libisoburn-0.4.8.pl00/test/compare_file.c File Reference

#include <ctype.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <time.h>
Include dependency graph for compare_file.c:

Go to the source code of this file.

Functions

char * Ftypetxt (mode_t st_mode, int flag)
char * Ftimetxt (time_t t, char timetext[40], int flag)
int Compare_2_files (char *adr1, char *adr2, char *adrc, int flag)
int main (int argc, char **argv)

Function Documentation

int Compare_2_files ( char *  adr1,
char *  adr2,
char *  adrc,
int  flag 
)

Definition at line 92 of file compare_file.c.

References Ftimetxt(), and Ftypetxt().

Referenced by main().

00093 {
00094  struct stat s1, s2;
00095  int ret, differs= 0, r1, r2, fd1= -1, fd2= -1, i, done;
00096  char buf1[4096], buf2[4096], a[4096], ttx1[40], ttx2[40];
00097  off_t r1count= 0, r2count= 0, diffcount= 0, first_diff= -1;
00098 
00099  ret= lstat(adr1, &s1);
00100  if(ret==-1) {
00101    printf("? %s : cannot lstat() : %s\n", adr1, strerror(errno));
00102    return(0);
00103  }
00104  strcpy(a, Ftypetxt(s1.st_mode, 1));
00105  strcat(a, " ");
00106  if(adrc[0])
00107    strcat(a, adrc);
00108  else
00109    strcat(a, ".");
00110 
00111  ret= lstat(adr2, &s2);
00112  if(ret==-1) {
00113    printf("? %s : cannot lstat() : %s\n", adr2, strerror(errno));
00114    return(0);
00115  }
00116 
00117  /* Attributes */
00118  if(s1.st_mode != s2.st_mode) {
00119    if((s1.st_mode&~S_IFMT)!=(s2.st_mode&~S_IFMT))
00120      printf("%s : st_mode  :  %7.7o  <>  %7.7o\n", a,
00121              (unsigned int) (s1.st_mode & ~S_IFMT),
00122              (unsigned int) (s2.st_mode & ~S_IFMT));
00123    if((s1.st_mode&S_IFMT)!=(s2.st_mode&S_IFMT))
00124      printf("%s : type     :  %s  <>  %s\n",
00125             a, Ftypetxt(s1.st_mode, 0), Ftypetxt(s2.st_mode, 0));
00126    differs= 1;
00127  }
00128  if(s1.st_uid != s2.st_uid) {
00129    printf("%s : st_uid   :  %d  <>  %d\n", a, s1.st_uid, s2.st_uid);
00130    differs= 1;
00131  }
00132  if(s1.st_gid != s2.st_gid) {
00133    printf("%s : st_gid   :  %d  <>  %d\n", a, s1.st_gid, s2.st_gid);
00134    differs= 1;
00135  }
00136  if((S_ISCHR(s1.st_mode) && S_ISCHR(s2.st_mode)) ||
00137     (S_ISBLK(s1.st_mode) && S_ISBLK(s2.st_mode))) {
00138    if(s1.st_rdev != s2.st_rdev) {
00139      printf("%s : %s st_rdev  :  %lu  <>  %lu\n", a,
00140             (S_ISCHR(s1.st_mode) ? "S_IFCHR" : "S_IFBLK"),
00141             (unsigned long) s1.st_rdev, (unsigned long) s1.st_rdev);
00142      differs= 1;
00143    }
00144  }
00145  if(S_ISREG(s2.st_mode) && s1.st_size != s2.st_size) {
00146    printf("%s : st_size  :  %.f  <>  %.f      diff= %.f\n",
00147           a, (double) s1.st_size, (double) s2.st_size,
00148              ((double) s1.st_size) - (double) s2.st_size);
00149    differs= 1;
00150  }
00151  if(s1.st_mtime != s2.st_mtime) {
00152    printf("%s : st_mtime :  %s  <>  %s      diff= %.f s\n",
00153           a, Ftimetxt(s1.st_mtime, ttx1, 0),
00154              Ftimetxt(s2.st_mtime, ttx2, 0),
00155              ((double) s1.st_mtime) - (double) s2.st_mtime);
