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5051 import mdocml-1.12.3
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>
Approved by: TBD
@@ -1,9 +1,9 @@
-/* $Id: roff.c,v 1.172 2011/10/24 21:41:45 schwarze Exp $ */
+/* $Id: roff.c,v 1.189 2013/12/30 18:44:06 schwarze Exp $ */
/*
- * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2010, 2011 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010, 2011, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
@@ -19,10 +19,11 @@
#include "config.h"
#endif
#include <assert.h>
#include <ctype.h>
+#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
#include "libroff.h"
@@ -37,15 +38,18 @@
enum rofft {
ROFF_ad,
ROFF_am,
ROFF_ami,
ROFF_am1,
+ ROFF_cc,
ROFF_de,
ROFF_dei,
ROFF_de1,
ROFF_ds,
ROFF_el,
+ ROFF_fam,
+ ROFF_hw,
ROFF_hy,
ROFF_ie,
ROFF_if,
ROFF_ig,
ROFF_it,
@@ -56,10 +60,12 @@
ROFF_ps,
ROFF_rm,
ROFF_so,
ROFF_ta,
ROFF_tr,
+ ROFF_Dd,
+ ROFF_TH,
ROFF_TS,
ROFF_TE,
ROFF_T_,
ROFF_EQ,
ROFF_EN,
@@ -68,25 +74,15 @@
ROFF_USERDEF,
ROFF_MAX
};
enum roffrule {
- ROFFRULE_ALLOW,
- ROFFRULE_DENY
+ ROFFRULE_DENY,
+ ROFFRULE_ALLOW
};
/*
- * A single register entity. If "set" is zero, the value of the
- * register should be the default one, which is per-register.
- * Registers are assumed to be unsigned ints for now.
- */
-struct reg {
- int set; /* whether set or not */
- unsigned int u; /* unsigned integer */
-};
-
-/*
* An incredibly-simple string buffer.
*/
struct roffstr {
char *p; /* nil-terminated buffer */
size_t sz; /* saved strlen(p) */
@@ -99,16 +95,27 @@
struct roffstr key;
struct roffstr val;
struct roffkv *next; /* next in list */
};
+/*
+ * A single number register as part of a singly-linked list.
+ */
+struct roffreg {
+ struct roffstr key;
+ int val;
+ struct roffreg *next;
+};
+
struct roff {
+ enum mparset parsetype; /* requested parse type */
struct mparse *parse; /* parse point */
struct roffnode *last; /* leaf of stack */
enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */
+ char control; /* control character */
int rstackpos; /* position in rstack */
- struct reg regs[REG__MAX];
+ struct roffreg *regtab; /* number registers */
struct roffkv *strtab; /* user-defined strings & macros */
struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
struct roffstr *xtab; /* single-byte trans table (`tr') */
const char *current_string; /* value of last called user macro */
struct tbl_node *first_tbl; /* first table parsed */
@@ -167,36 +174,45 @@
const char *, int, int);
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_cc(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_ds(ROFF_ARGS);
static enum roffrule roff_evalcond(const char *, int *);
static void roff_free1(struct roff *);
+static void roff_freereg(struct roffreg *);
static void roff_freestr(struct roffkv *);
static char *roff_getname(struct roff *, char **, int, int);
+static int roff_getnum(const char *, int *, int *);
+static int roff_getop(const char *, int *, char *);
+static int roff_getregn(const struct roff *,
+ const char *, size_t);
static const char *roff_getstrn(const struct roff *,
const char *, size_t);
+static enum rofferr roff_it(ROFF_ARGS);
static enum rofferr roff_line_ignore(ROFF_ARGS);
static enum rofferr roff_nr(ROFF_ARGS);
static void roff_openeqn(struct roff *, const char *,
int, int, const char *);
static enum rofft roff_parse(struct roff *, const char *, int *);
-static enum rofferr roff_parsetext(char *);
