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hyung-hwan
2006-07-24 16:23:19 +00:00
parent a7154a8308
commit 4484f7e925
3 changed files with 307 additions and 238 deletions
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510
ase/awk/rex.c
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@ -1,5 +1,5 @@
/*
* $Id: rex.c,v 1.11 2006-07-24 11:58:53 bacon Exp $
* $Id: rex.c,v 1.12 2006-07-24 16:23:19 bacon Exp $
*/
#include <xp/awk/awk_i.h>
@ -87,24 +87,20 @@ typedef const xp_byte_t* (*atom_matcher_t) (
#define CODEAT(rex,pos,type) (*((type*)&(rex)->code.buf[pos]))
static int __compile_expression (xp_awk_rex_t* rex);
static int __compile_pattern (xp_awk_rex_t* rex);
static int __compile_branch (xp_awk_rex_t* rex);
static int __compile_atom (xp_awk_rex_t* rex);
static int __compile_charset (xp_awk_rex_t* rex, struct __code_t* cmd);
static int __compile_bound (xp_awk_rex_t* rex, struct __code_t* cmd);
static int __compile_boundary (xp_awk_rex_t* rex, struct __code_t* cmd);
static int __compile_cclass (xp_awk_rex_t* rex, xp_char_t* cc);
static int __compile_range (xp_awk_rex_t* rex, struct __code_t* cmd);
static int __next_char (xp_awk_rex_t* rex, int level);
static int __add_code (xp_awk_rex_t* rex, void* data, xp_size_t len);
static const xp_byte_t* __print_expression (const xp_byte_t* p);
static const xp_byte_t* __print_branch (const xp_byte_t* p);
static const xp_byte_t* __print_atom (const xp_byte_t* p);
static xp_bool_t __begin_with (
const xp_char_t* str, xp_size_t len, const xp_char_t* what);
static const xp_byte_t* __match_expression (
static const xp_byte_t* __match_pattern (
xp_awk_rex_t* rex, const xp_byte_t* base, struct __match_t* mat);
static const xp_byte_t* __match_branch (
xp_awk_rex_t* rex, const xp_byte_t* base, struct __match_t* mat);
@ -125,9 +121,9 @@ static const xp_byte_t* __match_charset (
static const xp_byte_t* __match_group (
xp_awk_rex_t* rex, const xp_byte_t* base, struct __match_t* mat);
static const xp_byte_t* __match_bound (
static const xp_byte_t* __match_boundary (
xp_awk_rex_t* rex, xp_size_t si, const xp_byte_t* p,
const struct __code_t* cp, struct __match_t* mat);
xp_size_t lbound, xp_size_t ubound, struct __match_t* mat);
static xp_bool_t __test_charset (
const xp_byte_t* p, xp_size_t csc, xp_char_t c);
@ -145,37 +141,42 @@ static xp_bool_t __cc_isspace (xp_char_t c);
static xp_bool_t __cc_isupper (xp_char_t c);
static xp_bool_t __cc_isxdigit (xp_char_t c);
static const xp_byte_t* __print_pattern (const xp_byte_t* p);
static const xp_byte_t* __print_branch (const xp_byte_t* p);
static const xp_byte_t* __print_atom (const xp_byte_t* p);
static struct __char_class_t
{
const xp_char_t* name;
xp_size_t name_len;
xp_bool_t (*func) (xp_char_t c);
};
static struct __char_class_t __char_class [] =
{
{ XP_T("alnum"), __cc_isalnum },
{ XP_T("alpha"), __cc_isalpha },
{ XP_T("blank"), __cc_isblank },
{ XP_T("cntrl"), __cc_iscntrl },
{ XP_T("digit"), __cc_isdigit },
{ XP_T("graph"), __cc_isgraph },
{ XP_T("lower"), __cc_islower },
{ XP_T("print"), __cc_isprint },
{ XP_T("punct"), __cc_ispunct },
{ XP_T("space"), __cc_isspace },
