-/* $Id: roff.c,v 1.331 2018/08/16 13:54:06 schwarze Exp $ */
+/* $Id: roff.c,v 1.340 2018/08/24 23:12:33 schwarze Exp $ */
/*
* Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
char name[];
};
+/*
+ * A macro processing context.
+ * More than one is needed when macro calls are nested.
+ */
+struct mctx {
+ char **argv;
+ int argc;
+ int argsz;
+};
+
struct roff {
struct mparse *parse; /* parse point */
struct roff_man *man; /* mdoc or man parser */
struct roffnode *last; /* leaf of stack */
+ struct mctx *mstack; /* stack of macro contexts */
int *rstack; /* stack of inverted `ie' values */
struct ohash *reqtab; /* request lookup table */
struct roffreg *regtab; /* number registers */
struct eqn_node *eqn; /* active equation parser */
int eqn_inline; /* current equation is inline */
int options; /* parse options */
+ int mstacksz; /* current size of mstack */
+ int mstackpos; /* position in mstack */
int rstacksz; /* current size limit of rstack */
int rstackpos; /* position in rstack */
int format; /* current file in mdoc or man format */
- int argc; /* number of args of the last macro */
char control; /* control character */
char escape; /* escape character */
};
int pos, /* current pos in buffer */ \
int *offs /* reset offset of buffer data */
-typedef enum rofferr (*roffproc)(ROFF_ARGS);
+typedef int (*roffproc)(ROFF_ARGS);
struct roffmac {
roffproc proc; /* process new macro */
/* --- function prototypes ------------------------------------------------ */
-static void roffnode_cleanscope(struct roff *);
-static void roffnode_pop(struct roff *);
+static int roffnode_cleanscope(struct roff *);
+static int roffnode_pop(struct roff *);
static void roffnode_push(struct roff *, enum roff_tok,
const char *, int, int);
static void roff_addtbl(struct roff_man *, struct tbl_node *);
-static enum rofferr roff_als(ROFF_ARGS);
-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_br(ROFF_ARGS);
-static enum rofferr roff_cblock(ROFF_ARGS);
-static enum rofferr roff_cc(ROFF_ARGS);
-static void roff_ccond(struct roff *, int, int);
-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 rofferr roff_ec(ROFF_ARGS);
-static enum rofferr roff_eo(ROFF_ARGS);
-static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
+static int roff_als(ROFF_ARGS);
+static int roff_block(ROFF_ARGS);
+static int roff_block_text(ROFF_ARGS);
+static int roff_block_sub(ROFF_ARGS);
+static int roff_br(ROFF_ARGS);
+static int roff_cblock(ROFF_ARGS);
+static int roff_cc(ROFF_ARGS);
+static int roff_ccond(struct roff *, int, int);
+static int roff_cond(ROFF_ARGS);
+static int roff_cond_text(ROFF_ARGS);
+static int roff_cond_sub(ROFF_ARGS);
+static int roff_ds(ROFF_ARGS);
+static int roff_ec(ROFF_ARGS);
+static int roff_eo(ROFF_ARGS);
+static int roff_eqndelim(struct roff *, struct buf *, int);
static int roff_evalcond(struct roff *r, int, char *, int *);
static int roff_evalnum(struct roff *, int,
const char *, int *, int *, int);
const char *, size_t, int *);
static int roff_hasregn(const struct roff *,
const char *, size_t);
-static enum rofferr roff_insec(ROFF_ARGS);
-static enum rofferr roff_it(ROFF_ARGS);
-static enum rofferr roff_line_ignore(ROFF_ARGS);
+static int roff_insec(ROFF_ARGS);
+static int roff_it(ROFF_ARGS);
+static int roff_line_ignore(ROFF_ARGS);
static void roff_man_alloc1(struct roff_man *);
static void roff_man_free1(struct roff_man *);
-static enum rofferr roff_manyarg(ROFF_ARGS);
-static enum rofferr roff_nop(ROFF_ARGS);
-static enum rofferr roff_nr(ROFF_ARGS);
-static enum rofferr roff_onearg(ROFF_ARGS);
+static int roff_manyarg(ROFF_ARGS);
+static int roff_nop(ROFF_ARGS);
+static int roff_nr(ROFF_ARGS);
+static int roff_onearg(ROFF_ARGS);
static enum roff_tok roff_parse(struct roff *, char *, int *,
