Annotation of mandoc/roff.c, Revision 1.29
1.29 ! kristaps 1: /* $Id: roff.c,v 1.28 2008/12/01 16:01:28 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <assert.h>
20: #include <ctype.h>
21: #include <err.h>
1.12 kristaps 22: #include <stdarg.h>
1.1 kristaps 23: #include <stdlib.h>
24: #include <stdio.h>
25: #include <string.h>
26: #include <time.h>
27:
28: #include "libmdocml.h"
29: #include "private.h"
30:
1.27 kristaps 31: /* TODO: warn if Pp occurs before/after Sh etc. (see mdoc.samples). */
1.6 kristaps 32:
1.27 kristaps 33: /* TODO: warn about "X section only" macros. */
1.7 kristaps 34:
1.27 kristaps 35: /* TODO: warn about empty lists. */
1.6 kristaps 36:
1.27 kristaps 37: /* TODO: (warn) some sections need specific elements. */
1.7 kristaps 38:
1.27 kristaps 39: /* TODO: (warn) NAME section has particular order. */
40:
41: /* TODO: unify empty-content tags a la <br />. */
42:
43: /* TODO: macros with a set number of arguments? */
1.11 kristaps 44:
45: #define ROFF_MAXARG 32
1.1 kristaps 46:
47: enum roffd {
48: ROFF_ENTER = 0,
49: ROFF_EXIT
50: };
51:
52: enum rofftype {
53: ROFF_COMMENT,
54: ROFF_TEXT,
1.11 kristaps 55: ROFF_LAYOUT,
56: ROFF_SPECIAL
1.1 kristaps 57: };
58:
59: #define ROFFCALL_ARGS \
1.2 kristaps 60: int tok, struct rofftree *tree, \
1.18 kristaps 61: char *argv[], enum roffd type
1.1 kristaps 62:
63: struct rofftree;
64:
65: struct rofftok {
1.5 kristaps 66: int (*cb)(ROFFCALL_ARGS); /* Callback. */
67: const int *args; /* Args (or NULL). */
1.6 kristaps 68: const int *parents;
69: const int *children;
70: int ctx;
1.5 kristaps 71: enum rofftype type; /* Type of macro. */
1.1 kristaps 72: int flags;
1.7 kristaps 73: #define ROFF_PARSED (1 << 0) /* "Parsed". */
74: #define ROFF_CALLABLE (1 << 1) /* "Callable". */
1.21 kristaps 75: #define ROFF_SHALLOW (1 << 2) /* Nesting block. */
1.27 kristaps 76: #define ROFF_LSCOPE (1 << 3)
1.1 kristaps 77: };
78:
79: struct roffarg {
80: int flags;
1.5 kristaps 81: #define ROFF_VALUE (1 << 0) /* Has a value. */
1.1 kristaps 82: };
83:
84: struct roffnode {
1.5 kristaps 85: int tok; /* Token id. */
86: struct roffnode *parent; /* Parent (or NULL). */
1.1 kristaps 87: };
88:
89: struct rofftree {
1.5 kristaps 90: struct roffnode *last; /* Last parsed node. */
1.14 kristaps 91: char *cur;
92:
1.5 kristaps 93: time_t date; /* `Dd' results. */
94: char os[64]; /* `Os' results. */
95: char title[64]; /* `Dt' results. */
96: char section[64]; /* `Dt' results. */
97: char volume[64]; /* `Dt' results. */
1.14 kristaps 98:
1.1 kristaps 99: int state;
1.5 kristaps 100: #define ROFF_PRELUDE (1 << 1) /* In roff prelude. */
101: #define ROFF_PRELUDE_Os (1 << 2) /* `Os' is parsed. */
102: #define ROFF_PRELUDE_Dt (1 << 3) /* `Dt' is parsed. */
103: #define ROFF_PRELUDE_Dd (1 << 4) /* `Dd' is parsed. */
104: #define ROFF_BODY (1 << 5) /* In roff body. */
1.14 kristaps 105:
1.15 kristaps 106: struct roffcb cb;
107: void *arg;
1.1 kristaps 108: };
109:
110: static int roff_Dd(ROFFCALL_ARGS);
111: static int roff_Dt(ROFFCALL_ARGS);
112: static int roff_Os(ROFFCALL_ARGS);
1.6 kristaps 113:
1.2 kristaps 114: static int roff_layout(ROFFCALL_ARGS);
115: static int roff_text(ROFFCALL_ARGS);
1.27 kristaps 116: static int roff_noop(ROFFCALL_ARGS);
117: static int roff_depr(ROFFCALL_ARGS);
1.1 kristaps 118:
1.4 kristaps 119: static struct roffnode *roffnode_new(int, struct rofftree *);
1.15 kristaps 120: static void roffnode_free(struct rofftree *);
1.1 kristaps 121:
1.12 kristaps 122: static void roff_warn(const struct rofftree *,
123: const char *, char *, ...);
124: static void roff_err(const struct rofftree *,
125: const char *, char *, ...);
126:
1.7 kristaps 127: static int roffscan(int, const int *);
1.1 kristaps 128: static int rofffindtok(const char *);
129: static int rofffindarg(const char *);
1.2 kristaps 130: static int rofffindcallable(const char *);
1.10 kristaps 131: static int roffargs(const struct rofftree *,
132: int, char *, char **);
1.5 kristaps 133: static int roffargok(int, int);
1.12 kristaps 134: static int roffnextopt(const struct rofftree *,
1.18 kristaps 135: int, char ***, char **);
1.27 kristaps 136: static int roffparseopts(struct rofftree *, int,
137: char ***, int *, char **);
1.17 kristaps 138: static int roffparse(struct rofftree *, char *);
139: static int textparse(const struct rofftree *, char *);
1.1 kristaps 140:
1.6 kristaps 141:
1.7 kristaps 142: static const int roffarg_An[] = { ROFF_Split, ROFF_Nosplit,
143: ROFF_ARGMAX };
144: static const int roffarg_Bd[] = { ROFF_Ragged, ROFF_Unfilled,
1.12 kristaps 145: ROFF_Literal, ROFF_File, ROFF_Offset, ROFF_Filled,
146: ROFF_Compact, ROFF_ARGMAX };
147: static const int roffarg_Bk[] = { ROFF_Words, ROFF_ARGMAX };
1.7 kristaps 148: static const int roffarg_Ex[] = { ROFF_Std, ROFF_ARGMAX };
149: static const int roffarg_Rv[] = { ROFF_Std, ROFF_ARGMAX };
150: static const int roffarg_Bl[] = { ROFF_Bullet, ROFF_Dash,
151: ROFF_Hyphen, ROFF_Item, ROFF_Enum, ROFF_Tag, ROFF_Diag,
152: ROFF_Hang, ROFF_Ohang, ROFF_Inset, ROFF_Column, ROFF_Offset,
1.12 kristaps 153: ROFF_Width, ROFF_Compact, ROFF_ARGMAX };
1.7 kristaps 154: static const int roffarg_St[] = {
155: ROFF_p1003_1_88, ROFF_p1003_1_90, ROFF_p1003_1_96,
156: ROFF_p1003_1_2001, ROFF_p1003_1_2004, ROFF_p1003_1,
157: ROFF_p1003_1b, ROFF_p1003_1b_93, ROFF_p1003_1c_95,
158: ROFF_p1003_1g_2000, ROFF_p1003_2_92, ROFF_p1387_2_95,
159: ROFF_p1003_2, ROFF_p1387_2, ROFF_isoC_90, ROFF_isoC_amd1,
160: ROFF_isoC_tcor1, ROFF_isoC_tcor2, ROFF_isoC_99, ROFF_ansiC,
161: ROFF_ansiC_89, ROFF_ansiC_99, ROFF_ieee754, ROFF_iso8802_3,
162: ROFF_xpg3, ROFF_xpg4, ROFF_xpg4_2, ROFF_xpg4_3, ROFF_xbd5,
163: ROFF_xcu5, ROFF_xsh5, ROFF_xns5, ROFF_xns5_2d2_0,