{ XP_T("upper"), __cc_isupper },
{ XP_T("xdigit"), __cc_isxdigit },
{ XP_T("alnum"), 5, __cc_isalnum },
{ XP_T("alpha"), 5, __cc_isalpha },
{ XP_T("blank"), 5, __cc_isblank },
{ XP_T("cntrl"), 5, __cc_iscntrl },
{ XP_T("digit"), 5, __cc_isdigit },
{ XP_T("graph"), 5, __cc_isgraph },
{ XP_T("lower"), 5, __cc_islower },
{ XP_T("print"), 5, __cc_isprint },
{ XP_T("punct"), 5, __cc_ispunct },
{ XP_T("space"), 5, __cc_isspace },
{ XP_T("upper"), 5, __cc_isupper },
{ XP_T("xdigit"), 6, __cc_isxdigit },
/*
{ XP_T("arabic"), __cc_isarabic },
{ XP_T("chinese"), __cc_ischinese },
{ XP_T("english"), __cc_isenglish },
{ XP_T("japanese"), __cc_isjapanese },
{ XP_T("korean"), __cc_iskorean },
{ XP_T("thai"), __cc_isthai },
{ XP_T("arabic"), 6, __cc_isarabic },
{ XP_T("chinese"), 7, __cc_ischinese },
{ XP_T("english"), 7, __cc_isenglish },
{ XP_T("japanese"), 8, __cc_isjapanese },
{ XP_T("korean"), 6, __cc_iskorean },
{ XP_T("thai"), 4, __cc_isthai },
*/
{ XP_NULL, XP_NULL }
{ XP_NULL, 0, XP_NULL }
};
xp_awk_rex_t* xp_awk_rex_open (xp_awk_rex_t* rex)
@ -197,6 +198,7 @@ xp_awk_rex_t* xp_awk_rex_open (xp_awk_rex_t* rex)
return XP_NULL;
}
rex->errnum = XP_AWK_REX_ENOERR;
return rex;
}
@ -218,18 +220,12 @@ int xp_awk_rex_compile (xp_awk_rex_t* rex, const xp_char_t* ptn, xp_size_t len)
rex->code.size = 0;
NEXT_CHAR (rex, LEVEL_TOP);
if (__compile_expression (rex) == -1)
{
/* TODO: clear expression */
xp_printf (XP_T("fuck ........ \n"));
return -1;
}
if (__compile_pattern (rex) == -1) return -1;
if (rex->ptn.curc.type != CT_EOF)
{
/* TODO: error handling */
/* garbage after the expression */
xp_printf (XP_T("garbage after expression\n"));
/* garbage after the patter */
rex->errnum = XP_AWK_REX_EGARBAGE;
return -1;
}
@ -238,7 +234,7 @@ xp_printf (XP_T("code.size = %u\n"), (unsigned int)rex->code.size);
return 0;
}
static int __compile_expression (xp_awk_rex_t* rex)
static int __compile_pattern (xp_awk_rex_t* rex)
{
xp_size_t zero = 0;
xp_size_t old_size;
@ -259,7 +255,7 @@ static int __compile_expression (xp_awk_rex_t* rex)
if (n == -1) return -1;
if (n == 0)
{
/* if the expression is empty, the control reaches here */
/* if the pattern is empty, the control reaches here */
return 0;
}
@ -317,7 +313,7 @@ static int __compile_branch (xp_awk_rex_t* rex)
if (n == 0) break; /* no atom */
n = __compile_bound (rex, cmd);
n = __compile_boundary (rex, cmd);
if (n == -1)
{
rex->code.size = old_size;
@ -325,7 +321,7 @@ static int __compile_branch (xp_awk_rex_t* rex)
}
/* n == 0 no bound character. just continue */
/* n == 1 bound has been applied by compile_bound */
/* n == 1 bound has been applied by compile_boundary */
CODEAT(rex,pos_na,xp_size_t) += 1;
}
@ -353,13 +349,13 @@ static int __compile_atom (xp_awk_rex_t* rex)
NEXT_CHAR (rex, LEVEL_TOP);
n = __compile_expression (rex);
n = __compile_pattern (rex);
if (n == -1) return -1;
if (rex->ptn.curc.type != CT_SPECIAL ||
rex->ptn.curc.value != XP_T(')'))
{
// rex->errnum = XP_AWK_REX_ERPAREN;
rex->errnum = XP_AWK_REX_ERPAREN;
return -1;
}
}
@ -409,8 +405,7 @@ static int __compile_atom (xp_awk_rex_t* rex)
if (rex->ptn.curc.type != CT_SPECIAL ||
