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yREGEX_comp.c
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yREGEX_comp.c
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/*===============================[[ beg code ]]===============================*/
#include "yREGEX.h"
#include "yREGEX_priv.h"
/* NEXT STEPS
*
* add formal errors (yregex_err_add)
*
*
*
*
*
*/
/*
* CHAR comp indx mods jump
* n n -
*
* SET comp indx mods jump
* [...] [ . -
*
* ANCHORS comp indx mods jump
* ^ ^ ^ BOL
* $ $ $ EOL
* < < 6 < BOW
* > > 6 > EOW
*
* GROUPS comp indx mods jump
* ( ( . .
* | | . .
* ) ) . -
*
* QUAN comp indx mods jump
*
*
*
*
*/
/*---(group shared variables)---------*/
#define MAX_STACK 100
static int s_gstack [MAX_STACK];
static char s_glevel = 0;
static int s_ggroup = 0;
static int s_ghidden = 10;
static int s_gmulti = 100;
static char s_gfocus = '-'; /* focus group used (y/-) */
/*====================------------------------------------====================*/
/*===---- program level ----===*/
/*====================------------------------------------====================*/
static void o___PROGRAM_________________o (void) {;}
char /*-> tbd --------------------------------[ shoot [fe.C73.144.31]*/ /*-[01.0000.01#.Z]-*/ /*-[--.---.---.--]-*/
yregex_comp__prep (cchar *a_regex)
{
/*---(locals)-----------+-----+-----+-*/
char rce = -10;
char rc = 0;
int i = 0;
int j = 0;
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_point ("a_regex" , a_regex);
/*---(check regex)--------------------*/
--rce; if (a_regex == NULL) {
DEBUG_YREGEX yLOG_note ("can not be null");
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
/*---(check scorer)-------------------*/
if (strchr (G_PREFIX, a_regex [0]) != NULL) {
gre.scorer = a_regex [0];
rc = snprintf (gre.orig , LEN_REGEX, "(%s)", a_regex + 1);
} else {
gre.scorer = '?';
rc = snprintf (gre.orig , LEN_REGEX, "(%s)", a_regex);
}
/*---(copy regex)---------------------*/
DEBUG_YREGEX yLOG_value ("rc" , rc);
--rce; if (rc < 0 ) {
DEBUG_YREGEX yLOG_note ("truncated copy");
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
/*---(translate extended chars)-------*/
DEBUG_YREGEX yLOG_info ("before" , gre.orig);
gre.olen = strllen (gre.orig , LEN_REGEX);
DEBUG_YREGEX yLOG_value ("gre.olen" , gre.olen);
yregex_comp__extended ();
DEBUG_YREGEX yLOG_info ("gre.orig" , gre.orig);
gre.olen = strllen (gre.orig , LEN_REGEX);
DEBUG_YREGEX yLOG_value ("gre.olen" , gre.olen);
/*---(copy regex)---------------------*/
strlcpy (gre.regex, gre.orig , LEN_REGEX);
gre.rlen = gre.olen;
/*---(initialize compiled)------------*/
for (i = 0; i < LEN_REGEX; ++i) {
gre.comp [i] = 0;
gre.indx [i] = 0;
gre.mods [i] = 0;
gre.jump [i] = 0;
}
gre.clen = 0;
/*---(initialize grouping)------------*/
s_glevel = 0;
s_ggroup = 0;
s_ghidden = 10;
s_gfocus = '-';
strlcpy (gre.groups, " ", LEN_LABEL);
/*---(initialize sets)----------------*/
yregex_sets_prep ();
yregex_rule_init ();
gre.ready = '-';
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 0;
}
/*====================------------------------------------====================*/
/*===---- data structure ----===*/
/*====================------------------------------------====================*/
