-/* $Id: roff.c,v 1.19 2008/11/29 16:23:22 kristaps Exp $ */
+/* $Id: roff.c,v 1.84 2010/05/24 23:54:18 schwarze Exp $ */
/*
- * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2010 Kristaps Dzonsons <kristaps@bsd.lv>
*
* 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.
+ * 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.
+ * 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.
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <assert.h>
-#include <ctype.h>
-#include <err.h>
-#include <stdarg.h>
#include <stdlib.h>
-#include <stdio.h>
#include <string.h>
-#include <time.h>
-
-#include "libmdocml.h"
-#include "private.h"
-
-/* FIXME: warn if Pp occurs before/after Sh etc. (see mdoc.samples). */
-
-/* FIXME: warn about "X section only" macros. */
-
-/* FIXME: warn about empty lists. */
-
-/* FIXME: ; : } ) (etc.) after text macros? */
-
-/* FIXME: NAME section needs specific elements. */
-
-/* FIXME: don't print Os, just do roffbegin. */
-
-#define ROFF_MAXARG 32
+#include <stdio.h>
-enum roffd {
- ROFF_ENTER = 0,
- ROFF_EXIT
+#include "mandoc.h"
+#include "roff.h"
+
+#define RSTACK_MAX 128
+
+#define ROFF_CTL(c) \
+ ('.' == (c) || '\'' == (c))
+
+enum rofft {
+ ROFF_am,
+ ROFF_ami,
+ ROFF_am1,
+ ROFF_de,
+ ROFF_dei,
+ ROFF_de1,
+ ROFF_ds,
+ ROFF_el,
+ ROFF_ie,
+ ROFF_if,
+ ROFF_ig,
+ ROFF_rm,
+ ROFF_tr,
+ ROFF_cblock,
+ ROFF_ccond,
+ ROFF_MAX
};
-enum rofftype {
- ROFF_COMMENT,
- ROFF_TEXT,
- ROFF_LAYOUT,
- ROFF_SPECIAL
+enum roffrule {
+ ROFFRULE_ALLOW,
+ ROFFRULE_DENY
};
-#define ROFFCALL_ARGS \
- int tok, struct rofftree *tree, \
- char *argv[], enum roffd type
-
-struct rofftree;
-
-struct rofftok {
- int (*cb)(ROFFCALL_ARGS); /* Callback. */
- const int *args; /* Args (or NULL). */
- const int *parents;
- const int *children;
- int ctx;
- enum rofftype type; /* Type of macro. */
- int flags;
-#define ROFF_PARSED (1 << 0) /* "Parsed". */
-#define ROFF_CALLABLE (1 << 1) /* "Callable". */
-#define ROFF_QUOTES (1 << 2) /* Quoted args. */
-#define ROFF_SHALLOW (1 << 3) /* Nesting block. */
-#define ROFF_PUNCT (1 << 4)
+struct roff {
+ struct roffnode *last; /* leaf of stack */
+ mandocmsg msg; /* err/warn/fatal messages */
+ void *data; /* privdata for messages */
+ enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */
+ int rstackpos; /* position in rstack */
};
-struct roffarg {
- int flags;
-#define ROFF_VALUE (1 << 0) /* Has a value. */
+struct roffnode {
+ enum rofft tok; /* type of node */
+ struct roffnode *parent; /* up one in stack */
+ int line; /* parse line */
+ int col; /* parse col */
+ char *end; /* end-rules: custom token */
+ int endspan; /* end-rules: next-line or infty */
+ enum roffrule rule; /* current evaluation rule */
};
-struct roffnode {
- int tok; /* Token id. */
- struct roffnode *parent; /* Parent (or NULL). */
+#define ROFF_ARGS struct roff *r, /* parse ctx */ \
+ enum rofft tok, /* tok of macro */ \
+ char **bufp, /* input buffer */ \
+ size_t *szp, /* size of input buffer */ \
+ int ln, /* parse line */ \
+ int ppos, /* original pos in buffer */ \
+ int pos, /* current pos in buffer */ \
+ int *offs /* reset offset of buffer data */
+
+typedef enum rofferr (*roffproc)(ROFF_ARGS);
+
+struct roffmac {
+ const char *name; /* macro name */
+ roffproc proc; /* process new macro */
+ roffproc text; /* process as child text of macro */
+ roffproc sub; /* process as child of macro */
+ int flags;
+#define ROFFMAC_STRUCT (1 << 0) /* always interpret */
};
-struct rofftree {
- struct roffnode *last; /* Last parsed node. */
- char *cur;
-
- time_t date; /* `Dd' results. */
- char os[64]; /* `Os' results. */
- char title[64]; /* `Dt' results. */
- char section[64]; /* `Dt' results. */
- char volume[64]; /* `Dt' results. */
-
- int state;
-#define ROFF_PRELUDE (1 << 1) /* In roff prelude. */
-#define ROFF_PRELUDE_Os (1 << 2) /* `Os' is parsed. */
-#define ROFF_PRELUDE_Dt (1 << 3) /* `Dt' is parsed. */
-#define ROFF_PRELUDE_Dd (1 << 4) /* `Dd' is parsed. */
-#define ROFF_BODY (1 << 5) /* In roff body. */
-
- struct roffcb cb;
- void *arg;
+static enum rofferr roff_block(ROFF_ARGS);
+static enum rofferr roff_block_text(ROFF_ARGS);
+static enum rofferr roff_block_sub(ROFF_ARGS);
+static enum rofferr roff_cblock(ROFF_ARGS);
+static enum rofferr roff_ccond(ROFF_ARGS);
+static enum rofferr roff_cond(ROFF_ARGS);
+static enum rofferr roff_cond_text(ROFF_ARGS);
+static enum rofferr roff_cond_sub(ROFF_ARGS);
+static enum rofferr roff_line(ROFF_ARGS);
+
+const struct roffmac roffs[ROFF_MAX] = {
+ { "am", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "ami", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "am1", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "de", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "dei", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "de1", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "ds", roff_line, NULL, NULL, 0 },
+ { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT },
+ { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT },
+ { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT },
+ { "ig", roff_block, roff_block_text, roff_block_sub, 0 },
+ { "rm", roff_line, NULL, NULL, 0 },
+ { "tr", roff_line, NULL, NULL, 0 },
+ { ".", roff_cblock, NULL, NULL, 0 },
+ { "\\}", roff_ccond, NULL, NULL, 0 },
};
-static int roff_Dd(ROFFCALL_ARGS);
-static int roff_Dt(ROFFCALL_ARGS);
-static int roff_Os(ROFFCALL_ARGS);
-
-static int roff_layout(ROFFCALL_ARGS);
-static int roff_text(ROFFCALL_ARGS);
-static int roff_comment(ROFFCALL_ARGS);
-static int roff_close(ROFFCALL_ARGS);
-static int roff_special(ROFFCALL_ARGS);
-
-static struct roffnode *roffnode_new(int, struct rofftree *);
-static void roffnode_free(struct rofftree *);
-
-static void roff_warn(const struct rofftree *,
- const char *, char *, ...);
