/* $Id: mdoc_macro.c,v 1.224 2017/05/30 16:22:03 schwarze Exp $ */ /* * Copyright (c) 2008-2012 Kristaps Dzonsons * Copyright (c) 2010, 2012-2017 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 AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 "mandoc.h" #include "roff.h" #include "mdoc.h" #include "libmandoc.h" #include "roff_int.h" #include "libmdoc.h" 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 append_delims(struct roff_man *, int, int *, char *); static void dword(struct roff_man *, int, int, const char *, enum mdelim, int); static int find_pending(struct roff_man *, enum roff_tok, int, int, struct roff_node *); static int lookup(struct roff_man *, int, int, int, const char *); static int macro_or_word(MACRO_PROT_ARGS, int); static void break_intermediate(struct roff_node *, struct roff_node *); static int parse_rest(struct roff_man *, enum roff_tok, int, int *, char *); static enum roff_tok rew_alt(enum roff_tok); static void rew_elem(struct roff_man *, enum roff_tok); static void rew_last(struct roff_man *, const struct roff_node *); static void rew_pending(struct roff_man *, const struct roff_node *); const struct mdoc_macro __mdoc_macros[MDOC_MAX - MDOC_Dd] = { { 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_argn, MDOC_CALLABLE | MDOC_PARSED | MDOC_IGNDELIM | MDOC_JOIN }, /* Ap */ { 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 }, /* %U */ { phrase_ta, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* Ta */ }; const struct mdoc_macro *const mdoc_macros = __mdoc_macros - MDOC_Dd; /* * 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_endparse(struct roff_man *mdoc) { struct roff_node *n; /* Scan for open explicit scopes. */ n = mdoc->last->flags & NODE_VALID ? mdoc->last->parent : mdoc->last; for ( ; n; n = n->parent) if (n->type == ROFFT_BLOCK && mdoc_macros[n->tok].flags & MDOC_EXPLICIT) mandoc_msg(MANDOCERR_BLK_NOEND, mdoc->parse, n->line, n->pos, roff_name[n->tok]); /* Rewind to the first. */ rew_last(mdoc, mdoc->first); mdoc_state_reset(mdoc); } /* * Look up the macro at *p called by "from", * or as a line macro if from == TOKEN_NONE. */ static int lookup(struct roff_man *mdoc, int from, int line, int ppos, const char *p) { enum roff_tok res; if (mdoc->flags & MDOC_PHRASEQF) { mdoc->flags &= ~MDOC_PHRASEQF; return TOKEN_NONE; } if (from == TOKEN_NONE || mdoc_macros[from].flags & MDOC_PARSED) { res = roffhash_find(mdoc->mdocmac, p, 0); if (res != TOKEN_NONE) { if (mdoc_macros[res].flags & MDOC_CALLABLE) return res; mandoc_msg(MANDOCERR_MACRO_CALL, mdoc->parse, line, ppos, p); } } return TOKEN_NONE; } /* * Rewind up to and including a specific node. */ static void rew_last(struct roff_man *mdoc, const struct roff_node *to) { if (to->flags & NODE_VALID) return; while (mdoc->last != to) { mdoc_state(mdoc, mdoc->last); mdoc->last->flags |= NODE_VALID | NODE_ENDED; mdoc->last = mdoc->last->parent; } mdoc_state(mdoc, mdoc->last); mdoc->last->flags |= NODE_VALID | NODE_ENDED; mdoc->next = ROFF_NEXT_SIBLING; } /* * Rewind up to a specific block, including all blocks that broke it. */ static void rew_pending(struct roff_man *mdoc, const struct roff_node *n) { for (;;) { rew_last(mdoc, n); if (mdoc->last == n) { switch (n->type) { case ROFFT_HEAD: roff_body_alloc(mdoc, n->line, n->pos, n->tok); break; case ROFFT_BLOCK: break; default: return; } if ( ! (n->flags & NODE_BROKEN)) return; } else n = mdoc->last; for (;;) { if ((n = n->parent) == NULL) return; if (n->type == ROFFT_BLOCK || n->type == ROFFT_HEAD) { if (n->flags & NODE_ENDED) break; else return; } } } } /* * For a block closing macro, return the corresponding opening one. * Otherwise, return the macro itself. */ static enum roff_tok rew_alt(enum roff_tok 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; } } static void rew_elem(struct roff_man *mdoc, enum roff_tok tok) { struct roff_node *n; n = mdoc->last; if (n->type != ROFFT_ELEM) n = n->parent; assert(n->type == ROFFT_ELEM); assert(tok == n->tok); rew_last(mdoc, n); } static void break_intermediate(struct roff_node *n, struct roff_node *breaker) { if (n != breaker && n->type != ROFFT_BLOCK && n->type != ROFFT_HEAD && (n->type != ROFFT_BODY || n->end != ENDBODY_NOT)) n = n->parent; while (n != breaker) { if ( ! (n->flags & NODE_VALID)) n->flags |= NODE_BROKEN; n = n->parent; } } /* * If there is an open sub-block of the target requiring * explicit close-out, postpone closing out the target until * the rew_pending() call closing out the sub-block. */ static int find_pending(struct roff_man *mdoc, enum roff_tok tok, int line, int ppos, struct roff_node *target) { struct roff_node *n; int irc; if (target->flags & NODE_VALID) return 0; irc = 0; for (n = mdoc->last; n != NULL && n != target; n = n->parent) { if (n->flags & NODE_ENDED) continue; if (n->type == ROFFT_BLOCK && mdoc_macros[n->tok].flags & MDOC_EXPLICIT) { irc = 1; break_intermediate(mdoc->last, target); if (target->type == ROFFT_HEAD) target->flags |= NODE_ENDED; else if ( ! (target->flags & NODE_ENDED)) { mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos, "%s breaks %s", roff_name[tok], roff_name[n->tok]); mdoc_endbody_alloc(mdoc, line, ppos, tok, target); } } } return irc; } /* * Allocate a word and check whether it's punctuation or not. * Punctuation consists of those tokens found in mdoc_isdelim(). */ static void dword(struct roff_man *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 == ROFFT_TEXT && mdoc_isdelim(mdoc->last->string) == DELIM_NONE) { roff_word_append(mdoc, p); return; } roff_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 |= NODE_DELIMO; else if (d == DELIM_CLOSE && ! (mdoc->flags & MDOC_NODELIMC) && mdoc->last->parent->tok != MDOC_Fd) mdoc->last->flags |= NODE_DELIMC; mdoc->flags &= ~MDOC_NODELIMC; } static void append_delims(struct roff_man *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, TOKEN_NONE, &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 |= NODE_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; int ntok; p = buf + ppos; ntok = TOKEN_NONE; if (*p == '"') p++; else if (parsed && ! (mdoc->flags & MDOC_PHRASELIT)) ntok = lookup(mdoc, tok, line, ppos, p); if (ntok == TOKEN_NONE) { dword(mdoc, line, ppos, p, DELIM_MAX, tok == TOKEN_NONE || mdoc_macros[tok].flags & MDOC_JOIN); return 0; } else { if (tok != TOKEN_NONE && mdoc_macros[tok].fp == in_line_eoln) rew_elem(mdoc, tok); mdoc_macro(mdoc, ntok, line, ppos, pos, buf); if (tok == TOKEN_NONE) append_delims(mdoc, line, pos, buf); return 1; } } /* * Close out block partial/full explicit. */ static void blk_exp_close(MACRO_PROT_ARGS) { struct roff_node *body; /* Our own body. */ struct roff_node *endbody; /* Our own end marker. */ struct roff_node *itblk; /* An It block starting later. */ struct roff_node *later; /* A sub-block starting later. */ struct roff_node *n; /* Search back to our block. */ struct roff_node *target; /* For find_pending(). */ int j, lastarg, maxargs, nl, pending; enum margserr ac; enum