int, int);
-static enum rofferr roff_parsetext(struct roff *, struct buf *,
+static int roff_parsetext(struct roff *, struct buf *,
int, int *);
-static enum rofferr roff_renamed(ROFF_ARGS);
-static enum rofferr roff_res(struct roff *, struct buf *, int, int);
-static enum rofferr roff_rm(ROFF_ARGS);
-static enum rofferr roff_rn(ROFF_ARGS);
-static enum rofferr roff_rr(ROFF_ARGS);
+static int roff_renamed(ROFF_ARGS);
+static int roff_res(struct roff *, struct buf *, int, int);
+static int roff_return(ROFF_ARGS);
+static int roff_rm(ROFF_ARGS);
+static int roff_rn(ROFF_ARGS);
+static int roff_rr(ROFF_ARGS);
static void roff_setregn(struct roff *, const char *,
size_t, int, char, int);
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_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);
-static enum rofferr roff_unsupp(ROFF_ARGS);
-static enum rofferr roff_userdef(ROFF_ARGS);
+static int roff_shift(ROFF_ARGS);
+static int roff_so(ROFF_ARGS);
+static int roff_tr(ROFF_ARGS);
+static int roff_Dd(ROFF_ARGS);
+static int roff_TE(ROFF_ARGS);
+static int roff_TS(ROFF_ARGS);
+static int roff_EQ(ROFF_ARGS);
+static int roff_EN(ROFF_ARGS);
+static int roff_T_(ROFF_ARGS);
+static int roff_unsupp(ROFF_ARGS);
+static int roff_userdef(ROFF_ARGS);
/* --- constant data ------------------------------------------------------ */
"Dx", "%Q", "%U", "Ta",
NULL,
"TH", "SH", "SS", "TP",
+ "TQ",
"LP", "PP", "P", "IP",
"HP", "SM", "SB", "BI",
"IB", "BR", "RB", "R",
"nf", "fi",
"RE", "RS", "DT", "UC",
"PD", "AT", "in",
- "OP", "EX", "EE", "UR",
+ "SY", "YS", "OP",
+ "EX", "EE", "UR",
"UE", "MT", "ME", NULL
};
const char *const *roff_name = __roff_name;
{ roff_unsupp, NULL, NULL, 0 }, /* rchar */
{ roff_line_ignore, NULL, NULL, 0 }, /* rd */
{ roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
- { roff_unsupp, NULL, NULL, 0 }, /* return */
+ { roff_return, NULL, NULL, 0 }, /* return */
{ roff_unsupp, NULL, NULL, 0 }, /* rfschar */
{ roff_line_ignore, NULL, NULL, 0 }, /* rhang */
{ roff_rm, NULL, NULL, 0 }, /* rm */
{ roff_unsupp, NULL, NULL, 0 }, /* schar */
{ roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
{ roff_line_ignore, NULL, NULL, 0 }, /* shc */
- { roff_unsupp, NULL, NULL, 0 }, /* shift */
+ { roff_shift, NULL, NULL, 0 }, /* shift */
{ roff_line_ignore, NULL, NULL, 0 }, /* sizes */
{ roff_so, NULL, NULL, 0 }, /* so */
{ roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
{ roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
{ roff_line_ignore, NULL, NULL, 0 }, /* watchn */
{ roff_unsupp, NULL, NULL, 0 }, /* wh */
- { roff_unsupp, NULL, NULL, 0 }, /* while */
+ { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
{ roff_insec, NULL, NULL, 0 }, /* write */
{ roff_insec, NULL, NULL, 0 }, /* writec */
{ roff_insec, NULL, NULL, 0 }, /* writem */
* Pop the current node off of the stack of roff instructions currently
* pending.
*/
-static void
+static int
roffnode_pop(struct roff *r)
{
struct roffnode *p;
+ int inloop;
- assert(r->last);
p = r->last;
-
- r->last = r->last->parent;
+ inloop = p->tok == ROFF_while;
+ r->last = p->parent;
free(p->name);
free(p->end);
free(p);
+ return inloop;
}
/*
eqn_free(r->last_eqn);
r->last_eqn = r->eqn = NULL;
+ while (r->mstackpos >= 0)
+ roff_userret(r);
+
while (r->last)
roffnode_pop(r);
void
roff_free(struct roff *r)
{
+ int i;
+
roff_free1(r);
+ for (i = 0; i < r->mstacksz; i++)
+ free(r->mstack[i].argv);
+ free(r->mstack);
roffhash_free(r->reqtab);
free(r);
}
r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
r->options = options;
r->format = options & (MPARSE_MDOC | MPARSE_MAN);
+ r->mstackpos = -1;
r->rstackpos = -1;
r->escape = '\\';
return r;
* used in numerical expressions and conditional requests.