static void o___STRUCTURE_______________o (void) {;}
char /*-> tbd --------------------------------[ leaf [fz.632.201.00]*/ /*-[00.0000.06#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp_add (cchar a_comp, cint a_indx)
{
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_senter (__FUNCTION__);
DEBUG_YREGEX yLOG_schar (a_comp);
DEBUG_YREGEX yLOG_sint (a_indx);
DEBUG_YREGEX yLOG_sint (gre.clen);
gre.comp [gre.clen] = a_comp;
gre.indx [gre.clen] = a_indx;
gre.mods [gre.clen] = ' ';
gre.jump [gre.clen] = 0;
++gre.clen;
DEBUG_YREGEX yLOG_sint (gre.clen);
DEBUG_YREGEX yLOG_sexit (__FUNCTION__);
return 0;
}
char /*-> tbd --------------------------------[ leaf [fz.412.301.00]*/ /*-[00.0000.02#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp_mod (cchar a_mod)
{
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_senter (__FUNCTION__);
DEBUG_YREGEX yLOG_schar (a_mod);
gre.mods [gre.clen - 1] = a_mod;
DEBUG_YREGEX yLOG_sint (gre.clen - 1);
DEBUG_YREGEX yLOG_sexit (__FUNCTION__);
return 0;
}
char /*-> tbd --------------------------------[ leaf [fz.632.201.00]*/ /*-[00.0000.06#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp__dup_one (void)
{
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_senter (__FUNCTION__);
DEBUG_YREGEX yLOG_schar (gre.comp [gre.clen - 1]);
DEBUG_YREGEX yLOG_sint (gre.indx [gre.clen - 1]);
DEBUG_YREGEX yLOG_sint (gre.clen);
gre.comp [gre.clen] = gre.comp [gre.clen - 1];
gre.indx [gre.clen] = gre.indx [gre.clen - 1];
gre.mods [gre.clen] = gre.mods [gre.clen - 1];
gre.jump [gre.clen] = gre.jump [gre.clen - 1];
++gre.clen;
DEBUG_YREGEX yLOG_sint (gre.clen);
DEBUG_YREGEX yLOG_sexit (__FUNCTION__);
return 0;
}
char /*-> tbd --------------------------------[ leaf [fz.632.201.00]*/ /*-[00.0000.06#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp__dup_group (void)
{
int x_beg = 0;
int x_end = 0;
int i = 0;
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_value ("gre.clen" , gre.clen);
x_end = gre.clen - 1;
x_beg = yregex_comp__group_beg (x_end);
DEBUG_YREGEX yLOG_value ("x_beg" , x_beg);
DEBUG_YREGEX yLOG_value ("x_end" , x_end);
for (i = x_beg; i <= x_end; ++i) {
DEBUG_YREGEX yLOG_value ("pos" , i);
yregex_comp_add (gre.comp [i], gre.indx [i]);
if (strchr ("(|)", gre.comp [i]) != NULL) gre.indx [gre.clen - 1] = s_gmulti;
yregex_comp_mod (gre.mods [i]);
gre.jump [gre.clen - 1] = gre.jump [i];
}
++s_gmulti;
DEBUG_YREGEX yLOG_value ("s_gmulti" , s_gmulti);
DEBUG_YREGEX yLOG_value ("gre.clen" , gre.clen);
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 0;
}
/*====================------------------------------------====================*/
/*===---- literal handling ----===*/
/*====================------------------------------------====================*/
static void o___LITERAL_________________o (void) {;}
char /*-> tbd --------------------------------[ ------ [fe.833.134.31]*/ /*-[01.0000.01#.6]-*/ /*-[--.---.---.--]-*/
yregex_comp__literal (int *a_rpos)
{
/*---(locals)-----------+-----+-----+-*/
char rce = -10;
char rc = 0;
uchar x_ch = '-';
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_value ("*a_rpos" , *a_rpos);
/*---(check)--------------------------*/
x_ch = gre.regex [*a_rpos];
DEBUG_YREGEX yLOG_value ("x_ch" , x_ch);
