eddy/eddys_snippets
1
0
Fork 0
mirror of https://github.com/eddyem/eddys_snippets.git synced 2025-12-06 02:35:12 +03:00
Code Issues Packages Projects Releases Wiki Activity

add mydiff

Browse Source
This commit is contained in:
eddyem 2016-12-29 12:11:46 +03:00
parent e8a0b47452
commit 70bbe7ddf2
1 changed files with 52 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
mydiff.c Normal file
View File

@ -0,0 +1,52 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <err.h>
void help(char* name){
printf("\nUsage:\n\t%s <file1> <file2>\n\t\tprint lines of <file1>, that not present in <file2>\n", name);
printf("\t%s -v <file1> < file2>\n\t\tshows lines of <file1>, that present in <file2>\n", name);
exit(0);
}
int main(int argc, char** argv){
char *buf, *F1, *F2, *ptr, *ptr1;
int file1, file2, n = 0, Vflag = 0;
long size1, size2;
struct stat St;
if(argc < 3 || strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0) help(argv[0]);
if(strcmp(argv[1], "-v") == 0){ Vflag = 1; n = 1;}
if( stat(argv[n+1], &St) < 0) err(1, "\n\tCan't stat %s", argv[n+1]);
size1 = St.st_size;
if( stat(argv[n+2], &St) < 0) err(2, "\n\tCan't stat %s", argv[n+2]);
size2 = St.st_size;
file1 = open(argv[n+1], O_RDONLY);
if(file1 < 0) err(3, "\n\tCan't open %s", argv[n+1]);
file2 = open(argv[n+2], O_RDONLY);
if(file2 < 0) err(4, "\n\tCan't open %s", argv[n+2]);
buf = malloc(16385); // ÂÕÆÅÒ ÄÌÑ ÓÔÒÏËÉ
F1 = malloc(size1 + 1); // ÓÏÄÅÒÖÉÍÏÅ ÆÁÊÌÁ 1
ptr1 = F1;
F2 = malloc(size2 + 1); // ÓÏÄÅÒÖÉÍÏÅ ÆÁÊÌÁ 2
if(read(file1, F1, size1) != size1) err(5, "\n\tCan't read %s", argv[n+1]);
F1[size1] = 0;
close(file1);
if(read(file2, F2, size2) != size2) err(6, "\n\tCan't read %s", argv[n+2]);
F2[size2] = 0;
close(file2);
while(ptr1){
ptr = strchr(ptr1, '\n');
if(ptr) *ptr = 0;
strncpy(buf, ptr1, 16384);
if(strstr(F2, buf) == NULL){ if (Vflag == 0) printf("%s\n", buf);}
else if(Vflag == 1) printf("%s\n", buf);
if(ptr) ptr1 = ptr + 1;
else ptr1 = NULL; // ËÏÎÅÃ ÓÔÒÏËÉ
}
free(buf); free(F1); free(F2);
exit(0);
}