+static enum rofferr roff_parsetext(char **, size_t *, int, int *);
static enum rofferr roff_res(struct roff *,
char **, size_t *, int, int);
static enum rofferr roff_rm(ROFF_ARGS);
static void roff_setstr(struct roff *,
const char *, const char *, int);
static void roff_setstrn(struct roffkv **, const char *,
size_t, const char *, size_t, int);
static enum rofferr roff_so(ROFF_ARGS);
static enum rofferr roff_tr(ROFF_ARGS);
+static enum rofferr roff_Dd(ROFF_ARGS);
+static enum rofferr roff_TH(ROFF_ARGS);
static enum rofferr roff_TE(ROFF_ARGS);
static enum rofferr roff_TS(ROFF_ARGS);
static enum rofferr roff_EQ(ROFF_ARGS);
static enum rofferr roff_EN(ROFF_ARGS);
static enum rofferr roff_T_(ROFF_ARGS);
@@ -213,29 +229,34 @@
static struct roffmac roffs[ROFF_MAX] = {
{ "ad", roff_line_ignore, NULL, NULL, 0, NULL },
{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
+ { "cc", roff_cc, NULL, NULL, 0, NULL },
{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
{ "ds", roff_ds, NULL, NULL, 0, NULL },
{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
+ { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
{ "hy", roff_line_ignore, NULL, NULL, 0, NULL },
{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
{ "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
- { "it", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "it", roff_it, NULL, NULL, 0, NULL },
{ "ne", roff_line_ignore, NULL, NULL, 0, NULL },
{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },
{ "nr", roff_nr, NULL, NULL, 0, NULL },
{ "ns", roff_line_ignore, NULL, NULL, 0, NULL },
{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },
{ "rm", roff_rm, NULL, NULL, 0, NULL },
{ "so", roff_so, NULL, NULL, 0, NULL },
{ "ta", roff_line_ignore, NULL, NULL, 0, NULL },
{ "tr", roff_tr, NULL, NULL, 0, NULL },
+ { "Dd", roff_Dd, NULL, NULL, 0, NULL },
+ { "TH", roff_TH, NULL, NULL, 0, NULL },
{ "TS", roff_TS, NULL, NULL, 0, NULL },
{ "TE", roff_TE, NULL, NULL, 0, NULL },
{ "T&", roff_T_, NULL, NULL, 0, NULL },
{ "EQ", roff_EQ, NULL, NULL, 0, NULL },
{ "EN", roff_EN, NULL, NULL, 0, NULL },
@@ -242,19 +263,53 @@
{ ".", roff_cblock, NULL, NULL, 0, NULL },
{ "\\}", roff_ccond, NULL, NULL, 0, NULL },
{ NULL, roff_userdef, NULL, NULL, 0, NULL },
};
+const char *const __mdoc_reserved[] = {
+ "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
+ "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
+ "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
+ "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
+ "Ds", "Dt", "Dv", "Dx", "D1",
+ "Ec", "Ed", "Ef", "Ek", "El", "Em", "em",
+ "En", "Eo", "Eq", "Er", "Es", "Ev", "Ex",
+ "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
+ "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp", "LP",
+ "Me", "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
+ "Oc", "Oo", "Op", "Os", "Ot", "Ox",
+ "Pa", "Pc", "Pf", "Po", "Pp", "PP", "pp", "Pq",
+ "Qc", "Ql", "Qo", "Qq", "Or", "Rd", "Re", "Rs", "Rv",
+ "Sc", "Sf", "Sh", "SH", "Sm", "So", "Sq",
+ "Ss", "St", "Sx", "Sy",
+ "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
+ "%A", "%B", "%D", "%I", "%J", "%N", "%O",
+ "%P", "%Q", "%R", "%T", "%U", "%V",
+ NULL
+};
+
+const char *const __man_reserved[] = {
+ "AT", "B", "BI", "BR", "BT", "DE", "DS", "DT",
+ "EE", "EN", "EQ", "EX", "HF", "HP", "I", "IB", "IP", "IR",
+ "LP", "ME", "MT", "OP", "P", "PD", "PP", "PT",
+ "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS", "SY",