rex->ptn.curc.value != XP_T(']'))
{
// TODO
/*rex->errnum = XP_AWK_REX_ERBRACKET;*/
rex->errnum = XP_AWK_REX_ERBRACKET;
return -1;
}
@ -469,11 +464,7 @@ static int __compile_charset (xp_awk_rex_t* rex, struct __code_t* cmd)
rex->ptn.curc.type == CT_NORMAL &&
rex->ptn.curc.value == XP_T(':'))
{
if (__compile_cclass (rex, &c1) == -1)
{
return -1;
}
if (__compile_cclass (rex, &c1) == -1) return -1;
cc = cc | 1;
}
@ -529,7 +520,8 @@ static int __compile_charset (xp_awk_rex_t* rex, struct __code_t* cmd)
else
{
/* invalid range */
xp_printf (XP_T("invalid character set range\n"));
//xp_printf (XP_T("invalid character set range\n"));
rex->errnum = XP_AWK_REX_ECRANGE;
return -1;
}
@ -554,17 +546,19 @@ static int __compile_cclass (xp_awk_rex_t* rex, xp_char_t* cc)
if (ccp->name == XP_NULL)
{
/* wrong class name */
xp_printf (XP_T("wrong class name\n"));
//xp_printf (XP_T("wrong class name\n"));
rex->errnum = XP_AWK_REX_ECCLASS;
return -1;
}
rex->ptn.curp += xp_strlen(ccp->name);
rex->ptn.curp += ccp->name_len;
NEXT_CHAR (rex, LEVEL_CHARSET);
if (rex->ptn.curc.type != CT_NORMAL ||
rex->ptn.curc.value != XP_T(':'))
{
xp_printf (XP_T(": expected\n"));
//xp_printf (XP_T(": expected\n"));
rex->errnum = XP_AWK_REX_ECOLON;
return -1;
}
@ -574,7 +568,8 @@ xp_printf (XP_T(": expected\n"));
if (rex->ptn.curc.type != CT_SPECIAL ||
rex->ptn.curc.value != XP_T(']'))
{
xp_printf (XP_T("] expected\n"));
//xp_printf (XP_T("] expected\n"));
rex->errnum = XP_AWK_REX_ERBRACKET;
return -1;
}
@ -584,7 +579,7 @@ xp_printf (XP_T("] expected\n"));
return 1;
}
static int __compile_bound (xp_awk_rex_t* rex, struct __code_t* cmd)
static int __compile_boundary (xp_awk_rex_t* rex, struct __code_t* cmd)
{
if (rex->ptn.curc.type != CT_SPECIAL) return 0;
@ -623,7 +618,7 @@ static int __compile_bound (xp_awk_rex_t* rex, struct __code_t* cmd)
if (rex->ptn.curc.type != CT_SPECIAL ||
rex->ptn.curc.value != XP_T('}'))
{
// rex->errnum = XP_AWK_REX_ERBRACE
rex->errnum = XP_AWK_REX_ERBRACE;
return -1;
}
@ -668,6 +663,13 @@ static int __compile_range (xp_awk_rex_t* rex, struct __code_t* cmd)
}
else cmd->ubound = BOUND_MAX;
if (cmd->lbound > cmd->ubound)
{
/* invalid boundary range */
rex->errnum = XP_AWK_REX_EBRANGE;
return -1;
}
return 0;
}
@ -687,8 +689,7 @@ static int __next_char (xp_awk_rex_t* rex, int level)
{
if (rex->ptn.curp >= rex->ptn.end)
{
/* unexpected end of expression */
//rex->errnum = XP_AWK_REX_EEND;
rex->errnum = XP_AWK_REX_EEND;
return -1;
}
@ -747,8 +748,7 @@ static int __add_code (xp_awk_rex_t* rex, void* data, xp_size_t len)
tmp = (xp_byte_t*) xp_realloc (rex->code.buf, capa);
if (tmp == XP_NULL)
{
/* TODO: */
/*rex->errnum = XP_AWK_REX_ENOMEM;*/
rex->errnum = XP_AWK_REX_ENOMEM;
return -1;
}
@ -762,144 +762,6 @@ static int __add_code (xp_awk_rex_t* rex, void* data, xp_size_t len)
return 0;
}
void xp_awk_rex_print (xp_awk_rex_t* rex)
{
const xp_byte_t* p;
p = __print_expression (rex->code.buf);
xp_printf (XP_T("\n"));
xp_assert (p == rex->code.buf + rex->code.size);
}
static const xp_byte_t* __print_expression (const xp_byte_t* p)
{
xp_size_t nb, el, i;
nb = *(xp_size_t*)p; p += xp_sizeof(nb);
