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authorKristaps Dzonsons <kristaps@bsd.lv>2009-03-27 15:00:15 +0000
committerKristaps Dzonsons <kristaps@bsd.lv>2009-03-27 15:00:15 +0000
commit4bb00625e60fdd915e9674a4a99115029592b4f0 (patch)
treea7dfacb95e08b28ea2aec01145e080586b9a3af2 /mdoc_argv.c
parent32d2f8ef0a63207c0421436789004f4d92ec44c5 (diff)
downloadmandoc-4bb00625e60fdd915e9674a4a99115029592b4f0.tar.gz
Version. Added forgotten file.
Diffstat (limited to 'mdoc_argv.c')
-rw-r--r--mdoc_argv.c857
1 files changed, 857 insertions, 0 deletions
diff --git a/mdoc_argv.c b/mdoc_argv.c
new file mode 100644
index 00000000..6d0c9c33
--- /dev/null
+++ b/mdoc_argv.c
@@ -0,0 +1,857 @@
+/* $Id$ */
+/*
+ * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
+ *
+ * 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 <sys/types.h>
+
+#include <assert.h>
+#include <ctype.h>
+#include <err.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.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 ARGS_QUOTED (1 << 0)
+#define ARGS_DELIM (1 << 1)
+#define ARGS_TABSEP (1 << 2)
+#define ARGS_ARGVLIKE (1 << 3)
+
+#define ARGV_NONE (1 << 0)
+#define ARGV_SINGLE (1 << 1)
+#define ARGV_MULTI (1 << 2)
+#define ARGV_OPT_SINGLE (1 << 3)
+
+#define MULTI_STEP 5
+
+enum mwarn {
+ WQUOTPARM,
+ WARGVPARM,
+ WCOLEMPTY,
+ WTAILWS
+};
+
+enum merr {
+ EQUOTTERM,
+ EARGVAL
+};
+
+static int argv_a2arg(int, const char *);
+static int args(struct mdoc *, int, int *,
+ char *, int, char **);
+static int argv(struct mdoc *, int,
+ struct mdoc_argv *, int *, char *);
+static int argv_single(struct mdoc *, 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 *);
+static int pwarn(struct mdoc *, int, int, enum mwarn);
+static int perr(struct mdoc *, int, int, enum merr);
+
+/* Per-argument flags. */
+
+static int mdoc_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_Offset */
+ ARGV_NONE, /* MDOC_Bullet */
+ ARGV_NONE, /* MDOC_Dash */
+ ARGV_NONE, /* MDOC_Hyphen */
+ ARGV_NONE, /* MDOC_Item */
+ ARGV_NONE, /* MDOC_Enum */
+ ARGV_NONE, /* MDOC_Tag */
+ ARGV_NONE, /* MDOC_Diag */
+ ARGV_NONE, /* MDOC_Hang */
+ ARGV_NONE, /* MDOC_Ohang */
+ ARGV_NONE, /* MDOC_Inset */
+ ARGV_MULTI, /* MDOC_Column */
+ ARGV_SINGLE, /* MDOC_Width */
+ ARGV_NONE, /* MDOC_Compact */
+ ARGV_OPT_SINGLE, /* MDOC_Std */
+ ARGV_NONE, /* MDOC_Filled */
+ ARGV_NONE, /* MDOC_Words */
+ ARGV_NONE, /* MDOC_Emphasis */
+ ARGV_NONE, /* MDOC_Symbolic */
+ ARGV_NONE /* MDOC_Symbolic */
+};
+
+static int mdoc_argflags[MDOC_MAX] = {
+ 0, /* \" */
+ 0, /* Dd */
+ 0, /* Dt */
+ 0, /* Os */
+ ARGS_QUOTED, /* Sh */
+ ARGS_QUOTED, /* Ss */
+ ARGS_DELIM, /* Pp */
+ ARGS_DELIM, /* D1 */
+ ARGS_DELIM | ARGS_QUOTED, /* Dl */
+ 0, /* Bd */
+ 0, /* Ed */
+ 0, /* Bl */
+ 0, /* El */
+ 0, /* It */
+ ARGS_DELIM, /* Ad */
+ ARGS_DELIM, /* An */
+ ARGS_DELIM | ARGS_QUOTED, /* Ar */
+ ARGS_QUOTED, /* Cd */
+ ARGS_DELIM, /* Cm */
+ ARGS_DELIM, /* Dv */
+ ARGS_DELIM, /* Er */
+ ARGS_DELIM, /* Ev */
+ 0, /* Ex */
+ ARGS_DELIM | ARGS_QUOTED, /* Fa */
+ 0, /* Fd */
+ ARGS_DELIM, /* Fl */