+ "TE", "TH", "TP", "TQ", "TS", "T&", "UC", "UE", "UR", "YS",
+ NULL
+};
+
/* Array of injected predefined strings. */
#define PREDEFS_MAX 38
static const struct predef predefs[PREDEFS_MAX] = {
#include "predefs.in"
};
/* See roffhash_find() */
#define ROFF_HASH(p) (p[0] - ASCII_LO)
+static int roffit_lines; /* number of lines to delay */
+static char *roffit_macro; /* nil-terminated macro line */
+
static void
roffhash_init(void)
{
struct roffmac *n;
int buc, i;
@@ -349,17 +404,17 @@
static void
roff_free1(struct roff *r)
{
- struct tbl_node *t;
+ struct tbl_node *tbl;
struct eqn_node *e;
int i;
- while (NULL != (t = r->first_tbl)) {
- r->first_tbl = t->next;
- tbl_free(t);
+ while (NULL != (tbl = r->first_tbl)) {
+ r->first_tbl = tbl->next;
+ tbl_free(tbl);
}
r->first_tbl = r->last_tbl = r->tbl = NULL;
while (NULL != (e = r->first_eqn)) {
@@ -375,10 +430,14 @@
roff_freestr(r->strtab);
roff_freestr(r->xmbtab);
r->strtab = r->xmbtab = NULL;
+ roff_freereg(r->regtab);
+
+ r->regtab = NULL;
+
if (r->xtab)
for (i = 0; i < 128; i++)
free(r->xtab[i].p);
free(r->xtab);
@@ -390,11 +449,11 @@
{
int i;
roff_free1(r);
- memset(&r->regs, 0, sizeof(struct reg) * REG__MAX);
+ r->control = 0;
for (i = 0; i < PREDEFS_MAX; i++)
roff_setstr(r, predefs[i].name, predefs[i].str, 0);
}
@@ -407,16 +466,17 @@
free(r);
}
struct roff *
-roff_alloc(struct mparse *parse)
+roff_alloc(enum mparset type, struct mparse *parse)
{
struct roff *r;
int i;
r = mandoc_calloc(1, sizeof(struct roff));
+ r->parsetype = type;
r->parse = parse;
r->rstackpos = -1;
roffhash_init();
@@ -425,49 +485,54 @@
return(r);
}
/*
- * Pre-filter each and every line for reserved words (one beginning with
- * `\*', e.g., `\*(ab'). These must be handled before the actual line
- * is processed.
- * This also checks the syntax of regular escapes.
+ * In the current line, expand user-defined strings ("\*")
+ * and references to number registers ("\n").
+ * Also check the syntax of other escape sequences.
*/
static enum rofferr
roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos)
{
- enum mandoc_esc esc;
+ char ubuf[12]; /* buffer to print the number */
const char *stesc; /* start of an escape sequence ('\\') */
const char *stnam; /* start of the name, after "[(*" */
const char *cp; /* end of the name, e.g. before ']' */
const char *res; /* the string to be substituted */
- int i, maxl, expand_count;
- size_t nsz;
- char *n;
+ char *nbuf; /* new buffer to copy bufp to */
+ size_t nsz; /* size of the new buffer */
+ size_t maxl; /* expected length of the escape name */
+ size_t naml; /* actual length of the escape name */
+ int expand_count; /* to avoid infinite loops */
expand_count = 0;
again:
cp = *bufp + pos;
while (NULL != (cp = strchr(cp, '\\'))) {
stesc = cp++;
/*
- * The second character must be an asterisk.
+ * The second character must be an asterisk or an n.
* If it isn't, skip it anyway: It is escaped,
* so it can't start another escape sequence.
*/
if ('\0' == *cp)
return(ROFF_CONT);
- if ('*' != *cp) {
- res = cp;
- esc = mandoc_escape(&cp, NULL, NULL);
- if (ESCAPE_ERROR != esc)
+ switch (*cp) {
+ case ('*'):
+ res = NULL;
+ break;
+ case ('n'):
+ res = ubuf;
+ break;
+ default:
+ if (ESCAPE_ERROR != mandoc_escape(&cp, NULL, NULL))
continue;
- cp = res;
mandoc_msg
(MANDOCERR_BADESCAPE, r->parse,
ln, (int)(stesc - *bufp), NULL);
return(ROFF_CONT);
}
@@ -474,11 +539,11 @@
cp++;
/*
* The third character decides the length
- * of the name of the string.