-static void roff_err(const struct rofftree *,
- const char *, char *, ...);
-
-static int roffscan(int, const int *);
-static int rofffindtok(const char *);
-static int rofffindarg(const char *);
-static int rofffindcallable(const char *);
-static int roffargs(const struct rofftree *,
- int, char *, char **);
-static int roffargok(int, int);
-static int roffnextopt(const struct rofftree *,
- int, char ***, char **);
-static int roffparse(struct rofftree *, char *);
-static int textparse(const struct rofftree *, char *);
-
-
-static const int roffarg_An[] = { ROFF_Split, ROFF_Nosplit,
- ROFF_ARGMAX };
-static const int roffarg_Bd[] = { ROFF_Ragged, ROFF_Unfilled,
- ROFF_Literal, ROFF_File, ROFF_Offset, ROFF_Filled,
- ROFF_Compact, ROFF_ARGMAX };
-static const int roffarg_Bk[] = { ROFF_Words, ROFF_ARGMAX };
-static const int roffarg_Ex[] = { ROFF_Std, ROFF_ARGMAX };
-static const int roffarg_Rv[] = { ROFF_Std, ROFF_ARGMAX };
-static const int roffarg_Bl[] = { ROFF_Bullet, ROFF_Dash,
- ROFF_Hyphen, ROFF_Item, ROFF_Enum, ROFF_Tag, ROFF_Diag,
- ROFF_Hang, ROFF_Ohang, ROFF_Inset, ROFF_Column, ROFF_Offset,
- ROFF_Width, ROFF_Compact, ROFF_ARGMAX };
-static const int roffarg_St[] = {
- ROFF_p1003_1_88, ROFF_p1003_1_90, ROFF_p1003_1_96,
- ROFF_p1003_1_2001, ROFF_p1003_1_2004, ROFF_p1003_1,
- ROFF_p1003_1b, ROFF_p1003_1b_93, ROFF_p1003_1c_95,
- ROFF_p1003_1g_2000, ROFF_p1003_2_92, ROFF_p1387_2_95,
- ROFF_p1003_2, ROFF_p1387_2, ROFF_isoC_90, ROFF_isoC_amd1,
- ROFF_isoC_tcor1, ROFF_isoC_tcor2, ROFF_isoC_99, ROFF_ansiC,
- ROFF_ansiC_89, ROFF_ansiC_99, ROFF_ieee754, ROFF_iso8802_3,
- ROFF_xpg3, ROFF_xpg4, ROFF_xpg4_2, ROFF_xpg4_3, ROFF_xbd5,
- ROFF_xcu5, ROFF_xsh5, ROFF_xns5, ROFF_xns5_2d2_0,
- ROFF_xcurses4_2, ROFF_susv2, ROFF_susv3, ROFF_svid4,
- ROFF_ARGMAX };
-
-static const int roffchild_Bl[] = { ROFF_It, ROFF_El, ROFF_MAX };
-static const int roffchild_Fo[] = { ROFF_Fa, ROFF_Fc, ROFF_MAX };
-static const int roffchild_Oo[] = { ROFF_Op, ROFF_Oc, ROFF_MAX };
-static const int roffchild_Rs[] = { ROFF_Re, ROFF__A, ROFF__B,
- ROFF__D, ROFF__I, ROFF__J, ROFF__N, ROFF__O, ROFF__P,
- ROFF__R, ROFF__T, ROFF__V, ROFF_MAX };
-
-static const int roffparent_El[] = { ROFF_Bl, ROFF_It, ROFF_MAX };
-static const int roffparent_Fc[] = { ROFF_Fo, ROFF_Fa, ROFF_MAX };
-static const int roffparent_Oc[] = { ROFF_Oo, ROFF_Oc, ROFF_MAX };
-static const int roffparent_It[] = { ROFF_Bl, ROFF_It, ROFF_MAX };
-static const int roffparent_Re[] = { ROFF_Rs, ROFF_MAX };
-
-/* Table of all known tokens. */
-static const struct rofftok tokens[ROFF_MAX] = {
- {roff_comment, NULL, NULL, NULL, 0, ROFF_COMMENT, 0 }, /* \" */
- { roff_Dd, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dd */
- { roff_Dt, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dt */
- { roff_Os, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_QUOTES }, /* Os */
- { roff_layout, NULL, NULL, NULL, ROFF_Sh, ROFF_LAYOUT, ROFF_PARSED }, /* Sh */
- { roff_layout, NULL, NULL, NULL, ROFF_Ss, ROFF_LAYOUT, ROFF_PARSED }, /* Ss */
- { roff_text, NULL, NULL, NULL, ROFF_Pp, ROFF_TEXT, 0 }, /* Pp */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* D1 */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Dl */
- { roff_layout, roffarg_Bd, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bd */
- { roff_close, NULL, NULL, NULL, ROFF_Bd, ROFF_LAYOUT, 0 }, /* Ed */
- { roff_layout, roffarg_Bl, NULL, roffchild_Bl, 0, ROFF_LAYOUT, 0 }, /* Bl */
- { roff_close, NULL, roffparent_El, NULL, ROFF_Bl, ROFF_LAYOUT, 0 }, /* El */
- { roff_layout, NULL, roffparent_It, NULL, ROFF_It, ROFF_LAYOUT, ROFF_SHALLOW }, /* It */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Ad */
- { roff_text, roffarg_An, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* An */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Ar */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_QUOTES }, /* Cd */ /* XXX man.4 only */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Cm */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Dv */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Er */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Ev */ /* XXX needs arg */
- { roff_text, roffarg_Ex, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ex */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Fa */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Fd */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Fl */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Fn */ /* XXX needs arg */ /* FIXME */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Ft */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Ic */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* In */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Li */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_QUOTES }, /* Nd */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Nm */ /* FIXME */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Op */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ot */ /* XXX deprecated */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Pa */
- { roff_text, roffarg_Rv, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Rv */
