silentbob/silentbob-1.1/src/sblib/ww_begin_line.cpp

   1 /*
   2  * (c) Oleg Puchinin 2006.
   3  * graycardinalster@gmail.com
   4  *
   5  */
   6
   7 #include "../head.h"
   8 #include "../the_tt.h"
   9 #include "../dbg.h"
  10
  11 int ww_begin_line (struct tt_state_t * d_tt_state, char *d_out, int d_offset)
  12 {
  13         char *S = &d_tt_state->d_file_in [d_offset] - 1;
  14         char * d_end = &d_out[strlen (d_out)] - 1;
  15         int Ret = 0;
  16
  17         while (d_end != d_out) {
  18                 if (*d_end == ' ' || *d_end == '\t') {
  19                         while (*S == ' ' || *S == '\t')
  20                                 S--;
  21
  22                         while ((*d_end == ' ' || *d_end == '\t')
  23                                         && (d_end != d_out))
  24                                 d_end--;
  25
  26                         continue;
  27                 }
  28
  29                 if (*S == '\n')
  30                         Ret--;
  31
  32                 if (*S == *d_end)
  33                         d_end--;
  34
  35                 S--;
  36                 d_offset--;
  37                 assert (d_offset < 0, "Lena 3");
  38         }
  39
  40         return Ret;
  41 }
  42
  43