version 1.1, 2008/12/12 10:11:10 |
version 1.2, 2008/12/15 01:54:58 |
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
* PERFORMANCE OF THIS SOFTWARE. |
* PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
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#include <assert.h> |
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#include <ctype.h> |
#include <stdlib.h> |
#include <stdlib.h> |
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#include <stdio.h> |
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#include "roff.h" |
#include "private.h" |
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#define _C(p) ((const char **)p) |
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static int isdelim(const char *); |
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static int args_next(struct mdoc *, int, int *, char *, char **); |
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static int append_text(struct mdoc *, int, int, int, char *[]); |
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static int append_scoped(struct mdoc *, int, int, int, char *[]); |
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static int |
static int |
macro_args_next(struct rofftree *tree, int *pos, char *buf, char **v) |
isdelim(const char *p) |
{ |
{ |
int i; |
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if (0 == *p) |
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return(0); |
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if (0 != *(p + 1)) |
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return(0); |
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switch (*p) { |
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case('{'): |
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/* FALLTHROUGH */ |
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case('.'): |
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/* FALLTHROUGH */ |
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case(','): |
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/* FALLTHROUGH */ |
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case(';'): |
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/* FALLTHROUGH */ |
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case(':'): |
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/* FALLTHROUGH */ |
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case('?'): |
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/* FALLTHROUGH */ |
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case('!'): |
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/* FALLTHROUGH */ |
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case('('): |
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/* FALLTHROUGH */ |
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case(')'): |
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/* FALLTHROUGH */ |
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case('['): |
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/* FALLTHROUGH */ |
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case(']'): |
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/* FALLTHROUGH */ |
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case('}'): |
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return(1); |
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default: |
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break; |
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} |
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return(0); |
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} |
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static int |
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args_next(struct mdoc *mdoc, int tok, |
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int *pos, char *buf, char **v) |
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{ |
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if (0 == buf[*pos]) |
if (0 == buf[*pos]) |
return(0); |
return(0); |
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assert( ! isspace(buf[*pos])); |
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if ('\"' == buf[*pos]) { |
if ('\"' == buf[*pos]) { |
/* Syntax error: quotation marks not allowed. */ |
(void)mdoc_err(mdoc, tok, *pos, ERR_SYNTAX_QUOTE); |
return(-1); |
return(-1); |
} |
} |
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*v = &buf[*pos]; |
*v = &buf[*pos]; |
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/* Scan ahead to end of token. */ |
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while (buf[*pos] && ! isspace(buf[*pos])) |
while (buf[*pos] && ! isspace(buf[*pos])) |
(*pos)++; |
(*pos)++; |
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if (buf[*pos + 1] && '\\' == buf[*pos]) { |
if (buf[*pos] && buf[*pos + 1] && '\\' == buf[*pos]) { |
/* Syntax error: escaped whitespace not allowed. */ |
(void)mdoc_err(mdoc, tok, *pos, ERR_SYNTAX_WS); |
return(-1); |
return(-1); |
} |
} |
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buf[i] = 0; |
if (0 == buf[*pos]) |
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return(1); |
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/* Scan ahead over trailing whitespace. */ |
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buf[(*pos)++] = 0; |
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while (buf[*pos] && isspace(buf[*pos])) |
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(*pos)++; |
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if (0 == buf[*pos]) |
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if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_WS_EOLN)) |
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return(-1); |
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return(1); |
return(1); |
} |
} |
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/* |
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* Parses the following: |
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* |
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* .Xx foo bar baz ; foo "bar baz" ; ; |
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* ^---------- ^---------- |
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*/ |
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static int |
static int |
macro_fl(struct rofftree *tree, int tok, int *pos, char *buf) |
append_scoped(struct mdoc *mdoc, int tok, int pos, int sz, char *args[]) |
{ |
{ |
int i, j, c, first; |
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char *args[ROFF_MAXLINEARG]; |
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first = *pos == 0; |
args[sz] = NULL; |
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mdoc_block_alloc(mdoc, pos, tok, 0, NULL); |
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mdoc_head_alloc(mdoc, pos, tok, sz, _C(args)); |
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mdoc_body_alloc(mdoc, pos, tok); |
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return(1); |
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} |
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for (j = 0; ; ) { |
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i = *pos; |
static int |
c = macro_args_next(tree, *i, buf, args[j]); |
append_text(struct mdoc *mdoc, int tok, int pos, int sz, char *args[]) |
if (-1 == c) |
{ |
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args[sz] = NULL; |
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switch (tok) { |
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/* ======= ADD MORE MACRO ARGUMENT-LIMITS BELOW. ======= */ |
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case (MDOC_Ft): |
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/* FALLTHROUGH */ |
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case (MDOC_Li): |
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/* FALLTHROUGH */ |
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case (MDOC_Ms): |
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/* FALLTHROUGH */ |
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case (MDOC_Pa): |
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/* FALLTHROUGH */ |
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case (MDOC_Tn): |
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if (0 == sz && ! mdoc_warn(mdoc, tok, pos, WARN_ARGS_GE1)) |
return(0); |
return(0); |
if (0 == c) |
mdoc_elem_alloc(mdoc, pos, tok, 0, NULL, sz, _C(args)); |
break; |
return(1); |
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/* Break at the next command. */ |
case (MDOC_Ar): |
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/* FALLTHROUGH */ |
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case (MDOC_Cm): |
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/* FALLTHROUGH */ |
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case (MDOC_Fl): |