rc = yregex_comp_add (x_ch, 0);
DEBUG_YREGEX yLOG_value ("rc" , rc);
--rce; if (rc < 0) {
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 1;
}
/*====================------------------------------------====================*/
/*===---- modifier handling ----===*/
/*====================------------------------------------====================*/
static void o___MODS____________________o (void) {;}
char /*-> tbd --------------------------------[ ------ [fe.732.151.11]*/ /*-[01.0000.01#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp__quan_simp (int *a_rpos)
{
/*---(locals)-----------+-----+-----+-*/
char rce = -10;
char rc = -1;
uchar x_set = 0;
char t [LEN_NAME] = "";
char x_mod = ' ';
char x_pch = ' ';
int x_beg = -1;
int x_end = -1;
int x_len = -1;
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_value ("*a_rpos" , *a_rpos);
x_mod = gre.regex [*a_rpos];
x_pch = gre.regex [*a_rpos - 1];
DEBUG_YREGEX yLOG_value ("x_mod" , x_mod);
DEBUG_YREGEX yLOG_value ("x_pch" , x_pch);
/*---(handle shared)------------------*/
switch (x_mod) {
case '*' : case '@' :
DEBUG_YREGEX yLOG_note ("any modifier * (greedy) and @ (lazy)");
yregex_comp_mod (x_mod);
break;
case '?' : case '!' :
DEBUG_YREGEX yLOG_note ("one modifier ? (greedy) and ! (lazy)");
yregex_comp_mod (x_mod);
break;
case '+' : case '~' :
DEBUG_YREGEX yLOG_note ("many modifier + (greedy) and ~ (lazy)");
if (x_pch == ')') yregex_comp__dup_group ();
else yregex_comp__dup_one ();
if (x_mod == '+') yregex_comp_mod ('*');
else yregex_comp_mod ('@');
break;
}
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 1;
}
char /*-> tbd --------------------------------[ ------ [fe.I86.1C3.D1]*/ /*-[03.0000.01#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp__quan_comp (int *a_rpos)
{
/*---(locals)-----------+-----+-----+-*/
char rce = -10;
char rc = -1;
uchar x_set = 0;
char t [LEN_NAME] = "";
uchar x_ch = ' ';
uchar x_mod = ' ';
uchar x_pch = ' ';
int i = 0;
char x_lazy = '-';
int x_min = -1;
int x_max = -1;
int x_len = 0;
char x_comma = '-';
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_value ("*a_rpos" , *a_rpos);
x_ch = gre.regex [*a_rpos];
DEBUG_YREGEX yLOG_char ("x_ch" , x_ch);
--rce; if (x_ch != '{') {
DEBUG_YREGEX yLOG_note ("does not start with a {");
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
x_pch = gre.regex [*a_rpos - 1];
/*---(check for lazy modifier)--------*/
x_mod = gre.regex [++(*a_rpos)];
DEBUG_YREGEX yLOG_value ("*a_rpos" , *a_rpos);
DEBUG_YREGEX yLOG_char ("x_mod" , x_mod);
if (x_mod == '-') {
DEBUG_YREGEX yLOG_note ("found lazy modifer");
x_lazy = 'y';
x_mod = gre.regex [++(*a_rpos)];
DEBUG_YREGEX yLOG_value ("*a_rpos" , *a_rpos);
DEBUG_YREGEX yLOG_char ("x_mod" , x_mod);
}
/*---(walk modifier)------------------*/
while (1) {
DEBUG_YREGEX yLOG_value ("x_len" , x_len);
if (*a_rpos >= gre.rlen) {
DEBUG_YREGEX yLOG_note ("hit end of string");
break;
}
if (x_mod == '}') {
DEBUG_YREGEX yLOG_note ("found end of modifier");
if (x_len > 0) {
sprintf (t, "%*.*s", x_len, x_len, gre.regex + *a_rpos - x_len);
DEBUG_YREGEX yLOG_info ("t" , t);
x_max = atoi (t);
} else {
x_max = MAX_QUAN;
}
DEBUG_YREGEX yLOG_value ("x_max" , x_max);
break;
}
if (x_mod == ',') {
