version 1.72, 2010/05/15 22:22:51 |
version 1.77, 2010/05/16 19:08:11 |
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#include <assert.h> |
#include <assert.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
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#include <stdio.h> |
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#include "mandoc.h" |
#include "mandoc.h" |
#include "roff.h" |
#include "roff.h" |
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#define ROFF_CTL(c) \ |
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('.' == (c) || '\'' == (c)) |
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#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 { |
ROFF_de, |
ROFF_if, |
ROFF_dei, |
ROFF_ig, |
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ROFF_cblock, |
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ROFF_ccond, |
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#if 0 |
ROFF_am, |
ROFF_am, |
ROFF_ami, |
ROFF_ami, |
ROFF_ig, |
ROFF_de, |
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ROFF_dei, |
ROFF_close, |
ROFF_close, |
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#endif |
ROFF_MAX |
ROFF_MAX |
}; |
}; |
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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; /* custom end-token */ |
char *end; /* end-token: custom */ |
int line; /* parse line */ |
int line; /* parse line */ |
int col; /* parse col */ |
int col; /* parse col */ |
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int endspan; |
}; |
}; |
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#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
#define ROFF_ARGS struct roff *r, /* parse ctx */ \ |
Line 54 struct roffnode { |
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Line 72 struct roffnode { |
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char **bufp, /* input buffer */ \ |
char **bufp, /* input buffer */ \ |
size_t *szp, /* size of input buffer */ \ |
size_t *szp, /* size of input buffer */ \ |
int ln, /* parse line */ \ |
int ln, /* parse line */ \ |
int ppos /* current pos in buffer */ |
int ppos, /* original pos in buffer */ \ |
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int pos, /* current pos in buffer */ \ |
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int *offs /* reset offset of buffer data */ |
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typedef enum rofferr (*roffproc)(ROFF_ARGS); |
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 sub; /* child of control black */ |
roffproc proc; |
roffproc new; /* root of stack (type = ROFF_MAX) */ |
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}; |
}; |
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static enum rofferr roff_new_close(ROFF_ARGS); |
static enum rofferr roff_if(ROFF_ARGS); |
static enum rofferr roff_new_ig(ROFF_ARGS); |
static enum rofferr roff_ig(ROFF_ARGS); |
static enum rofferr roff_sub_ig(ROFF_ARGS); |
static enum rofferr roff_cblock(ROFF_ARGS); |
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static enum rofferr roff_ccond(ROFF_ARGS); |
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const struct roffmac roffs[ROFF_MAX] = { |
const struct roffmac roffs[ROFF_MAX] = { |
{ "de", roff_sub_ig, roff_new_ig }, |
{ "if", roff_if }, |
{ "dei", roff_sub_ig, roff_new_ig }, |
{ "ig", roff_ig }, |
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{ ".", roff_cblock }, |
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{ "\\}", roff_ccond }, |
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#if 0 |
{ "am", roff_sub_ig, roff_new_ig }, |
{ "am", roff_sub_ig, roff_new_ig }, |
{ "ami", roff_sub_ig, roff_new_ig }, |
{ "ami", roff_sub_ig, roff_new_ig }, |
{ "ig", roff_sub_ig, roff_new_ig }, |
{ "de", roff_sub_ig, roff_new_ig }, |
{ ".", NULL, roff_new_close }, |
{ "dei", roff_sub_ig, roff_new_ig }, |
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#endif |
}; |
}; |
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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 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 *); |
Line 113 roffnode_pop(struct roff *r) |
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Line 138 roffnode_pop(struct roff *r) |
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{ |
{ |
struct roffnode *p; |
struct roffnode *p; |
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if (NULL == (p = r->last)) |
assert(r->last); |
return; |
p = r->last; |
r->last = p->parent; |
r->last = r->last->parent; |
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if (p->end) |
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free(p->end); |
free(p); |
free(p); |
} |
} |
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Line 187 roff_alloc(const mandocmsg msg, void *data) |
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Line 214 roff_alloc(const mandocmsg msg, void *data) |
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enum rofferr |
enum rofferr |
roff_parseln(struct roff *r, int ln, char **bufp, size_t *szp) |
roff_parseln(struct roff *r, int ln, |
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char **bufp, size_t *szp, int pos, int *offs) |
{ |
{ |
enum rofft t; |
enum rofft t; |
int ppos; |
int ppos; |
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if (NULL != r->last) { |
if (r->last && ! ROFF_CTL((*bufp)[pos])) { |
/* |
if (ROFF_ig == r->last->tok) |
* If there's a node on the stack, then jump directly |
return(ROFF_IGN); |
* into its processing function. |
roffnode_cleanscope(r); |
*/ |
/* FIXME: this assumes we're discarding! */ |
t = r->last->tok; |
return(ROFF_IGN); |
assert(roffs[t].sub); |
} else if ( ! ROFF_CTL((*bufp)[pos])) |
return((*roffs[t].sub)(r, t, bufp, szp, ln, 0)); |
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} else if ('.' != (*bufp)[0] && NULL == r->last) |
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/* Return when in free text without a context. */ |
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return(ROFF_CONT); |
return(ROFF_CONT); |
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/* There's nothing on the stack: make us anew. */ |
/* There's nothing on the stack: make us anew. */ |
