version 1.139, 2011/05/24 14:00:39 |
version 1.152, 2011/07/26 14:09:01 |
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#include "libroff.h" |
#include "libroff.h" |
#include "libmandoc.h" |
#include "libmandoc.h" |
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/* Maximum number of nested if-else conditionals. */ |
#define RSTACK_MAX 128 |
#define RSTACK_MAX 128 |
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enum rofft { |
enum rofft { |
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ROFF_EQ, |
ROFF_EQ, |
ROFF_EN, |
ROFF_EN, |
ROFF_cblock, |
ROFF_cblock, |
ROFF_ccond, /* FIXME: remove this. */ |
ROFF_ccond, |
ROFF_USERDEF, |
ROFF_USERDEF, |
ROFF_MAX |
ROFF_MAX |
}; |
}; |
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ROFFRULE_DENY |
ROFFRULE_DENY |
}; |
}; |
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/* |
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* A single register entity. If "set" is zero, the value of the |
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* register should be the default one, which is per-register. |
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* Registers are assumed to be unsigned ints for now. |
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*/ |
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struct reg { |
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int set; /* whether set or not */ |
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unsigned int u; /* unsigned integer */ |
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}; |
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struct roffstr { |
struct roffstr { |
char *name; /* key of symbol */ |
char *name; /* key of symbol */ |
char *string; /* current value */ |
char *string; /* current value */ |
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struct roffnode *last; /* leaf of stack */ |
struct roffnode *last; /* leaf of stack */ |
enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */ |
enum roffrule rstack[RSTACK_MAX]; /* stack of !`ie' rules */ |
int rstackpos; /* position in rstack */ |
int rstackpos; /* position in rstack */ |
struct regset *regs; /* read/writable registers */ |
struct reg regs[REG__MAX]; |
struct roffstr *first_string; /* user-defined strings & macros */ |
struct roffstr *first_string; /* user-defined strings & macros */ |
const char *current_string; /* value of last called user macro */ |
const char *current_string; /* value of last called user macro */ |
struct tbl_node *first_tbl; /* first table parsed */ |
struct tbl_node *first_tbl; /* first table parsed */ |
Line 124 struct roffmac { |
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Line 135 struct roffmac { |
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struct roffmac *next; |
struct roffmac *next; |
}; |
}; |
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struct predef { |
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const char *name; /* predefined input name */ |
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const char *str; /* replacement symbol */ |
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}; |
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#define PREDEF(__name, __str) \ |
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{ (__name), (__str) }, |
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static enum rofferr roff_block(ROFF_ARGS); |
static enum rofferr roff_block(ROFF_ARGS); |
static enum rofferr roff_block_text(ROFF_ARGS); |
static enum rofferr roff_block_text(ROFF_ARGS); |
static enum rofferr roff_block_sub(ROFF_ARGS); |
static enum rofferr roff_block_sub(ROFF_ARGS); |
Line 141 static const char *roff_getstrn(const struct roff *, |
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Line 160 static const char *roff_getstrn(const struct roff *, |
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static enum rofferr roff_line_ignore(ROFF_ARGS); |
static enum rofferr roff_line_ignore(ROFF_ARGS); |
static enum rofferr roff_nr(ROFF_ARGS); |
static enum rofferr roff_nr(ROFF_ARGS); |
static int roff_res(struct roff *, |
static int roff_res(struct roff *, |
char **, size_t *, int); |
char **, size_t *, int, int); |
static enum rofferr roff_rm(ROFF_ARGS); |
static enum rofferr roff_rm(ROFF_ARGS); |
static void roff_setstr(struct roff *, |
static void roff_setstr(struct roff *, |
const char *, const char *, int); |
const char *, const char *, int); |
Line 195 static struct roffmac roffs[ROFF_MAX] = { |
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Line 214 static struct roffmac roffs[ROFF_MAX] = { |
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{ NULL, roff_userdef, NULL, NULL, 0, NULL }, |
{ NULL, roff_userdef, NULL, NULL, 0, NULL }, |
}; |
}; |
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/* Array of injected predefined strings. */ |
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#define PREDEFS_MAX 38 |
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static const struct predef predefs[PREDEFS_MAX] = { |
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#include "predefs.in" |
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}; |