DEBUG_YREGEX yLOG_note ("found comma separator");
x_comma = 'y';
if (x_len == 0) {
DEBUG_YREGEX yLOG_note ("min specifier is empty, use zero");
x_min = 0;
} else {
DEBUG_YREGEX yLOG_note ("found real min specifier");
sprintf (t, "%*.*s", x_len, x_len, gre.regex + *a_rpos - x_len);
DEBUG_YREGEX yLOG_info ("t" , t);
x_min = atoi (t);
}
x_len = -1; /* don't count comma */
DEBUG_YREGEX yLOG_value ("x_min" , x_min);
}
x_mod = gre.regex [++(*a_rpos)];
++x_len;
DEBUG_YREGEX yLOG_value ("*a_rpos" , *a_rpos);
DEBUG_YREGEX yLOG_char ("x_mod" , x_mod);
}
/*---(check)--------------------------*/
--rce; if (x_max <= 0) {
DEBUG_YREGEX yLOG_note ("max can not be empty or zero");
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
if (x_comma == '-') x_min = x_max;
/*---(update)-------------------------*/
DEBUG_YREGEX yLOG_note ("update modifier");
/*---(zero or more)-------------------*/
if (x_min == 0) {
if (x_max >= MAX_QUAN) {
if (x_lazy == 'y') yregex_comp_mod ('@');
else yregex_comp_mod ('*');
return 1;
}
if (x_lazy == 'y') yregex_comp_mod ('!');
else yregex_comp_mod ('?');
for (i = 1; i < x_max; ++i) {
if (x_pch == ')') yregex_comp__dup_group ();
else yregex_comp__dup_one ();
}
return 1;
}
/*---(one or more)--------------------*/
for (i = 1; i < x_min; ++i) {
if (x_pch == ')') yregex_comp__dup_group ();
else yregex_comp__dup_one ();
}
if (x_max > x_min) {
if (x_max >= MAX_QUAN) {
if (x_pch == ')') yregex_comp__dup_group ();
else yregex_comp__dup_one ();
if (x_lazy == 'y') yregex_comp_mod ('@');
else yregex_comp_mod ('*');
} else {
for (i = x_min; i < x_max; ++i) {
if (x_pch == ')') yregex_comp__dup_group ();
else yregex_comp__dup_one ();
if (x_lazy == 'y') yregex_comp_mod ('!');
else yregex_comp_mod ('?');
}
}
}
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 1;
}
/*====================------------------------------------====================*/
/*===---- group handling ----===*/
/*====================------------------------------------====================*/
static void o___GROUPS__________________o (void) {;}
int
yregex_comp__group_beg (int a_rpos)
{
/*---(locals)-----------+-----+-----+-*/
int x_lvl = 0;
int i = 0;
/*---(prepare)------------------------*/
x_lvl = gre.indx [a_rpos];
for (i = a_rpos - 1; i >= 0; --i) {
if (gre.indx [i] != x_lvl) continue;
if (gre.comp [i] != '(' ) continue;
return i;
}
return -1;
}
int
yregex_comp__group_end (int a_rpos)
{
/*---(locals)-----------+-----+-----+-*/
int x_lvl = 0;
int i = 0;
/*---(prepare)------------------------*/
if (gre.comp [a_rpos] == ')') return a_rpos;
/*---(prepare)------------------------*/
x_lvl = gre.indx [a_rpos];
for (i = a_rpos + 1; i < gre.clen; ++i) {
if (gre.indx [i] != x_lvl) continue;
if (gre.comp [i] != ')' ) continue;
return i;
}
return -1;
}
char /*-> tbd --------------------------------[ leaf [fc.741.141.50]*/ /*-[03.0000.01#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp__group_fix (cint a_grp)
{
/*---(locals)-----------+-----+-----+-*/
int i = 0;
int x_ch = ' ';
int x_indx = 0;
int x_jump = 0;
int x_or = 0;
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_value ("a_grp" , a_grp);
DEBUG_YREGEX yLOG_value ("gre.clen" , gre.clen);
/*---(track backwards)----------------*/