00156    differs= 1;
00157  }
00158  if(flag&1) {
00159    if(s1.st_atime != s2.st_atime) {
00160      printf("%s : st_atime :  %s  <>  %s      diff= %.f s\n",
00161             a, Ftimetxt(s1.st_atime, ttx1, 0),
00162                Ftimetxt(s2.st_atime, ttx2, 0),
00163                ((double) s1.st_atime) - (double) s2.st_atime);
00164      differs= 1;
00165    }
00166  }
00167  if(flag&2) {
00168    if(s1.st_ctime != s2.st_ctime) {
00169      printf("%s : st_ctime :  %s  <>  %s      diff= %.f s\n",
00170             a, Ftimetxt(s1.st_ctime, ttx1, 0),
00171                Ftimetxt(s2.st_ctime, ttx2, 0),
00172                ((double) s1.st_ctime) - (double) s2.st_ctime);
00173      differs= 1;
00174    }
00175  }
00176  if(S_ISREG(s1.st_mode) && S_ISREG(s2.st_mode)) {
00177    fd1= open(adr1, O_RDONLY);
00178    if(fd1==-1) {
00179      printf("- %s : cannot open() : %s\n", adr1, strerror(errno));
00180      return(0);
00181    }
00182    fd2= open(adr2, O_RDONLY);
00183    if(fd2==-1) {
00184      printf("- %s : cannot open() : %s\n", adr2, strerror(errno));
00185      close(fd1);
00186      return(0);
00187    }
00188   
00189    /* Content */
00190    done= 0;
00191    while(!done) {
00192      r1= read(fd1, buf1, sizeof(buf1));
00193      r2= read(fd2, buf2, sizeof(buf2));
00194      if((r1==EOF && r2==EOF) || (r1==0 && r2==0))
00195    break;
00196      if(r1==EOF || r1==0) {
00197        if(r1==EOF)
00198          r1= 0;
00199        if(s1.st_size > r1count + r1)
00200          printf("- %s : early EOF after %.f bytes\n", adr1, (double) r1count);
00201        differs= 1;
00202      }
00203      r1count+= r1;
00204      if(r2==EOF || r2<r1) {
00205        if(r2==EOF)
00206          r2= 0;
00207        if(s2.st_size > r2count + r2)
00208          printf("- %s : early EOF after %.f bytes\n", adr2, (double) r2count);
00209        differs= 1;
00210        done= 1;
00211      }
00212      if(r2>r1) {
00213        if(s1.st_size > r1count + r1)
00214          printf("- %s : early EOF after %.f bytes\n", adr1, (double) r1count);
00215        differs= 1;
00216        done= 1;
00217      }
00218      r2count+= r2;
00219      if(r1>r2)
00220        r1= r2;
00221      for(i= 0; i<r1; i++) {
00222        if(buf1[i]!=buf2[i]) {
00223          if(first_diff<0)
00224            first_diff= i;
00225          diffcount++;
00226        }
00227      }
00228    }
00229    if(diffcount>0 || r1count!=r2count) {
00230      if(first_diff<0)
00231        first_diff= (r1count>r2count ? r2count : r1count);
00232      printf("%s : %s  :  differs by at least %.f bytes. First at %.f\n", a,
00233             (s1.st_mtime==s2.st_mtime ?  "CONTENT":"content"),
00234             (double) (diffcount + abs(r1count-r2count)), (double) first_diff);
00235      differs= 1;
00236    }
00237  }
00238  if(fd1!=-1)
00239    close(fd1);
00240  if(fd2!=-1)
00241    close(fd2);
00242  return(!differs);
00243 }

char* Ftimetxt ( time_t  t,
char  timetext[40],
int  flag 
)

Definition at line 67 of file compare_file.c.