+ ARGS_DELIM | ARGS_QUOTED, /* Fn */
+ ARGS_DELIM | ARGS_QUOTED, /* Ft */
+ ARGS_DELIM, /* Ic */
+ 0, /* In */
+ ARGS_DELIM | ARGS_QUOTED, /* Li */
+ ARGS_QUOTED, /* Nd */
+ ARGS_DELIM, /* Nm */
+ ARGS_DELIM, /* Op */
+ 0, /* Ot */
+ ARGS_DELIM, /* Pa */
+ 0, /* Rv */
+ ARGS_DELIM | ARGS_ARGVLIKE, /* St */
+ ARGS_DELIM, /* Va */
+ ARGS_DELIM, /* Vt */
+ ARGS_DELIM, /* Xr */
+ ARGS_QUOTED, /* %A */
+ ARGS_QUOTED, /* %B */
+ ARGS_QUOTED, /* %D */
+ ARGS_QUOTED, /* %I */
+ ARGS_QUOTED, /* %J */
+ ARGS_QUOTED, /* %N */
+ ARGS_QUOTED, /* %O */
+ ARGS_QUOTED, /* %P */
+ ARGS_QUOTED, /* %R */
+ ARGS_QUOTED, /* %T */
+ ARGS_QUOTED, /* %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 | ARGS_QUOTED, /* Sy */
+ ARGS_DELIM, /* Tn */
+ ARGS_DELIM, /* Ux */
+ ARGS_DELIM, /* Xc */
+ 0, /* Xo */
+ ARGS_QUOTED, /* Fo */
+ 0, /* Fc */
+ 0, /* Oo */
+ ARGS_DELIM, /* Oc */
+ 0, /* Bk */
+ 0, /* Ek */
+ 0, /* Bt */
+ 0, /* Hf */
+ 0, /* Fr */
+ 0, /* Ud */
+ 0, /* Lb */
+ 0, /* Ap */
+ ARGS_DELIM, /* Lp */
+ ARGS_DELIM | ARGS_QUOTED, /* Lk */
+ ARGS_DELIM | ARGS_QUOTED, /* Mt */
+ ARGS_DELIM, /* Brq */
+ 0, /* Bro */
+ ARGS_DELIM, /* Brc */
+ ARGS_QUOTED, /* %C */
+ 0, /* Es */
+ 0, /* En */
+ 0, /* Dx */
+ ARGS_QUOTED, /* %Q */
+};
+
+
+/*
+ * 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.
+ */
+int
+mdoc_argv(struct mdoc *mdoc, int line, int tok,
+ struct mdoc_arg **v, int *pos, char *buf)
+{
+ int i;
+ char *p, sv;
+ struct mdoc_argv tmp;
+ struct mdoc_arg *arg;
+
+ if (0 == buf[*pos])
+ return(ARGV_EOLN);
+
+ assert(' ' != buf[*pos]);
+
+ if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
+ return(ARGV_WORD);
+
+ /* Parse through to the first unescaped space. */
+
+ i = *pos;
+ p = &buf[++(*pos)];
+
+ assert(*pos > 0);
+
+ /* LINTED */
+ while (buf[*pos]) {
+ if (' ' == buf[*pos])
+ if ('\\' != buf[*pos - 1])
+ break;
+ (*pos)++;
+ }
+
+ /* XXX - save zeroed byte, if not an argument. */
+
+ sv = 0;
+ if (buf[*pos]) {
+ sv = buf[*pos];
+ buf[(*pos)++] = 0;
+ }
+
+ (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
+ tmp.line = line;
+ tmp.pos = *pos;
+
+ /* See if our token accepts the argument. */
+
+ if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
+ /* XXX - restore saved zeroed byte. */
+ if (sv)
+ buf[*pos - 1] = sv;
+ if ( ! pwarn(mdoc, line, i, WARGVPARM))
+ return(ARGV_ERROR);
+ return(ARGV_WORD);
+ }
+
+ while (buf[*pos] && ' ' == buf[*pos])
+ (*pos)++;
+
+ if ( ! argv(mdoc, line, &tmp, pos, buf))
+ return(ARGV_ERROR);
+
+ if (NULL == (arg = *v)) {
+ if (NULL == (*v = calloc(1, sizeof(struct mdoc_arg))))
+ err(1, "calloc");
+ arg = *v;
+ }
+
+ arg->argc++;
+ arg->argv = xrealloc(arg->argv, arg->argc *
+ sizeof(struct mdoc_argv));
+
+ (void)memcpy(&arg->argv[(int)arg->argc - 1],
+ &tmp, sizeof(struct mdoc_argv));
+
+ return(ARGV_ARG);
+}
+
+
+void
+mdoc_argv_free(struct mdoc_arg *p)
+{
+ int i, j;
+
+ if (NULL == p)
+ return;
+
+ if (p->refcnt) {
+ --(p->refcnt);
+ if (p->refcnt)
+ return;
+ }
+
+ 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]);
+
+ free(p->argv[i].value);
