version 1.78, 2010/05/16 22:28:33 |
version 1.80, 2010/05/17 00:37:26 |
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#define ROFF_CTL(c) \ |
#define ROFF_CTL(c) \ |
('.' == (c) || '\'' == (c)) |
('.' == (c) || '\'' == (c)) |
#if 0 |
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#define ROFF_MDEBUG(p, str) \ |
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fprintf(stderr, "%s: %s (%d:%d)\n", (str), \ |
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roffs[(p)->last->tok].name, \ |
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(p)->last->line, (p)->last->col) |
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#else |
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#define ROFF_MDEBUG(p, str) while (/* CONSTCOND */ 0) |
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#endif |
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enum rofft { |
enum rofft { |
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ROFF_am, |
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ROFF_ami, |
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ROFF_am1, |
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ROFF_de, |
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ROFF_dei, |
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ROFF_de1, |
ROFF_if, |
ROFF_if, |
ROFF_ig, |
ROFF_ig, |
ROFF_cblock, |
ROFF_cblock, |
ROFF_ccond, |
ROFF_ccond, |
#if 0 |
#if 0 |
ROFF_am, |
ROFF_ie, |
ROFF_ami, |
ROFF_el, |
ROFF_de, |
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ROFF_dei, |
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ROFF_close, |
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#endif |
#endif |
ROFF_MAX |
ROFF_MAX |
}; |
}; |
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void *data; /* privdata for messages */ |
void *data; /* privdata for messages */ |
}; |
}; |
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enum roffrule { |
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ROFFRULE_ALLOW, |
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ROFFRULE_DENY |
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}; |
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struct roffnode { |
struct roffnode { |
enum rofft tok; /* type of node */ |
enum rofft tok; /* type of node */ |
struct roffnode *parent; /* up one in stack */ |
struct roffnode *parent; /* up one in stack */ |
char *end; /* end-token: custom */ |
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int line; /* parse line */ |
int line; /* parse line */ |
int col; /* parse col */ |
int col; /* parse col */ |
int endspan; |
char *end; /* end-rules: custom token */ |
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int endspan; /* end-rules: next-line or infty */ |
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enum roffrule rule; |
}; |
}; |
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#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
Line 80 typedef enum rofferr (*roffproc)(ROFF_ARGS); |
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Line 81 typedef enum rofferr (*roffproc)(ROFF_ARGS); |
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struct roffmac { |
struct roffmac { |
const char *name; /* macro name */ |
const char *name; /* macro name */ |
roffproc proc; |
roffproc proc; /* process new macro */ |
roffproc text; |
roffproc text; /* process as child text of macro */ |
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roffproc sub; /* process as child of macro */ |
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int flags; |
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#define ROFFMAC_STRUCT (1 << 0) /* always interpret */ |
}; |
}; |
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static enum rofferr roff_if(ROFF_ARGS); |
static enum rofferr roff_block(ROFF_ARGS); |
static enum rofferr roff_if_text(ROFF_ARGS); |
static enum rofferr roff_block_text(ROFF_ARGS); |
static enum rofferr roff_ig(ROFF_ARGS); |
static enum rofferr roff_block_sub(ROFF_ARGS); |
static enum rofferr roff_ig_text(ROFF_ARGS); |
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static enum rofferr roff_cblock(ROFF_ARGS); |
static enum rofferr roff_cblock(ROFF_ARGS); |
static enum rofferr roff_ccond(ROFF_ARGS); |
static enum rofferr roff_ccond(ROFF_ARGS); |
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static enum rofferr roff_if(ROFF_ARGS); |
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static enum rofferr roff_if_text(ROFF_ARGS); |
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static enum rofferr roff_if_sub(ROFF_ARGS); |
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const struct roffmac roffs[ROFF_MAX] = { |
const struct roffmac roffs[ROFF_MAX] = { |
{ "if", roff_if, roff_if_text }, |
{ "am", roff_block, roff_block_text, roff_block_sub, 0 }, |
{ "ig", roff_ig, roff_ig_text }, |
{ "ami", roff_block, roff_block_text, roff_block_sub, 0 }, |
{ ".", roff_cblock, NULL }, |
{ "am1", roff_block, roff_block_text, roff_block_sub, 0 }, |
{ "\\}", roff_ccond, NULL }, |
{ "de", roff_block, roff_block_text, roff_block_sub, 0 }, |
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{ "dei", roff_block, roff_block_text, roff_block_sub, 0 }, |
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{ "de1", roff_block, roff_block_text, roff_block_sub, 0 }, |
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{ "if", roff_if, roff_if_text, roff_if_sub, ROFFMAC_STRUCT }, |
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{ "ig", roff_block, roff_block_text, roff_block_sub, 0 }, |
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{ ".", roff_cblock, NULL, NULL, 0 }, |
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{ "\\}", roff_ccond, NULL, NULL, 0 }, |
}; |
}; |
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static void roff_free1(struct roff *); |
static void roff_free1(struct roff *); |
Line 162 roffnode_push(struct roff *r, enum rofft tok, int line |
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Line 174 roffnode_push(struct roff *r, enum rofft tok, int line |
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p->parent = r->last; |
