mandoc/roff.c - diff

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Diff for /mandoc/roff.c between version 1.251 and 1.263

version 1.251, 2015/01/20 21:16:51

version 1.263, 2015/02/21 14:46:58

Line 179 enum rofft {

ROFF_minss,

ROFF_mk,

ROFF_mso,

/* MAN_na; ignored in mdoc(7) */

ROFF_na,

ROFF_ne,

/* MAN_nf; ignored in mdoc(7) */

ROFF_nh,

Line 396 static int roff_evalcond(struct roff *r, int,

static int roff_evalnum(struct roff *, int,

const char *, int *, int *, int);

static int roff_evalpar(struct roff *, int,

const char *, int *, int *);

const char *, int *, int *, int);

static int roff_evalstrcond(const char *, int *);

static void roff_free1(struct roff *);

static void roff_freereg(struct roffreg *);

static void roff_freestr(struct roffkv *);

static size_t roff_getname(struct roff *, char **, int, int);

static int roff_getnum(const char *, int *, int *);

static int roff_getnum(const char *, int *, int *, int);

static int roff_getop(const char *, int *, char *);

static int roff_getregn(const struct roff *,

const char *, size_t);

Line 441 static enum rofferr roff_userdef(ROFF_ARGS);

#define ASCII_LO 33

#define HASHWIDTH (ASCII_HI - ASCII_LO + 1)

#define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */

#define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */

static struct roffmac *hash[HASHWIDTH];

static struct roffmac roffs[ROFF_MAX] = {

Line 580 static struct roffmac roffs[ROFF_MAX] = {

Line 583 static struct roffmac roffs[ROFF_MAX] = {

{ "minss", roff_line_ignore, NULL, NULL, 0, NULL },

{ "mk", roff_line_ignore, NULL, NULL, 0, NULL },

{ "mso", roff_insec, NULL, NULL, 0, NULL },

{ "na", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ne", roff_line_ignore, NULL, NULL, 0, NULL },

{ "nh", roff_line_ignore, NULL, NULL, 0, NULL },

{ "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },

Line 608 static struct roffmac roffs[ROFF_MAX] = {

Line 612 static struct roffmac roffs[ROFF_MAX] = {

{ "po", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },

{ "psbb", roff_unsupp, NULL, NULL, 0, NULL },

{ "pshape", roff_line_ignore, NULL, NULL, 0, NULL },

{ "pshape", roff_unsupp, NULL, NULL, 0, NULL },

{ "pso", roff_insec, NULL, NULL, 0, NULL },

{ "ptr", roff_line_ignore, NULL, NULL, 0, NULL },

{ "pvs", roff_line_ignore, NULL, NULL, 0, NULL },

Line 640 static struct roffmac roffs[ROFF_MAX] = {

Line 644 static struct roffmac roffs[ROFF_MAX] = {

{ "sv", roff_line_ignore, NULL, NULL, 0, NULL },

{ "sy", roff_insec, NULL, NULL, 0, NULL },

{ "T&", roff_T_, NULL, NULL, 0, NULL },

{ "ta", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ta", roff_unsupp, NULL, NULL, 0, NULL },

{ "tc", roff_unsupp, NULL, NULL, 0, NULL },

{ "TE", roff_TE, NULL, NULL, 0, NULL },

{ "TH", roff_TH, NULL, NULL, 0, NULL },

{ "ti", roff_line_ignore, NULL, NULL, 0, NULL },

{ "ti", roff_unsupp, NULL, NULL, 0, NULL },

{ "tkf", roff_line_ignore, NULL, NULL, 0, NULL },

{ "tl", roff_unsupp, NULL, NULL, 0, NULL },

{ "tm", roff_line_ignore, NULL, NULL, 0, NULL },

Line 1004 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1008 roff_res(struct roff *r, struct buf *buf, int ln, int

