version 1.82, 2010/05/17 02:01:05 |
version 1.87, 2010/06/09 20:00:38 |
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#endif |
#endif |
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#include <assert.h> |
#include <assert.h> |
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#include <ctype.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
#include <stdio.h> |
#include <stdio.h> |
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ROFF_de, |
ROFF_de, |
ROFF_dei, |
ROFF_dei, |
ROFF_de1, |
ROFF_de1, |
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ROFF_ds, |
ROFF_el, |
ROFF_el, |
ROFF_ie, |
ROFF_ie, |
ROFF_if, |
ROFF_if, |
ROFF_ig, |
ROFF_ig, |
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ROFF_rm, |
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ROFF_tr, |
ROFF_cblock, |
ROFF_cblock, |
ROFF_ccond, |
ROFF_ccond, |
ROFF_MAX |
ROFF_MAX |
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roffproc sub; /* process as child of macro */ |
roffproc sub; /* process as child of macro */ |
int flags; |
int flags; |
#define ROFFMAC_STRUCT (1 << 0) /* always interpret */ |
#define ROFFMAC_STRUCT (1 << 0) /* always interpret */ |
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struct roffmac *next; |
}; |
}; |
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static enum rofferr roff_block(ROFF_ARGS); |
static enum rofferr roff_block(ROFF_ARGS); |
Line 98 static enum rofferr roff_ccond(ROFF_ARGS); |
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Line 103 static enum rofferr roff_ccond(ROFF_ARGS); |
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static enum rofferr roff_cond(ROFF_ARGS); |
static enum rofferr roff_cond(ROFF_ARGS); |
static enum rofferr roff_cond_text(ROFF_ARGS); |
static enum rofferr roff_cond_text(ROFF_ARGS); |
static enum rofferr roff_cond_sub(ROFF_ARGS); |
static enum rofferr roff_cond_sub(ROFF_ARGS); |
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static enum rofferr roff_line(ROFF_ARGS); |
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const struct roffmac roffs[ROFF_MAX] = { |
/* See roff_hash_find() */ |
{ "am", roff_block, roff_block_text, roff_block_sub, 0 }, |
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{ "ami", roff_block, roff_block_text, roff_block_sub, 0 }, |
#define ASCII_HI 126 |
{ "am1", roff_block, roff_block_text, roff_block_sub, 0 }, |
#define ASCII_LO 33 |
{ "de", roff_block, roff_block_text, roff_block_sub, 0 }, |
#define HASHWIDTH (ASCII_HI - ASCII_LO + 1) |
{ "dei", roff_block, roff_block_text, roff_block_sub, 0 }, |
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{ "de1", roff_block, roff_block_text, roff_block_sub, 0 }, |
static struct roffmac *hash[HASHWIDTH]; |
{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, |
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{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, |
static struct roffmac roffs[ROFF_MAX] = { |
{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, |
{ "am", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "ig", roff_block, roff_block_text, roff_block_sub, 0 }, |
{ "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ ".", roff_cblock, NULL, NULL, 0 }, |
{ "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
{ "\\}", roff_ccond, NULL, NULL, 0 }, |
{ "de", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "ds", roff_line, NULL, NULL, 0, NULL }, |
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{ "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL }, |
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{ "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL }, |
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{ "rm", roff_line, NULL, NULL, 0, NULL }, |
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{ "tr", roff_line, NULL, NULL, 0, NULL }, |
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{ ".", roff_cblock, NULL, NULL, 0, NULL }, |
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{ "\\}", roff_ccond, NULL, NULL, 0, NULL }, |
}; |
}; |
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static void roff_free1(struct roff *); |
static void roff_free1(struct roff *); |
static enum rofft roff_hash_find(const char *); |
static enum rofft roff_hash_find(const char *); |
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static void roff_hash_init(void); |
static void roffnode_cleanscope(struct roff *); |
static void roffnode_cleanscope(struct roff *); |
static int roffnode_push(struct roff *, |
static int roffnode_push(struct roff *, |
enum rofft, int, int); |
enum rofft, int, int); |
static void roffnode_pop(struct roff *); |
static void roffnode_pop(struct roff *); |
static enum rofft roff_parse(const char *, int *); |
static enum rofft roff_parse(const char *, int *); |
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/* See roff_hash_find() */ |
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#define ROFF_HASH(p) (p[0] - ASCII_LO) |
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static void |
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roff_hash_init(void) |
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{ |
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struct roffmac *n; |
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int buc, i; |
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for (i = 0; i < (int)ROFF_MAX; i++) { |
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assert(roffs[i].name[0] >= ASCII_LO); |
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assert(roffs[i].name[0] <= ASCII_HI); |
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buc = ROFF_HASH(roffs[i].name); |
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if (NULL != (n = hash[buc])) { |
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for ( ; n->next; n = n->next) |
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/* Do nothing. */ ; |
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n->next = &roffs[i]; |
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} else |
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hash[buc] = &roffs[i]; |
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} |
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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 130 static enum rofft roff_parse(const char *, int *); |
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Line 172 static enum rofft roff_parse(const char *, int *); |
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static enum rofft |
static enum rofft |
roff_hash_find(const char *p) |
roff_hash_find(const char *p) |
{ |
{ |
int i; |
int buc; |
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struct roffmac *n; |
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/* FIXME: make this be fast and efficient. */ |
/* |
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* libroff has an extremely simple hashtable, for the time |
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* being, which simply keys on the first character, which must |
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* be printable, then walks a chain. It works well enough until |
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* optimised. |
