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mv: implement -n option
function old new delta mv_longopts 23 36 +13 mv_main 510 520 +10 packed_usage 27218 27225 +7 Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
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@ -16,15 +16,30 @@
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#include "libbb.h"
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#include "libcoreutils/coreutils.h"
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//usage:#define mv_trivial_usage
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//usage: "[-fin] SOURCE DEST\n"
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//usage: "or: mv [-fin] SOURCE... DIRECTORY"
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//usage:#define mv_full_usage "\n\n"
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//usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n"
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//usage: "\nOptions:"
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//usage: "\n -f Don't prompt before overwriting"
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//usage: "\n -i Interactive, prompt before overwrite"
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//usage: "\n -n Don't overwrite an existing file"
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//usage:
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//usage:#define mv_example_usage
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//usage: "$ mv /tmp/foo /bin/bar\n"
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#if ENABLE_FEATURE_MV_LONG_OPTIONS
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static const char mv_longopts[] ALIGN1 =
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"interactive\0" No_argument "i"
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"force\0" No_argument "f"
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"no-clobber\0" No_argument "n"
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;
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#endif
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#define OPT_FILEUTILS_FORCE 1
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#define OPT_FILEUTILS_INTERACTIVE 2
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#define OPT_FILEUTILS_NOCLOBBER 4
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int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int mv_main(int argc, char **argv)
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@ -40,10 +55,11 @@ int mv_main(int argc, char **argv)
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#if ENABLE_FEATURE_MV_LONG_OPTIONS
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applet_long_options = mv_longopts;
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#endif
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// Need at least two arguments
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// -f unsets -i, -i unsets -f
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opt_complementary = "-2:f-i:i-f";
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flags = getopt32(argv, "fi");
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/* Need at least two arguments.
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* If more than one of -f, -i, -n is specified , only the final one
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* takes effect (it unsets previous options). */
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opt_complementary = "-2:f-in:i-fn:n-fi";
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flags = getopt32(argv, "fin");
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argc -= optind;
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argv += optind;
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last = argv[argc - 1];
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@ -68,18 +84,22 @@ int mv_main(int argc, char **argv)
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}
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DO_MOVE:
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if (dest_exists
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&& !(flags & OPT_FILEUTILS_FORCE)
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&& ((access(dest, W_OK) < 0 && isatty(0))
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|| (flags & OPT_FILEUTILS_INTERACTIVE))
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) {
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if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
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goto RET_1; /* Ouch! fprintf failed! */
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}
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if (!bb_ask_confirmation()) {
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if (dest_exists) {
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if (flags & OPT_FILEUTILS_NOCLOBBER)
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goto RET_0;
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if (!(flags & OPT_FILEUTILS_FORCE)
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&& ((access(dest, W_OK) < 0 && isatty(0))
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|| (flags & OPT_FILEUTILS_INTERACTIVE))
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) {
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if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
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goto RET_1; /* Ouch! fprintf failed! */
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}
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if (!bb_ask_confirmation()) {
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goto RET_0;
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}
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}
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}
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if (rename(*argv, dest) < 0) {
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struct stat source_stat;
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int source_exists;
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@ -2695,18 +2695,6 @@ INSERT
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"ras3 reset retension rewind rewoffline seek setblk setdensity\n" \
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"setpart tell unload unlock weof wset" \
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#define mv_trivial_usage \
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"[-fi] SOURCE DEST\n" \
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"or: mv [-fi] SOURCE... DIRECTORY"
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#define mv_full_usage "\n\n" \
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"Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n" \
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"\nOptions:" \
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"\n -f Don't prompt before overwriting" \
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"\n -i Interactive, prompt before overwrite" \
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#define mv_example_usage \
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"$ mv /tmp/foo /bin/bar\n"
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#define nameif_trivial_usage \
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"[-s] [-c FILE] [{IFNAME MACADDR}]"
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#define nameif_full_usage "\n\n" \
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