el = *(xp_size_t*)p; p += xp_sizeof(el);
//xp_printf (XP_T("NA = %u, EL = %u\n"), (unsigned int)nb, (unsigned int)el);
for (i = 0; i < nb; i++)
{
if (i != 0) xp_printf (XP_T("|"));
p = __print_branch (p);
}
return p;
}
static const xp_byte_t* __print_branch (const xp_byte_t* p)
{
xp_size_t na, bl, i;
na = *(xp_size_t*)p; p += xp_sizeof(na);
bl = *(xp_size_t*)p; p += xp_sizeof(bl);
//xp_printf (XP_T("NA = %u, BL = %u\n"), (unsigned int) na, (unsigned int)bl);
for (i = 0; i < na; i++)
{
p = __print_atom (p);
}
return p;
}
static const xp_byte_t* __print_atom (const xp_byte_t* p)
{
const struct __code_t* cp = (const struct __code_t*)p;
if (cp->cmd == CMD_BOL)
{
xp_printf (XP_T("^"));
p += xp_sizeof(*cp);
}
else if (cp->cmd == CMD_EOL)
{
xp_printf (XP_T("$"));
p += xp_sizeof(*cp);
}
else if (cp->cmd == CMD_ANY_CHAR)
{
xp_printf (XP_T("."));
p += xp_sizeof(*cp);
}
else if (cp->cmd == CMD_ORD_CHAR)
{
p += xp_sizeof(*cp);
xp_printf (XP_T("%c"), *(xp_char_t*)p);
p += xp_sizeof(xp_char_t);
}
else if (cp->cmd == CMD_CHARSET)
{
xp_size_t csc, csl, i;
p += xp_sizeof(*cp);
xp_printf (XP_T("["));
if (cp->negate) xp_printf (XP_T("^"));
csc = *(xp_size_t*)p; p += xp_sizeof(csc);
csl = *(xp_size_t*)p; p += xp_sizeof(csl);
for (i = 0; i < csc; i++)
{
xp_char_t c0, c1, c2;
c0 = *(xp_char_t*)p;
p += xp_sizeof(c0);
if (c0 == CHARSET_ONE)
{
c1 = *(xp_char_t*)p;
xp_printf (XP_T("%c"), c1);
}
else if (c0 == CHARSET_RANGE)
{
c1 = *(xp_char_t*)p;
p += xp_sizeof(c1);
c2 = *(xp_char_t*)p;
xp_printf (XP_T("%c-%c"), c1, c2);
}
else if (c0 == CHARSET_CLASS)
{
c1 = *(xp_char_t*)p;
xp_printf (XP_T("[:%s:]"), __char_class[c1].name);
}
else
{
xp_printf (XP_T("FUCK: WRONG CHARSET CODE\n"));
}
p += xp_sizeof(c1);
}
xp_printf (XP_T("]"));
}
else if (cp->cmd == CMD_GROUP)
{
p += xp_sizeof(*cp);
xp_printf (XP_T("("));
p = __print_expression (p);
xp_printf (XP_T(")"));
}
else
{
xp_printf (XP_T("FUCK FUCK FUCK\n"));
}
if (cp->lbound == 0 && cp->ubound == BOUND_MAX)
xp_printf (XP_T("*"));
else if (cp->lbound == 1 && cp->ubound == BOUND_MAX)
xp_printf (XP_T("+"));
else if (cp->lbound == 0 && cp->ubound == 1)
xp_printf (XP_T("?"));
else if (cp->lbound != 1 || cp->ubound != 1)
{
xp_printf (XP_T("{%lu,%lu}"),
(unsigned long)cp->lbound, (unsigned long)cp->ubound);
}
return p;
}
static xp_bool_t __begin_with (
const xp_char_t* str, xp_size_t len, const xp_char_t* what)
{
@ -924,6 +786,13 @@ int xp_awk_rex_match (xp_awk_rex_t* rex,
xp_size_t offset = 0;
struct __match_t mat;
if (rex->code.size == 0)
{
/* no pattern has been compiled */
rex->errnum = XP_AWK_REX_ENOPTN;
return -1;
}
mat.matched = xp_false;
/* store the source string */
@ -934,7 +803,7 @@ int xp_awk_rex_match (xp_awk_rex_t* rex,
while (mat.match_ptr < rex->match.str.end)
{
__match_expression (rex, rex->code.buf, &mat);
__match_pattern (rex, rex->code.buf, &mat);
if (mat.matched)
{
*match_ptr = mat.match_ptr;
@ -948,7 +817,7 @@ int xp_awk_rex_match (xp_awk_rex_t* rex,
return (mat.matched)? 0: -1;
}
static const xp_byte_t* __match_expression (
static const xp_byte_t* __match_pattern (
xp_awk_rex_t* rex, const xp_byte_t* base, struct __match_t* mat)
{
const xp_byte_t* p;