164: ROFF_xcurses4_2, ROFF_susv2, ROFF_susv3, ROFF_svid4,
165: ROFF_ARGMAX };
1.5 kristaps 166:
1.6 kristaps 167: static const int roffchild_Bl[] = { ROFF_It, ROFF_El, ROFF_MAX };
1.7 kristaps 168: static const int roffchild_Fo[] = { ROFF_Fa, ROFF_Fc, ROFF_MAX };
1.9 kristaps 169: static const int roffchild_Rs[] = { ROFF_Re, ROFF__A, ROFF__B,
170: ROFF__D, ROFF__I, ROFF__J, ROFF__N, ROFF__O, ROFF__P,
171: ROFF__R, ROFF__T, ROFF__V, ROFF_MAX };
1.6 kristaps 172:
173: static const int roffparent_El[] = { ROFF_Bl, ROFF_It, ROFF_MAX };
1.7 kristaps 174: static const int roffparent_Fc[] = { ROFF_Fo, ROFF_Fa, ROFF_MAX };
1.29 ! kristaps 175: static const int roffparent_Oc[] = { ROFF_Oo, ROFF_MAX };
1.8 kristaps 176: static const int roffparent_It[] = { ROFF_Bl, ROFF_It, ROFF_MAX };
1.9 kristaps 177: static const int roffparent_Re[] = { ROFF_Rs, ROFF_MAX };
1.1 kristaps 178:
1.5 kristaps 179: /* Table of all known tokens. */
1.14 kristaps 180: static const struct rofftok tokens[ROFF_MAX] = {
1.27 kristaps 181: { roff_noop, NULL, NULL, NULL, 0, ROFF_COMMENT, 0 }, /* \" */
1.10 kristaps 182: { roff_Dd, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dd */
183: { roff_Dt, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Dt */
1.21 kristaps 184: { roff_Os, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Os */
185: { roff_layout, NULL, NULL, NULL, ROFF_Sh, ROFF_LAYOUT, 0 }, /* Sh */
186: { roff_layout, NULL, NULL, NULL, ROFF_Ss, ROFF_LAYOUT, 0 }, /* Ss */
1.27 kristaps 187: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Pp */ /* XXX 0 args */
188: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_LSCOPE }, /* D1 */
189: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_LSCOPE }, /* Dl */
1.12 kristaps 190: { roff_layout, roffarg_Bd, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bd */
1.27 kristaps 191: { roff_noop, NULL, NULL, NULL, ROFF_Bd, ROFF_LAYOUT, 0 }, /* Ed */
1.7 kristaps 192: { roff_layout, roffarg_Bl, NULL, roffchild_Bl, 0, ROFF_LAYOUT, 0 }, /* Bl */
1.27 kristaps 193: { roff_noop, NULL, roffparent_El, NULL, ROFF_Bl, ROFF_LAYOUT, 0 }, /* El */
1.21 kristaps 194: { roff_layout, NULL, roffparent_It, NULL, ROFF_It, ROFF_LAYOUT, ROFF_PARSED | ROFF_SHALLOW }, /* It */
1.20 kristaps 195: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ad */ /* FIXME */
196: { roff_text, roffarg_An, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* An */
197: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ar */
1.21 kristaps 198: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Cd */ /* XXX man.4 only */
1.7 kristaps 199: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Cm */
1.20 kristaps 200: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dv */ /* XXX needs arg */
201: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Er */ /* XXX needs arg */
202: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ev */ /* XXX needs arg */
1.7 kristaps 203: { roff_text, roffarg_Ex, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ex */
1.20 kristaps 204: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Fa */ /* XXX needs arg */
1.10 kristaps 205: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Fd */
1.20 kristaps 206: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Fl */
207: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Fn */ /* XXX needs arg */ /* FIXME */
208: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ft */
209: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ic */ /* XXX needs arg */
1.10 kristaps 210: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* In */
1.20 kristaps 211: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Li */
1.21 kristaps 212: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Nd */
1.20 kristaps 213: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Nm */ /* FIXME */
1.27 kristaps 214: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Op */
215: { roff_depr, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ot */
1.20 kristaps 216: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pa */
1.10 kristaps 217: { roff_text, roffarg_Rv, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Rv */
1.7 kristaps 218: { roff_text, roffarg_St, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* St */
1.20 kristaps 219: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Va */
220: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Vt */ /* XXX needs arg */
221: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xr */ /* XXX needs arg */
1.9 kristaps 222: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* %A */
223: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %B */
1.10 kristaps 224: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %D */
1.9 kristaps 225: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %I */
226: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE}, /* %J */
1.10 kristaps 227: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %N */
228: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %O */
229: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %P */
230: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %R */
1.9 kristaps 231: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* %T */
1.10 kristaps 232: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* %V */
233: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ac */
234: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ao */
1.27 kristaps 235: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Aq */
1.10 kristaps 236: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* At */ /* XXX at most 2 args */
237: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bc */
1.28 kristaps 238: { roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bf */ /* FIXME */