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static void roff_free1(struct roff *); |
static void roff_free1(struct roff *); |
static enum rofft roff_hash_find(const char *, size_t); |
static enum rofft roff_hash_find(const char *, size_t); |
static void roff_hash_init(void); |
static void roff_hash_init(void); |
Line 228 roff_hash_init(void) |
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Line 253 roff_hash_init(void) |
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} |
} |
} |
} |
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/* |
/* |
* Look up a roff token by its name. Returns ROFF_MAX if no macro by |
* Look up a roff token by its name. Returns ROFF_MAX if no macro by |
* the nil-terminated string name could be found. |
* the nil-terminated string name could be found. |
Line 333 roff_free1(struct roff *r) |
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Line 357 roff_free1(struct roff *r) |
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void |
void |
roff_reset(struct roff *r) |
roff_reset(struct roff *r) |
{ |
{ |
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int i; |
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roff_free1(r); |
roff_free1(r); |
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memset(&r->regs, 0, sizeof(struct reg) * REG__MAX); |
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for (i = 0; i < PREDEFS_MAX; i++) |
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roff_setstr(r, predefs[i].name, predefs[i].str, 0); |
} |
} |
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Line 348 roff_free(struct roff *r) |
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Line 378 roff_free(struct roff *r) |
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struct roff * |
struct roff * |
roff_alloc(struct regset *regs, struct mparse *parse) |
roff_alloc(struct mparse *parse) |
{ |
{ |
struct roff *r; |
struct roff *r; |
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int i; |
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r = mandoc_calloc(1, sizeof(struct roff)); |
r = mandoc_calloc(1, sizeof(struct roff)); |
r->regs = regs; |
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r->parse = parse; |
r->parse = parse; |
r->rstackpos = -1; |
r->rstackpos = -1; |
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roff_hash_init(); |
roff_hash_init(); |
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for (i = 0; i < PREDEFS_MAX; i++) |
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roff_setstr(r, predefs[i].name, predefs[i].str, 0); |
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return(r); |
return(r); |
} |
} |
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Line 368 roff_alloc(struct regset *regs, struct mparse *parse) |
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Line 402 roff_alloc(struct regset *regs, struct mparse *parse) |
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* is processed. |
* is processed. |
*/ |
*/ |
static int |
static int |
roff_res(struct roff *r, char **bufp, size_t *szp, int pos) |
roff_res(struct roff *r, char **bufp, size_t *szp, int ln, int pos) |
{ |
{ |
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enum mandoc_esc esc; |
const char *stesc; /* start of an escape sequence ('\\') */ |
const char *stesc; /* start of an escape sequence ('\\') */ |
const char *stnam; /* start of the name, after "[(*" */ |
const char *stnam; /* start of the name, after "[(*" */ |
const char *cp; /* end of the name, e.g. before ']' */ |
const char *cp; /* end of the name, e.g. before ']' */ |
Line 392 roff_res(struct roff *r, char **bufp, size_t *szp, int |
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Line 427 roff_res(struct roff *r, char **bufp, size_t *szp, int |
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if ('\0' == *cp) |
if ('\0' == *cp) |
return(1); |
return(1); |
if ('*' != *cp++) |
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if ('*' != *cp) { |
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res = cp; |
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esc = mandoc_escape(&cp, NULL, NULL); |
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if (ESCAPE_ERROR != esc) |
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continue; |
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mandoc_msg(MANDOCERR_BADESCAPE, |
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r->parse, ln, pos, NULL); |
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cp = res; |
continue; |
continue; |
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} |
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cp++; |
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/* |
/* |
* The third character decides the length |
* The third character decides the length |
* of the name of the string. |
* of the name of the string. |
Line 435 roff_res(struct roff *r, char **bufp, size_t *szp, int |
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Line 481 roff_res(struct roff *r, char **bufp, size_t *szp, int |
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res = roff_getstrn(r, stnam, (size_t)i); |
