diff options
Diffstat (limited to 'ar.c')
| -rw-r--r-- | ar.c | 228 |
1 files changed, 228 insertions, 0 deletions
@@ -0,0 +1,228 @@ +#define _XOPEN_SOURCE 700 +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> + +enum { + CLOBBER = 1<<0, + CREATE_SILENTLY = 1<<1, + SYMBOLS = 1<<2, + TRUNCATE = 1<<3, + UPDATE = 1<<4, + VERBOSE = 1<<5, + + POSBEFORE = 1<<6, + POSAFTER = 1<<7, +}; + +static int ar_delete(int archive, const char *file, const char *posname, int flags) +{ + (void)posname; + + if (flags & VERBOSE) { + printf("d - %s\n", file); + } + + return 0; +} + +static int ar_move(int archive, const char *file, const char *posname, int flags) +{ + if (flags & VERBOSE) { + printf("moving %s %s %s\n", file, flags & POSBEFORE ? "before" : "after", posname); + } + + return 0; +} + +static int ar_print(int archive, const char *file, const char *posname, int flags) +{ + (void)posname; + + if (flags & VERBOSE) { + printf("\n<%s>\n\n", file); + } + + return 0; +} + +static int ar_quick(int archive, const char *file, const char *posname, int flags) +{ + (void)posname; + + if (flags & VERBOSE) { + printf("quick adding %s\n", file); + } + + return 0; +} + +static int ar_replace(int archive, const char *file, const char *posname, int flags) +{ + if (flags & VERBOSE) { + printf("%c - %s\n", /* file exists ? 'r' : */ 'a', file); + } + + return 0; +} + +static int ar_toc(int archive, const char *file, const char *posname, int flags) +{ + (void)posname; + char *mode = "----------"; + unsigned int uid = 0; + unsigned int gid = 0; + unsigned int size = 0; + char *month = "Jan"; /* %b */ + int day = 0; /* %e */ + int hour = 0; /* %H */ + int minute = 0; /* %M */ + int year = 0; /* %Y */ + + if (flags & VERBOSE) { + printf("%s %u/%u %u %s %d %d:%d %d %s\n", mode, uid, gid, size, month, day, hour, minute, year, file); + } else { + printf("%s\n", file); + } + + return 0; +} + +static int ar_extract(int archive, const char *file, const char *posname, int flags) +{ + (void)posname; + + if (flags & VERBOSE) { + printf("x - %s\n", file); + } + + return 0; +} + +static int ar_usage(int archive, const char *file, const char *posname, int flags) +{ + (void)archive; (void)file; (void)posname; (void)flags; + printf("usage:\n"); + printf(" ar -d [-v] archive file...\n"); + printf(" ar -m [-v] archive file...\n"); + printf(" ar -m (-a|-b|-i) [-v] posname archive file...\n"); + printf(" ar -p [-vs] archive [file...]\n"); + printf(" ar -q [-cv] archive file...\n"); + printf(" ar -r [-cuv] archive file...\n"); + printf(" ar -r (-a|-b|-i) [-cuv] posname archive file...\n"); + printf(" ar -t [-vs] archive [file...]\n"); + printf(" ar -x [-vsCT] archive [file...]\n"); + return 1; +} + +int main(int argc, char *argv[]) +{ + int (*fn)(int, const char *, const char*, int); + char *posname = NULL; + char *archive = NULL; + int flags = CLOBBER; + int open_flags = 0; + int c; + + while ((c = getopt(argc, argv, "abcCdimpqrstTuvx")) != -1) { + switch (c) { + case 'a': + flags |= POSAFTER; + flags &= ~POSBEFORE; + break; + + case 'b': + case 'i': + flags |= POSBEFORE; + flags &= ~POSAFTER; + break; + + case 'c': + flags |= CREATE_SILENTLY; + break; + + case 'C': + flags &= ~CLOBBER; + break; + + case 'd': + fn = ar_delete; + open_flags = O_RDWR; + break; + + case 'm': + fn = ar_move; + open_flags = O_RDWR | O_CREAT; + break; + + case 'p': + fn = ar_print; + open_flags = O_RDONLY; + break; + + case 'q': + fn = ar_quick; + open_flags = O_RDWR | O_CREAT; + break; + + case 'r': + fn = ar_replace; + open_flags = O_RDWR | O_CREAT; + break; + + case 's': + flags |= SYMBOLS; + break; + + case 't': + fn = ar_toc; + open_flags = O_RDONLY; + break; + + case 'T': + flags |= TRUNCATE; + break; + + case 'u': + flags |= UPDATE; + break; + + case 'v': + flags |= VERBOSE; + break; + + case 'x': + fn = ar_extract; + open_flags = O_RDONLY; + break; + + default: + return 1; + } + } + + if (flags & (POSBEFORE | POSAFTER)) { + posname = argv[optind++]; + } + + archive = argv[optind++]; + + int fd = open(archive, open_flags, 0644); + if (fd == -1) { + perror("ar"); + return 1; + } + + if (open_flags & O_CREAT) { + if (! (flags & CREATE_SILENTLY)) { + fprintf(stderr, "ar: creating %s\n", archive); + } + } + + int ret = 0; + do { + ret |= fn(fd, argv[optind++], posname, flags); + } while (argv[optind]); + + return 0; +} |