+ }
+
+ free(p->argv);
+ free(p);
+}
+
+
+
+static int
+perr(struct mdoc *mdoc, int line, int pos, enum merr code)
+{
+ char *p;
+
+ p = NULL;
+
+ switch (code) {
+ case (EQUOTTERM):
+ p = "unterminated quoted parameter";
+ break;
+ case (EARGVAL):
+ p = "argument requires a value";
+ break;
+ }
+
+ assert(p);
+ return(mdoc_perr(mdoc, line, pos, p));
+}
+
+
+static int
+pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
+{
+ char *p;
+ int c;
+
+ p = NULL;
+ c = WARN_SYNTAX;
+
+ switch (code) {
+ case (WQUOTPARM):
+ p = "unexpected quoted parameter";
+ break;
+ case (WARGVPARM):
+ p = "argument-like parameter";
+ break;
+ case (WCOLEMPTY):
+ p = "last list column is empty";
+ c = WARN_COMPAT;
+ break;
+ case (WTAILWS):
+ p = "trailing whitespace";
+ c = WARN_COMPAT;
+ break;
+ }
+
+ assert(p);
+ return(mdoc_pwarn(mdoc, line, pos, c, p));
+}
+
+
+int
+mdoc_args(struct mdoc *mdoc, int line,
+ int *pos, char *buf, int tok, char **v)
+{
+ int fl, c, i;
+ struct mdoc_node *n;
+
+ fl = (0 == tok) ? 0 : mdoc_argflags[tok];
+
+ /*
+ * Override per-macro argument flags with context-specific ones.
+ * As of now, this is only valid for `It' depending on its list
+ * context.
+ */
+
+ switch (tok) {
+ case (MDOC_It):
+ for (n = mdoc->last; n; n = n->parent)
+ if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
+ break;
+
+ assert(n);
+ c = (int)(n->args ? n->args->argc : 0);
+ assert(c > 0);
+
+ /*
+ * Using `Bl -column' adds ARGS_TABSEP to the arguments
+ * and invalidates ARGS_DELIM. Using `Bl -diag' allows
+ * for quoted arguments.
+ */
+
+ /* LINTED */
+ for (i = 0; i < c; i++) {
+ switch (n->args->argv[i].arg) {
+ case (MDOC_Column):
+ fl |= ARGS_TABSEP;
+ fl &= ~ARGS_DELIM;
+ i = c;
+ break;
+ case (MDOC_Diag):
+ fl |= ARGS_QUOTED;
+ i = c;
+ break;
+ default:
+ break;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ return(args(mdoc, line, pos, buf, fl, v));
+}
+
+
+static int
+args(struct mdoc *mdoc, int line,
+ int *pos, char *buf, int fl, char **v)
+{
+ int i;
+ char *p, *pp;
+
+ assert(*pos > 0);
+
+ if (0 == buf[*pos])
+ return(ARGS_EOLN);
+
+ if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
+ if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
+ return(ARGS_ERROR);
+
+ if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
+ if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
+ return(ARGS_ERROR);
+
+ /*
+ * 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++;
+ /* There must be at least one space... */
+ if (0 == buf[i] || ' ' != buf[i])
+ break;
+ i++;
+ while (buf[i] && ' ' == buf[i])
+ i++;
+ }
+ if (0 == buf[i]) {
+ *v = &buf[*pos];
+ return(ARGS_PUNCT);
+ }
+ }
+
+ /* First parse non-quoted strings. */
+
+ if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
+ *v = &buf[*pos];
+
+ /*
+ * Thar be dragons here! If we're tab-separated, search
+ * ahead for either a tab or the `Ta' macro.
+ * If a `Ta' is detected, it must be space-buffered before and
+ * after. If either of these hold true, then prune out the
+ * extra spaces and call it an argument.