* Also check the syntax of the remaining escape sequences.
*/
-static enum rofferr
+static int
roff_res(struct roff *r, struct buf *buf, int ln, int pos)
{
+ struct mctx *ctx; /* current macro call context */
char ubuf[24]; /* buffer to print the number */
struct roff_node *n; /* used for header comments */
const char *start; /* start of the string to process */
char *nbuf; /* new buffer to copy buf->buf to */
size_t maxl; /* expected length of the escape name */
size_t naml; /* actual length of the escape name */
+ size_t asz; /* length of the replacement */
+ size_t rsz; /* length of the rest of the string */
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 */
+ int quote_args; /* true for \\$@, false for \\$* */
int done; /* no more input available */
int deftype; /* type of definition to paste */
int rcsid; /* kind of RCS id seen */
r->man->next = ROFF_NEXT_SIBLING;
}
- /* Discard comments. */
+ /* Line continuation with comment. */
+
+ if (stesc[1] == '#') {
+ *stesc = '\0';
+ return ROFF_IGN | ROFF_APPEND;
+ }
+
+ /* Discard normal comments. */
- while (stesc > start && stesc[-1] == ' ')
+ while (stesc > start && stesc[-1] == ' ' &&
+ (stesc == start + 1 || stesc[-2] != '\\'))
stesc--;
*stesc = '\0';
break;
if (done)
continue;
else
- return ROFF_APPEND;
+ return ROFF_IGN | ROFF_APPEND;
}
/* Decide whether to expand or to check only. */
cp = stesc + 1;
switch (*cp) {
case '*':
+ case '$':
res = NULL;
break;
case 'B':
}
}
break;
+ case '$':
+ if (r->mstackpos < 0) {
+ mandoc_vmsg(MANDOCERR_ARG_UNDEF,
+ r->parse, ln, (int)(stesc - buf->buf),
+ "%.3s", stesc);
+ break;
+ }
+ ctx = r->mstack + r->mstackpos;
+ npos = stesc[2] - '1';
+ if (npos >= 0 && npos <= 8) {
+ res = npos < ctx->argc ?
+ ctx->argv[npos] : "";
+ break;
+ }
+ if (stesc[2] == '*')
+ quote_args = 0;
+ else if (stesc[2] == '@')
+ quote_args = 1;
+ else {
+ mandoc_vmsg(MANDOCERR_ARG_NONUM,
+ r->parse, ln, (int)(stesc - buf->buf),
+ "%.3s", stesc);
+ break;
+ }
+ asz = 0;
+ for (npos = 0; npos < ctx->argc; npos++) {
+ if (npos)
+ asz++; /* blank */
+ if (quote_args)
+ asz += 2; /* quotes */
+ asz += strlen(ctx->argv[npos]);
+ }
+ if (asz != 3) {
+ rsz = buf->sz - (stesc - buf->buf) - 3;
+ if (asz < 3)
+ memmove(stesc + asz, stesc + 3, rsz);
+ buf->sz += asz - 3;
+ nbuf = mandoc_realloc(buf->buf, buf->sz);
+ start = nbuf + pos;
+ stesc = nbuf + (stesc - buf->buf);
+ buf->buf = nbuf;
+ if (asz > 3)
+ memmove(stesc + asz, stesc + 3, rsz);
+ }
+ for (npos = 0; npos < ctx->argc; npos++) {
+ if (npos)
+ *stesc++ = ' ';
+ if (quote_args)
+ *stesc++ = '"';
+ cp = ctx->argv[npos];
+ while (*cp != '\0')
+ *stesc++ = *cp++;
+ if (quote_args)
+ *stesc++ = '"';
+ }
+ continue;
case 'B':
npos = 0;
ubuf[0] = arg_complete &&
}
if (res == NULL) {
- mandoc_vmsg(MANDOCERR_STR_UNDEF,
- r->parse, ln, (int)(stesc - buf->buf),
- "%.*s", (int)naml, stnam);
+ if (stesc[1] == '*')
+ mandoc_vmsg(MANDOCERR_STR_UNDEF,
+ r->parse, ln, (int)(stesc - buf->buf),
+ "%.*s", (int)naml, stnam);
res = "";
} else if (buf->sz + strlen(res) > SHRT_MAX) {
mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
/*
* Process text streams.