1.10 kristaps 239: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Bo */
1.27 kristaps 240: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Bq */
1.20 kristaps 241: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Bsx */
242: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Bx */
1.26 kristaps 243: { NULL, NULL, NULL, NULL, 0, ROFF_SPECIAL, 0 }, /* Db */
1.10 kristaps 244: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Dc */
245: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Do */
1.27 kristaps 246: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Dq */
1.10 kristaps 247: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ec */
1.28 kristaps 248: { roff_noop, NULL, NULL, NULL, ROFF_Bf, ROFF_LAYOUT, 0 }, /* Ef */
1.20 kristaps 249: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Em */ /* XXX needs arg */
1.10 kristaps 250: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Eo */
1.20 kristaps 251: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Fx */
252: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ms */
1.6 kristaps 253: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* No */
1.26 kristaps 254: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ns */
1.20 kristaps 255: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Nx */
256: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ox */
1.10 kristaps 257: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Pc */
1.26 kristaps 258: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Pf */
1.28 kristaps 259: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Po */
1.27 kristaps 260: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Pq */
1.10 kristaps 261: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qc */
1.8 kristaps 262: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Ql */
1.27 kristaps 263: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Qo */
264: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Qq */
265: { roff_noop, NULL, roffparent_Re, NULL, ROFF_Rs, ROFF_LAYOUT, 0 }, /* Re */
1.9 kristaps 266: { roff_layout, NULL, NULL, roffchild_Rs, 0, ROFF_LAYOUT, 0 }, /* Rs */
1.10 kristaps 267: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sc */
268: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* So */
1.27 kristaps 269: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE | ROFF_LSCOPE }, /* Sq */
1.26 kristaps 270: { NULL, NULL, NULL, NULL, 0, ROFF_SPECIAL, 0 }, /* Sm */
1.8 kristaps 271: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sx */
1.20 kristaps 272: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Sy */
273: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Tn */
274: { roff_text, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED }, /* Ux */
1.6 kristaps 275: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xc */
276: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, ROFF_PARSED | ROFF_CALLABLE }, /* Xo */
1.14 kristaps 277: { roff_layout, NULL, NULL, roffchild_Fo, 0, ROFF_LAYOUT, 0 }, /* Fo */
1.27 kristaps 278: { roff_noop, NULL, roffparent_Fc, NULL, ROFF_Fo, ROFF_LAYOUT, 0 }, /* Fc */
1.29 ! kristaps 279: { roff_layout, NULL, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Oo */
1.27 kristaps 280: { roff_noop, NULL, roffparent_Oc, NULL, ROFF_Oo, ROFF_LAYOUT, 0 }, /* Oc */
1.12 kristaps 281: { roff_layout, roffarg_Bk, NULL, NULL, 0, ROFF_LAYOUT, 0 }, /* Bk */
1.27 kristaps 282: { roff_noop, NULL, NULL, NULL, ROFF_Bk, ROFF_LAYOUT, 0 }, /* Ek */
283: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Bt */
284: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Hf */
285: { roff_depr, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Fr */
286: { NULL, NULL, NULL, NULL, 0, ROFF_TEXT, 0 }, /* Ud */
1.12 kristaps 287: };
1.1 kristaps 288:
1.5 kristaps 289: /* Table of all known token arguments. */
1.14 kristaps 290: static const int tokenargs[ROFF_ARGMAX] = {
1.12 kristaps 291: 0, 0, 0, 0,
292: 0, ROFF_VALUE, ROFF_VALUE, 0,
293: 0, 0, 0, 0,
294: 0, 0, 0, 0,
1.18 kristaps 295: 0, 0, ROFF_VALUE, 0,
1.12 kristaps 296: 0, 0, 0, 0,
297: 0, 0, 0, 0,
298: 0, 0, 0, 0,
299: 0, 0, 0, 0,
300: 0, 0, 0, 0,
301: 0, 0, 0, 0,
302: 0, 0, 0, 0,
303: 0, 0, 0, 0,
304: 0, 0, 0, 0,
305: 0, 0, 0, 0,
306: };
1.1 kristaps 307:
1.14 kristaps 308: const char *const toknamesp[ROFF_MAX] = {
1.8 kristaps 309: "\\\"", "Dd", "Dt", "Os",
310: "Sh", "Ss", "Pp", "D1",
311: "Dl", "Bd", "Ed", "Bl",
312: "El", "It", "Ad", "An",
313: "Ar", "Cd", "Cm", "Dv",
314: "Er", "Ev", "Ex", "Fa",
315: "Fd", "Fl", "Fn", "Ft",
316: "Ic", "In", "Li", "Nd",
317: "Nm", "Op", "Ot", "Pa",
318: "Rv", "St", "Va", "Vt",
1.23 kristaps 319: /* LINTED */
1.8 kristaps 320: "Xr", "\%A", "\%B", "\%D",
1.23 kristaps 321: /* LINTED */
1.8 kristaps 322: "\%I", "\%J", "\%N", "\%O",
1.23 kristaps 323: /* LINTED */
1.8 kristaps 324: "\%P", "\%R", "\%T", "\%V",
325: "Ac", "Ao", "Aq", "At",
326: "Bc", "Bf", "Bo", "Bq",
327: "Bsx", "Bx", "Db", "Dc",
328: "Do", "Dq", "Ec", "Ef",
329: "Em", "Eo", "Fx", "Ms",
330: "No", "Ns", "Nx", "Ox",
331: "Pc", "Pf", "Po", "Pq",
332: "Qc", "Ql", "Qo", "Qq",
333: "Re", "Rs", "Sc", "So",
334: "Sq", "Sm", "Sx", "Sy",
335: "Tn", "Ux", "Xc", "Xo",
1.9 kristaps 336: "Fo", "Fc", "Oo", "Oc",
1.27 kristaps 337: "Bk", "Ek", "Bt", "Hf",
338: "Fr", "Ud",
1.5 kristaps 339: };
340:
1.14 kristaps 341: const char *const tokargnamesp[ROFF_ARGMAX] = {
1.9 kristaps 342: "split", "nosplit", "ragged",
343: "unfilled", "literal", "file",
344: "offset", "bullet", "dash",
345: "hyphen", "item", "enum",
346: "tag", "diag", "hang",
347: "ohang", "inset", "column",
348: "width", "compact", "std",
349: "p1003.1-88", "p1003.1-90", "p1003.1-96",
350: "p1003.1-2001", "p1003.1-2004", "p1003.1",
351: "p1003.1b", "p1003.1b-93", "p1003.1c-95",