for (i = gre.clen - 1; i >= 0; --i) {
/*---(prepare)---------------------*/
x_ch = gre.comp [i];
x_indx = gre.indx [i];
/*> DEBUG_YREGEX yLOG_char ("x_ch" , x_ch); <*/
/*> DEBUG_YREGEX yLOG_value ("x_indx" , x_indx); <*/
/*> DEBUG_YREGEX yLOG_value ("x_jump" , x_jump); <*/
/*---(branch)----------------------*/
if (x_indx == a_grp && x_ch == '|') {
gre.jump [i] = x_jump;
x_jump = 0;
++x_or;
}
/*---(start)--------------------*/
else if (x_indx == a_grp && x_ch == '(') {
gre.jump [i] = x_jump;
gre.mods [i] = '0' + x_or;
break;
}
/*---(otherwise)----------------*/
++x_jump;
/*---(done)---------------------*/
}
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 1;
}
char /*-> tbd --------------------------------[ ------ [fe.B53.141.32]*/ /*-[02.0000.01#.!]-*/ /*-[--.---.---.--]-*/
yregex_comp__group (int *a_rpos)
{
/*---(locals)-----------+-----+-----+-*/
char rce = -10;
char rc = -1;
uchar x_ch = ' ';
uchar x_nch = ' ';
int x_grp = 0;
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
x_ch = gre.regex [*a_rpos];
x_nch = gre.regex [*a_rpos + 1];
DEBUG_YREGEX yLOG_complex ("position" , "pos %2d, ch %c, nch %c", *a_rpos, x_ch, x_nch);
/*---(defense)------------------------*/
--rce; if (*a_rpos == 0 && strchr ("#;", x_nch) != NULL){
DEBUG_YREGEX yLOG_note ("prefix hash (#) or semi (;), not really group");
x_nch = '?';
}
/*---(check)--------------------------*/
switch (x_ch) {
case '(' :
++s_glevel;
switch (x_nch) {
case '#' :
x_grp = ++s_ggroup;
if (s_ggroup > 10) {
DEBUG_YREGEX yLOG_note ("group number too high, had to hide");
x_grp = ++s_ghidden;
} else {
DEBUG_YREGEX yLOG_note ("open normal group");
gre.groups [x_grp - 1] = 'y';
}
++*a_rpos;
break;
case '>' :
DEBUG_YREGEX yLOG_note ("open primary group");
s_gfocus = 'y';
x_grp = GROUP_FOCUS;
gre.groups [10] = 'F';
++*a_rpos;
break;
case ';' :
DEBUG_YREGEX yLOG_note ("open rule group");
x_grp = ++s_ghidden;
++*a_rpos;
break;
default :
if (*a_rpos == 0) {
DEBUG_YREGEX yLOG_note ("open full regex container");
x_grp = ++s_ggroup;
gre.groups [x_grp - 1] = '.';
} else {
DEBUG_YREGEX yLOG_note ("open hidden group");
x_grp = ++s_ghidden;
}
break;
}
rc = yregex_comp_add ('(', x_grp);
s_gstack [s_glevel] = x_grp;
break;
case '<' :
DEBUG_YREGEX yLOG_note ("close primary group");
x_grp = s_gstack [s_glevel];
if (x_grp != GROUP_FOCUS) {
DEBUG_YREGEX yLOG_note ("primary focus parens do not match");
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return -1;
}
rc = yregex_comp_add (')', x_grp);
rc = yregex_comp__group_fix (x_grp);
--s_glevel;
++*a_rpos;
break;
case ')' :
DEBUG_YREGEX yLOG_note ("close normal/hidden group");
x_grp = s_gstack [s_glevel];
rc = yregex_comp_add (x_ch, x_grp);
rc = yregex_comp__group_fix (x_grp);
--s_glevel;
break;
case '|' :
DEBUG_YREGEX yLOG_note ("divide branches/matches");
x_grp = s_gstack [s_glevel];
rc = yregex_comp_add (x_ch, x_grp);
break;
}
DEBUG_YREGEX yLOG_complex ("current" , "lvl %2d, nrm %2d, hid %2d, grp %2d", s_glevel, s_ggroup, s_ghidden, x_grp);
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 1;
}
/*====================------------------------------------====================*/
/*===---- extended characters ----===*/
/*====================------------------------------------====================*/