*/
-static enum rofferr
+static int
roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
{
size_t sz;
return ROFF_CONT;
}
-enum rofferr
+int
roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
{
enum roff_tok t;
- enum rofferr e;
+ int e;
int pos; /* parse point */
int spos; /* saved parse point for messages */
int ppos; /* original offset in buf->buf */
/* Expand some escape sequences. */
e = roff_res(r, buf, ln, pos);
- if (e == ROFF_IGN || e == ROFF_APPEND)
+ if ((e & ROFF_MASK) == ROFF_IGN)
return e;
assert(e == ROFF_CONT);
if (r->last != NULL && ! ctl) {
t = r->last->tok;
e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
- if (e == ROFF_IGN)
+ if ((e & ROFF_MASK) == ROFF_IGN)
return e;
- assert(e == ROFF_CONT);
- }
+ e &= ~ROFF_MASK;
+ } else
+ e = ROFF_IGN;
if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
eqn_read(r->eqn, buf->buf + ppos);
- return ROFF_IGN;
+ return e;
}
if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
tbl_read(r->tbl, ln, buf->buf, ppos);
roff_addtbl(r->man, r->tbl);
- return ROFF_IGN;
+ return e;
}
if ( ! ctl)
- return roff_parsetext(r, buf, pos, offs);
+ return roff_parsetext(r, buf, pos, offs) | e;
/* Skip empty request lines. */
return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
}
+/*
+ * Internal interface function to tell the roff parser that execution
+ * of the current macro ended. This is required because macro
+ * definitions usually do not end with a .return request.
+ */
+void
+roff_userret(struct roff *r)
+{
+ struct mctx *ctx;
+ int i;
+
+ assert(r->mstackpos >= 0);
+ ctx = r->mstack + r->mstackpos;
+ for (i = 0; i < ctx->argc; i++)
+ free(ctx->argv[i]);
+ ctx->argc = 0;
+ r->mstackpos--;
+}
+
void
roff_endparse(struct roff *r)
{
/* --- handling of request blocks ----------------------------------------- */
-static enum rofferr
+static int
roff_cblock(ROFF_ARGS)
{
}
-static void
+static int
roffnode_cleanscope(struct roff *r)
{
+ int inloop;
- while (r->last) {
+ inloop = 0;
+ while (r->last != NULL) {
if (--r->last->endspan != 0)
break;
- roffnode_pop(r);
+ inloop += roffnode_pop(r);
}
+ return inloop;
}
-static void
+static int
roff_ccond(struct roff *r, int ln, int ppos)
{
-
if (NULL == r->last) {
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
ln, ppos, "\\}");
- return;
+ return 0;
}
switch (r->last->tok) {
case ROFF_el:
case ROFF_ie:
case ROFF_if:
+ case ROFF_while:
break;
default:
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
ln, ppos, "\\}");
- return;
+ return 0;
}
if (r->last->endspan > -1) {
mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
ln, ppos, "\\}");
- return;
+ return 0;
}
- roffnode_pop(r);
- roffnode_cleanscope(r);
- return;
+ return roffnode_pop(r) + roffnode_cleanscope(r);
}
-static enum rofferr
+static int
roff_block(ROFF_ARGS)
{
const char *name, *value;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_block_sub(ROFF_ARGS)
{
enum roff_tok t;
return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
}
-static enum rofferr
+static int
roff_block_text(ROFF_ARGS)
{
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_cond_sub(ROFF_ARGS)
{
- enum roff_tok t;
char *ep;
- int rr;
+ int endloop, irc, rr;
+ enum roff_tok t;
+ irc = ROFF_IGN;
rr = r->last->rule;
- roffnode_cleanscope(r);
+ endloop = tok != ROFF_while ? ROFF_IGN :
+ rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
+ if (roffnode_cleanscope(r))
+ irc |= endloop;
/*
* If `\}' occurs on a macro line without a preceding macro,
switch (ep[1]) {
case '}':
memmove(ep, ep + 2, strlen(ep + 2) + 1);
- roff_ccond(r, ln, ep - buf->buf);
+ if (roff_ccond(r, ln, ep - buf->buf))
+ irc |= endloop;
break;
case '\0':
++ep;
*/
t = roff_parse(r, buf->buf, &pos, ln, ppos);
- return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
- ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