+ * of the name of the string or register.
* Save a pointer to the name.
*/
switch (*cp) {
case ('\0'):
@@ -497,11 +562,11 @@
}
stnam = cp;
/* Advance to the end of the name. */
- for (i = 0; 0 == maxl || i < maxl; i++, cp++) {
+ for (naml = 0; 0 == maxl || naml < maxl; naml++, cp++) {
if ('\0' == *cp) {
mandoc_msg
(MANDOCERR_BADESCAPE,
r->parse, ln,
(int)(stesc - *bufp), NULL);
@@ -514,11 +579,15 @@
/*
* Retrieve the replacement string; if it is
* undefined, resume searching for escapes.
*/
- res = roff_getstrn(r, stnam, (size_t)i);
+ if (NULL == res)
+ res = roff_getstrn(r, stnam, naml);
+ else
+ snprintf(ubuf, sizeof(ubuf), "%d",
+ roff_getregn(r, stnam, naml));
if (NULL == res) {
mandoc_msg
(MANDOCERR_BADESCAPE, r->parse,
ln, (int)(stesc - *bufp), NULL);
@@ -528,19 +597,19 @@
/* Replace the escape sequence by the string. */
pos = stesc - *bufp;
nsz = *szp + strlen(res) + 1;
- n = mandoc_malloc(nsz);
+ nbuf = mandoc_malloc(nsz);
- strlcpy(n, *bufp, (size_t)(stesc - *bufp + 1));
- strlcat(n, res, nsz);
- strlcat(n, cp + (maxl ? 0 : 1), nsz);
+ strlcpy(nbuf, *bufp, (size_t)(stesc - *bufp + 1));
+ strlcat(nbuf, res, nsz);
+ strlcat(nbuf, cp + (maxl ? 0 : 1), nsz);
free(*bufp);
- *bufp = n;
+ *bufp = nbuf;
*szp = nsz;
if (EXPAND_LIMIT >= ++expand_count)
goto again;
@@ -550,20 +619,24 @@
}
return(ROFF_CONT);
}
/*
- * Process text streams: convert all breakable hyphens into ASCII_HYPH.
+ * Process text streams:
+ * Convert all breakable hyphens into ASCII_HYPH.
+ * Decrement and spring input line trap.
*/
static enum rofferr
-roff_parsetext(char *p)
+roff_parsetext(char **bufp, size_t *szp, int pos, int *offs)
{
size_t sz;
const char *start;
+ char *p;
+ int isz;
enum mandoc_esc esc;
- start = p;
+ start = p = *bufp + pos;
while ('\0' != *p) {
sz = strcspn(p, "-\\");
p += sz;
@@ -571,12 +644,11 @@
break;
if ('\\' == *p) {
/* Skip over escapes. */
p++;
- esc = mandoc_escape
- ((const char **)&p, NULL, NULL);
+ esc = mandoc_escape((const char **)&p, NULL, NULL);
if (ESCAPE_ERROR == esc)
break;
continue;
} else if (p == start) {
p++;
@@ -587,10 +659,26 @@
isalpha((unsigned char)p[1]))
*p = ASCII_HYPH;
p++;
}
+ /* Spring the input line trap. */
+ if (1 == roffit_lines) {
+ isz = asprintf(&p, "%s\n.%s", *bufp, roffit_macro);
+ if (-1 == isz) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
+ }
+ free(*bufp);
+ *bufp = p;
+ *szp = isz + 1;
+ *offs = 0;
+ free(roffit_macro);
+ roffit_lines = 0;
+ return(ROFF_REPARSE);
+ } else if (1 < roffit_lines)
+ --roffit_lines;
return(ROFF_CONT);
}
enum rofferr
roff_parseln(struct roff *r, int ln, char **bufp,
@@ -609,11 +697,11 @@
if (ROFF_IGN == e)
return(e);
assert(ROFF_CONT == e);
ppos = pos;
- ctl = mandoc_getcontrol(*bufp, &pos);
+ ctl = roff_getcontrol(r, *bufp, &pos);
/*
* 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.