@ -959,7 +828,7 @@ static const xp_byte_t* __match_expression (
nb = *(xp_size_t*)p; p += xp_sizeof(nb);
el = *(xp_size_t*)p; p += xp_sizeof(el);
xp_printf (XP_T("NB = %u, EL = %u\n"), (unsigned)nb, (unsigned)el);
//xp_printf (XP_T("NB = %u, EL = %u\n"), (unsigned)nb, (unsigned)el);
mat->matched = xp_false;
mat->match_len = 0;
@ -989,7 +858,7 @@ static const xp_byte_t* __match_branch (
na = *(xp_size_t*)p; p += xp_sizeof(na);
bl = *(xp_size_t*)p; p += xp_sizeof(bl);
xp_printf (XP_T("NA = %u, BL = %u\n"), (unsigned)na, (unsigned)bl);
//xp_printf (XP_T("NA = %u, BL = %u\n"), (unsigned)na, (unsigned)bl);
/* remember the current branch to work on */
mat->branch = base;
@ -1088,25 +957,40 @@ static const xp_byte_t* __match_any_char (
{
const xp_byte_t* p = base;
const struct __code_t* cp;
xp_size_t si = 0;
xp_size_t si = 0, lbound, ubound;
cp = (const struct __code_t*)p; p += xp_sizeof(*cp);
xp_assert (cp->cmd == CMD_ANY_CHAR);
lbound = cp->lbound;
ubound = cp->ubound;
mat->matched = xp_false;
mat->match_len = 0;
/* merge the same consecutive codes */
while (p < mat->branch_end &&
cp->cmd == ((const struct __code_t*)p)->cmd)
{
lbound += ((const struct __code_t*)p)->lbound;
ubound += ((const struct __code_t*)p)->ubound;
p += xp_sizeof(*cp);
}
//xp_printf (XP_T("lbound = %u, ubound = %u\n"),
//(unsigned int)lbound, (unsigned int)ubound);
/* find the longest match */
while (si < cp->ubound)
while (si < ubound)
{
if (&mat->match_ptr[si] >= rex->match.str.end) break;
si++;
}
xp_printf (XP_T("max si = %d\n"), si);
if (si >= cp->lbound && si <= cp->ubound)
//xp_printf (XP_T("max si = %d\n"), si);
if (si >= lbound && si <= ubound)
{
p = __match_bound (rex, si, p, cp, mat);
p = __match_boundary (rex, si, p, lbound, ubound, mat);
}
return p;
@ -1117,29 +1001,49 @@ static const xp_byte_t* __match_ord_char (
{
const xp_byte_t* p = base;
const struct __code_t* cp;
xp_size_t si = 0;
xp_size_t si = 0, lbound, ubound;
xp_char_t cc;
cp = (const struct __code_t*)p; p += xp_sizeof(*cp);
xp_assert (cp->cmd == CMD_ORD_CHAR);
lbound = cp->lbound;
ubound = cp->ubound;
cc = *(xp_char_t*)p; p += xp_sizeof(cc);
/* merge the same consecutive codes
* for example, a{1,10}a{0,10} is shortened to a{1,20}
*/
while (p < mat->branch_end &&
cp->cmd == ((const struct __code_t*)p)->cmd)
{
if (*(xp_char_t*)(p+xp_sizeof(*cp)) != cc) break;
lbound += ((const struct __code_t*)p)->lbound;
ubound += ((const struct __code_t*)p)->ubound;
p += xp_sizeof(*cp) + xp_sizeof(cc);
}
//xp_printf (XP_T("lbound = %u, ubound = %u\n"),
//(unsigned int)lbound, (unsigned int)ubound);
mat->matched = xp_false;
mat->match_len = 0;
/* find the longest match */
while (si < cp->ubound)
while (si < ubound)
{
if (&mat->match_ptr[si] >= rex->match.str.end) break;
if (cc != mat->match_ptr[si]) break;
si++;
}
xp_printf (XP_T("max si = %d\n"), si);
if (si >= cp->lbound && si <= cp->ubound)
//xp_printf (XP_T("max si = %d\n"), si);
if (si >= lbound && si <= ubound)
{
p = __match_bound (rex, si, p, cp, mat);
p = __match_boundary (rex, si, p, lbound, ubound, mat);
}
return p;
@ -1150,19 +1054,22 @@ static const xp_byte_t* __match_charset (
{
