diff/src/diff.c

1041   struct comparison cmp;
1042 #define DIR_P(f) (S_ISDIR (cmp.file[f].stat.st_mode) != 0)
1067   memset (cmp.file, 0, sizeof cmp.file);
1068   cmp.parent = parent;
1070   /* cmp.file[f].desc markers */
1077   cmp.file[0].desc = name0 == 0 ? NONEXISTENT : UNOPENED;
1078   cmp.file[1].desc = name1 == 0 ? NONEXISTENT : UNOPENED;
1091       cmp.file[0].name = name0;
1092       cmp.file[1].name = name1;
1096       cmp.file[0].name = free0
1098       cmp.file[1].name = free1
1106       if (cmp.file[f].desc != NONEXISTENT)
1108 	  if (f && file_name_cmp (cmp.file[f].name, cmp.file[0].name) == 0)
1110 	      cmp.file[f].desc = cmp.file[0].desc;
1111 	      cmp.file[f].stat = cmp.file[0].stat;
1113 	  else if (strcmp (cmp.file[f].name, "-") == 0)
1115 	      cmp.file[f].desc = STDIN_FILENO;
1116 	      if (fstat (STDIN_FILENO, &cmp.file[f].stat) != 0)
1117 		cmp.file[f].desc = ERRNO_ENCODE (errno);
1120 		  if (S_ISREG (cmp.file[f].stat.st_mode))
1124 			cmp.file[f].desc = ERRNO_ENCODE (errno);
1126 			cmp.file[f].stat.st_size =
1127 			  MAX (0, cmp.file[f].stat.st_size - pos);
1132 		  set_mtime_to_now (&cmp.file[f].stat);
1135 	  else if (stat (cmp.file[f].name, &cmp.file[f].stat) != 0)
1136 	    cmp.file[f].desc = ERRNO_ENCODE (errno);
1147 	&& (cmp.file[f].desc == UNOPENED
1148 	    ? (S_ISREG (cmp.file[f].stat.st_mode)
1149 	       && ! (cmp.file[f].stat.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO))
1150 	       && cmp.file[f].stat.st_size == 0)
1151 	    : (cmp.file[f].desc == ERRNO_ENCODE (ENOENT)
1153 	       && cmp.file[1 - f].desc == UNOPENED)))
1154       cmp.file[f].desc = NONEXISTENT;
1157     if (cmp.file[f].desc == NONEXISTENT)
1159 	memset (&cmp.file[f].stat, 0, sizeof cmp.file[f].stat);
1160 	cmp.file[f].stat.st_mode = cmp.file[1 - f].stat.st_mode;
1165       int e = ERRNO_DECODE (cmp.file[f].desc);
1169 	  perror_with_name (cmp.file[f].name);
1181       char const *fnm = cmp.file[fnm_arg].name;
1182       char const *dir = cmp.file[dir_arg].name;
1183       char const *filename = cmp.file[dir_arg].name = free0
1189       if (stat (filename, &cmp.file[dir_arg].stat) != 0)
1200   else if (cmp.file[0].desc == NONEXISTENT
1201 	   && cmp.file[1].desc == NONEXISTENT)
1206 	    = (cmp.file[0].desc != NONEXISTENT
1207 	       && cmp.file[1].desc != NONEXISTENT
1208 	       && 0 < same_file (&cmp.file[0].stat, &cmp.file[1].stat)
1209 	       && same_file_attributes (&cmp.file[0].stat,
1210 					&cmp.file[1].stat)))
1229 		   cmp.file[0].name, cmp.file[1].name);
1232 	status = diff_dirs (&cmp, compare_files);
1236 	       && (! S_ISREG (cmp.file[0].stat.st_mode)
1237 		   || ! S_ISREG (cmp.file[1].stat.st_mode))))
1239       if (cmp.file[0].desc == NONEXISTENT || cmp.file[1].desc == NONEXISTENT)
1247 		      && cmp.file[0].desc == NONEXISTENT)))
1248 	    status = diff_dirs (&cmp, compare_files);
1252 		= parent->file[cmp.file[0].desc == NONEXISTENT].name;
1266 		    file_label[0] ? file_label[0] : cmp.file[0].name,
1267 		    file_type (&cmp.file[0].stat),
1268 		    file_label[1] ? file_label[1] : cmp.file[1].name,
1269 		    file_type (&cmp.file[1].stat));
1276 	   && S_ISREG (cmp.file[0].stat.st_mode)
1277 	   && S_ISREG (cmp.file[1].stat.st_mode)
1278 	   && cmp.file[0].stat.st_size != cmp.file[1].stat.st_size)
1281 	       file_label[0] ? file_label[0] : cmp.file[0].name,
1282 	       file_label[1] ? file_label[1] : cmp.file[1].name);
1291       if (cmp.file[0].desc == UNOPENED)
1292 	if ((cmp.file[0].desc = open (cmp.file[0].name, O_RDONLY, 0)) < 0)
1294 	    perror_with_name (cmp.file[0].name);
1297       if (cmp.file[1].desc == UNOPENED)
1300 	    cmp.file[1].desc = cmp.file[0].desc;
1301 	  else if ((cmp.file[1].desc = open (cmp.file[1].name, O_RDONLY, 0))
1304 	      perror_with_name (cmp.file[1].name);
1312 	  if (0 <= cmp.file[f].desc)
1313 	    set_binary_mode (cmp.file[f].desc, true);
1319 	status = diff_2_files (&cmp);
1323       if (0 <= cmp.file[0].desc && close (cmp.file[0].desc) != 0)
1325 	  perror_with_name (cmp.file[0].name);
1328       if (0 <= cmp.file[1].desc && cmp.file[0].desc != cmp.file[1].desc
1329 	  && close (cmp.file[1].desc) != 0)
1331 	  perror_with_name (cmp.file[1].name);
1343 		 file_label[0] ? file_label[0] : cmp.file[0].name,
1344 		 file_label[1] ? file_label[1] : cmp.file[1].name);