p->parent = r->last; |
p->line = line; |
p->line = line; |
p->col = col; |
p->col = col; |
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p->rule = p->parent ? p->parent->rule : ROFFRULE_DENY; |
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r->last = p; |
r->last = p; |
return(1); |
return(1); |
Line 215 roff_parseln(struct roff *r, int ln, |
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Line 228 roff_parseln(struct roff *r, int ln, |
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char **bufp, size_t *szp, int pos, int *offs) |
char **bufp, size_t *szp, int pos, int *offs) |
{ |
{ |
enum rofft t; |
enum rofft t; |
int ppos, i, j, wtf; |
int ppos; |
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/* |
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* First, if a scope is open and we're not a macro, pass the |
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* text through the macro's filter. If a scope isn't open and |
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* we're not a macro, just let it through. |
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*/ |
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if (r->last && ! ROFF_CTL((*bufp)[pos])) { |
if (r->last && ! ROFF_CTL((*bufp)[pos])) { |
/* |
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* If a scope is open and we're not a macro, pass it |
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* through our text detector and continue as quickly as |
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* possible. |
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*/ |
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t = r->last->tok; |
t = r->last->tok; |
assert(roffs[t].text); |
assert(roffs[t].text); |
return((*roffs[t].text) |
return((*roffs[t].text) |
(r, t, bufp, szp, ln, pos, pos, offs)); |
(r, t, bufp, szp, ln, pos, pos, offs)); |
} else if ( ! ROFF_CTL((*bufp)[pos])) |
} else if ( ! ROFF_CTL((*bufp)[pos])) |
/* |
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* Don't do anything if we're free-form text. |
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*/ |
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return(ROFF_CONT); |
return(ROFF_CONT); |
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/* A macro-ish line with a possibly-open macro context. */ |
/* |
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* If a scope is open, go to the child handler for that macro, |
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* as it may want to preprocess before doing anything with it. |
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*/ |
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wtf = 0; |
if (r->last) { |
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t = r->last->tok; |
if (r->last && r->last->end) { |
assert(roffs[t].sub); |
/* |
return((*roffs[t].sub) |
* We have a scope open that has a custom end-macro |
(r, t, bufp, szp, ln, pos, pos, offs)); |
* handler. Try to match it against the input. |
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*/ |
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i = pos + 1; |
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while (' ' == (*bufp)[i] || '\t' == (*bufp)[i]) |
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i++; |
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for (j = 0; r->last->end[j]; j++, i++) |
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if ((*bufp)[i] != r->last->end[j]) |
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break; |
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if ('\0' == r->last->end[j] && |
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('\0' == (*bufp)[i] || |
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' ' == (*bufp)[i] || |
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'\t' == (*bufp)[i])) { |
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roffnode_pop(r); |
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roffnode_cleanscope(r); |
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wtf = 1; |
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} |
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} |
} |
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/* |
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* Lastly, as we've no scope open, try to look up and execute |
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* the new macro. If no macro is found, simply return and let |
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* the compilers handle it. |
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*/ |
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ppos = pos; |
ppos = pos; |
if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) { |
if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) |
/* |
return(ROFF_CONT); |
* This is some of groff's stranger behaviours. If we |
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* encountered a custom end-scope tag and that tag also |
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* happens to be a "real" macro, then we need to try |
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* interpreting it again as a real macro. If it's not, |
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* then return ignore. Else continue. |
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*/ |
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if (wtf) |
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return(ROFF_IGN); |
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else if (NULL == r->last) |
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return(ROFF_CONT); |
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/* FIXME: this assumes that we ignore!? */ |
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return(ROFF_IGN); |
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} |
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assert(roffs[t].proc); |
assert(roffs[t].proc); |
return((*roffs[t].proc) |
return((*roffs[t].proc) |
(r, t, bufp, szp, ln, ppos, pos, offs)); |
(r, t, bufp, szp, ln, ppos, pos, offs)); |