const xp_byte_t* p = base;
const struct __code_t* cp;
xp_size_t si = 0, csc, csl;
xp_size_t si = 0, lbound, ubound, csc, csl;
xp_bool_t n;
cp = (const struct __code_t*)p; p += xp_sizeof(*cp);
xp_assert (cp->cmd == CMD_CHARSET);
lbound = cp->lbound;
ubound = cp->ubound;
csc = *(xp_size_t*)p; p += xp_sizeof(csc);
csl = *(xp_size_t*)p; p += xp_sizeof(csl);
mat->matched = xp_false;
mat->match_len = 0;
while (si < cp->ubound)
while (si < ubound)
{
if (&mat->match_ptr[si] >= rex->match.str.end) break;
@ -1175,9 +1082,9 @@ static const xp_byte_t* __match_charset (
p = p + csl - (xp_sizeof(csc) + xp_sizeof(csl));
if (si >= cp->lbound && si <= cp->ubound)
if (si >= lbound && si <= ubound)
{
p = __match_bound (rex, si, p, cp, mat);
p = __match_boundary (rex, si, p, lbound, ubound, mat);
}
return p;
@ -1196,7 +1103,7 @@ xp_size_t grp_len[100];
cp = (const struct __code_t*)p; p += xp_sizeof(*cp);
xp_assert (cp->cmd == CMD_GROUP);
/* peep at the header of a subexpression */
/* peep at the header of a subpattern */
sub = p;
nb = *(xp_size_t*)p; p += xp_sizeof(nb);
el = *(xp_size_t*)p; p += xp_sizeof(el);
@ -1207,7 +1114,7 @@ xp_size_t grp_len[100];
mat2.match_ptr = mat->match_ptr;
/*
* A grouped expression, unlike other atoms, can match one or more
* A grouped pattern, unlike other atoms, can match one or more
* characters. When it is requested with a variable occurrences,
* the number of characters that have matched at each occurrence
* needs to be remembered for the backtracking purpose.
@ -1236,7 +1143,7 @@ grp_len[si] = 0;
{
if (mat2.match_ptr >= rex->match.str.end) break;
__match_expression (rex, sub, &mat2);
__match_pattern (rex, sub, &mat2);
if (!mat2.matched) break;
grp_len[si+1] = grp_len[si] + mat2.match_len;
@ -1268,7 +1175,7 @@ grp_len[si+1] = grp_len[si] + mat2.match_len;
mat2.branch = mat->branch;
mat2.branch_end = mat->branch_end;
xp_printf (XP_T("GROUP si = %d [%s]\n"), si, mat->match_ptr);
//xp_printf (XP_T("GROUP si = %d [%s]\n"), si, mat->match_ptr);
tmp = __match_branch_body (rex, p, &mat2);
if (mat2.matched)
@ -1290,14 +1197,14 @@ xp_printf (XP_T("GROUP si = %d [%s]\n"), si, mat->match_ptr);
return p;
}
static const xp_byte_t* __match_bound (
static const xp_byte_t* __match_boundary (
xp_awk_rex_t* rex, xp_size_t si, const xp_byte_t* p,
const struct __code_t* cp, struct __match_t* mat)
xp_size_t lbound, xp_size_t ubound, struct __match_t* mat)
{
xp_assert (si >= cp->lbound && si <= cp->ubound);
xp_assert (si >= lbound && si <= ubound);
/* the match has been found */
if (cp->lbound == cp->ubound || p >= mat->branch_end)
if (lbound == ubound || p >= mat->branch_end)
{
/* if the match for fixed occurrences was
* requested or no atoms remain unchecked in
@ -1343,11 +1250,11 @@ static const xp_byte_t* __match_bound (
* xxxyy
*
* This process is repeated until a match is found or si
* becomes less than cp->lbound. (si never becomes less
* than cp->lbound in the implementation below, though)
* becomes less than lbound. (si never becomes less than
* lbound in the implementation below, though)
*/
xp_assert (cp->ubound > cp->lbound);
xp_assert (ubound > lbound);
do
{