static void o___EXTENDED________________o (void) {;}
char /*-> tbd --------------------------------[ ------ [ge.E54.142.98]*/ /*-[02.0000.00#.#]-*/ /*-[--.---.---.--]-*/
yregex_comp__extended (void)
{
/*---(locals)-----------+-----+-----+-*/
int i = 0;
uchar x_ch = ' '; /* current character */
char t [LEN_REGEX] = "";
int x_len = 0;
/*---(translate)----------------------*/
for (i = 0; i <= gre.olen; ++i) {
x_ch = gre.orig [i];
switch (x_ch) {
case G_CHAR_STORAGE : case G_CHAR_BIGDOT :
case G_CHAR_HALT : case G_CHAR_MASK : /* just a spacer, not used */
break;
case G_CHAR_DBSLASH : /* delayed backslash */
t [x_len++] = '\\';
t [x_len ] = 0 ;
break;
case G_CHAR_DDQUOTE : /* delayed double quote */
t [x_len++] = '\"';
t [x_len ] = 0 ;
break;
case G_CHAR_EQUIV : /* equal */
t [x_len++] = '=';
t [x_len++] = '=';
t [x_len ] = 0 ;
break;
case G_CHAR_NE : /* not equal */
t [x_len++] = '!';
t [x_len++] = '=';
t [x_len ] = 0 ;
break;
case G_CHAR_LE : /* less than or equal */
t [x_len++] = '<';
t [x_len++] = '=';
t [x_len ] = 0 ;
break;
case G_CHAR_GE : /* greater than or equal */
t [x_len++] = '>';
t [x_len++] = '=';
t [x_len ] = 0 ;
break;
case G_CHAR_SPACE : /* space */
t [x_len++] = ' ';
t [x_len ] = 0 ;
break;
case G_CHAR_SLPAREN : /* begin capture group */
t [x_len++] = '(';
t [x_len++] = '#';
t [x_len ] = 0 ;
break;
case G_CHAR_SRPAREN : /* end capture group */
t [x_len++] = ')';
t [x_len ] = 0 ;
break;
case G_CHAR_SLCHEV : /* begin focus group */
t [x_len++] = '(';
t [x_len++] = '>';
t [x_len ] = 0 ;
break;
case G_CHAR_SRCHEV : /* end focus group */
t [x_len++] = '<';
t [x_len++] = ')';
t [x_len ] = 0 ;
break;
case G_CHAR_SLBRACK : /* begin rule group */
t [x_len++] = '(';
t [x_len++] = ';';
t [x_len ] = 0 ;
break;
case G_CHAR_SRBRACK : /* end rule group */
t [x_len++] = ')';
t [x_len ] = 0 ;
break;
default :
t [x_len++] = x_ch;
t [x_len ] = 0 ;
break;
}
}
/*---(copy over)----------------------*/
strlcpy (gre.orig, t, LEN_REGEX);
gre.olen = strllen (gre.orig, LEN_REGEX);
/*---(complete)-----------------------*/
return 0;
}
/*====================------------------------------------====================*/
/*===---- main driver ----===*/
/*====================------------------------------------====================*/
static void o___DRIVER__________________o (void) {;}
char /*-> tbd --------------------------------[ ------ [ge.E54.142.98]*/ /*-[02.0000.00#.#]-*/ /*-[--.---.---.--]-*/
yREGEX_comp (cchar *a_regex)
{
/*---(locals)-----------+-----+-----+-*/
char rce = -10;
char rc = 0;
int i = 0;
uchar x_ch = ' '; /* current character */
uchar x_nch = ' '; /* next character */
/*---(header)-------------------------*/
DEBUG_YREGEX yLOG_enter (__FUNCTION__);
DEBUG_YREGEX yLOG_point ("a_regex" , a_regex);
/*---(prepare)------------------------*/
rc = yregex_comp__prep (a_regex);
DEBUG_YREGEX yLOG_value ("rc" , rc);
if (rc < 0) {
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rc);
return rc;
}
/*---(translate)----------------------*/
DEBUG_YREGEX yLOG_info ("tranlated" , gre.orig);
DEBUG_YREGEX yLOG_value ("gre.olen" , gre.olen);
/*---(pattern run)--------------------*/
rc = yregex_pats_comp ();
DEBUG_YREGEX yLOG_value ("rc" , rc);