352: "p1003.1g-2000", "p1003.2-92", "p1387.2-95",
353: "p1003.2", "p1387.2", "isoC-90",
354: "isoC-amd1", "isoC-tcor1", "isoC-tcor2",
355: "isoC-99", "ansiC", "ansiC-89",
356: "ansiC-99", "ieee754", "iso8802-3",
357: "xpg3", "xpg4", "xpg4.2",
358: "xpg4.3", "xbd5", "xcu5",
359: "xsh5", "xns5", "xns5.2d2.0",
360: "xcurses4.2", "susv2", "susv3",
1.12 kristaps 361: "svid4", "filled", "words",
1.5 kristaps 362: };
363:
364: const char *const *toknames = toknamesp;
365: const char *const *tokargnames = tokargnamesp;
1.4 kristaps 366:
1.1 kristaps 367:
368: int
369: roff_free(struct rofftree *tree, int flush)
370: {
1.16 kristaps 371: int error, t;
1.15 kristaps 372: struct roffnode *n;
1.1 kristaps 373:
1.17 kristaps 374: error = 0;
375:
1.16 kristaps 376: if ( ! flush)
377: goto end;
1.1 kristaps 378:
1.16 kristaps 379: error = 1;
1.1 kristaps 380:
1.16 kristaps 381: if (ROFF_PRELUDE & tree->state) {
1.28 kristaps 382: roff_err(tree, NULL, "prelude never finished");
1.16 kristaps 383: goto end;
384: }
385:
1.28 kristaps 386: for (n = tree->last; n; n = n->parent) {
1.16 kristaps 387: if (0 != tokens[n->tok].ctx)
1.17 kristaps 388: continue;
1.28 kristaps 389: roff_err(tree, NULL, "closing explicit scope `%s'",
1.16 kristaps 390: toknames[n->tok]);
391: goto end;
392: }
393:
394: while (tree->last) {
395: t = tree->last->tok;
396: if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
397: goto end;
1.1 kristaps 398: }
399:
1.16 kristaps 400: error = 0;
401:
402: end:
403:
1.15 kristaps 404: while (tree->last)
405: roffnode_free(tree);
406:
1.1 kristaps 407: free(tree);
1.17 kristaps 408:
1.1 kristaps 409: return(error ? 0 : 1);
410: }
411:
412:
413: struct rofftree *
1.15 kristaps 414: roff_alloc(const struct roffcb *cb, void *args)
1.1 kristaps 415: {
416: struct rofftree *tree;
417:
1.17 kristaps 418: assert(args);
419: assert(cb);
420:
1.12 kristaps 421: if (NULL == (tree = calloc(1, sizeof(struct rofftree))))
422: err(1, "calloc");
1.1 kristaps 423:
424: tree->state = ROFF_PRELUDE;
1.15 kristaps 425: tree->arg = args;
426:
427: (void)memcpy(&tree->cb, cb, sizeof(struct roffcb));
1.1 kristaps 428:
429: return(tree);
430: }
431:
432:
433: int
1.17 kristaps 434: roff_engine(struct rofftree *tree, char *buf)
1.1 kristaps 435: {
436:
1.17 kristaps 437: tree->cur = buf;
438: assert(buf);
1.12 kristaps 439:
1.17 kristaps 440: if (0 == *buf) {
1.29 ! kristaps 441: roff_err(tree, buf, "blank line");
1.1 kristaps 442: return(0);
443: } else if ('.' != *buf)
1.17 kristaps 444: return(textparse(tree, buf));
1.1 kristaps 445:
1.17 kristaps 446: return(roffparse(tree, buf));
1.1 kristaps 447: }
448:
449:
450: static int
1.17 kristaps 451: textparse(const struct rofftree *tree, char *buf)
1.1 kristaps 452: {
1.17 kristaps 453:
1.21 kristaps 454: return((*tree->cb.roffdata)(tree->arg, 1, buf));
1.1 kristaps 455: }
456:
457:
458: static int
1.10 kristaps 459: roffargs(const struct rofftree *tree,
460: int tok, char *buf, char **argv)
1.1 kristaps 461: {
462: int i;
1.12 kristaps 463: char *p;
1.1 kristaps 464:
465: assert(tok >= 0 && tok < ROFF_MAX);
466: assert('.' == *buf);
467:
1.12 kristaps 468: p = buf;
469:
1.1 kristaps 470: /* LINTED */
471: for (i = 0; *buf && i < ROFF_MAXARG; i++) {
1.10 kristaps 472: if ('\"' == *buf) {
473: argv[i] = ++buf;
474: while (*buf && '\"' != *buf)
475: buf++;
476: if (0 == *buf) {
1.13 kristaps 477: roff_err(tree, argv[i], "unclosed "
1.12 kristaps 478: "quote in argument "
479: "list for `%s'",
480: toknames[tok]);
1.10 kristaps 481: return(0);
482: }
483: } else {
484: argv[i] = buf++;
485: while (*buf && ! isspace(*buf))
486: buf++;
487: if (0 == *buf)
488: continue;
1.1 kristaps 489: }
490: *buf++ = 0;
491: while (*buf && isspace(*buf))
492: buf++;
493: }
494:
495: assert(i > 0);
1.10 kristaps 496: if (ROFF_MAXARG == i && *buf) {
1.13 kristaps 497: roff_err(tree, p, "too many arguments for `%s'", toknames
1.12 kristaps 498: [tok]);
1.10 kristaps 499: return(0);
500: }
501:
502: argv[i] = NULL;
503: return(1);
1.1 kristaps 504: }
505:
506:
1.6 kristaps 507: static int
508: roffscan(int tok, const int *tokv)
509: {
1.7 kristaps 510:
1.6 kristaps 511: if (NULL == tokv)
512: return(1);
513:
1.7 kristaps 514: for ( ; ROFF_MAX != *tokv; tokv++)
1.6 kristaps 515: if (tok == *tokv)
516: return(1);
517:
518: return(0);
519: }
520:
521:
1.1 kristaps 522: static int
1.17 kristaps 523: roffparse(struct rofftree *tree, char *buf)
1.1 kristaps 524: {
525: int tok, t;
1.6 kristaps 526: struct roffnode *n;
1.1 kristaps 527: char *argv[ROFF_MAXARG];
1.18 kristaps 528: char **argvp;
1.1 kristaps 529:
1.25 kristaps 530: if (0 != *buf && 0 != *(buf + 1) && 0 != *(buf + 2))
531: if (0 == strncmp(buf, ".\\\"", 3))
532: return(1);
533:
1.6 kristaps 534: if (ROFF_MAX == (tok = rofffindtok(buf + 1))) {
1.12 kristaps 535: roff_err(tree, buf + 1, "bogus line macro");
1.6 kristaps 536: return(0);
537: } else if (NULL == tokens[tok].cb) {
1.12 kristaps 538: roff_err(tree, buf + 1, "unsupported macro `%s'",
539: toknames[tok]);
1.1 kristaps 540: return(0);
1.25 kristaps 541: }
542:
543: assert(ROFF___ != tok);
1.10 kristaps 544: if ( ! roffargs(tree, tok, buf, argv))
1.1 kristaps 545: return(0);
1.12 kristaps 546:
1.18 kristaps 547: argvp = (char **)argv;
1.6 kristaps 548:
549: /*
1.12 kristaps 550: * Prelude macros break some assumptions, so branch now.
1.6 kristaps 551: */
1.1 kristaps 552:
1.6 kristaps 553: if (ROFF_PRELUDE & tree->state) {
554: assert(NULL == tree->last);
555: return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
1.28 kristaps 556: }
1.6 kristaps 557:
558: assert(ROFF_BODY & tree->state);
559:
560: /*
561: * First check that our possible parents and parent's possible
562: * children are satisfied.