- { roff_text, roffarg_St, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* St */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Va */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Vt */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Xr */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* %A */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %B */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %D */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %I */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %J */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %N */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %O */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %P */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %R */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* %T */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %V */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ac */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ao */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Aq */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* At */ /* XXX at most 2 args */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bc */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Bf */ /* FIXME */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bo */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bq */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Bsx */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Bx */
- {roff_special, NULL, NULL, NULL, 0, ROFF_SPECIAL, 0 }, /* Db */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dc */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Do */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dq */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ec */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ef */ /* FIXME */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Em */ /* XXX needs arg */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Eo */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Fx */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Ms */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* No */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ns */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Nx */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Ox */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pc */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Pf */
- { roff_text, NULL, NULL, NULL, 0, ROFF_LAYOUT, ROFF_PARSED | ROFF_CALLABLE }, /* Po */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pq */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qc */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ql */
- { roff_layout, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qo */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qq */
- { roff_close, NULL, roffparent_Re, NULL, ROFF_Rs, ROFF_LAYOUT, 0 }, /* Re */
- { roff_layout, NULL, NULL, roffchild_Rs, 0, ROFF_LAYOUT, 0 }, /* Rs */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sc */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* So */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sq */
- {roff_special, NULL, NULL, NULL, 0, ROFF_SPECIAL, 0 }, /* Sm */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sx */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Sy */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_PUNCT }, /* Tn */
- { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_PUNCT }, /* Ux */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xc */
- { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xo */
- { roff_layout, NULL, NULL, roffchild_Fo, 0, ROFF_LAYOUT, 0 }, /* Fo */
- { roff_close, NULL, roffparent_Fc, NULL, ROFF_Fo, ROFF_LAYOUT, 0 }, /* Fc */
- { roff_layout, NULL, NULL, roffchild_Oo, 0, ROFF_LAYOUT, 0 }, /* Oo */
- { roff_close, NULL, roffparent_Oc, NULL, ROFF_Oo, ROFF_LAYOUT, 0 }, /* Oc */
- { roff_layout, roffarg_Bk, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bk */
- { roff_close, NULL, NULL, NULL, ROFF_Bk, ROFF_LAYOUT, 0 }, /* Ek */
- };
-
-/* Table of all known token arguments. */
-static const int tokenargs[ROFF_ARGMAX] = {
- 0, 0, 0, 0,
- 0, ROFF_VALUE, ROFF_VALUE, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, ROFF_VALUE, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- };
-
-const char *const toknamesp[ROFF_MAX] = {
- "\\\"", "Dd", "Dt", "Os",
- "Sh", "Ss", "Pp", "D1",
- "Dl", "Bd", "Ed", "Bl",
- "El", "It", "Ad", "An",
- "Ar", "Cd", "Cm", "Dv",
- "Er", "Ev", "Ex", "Fa",
- "Fd", "Fl", "Fn", "Ft",
- "Ic", "In", "Li", "Nd",
- "Nm", "Op", "Ot", "Pa",
- "Rv", "St", "Va", "Vt",
- "Xr", "\%A", "\%B", "\%D",
- "\%I", "\%J", "\%N", "\%O",
- "\%P", "\%R", "\%T", "\%V",
- "Ac", "Ao", "Aq", "At",
- "Bc", "Bf", "Bo", "Bq",
- "Bsx", "Bx", "Db", "Dc",
- "Do", "Dq", "Ec", "Ef",
- "Em", "Eo", "Fx", "Ms",
- "No", "Ns", "Nx", "Ox",
- "Pc", "Pf", "Po", "Pq",
- "Qc", "Ql", "Qo", "Qq",
- "Re", "Rs", "Sc", "So",
- "Sq", "Sm", "Sx", "Sy",
- "Tn", "Ux", "Xc", "Xo",
- "Fo", "Fc", "Oo", "Oc",
- "Bk", "Ek",
- };
-
-const char *const tokargnamesp[ROFF_ARGMAX] = {
- "split", "nosplit", "ragged",
- "unfilled", "literal", "file",
- "offset", "bullet", "dash",
- "hyphen", "item", "enum",
- "tag", "diag", "hang",
- "ohang", "inset", "column",
- "width", "compact", "std",
- "p1003.1-88", "p1003.1-90", "p1003.1-96",
- "p1003.1-2001", "p1003.1-2004", "p1003.1",
- "p1003.1b", "p1003.1b-93", "p1003.1c-95",
- "p1003.1g-2000", "p1003.2-92", "p1387.2-95",
- "p1003.2", "p1387.2", "isoC-90",
- "isoC-amd1", "isoC-tcor1", "isoC-tcor2",
- "isoC-99", "ansiC", "ansiC-89",
- "ansiC-99", "ieee754", "iso8802-3",
- "xpg3", "xpg4", "xpg4.2",
- "xpg4.3", "xbd5", "xcu5",
- "xsh5", "xns5", "xns5.2d2.0",
- "xcurses4.2", "susv2", "susv3",
- "svid4", "filled", "words",
- };
-
-const char *const *toknames = toknamesp;
-const char *const *tokargnames = tokargnamesp;
+static void roff_free1(struct roff *);
+static enum rofft roff_hash_find(const char *);
+static void roffnode_cleanscope(struct roff *);
+static int roffnode_push(struct roff *,
+ enum rofft, int, int);
+static void roffnode_pop(struct roff *);
+static enum rofft roff_parse(const char *, int *);
-int
-roff_free(struct rofftree *tree, int flush)
+/*
+ * Look up a roff token by its name. Returns ROFF_MAX if no macro by
+ * the nil-terminated string name could be found.