res = roff_getstrn(r, stnam, (size_t)i); |
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if (NULL == res) { |
if (NULL == res) { |
cp -= maxl ? 1 : 0; |
/* TODO: keep track of the correct position. */ |
continue; |
mandoc_msg(MANDOCERR_BADESCAPE, r->parse, ln, pos, NULL); |
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res = ""; |
} |
} |
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/* Replace the escape sequence by the string. */ |
/* Replace the escape sequence by the string. */ |
Line 472 roff_parseln(struct roff *r, int ln, char **bufp, |
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Line 519 roff_parseln(struct roff *r, int ln, char **bufp, |
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* words to fill in. |
* words to fill in. |
*/ |
*/ |
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if (r->first_string && ! roff_res(r, bufp, szp, pos)) |
if (r->first_string && ! roff_res(r, bufp, szp, ln, pos)) |
return(ROFF_REPARSE); |
return(ROFF_REPARSE); |
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ppos = pos; |
ppos = pos; |
Line 495 roff_parseln(struct roff *r, int ln, char **bufp, |
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Line 542 roff_parseln(struct roff *r, int ln, char **bufp, |
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if (ROFF_CONT != e) |
if (ROFF_CONT != e) |
return(e); |
return(e); |
if (r->eqn) |
if (r->eqn) |
return(eqn_read(&r->eqn, ln, *bufp, pos)); |
return(eqn_read(&r->eqn, ln, *bufp, pos, offs)); |
if (r->tbl) |
if (r->tbl) |
return(tbl_read(r->tbl, ln, *bufp, pos)); |
return(tbl_read(r->tbl, ln, *bufp, pos)); |
return(ROFF_CONT); |
return(ROFF_CONT); |
} else if ( ! ctl) { |
} else if ( ! ctl) { |
if (r->eqn) |
if (r->eqn) |
return(eqn_read(&r->eqn, ln, *bufp, pos)); |
return(eqn_read(&r->eqn, ln, *bufp, pos, offs)); |
if (r->tbl) |
if (r->tbl) |
return(tbl_read(r->tbl, ln, *bufp, pos)); |
return(tbl_read(r->tbl, ln, *bufp, pos)); |
return(ROFF_CONT); |
return(ROFF_CONT); |
} else if (r->eqn) |
} else if (r->eqn) |
return(eqn_read(&r->eqn, ln, *bufp, ppos)); |
return(eqn_read(&r->eqn, ln, *bufp, ppos, offs)); |
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/* |
/* |
* If a scope is open, go to the child handler for that macro, |
* If a scope is open, go to the child handler for that macro, |
Line 548 roff_endparse(struct roff *r) |
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Line 595 roff_endparse(struct roff *r) |
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if (r->eqn) { |
if (r->eqn) { |
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
r->eqn->eqn.line, r->eqn->eqn.pos, NULL); |
r->eqn->eqn.ln, r->eqn->eqn.pos, NULL); |
eqn_end(r->eqn); |
eqn_end(&r->eqn); |
r->eqn = NULL; |
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} |
} |
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if (r->tbl) { |
if (r->tbl) { |
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
mandoc_msg(MANDOCERR_SCOPEEXIT, r->parse, |
r->tbl->line, r->tbl->pos, NULL); |
r->tbl->line, r->tbl->pos, NULL); |
tbl_end(r->tbl); |
tbl_end(&r->tbl); |
r->tbl = NULL; |
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} |
} |
} |
} |
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Line 572 roff_parse(struct roff *r, const char *buf, int *pos) |
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Line 617 roff_parse(struct roff *r, const char *buf, int *pos) |
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size_t maclen; |
size_t maclen; |
enum rofft t; |
enum rofft t; |
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if ('\0' == buf[*pos] || '"' == buf[*pos]) |
if ('\0' == buf[*pos] || '"' == buf[*pos] || |
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'\t' == buf[*pos] || ' ' == buf[*pos]) |
return(ROFF_MAX); |
return(ROFF_MAX); |
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/* |
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* We stop the macro parse at an escape, tab, space, or nil. |
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* However, `\}' is also a valid macro, so make sure we don't |
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* clobber it by seeing the `\' as the end of token. |
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*/ |
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mac = buf + *pos; |
mac = buf + *pos; |
maclen = strcspn(mac, " \\\t\0"); |
maclen = strcspn(mac + 1, " \\\t\0") + 1; |
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t = (r->current_string = roff_getstrn(r, mac, maclen)) |
t = (r->current_string = roff_getstrn(r, mac, maclen)) |
? ROFF_USERDEF : roff_hash_find(mac, maclen); |
? ROFF_USERDEF : roff_hash_find(mac, maclen); |
Line 853 roff_cond_sub(ROFF_ARGS) |
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Line 905 roff_cond_sub(ROFF_ARGS) |
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*/ |
*/ |
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if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) { |
if (ROFF_MAX == (t = roff_parse(r, *bufp, &pos))) { |
/* |
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* Jump through hoops to detect a \}, because it could |
