| /* |
| * rename.c - aeb 2000-01-01 |
| * |
| -------------------------------------------------------------- |
| #!/bin/sh |
| if [ $# -le 2 ]; then echo call: rename from to files; exit; fi |
| FROM="$1" |
| TO="$2" |
| shift |
| shift |
| for i in $@; do N=`echo "$i" | sed "s/$FROM/$TO/g"`; mv "$i" "$N"; done |
| -------------------------------------------------------------- |
| * This shell script will do renames of files, but may fail |
| * in cases involving special characters. Here a C version. |
| */ |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <getopt.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| |
| #include "nls.h" |
| #include "xalloc.h" |
| #include "c.h" |
| #include "closestream.h" |
| |
| #define RENAME_EXIT_SOMEOK 2 |
| #define RENAME_EXIT_NOTHING 4 |
| #define RENAME_EXIT_UNEXPLAINED 64 |
| |
| static int string_replace(char *from, char *to, char *s, char *orig, char **newname) |
| { |
| char *p, *q, *where; |
| |
| where = strstr(s, from); |
| if (where == NULL) |
| return 1; |
| p = orig; |
| *newname = xmalloc(strlen(orig) + strlen(to) + 1); |
| q = *newname; |
| while (p < where) |
| *q++ = *p++; |
| p = to; |
| while (*p) |
| *q++ = *p++; |
| p = where + strlen(from); |
| while (*p) |
| *q++ = *p++; |
| *q = 0; |
| return 0; |
| } |
| |
| static int do_symlink(char *from, char *to, char *s, int verbose) |
| { |
| char *newname = NULL, *target = NULL; |
| int ret = 1; |
| struct stat sb; |
| |
| if (lstat(s, &sb) == -1) { |
| warn(_("stat of %s failed"), s); |
| return 2; |
| } |
| if (!S_ISLNK(sb.st_mode)) { |
| warnx(_("%s: not a symbolic link"), s); |
| return 2; |
| } |
| target = xmalloc(sb.st_size + 1); |
| if (readlink(s, target, sb.st_size + 1) < 0) { |
| warn(_("%s: readlink failed"), s); |
| free(target); |
| return 2; |
| } |
| target[sb.st_size] = '\0'; |
| if (string_replace(from, to, target, target, &newname)) |
| ret = 0; |
| else if (0 > unlink(s)) { |
| warn(_("%s: unlink failed"), s); |
| ret = 2; |
| } else if (symlink(newname, s) != 0) { |
| warn(_("%s: symlinking to %s failed"), s, newname); |
| ret = 2; |
| } |
| if (verbose && ret == 1) |
| printf("%s: `%s' -> `%s'\n", s, target, newname); |
| free(newname); |
| free(target); |
| return ret; |
| } |
| |
| static int do_file(char *from, char *to, char *s, int verbose) |
| { |
| char *newname = NULL, *file=NULL; |
| int ret = 1; |
| |
| if (strchr(from, '/') == NULL && strchr(to, '/') == NULL) |
| file = strrchr(s, '/'); |
| if (file == NULL) |
| file = s; |
| if (string_replace(from, to, file, s, &newname)) |
| return 0; |
| else if (rename(s, newname) != 0) { |
| warn(_("%s: rename to %s failed"), s, newname); |
| ret = 2; |
| } |
| if (verbose && ret == 1) |
| printf("`%s' -> `%s'\n", s, newname); |
| free(newname); |
| return ret; |
| } |
| |
| static void __attribute__ ((__noreturn__)) usage(FILE * out) |
| { |
| fputs(USAGE_HEADER, out); |
| fprintf(out, |
| _(" %s [options] <expression> <replacement> <file>...\n"), |
| program_invocation_short_name); |
| |
| fputs(USAGE_SEPARATOR, out); |
| fputs(_("Rename files.\n"), out); |
| |
| fputs(USAGE_OPTIONS, out); |
| fputs(_(" -v, --verbose explain what is being done\n"), out); |
| fputs(_(" -s, --symlink act on the target of symlinks\n"), out); |
| fputs(USAGE_SEPARATOR, out); |
| fputs(USAGE_HELP, out); |
| fputs(USAGE_VERSION, out); |
| fprintf(out, USAGE_MAN_TAIL("rename(1)")); |
| exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| char *from, *to; |
| int i, c, ret = 0, verbose = 0; |
| int (*do_rename)(char *from, char *to, char *s, int verbose) = do_file; |
| |
| static const struct option longopts[] = { |
| {"verbose", no_argument, NULL, 'v'}, |
| {"version", no_argument, NULL, 'V'}, |
| {"help", no_argument, NULL, 'h'}, |
| {"symlink", no_argument, NULL, 's'}, |
| {NULL, 0, NULL, 0} |
| }; |
| |
| setlocale(LC_ALL, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| atexit(close_stdout); |
| |
| while ((c = getopt_long(argc, argv, "vsVh", longopts, NULL)) != -1) |
| switch (c) { |
| case 'v': |
| verbose = 1; |
| break; |
| case 's': |
| do_rename = do_symlink; |
| break; |
| case 'V': |
| printf(UTIL_LINUX_VERSION); |
| return EXIT_SUCCESS; |
| case 'h': |
| usage(stdout); |
| default: |
| usage(stderr); |
| } |
| |
| argc -= optind; |
| argv += optind; |
| |
| if (argc < 3) { |
| warnx(_("not enough arguments")); |
| usage(stderr); |
| } |
| |
| from = argv[0]; |
| to = argv[1]; |
| |
| for (i = 2; i < argc; i++) |
| ret |= do_rename(from, to, argv[i], verbose); |
| |
| switch (ret) { |
| case 0: |
| return RENAME_EXIT_NOTHING; |
| case 1: |
| return EXIT_SUCCESS; |
| case 2: |
| return EXIT_FAILURE; |
| case 3: |
| return RENAME_EXIT_SOMEOK; |
| default: |
| return RENAME_EXIT_UNEXPLAINED; |
| } |
| } |