if (rc < 0) {
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rc);
return rc;
}
/*---(parse)--------------------------*/
DEBUG_YREGEX yLOG_info ("gre.regex" , gre.regex);
DEBUG_YREGEX yLOG_value ("gre.rlen" , gre.rlen);
for (i = 0; i < gre.rlen; ++i) {
/*---(check last run)--------------*/
if (rc < 0) break;
DEBUG_YREGEX yLOG_value ("LOOP" , i);
/*---(prepare)---------------------*/
x_ch = gre.regex [i];
x_nch = gre.regex [i + 1];
/*---(backslashed metas)-----------*/
if (x_ch == G_KEY_BSLASH) {
DEBUG_YREGEX yLOG_note ("handle escaped character");
rc = yregex_sets_backslash (&i);
continue;
}
/*---(dot)-------------------------*/
if (x_ch == '.') {
DEBUG_YREGEX yLOG_note ("handle dot character");
rc = yregex_sets_dot (&i);
continue;
}
/*---(rules handling)--------------*/
if (x_ch == '(' && x_nch == ';' && i > 0) {
DEBUG_YREGEX yLOG_note ("handle special rules");
rc = yregex_comp__group (&i);
rc = yregex_rule_comp (&i);
continue;
}
/*---(group handling)--------------*/
if (strchr (TYPE_GROUP, x_ch) != NULL || (x_ch == '<' && x_nch == ')')) {
DEBUG_YREGEX yLOG_note ("handle grouping");
rc = yregex_comp__group (&i);
if (rc >= 0) continue;
}
/*---(anchors)---------------------*/
if (strchr (G_ANCHOR, x_ch) != NULL) {
DEBUG_YREGEX yLOG_note ("handle anchors");
rc = yregex_comp_add (x_ch, yregex_sets__by_abbr ('w', NULL));
if (rc >= 0) continue;
}
/*---(set handling)----------------*/
if (x_ch == '[') {
DEBUG_YREGEX yLOG_note ("handle character set");
rc = yregex_sets_comp (&i);
if (rc >= 0) continue;
}
/*---(quick modifiers)-------------*/
if (strchr (TYPE_QUANS, x_ch) != NULL) {
DEBUG_YREGEX yLOG_note ("handle simple modifier");
rc = yregex_comp__quan_simp (&i);
continue;
}
/*---(specific modifiers)----------*/
if (x_ch == '{') {
DEBUG_YREGEX yLOG_note ("handle complex modifier");
rc = yregex_comp__quan_comp (&i);
continue;
}
/*---(literals)--------------------*/
DEBUG_YREGEX yLOG_note ("handle character literal");
rc = yregex_comp__literal (&i);
}
/*---(check for failure)--------------*/
gre.ready = 'n';
--rce; if (s_glevel != 0) {
DEBUG_YREGEX yLOG_note ("parenthesis do not balance");
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
--rce; if (rc < 0) {
DEBUG_YREGEX yLOG_note ("compilation failed");
DEBUG_YREGEX yLOG_exitr (__FUNCTION__, rce);
return rce;
}
gre.ready = 'y';
/*---(complete)-----------------------*/
DEBUG_YREGEX yLOG_exit (__FUNCTION__);
return 0;
}
/*====================------------------------------------====================*/
/*===---- unit testing accessor ----===*/
/*====================------------------------------------====================*/
static void o___UNITTEST________________o (void) {;}
char unit_answer [LEN_TEXT];
char /*-> unit test accessor -----------------[ light [us.D90.241.L0]*/ /*-[03.0000.00#.#]-*/ /*-[--.---.---.--]-*/
yregex_comp__unit_map (char a_type, int a_value)
{
char x_ch = ' ';
char *x_range = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ***********************************************************************";
char *x_range2 = " 123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ***********************************************************************";
