+/*
+ * 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.
+ */
+
+#define ARGS_QUOTED (1 << 0)
+#define ARGS_DELIM (1 << 1)
+#define ARGS_TABSEP (1 << 2)
+
+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_arg *, int *, char *);
+static int argv_single(struct mdoc *, int,
+ struct mdoc_arg *, int *, char *);
+static int argv_multi(struct mdoc *, int,
+ struct mdoc_arg *, int *, char *);
+static int pwarn(struct mdoc *, int, int, int);
+static int perr(struct mdoc *, int, int, int);
+
+/* Warning messages. */
+
+#define WQUOTPARM (0)
+#define WARGVPARM (1)
+#define WCOLEMPTY (2)
+#define WTAILWS (3)
+
+/* Error messages. */
+
+#define EQUOTTERM (0)
+#define EARGVAL (1)
+#define EARGMANY (2)
+
+static int mdoc_argflags[MDOC_MAX] = {
+ 0, /* \" */
+ 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 */
+ 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, /* 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 */
+ 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, /* 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 */
+};
+
+
+static int
+perr(struct mdoc *mdoc, int line, int pos, int code)
+{
+ int c;
+
+ switch (code) {
+ case (EQUOTTERM):
+ c = mdoc_perr(mdoc, line, pos,
+ "unterminated quoted parameter");
+ break;
+ case (EARGVAL):
+ c = mdoc_perr(mdoc, line, pos,
+ "argument requires a value");
+ break;
+ case (EARGMANY):
+ c = mdoc_perr(mdoc, line, pos,
+ "too many values for argument");
+ break;
+ default:
+ abort();
+ /* NOTREACHED */
+ }
+ return(c);
+}
+
+
+static int
+pwarn(struct mdoc *mdoc, int line, int pos, int code)
+{
+ int c;
+
+ switch (code) {
+ case (WQUOTPARM):
+ c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
+ "unexpected quoted parameter");
+ break;
+ case (WARGVPARM):
+ c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
+ "argument-like parameter");
+ break;
+ case (WCOLEMPTY):
+ c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
+ "last list column is empty");
+ break;
+ case (WTAILWS):
+ c = mdoc_pwarn(mdoc, line, pos, WARN_COMPAT,
+ "trailing whitespace");
+ break;
+ default:
+ abort();
+ /* NOTREACHED */
+ }
+ return(c);
+}
+
+
+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];
+
+ /*
+ * First see if we should use TABSEP (Bl -column). This
+ * invalidates the use of ARGS_DELIM.
+ */
+
+ if (MDOC_It == tok) {
+ for (n = mdoc->last; n; n = n->parent)
+ if (MDOC_BLOCK == n->type)
+ if (MDOC_Bl == n->tok)
+ break;
+ assert(n);
+ c = (int)n->data.block.argc;
+ assert(c > 0);
+
+ /* LINTED */
+ for (i = 0; i < c; i++) {
+ switch (n->data.block.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;
+ }
+ }
+ }
git.ckatri.com / mandoc.git / blobdiff