@@ -627,23 +715,18 @@
e = (*roffs[t].text)
(r, t, bufp, szp, ln, pos, pos, offs);
assert(ROFF_IGN == e || ROFF_CONT == e);
if (ROFF_CONT != e)
return(e);
+ }
if (r->eqn)
- return(eqn_read(&r->eqn, ln, *bufp, pos, offs));
+ return(eqn_read(&r->eqn, ln, *bufp, ppos, offs));
+ if ( ! ctl) {
if (r->tbl)
return(tbl_read(r->tbl, ln, *bufp, pos));
- return(roff_parsetext(*bufp + pos));
- } else if ( ! ctl) {
- if (r->eqn)
- return(eqn_read(&r->eqn, ln, *bufp, pos, offs));
- if (r->tbl)
- return(tbl_read(r->tbl, ln, *bufp, pos));
- return(roff_parsetext(*bufp + pos));
- } else if (r->eqn)
- return(eqn_read(&r->eqn, ln, *bufp, ppos, offs));
+ return(roff_parsetext(bufp, szp, pos, offs));
+ }
/*
* If a scope is open, go to the child handler for that macro,
* as it may want to preprocess before doing anything with it.
* Don't do so if an equation is open.
@@ -776,11 +859,11 @@
static void
roffnode_cleanscope(struct roff *r)
{
while (r->last) {
- if (--r->last->endspan < 0)
+ if (--r->last->endspan != 0)
break;
roffnode_pop(r);
}
}
@@ -982,32 +1065,36 @@
enum roffrule rr;
char *ep;
rr = r->last->rule;
roffnode_cleanscope(r);
+ t = roff_parse(r, *bufp, &pos);
/*
- * If the macro is unknown, first check if it contains a closing
- * delimiter `\}'. If it does, close out our scope and return
- * the currently-scoped rule (ignore or continue). Else, drop
- * into the currently-scoped rule.
+ * Fully handle known macros when they are structurally
+ * required or when the conditional evaluated to true.
*/
- if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) {
+ if ((ROFF_MAX != t) &&
+ (ROFF_ccond == t || ROFFRULE_ALLOW == rr ||
+ ROFFMAC_STRUCT & roffs[t].flags)) {
+ assert(roffs[t].proc);
+ return((*roffs[t].proc)(r, t, bufp, szp,
+ ln, ppos, pos, offs));
+ }
+
+ /* Always check for the closing delimiter `\}'. */
+
ep = &(*bufp)[pos];
- for ( ; NULL != (ep = strchr(ep, '\\')); ep++) {
- ep++;
- if ('}' != *ep)
+ while (NULL != (ep = strchr(ep, '\\'))) {
+ if ('}' != *(++ep))
continue;
/*
- * Make the \} go away.
- * This is a little haphazard, as it's not quite
- * clear how nroff does this.
* If we're at the end of line, then just chop
* off the \} and resize the buffer.
- * If we aren't, then conver it to spaces.
+ * If we aren't, then convert it to spaces.