char *x_range3 = " .123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ**********************************************************************";
switch (a_type) {
case '(' :
if (a_value == GROUP_FOCUS) x_ch = '<';
else if (a_value >= 65 ) x_ch = '*';
else x_ch = x_range3 [a_value];
break;
case 'i' :
if (a_value >= 65 ) x_ch = '*';
else x_ch = x_range2 [a_value];
break;
case 'm' : case 'x' : case 'j' :
if (a_value == 0) x_ch = ' ';
else if (a_value >= 62) x_ch = '*';
else x_ch = x_range [a_value];
break;
}
return x_ch;
}
char* /*-> unit test accessor -----------------[ light [us.D90.241.L0]*/ /*-[03.0000.00#.#]-*/ /*-[--.---.---.--]-*/
yregex_comp__unit (char *a_question, int a_num)
{
/*---(locals)-----------+-----+-----+-*/
int i = 0;
char t [100] = "";
char *x_range = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ***********************************************************************";
char *x_range2 = " 123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ***********************************************************************";
char *x_range3 = " .123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ**********************************************************************";
int c = 0;
/*---(initialize)---------------------*/
strlcpy (unit_answer, "COMP__unit, unknown request", 100);
/*---(core data)----------------------*/
if (strncmp (a_question, "regex" , 20) == 0) {
if (gre.rlen < 100) sprintf (t, "%2d", gre.rlen);
else sprintf (t, "%2s", "++");
snprintf (unit_answer, LEN_TEXT, "COMP regex : %2s [%-45.45s]", t, gre.regex);
}
/*---(mapping)------------------------*/
/*> else if (strncmp (a_question, "map" , 20) == 0) { <*
*> strlcpy (t, "0123456789abcdef0123456789abcdef", 100); <*
*> if (a_num < 0 || a_num > 15) <*
*> snprintf (unit_answer, LEN_TEXT, "yREGEX_comp map : %x %3d %2d [%-32.32s]", 0 , s_mapcount, 0, "unknown area"); <*
*> else <*
*> for (i = 0; i < 32; ++i) if (s_map [a_num * 32 + i] == '.') { <*
*> t [i] = '_'; <*
*> ++c; <*
*> } <*
*> snprintf (unit_answer, LEN_TEXT, "yREGEX_comp map : %x %3d %2d [%-32.32s]", a_num * 2, s_mapcount, c, t); <*
*> } <*/
/*---(compiled)-----------------------*/
else if (strncmp (a_question, "base" , 20) == 0) {
snprintf (unit_answer, LEN_TEXT, "COMP base : %2d [%-45.45s]", gre.clen, gre.comp);
} else if (strncmp (a_question, "indx" , 20) == 0) {
for (i = 0; i < 45; ++i) {
if (strchr ("(|&)", gre.comp [i]) != NULL) t [i] = yregex_comp__unit_map ('(', gre.indx [i]);
else t [i] = yregex_comp__unit_map ('i', gre.indx [i]);
}
t [45] = 0;
snprintf (unit_answer, LEN_TEXT, "COMP indx : %2d [%-45.45s]", gre.clen, t);
} else if (strncmp (a_question, "mods" , 20) == 0) {
snprintf (unit_answer, LEN_TEXT, "COMP mods : %2d [%-45.45s]", gre.clen, gre.mods);
} else if (strncmp (a_question, "jump" , 20) == 0) {
for (i = 0; i < 45; ++i) t [i] = yregex_comp__unit_map ('j', gre.jump [i]);
t [45] = 0;
snprintf (unit_answer, LEN_TEXT, "COMP jump : %2d [%-45.45s]", gre.clen, t);
} else if (strncmp (a_question, "groups" , 20) == 0) {
snprintf (unit_answer, LEN_TEXT, "COMP groups : [%-11.11s]", gre.groups);
}
/*---(complete)-----------------------*/
return unit_answer;
}
/*===============================[[ end code ]]===============================*/