/* Advance to the end of the name. */

naml = 0;

arg_complete = 1;

for (naml = 0; maxl == 0 || naml < maxl; naml++, cp++) {

while (maxl == 0 || naml < maxl) {

if (*cp == '\0') {

mandoc_msg(MANDOCERR_ESC_BAD, r->parse,

ln, (int)(stesc - buf->buf), stesc);

Line 1016 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1021 roff_res(struct roff *r, struct buf *buf, int ln, int

cp++;

break;

}

if (*cp++ != '\\' || stesc[1] != 'w') {

naml++;

continue;

}

switch (mandoc_escape(&cp, NULL, NULL)) {

case ESCAPE_SPECIAL:

/* FALLTHROUGH */

case ESCAPE_UNICODE:

/* FALLTHROUGH */

case ESCAPE_NUMBERED:

/* FALLTHROUGH */

case ESCAPE_OVERSTRIKE:

naml++;

break;

default:

break;

}

Line 1031 roff_res(struct roff *r, struct buf *buf, int ln, int

Line 1053 roff_res(struct roff *r, struct buf *buf, int ln, int

case 'B':

npos = 0;

ubuf[0] = arg_complete &&

roff_evalnum(r, ln, stnam, &npos, NULL, 0) &&

roff_evalnum(r, ln, stnam, &npos,

NULL, ROFFNUM_SCALE) &&

stnam + npos + 1 == cp ? '1' : '0';

ubuf[1] = '\0';

break;

Line 1166 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1189 roff_parseln(struct roff *r, int ln, struct buf *buf,

* 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

* text through the macro's filter.

* we're not a macro, just let it through.

* Equations process all content themselves.

* Finally, if there's an equation scope open, divert it into it

* Tables process almost all content themselves, but we want

* no matter our state.

* to warn about macros before passing it there.

if (r->last && ! ctl) {

if (r->last != NULL && ! ctl) {

t = r->last->tok;

assert(roffs[t].text);

e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);

Line 1180 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1203 roff_parseln(struct roff *r, int ln, struct buf *buf,

if (e != ROFF_CONT)

return(e);

}

if (r->eqn)

if (r->eqn != NULL)

return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));

if ( ! ctl) {

if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))

if (r->tbl)

return(tbl_read(r->tbl, ln, buf->buf, ppos));

return(tbl_read(r->tbl, ln, buf->buf, pos));

if ( ! ctl)

return(roff_parsetext(buf, pos, offs));

}

/* Skip empty request lines. */

Line 1219 roff_parseln(struct roff *r, int ln, struct buf *buf,

Line 1241 roff_parseln(struct roff *r, int ln, struct buf *buf,

if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {

mandoc_msg(MANDOCERR_TBLMACRO, r->parse,

ln, pos, buf->buf + spos);

return(ROFF_IGN);

if (t == ROFF_TS)

return(ROFF_IGN);

while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')

pos++;

while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')

pos++;

return(tbl_read(r->tbl, ln, buf->buf, pos));

}

Line 1604 roff_cond_text(ROFF_ARGS)

Line 1632 roff_cond_text(ROFF_ARGS)

* Ignore overflows, treat them just like the C language.

static int

roff_getnum(const char *v, int *pos, int *res)

roff_getnum(const char *v, int *pos, int *res, int flags)

{

int myres, n, p;

int myres, scaled, n, p;

if (NULL == res)

res = &myres;

p = *pos;

n = v[p] == '-';

if (n)

if (n || v[p] == '+')

p++;

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[p]))

p++;

for (*res = 0; isdigit((unsigned char)v[p]); p++)

*res = 10 * *res + v[p] - '0';

if (p == *pos + n)

Line 1624 roff_getnum(const char *v, int *pos, int *res)

Line 1656 roff_getnum(const char *v, int *pos, int *res)

if (n)

*res = -*res;

*pos = p;