563: */
564:
1.28 kristaps 565: if (tree->last && ! roffscan
566: (tree->last->tok, tokens[tok].parents)) {
1.15 kristaps 567: roff_err(tree, *argvp, "`%s' has invalid parent `%s'",
568: toknames[tok],
569: toknames[tree->last->tok]);
1.6 kristaps 570: return(0);
571: }
572:
1.28 kristaps 573: if (tree->last && ! roffscan
574: (tok, tokens[tree->last->tok].children)) {
1.18 kristaps 575: roff_err(tree, *argvp, "`%s' is invalid child of `%s'",
576: toknames[tok],
577: toknames[tree->last->tok]);
1.1 kristaps 578: return(0);
579: }
580:
581: /*
1.6 kristaps 582: * Branch if we're not a layout token.
1.1 kristaps 583: */
584:
1.6 kristaps 585: if (ROFF_LAYOUT != tokens[tok].type)
586: return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
587: if (0 == tokens[tok].ctx)
588: return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
1.1 kristaps 589:
1.12 kristaps 590: /*
591: * First consider implicit-end tags, like as follows:
592: * .Sh SECTION 1
593: * .Sh SECTION 2
594: * In this, we want to close the scope of the NAME section. If
595: * there's an intermediary implicit-end tag, such as
596: * .Sh SECTION 1
597: * .Ss Subsection 1
598: * .Sh SECTION 2
599: * then it must be closed as well.
600: */
601:
1.6 kristaps 602: if (tok == tokens[tok].ctx) {
1.12 kristaps 603: /*
604: * First search up to the point where we must close.
605: * If one doesn't exist, then we can open a new scope.
606: */
607:
1.6 kristaps 608: for (n = tree->last; n; n = n->parent) {
609: assert(0 == tokens[n->tok].ctx ||
610: n->tok == tokens[n->tok].ctx);
611: if (n->tok == tok)
612: break;
1.10 kristaps 613: if (ROFF_SHALLOW & tokens[tok].flags) {
614: n = NULL;
615: break;
616: }
1.28 kristaps 617: if (tokens[n->tok].ctx == n->tok)
618: continue;
619: roff_err(tree, *argv, "`%s' breaks `%s' scope",
620: toknames[tok], toknames[n->tok]);
621: return(0);
1.6 kristaps 622: }
1.10 kristaps 623:
624: /*
625: * Create a new scope, as no previous one exists to
626: * close out.
627: */
1.12 kristaps 628:
629: if (NULL == n)
1.6 kristaps 630: return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
1.10 kristaps 631:
632: /*
1.12 kristaps 633: * Close out all intermediary scoped blocks, then hang
634: * the current scope from our predecessor's parent.
1.10 kristaps 635: */
636:
1.1 kristaps 637: do {
638: t = tree->last->tok;
1.6 kristaps 639: if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
1.1 kristaps 640: return(0);
641: } while (t != tok);
1.6 kristaps 642:
643: return((*tokens[tok].cb)(tok, tree, argvp, ROFF_ENTER));
1.1 kristaps 644: }
645:
1.12 kristaps 646: /*
647: * Now consider explicit-end tags, where we want to close back
648: * to a specific tag. Example:
649: * .Bl
650: * .It Item.
651: * .El
652: * In this, the `El' tag closes out the scope of `Bl'.
653: */
654:
1.6 kristaps 655: assert(tok != tokens[tok].ctx && 0 != tokens[tok].ctx);
656:
1.28 kristaps 657: for (n = tree->last; n; n = n->parent)
658: if (n->tok != tokens[tok].ctx) {
659: if (n->tok == tokens[n->tok].ctx)
660: continue;
661: roff_err(tree, *argv, "`%s' breaks `%s' scope",
662: toknames[tok], toknames[n->tok]);
663: return(0);
664: } else
665: break;
666:
667:
668: if (NULL == n) {
669: roff_err(tree, *argv, "`%s' has no starting tag `%s'",
670: toknames[tok],
671: toknames[tokens[tok].ctx]);
672: return(0);
673: }
674:
1.14 kristaps 675: /* LINTED */
1.6 kristaps 676: do {
677: t = tree->last->tok;
678: if ( ! (*tokens[t].cb)(t, tree, NULL, ROFF_EXIT))
679: return(0);
680: } while (t != tokens[tok].ctx);
1.1 kristaps 681:
1.9 kristaps 682: return(1);
1.1 kristaps 683: }
684:
685:
686: static int
687: rofffindarg(const char *name)
688: {
689: size_t i;
690:
691: /* FIXME: use a table, this is slow but ok for now. */
692:
693: /* LINTED */
694: for (i = 0; i < ROFF_ARGMAX; i++)
695: /* LINTED */
1.4 kristaps 696: if (0 == strcmp(name, tokargnames[i]))
1.1 kristaps 697: return((int)i);
698:
699: return(ROFF_ARGMAX);
700: }
701:
702:
703: static int
1.6 kristaps 704: rofffindtok(const char *buf)
1.1 kristaps 705: {
1.6 kristaps 706: char token[4];
1.23 kristaps 707: int i;
1.1 kristaps 708:
1.6 kristaps 709: for (i = 0; *buf && ! isspace(*buf) && i < 3; i++, buf++)
710: token[i] = *buf;
711:
1.9 kristaps 712: if (i == 3)
1.6 kristaps 713: return(ROFF_MAX);
714:
715: token[i] = 0;
716:
1.1 kristaps 717: /* FIXME: use a table, this is slow but ok for now. */
718:
719: /* LINTED */
720: for (i = 0; i < ROFF_MAX; i++)
721: /* LINTED */
1.12 kristaps 722: if (0 == strcmp(toknames[i], token))
1.1 kristaps 723: return((int)i);
1.7 kristaps 724:
1.1 kristaps 725: return(ROFF_MAX);
726: }
727:
728:
1.20 kristaps 729: static int
730: roffispunct(const char *p)
731: {
732:
733: if (0 == *p)
734: return(0);
735: if (0 != *(p + 1))
736: return(0);
737:
738: switch (*p) {
739: case('{'):
740: /* FALLTHROUGH */
741: case('.'):
742: /* FALLTHROUGH */
743: case(','):
744: /* FALLTHROUGH */
745: case(';'):
746: /* FALLTHROUGH */
747: case(':'):
748: /* FALLTHROUGH */
749: case('?'):
750: /* FALLTHROUGH */
751: case('!'):
752: /* FALLTHROUGH */
753: case('('):
754: /* FALLTHROUGH */
755: case(')'):
756: /* FALLTHROUGH */
757: case('['):
758: /* FALLTHROUGH */
759: case(']'):
760: /* FALLTHROUGH */
761: case('}'):
762: return(1);
763: default:
764: break;
765: }
766:
767: return(0);
768: }
769:
770:
1.2 kristaps 771: static int