Line 341 static enum rofferr |
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Line 329 static enum rofferr |
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roff_cblock(ROFF_ARGS) |
roff_cblock(ROFF_ARGS) |
{ |
{ |
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/* |
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* A block-close `..' should only be invoked as a child of an |
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* ignore macro, otherwise raise a warning and just ignore it. |
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*/ |
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if (NULL == r->last) { |
if (NULL == r->last) { |
if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
Line 357 roff_cblock(ROFF_ARGS) |
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Line 350 roff_cblock(ROFF_ARGS) |
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if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
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ROFF_MDEBUG(r, "closing ignore block"); |
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roffnode_pop(r); |
roffnode_pop(r); |
roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
return(ROFF_IGN); |
return(ROFF_IGN); |
Line 372 roffnode_cleanscope(struct roff *r) |
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Line 364 roffnode_cleanscope(struct roff *r) |
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while (r->last) { |
while (r->last) { |
if (--r->last->endspan < 0) |
if (--r->last->endspan < 0) |
break; |
break; |
ROFF_MDEBUG(r, "closing implicit scope"); |
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roffnode_pop(r); |
roffnode_pop(r); |
} |
} |
} |
} |
Line 405 roff_ccond(ROFF_ARGS) |
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Line 396 roff_ccond(ROFF_ARGS) |
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if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
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ROFF_MDEBUG(r, "closing explicit scope"); |
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roffnode_pop(r); |
roffnode_pop(r); |
roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
return(ROFF_IGN); |
return(ROFF_IGN); |
Line 414 roff_ccond(ROFF_ARGS) |
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Line 404 roff_ccond(ROFF_ARGS) |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_ig(ROFF_ARGS) |
roff_block(ROFF_ARGS) |
{ |
{ |
int sv; |
int sv; |
size_t sz; |
size_t sz; |
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if (ROFF_ig != tok && '\0' == (*bufp)[pos]) { |
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if ( ! (*r->msg)(MANDOCERR_NOARGS, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
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return(ROFF_IGN); |
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} else if (ROFF_ig != tok) { |
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while ((*bufp)[pos] && ' ' != (*bufp)[pos]) |
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pos++; |
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while (' ' == (*bufp)[pos]) |
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pos++; |
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} |
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if ( ! roffnode_push(r, tok, ln, ppos)) |
if ( ! roffnode_push(r, tok, ln, ppos)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
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if ('\0' == (*bufp)[pos]) { |
if ('\0' == (*bufp)[pos]) |
ROFF_MDEBUG(r, "opening ignore block"); |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
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sv = pos; |
sv = pos; |
while ((*bufp)[pos] && ' ' != (*bufp)[pos] && |
while ((*bufp)[pos] && ' ' != (*bufp)[pos] && |
Line 441 roff_ig(ROFF_ARGS) |
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Line 440 roff_ig(ROFF_ARGS) |
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assert(pos > sv); |
assert(pos > sv); |
sz = (size_t)(pos - sv); |
sz = (size_t)(pos - sv); |
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if (1 == sz && '.' == (*bufp)[sv]) |
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return(ROFF_IGN); |
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r->last->end = malloc(sz + 1); |
r->last->end = malloc(sz + 1); |
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if (NULL == r->last->end) { |
if (NULL == r->last->end) { |
Line 451 roff_ig(ROFF_ARGS) |
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Line 453 roff_ig(ROFF_ARGS) |
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memcpy(r->last->end, *bufp + sv, sz); |
memcpy(r->last->end, *bufp + sv, sz); |
r->last->end[(int)sz] = '\0'; |
r->last->end[(int)sz] = '\0'; |
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ROFF_MDEBUG(r, "opening explicit ignore block"); |
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if ((*bufp)[pos]) |
if ((*bufp)[pos]) |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
Line 463 roff_ig(ROFF_ARGS) |
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Line 463 roff_ig(ROFF_ARGS) |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_ig_text(ROFF_ARGS) |
roff_if_sub(ROFF_ARGS) |
{ |
{ |
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enum rofft t; |
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enum roffrule rr; |
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ppos = pos; |
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rr = r->last->rule; |
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roffnode_cleanscope(r); |
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if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) |
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return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
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/* |
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* A denied conditional must evaluate its children if and only |
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* if they're either structurally required (such as loops and |