+ */
+
+ if (ARGS_TABSEP & fl) {
+ /* Scan ahead to unescaped tab. */
+
+ p = strchr(*v, '\t');
+
+ /* 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;
+ }
+
+ /* Choose delimiter tab/Ta. */
+
+ if (p && pp)
+ p = (p < pp ? p : pp);
+ else if ( ! p && pp)
+ p = pp;
+
+ /* Strip delimiter's preceding whitespace. */
+
+ if (p && p > *v) {
+ pp = p - 1;
+ while (pp > *v && ' ' == *pp)
+ pp--;
+ if (pp == *v && ' ' == *pp)
+ *pp = 0;
+ else if (' ' == *pp)
+ *(pp + 1) = 0;
+ }
+
+ /* ...in- and proceding whitespace. */
+
+ if (p && ('\t' != *p)) {
+ *p++ = 0;
+ *p++ = 0;
+ } else if (p)
+ *p++ = 0;
+
+ if (p) {
+ while (' ' == *p)
+ p++;
+ if (0 != *p)
+ *(p - 1) = 0;
+ *pos += (int)(p - *v);
+ }
+
+ if (p && 0 == *p)
+ if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
+ return(0);
+ if (p && 0 == *p && p > *v && ' ' == *(p - 1))
+ if ( ! pwarn(mdoc, line, *pos, WTAILWS))
+ return(0);
+
+ if (p)
+ return(ARGS_PHRASE);
+
+ /* Configure the eoln case, too. */
+
+ p = strchr(*v, 0);
+ assert(p);
+
+ if (p > *v && ' ' == *(p - 1))
+ if ( ! pwarn(mdoc, line, *pos, WTAILWS))
+ return(0);
+ *pos += (int)(p - *v);
+
+ return(ARGS_PHRASE);
+ }
+
+ /* Do non-tabsep look-ahead here. */
+
+ if ( ! (ARGS_TABSEP & fl))
+ while (buf[*pos]) {
+ if (' ' == buf[*pos])
+ if ('\\' != buf[*pos - 1])
+ break;
+ (*pos)++;
+ }
+
+ if (0 == buf[*pos])
+ return(ARGS_WORD);
+
+ buf[(*pos)++] = 0;
+
+ if (0 == buf[*pos])
+ return(ARGS_WORD);
+
+ if ( ! (ARGS_TABSEP & fl))
+ while (buf[*pos] && ' ' == buf[*pos])
+ (*pos)++;
+
+ if (buf[*pos])
+ return(ARGS_WORD);
+
+ if ( ! pwarn(mdoc, line, *pos, WTAILWS))
+ return(ARGS_ERROR);
+
+ return(ARGS_WORD);
+ }
+
+ /*
+ * If we're a quoted string (and quoted strings are allowed),
+ * then parse ahead to the next quote. If none's found, it's an
+ * error. After, parse to the next word.
+ */
+
+ *v = &buf[++(*pos)];
+
+ while (buf[*pos] && '\"' != buf[*pos])
+ (*pos)++;
+
+ if (0 == buf[*pos]) {
+ (void)perr(mdoc, line, *pos, EQUOTTERM);
+ return(ARGS_ERROR);
+ }
+
+ buf[(*pos)++] = 0;
+ if (0 == buf[*pos])
+ return(ARGS_QWORD);
+
+ while (buf[*pos] && ' ' == buf[*pos])
+ (*pos)++;
+
+ if (buf[*pos])
+ return(ARGS_QWORD);
+
+ if ( ! pwarn(mdoc, line, *pos, WTAILWS))
+ return(ARGS_ERROR);
+
+ return(ARGS_QWORD);
+}
+
+
+static int
+argv_a2arg(int tok, const char *argv)
+{
+
+ /*
+ * 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!