*/
if ('\0' == *(ep + 1)) {
*--ep = '\0';
*szp -= 2;
@@ -1017,26 +1104,10 @@
roff_ccond(r, ROFF_ccond, bufp, szp,
ln, pos, pos + 2, offs);
break;
}
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
- }
-
- /*
- * 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));
}
/* ARGSUSED */
static enum rofferr
roff_cond_text(ROFF_ARGS)
@@ -1057,13 +1128,65 @@
ln, pos, pos + 2, offs);
}
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT);
}
+static int
+roff_getnum(const char *v, int *pos, int *res)
+{
+ int p, n;
+
+ p = *pos;
+ n = v[p] == '-';
+ if (n)
+ p++;
+
+ for (*res = 0; isdigit((unsigned char)v[p]); p++)
+ *res += 10 * *res + v[p] - '0';
+ if (p == *pos + n)
+ return 0;
+
+ if (n)
+ *res = -*res;
+
+ *pos = p;
+ return 1;
+}
+
+static int
+roff_getop(const char *v, int *pos, char *res)
+{
+ int e;
+
+ *res = v[*pos];
+ e = v[*pos + 1] == '=';
+
+ switch (*res) {
+ case '=':
+ break;
+ case '>':
+ if (e)
+ *res = 'g';
+ break;
+ case '<':
+ if (e)
+ *res = 'l';
+ break;
+ default:
+ return(0);
+ }
+
+ *pos += 1 + e;
+
+ return(*res);
+}
+
static enum roffrule
roff_evalcond(const char *v, int *pos)
{
+ int not, lh, rh;
+ char op;
switch (v[*pos]) {
case ('n'):
(*pos)++;
return(ROFFRULE_ALLOW);
@@ -1072,71 +1195,82 @@
case ('o'):
/* FALLTHROUGH */
case ('t'):
(*pos)++;
return(ROFFRULE_DENY);
+ case ('!'):
+ (*pos)++;
+ not = 1;
+ break;
default:
+ not = 0;
break;
}
- while (v[*pos] && ' ' != v[*pos])
- (*pos)++;
- return(ROFFRULE_DENY);
+ if (!roff_getnum(v, pos, &lh))
+ return ROFFRULE_DENY;
+ if (!roff_getop(v, pos, &op)) {
+ if (lh < 0)
+ lh = 0;
+ goto out;
+ }
+ if (!roff_getnum(v, pos, &rh))
+ return ROFFRULE_DENY;
+ switch (op) {
+ case 'g':
+ lh = lh >= rh;
+ break;
+ case 'l':
+ lh = lh <= rh;
+ break;
+ case '=':
+ lh = lh == rh;
+ break;
+ case '>':
+ lh = lh > rh;
+ break;
+ case '<':
+ lh = lh < rh;
+ break;
+ default:
+ return ROFFRULE_DENY;
+ }
+out:
+ if (not)
+ lh = !lh;
+ return lh ? ROFFRULE_ALLOW : ROFFRULE_DENY;
}
/* ARGSUSED */
static enum rofferr
roff_line_ignore(ROFF_ARGS)
{
- if (ROFF_it == tok)
- mandoc_msg(MANDOCERR_REQUEST, r->parse, ln, ppos, "it");
-
return(ROFF_IGN);
}
/* ARGSUSED */
static enum rofferr
roff_cond(ROFF_ARGS)
{
- int sv;
- enum roffrule rule;
+ roffnode_push(r, tok, NULL, ln, ppos);
+
/*
* An `.el' has no conditional body: it will consume the value
* of the current rstack entry set in prior `ie' calls or
* defaults to DENY.
*
* If we're not an `el', however, then evaluate the conditional.
*/
- rule = ROFF_el == tok ?
+ r->last->rule = ROFF_el == tok ?
(r->rstackpos < 0 ?
ROFFRULE_DENY : r->rstack[r->rstackpos--]) :
roff_evalcond(*bufp, &pos);
- sv = pos;
- while (' ' == (*bufp)[pos])
- pos++;
-
/*
- * 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) {
- mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
- return(ROFF_IGN);
- }
-
- roffnode_push(r, tok, NULL, ln, ppos);
-
- r->last->rule = rule;
-
- /*
* An if-else will put the NEGATION of the current evaluated
* conditional into the stack of rules.
*/
if (ROFF_ie == tok) {
@@ -1154,32 +1288,43 @@
if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule)
r->last->rule = ROFFRULE_DENY;
/*
- * Determine scope. If we're invoked with "\{" trailing the
- * conditional, then we're in a multiline scope. Else our scope
- * expires on the next line.
+ * Determine scope.
+ * If there is nothing on the line after the conditional,
+ * not even whitespace, use next-line scope.
*/
- r->last->endspan = 1;
+ if ('\0' == (*bufp)[pos]) {
+ r->last->endspan = 2;
+ goto out;
+ }
+ while (' ' == (*bufp)[pos])
+ pos++;
+
+ /* An opening brace requests multiline scope. */
+
if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) {
r->last->endspan = -1;
pos += 2;
+ goto out;
}
/*
- * If there are no arguments on the line, the next-line scope is
- * assumed.
