pike.git/ src/ builtin_functions.c

1999-05-25

1999-05-25 12:38:22 by Mirar (Pontus Hagland) <pike@sort.mirar.org>

• 2aec8788a65560cb0b9d4a7df104980cd8fa4d59 (38 lines) (+37/-1) ^{[ Show | Annotate ]}
  Branch: 7.9

added String.count

Rev: lib/modules/String.pmod:1.5
Rev: src/builtin_functions.c:1.172
Rev: tutorial/tutorial.wmml:1.108

5:   \*/   /**/   #include "global.h" - RCSID("$Id: builtin_functions.c,v 1.171 1999/05/13 07:25:38 hubbe Exp $"); + RCSID("$Id: builtin_functions.c,v 1.172 1999/05/25 12:32:51 mirar Exp $");   #include "interpret.h"   #include "svalue.h"   #include "pike_macros.h"
3965:    push_array(ret);   }    + void f_string_count(INT32 args) + { +  struct pike_string * haystack=NULL; +  struct pike_string * needle=NULL; +  int c=0; +  int i,j;    -  +  get_all_args("String.count",args,"%W%W",&haystack,&needle); +  +  switch (needle->len) +  { +  case 0: +  switch (haystack->len) +  { +  case 0: c=1; break; /* "" appears one time in "" */ +  case 1: c=0; break; /* "" doesn't appear in "x" */ +  default: c=haystack->len-1; /* one time between each character */ +  } +  break; +  case 1: +  /* maybe optimize? */ +  default: +  for (i=0; i<haystack->len; i++) +  { +  j=string_search(haystack,needle,i); +  if (j==-1) break; +  i=j+needle->len-1; +  c++; +  } +  break; +  } +  pop_n_elems(args); +  push_int(c); + } +    void init_builtin_efuns(void)   {    ADD_EFUN("gethrtime", f_gethrtime,tFunc(tOr(tInt,tVoid),tInt), OPT_EXTERNAL_DEPEND);
4247:    ADD_FUNCTION("longest_ordered_sequence",f_longest_ordered_sequence,tFunc(tArray,tArr(tInt)),0);    /* function(array(mixed),array(mixed)...:array(mixed)) */    ADD_FUNCTION("sort",f_sort,tFuncV(tArr(tMix),tArr(tMix),tArr(tMix)),OPT_SIDE_EFFECT); +  ADD_FUNCTION("string_count",f_string_count,tFunc(tString tString,tInt),OPT_TRY_OPTIMIZE);   #ifdef DEBUG_MALLOC      /* function(void:void) */