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LCOV - code coverage report
Current view: top level - ext/ereg/regex - regexec.c (source / functions) Hit Total Coverage
Test: PHP Code Coverage Lines: 8 10 80.0 %
Date: 2014-07-23 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  * the outer shell of regexec()
       3             :  *
       4             :  * This file includes engine.c *twice*, after muchos fiddling with the
       5             :  * macros that code uses.  This lets the same code operate on two different
       6             :  * representations for state sets.
       7             :  */
       8             : #include <sys/types.h>
       9             : #include <stdio.h>
      10             : #include <stdlib.h>
      11             : #include <string.h>
      12             : #include <limits.h>
      13             : #include <ctype.h>
      14             : 
      15             : #include "regex.h"
      16             : #include "utils.h"
      17             : #include "regex2.h"
      18             : 
      19             : #define PHP_REGEX_NOPE 0;               /* for use in asserts; shuts lint up */
      20             : 
      21             : /* macros for manipulating states, small version */
      22             : #define states  unsigned
      23             : #define states1 unsigned        /* for later use in regexec() decision */
      24             : #define CLEAR(v)        ((v) = 0)
      25             : #define SET0(v, n)      ((v) &= ~((unsigned)1 << (n)))
      26             : #define SET1(v, n)      ((v) |= (unsigned)1 << (n))
      27             : #define ISSET(v, n)     ((v) & ((unsigned)1 << (n)))
      28             : #define ASSIGN(d, s)    ((d) = (s))
      29             : #define EQ(a, b)        ((a) == (b))
      30             : #define STATEVARS       int dummy       /* dummy version */
      31             : #define STATESETUP(m, n)        /* nothing */
      32             : #define STATETEARDOWN(m)        /* nothing */
      33             : #define SETUP(v)        ((v) = 0)
      34             : #define onestate        unsigned
      35             : #define INIT(o, n)      ((o) = (unsigned)1 << (n))
      36             : #define INC(o)  ((o) <<= 1)
      37             : #define ISSTATEIN(v, o) ((v) & (o))
      38             : /* some abbreviations; note that some of these know variable names! */
      39             : /* do "if I'm here, I can also be there" etc without branches */
      40             : #define FWD(dst, src, n)        ((dst) |= ((unsigned)(src)&(here)) << (n))
      41             : #define BACK(dst, src, n)       ((dst) |= ((unsigned)(src)&(here)) >> (n))
      42             : #define ISSETBACK(v, n) ((v) & ((unsigned)here >> (n)))
      43             : /* function names */
      44             : #define SNAMES                  /* engine.c looks after details */
      45             : 
      46             : #include "engine.c"
      47             : 
      48             : /* now undo things */
      49             : #undef  states
      50             : #undef  CLEAR
      51             : #undef  SET0
      52             : #undef  SET1
      53             : #undef  ISSET
      54             : #undef  ASSIGN
      55             : #undef  EQ
      56             : #undef  STATEVARS
      57             : #undef  STATESETUP
      58             : #undef  STATETEARDOWN
      59             : #undef  SETUP
      60             : #undef  onestate
      61             : #undef  INIT
      62             : #undef  INC
      63             : #undef  ISSTATEIN
      64             : #undef  FWD
      65             : #undef  BACK
      66             : #undef  ISSETBACK
      67             : #undef  SNAMES
      68             : 
      69             : /* macros for manipulating states, large version */
      70             : #define states  unsigned char *
      71             : #define CLEAR(v)        memset(v, 0, m->g->nstates)
      72             : #define SET0(v, n)      ((v)[n] = 0)
      73             : #define SET1(v, n)      ((v)[n] = 1)
      74             : #define ISSET(v, n)     ((v)[n])
      75             : #define ASSIGN(d, s)    memcpy(d, s, m->g->nstates)
      76             : #define EQ(a, b)        (memcmp(a, b, m->g->nstates) == 0)
      77             : #define STATEVARS       int vn; unsigned char *space
      78             : #define STATESETUP(m, nv)       { (m)->space = malloc((nv)*(m)->g->nstates); \
      79             :                                 if ((m)->space == NULL) return(REG_ESPACE); \
      80             :                                 (m)->vn = 0; }
      81             : #define STATETEARDOWN(m)        { free((m)->space); }
      82             : #define SETUP(v)        ((v) = &m->space[m->vn++ * m->g->nstates])
      83             : #define onestate        int
      84             : #define INIT(o, n)      ((o) = (n))
      85             : #define INC(o)  ((o)++)
      86             : #define ISSTATEIN(v, o) ((v)[o])
      87             : /* some abbreviations; note that some of these know variable names! */
      88             : /* do "if I'm here, I can also be there" etc without branches */
      89             : #define FWD(dst, src, n)        ((dst)[here+(n)] |= (src)[here])
      90             : #define BACK(dst, src, n)       ((dst)[here-(n)] |= (src)[here])
      91             : #define ISSETBACK(v, n) ((v)[here - (n)])
      92             : /* function names */
      93             : #define LNAMES                  /* flag */
      94             : 
      95             : #include "engine.c"
      96             : 
      97             : /*
      98             :  - regexec - interface for matching
      99             :  = API_EXPORT(int) regexec(const regex_t *, const char *, size_t, \
     100             :  =                                      regmatch_t [], int);
     101             :  = #define      REG_NOTBOL      00001
     102             :  = #define      REG_NOTEOL      00002
     103             :  = #define      REG_STARTEND    00004
     104             :  = #define      REG_TRACE       00400   // tracing of execution
     105             :  = #define      REG_LARGE       01000   // force large representation
     106             :  = #define      REG_BACKR       02000   // force use of backref code
     107             :  *
     108             :  * We put this here so we can exploit knowledge of the state representation
     109             :  * when choosing which matcher to call.  Also, by this point the matchers
     110             :  * have been prototyped.
     111             :  */
     112             : API_EXPORT(int)                         /* 0 success, REG_NOMATCH failure */
     113        1032 : regexec(preg, string, nmatch, pmatch, eflags)
     114             : const regex_t *preg;
     115             : const char *string;
     116             : size_t nmatch;
     117             : regmatch_t pmatch[];
     118             : int eflags;
     119             : {
     120        1032 :         register struct re_guts *g = preg->re_g;
     121             : #ifdef REDEBUG
     122             : #       define  GOODFLAGS(f)    (f)
     123             : #else
     124             : #       define  GOODFLAGS(f)    ((f)&(REG_NOTBOL|REG_NOTEOL|REG_STARTEND))
     125             : #endif
     126             : 
     127        1032 :         if (preg->re_magic != MAGIC1 || g->magic != MAGIC2)
     128           0 :                 return(REG_BADPAT);
     129             :         assert(!(g->iflags&BAD));
     130        1032 :         if (g->iflags&BAD)               /* backstop for no-debug case */
     131           0 :                 return(REG_BADPAT);
     132        1032 :         eflags = GOODFLAGS(eflags);
     133             : 
     134        1032 :         if (g->nstates <= CHAR_BIT*sizeof(states1) && !(eflags&REG_LARGE))
     135         966 :                 return(smatcher(g, (unsigned char *)string, nmatch, pmatch, eflags));
     136             :         else
     137          66 :                 return(lmatcher(g, (unsigned char *)string, nmatch, pmatch, eflags));
     138             : }

Generated by: LCOV version 1.10

Generated at Wed, 23 Jul 2014 19:58:31 +0000 (9 minutes ago)

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