+ */
+static enum rofft
+roff_hash_find(const char *p)
{
- int error, t;
- struct roffnode *n;
-
- error = 0;
-
- if ( ! flush)
- goto end;
-
- error = 1;
-
- if (ROFF_PRELUDE & tree->state) {
- roff_warn(tree, NULL, "prelude never finished");
- goto end;
- }
-
- for (n = tree->last; n->parent; n = n->parent) {
- if (0 != tokens[n->tok].ctx)
- continue;
- roff_warn(tree, NULL, "closing explicit scope `%s'",
- toknames[n->tok]);
- goto end;
- }
-
- while (tree->last) {
- t = tree->last->tok;
- if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
- goto end;
- }
-
- error = 0;
-
-end:
+ int i;
- while (tree->last)
- roffnode_free(tree);
+ /* FIXME: make this be fast and efficient. */
- free(tree);
+ for (i = 0; i < (int)ROFF_MAX; i++)
+ if (0 == strcmp(roffs[i].name, p))
+ return((enum rofft)i);
- return(error ? 0 : 1);
+ return(ROFF_MAX);
}
-struct rofftree *
-roff_alloc(const struct roffcb *cb, void *args)
+/*
+ * Pop the current node off of the stack of roff instructions currently
+ * pending.
+ */
+static void
+roffnode_pop(struct roff *r)
{
- struct rofftree *tree;
-
- assert(args);
- assert(cb);
-
- if (NULL == (tree = calloc(1, sizeof(struct rofftree))))
- err(1, "calloc");
+ struct roffnode *p;
- tree->state = ROFF_PRELUDE;
- tree->arg = args;
+ assert(r->last);
+ p = r->last;
- (void)memcpy(&tree->cb, cb, sizeof(struct roffcb));
+ if (ROFF_el == p->tok)
+ if (r->rstackpos > -1)
+ r->rstackpos--;
- return(tree);
+ r->last = r->last->parent;
+ if (p->end)
+ free(p->end);
+ free(p);
}
-int
-roff_engine(struct rofftree *tree, char *buf)
+/*
+ * Push a roff node onto the instruction stack. This must later be
+ * removed with roffnode_pop().
+ */
+static int
+roffnode_push(struct roff *r, enum rofft tok, int line, int col)
{
+ struct roffnode *p;
- tree->cur = buf;
- assert(buf);
-
- if (0 == *buf) {
- roff_warn(tree, buf, "blank line");
+ if (NULL == (p = calloc(1, sizeof(struct roffnode)))) {
+ (*r->msg)(MANDOCERR_MEM, r->data, line, col, NULL);
return(0);
- } else if ('.' != *buf)
- return(textparse(tree, buf));
+ }
+
+ p->tok = tok;
+ p->parent = r->last;
+ p->line = line;
+ p->col = col;
+ p->rule = p->parent ? p->parent->rule : ROFFRULE_DENY;
- return(roffparse(tree, buf));
+ r->last = p;
+ return(1);
}
-static int
-textparse(const struct rofftree *tree, char *buf)
+static void
+roff_free1(struct roff *r)
{
- return((*tree->cb.roffdata)(tree->arg, buf));
+ while (r->last)
+ roffnode_pop(r);
}
-static int
-roffargs(const struct rofftree *tree,
- int tok, char *buf, char **argv)
+void
+roff_reset(struct roff *r)
{
- int i;
- char *p;
-
- assert(tok >= 0 && tok < ROFF_MAX);
- assert('.' == *buf);
-
- p = buf;
-
- /* LINTED */
- for (i = 0; *buf && i < ROFF_MAXARG; i++) {
- if ('\"' == *buf) {
- argv[i] = ++buf;
- while (*buf && '\"' != *buf)
- buf++;
- if (0 == *buf) {
- roff_err(tree, argv[i], "unclosed "
- "quote in argument "
- "list for `%s'",
- toknames[tok]);
- return(0);
- }
- } else {
- argv[i] = buf++;
- while (*buf && ! isspace(*buf))
- buf++;
- if (0 == *buf)
- continue;
- }
- *buf++ = 0;
- while (*buf && isspace(*buf))
- buf++;
- }
-
- assert(i > 0);
- if (ROFF_MAXARG == i && *buf) {
- roff_err(tree, p, "too many arguments for `%s'", toknames
- [tok]);
- return(0);
- }
- argv[i] = NULL;
- return(1);
+ roff_free1(r);
}
-/* XXX */
-static int
-roffscan(int tok, const int *tokv)
+void
+roff_free(struct roff *r)
{
- if (NULL == tokv)
- return(1);
-
- for ( ; ROFF_MAX != *tokv; tokv++)
- if (tok == *tokv)
- return(1);
-
- return(0);
+ roff_free1(r);
+ free(r);
}
-static int
-roffparse(struct rofftree *tree, char *buf)
+struct roff *
+roff_alloc(const mandocmsg msg, void *data)
{
- int tok, t;
- struct roffnode *n;
- char *argv[ROFF_MAXARG];
- char **argvp;
+ struct roff *r;
- if (ROFF_MAX == (tok = rofffindtok(buf + 1))) {
- roff_err(tree, buf + 1, "bogus line macro");
- return(0);
- } else if (NULL == tokens[tok].cb) {
- roff_err(tree, buf + 1, "unsupported macro `%s'",
- toknames[tok]);
- return(0);
- } else if (ROFF_COMMENT == tokens[tok].type)
- return(1);
-
- if ( ! roffargs(tree, tok, buf, argv))
+ if (NULL == (r = calloc(1, sizeof(struct roff)))) {
+ (*msg)(MANDOCERR_MEM, data, 0, 0, NULL);
return(0);
+ }
- argvp = (char **)argv;
-
- /*
- * Prelude macros break some assumptions, so branch now.
- */
-
- if (ROFF_PRELUDE & tree->state) {
- assert(NULL == tree->last);
- return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
- } else
- assert(tree->last);
-
- assert(ROFF_BODY & tree->state);
-
- /*
- * First check that our possible parents and parent's possible
- * children are satisfied.
- */
+ r->msg = msg;
+ r->data = data;
+ r->rstackpos = -1;
+ return(r);
+}
- if ( ! roffscan(tree->last->tok, tokens[tok].parents)) {
- roff_err(tree, *argvp, "`%s' has invalid parent `%s'",
- toknames[tok],
- toknames[tree->last->tok]);
- return(0);
- }
- if ( ! roffscan(tok, tokens[tree->last->tok].children)) {
- roff_err(tree, *argvp, "`%s' is invalid child of `%s'",
- toknames[tok],
- toknames[tree->last->tok]);
- return(0);
- }
+enum rofferr
+roff_parseln(struct roff *r, int ln,
+ char **bufp, size_t *szp, int pos, int *offs)
+{
+ enum rofft t;
+ int ppos;
/*
- * Branch if we're not a layout token.