- ? ROFF_CONT : ROFF_IGN;
+ irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
+ (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
+ rr ? ROFF_CONT : ROFF_IGN;
+ return irc;
}
-static enum rofferr
+static int
roff_cond_text(ROFF_ARGS)
{
char *ep;
- int rr;
+ int endloop, irc, rr;
+ irc = ROFF_IGN;
rr = r->last->rule;
- roffnode_cleanscope(r);
+ endloop = tok != ROFF_while ? ROFF_IGN :
+ rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
+ if (roffnode_cleanscope(r))
+ irc |= endloop;
ep = buf->buf + pos;
while ((ep = strchr(ep, '\\')) != NULL) {
if (*(++ep) == '}') {
*ep = '&';
- roff_ccond(r, ln, ep - buf->buf - 1);
+ if (roff_ccond(r, ln, ep - buf->buf - 1))
+ irc |= endloop;
}
if (*ep != '\0')
++ep;
}
- return rr ? ROFF_CONT : ROFF_IGN;
+ if (rr)
+ irc |= ROFF_CONT;
+ return irc;
}
/* --- handling of numeric and conditional expressions -------------------- */
static int
roff_evalcond(struct roff *r, int ln, char *v, int *pos)
{
- char *cp, *name;
- size_t sz;
- int deftype, number, savepos, istrue, wanttrue;
+ const char *start, *end;
+ char *cp, *name;
+ size_t sz;
+ int deftype, len, number, savepos, istrue, wanttrue;
if ('!' == v[*pos]) {
wanttrue = 0;
case 'o':
(*pos)++;
return wanttrue;
- case 'c':
case 'e':
case 't':
case 'v':
(*pos)++;
return !wanttrue;
+ case 'c':
+ do {
+ (*pos)++;
+ } while (v[*pos] == ' ');
+
+ /*
+ * Quirk for groff compatibility:
+ * The horizontal tab is neither available nor unavailable.
+ */
+
+ if (v[*pos] == '\t') {
+ (*pos)++;
+ return 0;
+ }
+
+ /* Printable ASCII characters are available. */
+
+ if (v[*pos] != '\\') {
+ (*pos)++;
+ return wanttrue;
+ }
+
+ end = v + ++*pos;
+ switch (mandoc_escape(&end, &start, &len)) {
+ case ESCAPE_SPECIAL:
+ istrue = mchars_spec2cp(start, len) != -1;
+ break;
+ case ESCAPE_UNICODE:
+ istrue = 1;
+ break;
+ case ESCAPE_NUMBERED:
+ istrue = mchars_num2char(start, len) != -1;
+ break;
+ default:
+ istrue = !wanttrue;
+ break;
+ }
+ *pos = end - v;
+ return istrue == wanttrue;
case 'd':
case 'r':
cp = v + *pos + 1;
return 0;
}
-static enum rofferr
+static int
roff_line_ignore(ROFF_ARGS)
{
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_insec(ROFF_ARGS)
{
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_unsupp(ROFF_ARGS)
{
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_cond(ROFF_ARGS)
{
+ int irc;
roffnode_push(r, tok, NULL, ln, ppos);
* Determine scope.
* If there is nothing on the line after the conditional,
* not even whitespace, use next-line scope.
+ * Except that .while does not support next-line scope.
*/
- if (buf->buf[pos] == '\0') {
+ if (buf->buf[pos] == '\0' && tok != ROFF_while) {
r->last->endspan = 2;
goto out;
}
out:
*offs = pos;
- return ROFF_RERUN;
+ irc = ROFF_RERUN;
+ if (tok == ROFF_while)
+ irc |= ROFF_WHILE;
+ return irc;
}
-static enum rofferr
+static int
roff_ds(ROFF_ARGS)
{
char *string;
switch (*name) {
case '$': /* Number of arguments of the last macro evaluated. */
- return r->argc;
+ return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
case 'A': /* ASCII approximation mode is always off. */
return 0;
case 'g': /* Groff compatibility mode is always on. */
}
}
-static enum rofferr
+static int
roff_nr(ROFF_ARGS)
{
char *key, *val, *step;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_rr(ROFF_ARGS)
{
struct roffreg *reg, **prev;
/* --- handler functions for roff requests -------------------------------- */
-static enum rofferr
+static int
roff_rm(ROFF_ARGS)
{
const char *name;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_it(ROFF_ARGS)
{
int iv;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_Dd(ROFF_ARGS)
{
int mask;
return ROFF_CONT;
}
-static enum rofferr
+static int
roff_TE(ROFF_ARGS)
{
if (r->tbl == NULL) {
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_T_(ROFF_ARGS)
{
/*
* Handle in-line equation delimiters.
