The patch titled
Subject: lib/string_helpers: move ESCAPE_NP check inside 'else' branch in a loop
has been added to the -mm tree. Its filename is
lib-string_helpers-move-escape_np-check-inside-else-branch-in-a-loop.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/lib-string_helpers-move-escape_np-check-inside-else-branch-in-a-loop.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/lib-string_helpers-move-escape_np-check-inside-else-branch-in-a-loop.patch
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------------------------------------------------------
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Subject: lib/string_helpers: move ESCAPE_NP check inside 'else' branch in a loop
Refactor code to have better readability by moving ESCAPE_NP handling
inside 'else' branch in the loop.
No functional change intended.
Link: https://lkml.kernel.org/r/20210504180819.73127-3-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Chuck Lever <chuck.lever@xxxxxxxxxx>
Cc: "J. Bruce Fields" <bfields@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/string_helpers.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
--- a/lib/string_helpers.c~lib-string_helpers-move-escape_np-check-inside-else-branch-in-a-loop
+++ a/lib/string_helpers.c
@@ -452,10 +452,10 @@ static bool escape_hex(unsigned char c,
* The process of escaping byte buffer includes several parts. They are applied
* in the following sequence.
*
- * 1. The character is matched to the printable class, if asked, and in
- * case of match it passes through to the output.
- * 2. The character is not matched to the one from @only string and thus
+ * 1. The character is not matched to the one from @only string and thus
* must go as-is to the output.
+ * 2. The character is matched to the printable class, if asked, and in
+ * case of match it passes through to the output.
* 3. The character is checked if it falls into the class given by @flags.
* %ESCAPE_OCTAL and %ESCAPE_HEX are going last since they cover any
* character. Note that they actually can't go together, otherwise
@@ -506,19 +506,22 @@ int string_escape_mem(const char *src, s
/*
* Apply rules in the following sequence:
- * - the character is printable, when @flags has
- * %ESCAPE_NP bit set
* - the @only string is supplied and does not contain a
* character under question
+ * - the character is printable, when @flags has
+ * %ESCAPE_NP bit set
* - the character doesn't fall into a class of symbols
* defined by given @flags
* In these cases we just pass through a character to the
* output buffer.
*/
- if ((flags & ESCAPE_NP && isprint(c)) ||
- (is_dict && !strchr(only, c))) {
+ if (is_dict && !strchr(only, c)) {
/* do nothing */
} else {
+ if (isprint(c) &&
+ flags & ESCAPE_NP && escape_passthrough(c, &p, end))
+ continue;
+
if (flags & ESCAPE_SPACE && escape_space(c, &p, end))
continue;
_
Patches currently in -mm which might be from andriy.shevchenko@xxxxxxxxxxxxxxx are
lib-string_helpers-switch-to-use-bit-macro.patch
lib-string_helpers-move-escape_np-check-inside-else-branch-in-a-loop.patch
lib-string_helpers-drop-indentation-level-in-string_escape_mem.patch
lib-string_helpers-introduce-escape_na-for-escaping-non-ascii.patch
lib-string_helpers-introduce-escape_nap-to-escape-non-ascii-and-non-printable.patch
lib-string_helpers-allow-to-append-additional-characters-to-be-escaped.patch
lib-test-string_helpers-print-flags-in-hexadecimal-format.patch
lib-test-string_helpers-get-rid-of-trailing-comma-in-terminators.patch
lib-test-string_helpers-add-test-cases-for-new-features.patch
maintainers-add-myself-as-designated-reviewer-for-generic-string-library.patch
seq_file-introduce-seq_escape_mem.patch
seq_file-add-seq_escape_str-as-replica-of-string_escape_str.patch
seq_file-convert-seq_escape-to-use-seq_escape_str.patch
nfsd-avoid-non-flexible-api-in-seq_quote_mem.patch
seq_file-drop-unused-_escape_mem_ascii.patch