772: rofffindcallable(const char *name)
773: {
774: int c;
775:
776: if (ROFF_MAX == (c = rofffindtok(name)))
777: return(ROFF_MAX);
1.8 kristaps 778: assert(c >= 0 && c < ROFF_MAX);
1.2 kristaps 779: return(ROFF_CALLABLE & tokens[c].flags ? c : ROFF_MAX);
780: }
781:
782:
1.1 kristaps 783: static struct roffnode *
1.4 kristaps 784: roffnode_new(int tokid, struct rofftree *tree)
1.1 kristaps 785: {
786: struct roffnode *p;
787:
1.12 kristaps 788: if (NULL == (p = malloc(sizeof(struct roffnode))))
789: err(1, "malloc");
1.1 kristaps 790:
791: p->tok = tokid;
792: p->parent = tree->last;
793: tree->last = p;
1.9 kristaps 794:
1.1 kristaps 795: return(p);
796: }
797:
798:
1.5 kristaps 799: static int
800: roffargok(int tokid, int argid)
801: {
802: const int *c;
803:
804: if (NULL == (c = tokens[tokid].args))
805: return(0);
806:
807: for ( ; ROFF_ARGMAX != *c; c++)
808: if (argid == *c)
809: return(1);
810:
811: return(0);
812: }
813:
814:
1.1 kristaps 815: static void
1.15 kristaps 816: roffnode_free(struct rofftree *tree)
1.1 kristaps 817: {
818: struct roffnode *p;
819:
820: assert(tree->last);
821:
822: p = tree->last;
823: tree->last = tree->last->parent;
824: free(p);
825: }
826:
827:
1.6 kristaps 828: static int
1.12 kristaps 829: roffnextopt(const struct rofftree *tree, int tok,
1.18 kristaps 830: char ***in, char **val)
1.6 kristaps 831: {
1.18 kristaps 832: char *arg, **argv;
1.6 kristaps 833: int v;
834:
835: *val = NULL;
836: argv = *in;
837: assert(argv);
838:
839: if (NULL == (arg = *argv))
840: return(-1);
841: if ('-' != *arg)
842: return(-1);
843:
1.12 kristaps 844: if (ROFF_ARGMAX == (v = rofffindarg(arg + 1))) {
845: roff_warn(tree, arg, "argument-like parameter `%s' to "
846: "`%s'", &arg[1], toknames[tok]);
1.6 kristaps 847: return(-1);
1.12 kristaps 848: }
849:
850: if ( ! roffargok(tok, v)) {
851: roff_warn(tree, arg, "invalid argument parameter `%s' to "
852: "`%s'", tokargnames[v], toknames[tok]);
1.6 kristaps 853: return(-1);
1.12 kristaps 854: }
855:
856: if ( ! (ROFF_VALUE & tokenargs[v]))
1.6 kristaps 857: return(v);
858:
859: *in = ++argv;
860:
1.12 kristaps 861: if (NULL == *argv) {
862: roff_err(tree, arg, "empty value of `%s' for `%s'",
863: tokargnames[v], toknames[tok]);
864: return(ROFF_ARGMAX);
865: }
1.6 kristaps 866:
1.12 kristaps 867: return(v);
1.6 kristaps 868: }
869:
870:
1.27 kristaps 871: static int
872: roffparseopts(struct rofftree *tree, int tok,
873: char ***args, int *argc, char **argv)
874: {
875: int i, c;
876: char *v;
877:
878: i = 0;
879:
880: while (-1 != (c = roffnextopt(tree, tok, args, &v))) {
881: if (ROFF_ARGMAX == c)
882: return(0);
883:
884: argc[i] = c;
885: argv[i] = v;
886: i++;
887: *args = *args + 1;
888: }
889:
890: argc[i] = ROFF_ARGMAX;
891: argv[i] = NULL;
892: return(1);
893: }
894:
895:
1.1 kristaps 896: /* ARGSUSED */
897: static int
898: roff_Dd(ROFFCALL_ARGS)
899: {
900:
1.4 kristaps 901: if (ROFF_BODY & tree->state) {
902: assert( ! (ROFF_PRELUDE & tree->state));
903: assert(ROFF_PRELUDE_Dd & tree->state);
904: return(roff_text(tok, tree, argv, type));
905: }
906:
1.1 kristaps 907: assert(ROFF_PRELUDE & tree->state);
1.4 kristaps 908: assert( ! (ROFF_BODY & tree->state));
909:
1.6 kristaps 910: if (ROFF_PRELUDE_Dd & tree->state) {
1.12 kristaps 911: roff_err(tree, *argv, "repeated `Dd' in prelude");
1.6 kristaps 912: return(0);
913: } else if (ROFF_PRELUDE_Dt & tree->state) {
1.12 kristaps 914: roff_err(tree, *argv, "out-of-order `Dd' in prelude");
1.1 kristaps 915: return(0);
916: }
917:
1.4 kristaps 918: /* TODO: parse date. */
919:
1.1 kristaps 920: assert(NULL == tree->last);
921: tree->state |= ROFF_PRELUDE_Dd;
922:
923: return(1);
924: }
925:
926:
927: /* ARGSUSED */
928: static int
929: roff_Dt(ROFFCALL_ARGS)
930: {
931:
1.4 kristaps 932: if (ROFF_BODY & tree->state) {
933: assert( ! (ROFF_PRELUDE & tree->state));
934: assert(ROFF_PRELUDE_Dt & tree->state);
935: return(roff_text(tok, tree, argv, type));
936: }
937:
1.1 kristaps 938: assert(ROFF_PRELUDE & tree->state);
1.4 kristaps 939: assert( ! (ROFF_BODY & tree->state));
940:
1.6 kristaps 941: if ( ! (ROFF_PRELUDE_Dd & tree->state)) {
1.12 kristaps 942: roff_err(tree, *argv, "out-of-order `Dt' in prelude");
1.1 kristaps 943: return(0);
1.6 kristaps 944: } else if (ROFF_PRELUDE_Dt & tree->state) {
1.12 kristaps 945: roff_err(tree, *argv, "repeated `Dt' in prelude");
1.6 kristaps 946: return(0);
1.1 kristaps 947: }
948:
1.4 kristaps 949: /* TODO: parse date. */
950:
1.1 kristaps 951: assert(NULL == tree->last);
952: tree->state |= ROFF_PRELUDE_Dt;
953:
954: return(1);
955: }
956:
957:
958: /* ARGSUSED */
959: static int
960: roff_Os(ROFFCALL_ARGS)
961: {
962:
963: if (ROFF_EXIT == type) {
1.18 kristaps 964: return((*tree->cb.rofftail)(tree->arg));
1.4 kristaps 965: } else if (ROFF_BODY & tree->state) {
966: assert( ! (ROFF_PRELUDE & tree->state));
967: assert(ROFF_PRELUDE_Os & tree->state);
968: return(roff_text(tok, tree, argv, type));
969: }
1.1 kristaps 970:
971: assert(ROFF_PRELUDE & tree->state);
972: if ( ! (ROFF_PRELUDE_Dt & tree->state) ||
973: ! (ROFF_PRELUDE_Dd & tree->state)) {
1.12 kristaps 974: roff_err(tree, *argv, "out-of-order `Os' in prelude");
1.1 kristaps 975: return(0);
976: }
977:
1.4 kristaps 978: /* TODO: extract OS. */
1.1 kristaps 979:
980: tree->state |= ROFF_PRELUDE_Os;
981: tree->state &= ~ROFF_PRELUDE;
982: tree->state |= ROFF_BODY;
983:
1.4 kristaps 984: assert(NULL == tree->last);
985:
1.18 kristaps 986: return((*tree->cb.roffhead)(tree->arg));
1.1 kristaps 987: }
988:
989:
990: /* ARGSUSED */
991: static int
1.2 kristaps 992: roff_layout(ROFFCALL_ARGS)
1.1 kristaps 993: {
1.2 kristaps 994: int i, c, argcp[ROFF_MAXARG];
1.27 kristaps 995: char *argvp[ROFF_MAXARG];
1.1 kristaps 996:
1.4 kristaps 997: if (ROFF_PRELUDE & tree->state) {
1.27 kristaps 998: roff_err(tree, *argv, "bad `%s' in prelude",
1.12 kristaps 999: toknames[tok]);
1.4 kristaps 1000: return(0);
1.27 kristaps 1001: } else if (ROFF_EXIT == type) {
1.15 kristaps 1002: roffnode_free(tree);
1003: return((*tree->cb.roffblkout)(tree->arg, tok));
1.2 kristaps 1004: }
1.1 kristaps 1005:
1.27 kristaps 1006: assert( ! (ROFF_CALLABLE & tokens[tok].flags));
1.5 kristaps 1007:
1.27 kristaps 1008: ++argv;
1.5 kristaps 1009:
1.27 kristaps 1010: if ( ! roffparseopts(tree, tok, &argv, argcp, argvp))
1011: return(0);
1.4 kristaps 1012: if (NULL == roffnode_new(tok, tree))
1.2 kristaps 1013: return(0);
1014:
1.27 kristaps 1015: /*
1016: * Layouts have two parts: the layout body and header. The
1017: * layout header is the trailing text of the line macro, while
1018: * the layout body is everything following until termination.
1019: */
1020:
1.18 kristaps 1021: if ( ! (*tree->cb.roffblkin)(tree->arg, tok, argcp, argvp))
1022: return(0);
1023: if (NULL == *argv)
1024: return(1);
1.24 kristaps 1025: if ( ! (*tree->cb.roffin)(tree->arg, tok, argcp, argvp))
1.2 kristaps 1026: return(0);
1027:
1.27 kristaps 1028: /*
1029: * If there are no parsable parts, then write remaining tokens
1030: * into the layout header and exit.
1031: */
1032:
1.2 kristaps 1033: if ( ! (ROFF_PARSED & tokens[tok].flags)) {
1.21 kristaps 1034: i = 0;
1.14 kristaps 1035: while (*argv) {
1.21 kristaps 1036: if ( ! (*tree->cb.roffdata)(tree->arg, i, *argv++))
1.14 kristaps 1037: return(0);
1.21 kristaps 1038: i = 1;
1.14 kristaps 1039: }
1.18 kristaps 1040: return((*tree->cb.roffout)(tree->arg, tok));
1.2 kristaps 1041: }
1042:
1.27 kristaps 1043: /*
1044: * Parsable elements may be in the header (or be the header, for
1045: * that matter). Follow the regular parsing rules for these.
1046: */
1047:
1.21 kristaps 1048: i = 0;
1.1 kristaps 1049: while (*argv) {
1.26 kristaps 1050: if (ROFF_MAX == (c = rofffindcallable(*argv))) {
1051: assert(tree->arg);
1052: if ( ! (*tree->cb.roffdata)
1053: (tree->arg, i, *argv++))
1.8 kristaps 1054: return(0);
1.26 kristaps 1055: i = 1;
1056: continue;
1057: }
1058:
1059: if (NULL == tokens[c].cb) {
1060: roff_err(tree, *argv, "unsupported macro `%s'",
1061: toknames[c]);
1062: return(0);
1.8 kristaps 1063: }
1.12 kristaps 1064:
1.26 kristaps 1065: if ( ! (*tokens[c].cb)(c, tree, argv, ROFF_ENTER))
1.14 kristaps 1066: return(0);
1.26 kristaps 1067:
1068: break;
1.21 kristaps 1069: }
1070:
1071: /*
1.27 kristaps 1072: * If there's trailing punctuation in the header, then write it
1073: * out now. Here we mimic the behaviour of a line-dominant text
1074: * macro.
1.21 kristaps 1075: */
1076:
1.27 kristaps 1077: if (NULL == *argv)
1.26 kristaps 1078: return((*tree->cb.roffout)(tree->arg, tok));
1.21 kristaps 1079:
1.27 kristaps 1080: /*
1081: * Expensive. Scan to the end of line then work backwards until
1082: * a token isn't punctuation.
1083: */
1084:
1.26 kristaps 1085: i = 0;
1086: while (argv[i])
1087: i++;
1.21 kristaps 1088:
1.26 kristaps 1089: assert(i > 0);
1090: if ( ! roffispunct(argv[--i]))
1091: return((*tree->cb.roffout)(tree->arg, tok));
1092:
1093: while (i >= 0 && roffispunct(argv[i]))
1094: i--;
1.21 kristaps 1095:
1.26 kristaps 1096: assert(0 != i);
1097: i++;
1.21 kristaps 1098:
1.26 kristaps 1099: /* LINTED */
1100: while (argv[i])
1101: if ( ! (*tree->cb.roffdata)(tree->arg, 0, argv[i++]))
1102: return(0);
1.12 kristaps 1103:
1.18 kristaps 1104: return((*tree->cb.roffout)(tree->arg, tok));
1.2 kristaps 1105: }
1106:
1107:
1108: /* ARGSUSED */
1109: static int
1110: roff_text(ROFFCALL_ARGS)
1111: {
1.21 kristaps 1112: int i, j, first, c, argcp[ROFF_MAXARG];
1.27 kristaps 1113: char *argvp[ROFF_MAXARG];
1.2 kristaps 1114:
1.4 kristaps 1115: if (ROFF_PRELUDE & tree->state) {
1.12 kristaps 1116: roff_err(tree, *argv, "`%s' disallowed in prelude",
1117: toknames[tok]);
1.4 kristaps 1118: return(0);
1119: }
1120:
1.27 kristaps 1121: first = (*argv == tree->cur);
1.12 kristaps 1122: argv++;
1.5 kristaps 1123:
1.27 kristaps 1124: if ( ! roffparseopts(tree, tok, &argv, argcp, argvp))
1125: return(0);
1.24 kristaps 1126: if ( ! (*tree->cb.roffin)(tree->arg, tok, argcp, argvp))
1.2 kristaps 1127: return(0);
1.27 kristaps 1128: if (NULL == *argv)
1129: return((*tree->cb.roffout)(tree->arg, tok));
1.1 kristaps 1130:
1.2 kristaps 1131: if ( ! (ROFF_PARSED & tokens[tok].flags)) {
1.21 kristaps 1132: i = 0;
1.14 kristaps 1133: while (*argv) {
1.21 kristaps 1134: if ( ! (*tree->cb.roffdata)(tree->arg, i, *argv++))
1.14 kristaps 1135: return(0);
1.21 kristaps 1136: i = 1;
1.14 kristaps 1137: }
1.15 kristaps 1138: return((*tree->cb.roffout)(tree->arg, tok));
1.2 kristaps 1139: }
1.1 kristaps 1140:
1.27 kristaps 1141: /*
1142: * Deal with punctuation. Ugly. Work ahead until we encounter
1143: * terminating punctuation. If we encounter it and all
1144: * subsequent tokens are punctuation, then stop processing (the
1145: * line-dominant macro will print these tokens after closure).