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if (ROFF_MAX == (t = roff_parse(*bufp, &ppos))) |
ppos = pos; |
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if (ROFF_MAX == (t = roff_parse(*bufp, &pos))) { |
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if (r->last && ROFF_ig == r->last->tok) |
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return(ROFF_IGN); |
return(ROFF_CONT); |
return(ROFF_CONT); |
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} |
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assert(roffs[t].new); |
assert(roffs[t].proc); |
return((*roffs[t].new)(r, t, bufp, szp, ln, ppos)); |
return((*roffs[t].proc)(r, t, bufp, szp, ln, ppos, pos, offs)); |
} |
} |
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int |
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roff_endparse(struct roff *r) |
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{ |
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if (NULL == r->last) |
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return(1); |
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return((*r->msg)(MANDOCERR_SCOPEEXIT, r->data, r->last->line, |
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r->last->col, NULL)); |
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} |
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/* |
/* |
* Parse a roff node's type from the input buffer. This must be in the |
* Parse a roff node's type from the input buffer. This must be in the |
* form of ".foo xxx" in the usual way. |
* form of ".foo xxx" in the usual way. |
Line 225 roff_parse(const char *buf, int *pos) |
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Line 265 roff_parse(const char *buf, int *pos) |
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char mac[5]; |
char mac[5]; |
enum rofft t; |
enum rofft t; |
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assert('.' == buf[0]); |
assert(ROFF_CTL(buf[*pos])); |
*pos = 1; |
(*pos)++; |
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while (buf[*pos] && (' ' == buf[*pos] || '\t' == buf[*pos])) |
while (buf[*pos] && (' ' == buf[*pos] || '\t' == buf[*pos])) |
(*pos)++; |
(*pos)++; |
Line 257 roff_parse(const char *buf, int *pos) |
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Line 297 roff_parse(const char *buf, int *pos) |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_sub_ig(ROFF_ARGS) |
roff_cblock(ROFF_ARGS) |
{ |
{ |
int i, j; |
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/* Ignore free-text lines. */ |
if (NULL == r->last) { |
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if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
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return(ROFF_IGN); |
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} |
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if ('.' != (*bufp)[ppos]) |
if (ROFF_ig != r->last->tok) { |
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if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
return(ROFF_IGN); |
return(ROFF_IGN); |
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} |
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if (r->last->end) { |
if ((*bufp)[pos]) |
i = ppos + 1; |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
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return(ROFF_ERR); |
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while ((*bufp)[i] && ' ' == (*bufp)[i]) |
ROFF_MDEBUG(r, "closing ignore block"); |
i++; |
roffnode_pop(r); |
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roffnode_cleanscope(r); |
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return(ROFF_IGN); |
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for (j = 0; r->last->end[j]; i++, j++) |
} |
if ((*bufp)[i] != r->last->end[j]) |
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return(ROFF_IGN); |
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if (r->last->end[j]) |
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return(ROFF_IGN); |
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if ((*bufp)[i] && ' ' != (*bufp)[i]) |
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return(ROFF_IGN); |
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while (' ' == (*bufp)[i]) |
static void |
i++; |
roffnode_cleanscope(struct roff *r) |
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{ |
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} else if (ROFF_close != roff_parse(*bufp, &i)) |
while (r->last) { |
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if (--r->last->endspan < 0) |
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break; |
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ROFF_MDEBUG(r, "closing implicit scope"); |
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roffnode_pop(r); |
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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_ccond(ROFF_ARGS) |
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{ |
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if (NULL == r->last) { |
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if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
return(ROFF_IGN); |
return(ROFF_IGN); |
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} |
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roffnode_pop(r); |
if (ROFF_if != r->last->tok) { |
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if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
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return(ROFF_IGN); |
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} |
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if ('\0' == (*bufp)[i]) |
if (r->last->endspan > -1) { |
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if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
return(ROFF_IGN); |
return(ROFF_IGN); |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, i, NULL)) |
} |
return(ROFF_ERR); |
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if ((*bufp)[pos]) |
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if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
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return(ROFF_ERR); |
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ROFF_MDEBUG(r, "closing explicit scope"); |
