=================================================================== RCS file: /cvs/mandoc/mdoc_argv.c,v retrieving revision 1.20 retrieving revision 1.117 diff -u -p -r1.20 -r1.117 --- mandoc/mdoc_argv.c 2009/07/20 14:09:38 1.20 +++ mandoc/mdoc_argv.c 2018/12/14 05:18:02 1.117 @@ -1,70 +1,73 @@ -/* $Id: mdoc_argv.c,v 1.20 2009/07/20 14:09:38 kristaps Exp $ */ +/* $Id: mdoc_argv.c,v 1.117 2018/12/14 05:18:02 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2012, 2014-2018 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 + * 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 AUTHOR BE LIABLE FOR + * 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 "mandoc_aux.h" +#include "mandoc.h" +#include "roff.h" +#include "mdoc.h" +#include "libmandoc.h" +#include "roff_int.h" #include "libmdoc.h" -/* - * Routines to parse arguments of macros. Arguments follow the syntax - * of `-arg [val [valN...]]'. Arguments come in all types: quoted - * arguments, multiple arguments per value, no-value arguments, etc. - * - * There's no limit to the number or arguments that may be allocated. - */ +#define MULTI_STEP 5 /* pre-allocate argument values */ +#define DELIMSZ 6 /* max possible size of a delimiter */ -/* FIXME .Bf Li raises "macro-like parameter". */ +enum argsflag { + ARGSFL_NONE = 0, + ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */ + ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */ +}; -#define ARGS_DELIM (1 << 1) -#define ARGS_TABSEP (1 << 2) +enum argvflag { + ARGV_NONE, /* no args to flag (e.g., -split) */ + ARGV_SINGLE, /* one arg to flag (e.g., -file xxx) */ + ARGV_MULTI /* multiple args (e.g., -column xxx yyy) */ +}; -#define ARGV_NONE (1 << 0) -#define ARGV_SINGLE (1 << 1) -#define ARGV_MULTI (1 << 2) -#define ARGV_OPT_SINGLE (1 << 3) +struct mdocarg { + enum argsflag flags; + const enum mdocargt *argvs; +}; -#define MULTI_STEP 5 - -static int argv_a2arg(int, const char *); -static int args(struct mdoc *, int, int *, - char *, int, char **); -static int argv(struct mdoc *, int, +static void argn_free(struct mdoc_arg *, int); +static enum margserr args(struct roff_man *, int, int *, + char *, enum argsflag, char **); +static int args_checkpunct(const char *, int); +static void argv_multi(struct roff_man *, int, struct mdoc_argv *, int *, char *); -static int argv_single(struct mdoc *, int, +static void argv_single(struct roff_man *, int, struct mdoc_argv *, int *, char *); -static int argv_opt_single(struct mdoc *, int, - struct mdoc_argv *, int *, char *); -static int argv_multi(struct mdoc *, int, - struct mdoc_argv *, int *, char *); -/* Per-argument flags. */ - -static int mdoc_argvflags[MDOC_ARG_MAX] = { +static const enum argvflag argvflags[MDOC_ARG_MAX] = { ARGV_NONE, /* MDOC_Split */ ARGV_NONE, /* MDOC_Nosplit */ ARGV_NONE, /* MDOC_Ragged */ ARGV_NONE, /* MDOC_Unfilled */ ARGV_NONE, /* MDOC_Literal */ - ARGV_NONE, /* MDOC_File */ + ARGV_SINGLE, /* MDOC_File */ ARGV_SINGLE, /* MDOC_Offset */ ARGV_NONE, /* MDOC_Bullet */ ARGV_NONE, /* MDOC_Dash */ @@ -79,7 +82,7 @@ static int mdoc_argvflags[MDOC_ARG_MAX] = { ARGV_MULTI, /* MDOC_Column */ ARGV_SINGLE, /* MDOC_Width */ ARGV_NONE, /* MDOC_Compact */ - ARGV_OPT_SINGLE, /* MDOC_Std */ + ARGV_NONE, /* MDOC_Std */ ARGV_NONE, /* MDOC_Filled */ ARGV_NONE, /* MDOC_Words */ ARGV_NONE, /* MDOC_Emphasis */ @@ -87,218 +90,291 @@ static int mdoc_argvflags[MDOC_ARG_MAX] = { ARGV_NONE /* MDOC_Symbolic */ }; -static int mdoc_argflags[MDOC_MAX] = { - 0, /* Ap */ - 0, /* Dd */ - 0, /* Dt */ - 0, /* Os */ - 0, /* Sh */ - 0, /* Ss */ - ARGS_DELIM, /* Pp */ - ARGS_DELIM, /* D1 */ - ARGS_DELIM, /* Dl */ - 0, /* Bd */ - 0, /* Ed */ - 0, /* Bl */ - 0, /* El */ - 0, /* It */ - ARGS_DELIM, /* Ad */ - ARGS_DELIM, /* An */ - ARGS_DELIM, /* Ar */ - 0, /* Cd */ - ARGS_DELIM, /* Cm */ - ARGS_DELIM, /* Dv */ - ARGS_DELIM, /* Er */ - ARGS_DELIM, /* Ev */ - 0, /* Ex */ - ARGS_DELIM, /* Fa */ - 0, /* Fd */ - ARGS_DELIM, /* Fl */ - ARGS_DELIM, /* Fn */ - ARGS_DELIM, /* Ft */ - ARGS_DELIM, /* Ic */ - 0, /* In */ - ARGS_DELIM, /* Li */ - 0, /* Nd */ - ARGS_DELIM, /* Nm */ - ARGS_DELIM, /* Op */ - 0, /* Ot */ - ARGS_DELIM, /* Pa */ - 0, /* Rv */ - ARGS_DELIM, /* St */ - ARGS_DELIM, /* Va */ - ARGS_DELIM, /* Vt */ - ARGS_DELIM, /* Xr */ - 0, /* %A */ - 0, /* %B */ - 0, /* %D */ - 0, /* %I */ - 0, /* %J */ - 0, /* %N */ - 0, /* %O */ - 0, /* %P */ - 0, /* %R */ - 0, /* %T */ - 0, /* %V */ - ARGS_DELIM, /* Ac */ - 0, /* Ao */ - ARGS_DELIM, /* Aq */ - ARGS_DELIM, /* At */ - ARGS_DELIM, /* Bc */ - 0, /* Bf */ - 0, /* Bo */ - ARGS_DELIM, /* Bq */ - ARGS_DELIM, /* Bsx */ - ARGS_DELIM, /* Bx */ - 0, /* Db */ - ARGS_DELIM, /* Dc */ - 0, /* Do */ - ARGS_DELIM, /* Dq */ - ARGS_DELIM, /* Ec */ - 0, /* Ef */ - ARGS_DELIM, /* Em */ - 0, /* Eo */ - ARGS_DELIM, /* Fx */ - ARGS_DELIM, /* Ms */ - ARGS_DELIM, /* No */ - ARGS_DELIM, /* Ns */ - ARGS_DELIM, /* Nx */ - ARGS_DELIM, /* Ox */ - ARGS_DELIM, /* Pc */ - ARGS_DELIM, /* Pf */ - 0, /* Po */ - ARGS_DELIM, /* Pq */ - ARGS_DELIM, /* Qc */ - ARGS_DELIM, /* Ql */ - 0, /* Qo */ - ARGS_DELIM, /* Qq */ - 0, /* Re */ - 0, /* Rs */ - ARGS_DELIM, /* Sc */ - 0, /* So */ - ARGS_DELIM, /* Sq */ - 0, /* Sm */ - ARGS_DELIM, /* Sx */ - ARGS_DELIM, /* Sy */ - ARGS_DELIM, /* Tn */ - ARGS_DELIM, /* Ux */ - ARGS_DELIM, /* Xc */ - 0, /* Xo */ - 0, /* Fo */ - 0, /* Fc */ - 0, /* Oo */ - ARGS_DELIM, /* Oc */ - 0, /* Bk */ - 0, /* Ek */ - 0, /* Bt */ - 0, /* Hf */ - 0, /* Fr */ - 0, /* Ud */ - 0, /* Lb */ - ARGS_DELIM, /* Lp */ - ARGS_DELIM, /* Lk */ - ARGS_DELIM, /* Mt */ - ARGS_DELIM, /* Brq */ - 0, /* Bro */ - ARGS_DELIM, /* Brc */ - 0, /* %C */ - 0, /* Es */ - 0, /* En */ - 0, /* Dx */ - 0, /* %Q */ - 0, /* br */ - 0, /* sp */ +static const enum mdocargt args_Ex[] = { + MDOC_Std, + MDOC_ARG_MAX }; +static const enum mdocargt args_An[] = { + MDOC_Split, + MDOC_Nosplit, + MDOC_ARG_MAX +}; +static const enum mdocargt args_Bd[] = { + MDOC_Ragged, + MDOC_Unfilled, + MDOC_Filled, + MDOC_Literal, + MDOC_File, + MDOC_Offset, + MDOC_Compact, + MDOC_Centred, + MDOC_ARG_MAX +}; + +static const enum mdocargt args_Bf[] = { + MDOC_Emphasis, + MDOC_Literal, + MDOC_Symbolic, + MDOC_ARG_MAX +}; + +static const enum mdocargt args_Bk[] = { + MDOC_Words, + MDOC_ARG_MAX +}; + +static const enum mdocargt args_Bl[] = { + MDOC_Bullet, + MDOC_Dash, + MDOC_Hyphen, + MDOC_Item, + MDOC_Enum, + MDOC_Tag, + MDOC_Diag, + MDOC_Hang, + MDOC_Ohang, + MDOC_Inset, + MDOC_Column, + MDOC_Width, + MDOC_Offset, + MDOC_Compact, + MDOC_Nested, + MDOC_ARG_MAX +}; + +static const struct mdocarg mdocargs[MDOC_MAX - MDOC_Dd] = { + { ARGSFL_NONE, NULL }, /* Dd */ + { ARGSFL_NONE, NULL }, /* Dt */ + { ARGSFL_NONE, NULL }, /* Os */ + { ARGSFL_NONE, NULL }, /* Sh */ + { ARGSFL_NONE, NULL }, /* Ss */ + { ARGSFL_NONE, NULL }, /* Pp */ + { ARGSFL_DELIM, NULL }, /* D1 */ + { ARGSFL_DELIM, NULL }, /* Dl */ + { ARGSFL_NONE, args_Bd }, /* Bd */ + { ARGSFL_NONE, NULL }, /* Ed */ + { ARGSFL_NONE, args_Bl }, /* Bl */ + { ARGSFL_NONE, NULL }, /* El */ + { ARGSFL_NONE, NULL }, /* It */ + { ARGSFL_DELIM, NULL }, /* Ad */ + { ARGSFL_DELIM, args_An }, /* An */ + { ARGSFL_DELIM, NULL }, /* Ap */ + { ARGSFL_DELIM, NULL }, /* Ar */ + { ARGSFL_DELIM, NULL }, /* Cd */ + { ARGSFL_DELIM, NULL }, /* Cm */ + { ARGSFL_DELIM, NULL }, /* Dv */ + { ARGSFL_DELIM, NULL }, /* Er */ + { ARGSFL_DELIM, NULL }, /* Ev */ + { ARGSFL_NONE, args_Ex }, /* Ex */ + { ARGSFL_DELIM, NULL }, /* Fa */ + { ARGSFL_NONE, NULL }, /* Fd */ + { ARGSFL_DELIM, NULL }, /* Fl */ + { ARGSFL_DELIM, NULL }, /* Fn */ + { ARGSFL_DELIM, NULL }, /* Ft */ + { ARGSFL_DELIM, NULL }, /* Ic */ + { ARGSFL_DELIM, NULL }, /* In */ + { ARGSFL_DELIM, NULL }, /* Li */ + { ARGSFL_NONE, NULL }, /* Nd */ + { ARGSFL_DELIM, NULL }, /* Nm */ + { ARGSFL_DELIM, NULL }, /* Op */ + { ARGSFL_DELIM, NULL }, /* Ot */ + { ARGSFL_DELIM, NULL }, /* Pa */ + { ARGSFL_NONE, args_Ex }, /* Rv */ + { ARGSFL_DELIM, NULL }, /* St */ + { ARGSFL_DELIM, NULL }, /* Va */ + { ARGSFL_DELIM, NULL }, /* Vt */ + { ARGSFL_DELIM, NULL }, /* Xr */ + { ARGSFL_NONE, NULL }, /* %A */ + { ARGSFL_NONE, NULL }, /* %B */ + { ARGSFL_NONE, NULL }, /* %D */ + { ARGSFL_NONE, NULL }, /* %I */ + { ARGSFL_NONE, NULL }, /* %J */ + { ARGSFL_NONE, NULL }, /* %N */ + { ARGSFL_NONE, NULL }, /* %O */ + { ARGSFL_NONE, NULL }, /* %P */ + { ARGSFL_NONE, NULL }, /* %R */ + { ARGSFL_NONE, NULL }, /* %T */ + { ARGSFL_NONE, NULL }, /* %V */ + { ARGSFL_DELIM, NULL }, /* Ac */ + { ARGSFL_NONE, NULL }, /* Ao */ + { ARGSFL_DELIM, NULL }, /* Aq */ + { ARGSFL_DELIM, NULL }, /* At */ + { ARGSFL_DELIM, NULL }, /* Bc */ + { ARGSFL_NONE, args_Bf }, /* Bf */ + { ARGSFL_NONE, NULL }, /* Bo */ + { ARGSFL_DELIM, NULL }, /* Bq */ + { ARGSFL_DELIM, NULL }, /* Bsx */ + { ARGSFL_DELIM, NULL }, /* Bx */ + { ARGSFL_NONE, NULL }, /* Db */ + { ARGSFL_DELIM, NULL }, /* Dc */ + { ARGSFL_NONE, NULL }, /* Do */ + { ARGSFL_DELIM, NULL }, /* Dq */ + { ARGSFL_DELIM, NULL }, /* Ec */ + { ARGSFL_NONE, NULL }, /* Ef */ + { ARGSFL_DELIM, NULL }, /* Em */ + { ARGSFL_NONE, NULL }, /* Eo */ + { ARGSFL_DELIM, NULL }, /* Fx */ + { ARGSFL_DELIM, NULL }, /* Ms */ + { ARGSFL_DELIM, NULL }, /* No */ + { ARGSFL_DELIM, NULL }, /* Ns */ + { ARGSFL_DELIM, NULL }, /* Nx */ + { ARGSFL_DELIM, NULL }, /* Ox */ + { ARGSFL_DELIM, NULL }, /* Pc */ + { ARGSFL_DELIM, NULL }, /* Pf */ + { ARGSFL_NONE, NULL }, /* Po */ + { ARGSFL_DELIM, NULL }, /* Pq */ + { ARGSFL_DELIM, NULL }, /* Qc */ + { ARGSFL_DELIM, NULL }, /* Ql */ + { ARGSFL_NONE, NULL }, /* Qo */ + { ARGSFL_DELIM, NULL }, /* Qq */ + { ARGSFL_NONE, NULL }, /* Re */ + { ARGSFL_NONE, NULL }, /* Rs */ + { ARGSFL_DELIM, NULL }, /* Sc */ + { ARGSFL_NONE, NULL }, /* So */ + { ARGSFL_DELIM, NULL }, /* Sq */ + { ARGSFL_NONE, NULL }, /* Sm */ + { ARGSFL_DELIM, NULL }, /* Sx */ + { ARGSFL_DELIM, NULL }, /* Sy */ + { ARGSFL_DELIM, NULL }, /* Tn */ + { ARGSFL_DELIM, NULL }, /* Ux */ + { ARGSFL_DELIM, NULL }, /* Xc */ + { ARGSFL_NONE, NULL }, /* Xo */ + { ARGSFL_NONE, NULL }, /* Fo */ + { ARGSFL_DELIM, NULL }, /* Fc */ + { ARGSFL_NONE, NULL }, /* Oo */ + { ARGSFL_DELIM, NULL }, /* Oc */ + { ARGSFL_NONE, args_Bk }, /* Bk */ + { ARGSFL_NONE, NULL }, /* Ek */ + { ARGSFL_NONE, NULL }, /* Bt */ + { ARGSFL_NONE, NULL }, /* Hf */ + { ARGSFL_DELIM, NULL }, /* Fr */ + { ARGSFL_NONE, NULL }, /* Ud */ + { ARGSFL_DELIM, NULL }, /* Lb */ + { ARGSFL_NONE, NULL }, /* Lp */ + { ARGSFL_DELIM, NULL }, /* Lk */ + { ARGSFL_DELIM, NULL }, /* Mt */ + { ARGSFL_DELIM, NULL }, /* Brq */ + { ARGSFL_NONE, NULL }, /* Bro */ + { ARGSFL_DELIM, NULL }, /* Brc */ + { ARGSFL_NONE, NULL }, /* %C */ + { ARGSFL_NONE, NULL }, /* Es */ + { ARGSFL_DELIM, NULL }, /* En */ + { ARGSFL_DELIM, NULL }, /* Dx */ + { ARGSFL_NONE, NULL }, /* %Q */ + { ARGSFL_NONE, NULL }, /* %U */ + { ARGSFL_NONE, NULL }, /* Ta */ +}; + + /* - * Parse an argument from line text. This comes in the form of -key - * [value0...], which may either have a single mandatory value, at least - * one mandatory value, an optional single value, or no value. + * Parse flags and their arguments from the input line. + * These come in the form -flag [argument ...]