, line, ppos, tok); if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) break; } if (body == NULL) body = mdoc_body_alloc(mdoc, line, ppos, tok); /* * If there is an open sub-block requiring explicit close-out, * postpone closing out the current block * until the rew_sub() call closing out the sub-block. */ for (n = mdoc->last; n && n != body && n != blk->parent; n = n->parent) { if (n->type == MDOC_BLOCK && mdoc_macros[n->tok].flags & MDOC_EXPLICIT && ! (n->flags & MDOC_VALID)) { make_pending(n, tok, mdoc, line, ppos); mdoc_endbody_alloc(mdoc, line, ppos, tok, body, ENDBODY_NOSPACE); return; } } assert(n == body); rew_sub(MDOC_BODY, mdoc, tok, line, ppos); if (nl) append_delims(mdoc, line, pos, buf); rew_sub(MDOC_BLOCK, mdoc, tok, line, ppos); /* Move trailing .Ns out of scope. */ for (n = body->child; n && n->next; n = n->next) /* Do nothing. */ ; if (n && n->tok == MDOC_Ns) mdoc_node_relink(mdoc, n); } static void blk_part_exp(MACRO_PROT_ARGS) { int la, nl; enum margserr ac; struct mdoc_node *head; /* keep track of head */ struct mdoc_node *body; /* keep track of body */ char *p; nl = MDOC_NEWLINE & mdoc->flags; /* * 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. */ mdoc_block_alloc(mdoc, line, ppos, tok, NULL); for (head = body = NULL; ; ) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_PUNCT || ac == ARGS_EOLN) break; /* Flush out leading punctuation. */ if (head == NULL && ac != ARGS_QWORD && mdoc_isdelim(p) == DELIM_OPEN) { assert(NULL == body); dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } if (head == NULL) { assert(body == NULL); head = mdoc_head_alloc(mdoc, line, ppos, tok); } /* * `Eo' gobbles any data into the head, but most other * macros just immediately close out and begin the body. */ if (body == NULL) { assert(head); /* No check whether it's a macro! */ if (tok == MDOC_Eo) dword(mdoc, line, la, p, DELIM_MAX, 0); rew_sub(MDOC_HEAD, mdoc, tok, line, ppos); body = mdoc_body_alloc(mdoc, line, ppos, tok); if (tok == MDOC_Eo) continue; } assert(head != NULL && body != NULL); if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) break; } /* Clean-up to leave in a consistent state. */ if (head == NULL) mdoc_head_alloc(mdoc, line, ppos, tok); if (body == NULL) { rew_sub(MDOC_HEAD, mdoc, tok, line, ppos); mdoc_body_alloc(mdoc, line, ppos, tok); } if (nl) append_delims(mdoc, line, pos, buf); } static void in_line_argn(MACRO_PROT_ARGS) { int la, flushed, j, maxargs, nl; enum margserr ac; struct mdoc_arg *arg; char *p; enum mdoct ntok; nl = mdoc->flags & MDOC_NEWLINE; /* * 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_Ns: /* FALLTHROUGH */ case MDOC_Ux: maxargs = 0; break; case MDOC_Bx: /* FALLTHROUGH */ case MDOC_Es: /* FALLTHROUGH */ case MDOC_Xr: maxargs = 2; break; default: maxargs = 1; break; } mdoc_argv(mdoc, line, tok, &arg, pos, buf); p = NULL; flushed = j = 0; for (;;) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_PUNCT || ac == ARGS_EOLN) { if (j < 2 && tok == MDOC_Pf) mandoc_vmsg(MANDOCERR_PF_SKIP, mdoc->parse, line, ppos, "Pf %s", p == NULL ? "at eol" : p); break; } if ( ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) && ac != ARGS_QWORD && j == 0 && mdoc_isdelim(p) == DELIM_OPEN) { dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } else if (j == 0) mdoc_elem_alloc(mdoc, line, ppos, tok, arg); if (j == maxargs && ! flushed) { rew_elem(mdoc, tok); flushed = 1; } ntok = (ac == ARGS_QWORD || (tok == MDOC_Pf && j == 0)) ? MDOC_MAX : lookup(mdoc, tok, line, la, p); if (ntok != MDOC_MAX) { if ( ! flushed) rew_elem(mdoc, tok); flushed = 1; mdoc_macro(mdoc, ntok, line, la, pos, buf); j++; break; } if ( ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) && ac != ARGS_QWORD && ! flushed && mdoc_isdelim(p) != DELIM_NONE) { rew_elem(mdoc, tok); flushed = 1; } dword(mdoc, line, la, p, DELIM_MAX, MDOC_JOIN & mdoc_macros[tok].flags); j++; } if (j == 0) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); if (ac == ARGS_PUNCT && tok == MDOC_Pf) append_delims(mdoc, line, pos, buf); } if ( ! flushed) rew_elem(mdoc, tok); if (nl) append_delims(mdoc, line, pos, buf); } static void in_line_eoln(MACRO_PROT_ARGS) { struct mdoc_arg *arg; if (tok == MDOC_Pp) rew_sub(MDOC_BLOCK, mdoc, MDOC_Nm, line, ppos); mdoc_argv(mdoc, line, tok, &arg, pos, buf); mdoc_elem_alloc(mdoc, line, ppos, tok, arg); if (parse_rest(mdoc, tok, line, pos, buf)) return; rew_elem(mdoc, tok); } /* * The simplest argument parser available: Parse the remaining * words until the end of the phrase or line and return 0 * or until the next macro, call that macro, and return 1. */ static int parse_rest(struct mdoc *mdoc, enum mdoct tok, int line, int *pos, char *buf) { int la; for (;;) { la = *pos; if (mdoc_args(mdoc, line, pos, buf, tok, NULL) == ARGS_EOLN) return(0); if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) return(1); } } static void ctx_synopsis(MACRO_PROT_ARGS) { if (~mdoc->flags & (MDOC_SYNOPSIS | MDOC_NEWLINE)) in_line(mdoc, tok, line, ppos, pos, buf); else if (tok == MDOC_Nm) blk_full(mdoc, tok, line, ppos, pos, buf); else { assert(tok == MDOC_Vt); blk_part_imp(mdoc, tok, line, ppos, pos, buf); } } /* * 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 void phrase_ta(MACRO_PROT_ARGS) { struct mdoc_node *n; /* Make sure we are in a column list or ignore this macro. */ n = mdoc->last; while (n != NULL && (n->tok != MDOC_Bl || n->flags & (MDOC_VALID | MDOC_BREAK))) n = n->parent; if (n == NULL || n->norm->Bl.type != LIST_column) { mandoc_msg(MANDOCERR_TA_STRAY, mdoc->parse, line, ppos, "Ta"); return; } /* Advance to the next column. */ rew_sub(MDOC_BODY, mdoc, MDOC_It, line, ppos); mdoc_body_alloc(mdoc, line, ppos, MDOC_It); parse_rest(mdoc, MDOC_MAX, line, pos, buf); }