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* be (say) \\}, which is something completely |
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* different. |
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*/ |
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ep = &(*bufp)[pos]; |
ep = &(*bufp)[pos]; |
for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { |
for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { |
ep++; |
ep++; |
if ('}' != *ep) |
if ('}' != *ep) |
continue; |
continue; |
*--ep = '\0'; |
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/* |
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* Make the \} go away. |
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* This is a little haphazard, as it's not quite |
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* clear how nroff does this. |
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* If we're at the end of line, then just chop |
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* off the \} and resize the buffer. |
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* If we aren't, then conver it to spaces. |
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*/ |
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if ('\0' == *(ep + 1)) { |
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*--ep = '\0'; |
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*szp -= 2; |
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} else |
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*(ep - 1) = *ep = ' '; |
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roff_ccond(r, ROFF_ccond, bufp, szp, |
roff_ccond(r, ROFF_ccond, bufp, szp, |
ln, pos, pos + 2, offs); |
ln, pos, pos + 2, offs); |
break; |
break; |
Line 887 roff_cond_sub(ROFF_ARGS) |
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Line 949 roff_cond_sub(ROFF_ARGS) |
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ln, ppos, pos, offs)); |
ln, ppos, pos, offs)); |
} |
} |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_cond_text(ROFF_ARGS) |
roff_cond_text(ROFF_ARGS) |
{ |
{ |
char *ep, *st; |
char *ep; |
enum roffrule rr; |
enum roffrule rr; |
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rr = r->last->rule; |
rr = r->last->rule; |
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roffnode_cleanscope(r); |
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/* |
ep = &(*bufp)[pos]; |
* We display the value of the text if out current evaluation |
for ( ; NULL != (ep = strchr(ep, '\\')); ep++) { |
* scope permits us to do so. |
ep++; |
*/ |
if ('}' != *ep) |
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continue; |
/* FIXME: use roff_ccond? */ |
*ep = '&'; |
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roff_ccond(r, ROFF_ccond, bufp, szp, |
st = &(*bufp)[pos]; |
ln, pos, pos + 2, offs); |
if (NULL == (ep = strstr(st, "\\}"))) { |
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roffnode_cleanscope(r); |
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return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
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} |
} |
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if (ep == st || (ep > st && '\\' != *(ep - 1))) |
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roffnode_pop(r); |
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roffnode_cleanscope(r); |
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return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
} |
} |
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static enum roffrule |
static enum roffrule |
roff_evalcond(const char *v, int *pos) |
roff_evalcond(const char *v, int *pos) |
{ |
{ |
Line 1072 roff_ds(ROFF_ARGS) |
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Line 1125 roff_ds(ROFF_ARGS) |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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int |
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roff_regisset(const struct roff *r, enum regs reg) |
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{ |
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return(r->regs[(int)reg].set); |
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} |
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unsigned int |
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roff_regget(const struct roff *r, enum regs reg) |
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{ |
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return(r->regs[(int)reg].u); |
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} |
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void |
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roff_regunset(struct roff *r, enum regs reg) |
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{ |
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r->regs[(int)reg].set = 0; |
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} |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_nr(ROFF_ARGS) |
roff_nr(ROFF_ARGS) |
Line 1080 roff_nr(ROFF_ARGS) |
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Line 1153 roff_nr(ROFF_ARGS) |
