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authorRob Landley <rob@landley.net>2019-05-29 16:02:16 -0500
committerRob Landley <rob@landley.net>2019-05-29 16:02:16 -0500
commita58d45a7d0afd1667dd1e5c8e318944a02aeab28 (patch)
treed06a7908bb3de7c139b46d6e4322cac22e0f00f4 /toys/posix
parent40f6cc7e04e17107f95cab165b2d9021d3946ac6 (diff)
downloadtoybox-a58d45a7d0afd1667dd1e5c8e318944a02aeab28.tar.gz
Teach find -printf about %.Ns patterns, tweak help text, add tests.
Diffstat (limited to 'toys/posix')
-rw-r--r--toys/posix/find.c137
1 files changed, 67 insertions, 70 deletions
diff --git a/toys/posix/find.c b/toys/posix/find.c
index 8b757b8e..3f24c0dc 100644
--- a/toys/posix/find.c
+++ b/toys/posix/find.c
@@ -52,17 +52,13 @@ config FIND
Commands substitute "{}" with matched file. End with ";" to run each file,
or "+" (next argument after "{}") to collect and run with multiple files.
- FORMAT characters are \ escapes and:
- %f basename
- %g textual gid %G numeric gid
- %i decimal inode
- %l target of symlink (or empty)
- %m octal mode, no leading 0 %M type and mode in ls format
- %p filename %P filename without root
- %s size in bytes
- %T@ last modification unix time with fraction
- %u textual uid %U numeric uid
- %Z security context
+ -printf FORMAT characters are \ escapes and:
+ %b 512 byte blocks used
+ %f basename %g textual gid %G numeric gid
+ %i decimal inode %l target of symlink %m octal mode
+ %M ls format type/mode %p path to file %P path to file minus DIR
+ %s size in bytes %T@ mod time as unixtime
+ %u username %U numeric uid %Z security context
*/
#define FOR_find
@@ -222,7 +218,7 @@ static int do_find(struct dirtree *new)
if (new->parent) {
if (!dirtree_notdotdot(new)) return 0;
if (TT.xdev && new->st.st_dev != new->parent->st.st_dev) recurse = 0;
- }
+ } else TT.start = new->name;
if (S_ISDIR(new->st.st_mode)) {
// Descending into new directory
@@ -550,62 +546,65 @@ static int do_find(struct dirtree *new)
// Argument consumed, skip the check.
goto cont;
} else if (!strcmp(s, "printf")) {
- char *fmt = ss[1], *path, *lnk, *start, mode_str[11], ch;
+ char *fmt, *ff, next[32], buf[64], ch;
+ long ll;
+ int len;
print++;
- if (check) {
- for (; *fmt; fmt++) {
- if (*fmt == '\\') {
- if (!(ch = unescape(fmt[1])))
- error_exit("bad \\ escape: %c", fmt[1]);
- fmt++;
- putchar(ch);
- } else if (*fmt == '%') {
- switch (*++fmt) {
- case '%': putchar('%'); break;
- case 'f': printf("%s", new->name); break;
- case 'G': printf("%d", new->st.st_gid); break;
- case 'g': printf("%s", getgroupname(new->st.st_gid)); break;
- case 'i': printf("%lld", (long long) new->st.st_ino); break;
- case 'l':
- path = dirtree_path(new, 0);
- lnk = xreadlink(path);
- printf("%s", lnk ? lnk : "");
- free(lnk);
- free(path);
- break;
- case 'M':
- mode_to_string(new->st.st_mode, mode_str);
- printf("%s", mode_str);
- break;
- case 'm': printf("%o", new->st.st_mode & ~S_IFMT); break;
- case 'P':
- start = getdirname(TT.start);
- path = dirtree_path(new, 0);
- printf("%s", path + 1+strlen(start));
- free(path);
- free(start);
- break;
- case 'p':
- path = dirtree_path(new, 0);
- printf("%s", path);
- free(path);
- break;
- case 's': printf("%lld", (long long) new->st.st_size); break;
- case 'T':
- switch (*++fmt) {
- case '@':
- printf("%ld.%ld", new->st.st_mtim.tv_sec,
+ if (check) for (fmt = ss[1]; *fmt; fmt++) {
+ // Print the parts that aren't escapes
+ if (*fmt == '\\') {
+ if (!(ch = unescape(*++fmt))) error_exit("bad \\%c", *fmt);
+ putchar(ch);
+ } else if (*fmt != '%') putchar(*fmt);
+ else if (*++fmt == '%') putchar('%');
+ else {
+ fmt = next_printf(ff = fmt-1, 0);
+ if ((len = fmt-ff)>28) error_exit("bad %.*s", len+1, ff);
+ memcpy(next, ff, len);
+ ff = 0;
+ ch = *fmt;
+
+ // long long is its own stack size on LP64, so handle seperately
+ if (ch == 'i' || ch == 's') {
+ strcpy(next+len, "lld");
+ printf(next, (ch == 'i') ? (long long)new->st.st_ino
+ : (long long)new->st.st_size);
+ } else {
+
+ // LP64 says these are all a single "long" argument to printf
+ strcpy(next+len, "s");
+ if (ch == 'G') next[len] = 'd', ll = new->st.st_gid;
+ else if (ch == 'm') next[len] = 'o', ll = new->st.st_mode&~S_IFMT;
+ else if (ch == 'U') next[len] = 'd', ll = new->st.st_uid;
+ else if (ch == 'f') ll = (long)new->name;
+ else if (ch == 'g') ll = (long)getgroupname(new->st.st_gid);
+ else if (ch == 'u') ll = (long)getusername(new->st.st_uid);
+ else if (ch == 'l') {
+ char *path = dirtree_path(new, 0);
+
+ ll = (long)(ff = xreadlink(path));
+ free(path);
+ if (!ll) ll = (long)"";
+ } else if (ch == 'M') {
+ mode_to_string(new->st.st_mode, buf);
+ ll = (long)buf;
+ } else if (ch == 'P') {
+ ch = *TT.start;
+ *TT.start = 0;
+ ll = (long)(ff = dirtree_path(new, 0));
+ *TT.start = ch;
+ } else if (ch == 'p') ll = (long)(ff = dirtree_path(new, 0));
+ else if (ch == 'T') {
+ if (*++fmt!='@') error_exit("bad -printf %%T: %%T%c", *fmt);
+ sprintf(buf, "%ld.%ld", new->st.st_mtim.tv_sec,
new->st.st_mtim.tv_nsec);
- break;
- default: error_exit("bad %%T variant: %%T%c", *fmt);
- }
- break;
- case 'U': printf("%d", new->st.st_uid); break;
- case 'u': printf("%s", getusername(new->st.st_uid)); break;
- default: error_exit("bad %% specifier: %c", *fmt);
- }
- } else putchar(*fmt);
+ ll = (long)buf;
+ } else error_exit("bad -printf %%%c", ch);
+
+ printf(next, ll);
+ free(ff);
+ }
}
}
} else goto error;
@@ -659,11 +658,9 @@ void find_main(void)
do_find(0);
// Loop through paths
- for (i = 0; i < len; i++) {
- TT.start = ss[i];
- dirtree_flagread(TT.start,
- DIRTREE_SYMFOLLOW*!!(toys.optflags&(FLAG_H|FLAG_L)), do_find);
- }
+ for (i = 0; i < len; i++)
+ dirtree_flagread(ss[i], DIRTREE_SYMFOLLOW*!!(toys.optflags&(FLAG_H|FLAG_L)),
+ do_find);
execdir(0, 1);