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*/ |
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for (i = 0; i < (int)ROFF_MAX; i++) |
if (p[0] < ASCII_LO || p[0] > ASCII_HI) |
if (0 == strcmp(roffs[i].name, p)) |
return(ROFF_MAX); |
return((enum rofft)i); |
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buc = ROFF_HASH(p); |
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if (NULL == (n = hash[buc])) |
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return(ROFF_MAX); |
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for ( ; n; n = n->next) |
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if (0 == strcmp(n->name, p)) |
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return((enum rofft)(n - roffs)); |
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return(ROFF_MAX); |
return(ROFF_MAX); |
} |
} |
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Line 229 roff_alloc(const mandocmsg msg, void *data) |
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Line 284 roff_alloc(const mandocmsg msg, void *data) |
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r->msg = msg; |
r->msg = msg; |
r->data = data; |
r->data = data; |
r->rstackpos = -1; |
r->rstackpos = -1; |
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roff_hash_init(); |
return(r); |
return(r); |
} |
} |
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Line 564 roff_cond_sub(ROFF_ARGS) |
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Line 621 roff_cond_sub(ROFF_ARGS) |
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{ |
{ |
enum rofft t; |
enum rofft t; |
enum roffrule rr; |
enum roffrule rr; |
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struct roffnode *l; |
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ppos = pos; |
ppos = pos; |
rr = r->last->rule; |
rr = r->last->rule; |
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/* |
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* Clean out scope. If we've closed ourselves, then don't |
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* continue. |
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*/ |
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l = r->last; |
roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
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if (l != r->last) |
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return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
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if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) |
if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) |
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
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Line 609 roff_cond_text(ROFF_ARGS) |
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Line 676 roff_cond_text(ROFF_ARGS) |
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return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
return(ROFFRULE_DENY == rr ? ROFF_IGN : ROFF_CONT); |
} |
} |
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if (ep > st && '\\' != *(ep - 1)) |
if (ep == st || (ep > st && '\\' != *(ep - 1))) |
roffnode_pop(r); |
roffnode_pop(r); |
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roffnode_cleanscope(r); |
roffnode_cleanscope(r); |
Line 621 roff_cond_text(ROFF_ARGS) |
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Line 688 roff_cond_text(ROFF_ARGS) |
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static enum rofferr |
static enum rofferr |
roff_cond(ROFF_ARGS) |
roff_cond(ROFF_ARGS) |
{ |
{ |
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int cpos; /* position of the condition */ |
int sv; |
int sv; |
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/* Stack overflow! */ |
/* Stack overflow! */ |
Line 630 roff_cond(ROFF_ARGS) |
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Line 698 roff_cond(ROFF_ARGS) |
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return(ROFF_ERR); |
return(ROFF_ERR); |
} |
} |
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cpos = pos; |
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if (ROFF_if == tok || ROFF_ie == tok) { |
if (ROFF_if == tok || ROFF_ie == tok) { |
/* |
/* |
* Read ahead past the conditional. FIXME: this does |
* Read ahead past the conditional. FIXME: this does |
Line 660 roff_cond(ROFF_ARGS) |
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Line 730 roff_cond(ROFF_ARGS) |
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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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/* TODO: here we would evaluate the conditional. */ |
/* XXX: Implement more conditionals. */ |
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if (ROFF_el == tok) { |
if (ROFF_if == tok || ROFF_ie == tok) |
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r->last->rule = 'n' == (*bufp)[cpos] ? |
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ROFFRULE_ALLOW : ROFFRULE_DENY; |
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else if (ROFF_el == tok) { |
/* |
/* |
* An `.el' will get the value of the current rstack |
* An `.el' will get the value of the current rstack |
* entry set in prior `ie' calls or defaults to DENY. |
* entry set in prior `ie' calls or defaults to DENY. |
Line 671 roff_cond(ROFF_ARGS) |
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Line 744 roff_cond(ROFF_ARGS) |
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r->last->rule = ROFFRULE_DENY; |
r->last->rule = ROFFRULE_DENY; |
else |
else |
r->last->rule = r->rstack[r->rstackpos]; |
r->last->rule = r->rstack[r->rstackpos]; |
} else if (ROFF_ie == tok) { |
} |
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if (ROFF_ie == tok) { |
/* |
/* |
* An if-else will put the NEGATION of the current |
* An if-else will put the NEGATION of the current |
* evaluated conditional into the stack. |
* evaluated conditional into the stack. |
Line 682 roff_cond(ROFF_ARGS) |
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Line 756 roff_cond(ROFF_ARGS) |
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else |
else |
r->rstack[r->rstackpos] = ROFFRULE_DENY; |
r->rstack[r->rstackpos] = ROFFRULE_DENY; |
} |
} |
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if (r->last->parent && ROFFRULE_DENY == r->last->parent->rule) |
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r->last->rule = ROFFRULE_DENY; |
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r->last->endspan = 1; |
r->last->endspan = 1; |
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Line 702 roff_cond(ROFF_ARGS) |
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Line 778 roff_cond(ROFF_ARGS) |
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*offs = pos; |
*offs = pos; |
return(ROFF_RERUN); |
return(ROFF_RERUN); |
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} |
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/* ARGSUSED */ |
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static enum rofferr |
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roff_line(ROFF_ARGS) |
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{ |
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return(ROFF_IGN); |
} |
} |