-/* $Id: roff.c,v 1.228 2014/09/06 23:24:32 schwarze Exp $ */
+/* $Id: roff.c,v 1.237 2014/10/28 17:36:19 schwarze Exp $ */
/*
* Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org>
ROFF_nh,
ROFF_nr,
ROFF_ns,
+ ROFF_pl,
ROFF_ps,
ROFF_rm,
ROFF_rr,
struct roff {
struct mparse *parse; /* parse point */
+ const struct mchars *mchars; /* character table */
struct roffnode *last; /* leaf of stack */
int *rstack; /* stack of inverted `ie' values */
struct roffreg *regtab; /* number registers */
struct eqn_node *last_eqn; /* last equation parsed */
struct eqn_node *first_eqn; /* first equation parsed */
struct eqn_node *eqn; /* current equation being parsed */
+ int eqn_inline; /* current equation is inline */
int options; /* parse options */
int rstacksz; /* current size limit of rstack */
int rstackpos; /* position in rstack */
static enum rofferr roff_cond_text(ROFF_ARGS);
static enum rofferr roff_cond_sub(ROFF_ARGS);
static enum rofferr roff_ds(ROFF_ARGS);
-static int roff_evalcond(const char *, int *);
-static int roff_evalnum(const char *, int *, int *, int);
-static int roff_evalpar(const char *, int *, int *);
+static enum rofferr roff_eqndelim(struct roff *,
+ char **, size_t *, int);
+static int roff_evalcond(struct roff *r, int,
+ const char *, int *);
+static int roff_evalnum(struct roff *, int,
+ const char *, int *, int *, int);
+static int roff_evalpar(struct roff *, int,
+ const char *, int *, int *);
static int roff_evalstrcond(const char *, int *);
static void roff_free1(struct roff *);
static void roff_freereg(struct roffreg *);
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 *, char *, int *,
int, int);
static enum rofferr roff_parsetext(char **, size_t *, int, int *);
{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },
{ "nr", roff_nr, NULL, NULL, 0, NULL },
{ "ns", roff_line_ignore, NULL, NULL, 0, NULL },
+ { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },
{ "rm", roff_rm, NULL, NULL, 0, NULL },
{ "rr", roff_rr, NULL, NULL, 0, NULL },
}
struct roff *
-roff_alloc(struct mparse *parse, int options)
+roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
{
struct roff *r;
r = mandoc_calloc(1, sizeof(struct roff));
r->parse = parse;
+ r->mchars = mchars;
r->options = options;
r->format = options & (MPARSE_MDOC | MPARSE_MAN);
r->rstackpos = -1;
char *nbuf; /* new buffer to copy bufp to */
size_t maxl; /* expected length of the escape name */
size_t naml; /* actual length of the escape name */
+ enum mandoc_esc esc; /* type of the escape sequence */
+ int inaml; /* length returned from mandoc_escape() */
int expand_count; /* to avoid infinite loops */
int npos; /* position in numeric expression */
int arg_complete; /* argument not interrupted by eol */
res = ubuf;
break;
default:
- if (ESCAPE_ERROR == mandoc_escape(&cp, NULL, NULL))
+ esc = mandoc_escape(&cp, &stnam, &inaml);
+ if (esc == ESCAPE_ERROR ||
+ (esc == ESCAPE_SPECIAL &&
+ mchars_spec2cp(r->mchars, stnam, inaml) < 0))
mandoc_vmsg(MANDOCERR_ESC_BAD,
r->parse, ln, (int)(stesc - *bufp),
"%.*s", (int)(cp - stesc), stesc);
case 'B':
npos = 0;
ubuf[0] = arg_complete &&
- roff_evalnum(stnam, &npos, NULL, 0) &&
+ roff_evalnum(r, ln, stnam, &npos, NULL, 0) &&
stnam + npos + 1 == cp ? '1' : '0';
ubuf[1] = '\0';
break;
enum rofferr e;
int ppos, ctl;
- /*
- * Run the reserved-word filter only if we have some reserved
- * words to fill in.
- */
+ /* Handle in-line equation delimiters. */
+
+ if (r->tbl == NULL &&
+ r->last_eqn != NULL && r->last_eqn->delim &&
+ (r->eqn == NULL || r->eqn_inline)) {
+ e = roff_eqndelim(r, bufp, szp, pos);
+ if (e == ROFF_REPARSE)
+ return(e);
+ assert(e == ROFF_CONT);
+ }
+
+ /* Expand some escape sequences. */
e = roff_res(r, bufp, szp, ln, pos);
if (ROFF_IGN == e)
* or string condition.
*/
static int
-roff_evalcond(const char *v, int *pos)
+roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
{
int wanttrue, number;
break;
}
- if (roff_evalnum(v, pos, &number, 0))
+ if (roff_evalnum(r, ln, v, pos, &number, 0))
return((number > 0) == wanttrue);
else
return(roff_evalstrcond(v, pos) == wanttrue);
r->last->rule = ROFF_el == tok ?