@ -1358,7 +1265,7 @@ static const xp_byte_t* __match_bound (
mat2.branch = mat->branch;
mat2.branch_end = mat->branch_end;
xp_printf (XP_T("si = %d [%s]\n"), si, mat->match_ptr);
//xp_printf (XP_T("si = %d [%s]\n"), si, mat->match_ptr);
tmp = __match_branch_body (rex, p, &mat2);
if (mat2.matched)
@ -1369,7 +1276,7 @@ xp_printf (XP_T("si = %d [%s]\n"), si, mat->match_ptr);
break;
}
if (si <= cp->lbound) break;
if (si <= lbound) break;
si--;
}
while (1);
@ -1408,7 +1315,8 @@ xp_bool_t __test_charset (const xp_byte_t* p, xp_size_t csc, xp_char_t c)
}
else
{
xp_printf (XP_T("FUCK: WRONG CHARSET CODE IN MATCH\n"));
xp_assert (!"should never happen - invalid charset code");
break;
}
p += xp_sizeof(c1);
@ -1476,3 +1384,141 @@ static xp_bool_t __cc_isxdigit (xp_char_t c)
{
return xp_isxdigit (c);
}
void xp_awk_rex_print (xp_awk_rex_t* rex)
{
const xp_byte_t* p;
p = __print_pattern (rex->code.buf);
xp_printf (XP_T("\n"));
xp_assert (p == rex->code.buf + rex->code.size);
}
static const xp_byte_t* __print_pattern (const xp_byte_t* p)
{
xp_size_t nb, el, i;
nb = *(xp_size_t*)p; p += xp_sizeof(nb);
el = *(xp_size_t*)p; p += xp_sizeof(el);
//xp_printf (XP_T("NA = %u, EL = %u\n"), (unsigned int)nb, (unsigned int)el);
for (i = 0; i < nb; i++)
{
if (i != 0) xp_printf (XP_T("|"));
p = __print_branch (p);
}
return p;
}
static const xp_byte_t* __print_branch (const xp_byte_t* p)
{
xp_size_t na, bl, i;
na = *(xp_size_t*)p; p += xp_sizeof(na);
bl = *(xp_size_t*)p; p += xp_sizeof(bl);
//xp_printf (XP_T("NA = %u, BL = %u\n"), (unsigned int) na, (unsigned int)bl);
for (i = 0; i < na; i++)
{
p = __print_atom (p);
}
return p;
}
static const xp_byte_t* __print_atom (const xp_byte_t* p)
{
const struct __code_t* cp = (const struct __code_t*)p;
if (cp->cmd == CMD_BOL)
{
xp_printf (XP_T("^"));
p += xp_sizeof(*cp);
}
else if (cp->cmd == CMD_EOL)
{
xp_printf (XP_T("$"));
p += xp_sizeof(*cp);
}
else if (cp->cmd == CMD_ANY_CHAR)
{
xp_printf (XP_T("."));
p += xp_sizeof(*cp);
}
else if (cp->cmd == CMD_ORD_CHAR)
{
p += xp_sizeof(*cp);
xp_printf (XP_T("%c"), *(xp_char_t*)p);
p += xp_sizeof(xp_char_t);
}
else if (cp->cmd == CMD_CHARSET)
{
xp_size_t csc, csl, i;
p += xp_sizeof(*cp);
xp_printf (XP_T("["));
if (cp->negate) xp_printf (XP_T("^"));
csc = *(xp_size_t*)p; p += xp_sizeof(csc);
csl = *(xp_size_t*)p; p += xp_sizeof(csl);
for (i = 0; i < csc; i++)
{
xp_char_t c0, c1, c2;
c0 = *(xp_char_t*)p;
p += xp_sizeof(c0);
if (c0 == CHARSET_ONE)
{
c1 = *(xp_char_t*)p;
xp_printf (XP_T("%c"), c1);
}
else if (c0 == CHARSET_RANGE)
{
c1 = *(xp_char_t*)p;
p += xp_sizeof(c1);
c2 = *(xp_char_t*)p;
xp_printf (XP_T("%c-%c"), c1, c2);
}
else if (c0 == CHARSET_CLASS)
{
c1 = *(xp_char_t*)p;
xp_printf (XP_T("[:%s:]"), __char_class[c1].name);
}
else
{
xp_assert (!"should never happen - invalid charset code");
}
p += xp_sizeof(c1);
}
xp_printf (XP_T("]"));
}
else if (cp->cmd == CMD_GROUP)
{
p += xp_sizeof(*cp);
xp_printf (XP_T("("));
p = __print_pattern (p);
xp_printf (XP_T(")"));
}
else
{
xp_assert (!"should never happen - invalid atom code");
}
if (cp->lbound == 0 && cp->ubound == BOUND_MAX)
xp_printf (XP_T("*"));