. + * Some flags take no argument, some one, some multiple. */ -int -mdoc_argv(struct mdoc *m, int line, int tok, - struct mdoc_arg **v, int *pos, char *buf) +void +mdoc_argv(struct roff_man *mdoc, int line, enum roff_tok tok, + struct mdoc_arg **reta, int *pos, char *buf) { - char *p, sv; - struct mdoc_argv tmp; - struct mdoc_arg *arg; + struct mdoc_argv tmpv; + struct mdoc_argv **retv; + const enum mdocargt *argtable; + char *argname; + int ipos, retc; + char savechar; - if (0 == buf[*pos]) - return(ARGV_EOLN); + *reta = NULL; - assert(' ' != buf[*pos]); + /* Which flags does this macro support? */ - /* Parse through to the first unescaped space. */ + assert(tok >= MDOC_Dd && tok < MDOC_MAX); + argtable = mdocargs[tok - MDOC_Dd].argvs; + if (argtable == NULL) + return; - p = &buf[++(*pos)]; + /* Loop over the flags on the input line. */ - assert(*pos > 0); + ipos = *pos; + while (buf[ipos] == '-') { - /* LINTED */ - while (buf[*pos]) { - if (' ' == buf[*pos]) - if ('\\' != buf[*pos - 1]) + /* Seek to the first unescaped space. */ + + for (argname = buf + ++ipos; buf[ipos] != '\0'; ipos++) + if (buf[ipos] == ' ' && buf[ipos - 1] != '\\') break; - (*pos)++; - } - /* XXX - save zeroed byte, if not an argument. */ + /* + * We want to nil-terminate the word to look it up. + * But we may not have a flag, in which case we need + * to restore the line as-is. So keep around the + * stray byte, which we'll reset upon exiting. + */ - sv = 0; - if (buf[*pos]) { - sv = buf[*pos]; - buf[(*pos)++] = 0; - } + if ((savechar = buf[ipos]) != '\0') + buf[ipos++] = '\0'; - (void)memset(&tmp, 0, sizeof(struct mdoc_argv)); - tmp.line = line; - tmp.pos = *pos; + /* + * Now look up the word as a flag. Use temporary + * storage that we'll copy into the node's flags. + */ - /* See if our token accepts the argument. */ + while ((tmpv.arg = *argtable++) != MDOC_ARG_MAX) + if ( ! strcmp(argname, mdoc_argnames[tmpv.arg])) + break; - if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) { - /* XXX - restore saved zeroed byte. */ - if (sv) - buf[*pos - 1] = sv; - return(ARGV_WORD); - } + /* If it isn't a flag, restore the saved byte. */ - while (buf[*pos] && ' ' == buf[*pos]) - (*pos)++; + if (tmpv.arg == MDOC_ARG_MAX) { + if (savechar != '\0') + buf[ipos - 1] = savechar; + break; + } - if ( ! argv(m, line, &tmp, pos, buf)) - return(ARGV_ERROR); + /* Read to the next word (the first argument). */ - if (NULL == (arg = *v)) { - *v = calloc(1, sizeof(struct mdoc_arg)); - if (NULL == *v) { - (void)mdoc_nerr(m, m->last, EMALLOC); - return(ARGV_ERROR); + while (buf[ipos] == ' ') + ipos++; + + /* Parse the arguments of the flag. */ + + tmpv.line = line; + tmpv.pos = *pos; + tmpv.sz = 0; + tmpv.value = NULL; + + switch (argvflags[tmpv.arg]) { + case ARGV_SINGLE: + argv_single(mdoc, line, &tmpv, &ipos, buf); + break; + case ARGV_MULTI: + argv_multi(mdoc, line, &tmpv, &ipos, buf); + break; + case ARGV_NONE: + break; } - arg = *v; - } - arg->argc++; - arg->argv = realloc(arg->argv, arg->argc * - sizeof(struct mdoc_argv)); + /* Append to the return values. */ - if (NULL == arg->argv) { - (void)mdoc_nerr(m, m->last, EMALLOC); - return(ARGV_ERROR); - } + if (*reta == NULL) + *reta = mandoc_calloc(1, sizeof(**reta)); - (void)memcpy(&arg->argv[(int)arg->argc - 1], - &tmp, sizeof(struct mdoc_argv)); + retc = ++(*reta)->argc; + retv = &(*reta)->argv; + *retv = mandoc_reallocarray(*retv, retc, sizeof(**retv)); + memcpy(*retv + retc - 1, &tmpv, sizeof(**retv)); - return(ARGV_ARG); + /* Prepare for parsing the next flag. */ + + *pos = ipos; + argtable = mdocargs[tok - MDOC_Dd].argvs; + } } - void mdoc_argv_free(struct mdoc_arg *p) { - int i, j; + int i; if (NULL == p) return; @@ -310,439 +386,290 @@ mdoc_argv_free(struct mdoc_arg *p) } assert(p->argc); - /* LINTED */ - for (i = 0; i < (int)p->argc; i++) { - if (0 == p->argv[i].sz) - continue; - /* LINTED */ - for (j = 0; j < (int)p->argv[i].sz; j++) - free(p->argv[i].value[j]); + for (i = (int)p->argc - 1; i >= 0; i--) + argn_free(p, i); - free(p->argv[i].value); - } - free(p->argv); free(p); } - -int -mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v) +static void +argn_free(struct mdoc_arg *p, int iarg) { + struct mdoc_argv *arg; + int j; - return(args(m, line, pos, buf, 0, v)); -} + arg = &p->argv[iarg]; + if (arg->sz && arg->value) { + for (j = (int)arg->sz - 1; j >= 0; j--) + free(arg->value[j]); + free(arg->value); + } -int -mdoc_args(struct mdoc *m, int line, - int *pos, char *buf, int tok, char **v) + for (--p->argc; iarg < (int)p->argc; iarg++) + p->argv[iarg] = p->argv[iarg+1]; +} + +enum margserr +mdoc_args(struct roff_man *mdoc, int line, int *pos, + char *buf, enum roff_tok tok, char **v) { - int fl, c, i; - struct mdoc_node *n; + struct roff_node *n; + char *v_local; + enum argsflag fl; - fl = (0 == tok) ? 0 : mdoc_argflags[tok]; + if (v == NULL) + v = &v_local; + fl = tok == TOKEN_NONE ? ARGSFL_NONE : mdocargs[tok - MDOC_Dd].flags; - if (MDOC_It != tok) - return(args(m, line, pos, buf, fl, v)); - - /* - * The `It' macro is a special case, as it acquires parameters from its - * parent `Bl' context, specifically, we're concerned with -column. + /* + * We know that we're in an `It', so it's reasonable to expect + * us to be sitting in a `Bl'. Someday this may not be the case + * (if we allow random `It's sitting out there), so provide a + * safe fall-back into the default behaviour. */ - for (n = m->last; n; n = n->parent) - if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok) + if (tok == MDOC_It) { + for (n = mdoc->last; n != NULL; n = n->parent) { + if (n->tok != MDOC_Bl) + continue; + if (n->norm->Bl.type == LIST_column) + fl = ARGSFL_TABSEP; break; - - assert(n); - c = (int)(n->args ? n->args->argc : 0); - assert(c > 0); - - /* LINTED */ - for (i = 0; i < c; i++) { - if (MDOC_Column != n->args->argv[i].arg) - continue; - fl |= ARGS_TABSEP; - fl &= ~ARGS_DELIM; - break; + } } - return(args(m, line, pos, buf, fl, v)); + return args(mdoc, line, pos, buf, fl, v); } - -static int -args(struct mdoc *m, int line, int *pos, - char *buf, int fl, char **v) +static enum margserr +args(struct roff_man *mdoc, int line, int *pos, + char *buf, enum argsflag fl, char **v) { - int i, psv; - char *p, *pp; + char *p; + int pairs; - assert(*pos); - assert(' ' != buf[*pos]); - - if (0 == buf[*pos]) - return(ARGS_EOLN); - - /* - * If the first character is a delimiter and we're to look for - * delimited strings, then pass down the buffer seeing if it - * follows the pattern of [[::delim::][ ]+]+. - */ - - if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) { - for (i = *pos; buf[i]; ) { - if ( ! mdoc_iscdelim(buf[i])) - break; - i++; - if (0 == buf[i] || ' ' != buf[i]) - break; - i++; - while (buf[i] && ' ' == buf[i]) - i++; + if (buf[*pos] == '\0') { + if (mdoc->flags & MDOC_PHRASELIT && + ! (mdoc->flags & MDOC_PHRASE)) { + mandoc_msg(MANDOCERR_ARG_QUOTE, line, *pos, NULL); + mdoc->flags &= ~MDOC_PHRASELIT; } - - /* FIXME: warn about trailing whitespace. */ - - if (0 == buf[i]) { - *v = &buf[*pos]; - return(ARGS_PUNCT); - } + return ARGS_EOLN; } - *v = &buf[*pos]; + *v = buf + *pos; + if (fl == ARGSFL_DELIM && args_checkpunct(buf, *pos)) + return ARGS_PUNCT; + /* - * First handle TABSEP items, restricted to `Bl -column'. This - * ignores conventional token parsing and instead uses tabs or - * `Ta' macros to separate phrases. Phrases are parsed again - * for arguments at a later phase. + * Tabs in `It' lines in `Bl -column' can't be escaped. + * Phrases are reparsed for `Ta' and other macros later. */ - if (ARGS_TABSEP & fl) { - psv = *pos; + if (fl == ARGSFL_TABSEP) { + if ((p = strchr(*v, '\t')) != NULL) { - /* Scan ahead to tab (can't be escaped). */ - p = strchr(*v, '\t'); + /* + * Words right before and right after + * tab characters are not parsed, + * unless there is a blank in between. + */ - /* Scan ahead to unescaped `Ta'. */ - for (pp = *v; ; pp++) { - if (NULL == (pp = strstr(pp, "Ta"))) - break; - if (pp > *v && ' ' != *(pp - 1)) - continue; - if (' ' == *(pp + 2) || 0 == *(pp + 2)) - break; - } + if (p > buf && p[-1] != ' ') + mdoc->flags |= MDOC_PHRASEQL; + if (p[1] != ' ') + mdoc->flags |= MDOC_PHRASEQN; - if (p && pp) { - *pos += pp < p ? 2 : 1; - p = pp < p ? pp : p; - } else if (p && ! pp) { - *pos += 1; - } else if (pp && ! p) { - p = pp; - *pos += 2; - } else - p = strchr(*v, 0); + /* + * One or more blanks after a tab cause + * one leading blank in the next column. + * So skip all but one of them. + */ - if (0 == *p && ' ' == *(p - 1)) - if ( ! mdoc_pwarn(m, line, *pos, ETAILWS)) - return(ARGS_ERROR); + *pos += (int)(p - *v) + 1; + while (buf[*pos] == ' ' && buf[*pos + 1] == ' ') + (*pos)++; - *p = 0; - *pos += (int)(p - *v); + /* + * A tab at the end of an input line + * switches to the next column. + */ - /* Strip delimiter's preceding whitespace. */ - - pp = p - 1; - while (pp > *v && ' ' == *pp) { - if (pp > *v && '\\' == *(pp - 1)) - break; - pp--; + if (buf[*pos] == '\0' || buf[*pos + 1] == '\0') + mdoc->flags |= MDOC_PHRASEQN; + } else { + p = strchr(*v, '\0'); + if (p[-1] == ' ') + mandoc_msg(MANDOCERR_SPACE_EOL, + line, *pos, NULL); + *pos += (int)(p - *v); } - *(pp + 1) = 0; - /* Strip delimiter's proceeding whitespace. */ + /* Skip any trailing blank characters. */ + while (p > *v && p[-1] == ' ' && + (p - 1 == *v || p[-2] != '\\')) + p--; + *p = '\0'; - for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++) - /* Skip ahead. */ ; + return ARGS_PHRASE; + } - return(ARGS_PHRASE); - } - - /* + /* * Process a quoted literal. A quote begins with a double-quote * and ends with a double-quote NOT preceded by a double-quote. + * NUL-terminate the literal in place. + * Collapse pairs of quotes inside quoted literals. * Whitespace is NOT involved in literal termination. */ - if ('\"' == buf[*pos]) { - *v = &buf[++(*pos)]; + if (mdoc->flags & MDOC_PHRASELIT || buf[*pos] == '\"') { + if ( ! (mdoc->flags & MDOC_PHRASELIT)) + *v = &buf[++(*pos)]; + if (mdoc->flags & MDOC_PHRASE) + mdoc->flags |= MDOC_PHRASELIT; + + pairs = 0; for ( ; buf[*pos]; (*pos)++) { + /* Move following text left after quoted quotes. */ + if (pairs) + buf[*pos - pairs] = buf[*pos]; if ('\"' != buf[*pos]) continue; + /* Unquoted quotes end quoted args. */ if ('\"' != buf[*pos + 1]) break; + /* Quoted quotes collapse. */ + pairs++; (*pos)++; } + if (pairs) + buf[*pos - pairs] = '\0'; - if (0 == buf[*pos]) { - if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM)) - return(ARGS_ERROR); - return(ARGS_QWORD); + if (buf[*pos] == '\0') { + if ( ! (mdoc->flags & MDOC_PHRASE)) + mandoc_msg(MANDOCERR_ARG_QUOTE, + line, *pos, NULL); + return ARGS_WORD; } - buf[(*pos)++] = 