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authorRob Landley <rob@landley.net>2013-06-02 00:24:24 -0500
committerRob Landley <rob@landley.net>2013-06-02 00:24:24 -0500
commit5a26a86cec424d728d43523988ca70aa56ee76c9 (patch)
tree1fe0b2b665800d0cb25d3ab0a78f31cbe85e2acd /toys/pending
parent085f23692575e93142df2347cfe76dd173f23e16 (diff)
downloadtoybox-5a26a86cec424d728d43523988ca70aa56ee76c9.tar.gz
Stat cleanup.
lib: rename format_mode() to mode_to_string() (echoing string_to_mode), make it take a normal char * argument. stat: collapse big switch/case statements that only have one line each into if/else staircase (much fewer lines of code). Remove return type (other stat implementations print ? for unknown escapes, so do that here). Inline do_stat() and do_statfs(). Set default string in normal local variable "format". Remove unnecessary struct d. Restructure stat logic to "if (flagf && !statfs()) else if (!flagf && !stat()) else perror_msg();" Teach %N to add -> symlink. Judicious use of putchar() instead of xputc to let FILE * do its job collating output.
Diffstat (limited to 'toys/pending')
-rw-r--r--toys/pending/stat.c262
1 files changed, 86 insertions, 176 deletions
diff --git a/toys/pending/stat.c b/toys/pending/stat.c
index db6fa4c9..8e0d2dc8 100644
--- a/toys/pending/stat.c
+++ b/toys/pending/stat.c
@@ -44,7 +44,7 @@ GLOBALS(
} stat;
struct passwd *user_name;
struct group *group_name;
- char *ftname, access_str[11];
+ char *ftname;
)
@@ -59,198 +59,108 @@ static void date_stat_format(struct timespec *ts)
xprintf("%s.%09d", toybuf, ts->tv_nsec);
}
-static int print_stat(char type)
+static void print_stat(char type)
{
struct stat *stat = (struct stat *)&TT.stat;
- switch (type) {
- case 'a':
- xprintf("%04lo", stat->st_mode & ~S_IFMT);
- break;
- case 'A':
- xprintf("%s", TT.access_str);
- break;
-
- case 'b':
- xprintf("%llu", stat->st_blocks);
- break;
-
- case 'B':
- xprintf("%lu", stat->st_blksize);
- break;
- case 'd':
- xprintf("%ldd", stat->st_dev);
- break;
- case 'D':
- xprintf("%llxh", stat->st_dev);
- break;
- case 'f':
- xprintf("%lx", stat->st_mode);
- break;
- case 'F':
- xprintf("%s", TT.ftname);
- break;
- case 'g':
- xprintf("%lu", stat->st_gid);
- break;
- case 'G':
- xprintf("%8s", TT.user_name->pw_name);
- break;
- case 'h':
- xprintf("%lu", stat->st_nlink);
- break;
- case 'i':
- xprintf("%llu", stat->st_ino);
- break;
- case 'N':
- xprintf("`%s'", *toys.optargs);
- break;
- case 'o':
- xprintf("%lu", stat->st_blksize);
- break;
- case 's':
- xprintf("%llu", stat->st_size);
- break;
- case 'u':
- xprintf("%lu", stat->st_uid);
- break;
- case 'U':
- xprintf("%8s", TT.user_name->pw_name);
- break;
-
- case 'x':
- date_stat_format((void *)&stat->st_atime);
- break;
- case 'X':
- xprintf("%llu", (long long)stat->st_atime);
- break;
- case 'y':
- date_stat_format((void *)&stat->st_mtime);
- break;
- case 'Y':
- xprintf("%llu", (long long)stat->st_mtime);
- break;
- case 'z':
- date_stat_format((void *)&stat->st_ctime);
- break;
- case 'Z':
- xprintf("%llu", (long long)stat->st_ctime);
- break;
-
