diff options
Diffstat (limited to 'src/shared/strv.c')
| -rw-r--r-- | src/shared/strv.c | 123 |
1 files changed, 72 insertions, 51 deletions
diff --git a/src/shared/strv.c b/src/shared/strv.c index c8d856344c..6b76d0eaef 100644 --- a/src/shared/strv.c +++ b/src/shared/strv.c @@ -64,28 +64,32 @@ void strv_free(char **l) { free(l); } +void strv_freep(char ***l) { + if (!l) + return; + + strv_free(*l); + *l = NULL; +} + char **strv_copy(char **l) { char **r, **k; - k = r = new(char*, strv_length(l)+1); - if (!k) + k = r = new(char*, strv_length(l) + 1); + if (!r) return NULL; if (l) - for (; *l; k++, l++) - if (!(*k = strdup(*l))) - goto fail; + for (; *l; k++, l++) { + *k = strdup(*l); + if (!*k) { + strv_free(r); + return NULL; + } + } *k = NULL; return r; - -fail: - for (k--; k >= r; k--) - free(*k); - - free(r); - - return NULL; } unsigned strv_length(char **l) { @@ -155,13 +159,7 @@ char **strv_new_ap(const char *x, va_list ap) { return a; fail: - - for (; i > 0; i--) - if (a[i-1]) - free(a[i-1]); - - free(a); - + strv_free(a); return NULL; } @@ -257,16 +255,21 @@ char **strv_split(const char *s, const char *separator) { FOREACH_WORD_SEPARATOR(w, l, s, separator, state) n++; - if (!(r = new(char*, n+1))) + r = new(char*, n+1); + if (!r) return NULL; i = 0; - FOREACH_WORD_SEPARATOR(w, l, s, separator, state) - if (!(r[i++] = strndup(w, l))) { + FOREACH_WORD_SEPARATOR(w, l, s, separator, state) { + r[i] = strndup(w, l); + if (!r[i]) { strv_free(r); return NULL; } + i++; + } + r[i] = NULL; return r; } @@ -284,15 +287,19 @@ char **strv_split_quoted(const char *s) { FOREACH_WORD_QUOTED(w, l, s, state) n++; - if (!(r = new(char*, n+1))) + r = new(char*, n+1); + if (!r) return NULL; i = 0; - FOREACH_WORD_QUOTED(w, l, s, state) - if (!(r[i++] = cunescape_length(w, l))) { + FOREACH_WORD_QUOTED(w, l, s, state) { + r[i] = cunescape_length(w, l); + if (!r[i]) { strv_free(r); return NULL; } + i++; + } r[i] = NULL; return r; @@ -315,7 +322,8 @@ char *strv_join(char **l, const char *separator) { n += strlen(*s); } - if (!(r = new(char, n+1))) + r = new(char, n+1); + if (!r) return NULL; e = r; @@ -344,22 +352,21 @@ char **strv_append(char **l, const char *s) { if (!r) return NULL; - for (k = r; *l; k++, l++) - if (!(*k = strdup(*l))) + for (k = r; *l; k++, l++) { + *k = strdup(*l); + if (!*k) goto fail; + } - if (!(*(k++) = strdup(s))) + k[0] = strdup(s); + if (!k[0]) goto fail; - *k = NULL; + k[1] = NULL; return r; fail: - for (k--; k >= r; k--) - free(*k); - - free(r); - + strv_free(r); return NULL; } @@ -454,7 +461,8 @@ static int env_append(char **r, char ***k, char **a) { else free(*j); - if (!(*j = strdup(*a))) + *j = strdup(*a); + if (!*j) return -ENOMEM; } @@ -476,7 +484,8 @@ char **strv_env_merge(unsigned n_lists, ...) { } va_end(ap); - if (!(r = new(char*, n+1))) + r = new(char*, n+1); + if (!r) return NULL; k = r; @@ -495,11 +504,7 @@ char **strv_env_merge(unsigned n_lists, ...) { fail: va_end(ap); - - for (k--; k >= r; k--) - free(*k); - - free(r); + strv_free(r); return NULL; } @@ -611,7 +616,8 @@ char **strv_env_set(char **x, const char *p) { /* Overrides the env var setting of p, returns a new copy */ - if (!(r = new(char*, strv_length(x)+2))) + r = new(char*, strv_length(x)+2); + if (!r) return NULL; k = r; @@ -626,11 +632,7 @@ char **strv_env_set(char **x, const char *p) { return r; fail: - for (k--; k >= r; k--) - free(*k); - - free(r); - + strv_free(r); return NULL; } @@ -690,7 +692,8 @@ char **strv_parse_nulstr(const char *s, size_t l) { if (s[l-1] != 0) c++; - if (!(v = new0(char*, c+1))) + v = new0(char*, c+1); + if (!v) return NULL; p = s; @@ -699,11 +702,14 @@ char **strv_parse_nulstr(const char *s, size_t l) { e = memchr(p, 0, s + l - p); - if (!(v[i++] = strndup(p, e ? e - p : s + l - p))) { + v[i] = strndup(p, e ? e - p : s + l - p); + if (!v[i]) { strv_free(v); return NULL; } + i++; + if (!e) break; @@ -727,3 +733,18 @@ bool strv_overlap(char **a, char **b) { return false; } + +static int str_compare(const void *_a, const void *_b) { + const char **a = (const char**) _a, **b = (const char**) _b; + + return strcmp(*a, *b); +} + +char **strv_sort(char **l) { + + if (strv_isempty(l)) + return l; + + qsort(l, strv_length(l), sizeof(char*), str_compare); + return l; +} |