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annotate regexParser/sequentialSearch.cc @ 226:b4022ba23de5

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add sequentialSearch
author Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
date Fri, 15 Jan 2016 17:53:11 +0900
parents
children 8be58af605da
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226
b4022ba23de5 add sequentialSearch
Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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1 #include <stdio.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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2 #include <string.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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3 #include <unistd.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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4 #include <fcntl.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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5 #include <sys/stat.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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6 #include <sys/mman.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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7 #include <sys/types.h>
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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8
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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9 typedef struct bufferList {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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10 unsigned char buff;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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11 unsigned char buffptr;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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12 unsigned char buffend;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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13 unsigned char matchBegin;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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14 } BufferList, *BufferListPtr;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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15
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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16 typedef struct {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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17 caddr_t file_mmap;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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18 off_t size;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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19 } st_mmap_t;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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20
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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21 #include "state.cc"
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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22 int main(int argc, char **argv) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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23 char *filename;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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24 for (int i = 1; i < argc; i++) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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25 if (strcmp(argv[i],"-file") == 0) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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26 filename = argv[i+1]; i++;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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27 }
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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28 }
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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29
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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30 int map = MAP_PRIVATE;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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31 st_mmap_t st_mmap;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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32 struct stat sb;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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33 int fd;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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34 if ((fd=open(filename,O_RDONLY,0666))==0) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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35 fprintf(stderr,"can't open %s\n",filename);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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36 }
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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37
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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38 if (fstat(fd,&sb)) {
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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39 fprintf(stderr,"can't fstat %s\n",filename);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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40 }
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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41 st_mmap.size = sb.st_size;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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42 unsigned char *file_mmap = mmap(NULL,st_mmap.size,PROT_WRITE|PROT_READ,map,fd,(off_t)0);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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43
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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44 BufferList buff;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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45 buff.buff = buff.buffptr = buff.matchBegin = file_mmap;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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46 buff.buffend = buff.buff + st_mmap.size;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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47 stateSkip(buff);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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48 close(fd);
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
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49 return 0;
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Masataka Kohagura <kohagura@cr.ie.u-ryukyu.ac.jp>
parents:
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50 }