| 30,6 → 30,10 |
|---|
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <getopt.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include "config.h" |
| #include "util.h" |
| #include "errors.h" |
| 37,37 → 41,160 |
|---|
| #include "cp.h" |
| #include "cmds.h" |
| |
| static char *cmdname = "cp"; |
| #define CP_VERSION "0.0.1" |
| #define CP_DEFAULT_BUFLEN 1024 |
| |
| /* Dispays help for cp in various levels */ |
| static const char *cmdname = "cp"; |
| |
| static struct option const long_options[] = { |
| { "buffer", required_argument, 0, 'b' }, |
| { "force", no_argument, 0, 'f' }, |
| { "recursive", no_argument, 0, 'r' }, |
| { "help", no_argument, 0, 'h' }, |
| { "version", no_argument, 0, 'v' }, |
| { "verbose", no_argument, 0, 'V' }, |
| { 0, 0, 0, 0 } |
| }; |
| |
| static int strtoint(const char *s1) |
| { |
| long t1; |
| |
| if (-1 == (t1 = strtol(s1, (char **) NULL, 10))) |
| return -1; |
| |
| if (t1 <= 0) |
| return -1; |
| |
| return (int) t1; |
| } |
| |
| static size_t copy_file(const char *src, const char *dest, size_t blen, int vb) |
| { |
| int fd1, fd2, bytes = 0; |
| off_t total = 0; |
| size_t copied = 0; |
| char *buff = NULL; |
| |
| if (vb) |
| printf("Copying %s to %s\n", src, dest); |
| |
| if (-1 == (fd1 = open(src, O_RDONLY))) { |
| printf("Unable to open source file %s\n", src); |
| return 0; |
| } |
| |
| if (-1 == (fd2 = open(dest, O_CREAT))) { |
| printf("Unable to open destination file %s\n", dest); |
| return 0; |
| } |
| |
| total = lseek(fd1, 0, SEEK_END); |
| |
| if (vb) |
| printf("%d bytes to copy\n", total); |
| |
| lseek(fd1, 0, SEEK_SET); |
| |
| if (NULL == (buff = (char *) malloc(blen + 1))) { |
| printf("Unable to allocate enough memory to read %s\n", |
| src); |
| goto out; |
| } |
| |
| do { |
| if (-1 == (bytes = read(fd1, buff, blen))) |
| break; |
| copied += bytes; |
| write(fd2, buff, blen); |
| } while (bytes > 0); |
| |
| if (bytes == -1) { |
| printf("Error copying %s\n", src); |
| copied = 0; |
| goto out; |
| } |
| |
| out: |
| close(fd1); |
| close(fd2); |
| if (buff) |
| free(buff); |
| return copied; |
| } |
| |
| void help_cmd_cp(unsigned int level) |
| { |
| printf("This is the %s help for '%s'.\n", |
| level ? EXT_HELP : SHORT_HELP, cmdname); |
| if (level == HELP_SHORT) { |
| printf("`%s' copies files and directories\n", cmdname); |
| } else { |
| help_cmd_cp(HELP_SHORT); |
| printf( |
| "Usage: %s [options] <source> <dest>\n" |
| "Options: (* indicates not yet implemented)\n" |
| " -h, --help A short option summary\n" |
| " -v, --version Print version information and exit\n" |
| "* -V, --verbose Be annoyingly noisy about what's being done\n" |
| "* -f, --force Do not complain when <dest> exists\n" |
| "* -r, --recursive Copy entire directories\n" |
| " -b, --buffer ## Set the read buffer size to ##\n" |
| "Currently, %s is under development, some options might not work.\n", |
| cmdname, cmdname); |
| } |
| |
| return; |
| } |
| |
| /* Main entry point for cp, accepts an array of arguments */ |
| int cmd_cp(char **argv) |
| { |
| unsigned int argc; |
| unsigned int i; |
| unsigned int argc, buffer = CP_DEFAULT_BUFLEN, verbose = 0; |
| int c, opt_ind, ret = 0; |
| |
| /* Count the arguments */ |
| for (argc = 0; argv[argc] != NULL; argc ++); |
| argc = cli_count_args(argv); |
| |
| printf("%s %s\n", TEST_ANNOUNCE, cmdname); |
| printf("%d arguments passed to %s", argc - 1, cmdname); |
| for (c = 0, optind = 0, opt_ind = 0; c != -1;) { |
| c = getopt_long(argc, argv, "hvVfrb:", long_options, &opt_ind); |
| switch (c) { |
| case 'h': |
| help_cmd_cp(1); |
| return CMD_SUCCESS; |
| case 'v': |
| printf("%d\n", CP_VERSION); |
| return CMD_SUCCESS; |
| case 'V': |
| verbose = 1; |
| break; |
| case 'f': |
| break; |
| case 'r': |
| break; |
| case 'b': |
| if (-1 == (buffer = strtoint(optarg))) { |
| printf("%s: Invalid buffer specification, " |
| "(should be a number greater than zero)\n", |
| cmdname); |
| return CMD_FAILURE; |
| } |
| break; |
| } |
| } |
| |
| if (argc < 2) { |
| printf("\n"); |
| return CMD_SUCCESS; |
| argc -= optind; |
| |
| if (argc != 2) { |
| printf("%s: invalid number of arguments. Try %s --help\n", |
| cmdname, cmdname); |
| return CMD_FAILURE; |
| } |
| |
| printf(":\n"); |
| for (i = 1; i < argc; i++) |
| printf("[%d] -> %s\n", i, argv[i]); |
| ret = copy_file(argv[optind], argv[optind + 1], buffer, verbose); |
| |
| return CMD_SUCCESS; |
| if (verbose) |
| printf("%d bytes copied (buffer = %d)\n", ret, buffer); |
| |
| if (ret) |
| return CMD_SUCCESS; |
| else |
| return CMD_FAILURE; |
| } |
| |