Merge pull request #10152 from yuwata/udev-use-extract

[thirdparty/systemd.git] / src / basic / string-util.c

diff --git a/src/basic/string-util.c b/src/basic/string-util.c
index 7ea478883b23ea88088f13487318e5f4478f749d..c6dad5275fe16b08e4fac292bb12315845479a52 100644 (file)
--- a/src/basic/string-util.c
+++ b/src/basic/string-util.c
@@ -1,9 +1,4 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-***/
 
 #include <errno.h>
 #include <stdarg.h>
@@ -133,7 +128,7 @@ static size_t strcspn_escaped(const char *s, const char *reject) {
 }
 
 /* Split a string into words. */
-const char* split(const char **state, size_t *l, const char *separator, bool quoted) {
+const char* split(const char **state, size_t *l, const char *separator, SplitFlags flags) {
         const char *current;
 
         current = *state;
@@ -149,20 +144,24 @@ const char* split(const char **state, size_t *l, const char *separator, bool quo
                 return NULL;
         }
 
-        if (quoted && strchr("\'\"", *current)) {
+        if (flags & SPLIT_QUOTES && strchr("\'\"", *current)) {
                 char quotechars[2] = {*current, '\0'};
 
                 *l = strcspn_escaped(current + 1, quotechars);
                 if (current[*l + 1] == '\0' || current[*l + 1] != quotechars[0] ||
                     (current[*l + 2] && !strchr(separator, current[*l + 2]))) {
                         /* right quote missing or garbage at the end */
+                        if (flags & SPLIT_RELAX) {
+                                *state = current + *l + 1 + (current[*l + 1] != '\0');
+                                return current + 1;
+                        }
                         *state = current;
                         return NULL;
                 }
                 *state = current++ + *l + 2;
-        } else if (quoted) {
+        } else if (flags & SPLIT_QUOTES) {
                 *l = strcspn_escaped(current, separator);
-                if (current[*l] && !strchr(separator, current[*l])) {
+                if (current[*l] && !strchr(separator, current[*l]) && !(flags & SPLIT_RELAX)) {
                         /* unfinished escape */
                         *state = current;
                         return NULL;
@@ -541,7 +540,7 @@ char *ellipsize_mem(const char *s, size_t old_length, size_t new_length, unsigne
                 return strdup("");
 
         /* If no multibyte characters use ascii_ellipsize_mem for speed */
-        if (ascii_is_valid(s))
+        if (ascii_is_valid_n(s, old_length))
                 return ascii_ellipsize_mem(s, old_length, new_length, percent);
 
         x = ((new_length - 1) * percent) / 100;
@@ -1009,7 +1008,7 @@ int free_and_strdup(char **p, const char *s) {
 
         assert(p);
 
-        /* Replaces a string pointer with an strdup()ed new string,
+        /* Replaces a string pointer with a strdup()ed new string,
          * possibly freeing the old one. */
 
         if (streq_ptr(*p, s))
@@ -1028,6 +1027,32 @@ int free_and_strdup(char **p, const char *s) {
         return 1;
 }
 
+int free_and_strndup(char **p, const char *s, size_t l) {
+        char *t;
+
+        assert(p);
+        assert(s || l == 0);
+
+        /* Replaces a string pointer with a strndup()ed new string,
+         * freeing the old one. */
+
+        if (!*p && !s)
+                return 0;
+
+        if (*p && s && strneq(*p, s, l) && (l > strlen(*p) || (*p)[l] == '\0'))
+                return 0;
+
+        if (s) {
+                t = strndup(s, l);
+                if (!t)
+                        return -ENOMEM;
+        } else
+                t = NULL;
+
+        free_and_replace(*p, t);
+        return 1;
+}
+
 #if !HAVE_EXPLICIT_BZERO
 /*
  * Pointer to memset is volatile so that compiler must de-reference