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roffnode_pop(r); |
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roffnode_cleanscope(r); |
return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_new_close(ROFF_ARGS) |
roff_ig(ROFF_ARGS) |
{ |
{ |
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if ( ! (*r->msg)(MANDOCERR_NOSCOPE, r->data, ln, ppos, NULL)) |
if ( ! roffnode_push(r, tok, ln, ppos)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
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ROFF_MDEBUG(r, "opening ignore block"); |
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if ((*bufp)[pos]) |
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if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, pos, NULL)) |
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return(ROFF_ERR); |
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return(ROFF_IGN); |
return(ROFF_IGN); |
} |
} |
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/* ARGSUSED */ |
/* ARGSUSED */ |
static enum rofferr |
static enum rofferr |
roff_new_ig(ROFF_ARGS) |
roff_if(ROFF_ARGS) |
{ |
{ |
int i; |
int sv; |
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if ( ! roffnode_push(r, tok, ln, ppos)) |
/* |
return(ROFF_ERR); |
* Read ahead past the conditional. |
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* FIXME: this does not work, as conditionals don't end on |
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* whitespace, but are parsed according to a formal grammar. |
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* It's good enough for now, however. |
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*/ |
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if (ROFF_ig != tok) { |
while ((*bufp)[pos] && ' ' != (*bufp)[pos]) |
while ((*bufp)[ppos] && ' ' != (*bufp)[ppos]) |
pos++; |
ppos++; |
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while (' ' == (*bufp)[ppos]) |
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ppos++; |
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} |
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i = (int)ppos; |
sv = pos; |
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while (' ' == (*bufp)[pos]) |
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pos++; |
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while ((*bufp)[i] && ' ' != (*bufp)[i]) |
/* |
i++; |
* Roff is weird. If we have just white-space after the |
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* conditional, it's considered the BODY and we exit without |
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* really doing anything. Warn about this. It's probably |
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* wrong. |
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*/ |
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if (i == (int)ppos) |
if ('\0' == (*bufp)[pos] && sv != pos) { |
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if ( ! (*r->msg)(MANDOCERR_NOARGS, r->data, ln, ppos, NULL)) |
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return(ROFF_ERR); |
return(ROFF_IGN); |
return(ROFF_IGN); |
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} |
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if ((*bufp)[i]) |
if ( ! roffnode_push(r, tok, ln, ppos)) |
if ( ! (*r->msg)(MANDOCERR_ARGSLOST, r->data, ln, i, NULL)) |
return(ROFF_ERR); |
return(ROFF_ERR); |
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/* |
/* Don't evaluate: just assume NO. */ |
* If the macro has arguments, the first argument (up to the |
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* next whitespace) is interpreted as an argument marking the |
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* macro close. Thus, `.ig foo' will close at `.foo'. |
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* |
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* NOTE: the closing macro `.foo' in the above case is not |
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* allowed to have leading spaces with old groff! Thus `.foo' |
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* != `. foo'. Oh yeah, everything after the `.foo' is lost. |
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* Merry fucking Christmas. |
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*/ |
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r->last->end = malloc((size_t)i - ppos + 1); |
r->last->endspan = 1; |
if (NULL == r->last->end) { |
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(*r->msg)(MANDOCERR_MEM, r->data, ln, ppos, NULL); |
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return(ROFF_ERR); |
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} |
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memcpy(r->last->end, &(*bufp)[ppos], (size_t)i - ppos); |
if ('\\' == (*bufp)[pos] && '{' == (*bufp)[pos + 1]) { |
r->last->end[(size_t)i - ppos] = '\0'; |
ROFF_MDEBUG(r, "opening explicit scope"); |
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r->last->endspan = -1; |
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pos += 2; |
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} else |
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ROFF_MDEBUG(r, "opening implicit scope"); |
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return(ROFF_IGN); |
/* |
} |
* If there are no arguments on the line, the next-line scope is |
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* assumed. |
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*/ |
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if ('\0' == (*bufp)[pos]) |
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return(ROFF_IGN); |
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int |
/* Otherwise re-run the roff parser after recalculating. */ |
roff_endparse(struct roff *r) |
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{ |
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if (NULL == r->last) |
*offs = pos; |
return(1); |
return(ROFF_RERUN); |
return((*r->msg)(MANDOCERR_SCOPEEXIT, r->data, |
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r->last->line, r->last->col, NULL)); |
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} |
} |