Referenced by Compare_2_files().

00068 {
00069  char *rpt;
00070  struct tm tms, *tmpt;
00071  static char months[12][4]= { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
00072                               "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
00073 
00074  tmpt= localtime_r(&t, &tms);
00075  rpt= timetext;
00076  rpt[0]= 0;
00077  if(tmpt==0)
00078    sprintf(rpt+strlen(rpt), "%12.f", (double) t);
00079  else if(time(NULL)-t < 180*86400 && time(NULL)-t >= 0)
00080    sprintf(rpt+strlen(rpt), "%3s %2d %2.2d:%2.2d",
00081            months[tms.tm_mon], tms.tm_mday, tms.tm_hour, tms.tm_min);
00082  else
00083    sprintf(rpt+strlen(rpt), "%3s %2d  %4.4d",
00084            months[tms.tm_mon], tms.tm_mday, 1900+tms.tm_year);
00085  return(timetext);
00086 }

char* Ftypetxt ( mode_t  st_mode,
int  flag 
)

Definition at line 29 of file compare_file.c.

Referenced by Compare_2_files().

00030 {
00031  if(flag&1)
00032    goto single_letters;
00033  if(S_ISDIR(st_mode))
00034    return("directory");
00035  else if(S_ISREG(st_mode))
00036    return("regular_file");
00037  else if(S_ISLNK(st_mode))
00038    return("symbolic_link");
00039  else if(S_ISBLK(st_mode))
00040    return("block_device");
00041  else if(S_ISCHR(st_mode))
00042    return("char_device");
00043  else if(S_ISFIFO(st_mode))
00044    return("name_pipe");
00045  else if(S_ISSOCK(st_mode))
00046    return("unix_socket");
00047  return("unknown");
00048 single_letters:;
00049  if(S_ISDIR(st_mode))
00050    return("d");
00051  else if(S_ISREG(st_mode))
00052    return("-");
00053  else if(S_ISLNK(st_mode))
00054    return("l");
00055  else if(S_ISBLK(st_mode))
00056    return("b");
00057  else if(S_ISCHR(st_mode))
00058    return("c");
00059  else if(S_ISFIFO(st_mode))
00060    return("p");
00061  else if(S_ISSOCK(st_mode))
00062    return("s");
00063  return("?");
00064 }

int main ( int  argc,
char **  argv 
)

Definition at line 246 of file compare_file.c.

References Compare_2_files().

00247 {
00248  int ret, i, with_ctime= 1;
00249  char adr1[4096], adr2[4096], adrc[4096];
00250 
00251  if(argc<4) {
00252    fprintf(stderr, "usage: %s  path  prefix1  prefix2\n", argv[0]);
00253    exit(2);
00254  }
00255  for(i= 4; i<argc; i++) {
00256    if(strcmp(argv[i], "-no_ctime")==0)
00257      with_ctime= 0;
00258    else {
00259      fprintf(stderr, "%s : Option not recognized: '%s'\n", argv[0], argv[i]);
00260      exit(1);
00261    }
00262  }
00263 
00264  if(strncmp(argv[1], argv[2], strlen(argv[2]))!=0) {
00265    fprintf(stderr, "%s: path '%s' does not match prefix1 '%s'\n",
00266           argv[0], argv[1], argv[2]);
00267    exit(2);
00268  }
00269  strcpy(adr1, argv[1]);
00270  strcpy(adrc, argv[1]+strlen(argv[2]));
00271  sprintf(adr2, "%s%s%s",
00272          argv[3], (adrc[0]=='/' || adrc[0]==0 ? "" : "/"), adrc);
00273 
00274  ret=  Compare_2_files(adr1, adr2, adrc, (with_ctime<<1));
00275  exit(ret<=0);
00276 }


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