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* conditionals) or a closing macro. |
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*/ |
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if (ROFFRULE_DENY == rr) |
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if ( ! (ROFFMAC_STRUCT & roffs[t].flags)) |
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if (ROFF_ccond != t) |
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return(ROFF_IGN); |
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assert(roffs[t].proc); |
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return((*roffs[t].proc) |
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(r, t, bufp, szp, ln, ppos, pos, offs)); |
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} |
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/* ARGSUSED */ |
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static enum rofferr |
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roff_block_sub(ROFF_ARGS) |
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{ |
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enum rofft t; |
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int i, j; |
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/* |
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* First check whether a custom macro exists at this level. If |
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* it does, then check against it. This is some of groff's |
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* stranger behaviours. If we encountered a custom end-scope |
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* tag and that tag also happens to be a "real" macro, then we |
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* need to try interpreting it again as a real macro. If it's |
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* not, then return ignore. Else continue. |
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*/ |
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if (r->last->end) { |
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i = pos + 1; |
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while (' ' == (*bufp)[i] || '\t' == (*bufp)[i]) |
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i++; |
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for (j = 0; r->last->end[j]; j++, i++) |
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if ((*bufp)[i] != r->last->end[j]) |
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break; |
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if ('\0' == r->last->end[j] && |
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('\0' == (*bufp)[i] || |
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' ' == (*bufp)[i] || |
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'\t' == (*bufp)[i])) { |
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roffnode_pop(r); |
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roffnode_cleanscope(r); |
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if (ROFF_MAX != roff_parse(*bufp, &pos)) |
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return(ROFF_RERUN); |
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return(ROFF_IGN); |
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} |
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} |
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/* |
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* If we have no custom end-query or lookup failed, then try |
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* pulling it out of the hashtable. |
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*/ |
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ppos = pos; |
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t = roff_parse(*bufp, &pos); |
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/* If we're not a comment-end, then throw it away. */ |
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if (ROFF_cblock != t) |
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return(ROFF_IGN); |
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assert(roffs[t].proc); |
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return((*roffs[t].proc)(r, t, bufp, |
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szp, ln, ppos, pos, offs)); |
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} |
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/* ARGSUSED */ |
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static enum rofferr |
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roff_block_text(ROFF_ARGS) |
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{ |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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Line 482 roff_if_text(ROFF_ARGS) |
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Line 568 roff_if_text(ROFF_ARGS) |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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if (ep > st && '\\' != *(ep - 1)) { |
if (ep > st && '\\' != *(ep - 1)) |
ROFF_MDEBUG(r, "closing explicit scope (in-line)"); |
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roffnode_pop(r); |
roffnode_pop(r); |
} |
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roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
return(ROFF_IGN); |
return(ROFF_IGN); |
Line 533 roff_if(ROFF_ARGS) |
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Line 617 roff_if(ROFF_ARGS) |
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r->last->endspan = 1; |
r->last->endspan = 1; |
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if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) { |
if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) { |
ROFF_MDEBUG(r, "opening explicit scope"); |
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r->last->endspan = -1; |
r->last->endspan = -1; |
pos += 2; |
pos += 2; |
} else |
} |
ROFF_MDEBUG(r, "opening implicit scope"); |
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/* |
/* |
* If there are no arguments on the line, the next-line scope is |
* If there are no arguments on the line, the next-line scope is |