+ * Anything else following the conditional causes
+ * single-line scope. Warn if the scope contains
+ * nothing but trailing whitespace.
*/
if ('\0' == (*bufp)[pos])
- return(ROFF_IGN);
+ mandoc_msg(MANDOCERR_NOARGS, r->parse, ln, ppos, NULL);
- /* Otherwise re-run the roff parser after recalculating. */
+ r->last->endspan = 1;
+out:
*offs = pos;
return(ROFF_RERUN);
}
@@ -1211,50 +1356,99 @@
/* The rest is the value. */
roff_setstr(r, name, string, 0);
return(ROFF_IGN);
}
+void
+roff_setreg(struct roff *r, const char *name, int val, char sign)
+{
+ struct roffreg *reg;
+
+ /* Search for an existing register with the same name. */
+ reg = r->regtab;
+
+ while (reg && strcmp(name, reg->key.p))
+ reg = reg->next;
+
+ if (NULL == reg) {
+ /* Create a new register. */
+ reg = mandoc_malloc(sizeof(struct roffreg));
+ reg->key.p = mandoc_strdup(name);
+ reg->key.sz = strlen(name);
+ reg->val = 0;
+ reg->next = r->regtab;
+ r->regtab = reg;
+ }
+
+ if ('+' == sign)
+ reg->val += val;
+ else if ('-' == sign)
+ reg->val -= val;
+ else
+ reg->val = val;
+}
+
int
-roff_regisset(const struct roff *r, enum regs reg)
+roff_getreg(const struct roff *r, const char *name)
{
+ struct roffreg *reg;
- return(r->regs[(int)reg].set);
+ for (reg = r->regtab; reg; reg = reg->next)
+ if (0 == strcmp(name, reg->key.p))
+ return(reg->val);
+
+ return(0);
}
-unsigned int
-roff_regget(const struct roff *r, enum regs reg)
+static int
+roff_getregn(const struct roff *r, const char *name, size_t len)
{
+ struct roffreg *reg;
- return(r->regs[(int)reg].u);
+ for (reg = r->regtab; reg; reg = reg->next)
+ if (len == reg->key.sz &&
+ 0 == strncmp(name, reg->key.p, len))
+ return(reg->val);
+
+ return(0);
}
-void
-roff_regunset(struct roff *r, enum regs reg)
+static void
+roff_freereg(struct roffreg *reg)
{
+ struct roffreg *old_reg;
- r->regs[(int)reg].set = 0;
+ while (NULL != reg) {
+ free(reg->key.p);
+ old_reg = reg;
+ reg = reg->next;
+ free(old_reg);
+ }
}
/* ARGSUSED */
static enum rofferr
roff_nr(ROFF_ARGS)
{
const char *key;
char *val;
+ size_t sz;
int iv;
+ char sign;
val = *bufp + pos;
key = roff_getname(r, &val, ln, pos);
- if (0 == strcmp(key, "nS")) {
- r->regs[(int)REG_nS].set = 1;
- if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0)
- r->regs[(int)REG_nS].u = (unsigned)iv;
- else
- r->regs[(int)REG_nS].u = 0u;
- }
+ sign = *val;
+ if ('+' == sign || '-' == sign)
+ val++;
+ sz = strspn(val, "0123456789");
+ iv = sz ? mandoc_strntoi(val, sz, 10) : 0;
+
+ roff_setreg(r, key, iv, sign);
+
return(ROFF_IGN);
}
/* ARGSUSED */
static enum rofferr
@@ -1272,10 +1466,61 @@
return(ROFF_IGN);
}
/* ARGSUSED */
static enum rofferr
+roff_it(ROFF_ARGS)
+{
+ char *cp;
+ size_t len;
+ int iv;
+
+ /* Parse the number of lines. */
+ cp = *bufp + pos;
+ len = strcspn(cp, " \t");
+ cp[len] = '\0';
+ if ((iv = mandoc_strntoi(cp, len, 10)) <= 0) {
+ mandoc_msg(MANDOCERR_NUMERIC, r->parse,