1146: */
1147:
1.21 kristaps 1148: i = 0;
1.2 kristaps 1149: while (*argv) {
1.20 kristaps 1150: if (ROFF_MAX == (c = rofffindcallable(*argv))) {
1.27 kristaps 1151: if ( ! roffispunct(*argv)) {
1152: if ( ! (*tree->cb.roffdata)
1153: (tree->arg, i, *argv++))
1154: return(0);
1.21 kristaps 1155: i = 1;
1.27 kristaps 1156: continue;
1.21 kristaps 1157: }
1.27 kristaps 1158:
1159: /* See if only punctuation remains. */
1.21 kristaps 1160:
1161: i = 1;
1.27 kristaps 1162: for (j = 0; argv[j]; j++)
1163: if ( ! roffispunct(argv[j]))
1164: break;
1165:
1166: if (argv[j]) {
1167: if ( ! (*tree->cb.roffdata)
1168: (tree->arg, 0, *argv++))
1169: return(0);
1170: continue;
1171: }
1172:
1173: /* Only punctuation remains. */
1174:
1175: if ( ! (*tree->cb.roffout)(tree->arg, tok))
1176: return(0);
1177: break;
1.8 kristaps 1178: }
1.20 kristaps 1179:
1180: /*
1181: * A sub-command has been found. Execute it and
1.27 kristaps 1182: * discontinue parsing for arguments. If we're
1183: * line-scoped, then close out after it returns; if we
1184: * aren't, then close out before.
1.20 kristaps 1185: */
1186:
1187: if (NULL == tokens[c].cb) {
1188: roff_err(tree, *argv, "unsupported macro `%s'",
1189: toknames[c]);
1190: return(0);
1191: }
1192:
1.27 kristaps 1193: if ( ! (ROFF_LSCOPE & tokens[tok].flags))
1194: if ( ! (*tree->cb.roffout)(tree->arg, tok))
1195: return(0);
1196:
1.20 kristaps 1197: if ( ! (*tokens[c].cb)(c, tree, argv, ROFF_ENTER))
1.14 kristaps 1198: return(0);
1.20 kristaps 1199:
1.27 kristaps 1200: if (ROFF_LSCOPE & tokens[tok].flags)
1201: if ( ! (*tree->cb.roffout)(tree->arg, tok))
1202: return(0);
1203:
1.20 kristaps 1204: break;
1.14 kristaps 1205: }
1.12 kristaps 1206:
1.27 kristaps 1207: if (NULL == *argv)
1208: return((*tree->cb.roffout)(tree->arg, tok));
1209: if ( ! first)
1210: return(1);
1.21 kristaps 1211:
1.27 kristaps 1212: /*
1213: * We're the line-dominant macro. Check if there's remaining
1214: * punctuation. If there is, then flush it out before exiting.
1.21 kristaps 1215: */
1216:
1.26 kristaps 1217: i = 0;
1218: while (argv[i])
1219: i++;
1.21 kristaps 1220:
1.26 kristaps 1221: assert(i > 0);
1222: if ( ! roffispunct(argv[--i]))
1223: return(1);
1.21 kristaps 1224:
1.26 kristaps 1225: while (i >= 0 && roffispunct(argv[i]))
1226: i--;
1.21 kristaps 1227:
1.26 kristaps 1228: assert(0 != i);
1229: i++;
1.21 kristaps 1230:
1.26 kristaps 1231: /* LINTED */
1232: while (argv[i])
1233: if ( ! (*tree->cb.roffdata)(tree->arg, 0, argv[i++]))
1234: return(0);
1.21 kristaps 1235:
1236: return(1);
1.6 kristaps 1237: }
1238:
1239:
1.9 kristaps 1240: /* ARGSUSED */
1.6 kristaps 1241: static int
1.27 kristaps 1242: roff_noop(ROFFCALL_ARGS)
1.6 kristaps 1243: {
1244:
1245: return(1);
1.1 kristaps 1246: }
1.9 kristaps 1247:
1248:
1249: /* ARGSUSED */
1250: static int
1.27 kristaps 1251: roff_depr(ROFFCALL_ARGS)
1.9 kristaps 1252: {
1253:
1.27 kristaps 1254: roff_err(tree, *argv, "`%s' is deprecated", toknames[tok]);
1255: return(0);
1.11 kristaps 1256: }
1.12 kristaps 1257:
1258:
1259: static void
1260: roff_warn(const struct rofftree *tree, const char *pos, char *fmt, ...)
1261: {
1262: va_list ap;
1263: char buf[128];
1264:
1265: va_start(ap, fmt);
1266: (void)vsnprintf(buf, sizeof(buf), fmt, ap);
1267: va_end(ap);
1268:
1.15 kristaps 1269: (*tree->cb.roffmsg)(tree->arg,
1270: ROFF_WARN, tree->cur, pos, buf);
1.12 kristaps 1271: }
1272:
1273:
1274: static void
1275: roff_err(const struct rofftree *tree, const char *pos, char *fmt, ...)
1276: {
1277: va_list ap;
1278: char buf[128];
1279:
1280: va_start(ap, fmt);
1281: (void)vsnprintf(buf, sizeof(buf), fmt, ap);
1282: va_end(ap);
1283:
1.15 kristaps 1284: (*tree->cb.roffmsg)(tree->arg,
1285: ROFF_ERROR, tree->cur, pos, buf);
1.12 kristaps 1286: }
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