/* Each number may be followed by one optional scaling unit. */

return 1;

switch (v[p]) {

case 'f':

scaled = *res * 65536;

break;

case 'i':

scaled = *res * 240;

break;

case 'c':

scaled = *res * 240 / 2.54;

break;

case 'v':

/* FALLTROUGH */

case 'P':

scaled = *res * 40;

break;

case 'm':

/* FALLTROUGH */

case 'n':

scaled = *res * 24;

break;

case 'p':

scaled = *res * 10 / 3;

break;

case 'u':

scaled = *res;

break;

case 'M':

scaled = *res * 6 / 25;

break;

default:

scaled = *res;

p--;

break;

}

if (flags & ROFFNUM_SCALE)

*res = scaled;

*pos = p + 1;

return(1);

}

Line 1712 roff_evalcond(struct roff *r, int ln, const char *v, i

Line 1783 roff_evalcond(struct roff *r, int ln, const char *v, i

}

savepos = *pos;

if (roff_evalnum(r, ln, v, pos, &number, 0))

if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))

return((number > 0) == wanttrue);

else if (*pos == savepos)

return(roff_evalstrcond(v, pos) == wanttrue);

Line 1935 roff_getop(const char *v, int *pos, char *res)

Line 2006 roff_getop(const char *v, int *pos, char *res)

static int

roff_evalpar(struct roff *r, int ln,

const char *v, int *pos, int *res)

const char *v, int *pos, int *res, int flags)

{

if ('(' != v[*pos])

return(roff_getnum(v, pos, res));

return(roff_getnum(v, pos, res, flags));

(*pos)++;

if ( ! roff_evalnum(r, ln, v, pos, res, 1))

if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))

return(0);

Line 1965 roff_evalpar(struct roff *r, int ln,

Line 2036 roff_evalpar(struct roff *r, int ln,

static int

roff_evalnum(struct roff *r, int ln, const char *v,

int *pos, int *res, int skipwhite)

int *pos, int *res, int flags)

{

int mypos, operand2;

char operator;

Line 1975 roff_evalnum(struct roff *r, int ln, const char *v,

Line 2046 roff_evalnum(struct roff *r, int ln, const char *v,

pos = &mypos;

}

if (skipwhite)

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[*pos]))

(*pos)++;

if ( ! roff_evalpar(r, ln, v, pos, res))

if ( ! roff_evalpar(r, ln, v, pos, res, flags))

return(0);

while (1) {

if (skipwhite)

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[*pos]))

(*pos)++;

if ( ! roff_getop(v, pos, &operator))

break;

if (skipwhite)

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[*pos]))

(*pos)++;

if ( ! roff_evalpar(r, ln, v, pos, &operand2))

if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))

return(0);

if (skipwhite)

if (flags & ROFFNUM_WHITE)

while (isspace((unsigned char)v[*pos]))

(*pos)++;

Line 2201 roff_nr(ROFF_ARGS)

Line 2272 roff_nr(ROFF_ARGS)

if (sign == '+' || sign == '-')

val++;

if (roff_evalnum(r, ln, val, NULL, &iv, 0))

if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))

roff_setreg(r, key, iv, sign);

return(ROFF_IGN);

Line 2256 roff_rm(ROFF_ARGS)

Line 2327 roff_rm(ROFF_ARGS)

static enum rofferr

roff_it(ROFF_ARGS)

{

char *cp;

size_t len;

int iv;

/* Parse the number of lines. */

cp = buf->buf + pos;

len = strcspn(cp, " \t");

if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {

cp[len] = '\0';

if ((iv = mandoc_strntoi(cp, len, 10)) <= 0) {

mandoc_msg(MANDOCERR_IT_NONUM, r->parse,

ln, ppos, buf->buf + 1);

return(ROFF_IGN);

}

cp += len + 1;

/* Arm the input line trap. */

while (isspace((unsigned char)buf->buf[pos]))

pos++;

* Arm the input line trap.

