diff options
| -rw-r--r-- | editors/sed.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/editors/sed.c b/editors/sed.c index 3ee8edc..a2df931 100644 --- a/editors/sed.c +++ b/editors/sed.c @@ -62,7 +62,8 @@ //usage:#define sed_full_usage "\n\n" //usage: " -e CMD Add CMD to sed commands to be executed" //usage: "\n -f FILE Add FILE contents to sed commands to be executed" -//usage: "\n -i Edit files in-place (else sends result to stdout)" +//usage: "\n -i[SFX] Edit files in-place (otherwise sends to stdout)" +//usage: "\n Optionally backs files up, appending SFX" //usage: "\n -n Suppress automatic printing of pattern space" //usage: "\n -r Use extended regex syntax" //usage: "\n" @@ -1374,6 +1375,19 @@ int sed_main(int argc UNUSED_PARAM, char **argv) { unsigned opt; llist_t *opt_e, *opt_f; + char *opt_i; + +#if ENABLE_LONG_OPTS + static const char sed_longopts[] ALIGN1 = + /* name has_arg short */ + "in-place\0" Optional_argument "i" + "regexp-extended\0" No_argument "r" + "quiet\0" No_argument "n" + "silent\0" No_argument "n" + "expression\0" Required_argument "e" + "file\0" Required_argument "f"; +#endif + int status = EXIT_SUCCESS; INIT_G(); @@ -1382,17 +1396,21 @@ int sed_main(int argc UNUSED_PARAM, char **argv) if (ENABLE_FEATURE_CLEAN_UP) atexit(sed_free_and_close_stuff); /* Lie to autoconf when it starts asking stupid questions. */ - if (argv[1] && !strcmp(argv[1], "--version")) { + if (argv[1] && strcmp(argv[1], "--version") == 0) { puts("This is not GNU sed version 4.0"); return 0; } /* do normal option parsing */ opt_e = opt_f = NULL; + opt_i = NULL; opt_complementary = "e::f::" /* can occur multiple times */ "nn"; /* count -n */ + + IF_LONG_OPTS(applet_long_options = sed_longopts); + /* -i must be first, to match OPT_in_place definition */ - opt = getopt32(argv, "irne:f:", &opt_e, &opt_f, + opt = getopt32(argv, "i::rne:f:", &opt_i, &opt_e, &opt_f, &G.be_quiet); /* counter for -n */ //argc -= optind; argv += optind; @@ -1474,8 +1492,13 @@ int sed_main(int argc UNUSED_PARAM, char **argv) fclose(G.nonstdout); G.nonstdout = stdout; - /* unlink(argv[i]); */ - xrename(G.outname, argv[i]); + if (opt_i) { + char *backupname = xasprintf("%s%s", argv[i], opt_i); + xrename(argv[i], backupname); + free(backupname); + } + /* else unlink(argv[i]); - rename below does this */ + xrename(G.outname, argv[i]); //TODO: rollback backup on error? free(G.outname); G.outname = NULL; |