+ * First, if a scope is open and we're not a macro, pass the
+ * text through the macro's filter. If a scope isn't open and
+ * we're not a macro, just let it through.
*/
- if (ROFF_LAYOUT != tokens[tok].type)
- return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
-
- /*
- * Check our scope rules.
- */
-
- if (0 == tokens[tok].ctx)
- return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
+ if (r->last && ! ROFF_CTL((*bufp)[pos])) {
+ t = r->last->tok;
+ assert(roffs[t].text);
+ return((*roffs[t].text)
+ (r, t, bufp, szp, ln, pos, pos, offs));
+ } else if ( ! ROFF_CTL((*bufp)[pos]))
+ return(ROFF_CONT);
/*
- * First consider implicit-end tags, like as follows:
- * .Sh SECTION 1
- * .Sh SECTION 2
- * In this, we want to close the scope of the NAME section. If
- * there's an intermediary implicit-end tag, such as
- * .Sh SECTION 1
- * .Ss Subsection 1
- * .Sh SECTION 2
- * then it must be closed as well.
+ * If a scope is open, go to the child handler for that macro,
+ * as it may want to preprocess before doing anything with it.
*/
- if (tok == tokens[tok].ctx) {
- /*
- * First search up to the point where we must close.
- * If one doesn't exist, then we can open a new scope.
- */
-
- for (n = tree->last; n; n = n->parent) {
- assert(0 == tokens[n->tok].ctx ||
- n->tok == tokens[n->tok].ctx);
- if (n->tok == tok)
- break;
- if (ROFF_SHALLOW & tokens[tok].flags) {
- n = NULL;
- break;
- }
- }
-
- /*
- * Create a new scope, as no previous one exists to
- * close out.
- */
-
- if (NULL == n)
- return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
-
- /*
- * Close out all intermediary scoped blocks, then hang
- * the current scope from our predecessor's parent.
- */
-
- do {
- t = tree->last->tok;
- if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
- return(0);
- } while (t != tok);
-
- return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
+ if (r->last) {
+ t = r->last->tok;
+ assert(roffs[t].sub);
+ return((*roffs[t].sub)
+ (r, t, bufp, szp, ln, pos, pos, offs));
}
/*
- * Now consider explicit-end tags, where we want to close back
- * to a specific tag. Example:
- * .Bl
- * .It Item.
- * .El
- * In this, the `El' tag closes out the scope of `Bl'.
+ * Lastly, as we've no scope open, try to look up and execute
+ * the new macro. If no macro is found, simply return and let
+ * the compilers handle it.
*/
- assert(tree->last);
- assert(tok != tokens[tok].ctx && 0 != tokens[tok].ctx);
-
- /* LINTED */
- do {
- t = tree->last->tok;
- if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
- return(0);
- } while (t != tokens[tok].ctx);
+ ppos = pos;
+ if (ROFF_MAX == (t = roff_parse(*bufp, &pos)))
+ return(ROFF_CONT);
- assert(tree->last);
- return(1);
+ assert(roffs[t].proc);
+ return((*roffs[t].proc)
+ (r, t, bufp, szp, ln, ppos, pos, offs));
}
-static int
-rofffindarg(const char *name)
+int
+roff_endparse(struct roff *r)
{
- size_t i;
-
- /* FIXME: use a table, this is slow but ok for now. */
- /* LINTED */
- for (i = 0; i < ROFF_ARGMAX; i++)
- /* LINTED */
- if (0 == strcmp(name, tokargnames[i]))
- return((int)i);
-
- return(ROFF_ARGMAX);
+ if (NULL == r->last)
+ return(1);
+ return((*r->msg)(MANDOCERR_SCOPEEXIT, r->data, r->last->line,
+ r->last->col, NULL));
}
-static int
-rofffindtok(const char *buf)
+/*
+ * Parse a roff node's type from the input buffer. This must be in the
+ * form of ".foo xxx" in the usual way.
+ */
+static enum rofft
+roff_parse(const char *buf, int *pos)
{
- char token[4];
- size_t i;
-
- for (i = 0; *buf && ! isspace(*buf) && i < 3; i++, buf++)
- token[i] = *buf;
-
- if (i == 3)
- return(ROFF_MAX);
+ int j;
+ char mac[5];
+ enum rofft t;
- token[i] = 0;
+ assert(ROFF_CTL(buf[*pos]));
+ (*pos)++;
- /* FIXME: use a table, this is slow but ok for now. */
-
- /* LINTED */
- for (i = 0; i < ROFF_MAX; i++)
- /* LINTED */
- if (0 == strcmp(toknames[i], token))
- return((int)i);
-
- return(ROFF_MAX);
-}
+ while (buf[*pos] && (' ' == buf[*pos] || '\t' == buf[*pos]))
+ (*pos)++;
+ if ('\0' == buf[*pos])
+ return(ROFF_MAX);
-static int
-rofffindcallable(const char *name)
-{
- int c;
+ for (j = 0; j < 4; j++, (*pos)++)
+ if ('\0' == (mac[j] = buf[*pos]))
+ break;
+ else if (' ' == buf[*pos] || (j && '\\' == buf[*pos]))
+ break;
- if (ROFF_MAX == (c = rofffindtok(name)))
+ if (j == 4 || j < 1)
return(ROFF_MAX);
- assert(c >= 0 && c < ROFF_MAX);
- return(ROFF_CALLABLE & tokens[c].flags ? c : ROFF_MAX);
-}
+ mac[j] = '\0';
-static struct roffnode *
-roffnode_new(int tokid, struct rofftree *tree)
-{
- struct roffnode *p;
-
- if (NULL == (p = malloc(sizeof(struct roffnode))))
- err(1, "malloc");
+ if (ROFF_MAX == (t = roff_hash_find(mac)))
+ return(t);
- p->tok = tokid;
- p->parent = tree->last;
- tree->last = p;
+ while (buf[*pos] && ' ' == buf[*pos])
+ (*pos)++;
- return(p);
+ return(t);
}
-static int
-roffargok(int tokid, int argid)
+/* ARGSUSED */
+static enum rofferr
+roff_cblock(ROFF_ARGS)
{
- const int *c;
- if (NULL == (c = tokens[tokid].args))
- return(0);
+ /*
+ * A block-close `..' should only be invoked as a child of an
+ * ignore macro, otherwise raise a warning and just ignore it.