+ ln, ppos, *bufp + 1);
+ return(ROFF_IGN);
+ }
+ cp += len + 1;
+
+ /* Arm the input line trap. */
+ roffit_lines = iv;
+ roffit_macro = mandoc_strdup(cp);
+ return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
+roff_Dd(ROFF_ARGS)
+{
+ const char *const *cp;
+
+ if (MPARSE_MDOC != r->parsetype)
+ for (cp = __mdoc_reserved; *cp; cp++)
+ roff_setstr(r, *cp, NULL, 0);
+
+ return(ROFF_CONT);
+}
+
+/* ARGSUSED */
+static enum rofferr
+roff_TH(ROFF_ARGS)
+{
+ const char *const *cp;
+
+ if (MPARSE_MDOC != r->parsetype)
+ for (cp = __man_reserved; *cp; cp++)
+ roff_setstr(r, *cp, NULL, 0);
+
+ return(ROFF_CONT);
+}
+
+/* ARGSUSED */
+static enum rofferr
roff_TE(ROFF_ARGS)
{
if (NULL == r->tbl)
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL);
@@ -1350,30 +1595,47 @@
/* ARGSUSED */
static enum rofferr
roff_TS(ROFF_ARGS)
{
- struct tbl_node *t;
+ struct tbl_node *tbl;
if (r->tbl) {
mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL);
tbl_end(&r->tbl);
}
- t = tbl_alloc(ppos, ln, r->parse);
+ tbl = tbl_alloc(ppos, ln, r->parse);
if (r->last_tbl)
- r->last_tbl->next = t;
+ r->last_tbl->next = tbl;
else
- r->first_tbl = r->last_tbl = t;
+ r->first_tbl = r->last_tbl = tbl;
- r->tbl = r->last_tbl = t;
+ r->tbl = r->last_tbl = tbl;
return(ROFF_IGN);
}
/* ARGSUSED */
static enum rofferr
+roff_cc(ROFF_ARGS)
+{
+ const char *p;
+
+ p = *bufp + pos;
+
+ if ('\0' == *p || '.' == (r->control = *p++))
+ r->control = 0;
+
+ if ('\0' != *p)
+ mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);
+
+ return(ROFF_IGN);
+}
+
+/* ARGSUSED */
+static enum rofferr
roff_tr(ROFF_ARGS)
{
const char *p, *first, *second;
size_t fsz, ssz;
enum mandoc_esc esc;
@@ -1468,11 +1730,11 @@
char *cp, *n1, *n2;
int i;
/*
* Collect pointers to macro argument strings
- * and null-terminate them.
+ * and NUL-terminate them.
*/
cp = *bufp + pos;
for (i = 0; i < 9; i++)
arg[i] = '\0' == *cp ? "" :
mandoc_getarg(r->parse, &cp, ln, &pos);
@@ -1763,6 +2025,41 @@
ssz += sz;
}
res[(int)ssz] = '\0';
return(res);
+}
+
+/*
+ * Find out whether a line is a macro line or not.
+ * If it is, adjust the current position and return one; if it isn't,
+ * return zero and don't change the current position.
+ * If the control character has been set with `.cc', then let that grain
+ * precedence.
+ * This is slighly contrary to groff, where using the non-breaking
+ * control character when `cc' has been invoked will cause the
+ * non-breaking macro contents to be printed verbatim.
+ */
+int
+roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
+{
+ int pos;
+
+ pos = *ppos;
+
+ if (0 != r->control && cp[pos] == r->control)
+ pos++;
+ else if (0 != r->control)
+ return(0);
+ else if ('\\' == cp[pos] && '.' == cp[pos + 1])
+ pos += 2;
+ else if ('.' == cp[pos] || '\'' == cp[pos])
+ pos++;
+ else
+ return(0);
+
+ while (' ' == cp[pos] || '\t' == cp[pos])
+ pos++;
+
+ *ppos = pos;
+ return(1);
}