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mdoc_elem_alloc(mdoc, pos, tok, 0, NULL, sz, _C(args)); |
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return(1); |
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if (ROFF_MAX != (c = rofffindcallable(args[pos]))) { |
case (MDOC_Ad): |
if ( ! macro(tree, tok, argc, argv, i, p)) |
/* FALLTHROUGH */ |
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case (MDOC_Em): |
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/* FALLTHROUGH */ |
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case (MDOC_Er): |
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/* FALLTHROUGH */ |
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case (MDOC_Ev): |
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/* FALLTHROUGH */ |
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case (MDOC_Fa): |
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/* FALLTHROUGH */ |
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case (MDOC_Dv): |
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/* FALLTHROUGH */ |
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case (MDOC_Ic): |
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/* FALLTHROUGH */ |
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case (MDOC_Va): |
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/* FALLTHROUGH */ |
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case (MDOC_Vt): |
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if (0 == sz) |
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return(mdoc_err(mdoc, tok, pos, ERR_ARGS_GE1)); |
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mdoc_elem_alloc(mdoc, pos, tok, 0, NULL, sz, _C(args)); |
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return(1); |
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/* ======= ADD MORE MACRO ARGUMENT-LIMITS ABOVE. ======= */ |
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default: |
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break; |
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} |
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abort(); |
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/* NOTREACHED */ |
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} |
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int |
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macro_text(struct mdoc *mdoc, int tok, int ppos, int *pos, char *buf) |
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{ |
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int lastarg, j, c, lasttok, lastpunct; |
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char *args[MDOC_LINEARG_MAX], *p; |
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lasttok = ppos; |
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lastpunct = 0; |
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j = 0; |
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again: |
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lastarg = *pos; |
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c = args_next(mdoc, tok, pos, buf, &args[j]); |
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if (-1 == c) |
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return(0); |
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if (0 == c && ! lastpunct) |
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return(append_text(mdoc, tok, lasttok, j, args)); |
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else if (0 == c) |
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return(1); |
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/* Command found. */ |
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if (MDOC_MAX != (c = mdoc_find(mdoc, args[j]))) { |
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if ( ! lastpunct) |
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if ( ! append_text(mdoc, tok, lasttok, j, args)) |
return(0); |
return(0); |
if ( ! parse(tree, c, pos, args)) |
return(mdoc_macro(mdoc, c, lastarg, pos, buf)); |
return(0); |
} |
break; |
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} |
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/* Continue if we're just words. */ |
/* Word found. */ |
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if ( ! roffispunct(args[pos])) { |
if ( ! isdelim(args[j])) { |
i++; |
j++; |
continue; |
goto again; |
} |
} |
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/* Break if there's only remaining punctuation. */ |
/* Punctuation found. */ |
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if (args[pos + 1] && roffispunct(args[pos + 1])) |
p = args[j]; /* Save argument (NULL-ified in append). */ |
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if ( ! lastpunct) |
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if ( ! append_text(mdoc, tok, lasttok, j, args)) |
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return(0); |
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args[j] = p; |
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mdoc_word_alloc(mdoc, lastarg, args[j]); |
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lastpunct = 1; |
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j = 0; |
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goto again; |
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/* NOTREACHED */ |
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} |
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int |
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macro_scoped_implicit(struct mdoc *mdoc, |
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int tok, int ppos, int *pos, char *buf) |
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{ |
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int j, c, lastarg, t; |
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char *args[MDOC_LINEARG_MAX]; |
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struct mdoc_node *n; |
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/* |
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* Look for an implicit parent. |
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*/ |
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assert( ! (MDOC_EXPLICIT & mdoc_macros[tok].flags)); |
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for (n = mdoc->last; n; n = n->parent) { |
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if (MDOC_BLOCK != n->type) |
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continue; |
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if (tok == (t = n->data.block.tok)) |
break; |
break; |
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if ( ! (MDOC_EXPLICIT & mdoc_macros[t].flags)) |
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continue; |
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return(mdoc_err(mdoc, tok, ppos, ERR_SCOPE_BREAK)); |
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} |
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/* If there are remaining words, start anew. */ |
if (n) { |
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mdoc->last = n; |
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mdoc_msg(mdoc, ppos, "scope: rewound `%s'", |
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mdoc_macronames[tok]); |
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} else |
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mdoc_msg(mdoc, ppos, "scope: new `%s'", |
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mdoc_macronames[tok]); |
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if ( ! macro(tree, tok, argc, argv, i, p)) |
j = 0; |
return(0); |
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/* Spit out the punctuation. */ |
again: |
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if ( ! word(tree, tok, *args++)) |
lastarg = *pos; |
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c = args_next(mdoc, tok, pos, buf, &args[j]); |
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if (-1 == c) |
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return(0); |
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if (0 == c) |
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return(append_scoped(mdoc, tok, ppos, j, args)); |
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/* Command found. */ |
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if (MDOC_MAX != (c = mdoc_find(mdoc, args[j]))) |
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if ( ! mdoc_warn(mdoc, tok, *pos, WARN_SYNTAX_MACLIKE)) |
return(0); |
return(0); |
i++; |
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} |
/* Word found. */ |
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j++; |
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goto again; |
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/* NOTREACHED */ |
} |
} |