*/
-static enum rofferr
+static int
roff_eqndelim(struct roff *r, struct buf *buf, int pos)
{
char *cp1, *cp2;
return ROFF_REPARSE;
}
-static enum rofferr
+static int
roff_EQ(ROFF_ARGS)
{
struct roff_node *n;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_EN(ROFF_ARGS)
{
if (r->eqn != NULL) {
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_TS(ROFF_ARGS)
{
if (r->tbl != NULL) {
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_onearg(ROFF_ARGS)
{
struct roff_node *n;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_manyarg(ROFF_ARGS)
{
struct roff_node *n;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_als(ROFF_ARGS)
{
char *oldn, *newn, *end, *value;
if (oldsz == 0)
return ROFF_IGN;
- valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
+ valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
(int)oldsz, oldn);
roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_br(ROFF_ARGS)
{
if (r->man->flags & (MAN_BLINE | MAN_ELINE))
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_cc(ROFF_ARGS)
{
const char *p;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_ec(ROFF_ARGS)
{
const char *p;
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_eo(ROFF_ARGS)
{
r->escape = '\0';
return ROFF_IGN;
}
-static enum rofferr
+static int
roff_nop(ROFF_ARGS)
{
while (buf->buf[pos] == ' ')
return ROFF_RERUN;
}
-static enum rofferr
+static int
roff_tr(ROFF_ARGS)
{
const char *p, *first, *second;
return ROFF_IGN;
}
-static enum rofferr
+/*
+ * Implementation of the .return request.
+ * There is no need to call roff_userret() from here.
+ * The read module will call that after rewinding the reader stack
+ * to the place from where the current macro was called.
+ */
+static int
+roff_return(ROFF_ARGS)
+{
+ if (r->mstackpos >= 0)
+ return ROFF_IGN | ROFF_USERRET;
+
+ mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
+ return ROFF_IGN;
+}
+
+static int
roff_rn(ROFF_ARGS)
{
const char *value;
return ROFF_IGN;
}
-static enum rofferr
+static int
+roff_shift(ROFF_ARGS)
+{
+ struct mctx *ctx;
+ int levels, i;
+
+ levels = 1;
+ if (buf->buf[pos] != '\0' &&
+ roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
+ mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
+ ln, pos, "shift %s", buf->buf + pos);
+ levels = 1;
+ }
+ if (r->mstackpos < 0) {
+ mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
+ return ROFF_IGN;
+ }
+ ctx = r->mstack + r->mstackpos;
+ if (levels > ctx->argc) {
+ mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
+ ln, pos, "%d, but max is %d", levels, ctx->argc);
+ levels = ctx->argc;
+ }
+ if (levels == 0)
+ return ROFF_IGN;
+ for (i = 0; i < levels; i++)
+ free(ctx->argv[i]);
+ ctx->argc -= levels;
+ for (i = 0; i < ctx->argc; i++)
+ ctx->argv[i] = ctx->argv[i + levels];
+ return ROFF_IGN;
+}
+
+static int
roff_so(ROFF_ARGS)
{
char *name, *cp;
/* --- user defined strings and macros ------------------------------------ */
-static enum rofferr
+static int
roff_userdef(ROFF_ARGS)
{
- const char *arg[16], *ap;
- char *cp, *n1, *n2;
- int expand_count, i, ib, ie;
- size_t asz, rsz;
+ struct mctx *ctx;
+ char *arg, *ap, *dst, *src;
+ size_t sz;
- /*
- * Collect pointers to macro argument strings
- * and NUL-terminate them.
- */
+ /* Initialize a new macro stack context. */
- r->argc = 0;
- cp = buf->buf + pos;
- for (i = 0; i < 16; i++) {
- if (*cp == '\0')
- arg[i] = "";
- else {
- arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
- r->argc = i + 1;
- }
+ if (++r->mstackpos == r->mstacksz) {
+ r->mstack = mandoc_recallocarray(r->mstack,
+ r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
+ r->mstacksz += 8;
}
+ ctx = r->mstack + r->mstackpos;
+ ctx->argsz = 0;
+ ctx->argc = 0;
+ ctx->argv = NULL;
/*
- * Expand macro arguments.