0; + mdoc->flags &= ~MDOC_PHRASELIT; + buf[(*pos)++] = '\0'; - if (0 == buf[*pos]) - return(ARGS_QWORD); + if ('\0' == buf[*pos]) + return ARGS_WORD; while (' ' == buf[*pos]) (*pos)++; - if (0 == buf[*pos]) - if ( ! mdoc_pwarn(m, line, *pos, ETAILWS)) - return(ARGS_ERROR); + if ('\0' == buf[*pos]) + mandoc_msg(MANDOCERR_SPACE_EOL, line, *pos, NULL); - return(ARGS_QWORD); + return ARGS_WORD; } - /* - * A non-quoted term progresses until either the end of line or - * a non-escaped whitespace. + p = &buf[*pos]; + *v = mandoc_getarg(mdoc->parse, &p, line, pos); + + /* + * After parsing the last word in this phrase, + * tell lookup() whether or not to interpret it. */ - for ( ; buf[*pos]; (*pos)++) - if (' ' == buf[*pos] && '\\' != buf[*pos - 1]) - break; + if (*p == '\0' && mdoc->flags & MDOC_PHRASEQL) { + mdoc->flags &= ~MDOC_PHRASEQL; + mdoc->flags |= MDOC_PHRASEQF; + } + return ARGS_WORD; +} - if (0 == buf[*pos]) - return(ARGS_WORD); +/* + * Check if the string consists only of space-separated closing + * delimiters. This is a bit of a dance: the first must be a close + * delimiter, but it may be followed by middle delimiters. Arbitrary + * whitespace may separate these tokens. + */ +static int +args_checkpunct(const char *buf, int i) +{ + int j; + char dbuf[DELIMSZ]; + enum mdelim d; - buf[(*pos)++] = 0; + /* First token must be a close-delimiter. */ - while (' ' == buf[*pos]) - (*pos)++; + for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++) + dbuf[j] = buf[i]; - if (0 == buf[*pos]) - if ( ! mdoc_pwarn(m, line, *pos, ETAILWS)) - return(ARGS_ERROR); + if (DELIMSZ == j) + return 0; - return(ARGS_WORD); -} + dbuf[j] = '\0'; + if (DELIM_CLOSE != mdoc_isdelim(dbuf)) + return 0; + while (' ' == buf[i]) + i++; -static int -argv_a2arg(int tok, const char *argv) -{ + /* Remaining must NOT be open/none. */ - /* - * Parse an argument identifier from its text. XXX - this - * should really be table-driven to clarify the code. - * - * If you add an argument to the list, make sure that you - * register it here with its one or more macros! - */ + while (buf[i]) { + j = 0; + while (buf[i] && ' ' != buf[i] && j < DELIMSZ) + dbuf[j++] = buf[i++]; - switch (tok) { - case (MDOC_An): - if (0 == strcmp(argv, "split")) - return(MDOC_Split); - else if (0 == strcmp(argv, "nosplit")) - return(MDOC_Nosplit); - break; + if (DELIMSZ == j) + return 0; - case (MDOC_Bd): - if (0 == strcmp(argv, "ragged")) - return(MDOC_Ragged); - else if (0 == strcmp(argv, "unfilled")) - return(MDOC_Unfilled); - else if (0 == strcmp(argv, "filled")) - return(MDOC_Filled); - else if (0 == strcmp(argv, "literal")) - return(MDOC_Literal); - else if (0 == strcmp(argv, "file")) - return(MDOC_File); - else if (0 == strcmp(argv, "offset")) - return(MDOC_Offset); - else if (0 == strcmp(argv, "compact")) - return(MDOC_Compact); - break; + dbuf[j] = '\0'; + d = mdoc_isdelim(dbuf); + if (DELIM_NONE == d || DELIM_OPEN == d) + return 0; - case (MDOC_Bf): - if (0 == strcmp(argv, "emphasis")) - return(MDOC_Emphasis); - else if (0 == strcmp(argv, "literal")) - return(MDOC_Literal); - else if (0 == strcmp(argv, "symbolic")) - return(MDOC_Symbolic); - break; - - case (MDOC_Bk): - if (0 == strcmp(argv, "words")) - return(MDOC_Words); - break; - - case (MDOC_Bl): - if (0 == strcmp(argv, "bullet")) - return(MDOC_Bullet); - else if (0 == strcmp(argv, "dash")) - return(MDOC_Dash); - else if (0 == strcmp(argv, "hyphen")) - return(MDOC_Hyphen); - else if (0 == strcmp(argv, "item")) - return(MDOC_Item); - else if (0 == strcmp(argv, "enum")) - return(MDOC_Enum); - else if (0 == strcmp(argv, "tag")) - return(MDOC_Tag); - else