- default:
- return 1;
- }
- return 0;
+ if (type == 'a') xprintf("%04lo", stat->st_mode & ~S_IFMT);
+ else if (type == 'A') {
+ char str[11];
+
+ mode_to_string(stat->st_mode, str);
+ xprintf("%s", str);
+ } else if (type == 'b') xprintf("%llu", stat->st_blocks);
+ else if (type == 'B') xprintf("%lu", stat->st_blksize);
+ else if (type == 'd') xprintf("%ldd", stat->st_dev);
+ else if (type == 'D') xprintf("%llxh", stat->st_dev);
+ else if (type == 'f') xprintf("%lx", stat->st_mode);
+ else if (type == 'F') xprintf("%s", TT.ftname);
+ else if (type == 'g') xprintf("%lu", stat->st_gid);
+ else if (type == 'G') xprintf("%8s", TT.user_name->pw_name);
+ else if (type == 'h') xprintf("%lu", stat->st_nlink);
+ else if (type == 'i') xprintf("%llu", stat->st_ino);
+ else if (type == 'N') {
+ xprintf("`%s'", *toys.optargs);
+ if (S_ISLNK(stat->st_mode))
+ if (0<readlink(*toys.optargs, toybuf, sizeof(toybuf)))
+ xprintf(" -> `%s'", toybuf);
+ } else if (type == 'o') xprintf("%lu", stat->st_blksize);
+ else if (type == 's') xprintf("%llu", stat->st_size);
+ else if (type == 'u') xprintf("%lu", stat->st_uid);
+ else if (type == 'U') xprintf("%8s", TT.user_name->pw_name);
+ else if (type == 'x') date_stat_format((void *)&stat->st_atime);
+ else if (type == 'X') xprintf("%llu", (long long)stat->st_atime);
+ else if (type == 'y') date_stat_format((void *)&stat->st_mtime);
+ else if (type == 'Y') xprintf("%llu", (long long)stat->st_mtime);
+ else if (type == 'z') date_stat_format((void *)&stat->st_ctime);
+ else if (type == 'Z') xprintf("%llu", (long long)stat->st_ctime);
+ else xprintf("?");
}
-static int print_statfs(char type) {
+static void print_statfs(char type) {
struct statfs *statfs = (struct statfs *)&TT.stat;
- switch (type) {
- case 'a':
- xprintf("%lu", statfs->f_bavail);
- break;
- case 'b':
- xprintf("%lu", statfs->f_blocks);
- break;
- case 'c':
- xprintf("%lu", statfs->f_files);
- break;
- case 'd':
- xprintf("%lu", statfs->f_ffree);
- break;
- case 'f':
- xprintf("%lu", statfs->f_bfree);
- break;
- case 'i':
- xprintf("%x%x", statfs->f_fsid.__val[0], statfs->f_fsid.__val[1]);
- break;
- case 'l':
- xprintf("%ld", statfs->f_namelen);
- break;
- case 's':
- xprintf("%d", statfs->f_frsize);
- break;
- case 'S':
- xprintf("%d", statfs->f_bsize);
- break;
- case 't':
- xprintf("%lx", statfs->f_type);
- break;
- default:
- return 1;
- }
- return 0;
-}
-
-static int do_stat(char *path)
-{
- struct stat *statf = (struct stat*)&TT.stat;
- char *types = "character device\0directory\0block device\0" \
- "regular file\0symbolic link\0socket\0FIFO (named pipe)";
- int i, filetype;
-
- if (stat(path, statf) < 0) return 1;
-
- filetype = statf->st_mode & S_IFMT;
- TT.ftname = types;
- for (i = 1; filetype != (i*8192) && i < 7; i++)
- TT.ftname += strlen(TT.ftname)+1;
- if (!statf->st_size && filetype == S_IFREG)
- TT.ftname = "regular empty file";
-
- // check user and group name
- TT.user_name = getpwuid(statf->st_uid);
- TT.group_name = getgrgid(statf->st_gid);
- // function to get access in human readable format
- format_mode(&TT.access_str, statf->st_mode);