roff_tok 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 the beginning of our own body. */ atok = rew_alt(tok); body = NULL; for (n = mdoc->last; n; n = n->parent) { if (n->flags & NODE_ENDED || n->tok != atok || n->type != ROFFT_BODY || n->end != ENDBODY_NOT) continue; body = n; break; } /* * Search backwards for beginnings of blocks, * both of our own and of pending sub-blocks. */ endbody = itblk = later = NULL; for (n = mdoc->last; n; n = n->parent) { if (n->flags & NODE_ENDED) continue; /* * Mismatching end macros can never break anything * and we only care about the breaking of BLOCKs. */ if (body == NULL || n->type != ROFFT_BLOCK) continue; /* * SYNOPSIS name blocks can not be broken themselves, * but they do get broken together with a broken child. */ if (n->tok == MDOC_Nm) { if (later != NULL) n->flags |= NODE_BROKEN | NODE_ENDED; continue; } if (n->tok == MDOC_It) { itblk = n; continue; } if (atok == n->tok) { /* * 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 && itblk == NULL)) break; /* * When there is a pending sub block, postpone * closing out the current block until the * rew_pending() closing out the sub-block. * Mark the place where the formatting - but not * the scope - of the current block ends. */ mandoc_vmsg(MANDOCERR_BLK_NEST, mdoc->parse, line, ppos, "%s breaks %s", roff_name[atok], roff_name[later->tok]); endbody = mdoc_endbody_alloc(mdoc, line, ppos, atok, body); if (tok == MDOC_El) itblk->flags |= NODE_ENDED | NODE_BROKEN; /* * If a block closing macro taking arguments * breaks another block, put the arguments * into the end marker. */ if (maxargs) mdoc->next = ROFF_NEXT_CHILD; break; } /* * Explicit blocks close out description lines, but * even those can get broken together with a child. */ if (n->tok == MDOC_Nd) { if (later != NULL) n->flags |= NODE_BROKEN | NODE_ENDED; else rew_last(mdoc, n); continue; } /* Breaking an open sub block. */ break_intermediate(mdoc->last, body); n->flags |= NODE_BROKEN; if (later == NULL) later = n; } if (body == NULL) { mandoc_msg(MANDOCERR_BLK_NOTOPEN, mdoc->parse, line, ppos, roff_name[tok]); if (maxargs && endbody == NULL) { /* * Stray .Ec without previous .Eo: * Break the output line, keep the arguments. */ roff_elem_alloc(mdoc, line, ppos, ROFF_br); rew_elem(mdoc, ROFF_br); } } else if (endbody == NULL) { rew_last(mdoc, body); if (maxargs) mdoc_tail_alloc(mdoc, line, ppos, atok); } if ( ! (mdoc_macros[tok].flags & MDOC_PARSED)) { if (buf[*pos] != '\0') mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, line, ppos, "%s %s", roff_name[tok], buf + *pos); if (endbody == NULL && n != NULL) rew_pending(mdoc, n); return; } if (endbody != NULL) n = endbody; ntok = TOKEN_NONE; for (j = 0; ; j++) { lastarg = *pos; if (j == maxargs && n != NULL) rew_last(mdoc, n); ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_PUNCT || ac == ARGS_EOLN) break; ntok = lookup(mdoc, tok, line, lastarg, p); if (ntok == TOKEN_NONE) { dword(mdoc, line, lastarg, p, DELIM_MAX, MDOC_JOIN & mdoc_macros[tok].flags); continue; } if (n != NULL) rew_last(mdoc, n); mdoc->flags &= ~MDOC_NEWLINE; mdoc_macro(mdoc, ntok, line, lastarg, pos, buf); break; } if (n != NULL) { pending = 0; if (ntok != TOKEN_NONE && n->flags & NODE_BROKEN) { target = n; do target = target->parent; while ( ! (target->flags & NODE_ENDED)); pending = find_pending(mdoc, ntok, line, ppos, target); } if ( ! pending) rew_pending(mdoc, n); } if (nl) append_delims(mdoc, line, pos, buf); } static void