(r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
- roff_evalcond(*bufp, &pos);
+ roff_evalcond(r, ln, *bufp, &pos);
/*
* An if-else will put the NEGATION of the current evaluated
* or a single signed integer number.
*/
static int
-roff_evalpar(const char *v, int *pos, int *res)
+roff_evalpar(struct roff *r, int ln,
+ const char *v, int *pos, int *res)
{
if ('(' != v[*pos])
return(roff_getnum(v, pos, res));
(*pos)++;
- if ( ! roff_evalnum(v, pos, res, 1))
+ if ( ! roff_evalnum(r, ln, v, pos, res, 1))
return(0);
/*
* Proceed left to right, there is no concept of precedence.
*/
static int
-roff_evalnum(const char *v, int *pos, int *res, int skipwhite)
+roff_evalnum(struct roff *r, int ln, const char *v,
+ int *pos, int *res, int skipwhite)
{
int mypos, operand2;
char operator;
while (isspace((unsigned char)v[*pos]))
(*pos)++;
- if ( ! roff_evalpar(v, pos, res))
+ if ( ! roff_evalpar(r, ln, v, pos, res))
return(0);
while (1) {
while (isspace((unsigned char)v[*pos]))
(*pos)++;
- if ( ! roff_evalpar(v, pos, &operand2))
+ if ( ! roff_evalpar(r, ln, v, pos, &operand2))
return(0);
if (skipwhite)
*res *= operand2;
break;
case '/':
+ if (0 == operand2) {
+ mandoc_msg(MANDOCERR_DIVZERO,
+ r->parse, ln, *pos, v);
+ *res = 0;
+ break;
+ }
*res /= operand2;
break;
case '%':
if ('+' == sign || '-' == sign)
val++;
- if (roff_evalnum(val, NULL, &iv, 0))
+ if (roff_evalnum(r, ln, val, NULL, &iv, 0))
roff_setreg(r, key, iv, sign);
return(ROFF_IGN);
return(ROFF_IGN);
}
-#if 0
-static int
-roff_closeeqn(struct roff *r)
+/*
+ * Handle in-line equation delimiters.
+ */
+static enum rofferr
+roff_eqndelim(struct roff *r, char **bufp, size_t *szp, int pos)
{
+ char *cp1, *cp2;
+ const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
+
+ /*
+ * Outside equations, look for an opening delimiter.
+ * If we are inside an equation, we already know it is
+ * in-line, or this function wouldn't have been called;
+ * so look for a closing delimiter.
+ */
+
+ cp1 = *bufp + pos;
+ cp2 = strchr(cp1, r->eqn == NULL ?
+ r->last_eqn->odelim : r->last_eqn->cdelim);
+ if (cp2 == NULL)
+ return(ROFF_CONT);
+
+ *cp2++ = '\0';
+ bef_pr = bef_nl = aft_nl = aft_pr = "";
+
+ /* Handle preceding text, protecting whitespace. */
+
+ if (**bufp != '\0') {
+ if (r->eqn == NULL)
+ bef_pr = "\\&";
+ bef_nl = "\n";
+ }
+
+ /*
+ * Prepare replacing the delimiter with an equation macro
+ * and drop leading white space from the equation.
+ */
+
+ if (r->eqn == NULL) {
+ while (*cp2 == ' ')
+ cp2++;
+ mac = ".EQ";
+ } else
+ mac = ".EN";
+
+ /* Handle following text, protecting whitespace. */
+
+ if (*cp2 != '\0') {
+ aft_nl = "\n";
+ if (r->eqn != NULL)
+ aft_pr = "\\&";
+ }
- return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0);
+ /* Do the actual replacement. */
+
+ *szp = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", *bufp,
+ bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
+ free(*bufp);
+ *bufp = cp1;
+
+ /* Toggle the in-line state of the eqn subsystem. */
+
+ r->eqn_inline = r->eqn == NULL;
+ return(ROFF_REPARSE);
}
-#endif
-static void
-roff_openeqn(struct roff *r, const char *name, int line,
- int offs, const char *buf)
+static enum rofferr
+roff_EQ(ROFF_ARGS)
{
struct eqn_node *e;
- int poff;
assert(NULL == r->eqn);
- e = eqn_alloc(name, offs, line, r->parse);
+ e = eqn_alloc(ppos, ln, r->parse);
- if (r->last_eqn)
+ if (r->last_eqn) {
r->last_eqn->next = e;
- else
+ e->delim = r->last_eqn->delim;
+ e->odelim = r->last_eqn->odelim;
+ e->cdelim = r->last_eqn->cdelim;
+ } else
r->first_eqn = r->last_eqn = e;
r->eqn = r->last_eqn = e;
- if (buf) {
- poff = 0;
- eqn_read(&r->eqn, line, buf, offs, &poff);
- }
-}
-
-static enum rofferr
-roff_EQ(ROFF_ARGS)
-{
+ if ((*bufp)[pos])
+ mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
+ ".EQ %s", *bufp + pos);
- roff_openeqn(r, *bufp + pos, ln, ppos, NULL);
return(ROFF_IGN);
}
git.ckatri.com / mandoc.git / blobdiff