-
- return 0;
-}
-
-static int do_statfs(char *path)
-{
- return statfs(path, (void *)&TT.stat) < 0;
+ if (type == 'a') xprintf("%lu", statfs->f_bavail);
+ else if (type == 'b') xprintf("%lu", statfs->f_blocks);
+ else if (type == 'c') xprintf("%lu", statfs->f_files);
+ else if (type == 'd') xprintf("%lu", statfs->f_ffree);
+ else if (type == 'f') xprintf("%lu", statfs->f_bfree);
+ else if (type == 'l') xprintf("%ld", statfs->f_namelen);
+ else if (type == 't') xprintf("%lx", statfs->f_type);
+ else if (type == 'i')
+ xprintf("%x%x", statfs->f_fsid.__val[0], statfs->f_fsid.__val[1]);
+ else if (type == 's') xprintf("%d", statfs->f_frsize);
+ else if (type == 'S') xprintf("%d", statfs->f_bsize);
+ else xprintf("?");
}
void stat_main(void)
{
- struct {
- char *fmt;
- int (*do_it)(char*);
- int (*print_it)(char);
- } d, ds[2] = {
- {" File: %N\n"
- " Size: %s\t Blocks: %b\t IO Blocks: %B\t%F\n"
- "Device: %D\t Inode: %i\t Links: %h\n"
- "Access: (%a/%A)\tUid: (%u/%U)\tGid: (%g/%G)\n"
- "Access: %x\nModify: %y\nChange: %z",
- do_stat, print_stat},
- {" File: \"%n\"\n"
- " ID: %i Namelen: %l Type: %t\n"
- "Block Size: %s Fundamental block size: %S\n"
- "Blocks: Total: %b\tFree: %f\tAvailable: %a\n"
- "Inodes: Total: %c\tFree: %d",
- do_statfs, print_statfs}
- };
-
- d = ds[toys.optflags & FLAG_f];
- if (toys.optflags & FLAG_c) d.fmt = TT.fmt;
+ int flagf = toys.optflags & FLAG_f;
+ char *format = flagf
+ ? " File: \"%n\"\n ID: %i Namelen: %l Type: %t\n"
+ "Block Size: %s Fundamental block size: %S\n"
+ "Blocks: Total: %b\tFree: %f\tAvailable: %a\n"
+ "Inodes: Total: %c\tFree: %d"
+ : " File: %N\n Size: %s\t Blocks: %b\t IO Blocks: %B\t%F\n"
+ "Device: %D\t Inode: %i\t Links: %h\n"
+ "Access: (%a/%A)\tUid: (%u/%U)\tGid: (%g/%G)\n"
+ "Access: %x\nModify: %y\nChange: %z";
+
+ if (toys.optflags & FLAG_c) format = TT.fmt;
for (; *toys.optargs; toys.optargs++) {
- char *format = d.fmt;
- if (d.do_it(*toys.optargs)) {
+ char *f;
+
+ if (flagf && !statfs(*toys.optargs, (void *)&TT.stat));
+ else if (!flagf && !lstat(*toys.optargs, (void *)&TT.stat)) {
+ struct stat *stat = (struct stat*)&TT.stat;
+ char *types = "character device\0directory\0block device\0" \
+ "regular file\0symbolic link\0socket\0FIFO (named pipe)";
+ int i, filetype;
+
+ filetype = stat->st_mode & S_IFMT;
+ TT.ftname = types;
+ for (i = 1; filetype != (i*8192) && i < 7; i++)
+ TT.ftname += strlen(TT.ftname)+1;
+ if (!stat->st_size && filetype == S_IFREG)
+ TT.ftname = "regular empty file";
+
+ // check user and group name
+ TT.user_name = getpwuid(stat->st_uid);
+ TT.group_name = getgrgid(stat->st_gid);
+ } else {
perror_msg("'%s'", *toys.optargs);
continue;
}
- for (; *format; format++) {
- if (*format != '%') {
- xputc(*format);
- continue;
+
+ for (f = format; *f; f++) {
+ if (*f != '%') putchar(*f);
+ else {
+ if (*++f == 'n') xprintf("%s", *toys.optargs);
+ else if (flagf) print_statfs(*f);
+ else print_stat(*f);
}
- format++;
- if (*format == 'n') xprintf("%s", *toys.optargs);
- else if (d.print_it(*format)) xputc(*format);
}
xputc('\n');
}