if (0 == strcmp(argv, "diag")) - return(MDOC_Diag); - else if (0 == strcmp(argv, "hang")) - return(MDOC_Hang); - else if (0 == strcmp(argv, "ohang")) - return(MDOC_Ohang); - else if (0 == strcmp(argv, "inset")) - return(MDOC_Inset); - else if (0 == strcmp(argv, "column")) - return(MDOC_Column); - else if (0 == strcmp(argv, "width")) - return(MDOC_Width); - else if (0 == strcmp(argv, "offset")) - return(MDOC_Offset); - else if (0 == strcmp(argv, "compact")) - return(MDOC_Compact); - else if (0 == strcmp(argv, "nested")) - return(MDOC_Nested); - break; - - case (MDOC_Rv): - /* FALLTHROUGH */ - case (MDOC_Ex): - if (0 == strcmp(argv, "std")) - return(MDOC_Std); - break; - default: - break; + while (' ' == buf[i]) + i++; } - return(MDOC_ARG_MAX); + return '\0' == buf[i]; } - -static int -argv_multi(struct mdoc *m, int line, +static void +argv_multi(struct roff_man *mdoc, int line, struct mdoc_argv *v, int *pos, char *buf) { - int c; + enum margserr ac; char *p; for (v->sz = 0; ; v->sz++) { - if ('-' == buf[*pos]) + if (buf[*pos] == '-') break; - c = args(m, line, pos, buf, 0, &p); - if (ARGS_ERROR == c) - return(0); - else if (ARGS_EOLN == c) + ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p); + if (ac == ARGS_EOLN) break; - if (0 == v->sz % MULTI_STEP) { - v->value = realloc(v->value, - (v->sz + MULTI_STEP) * sizeof(char *)); - if (NULL == v->value) { - (void)mdoc_nerr(m, m->last, EMALLOC); - return(ARGV_ERROR); - } - } - if (NULL == (v->value[(int)v->sz] = strdup(p))) - return(mdoc_nerr(m, m->last, EMALLOC)); - } + if (v->sz % MULTI_STEP == 0) + v->value = mandoc_reallocarray(v->value, + v->sz + MULTI_STEP, sizeof(char *)); - return(1); + v->value[(int)v->sz] = mandoc_strdup(p); + } } - -static int -argv_opt_single(struct mdoc *m, int line, +static void +argv_single(struct roff_man *mdoc, int line, struct mdoc_argv *v, int *pos, char *buf) { - int c; + enum margserr ac; char *p; - if ('-' == buf[*pos]) - return(1); + ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p); + if (ac == ARGS_EOLN) + return; - c = args(m, line, pos, buf, 0, &p); - if (ARGS_ERROR == c) - return(0); - if (ARGS_EOLN == c) - return(1); - v->sz = 1; - if (NULL == (v->value = calloc(1, sizeof(char *)))) - return(mdoc_nerr(m, m->last, EMALLOC)); - if (NULL == (v->value[0] = strdup(p))) - return(mdoc_nerr(m, m->last, EMALLOC)); - - return(1); -} - - -/* - * Parse a single, mandatory value from the stream. - */ -static int -argv_single(struct mdoc *m, int line, - struct mdoc_argv *v, int *pos, char *buf) -{ - int c, ppos; - char *p; - - ppos = *pos; - - c = args(m, line, pos, buf, 0, &p); - if (ARGS_ERROR == c) - return(0); - if (ARGS_EOLN == c) - return(mdoc_perr(m, line, ppos, EARGVAL)); - - v->sz = 1; - if (NULL == (v->value = calloc(1, sizeof(char *)))) - return(mdoc_nerr(m, m->last, EMALLOC)); - if (NULL == (v->value[0] = strdup(p))) - return(mdoc_nerr(m, m->last, EMALLOC)); - - return(1); -} - - -/* - * Determine rules for parsing arguments. Arguments can either accept - * no parameters, an optional single parameter, one parameter, or - * multiple parameters. - */ -static int -argv(struct mdoc *mdoc, int line, - struct mdoc_argv *v, int *pos, char *buf) -{ - - v->sz = 0; - v->value = NULL; - - switch (mdoc_argvflags[v->arg]) { - case (ARGV_SINGLE): - return(argv_single(mdoc, line, v, pos, buf)); - case (ARGV_MULTI): - return(argv_multi(mdoc, line, v, pos, buf)); - case (ARGV_OPT_SINGLE): - return(argv_opt_single(mdoc, line, v, pos, buf)); - default: - /* ARGV_NONE */ - break; - } - - return(1); + v->value = mandoc_malloc(sizeof(char *)); + v->value[0] = mandoc_strdup(p); }