in_line(MACRO_PROT_ARGS) { int la, scope, cnt, firstarg, mayopen, nc, nl; enum roff_tok 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: case MDOC_Ar: case MDOC_Fl: case MDOC_Mt: case MDOC_Nm: 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 &= ~NODE_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 || tok == MDOC_An)) mdoc->flags |= MDOC_NODELIMC; break; } ntok = (tok == MDOC_Fn && !cnt) ? TOKEN_NONE : 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 != TOKEN_NONE) { 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, roff_name[tok]); } mdoc_macro(mdoc, ntok, line, la, pos, buf); if (nl) append_delims(mdoc, line, pos, buf); return; } /* * Handle punctuation. Set up our scope, if a word; * rewind the scope, if a delimiter; then append the word. */ if ((d = mdoc_isdelim(p)) != DELIM_NONE) { /* * 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 && tok != MDOC_Lk) { 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_macros[tok].flags & MDOC_JOIN); /* * If the first argument is a closing delimiter, * do not suppress spacing before it. */ if (firstarg && d == DELIM_CLOSE && !nc) mdoc->last->flags &= ~NODE_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 && tok != MDOC_Lk) { rew_elem(mdoc, tok); scope = 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 ( ! 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, roff_name[tok]); } } if (nl) append_delims(mdoc, line, pos, buf); if (scope) rew_elem(mdoc, tok); } static void blk_full(MACRO_PROT_ARGS) { int la, nl, parsed; struct mdoc_arg *arg; struct roff_node *blk; /* Our own or a broken block. */ struct roff_node *head; /* Our own head. */ struct roff_node *body; /* Our own body. */ struct roff_node *n; enum margserr ac, lac; char *p; nl = MDOC_NEWLINE & mdoc->flags; if (buf[*pos] == '\0' && (tok == MDOC_Sh || tok == MDOC_Ss)) { mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, line, ppos, roff_name[tok]); return; } if ( ! (mdoc_macros[tok].flags & MDOC_EXPLICIT)) { /* Here, tok is one of Sh Ss Nm Nd It. */ blk = NULL; for (n = mdoc->last; n != NULL; n = n->parent) { if (n->flags & NODE_ENDED) { if ( ! (n->flags & NODE_VALID)) n->flags |= NODE_BROKEN; continue; } if (n->type != ROFFT_BLOCK) continue; if (tok == MDOC_It && n->tok == MDOC_Bl) { if (blk != NULL) { mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse, line, ppos, "It breaks %s", roff_name[blk->tok]); rew_pending(mdoc, blk); } break; } if (mdoc_macros[n->tok].flags & MDOC_EXPLICIT) { switch (tok) { case MDOC_Sh: case MDOC_Ss: mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse, line, ppos, "%s breaks %s", roff_name[tok], roff_name[n->tok]); rew_pending(mdoc, n); n = mdoc->last; continue; case MDOC_It: /* Delay in case it's astray. */ blk = n; continue; default: break; } break; } /* Here, n is one of Sh Ss Nm Nd It. */ if (tok != MDOC_Sh && (n->tok == MDOC_Sh || (tok != MDOC_Ss && (n->tok == MDOC_Ss || (tok != MDOC_It && n->tok == MDOC_It))))) break; /* Item breaking an explicit block. */ if (blk != NULL) { mandoc_vmsg(MANDOCERR_BLK_BROKEN, mdoc->parse, line, ppos, "It breaks %s", roff_name[blk->tok]); rew_pending(mdoc, blk); blk = NULL; } /* Close out prior implicit scopes. */ rew_pending(mdoc, n); } /* Skip items outside lists. */ if (tok == MDOC_It && (n == NULL || n->tok != MDOC_Bl)) { mandoc_vmsg(MANDOCERR_IT_STRAY, mdoc->parse, line, ppos, "It %s", buf + *pos); roff_elem_alloc(mdoc, line, ppos, ROFF_br); rew_elem(mdoc, ROFF_br); return; } } /* * 