+ */
- for ( ; ROFF_ARGMAX != *c; c++)
- if (argid == *c)
- return(1);
+ if (NULL == r->last) {
+ if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
+ }
- return(0);
-}
+ switch (r->last->tok) {
+ case (ROFF_am):
+ /* FALLTHROUGH */
+ case (ROFF_ami):
+ /* FALLTHROUGH */
+ case (ROFF_am1):
+ /* FALLTHROUGH */
+ case (ROFF_de):
+ /* FALLTHROUGH */
+ case (ROFF_dei):
+ /* FALLTHROUGH */
+ case (ROFF_de1):
+ /* FALLTHROUGH */
+ case (ROFF_ig):
+ break;
+ default:
+ if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
+ }
+ if ((*bufp)[pos])
+ if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL))
+ return(ROFF_ERR);
-static void
-roffnode_free(struct rofftree *tree)
-{
- struct roffnode *p;
-
- assert(tree->last);
+ roffnode_pop(r);
+ roffnode_cleanscope(r);
+ return(ROFF_IGN);
- p = tree->last;
- tree->last = tree->last->parent;
- free(p);
}
-static int
-roffnextopt(const struct rofftree *tree, int tok,
- char ***in, char **val)
+static void
+roffnode_cleanscope(struct roff *r)
{
- char *arg, **argv;
- int v;
-
- *val = NULL;
- argv = *in;
- assert(argv);
-
- if (NULL == (arg = *argv))
- return(-1);
- if ('-' != *arg)
- return(-1);
-
- if (ROFF_ARGMAX == (v = rofffindarg(arg + 1))) {
- roff_warn(tree, arg, "argument-like parameter `%s' to "
- "`%s'", &arg[1], toknames[tok]);
- return(-1);
- }
-
- if ( ! roffargok(tok, v)) {
- roff_warn(tree, arg, "invalid argument parameter `%s' to "
- "`%s'", tokargnames[v], toknames[tok]);
- return(-1);
- }
-
- if ( ! (ROFF_VALUE & tokenargs[v]))
- return(v);
- *in = ++argv;
-
- if (NULL == *argv) {
- roff_err(tree, arg, "empty value of `%s' for `%s'",
- tokargnames[v], toknames[tok]);
- return(ROFF_ARGMAX);
+ while (r->last) {
+ if (--r->last->endspan < 0)
+ break;
+ roffnode_pop(r);
}
-
- return(v);
}
/* ARGSUSED */
-static int
-roff_Dd(ROFFCALL_ARGS)
+static enum rofferr
+roff_ccond(ROFF_ARGS)
{
- if (ROFF_BODY & tree->state) {
- assert( ! (ROFF_PRELUDE & tree->state));
- assert(ROFF_PRELUDE_Dd & tree->state);
- return(roff_text(tok, tree, argv, type));
+ if (NULL == r->last) {
+ if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
}
- assert(ROFF_PRELUDE & tree->state);
- assert( ! (ROFF_BODY & tree->state));
-
- if (ROFF_PRELUDE_Dd & tree->state) {
- roff_err(tree, *argv, "repeated `Dd' in prelude");
- return(0);
- } else if (ROFF_PRELUDE_Dt & tree->state) {
- roff_err(tree, *argv, "out-of-order `Dd' in prelude");
- return(0);
+ switch (r->last->tok) {
+ case (ROFF_el):
+ /* FALLTHROUGH */
+ case (ROFF_ie):
+ /* FALLTHROUGH */
+ case (ROFF_if):
+ break;
+ default:
+ if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
}
- /* TODO: parse date. */
+ if (r->last->endspan > -1) {
+ if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
+ }
- assert(NULL == tree->last);
- tree->state |= ROFF_PRELUDE_Dd;
+ if ((*bufp)[pos])
+ if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL))
+ return(ROFF_ERR);
- return(1);
+ roffnode_pop(r);
+ roffnode_cleanscope(r);
+ return(ROFF_IGN);
}
/* ARGSUSED */
-static int
-roff_Dt(ROFFCALL_ARGS)
+static enum rofferr
+roff_block(ROFF_ARGS)
{
-
- if (ROFF_BODY & tree->state) {
- assert( ! (ROFF_PRELUDE & tree->state));
- assert(ROFF_PRELUDE_Dt & tree->state);
- return(roff_text(tok, tree, argv, type));
+ int sv;
+ size_t sz;
+
+ if (ROFF_ig != tok && '\0' == (*bufp)[pos]) {
+ if ( ! (*r->msg)(MANDOCERR_NOARGS, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
+ } else if (ROFF_ig != tok) {
+ while ((*bufp)[pos] && ' ' != (*bufp)[pos])
+ pos++;
+ while (' ' == (*bufp)[pos])
+ pos++;
}
- assert(ROFF_PRELUDE & tree->state);
- assert( ! (ROFF_BODY & tree->state));
+ if ( ! roffnode_push(r, tok, ln, ppos))
+ return(ROFF_ERR);
- if ( ! (ROFF_PRELUDE_Dd & tree->state)) {
- roff_err(tree, *argv, "out-of-order `Dt' in prelude");
- return(0);
- } else if (ROFF_PRELUDE_Dt & tree->state) {
- roff_err(tree, *argv, "repeated `Dt' in prelude");
- return(0);
- }
-
- /* TODO: parse date. */
+ if ('\0' == (*bufp)[pos])
+ return(ROFF_IGN);
- assert(NULL == tree->last);
- tree->state |= ROFF_PRELUDE_Dt;
+ sv = pos;
+ while ((*bufp)[pos] && ' ' != (*bufp)[pos] &&
+ '\t' != (*bufp)[pos])
+ pos++;
- return(1);
-}
+ /*
+ * Note: groff does NOT like escape characters in the input.
+ * Instead of detecting this, we're just going to let it fly and
+ * to hell with it.