else if (cp->lbound == 1 && cp->ubound == BOUND_MAX)
xp_printf (XP_T("+"));
else if (cp->lbound == 0 && cp->ubound == 1)
xp_printf (XP_T("?"));
else if (cp->lbound != 1 || cp->ubound != 1)
{
xp_printf (XP_T("{%lu,%lu}"),
(unsigned long)cp->lbound, (unsigned long)cp->ubound);
}
return p;
}

27
ase/awk/rex.h
View File

@ -1,5 +1,5 @@
/*
* $Id: rex.h,v 1.6 2006-07-24 11:58:54 bacon Exp $
* $Id: rex.h,v 1.7 2006-07-24 16:23:19 bacon Exp $
**/
#ifndef _XP_AWK_REX_H_
@ -67,24 +67,43 @@ struct xp_awk_rex_t
} str;
} match;
int errnum;
xp_bool_t __dynamic;
};
enum
{
XP_AWK_REX_ENOERR, /* no error */
XP_AWK_REX_ENOMEM, /* ran out of memory */
XP_AWK_REX_ENOPTN, /* no pattern compiled */
XP_AWK_REX_ERPAREN, /* a right parenthesis is expected */
XP_AWK_REX_ERBRACKET, /* a right bracket is expected */
XP_AWK_REX_ERBRACE, /* a right brace is expected */
XP_AWK_REX_ECOLON, /* a colon is expected */
XP_AWK_REX_ECRANGE, /* invalid character range */
XP_AWK_REX_ECCLASS, /* invalid character class */
XP_AWK_REX_EBRANGE, /* invalid boundary range */
XP_AWK_REX_EEND, /* unexpected end of the pattern */
XP_AWK_REX_EGARBAGE /* garbage after the pattern */
};
#ifdef __cplusplus
extern "C" {
#endif
xp_awk_rex_t* xp_awk_rex_open (xp_awk_rex_t* rex);
void xp_awk_rex_close (xp_awk_rex_t* rex);
void xp_awk_rex_clear (xp_awk_rex_t* rex);
int xp_awk_rex_compile (xp_awk_rex_t* rex, const xp_char_t* ptn, xp_size_t len);
void xp_awk_rex_print (xp_awk_rex_t* rex);
int xp_awk_rex_compile (
xp_awk_rex_t* rex, const xp_char_t* ptn, xp_size_t len);
int xp_awk_rex_match (xp_awk_rex_t* rex,
const xp_char_t* str, xp_size_t len,
const xp_char_t** match_ptr, xp_size_t* match_len);
void xp_awk_rex_print (xp_awk_rex_t* rex);
#ifdef __cplusplus
}
#endif

8
ase/test/awk/rex.c
View File

@ -25,7 +25,9 @@ int xp_main (int argc, const xp_char_t* argv[])
//ptn = XP_T("^he.llo(jo(in|kk)s|com)+h*e{1,40}abc|[^abc][de-f]|^he.llo(jo(in|kk)s|com)+h*e{1,40}abc|[^abc][de-f]");
//ptn = XP_T("^he.llo(jo(in|kk)s|com)+h*e{1,40}abc|[^abc][de-f]");
//ptn = XP_T("^he.llo(jo(in|kk)s|com)|[^x[:space:][:alpha:]j][^abc][de-f]|^he.llo(jo(in|kk)s|com)|[^x[:space:][:alpha:]j][^abc][de-f]");
ptn = XP_T("^.{0,2}.z[^[:space:]]+(abc|zzz){1,2}khg");
//ptn = XP_T("^.{0,2}.z[^[:space:]]+(abc|zzz){1,2}khg");
//
ptn = XP_T("a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}"); //a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}a{1,10}");
if (xp_awk_rex_compile (rex, ptn, xp_strlen(ptn)) == -1)
{
xp_printf (XP_T("cannot compile pattern...\n"));
@ -36,10 +38,12 @@ int xp_main (int argc, const xp_char_t* argv[])
xp_awk_rex_print (rex);
{
const xp_char_t* str = XP_T("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
const xp_char_t* match_ptr;
xp_size_t match_len;
//if (xp_awk_rex_match (rex, XP_T("azhabc"), 6, &match_ptr, &match_len) == 0)
if (xp_awk_rex_match (rex, XP_T("azhzzzabckhgi"), 13, &match_ptr, &match_len) == 0)
//if (xp_awk_rex_match (rex, XP_T("azhzzzabckhgi"), 13, &match_ptr, &match_len) == 0)
if (xp_awk_rex_match (rex, str, xp_strlen(str), &match_ptr, &match_len) == 0)
{
xp_printf (XP_T("match = %s, match length = %u\n"), match_ptr, match_len);
}