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); blk = 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 = roff_head_alloc(mdoc, line, ppos, tok); rew_last(mdoc, head); body = roff_body_alloc(mdoc, line, ppos, tok); } if (tok == MDOC_Bk) mdoc->flags |= MDOC_KEEP; ac = ARGS_EOLN; for (;;) { /* * If we are right after a tab character, * do not parse the first word for macros. */ if (mdoc->flags & MDOC_PHRASEQN) { mdoc->flags &= ~MDOC_PHRASEQN; mdoc->flags |= MDOC_PHRASEQF; } la = *pos; lac = ac; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_EOLN) { if (lac != ARGS_PHRASE || ! (mdoc->flags & MDOC_PHRASEQF)) break; /* * This line ends in a tab; start the next * column now, with a leading blank. */ if (body != NULL) rew_last(mdoc, body); body = roff_body_alloc(mdoc, line, ppos, tok); roff_word_alloc(mdoc, line, ppos, "\\&"); break; } if (tok == MDOC_Bd || tok == MDOC_Bk) { mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse, line, la, "%s ... %s", roff_name[tok], buf + la); break; } if (tok == MDOC_Rs) { mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, line, la, "Rs %s", buf + la); break; } if (ac == ARGS_PUNCT) break; /* * Emit leading punctuation (i.e., punctuation before * the ROFFT_HEAD) for non-phrase types. */ if (head == NULL && ac != ARGS_PHRASE && 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 = roff_head_alloc(mdoc, line, ppos, tok); if (ac == ARGS_PHRASE) { /* * If we haven't opened a body yet, rewind the * head; if we have, rewind that instead. */ rew_last(mdoc, body == NULL ? head : body); body = roff_body_alloc(mdoc, line, ppos, tok); /* Process to the tab or to the end of the line. */ mdoc->flags |= MDOC_PHRASE; parse_rest(mdoc, TOKEN_NONE, line, &la, buf); mdoc->flags &= ~MDOC_PHRASE; /* There may have been `Ta' macros. */ while (body->next != NULL) body = body->next; continue; } if (macro_or_word(mdoc, tok, line, la, pos, buf, parsed)) break; } if (blk->flags & NODE_VALID) return; if (head == NULL) head = roff_head_alloc(mdoc, line, ppos, tok); if (nl && tok != MDOC_Bd && tok != MDOC_Bl && tok != MDOC_Rs) append_delims(mdoc, line, pos, buf); if (body != NULL) goto out; if (find_pending(mdoc, tok, line, ppos, head)) return; /* Close out scopes to remain in a consistent state. */ rew_last(mdoc, head); body = roff_body_alloc(mdoc, line, ppos, tok); out: if (mdoc->flags & MDOC_FREECOL) { rew_last(mdoc, body); rew_last(mdoc, blk); mdoc->flags &= ~MDOC_FREECOL; } } static void blk_part_imp(MACRO_PROT_ARGS) { int la, nl; enum margserr ac; char *p; struct roff_node *blk; /* saved block context */ struct roff_node *body; /* saved body context */ struct roff_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, roff_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 && mdoc_isdelim(p) == DELIM_OPEN) { dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } if (body == NULL) body = roff_body_alloc(mdoc, line, ppos, tok); if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) break; } if (body == NULL) body = roff_body_alloc(mdoc, line, ppos, tok); if (find_pending(mdoc, tok, line, ppos, body)) return; rew_last(mdoc, body); if (nl) append_delims(mdoc, line, pos, buf); rew_pending(mdoc, blk); /* 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 roff_node *head; /* keep track of head */ 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. */ roff_block_alloc(mdoc, line, ppos, tok); head = NULL; for (;;) { 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 && mdoc_isdelim(p) == DELIM_OPEN) { dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } if (head == NULL) { head = roff_head_alloc(mdoc, line, ppos, tok); if (tok == MDOC_Eo) /* Not parsed. */ dword(mdoc, line, la, p, DELIM_MAX, 0); rew_last(mdoc, head); roff_body_alloc(mdoc, line, ppos, tok); if (tok == MDOC_Eo) continue; } if (macro_or_word(mdoc, tok, line, la, pos, buf, 1)) break; } /* Clean-up to leave in a consistent state. */ if (head == NULL) { rew_last(mdoc, roff_head_alloc(mdoc, line, ppos, tok)); roff_body_alloc(mdoc, line, ppos, tok); } if (nl) append_delims(mdoc, line, pos, buf); } static void in_line_argn(MACRO_PROT_ARGS) { struct mdoc_arg *arg; char *p; enum margserr ac; enum roff_tok ntok; int state; /* arg#; -1: not yet open; -2: closed */ int la, maxargs, nl; 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: case MDOC_Ns: case MDOC_Ux: maxargs = 0; break; case MDOC_Bx: case MDOC_Es: case MDOC_Xr: maxargs = 2; break; default: maxargs = 1; break; } mdoc_argv(mdoc, line, tok, &arg, pos, buf); state = -1; p = NULL; for (;;) { la = *pos; ac = mdoc_args(mdoc, line, pos, buf, tok, &p); if (ac == ARGS_WORD && state == -1 && ! (mdoc_macros[tok].flags & MDOC_IGNDELIM) && mdoc_isdelim(p) == DELIM_OPEN) { dword(mdoc, line, la, p, DELIM_OPEN, 0); continue; } if (state == -1 && tok != MDOC_In && tok != MDOC_St && tok != MDOC_Xr) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); state = 0; } if (ac == ARGS_PUNCT || ac == ARGS_EOLN) { if (abs(state) < 2 && tok == MDOC_Pf) mandoc_vmsg(MANDOCERR_PF_SKIP, mdoc->parse, line, ppos, "Pf %s", p == NULL ? "at eol" : p); break; } if (state == maxargs) { rew_elem(mdoc, tok); state = -2; } ntok = (tok == MDOC_Pf && state == 0) ? TOKEN_NONE : lookup(mdoc, tok, line, la, p); if (ntok != TOKEN_NONE) { if (state >= 0) { rew_elem(mdoc, tok); state = -2; } mdoc_macro(mdoc, ntok, line, la, pos, buf); break; } if (mdoc_macros[tok].flags & MDOC_IGNDELIM || mdoc_isdelim(p) == DELIM_NONE) { if (state == -1) { mdoc_elem_alloc(mdoc, line, ppos, tok, arg); state = 1; } else if (state >= 0) state++; } else if (state >= 0) { rew_elem(mdoc, tok); state = -2; } dword(mdoc, line, la, p, DELIM_MAX, mdoc_macros[tok].flags & MDOC_JOIN); } if (state == -1) { mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, line, ppos, roff_name[tok]); return; } if (state == 0 && tok == MDOC_Pf) append_delims(mdoc, line, pos, buf); if (state >= 0) rew_elem(mdoc, tok); if (nl) append_delims(mdoc, line, pos, buf); } static void in_line_eoln(MACRO_PROT_ARGS) { struct roff_node *n; struct mdoc_arg *arg; if ((tok == MDOC_Pp || tok == MDOC_Lp) && ! (mdoc->flags & MDOC_SYNOPSIS)) { n = mdoc->last; if (mdoc->next == ROFF_NEXT_SIBLING) n = n->parent; if (n->tok == MDOC_Nm) rew_last(mdoc, n->parent); } if (buf[*pos] == '\0' && (tok == MDOC_Fd || *roff_name[tok] == '%')) { mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse, line, ppos, roff_name[tok]); return; } 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 roff_man *mdoc, enum roff_tok 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 roff_node *body, *n; /* Make sure we are in a column list or ignore this macro. */ body = NULL; for (n = mdoc->last; n != NULL; n = n->parent) { if (n->flags & NODE_ENDED) continue; if (n->tok == MDOC_It && n->type == ROFFT_BODY) body = n; if (n->tok == MDOC_Bl && n->end == ENDBODY_NOT) break; } 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_last(mdoc, body); roff_body_alloc(mdoc, line, ppos, MDOC_It); parse_rest(mdoc, TOKEN_NONE, line, pos, buf); }