+ */
+ assert(pos > sv);
+ sz = (size_t)(pos - sv);
-/* ARGSUSED */
-static int
-roff_Os(ROFFCALL_ARGS)
-{
+ if (1 == sz && '.' == (*bufp)[sv])
+ return(ROFF_IGN);
- if (ROFF_EXIT == type) {
- roffnode_free(tree);
- return((*tree->cb.rofftail)(tree->arg));
- } else if (ROFF_BODY & tree->state) {
- assert( ! (ROFF_PRELUDE & tree->state));
- assert(ROFF_PRELUDE_Os & tree->state);
- return(roff_text(tok, tree, argv, type));
- }
+ r->last->end = malloc(sz + 1);
- assert(ROFF_PRELUDE & tree->state);
- if ( ! (ROFF_PRELUDE_Dt & tree->state) ||
- ! (ROFF_PRELUDE_Dd & tree->state)) {
- roff_err(tree, *argv, "out-of-order `Os' in prelude");
- return(0);
+ if (NULL == r->last->end) {
+ (*r->msg)(MANDOCERR_MEM, r->data, ln, pos, NULL);
+ return(ROFF_ERR);
}
- /* TODO: extract OS. */
-
- tree->state |= ROFF_PRELUDE_Os;
- tree->state &= ~ROFF_PRELUDE;
- tree->state |= ROFF_BODY;
+ memcpy(r->last->end, *bufp + sv, sz);
+ r->last->end[(int)sz] = '\0';
- assert(NULL == tree->last);
+ if ((*bufp)[pos])
+ if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL))
+ return(ROFF_ERR);
- if (NULL == roffnode_new(tok, tree))
- return(0);
-
- return((*tree->cb.roffhead)(tree->arg));
+ return(ROFF_IGN);
}
/* ARGSUSED */
-static int
-roff_layout(ROFFCALL_ARGS)
+static enum rofferr
+roff_block_sub(ROFF_ARGS)
{
- int i, c, argcp[ROFF_MAXARG];
- char *v, *argvp[ROFF_MAXARG];
+ enum rofft t;
+ int i, j;
- if (ROFF_PRELUDE & tree->state) {
- roff_err(tree, *argv, "`%s' disallowed in prelude",
- toknames[tok]);
- return(0);
- }
+ /*
+ * First check whether a custom macro exists at this level. If
+ * it does, then check against it. This is some of groff's
+ * stranger behaviours. If we encountered a custom end-scope
+ * tag and that tag also happens to be a "real" macro, then we
+ * need to try interpreting it again as a real macro. If it's
+ * not, then return ignore. Else continue.
+ */
- if (ROFF_EXIT == type) {
- roffnode_free(tree);
- return((*tree->cb.roffblkout)(tree->arg, tok));
- }
+ if (r->last->end) {
+ i = pos + 1;
+ while (' ' == (*bufp)[i] || '\t' == (*bufp)[i])
+ i++;
- i = 0;
- argv++;
+ for (j = 0; r->last->end[j]; j++, i++)
+ if ((*bufp)[i] != r->last->end[j])
+ break;
- while (-1 != (c = roffnextopt(tree, tok, &argv, &v))) {
- if (ROFF_ARGMAX == c)
- return(0);
+ if ('\0' == r->last->end[j] &&
+ ('\0' == (*bufp)[i] ||
+ ' ' == (*bufp)[i] ||
+ '\t' == (*bufp)[i])) {
+ roffnode_pop(r);
+ roffnode_cleanscope(r);
- argcp[i] = c;
- argvp[i] = v;
- i++;
- argv++;
+ if (ROFF_MAX != roff_parse(*bufp, &pos))
+ return(ROFF_RERUN);
+ return(ROFF_IGN);
+ }
}
- argcp[i] = ROFF_ARGMAX;
- argvp[i] = NULL;
-
- if (NULL == roffnode_new(tok, tree))
- return(0);
-
- if ( ! (*tree->cb.roffblkin)(tree->arg, tok, argcp, argvp))
- return(0);
+ /*
+ * If we have no custom end-query or lookup failed, then try
+ * pulling it out of the hashtable.
+ */
- if (NULL == *argv)
- return(1);
+ ppos = pos;
+ t = roff_parse(*bufp, &pos);
- if ( ! (*tree->cb.roffin)(tree->arg, tok, argcp, argvp))
- return(0);
+ /* If we're not a comment-end, then throw it away. */
+ if (ROFF_cblock != t)
+ return(ROFF_IGN);
- if ( ! (ROFF_PARSED & tokens[tok].flags)) {
- while (*argv) {
- if ( ! (*tree->cb.roffdata)(tree->arg, *argv++))
- return(0);
- }
- return((*tree->cb.roffout)(tree->arg, tok));
- }
+ assert(roffs[t].proc);
+ return((*roffs[t].proc)(r, t, bufp,
+ szp, ln, ppos, pos, offs));
+}
- while (*argv) {
- if (ROFF_MAX != (c = rofffindcallable(*argv))) {
- if (NULL == tokens[c].cb) {
- roff_err(tree, *argv, "unsupported "
- "macro `%s'",
- toknames[c]);
- return(0);
- }
- if ( ! (*tokens[c].cb)(c, tree, argv, ROFF_ENTER))
- return(0);
- break;
- }
- assert(tree->arg);
- if ( ! (*tree->cb.roffdata)(tree->arg, *argv++))
- return(0);
- }
+/* ARGSUSED */
+static enum rofferr
+roff_block_text(ROFF_ARGS)
+{
- return((*tree->cb.roffout)(tree->arg, tok));
+ return(ROFF_IGN);
}
/* ARGSUSED */
-static int
-roff_text(ROFFCALL_ARGS)
+static enum rofferr
+roff_cond_sub(ROFF_ARGS)
{
- int i, c, argcp[ROFF_MAXARG];
- char *v, *argvp[ROFF_MAXARG];
+ enum rofft t;
+ enum roffrule rr;
- if (ROFF_PRELUDE & tree->state) {
- roff_err(tree, *argv, "`%s' disallowed in prelude",
- toknames[tok]);
- return(0);
- }
+ ppos = pos;
+ rr = r->last->rule;
- i = 0;
- argv++;
+ roff_cond_text(r, tok, bufp, szp, ln, ppos, pos, offs);
- while (-1 != (c = roffnextopt(tree, tok, &argv, &v))) {
- if (ROFF_ARGMAX == c)
- return(0);
+ if (ROFF_MAX == (t = roff_parse(*bufp, &pos)))
+ return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
- argcp[i] = c;
- argvp[i] = v;
- i++;
- argv++;
- }
+ /*
+ * A denied conditional must evaluate its children if and only
+ * if they're either structurally required (such as loops and
+ * conditionals) or a closing macro.