* Special-casing "an-trap" is an ugly workaround to cope

* with DocBook stupidly fiddling with man(7) internals.

roffit_lines = iv;

roffit_macro = mandoc_strdup(cp);

roffit_macro = mandoc_strdup(iv != 1 ||

strcmp(buf->buf + pos, "an-trap") ?

buf->buf + pos : "br");

return(ROFF_IGN);

}

Line 2314 roff_TE(ROFF_ARGS)

Line 2390 roff_TE(ROFF_ARGS)

if (NULL == r->tbl)

mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,

ln, ppos, "TE");

else

else if ( ! tbl_end(&r->tbl)) {

tbl_end(&r->tbl);

free(buf->buf);

buf->buf = mandoc_strdup(".sp");

buf->sz = 4;

return(ROFF_REPARSE);

}

return(ROFF_IGN);

}

Line 2473 roff_cc(ROFF_ARGS)

Line 2552 roff_cc(ROFF_ARGS)

r->control = 0;

if (*p != '\0')

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);

mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,

ln, p - buf->buf, "cc ... %s", p);

return(ROFF_IGN);

}

Line 2488 roff_tr(ROFF_ARGS)

Line 2568 roff_tr(ROFF_ARGS)

p = buf->buf + pos;

if (*p == '\0') {

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);

mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");

return(ROFF_IGN);

}

Line 2516 roff_tr(ROFF_ARGS)

Line 2596 roff_tr(ROFF_ARGS)

}

ssz = (size_t)(p - second);

} else if (*second == '\0') {

mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,

mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,

ln, (int)(p - buf->buf), NULL);

ln, first - buf->buf, "tr %s", first);

second = " ";

p--;

}

Line 2573 roff_so(ROFF_ARGS)

Line 2653 roff_so(ROFF_ARGS)

static enum rofferr

roff_userdef(ROFF_ARGS)

{

const char *arg[9];

const char *arg[9], *ap;

char *cp, *n1, *n2;

int i;

size_t asz, rsz;

* Collect pointers to macro argument strings

* and NUL-terminate them.

cp = buf->buf + pos;

for (i = 0; i < 9; i++)

arg[i] = *cp == '\0' ? "" :

Line 2589 roff_userdef(ROFF_ARGS)

Line 2671 roff_userdef(ROFF_ARGS)

* Expand macro arguments.

buf->sz = 0;

n1 = cp = mandoc_strdup(r->current_string);

buf->sz = strlen(r->current_string) + 1;

while ((cp = strstr(cp, "\\$")) != NULL) {

n1 = cp = mandoc_malloc(buf->sz);

i = cp[2] - '1';

memcpy(n1, r->current_string, buf->sz);

if (0 > i || 8 < i) {

while (*cp != '\0') {

/* Not an argument invocation. */

cp += 2;

/* Scan ahead for the next argument invocation. */

if (*cp++ != '\\')

continue;

if (*cp++ != '$')

continue;

i = *cp - '1';

if (0 > i || 8 < i)

continue;

cp -= 2;

* Determine the size of the expanded argument,

* taking escaping of quotes into account.

asz = 0;

for (ap = arg[i]; *ap != '\0'; ap++) {

asz++;

if (*ap == '"')

asz += 3;

}

*cp = '\0';

if (asz != 3) {

buf->sz = mandoc_asprintf(&n2, "%s%s%s",

n1, arg[i], cp + 3) + 1;

cp = n2 + (cp - n1);

* Determine the size of the rest of the

free(n1);

* unexpanded macro, including the NUL.

n1 = n2;

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 (ap = arg[i]; *ap != '\0'; ap++) {

if (*ap == '"') {

memcpy(n2, "\\(dq", 4);

n2 += 4;

} else

*n2++ = *ap;

}

* Replace the macro invocation

* by the expanded macro.

free(buf->buf);

buf->buf = n1;

if (buf->sz == 0)

buf->sz = strlen(buf->buf) + 1;

*offs = 0;

return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?

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