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const char *key; |
const char *key; |
char *val; |
char *val; |
int iv; |
int iv; |
struct reg *rg; |
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val = *bufp + pos; |
val = *bufp + pos; |
key = roff_getname(r, &val, ln, pos); |
key = roff_getname(r, &val, ln, pos); |
rg = r->regs->regs; |
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if (0 == strcmp(key, "nS")) { |
if (0 == strcmp(key, "nS")) { |
rg[(int)REG_nS].set = 1; |
r->regs[(int)REG_nS].set = 1; |
if ((iv = mandoc_strntou(val, strlen(val), 10)) >= 0) |
if ((iv = mandoc_strntoi(val, strlen(val), 10)) >= 0) |
rg[REG_nS].v.u = (unsigned)iv; |
r->regs[(int)REG_nS].u = (unsigned)iv; |
else |
else |
rg[(int)REG_nS].v.u = 0u; |
r->regs[(int)REG_nS].u = 0u; |
} |
} |
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return(ROFF_IGN); |
return(ROFF_IGN); |
Line 1121 roff_TE(ROFF_ARGS) |
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Line 1192 roff_TE(ROFF_ARGS) |
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if (NULL == r->tbl) |
if (NULL == r->tbl) |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
mandoc_msg(MANDOCERR_NOSCOPE, r->parse, ln, ppos, NULL); |
else |
else |
tbl_end(r->tbl); |
tbl_end(&r->tbl); |
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r->tbl = NULL; |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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Line 1140 roff_T_(ROFF_ARGS) |
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Line 1210 roff_T_(ROFF_ARGS) |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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/* ARGSUSED */ |
int |
static enum rofferr |
roff_closeeqn(struct roff *r) |
roff_EQ(ROFF_ARGS) |
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{ |
{ |
struct eqn_node *e; |
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return(r->eqn && ROFF_EQN == eqn_end(&r->eqn) ? 1 : 0); |
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} |
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void |
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roff_openeqn(struct roff *r, const char *name, int line, |
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int offs, const char *buf) |
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{ |
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struct eqn_node *e; |
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int poff; |
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assert(NULL == r->eqn); |
assert(NULL == r->eqn); |
e = eqn_alloc(ppos, ln); |
e = eqn_alloc(name, offs, line, r->parse); |
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if (r->last_eqn) |
if (r->last_eqn) |
r->last_eqn->next = e; |
r->last_eqn->next = e; |
Line 1155 roff_EQ(ROFF_ARGS) |
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Line 1233 roff_EQ(ROFF_ARGS) |
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r->first_eqn = r->last_eqn = e; |
r->first_eqn = r->last_eqn = e; |
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r->eqn = r->last_eqn = e; |
r->eqn = r->last_eqn = e; |
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if (buf) { |
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poff = 0; |
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eqn_read(&r->eqn, line, buf, offs, &poff); |
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} |
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} |
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/* ARGSUSED */ |
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static enum rofferr |
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roff_EQ(ROFF_ARGS) |
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{ |
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roff_openeqn(r, *bufp + pos, ln, ppos, NULL); |
return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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Line 1175 roff_TS(ROFF_ARGS) |
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Line 1266 roff_TS(ROFF_ARGS) |
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if (r->tbl) { |
if (r->tbl) { |
mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL); |
mandoc_msg(MANDOCERR_SCOPEBROKEN, r->parse, ln, ppos, NULL); |
tbl_end(r->tbl); |
tbl_end(&r->tbl); |
} |
} |
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t = tbl_alloc(ppos, ln, r->parse); |
t = tbl_alloc(ppos, ln, r->parse); |
Line 1410 roff_eqn(const struct roff *r) |
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Line 1501 roff_eqn(const struct roff *r) |
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{ |
{ |
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return(r->last_eqn ? &r->last_eqn->eqn : NULL); |
return(r->last_eqn ? &r->last_eqn->eqn : NULL); |
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} |
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char |
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roff_eqndelim(const struct roff *r) |
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{ |
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return('\0'); |
} |
} |