+ * Collect pointers to macro argument strings,
+ * NUL-terminating them and escaping quotes.
*/
- buf->sz = strlen(r->current_string) + 1;
- n1 = n2 = cp = mandoc_malloc(buf->sz);
- memcpy(n1, r->current_string, buf->sz);
- expand_count = 0;
- while (*cp != '\0') {
-
- /* Scan ahead for the next argument invocation. */
-
- if (*cp++ != '\\')
- continue;
- if (*cp++ != '$')
- continue;
- if (*cp == '*') { /* \\$* inserts all arguments */
- ib = 0;
- ie = r->argc - 1;
- } else { /* \\$1 .. \\$9 insert one argument */
- ib = ie = *cp - '1';
- if (ib < 0 || ib > 8)
- continue;
- }
- cp -= 2;
-
- /*
- * Prevent infinite recursion.
- */
-
- if (cp >= n2)
- expand_count = 1;
- else if (++expand_count > EXPAND_LIMIT) {
- mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
- ln, (int)(cp - n1), NULL);
- free(buf->buf);
- buf->buf = n1;
- *offs = 0;
- return ROFF_IGN;
+ src = buf->buf + pos;
+ while (*src != '\0') {
+ if (ctx->argc == ctx->argsz) {
+ ctx->argsz += 8;
+ ctx->argv = mandoc_reallocarray(ctx->argv,
+ ctx->argsz, sizeof(*ctx->argv));
}
-
- /*
- * Determine the size of the expanded argument,
- * taking escaping of quotes into account.
- */
-
- asz = ie > ib ? ie - ib : 0; /* for blanks */
- for (i = ib; i <= ie; i++) {
- for (ap = arg[i]; *ap != '\0'; ap++) {
- asz++;
- if (*ap == '"')
- asz += 3;
- }
- }
- if (asz != 3) {
-
- /*
- * Determine the size of the rest of the
- * unexpanded macro, including the NUL.
- */
-
- rsz = buf->sz - (cp - n1) - 3;
-
- /*
- * When shrinking, move before
- * releasing the storage.
- */
-
- if (asz < 3)
- memmove(cp + asz, cp + 3, rsz);
-
- /*
- * Resize the storage for the macro
- * and readjust the parse pointer.
- */
-
- buf->sz += asz - 3;
- n2 = mandoc_realloc(n1, buf->sz);
- cp = n2 + (cp - n1);
- n1 = n2;
-
- /*
- * When growing, make room
- * for the expanded argument.
- */
-
- if (asz > 3)
- memmove(cp + asz, cp + 3, rsz);
- }
-
- /* Copy the expanded argument, escaping quotes. */
-
- n2 = cp;
- for (i = ib; i <= ie; i++) {
- for (ap = arg[i]; *ap != '\0'; ap++) {
- if (*ap == '"') {
- memcpy(n2, "\\(dq", 4);
- n2 += 4;
- } else
- *n2++ = *ap;
- }
- if (i < ie)
- *n2++ = ' ';
+ arg = mandoc_getarg(r->parse, &src, ln, &pos);
+ sz = 1; /* For the terminating NUL. */
+ for (ap = arg; *ap != '\0'; ap++)
+ sz += *ap == '"' ? 4 : 1;
+ ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
+ for (ap = arg; *ap != '\0'; ap++) {
+ if (*ap == '"') {
+ memcpy(dst, "\\(dq", 4);
+ dst += 4;
+ } else
+ *dst++ = *ap;
}
+ *dst = '\0';
}
- /*
- * Replace the macro invocation
- * by the expanded macro.
- */
+ /* Replace the macro invocation by the macro definition. */
free(buf->buf);
- buf->buf = n1;
+ buf->buf = mandoc_strdup(r->current_string);
+ buf->sz = strlen(buf->buf) + 1;
*offs = 0;
return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
- ROFF_REPARSE : ROFF_APPEND;
+ ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
}
/*
* Calling a high-level macro that was renamed with .rn.
* r->current_string has already been set up by roff_parse().
*/
-static enum rofferr
+static int
roff_renamed(ROFF_ARGS)
{
char *nbuf;
git.ckatri.com / mandoc.git / blobdiff