diff options
author | Eric Andersen <andersen@codepoet.org> | 1999-11-12 04:30:18 +0300 |
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committer | Eric Andersen <andersen@codepoet.org> | 1999-11-12 04:30:18 +0300 |
commit | 96bcfd346b436aef16b29d9157b80fd4148b1421 (patch) | |
tree | 339ad54804ab9399bbdb8a87e7bbc76408a11019 /gzip.c | |
parent | 0dfac6b9cec891b8d523f85d7989d772a1447828 (diff) |
Latest and greatest
-Erik
Diffstat (limited to 'gzip.c')
-rw-r--r-- | gzip.c | 98 |
1 files changed, 64 insertions, 34 deletions
@@ -12,10 +12,11 @@ //#endif static const char gzip_usage[] = - "gzip [OPTION]... [FILE]...\n\n" - "Compress FILEs with maximum compression.\n\n" + "gzip [OPTION]... FILE\n\n" + "Compress FILE with maximum compression.\n" + "When FILE is -, reads standard input. Implies -c.\n\n" "Options:\n" - "\t-c\tWrite output on standard output\n"; + "\t-c\tWrite output to standard output instead of FILE.gz\n"; /* gzip.h -- common declarations for all gzip modules @@ -1731,7 +1732,6 @@ DECLARE(uch, window, 2L*WSIZE); int ascii = 0; /* convert end-of-lines to local OS conventions */ int decompress = 0; /* decompress (-d) */ -int tostdout = 0; /* uncompress to stdout (-c) */ int no_name = -1; /* don't save or restore the original file name */ int no_time = -1; /* don't save or restore the original file time */ int foreground; /* set if program run in foreground */ @@ -1770,13 +1770,25 @@ unsigned outcnt; /* bytes in output buffer */ // char **argv; int gzip_main(int argc, char ** argv) { - + int result; int inFileNum; int outFileNum; + struct stat statBuf; + char* delFileName; + int tostdout = 0; + int fromstdin = 0; + + if (argc==1) + usage(gzip_usage); /* Parse any options */ while (--argc > 0 && **(++argv) == '-') { + if (*((*argv)+1) == '\0') { + fromstdin = 1; + tostdout = 1; + } while (*(++(*argv))) { + fprintf(stderr, "**argv='%c'\n", **argv); switch (**argv) { case 'c': tostdout = 1; @@ -1817,64 +1829,81 @@ int gzip_main(int argc, char ** argv) ALLOC(ush, tab_prefix1, 1L<<(BITS-1)); #endif - if (tostdout==1) { - /* And get to work */ - SET_BINARY_MODE(fileno(stdout)); - strcpy(ifname, "stdin"); - strcpy(ofname, "stdout"); - inFileNum=fileno(stdin); - outFileNum=fileno(stdout); + if (fromstdin==1) { + strcpy(ofname, "stdin"); - /* Get the time stamp on the input file. */ + inFileNum=fileno(stdin); time_stamp = 0; /* time unknown by default */ - ifile_size = -1L; /* convention for unknown size */ - - clear_bufs(); /* clear input and output buffers */ - part_nb = 0; - - /* Actually do the compression/decompression. */ - zip(inFileNum, outFileNum); - } else { - int result; - struct stat statBuf; - - /* And get to work */ + /* Open up the input file */ if (*argv=='\0') usage(gzip_usage); strncpy(ifname, *argv, MAX_PATH_LEN); - strncpy(ofname, *argv, MAX_PATH_LEN-4); - strcat(ofname, ".gz"); + /* Open input fille */ inFileNum=open( ifname, O_RDONLY); if (inFileNum < 0) { perror(ifname); do_exit(WARNING); } + /* Get the time stamp on the input file. */ result = stat(ifname, &statBuf); if (result < 0) { perror(ifname); do_exit(WARNING); } + time_stamp = statBuf.st_ctime; + ifile_size = statBuf.st_size; + } + - outFileNum=open( ofname, O_RDONLY); + if (tostdout==1) { + /* And get to work */ + strcpy(ofname, "stdout"); + outFileNum=fileno(stdout); + SET_BINARY_MODE(fileno(stdout)); + + clear_bufs(); /* clear input and output buffers */ + part_nb = 0; + + /* Actually do the compression/decompression. */ + zip(inFileNum, outFileNum); + + } else { + + /* And get to work */ + strncpy(ofname, ifname, MAX_PATH_LEN-4); + strcat(ofname, ".gz"); + + + /* Open output fille */ + outFileNum=open( ofname, O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW); if (outFileNum < 0) { perror(ofname); do_exit(WARNING); } SET_BINARY_MODE(outFileNum); - - /* Get the time stamp on the input file. */ - time_stamp = statBuf.st_ctime; /* time unknown by default */ - - ifile_size = statBuf.st_size; /* convention for unknown size */ + /* Set permissions on the file */ + fchmod(outFileNum, statBuf.st_mode); clear_bufs(); /* clear input and output buffers */ part_nb = 0; /* Actually do the compression/decompression. */ - zip(inFileNum, outFileNum); + result=zip(inFileNum, outFileNum); + close( outFileNum); + close( inFileNum); + /* Delete the original file */ + if (result == OK) + delFileName=ifname; + else + delFileName=ofname; + + if (unlink (delFileName) < 0) { + perror (delFileName); + exit( FALSE); + } } do_exit(exit_code); @@ -3198,6 +3227,7 @@ int zip(in, out) /* Write the header to the gzip file. See algorithm.doc for the format */ + method = DEFLATED; put_byte(GZIP_MAGIC[0]); /* magic header */ put_byte(GZIP_MAGIC[1]); |