+ */
+ if (ROFFRULE_DENY == rr)
+ if ( ! (ROFFMAC_STRUCT & roffs[t].flags))
+ if (ROFF_ccond != t)
+ return(ROFF_IGN);
+
+ assert(roffs[t].proc);
+ return((*roffs[t].proc)
+ (r, t, bufp, szp, ln, ppos, pos, offs));
+}
- argcp[i] = ROFF_ARGMAX;
- argvp[i] = NULL;
- if ( ! (*tree->cb.roffin)(tree->arg, tok, argcp, argvp))
- return(0);
+/* ARGSUSED */
+static enum rofferr
+roff_cond_text(ROFF_ARGS)
+{
+ char *ep, *st;
+ enum roffrule rr;
- if ( ! (ROFF_PARSED & tokens[tok].flags)) {
- while (*argv) {
- if ( ! (*tree->cb.roffdata)(tree->arg, *argv++))
- return(0);
- }
- return((*tree->cb.roffout)(tree->arg, tok));
+ rr = r->last->rule;
+
+ /*
+ * We display the value of the text if out current evaluation
+ * scope permits us to do so.
+ */
+
+ st = &(*bufp)[pos];
+ if (NULL == (ep = strstr(st, "\\}"))) {
+ roffnode_cleanscope(r);
+ return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
}
- while (*argv) {
- if (ROFF_MAX != (c = rofffindcallable(*argv))) {
- if (NULL == tokens[c].cb) {
- roff_err(tree, *argv, "unsupported "
- "macro `%s'",
- toknames[c]);
- return(0);
- }
- if ( ! (*tokens[c].cb)(c, tree,
- argv, ROFF_ENTER))
- return(0);
- break;
- }
- if ( ! (*tree->cb.roffdata)(tree->arg, *argv++))
- return(0);
+ if (ep > st && '\\' != *(ep - 1)) {
+ ep = '\0';
+ roffnode_pop(r);
}
- return((*tree->cb.roffout)(tree->arg, tok));
+ roffnode_cleanscope(r);
+ return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
}
/* ARGSUSED */
-static int
-roff_comment(ROFFCALL_ARGS)
+static enum rofferr
+roff_cond(ROFF_ARGS)
{
+ int cpos; /* position of the condition */
+ int sv;
- return(1);
-}
+ /* Stack overflow! */
+ if (ROFF_ie == tok && r->rstackpos == RSTACK_MAX - 1) {
+ (*r->msg)(MANDOCERR_MEM, r->data, ln, ppos, NULL);
+ return(ROFF_ERR);
+ }
-/* ARGSUSED */
-static int
-roff_close(ROFFCALL_ARGS)
-{
+ cpos = pos;
- return(1);
-}
+ if (ROFF_if == tok || ROFF_ie == tok) {
+ /*
+ * Read ahead past the conditional. FIXME: this does
+ * not work, as conditionals don't end on whitespace,
+ * but are parsed according to a formal grammar. It's
+ * good enough for now, however.
+ */
+ while ((*bufp)[pos] && ' ' != (*bufp)[pos])
+ pos++;
+ }
+ sv = pos;
+ while (' ' == (*bufp)[pos])
+ pos++;
-/* ARGSUSED */
-static int
-roff_special(ROFFCALL_ARGS)
-{
+ /*
+ * Roff is weird. If we have just white-space after the
+ * conditional, it's considered the BODY and we exit without
+ * really doing anything. Warn about this. It's probably
+ * wrong.
+ */
+ if ('\0' == (*bufp)[pos] && sv != pos) {
+ if ( ! (*r->msg)(MANDOCERR_NOARGS, r->data, ln, ppos, NULL))
+ return(ROFF_ERR);
+ return(ROFF_IGN);
+ }
- return((*tree->cb.roffspecial)(tree->arg, tok));
-}
+ if ( ! roffnode_push(r, tok, ln, ppos))
+ return(ROFF_ERR);
+ /* XXX: Implement more conditionals. */
-static void
-roff_warn(const struct rofftree *tree, const char *pos, char *fmt, ...)
-{
- va_list ap;
- char buf[128];
+ if (ROFF_if == tok || ROFF_ie == tok)
+ r->last->rule = 'n' == (*bufp)[cpos] ?
+ ROFFRULE_ALLOW : ROFFRULE_DENY;
+ else if (ROFF_el == tok) {
+ /*
+ * An `.el' will get the value of the current rstack
+ * entry set in prior `ie' calls or defaults to DENY.
+ */
+ if (r->rstackpos < 0)
+ r->last->rule = ROFFRULE_DENY;
+ else
+ r->last->rule = r->rstack[r->rstackpos];
+ }
+ if (ROFF_ie == tok) {
+ /*
+ * An if-else will put the NEGATION of the current
+ * evaluated conditional into the stack.
+ */
+ r->rstackpos++;
+ if (ROFFRULE_DENY == r->last->rule)
+ r->rstack[r->rstackpos] = ROFFRULE_ALLOW;
+ else
+ r->rstack[r->rstackpos] = ROFFRULE_DENY;
+ }
+ if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule)
+ r->last->rule = ROFFRULE_DENY;
+
+ r->last->endspan = 1;
+
+ if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) {
+ r->last->endspan = -1;
+ pos += 2;
+ }
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
+ /*
+ * If there are no arguments on the line, the next-line scope is
+ * assumed.
+ */
+
+ if ('\0' == (*bufp)[pos])
+ return(ROFF_IGN);
+
+ /* Otherwise re-run the roff parser after recalculating. */
- (*tree->cb.roffmsg)(tree->arg,
- ROFF_WARN, tree->cur, pos, buf);
+ *offs = pos;
+ return(ROFF_RERUN);
}
-static void
-roff_err(const struct rofftree *tree, const char *pos, char *fmt, ...)
+/* ARGSUSED */
+static enum rofferr
+roff_line(ROFF_ARGS)
{
- va_list ap;
- char buf[128];
-
- va_start(ap, fmt);
- (void)vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
- (*tree->cb.roffmsg)(tree->arg,
- ROFF_ERROR, tree->cur, pos, buf);
+ return(ROFF_IGN);
}
git.ckatri.com / mandoc.git / blobdiff