X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fstrv.c;h=a5f8a2aff60e3ea36c82998c0f43e003717efbdb;hb=30fbcf24460263961855e0ce4d8867fd2af3e149;hp=6448f3170fc837ac6ef7035fb8506bc9c430ab52;hpb=b2fadec6048adb3596f2633cb7fe7a49f5937a18;p=elogind.git

diff --git a/src/shared/strv.c b/src/shared/strv.c
index 6448f3170..a5f8a2aff 100644
--- a/src/shared/strv.c
+++ b/src/shared/strv.c
@@ -52,6 +52,23 @@ char *strv_find_prefix(char **l, const char *name) {
         return NULL;
 }
 
+char *strv_find_startswith(char **l, const char *name) {
+        char **i, *e;
+
+        assert(name);
+
+        /* Like strv_find_prefix, but actually returns only the
+         * suffix, not the whole item */
+
+        STRV_FOREACH(i, l) {
+                e = startswith(*i, name);
+                if (e)
+                        return e;
+        }
+
+        return NULL;
+}
+
 void strv_free(char **l) {
         char **k;
 
@@ -231,40 +248,6 @@ char **strv_split(const char *s, const char *separator) {
         return r;
 }
 
-int strv_split_quoted(char ***t, const char *s) {
-        const char *word, *state;
-        size_t l;
-        unsigned n, i;
-        char **r;
-
-        assert(s);
-
-        n = 0;
-        FOREACH_WORD_QUOTED(word, l, s, state)
-                n++;
-        if (!isempty(state))
-                /* bad syntax */
-                return -EINVAL;
-
-        r = new(char*, n+1);
-        if (!r)
-                return -ENOMEM;
-
-        i = 0;
-        FOREACH_WORD_QUOTED(word, l, s, state) {
-                r[i] = cunescape_length(word, l);
-                if (!r[i]) {
-                        strv_free(r);
-                        return -ENOMEM;
-                }
-                i++;
-        }
-
-        r[i] = NULL;
-        *t = r;
-        return 0;
-}
-
 char **strv_split_newlines(const char *s) {
         char **l;
         unsigned n;
@@ -290,6 +273,41 @@ char **strv_split_newlines(const char *s) {
         return l;
 }
 
+int strv_split_quoted(char ***t, const char *s, bool relax) {
+        size_t n = 0, allocated = 0;
+        _cleanup_strv_free_ char **l = NULL;
+        int r;
+
+        assert(t);
+        assert(s);
+
+        for (;;) {
+                _cleanup_free_ char *word = NULL;
+
+                r = unquote_first_word(&s, &word, relax);
+                if (r < 0)
+                        return r;
+                if (r == 0)
+                        break;
+
+                if (!GREEDY_REALLOC(l, allocated, n + 2))
+                        return -ENOMEM;
+
+                l[n++] = word;
+                word = NULL;
+
+                l[n] = NULL;
+        }
+
+        if (!l)
+                l = new0(char*, 1);
+
+        *t = l;
+        l = NULL;
+
+        return 0;
+}
+
 char *strv_join(char **l, const char *separator) {
         char *r, *e;
         char **s;
@@ -363,13 +381,19 @@ char *strv_join_quoted(char **l) {
 
 int strv_push(char ***l, char *value) {
         char **c;
-        unsigned n;
+        unsigned n, m;
 
         if (!value)
                 return 0;
 
         n = strv_length(*l);
-        c = realloc(*l, sizeof(char*) * (n + 2));
+
+        /* increase and check for overflow */
+        m = n + 2;
+        if (m < n)
+                return -ENOMEM;
+
+        c = realloc_multiply(*l, sizeof(char*), m);
         if (!c)
                 return -ENOMEM;
 
@@ -382,13 +406,19 @@ int strv_push(char ***l, char *value) {
 
 int strv_push_prepend(char ***l, char *value) {
         char **c;
-        unsigned n, i;
+        unsigned n, m, i;
 
         if (!value)
                 return 0;
 
         n = strv_length(*l);
-        c = new(char*, n + 2);
+
+        /* increase and check for overflow */
+        m = n + 2;
+        if (m < n)
+                return -ENOMEM;
+
+        c = new(char*, m);
         if (!c)
                 return -ENOMEM;
 
@@ -557,6 +587,17 @@ char **strv_sort(char **l) {
         return l;
 }
 
+bool strv_equal(char **a, char **b) {
+        if (!a || !b)
+                return a == b;
+
+        for ( ; *a || *b; ++a, ++b)
+                if (!streq_ptr(*a, *b))
+                        return false;
+
+        return true;
+}
+
 void strv_print(char **l) {
         char **s;