+ */
+
+ switch (tok) {
+ case (MDOC_An):
+ if (xstrcmp(argv, "split"))
+ return(MDOC_Split);
+ else if (xstrcmp(argv, "nosplit"))
+ return(MDOC_Nosplit);
+ break;
+
+ case (MDOC_Bd):
+ if (xstrcmp(argv, "ragged"))
+ return(MDOC_Ragged);
+ else if (xstrcmp(argv, "unfilled"))
+ return(MDOC_Unfilled);
+ else if (xstrcmp(argv, "filled"))
+ return(MDOC_Filled);
+ else if (xstrcmp(argv, "literal"))
+ return(MDOC_Literal);
+ else if (xstrcmp(argv, "file"))
+ return(MDOC_File);
+ else if (xstrcmp(argv, "offset"))
+ return(MDOC_Offset);
+ else if (xstrcmp(argv, "compact"))
+ return(MDOC_Compact);
+ break;
+
+ case (MDOC_Bf):
+ if (xstrcmp(argv, "emphasis"))
+ return(MDOC_Emphasis);
+ else if (xstrcmp(argv, "literal"))
+ return(MDOC_Literal);
+ else if (xstrcmp(argv, "symbolic"))
+ return(MDOC_Symbolic);
+ break;
+
+ case (MDOC_Bk):
+ if (xstrcmp(argv, "words"))
+ return(MDOC_Words);
+ break;
+
+ case (MDOC_Bl):
+ if (xstrcmp(argv, "bullet"))
+ return(MDOC_Bullet);
+ else if (xstrcmp(argv, "dash"))
+ return(MDOC_Dash);
+ else if (xstrcmp(argv, "hyphen"))
+ return(MDOC_Hyphen);
+ else if (xstrcmp(argv, "item"))
+ return(MDOC_Item);
+ else if (xstrcmp(argv, "enum"))
+ return(MDOC_Enum);
+ else if (xstrcmp(argv, "tag"))
+ return(MDOC_Tag);
+ else if (xstrcmp(argv, "diag"))
+ return(MDOC_Diag);
+ else if (xstrcmp(argv, "hang"))
+ return(MDOC_Hang);
+ else if (xstrcmp(argv, "ohang"))
+ return(MDOC_Ohang);
+ else if (xstrcmp(argv, "inset"))
+ return(MDOC_Inset);
+ else if (xstrcmp(argv, "column"))
+ return(MDOC_Column);
+ else if (xstrcmp(argv, "width"))
+ return(MDOC_Width);
+ else if (xstrcmp(argv, "offset"))
+ return(MDOC_Offset);
+ else if (xstrcmp(argv, "compact"))
+ return(MDOC_Compact);
+ else if (xstrcmp(argv, "nested"))
+ return(MDOC_Nested);
+ break;
+
+ case (MDOC_Rv):
+ /* FALLTHROUGH */
+ case (MDOC_Ex):
+ if (xstrcmp(argv, "std"))
+ return(MDOC_Std);
+ break;
+ default:
+ break;
+ }
+
+ return(MDOC_ARG_MAX);
+}
+
+
+static int
+argv_multi(struct mdoc *mdoc, int line,
+ struct mdoc_argv *v, int *pos, char *buf)
+{
+ int c, ppos;
+ char *p;
+
+ ppos = *pos;
+
+ for (v->sz = 0; ; v->sz++) {
+ if ('-' == buf[*pos])
+ break;
+ c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ else if (ARGS_EOLN == c)
+ break;
+
+ if (0 == v->sz % MULTI_STEP)
+ v->value = xrealloc(v->value,
+ (v->sz + MULTI_STEP) * sizeof(char *));
+ if (NULL == (v->value[(int)v->sz] = strdup(p)))
+ err(1, "strdup");
+ }
+
+ if (v->sz)
+ return(1);
+
+ return(perr(mdoc, line, ppos, EARGVAL));
+}
+
+
+static int
+argv_opt_single(struct mdoc *mdoc, int line,
+ struct mdoc_argv *v, int *pos, char *buf)
+{
+ int c;
+ char *p;
+
+ if ('-' == buf[*pos])
+ return(1);
+
+ c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ if (ARGS_EOLN == c)
+ return(1);
+
+ v->sz = 1;
+ if (NULL == (v->value = calloc(1, sizeof(char *))))
+ err(1, "calloc");
+ if (NULL == (v->value[0] = strdup(p)))
+ err(1, "strdup");
+ return(1);
+}
+
+
+/*
+ * Parse a single, mandatory value from the stream.
+ */
+static int
+argv_single(struct mdoc *mdoc, int line,
+ struct mdoc_argv *v, int *pos, char *buf)
+{
+ int c, ppos;
+ char *p;
+
+ ppos = *pos;
+
+ c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
+ if (ARGS_ERROR == c)
+ return(0);
+ if (ARGS_EOLN == c)
+ return(perr(mdoc, line, ppos, EARGVAL));
+
+ v->sz = 1;
+ if (NULL == (v->value = calloc(1, sizeof(char *))))
+ err(1, "calloc");
+ if (NULL == (v->value[0] = strdup(p)))
+ err(1, "strdup");
+ 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);
+}