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-rw-r--r--strvec.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/strvec.c b/strvec.c
new file mode 100644
index 0000000000..21dce0a7a4
--- /dev/null
+++ b/strvec.c
@@ -0,0 +1,109 @@
+#include "cache.h"
+#include "strvec.h"
+#include "strbuf.h"
+
+const char *empty_strvec[] = { NULL };
+
+void strvec_init(struct strvec *array)
+{
+ array->v = empty_strvec;
+ array->nr = 0;
+ array->alloc = 0;
+}
+
+static void strvec_push_nodup(struct strvec *array, const char *value)
+{
+ if (array->v == empty_strvec)
+ array->v = NULL;
+
+ ALLOC_GROW(array->v, array->nr + 2, array->alloc);
+ array->v[array->nr++] = value;
+ array->v[array->nr] = NULL;
+}
+
+const char *strvec_push(struct strvec *array, const char *value)
+{
+ strvec_push_nodup(array, xstrdup(value));
+ return array->v[array->nr - 1];
+}
+
+const char *strvec_pushf(struct strvec *array, const char *fmt, ...)
+{
+ va_list ap;
+ struct strbuf v = STRBUF_INIT;
+
+ va_start(ap, fmt);
+ strbuf_vaddf(&v, fmt, ap);
+ va_end(ap);
+
+ strvec_push_nodup(array, strbuf_detach(&v, NULL));
+ return array->v[array->nr - 1];
+}
+
+void strvec_pushl(struct strvec *array, ...)
+{
+ va_list ap;
+ const char *arg;
+
+ va_start(ap, array);
+ while ((arg = va_arg(ap, const char *)))
+ strvec_push(array, arg);
+ va_end(ap);
+}
+
+void strvec_pushv(struct strvec *array, const char **items)
+{
+ for (; *items; items++)
+ strvec_push(array, *items);
+}
+
+void strvec_pop(struct strvec *array)
+{
+ if (!array->nr)
+ return;
+ free((char *)array->v[array->nr - 1]);
+ array->v[array->nr - 1] = NULL;
+ array->nr--;
+}
+
+void strvec_split(struct strvec *array, const char *to_split)
+{
+ while (isspace(*to_split))
+ to_split++;
+ for (;;) {
+ const char *p = to_split;
+
+ if (!*p)
+ break;
+
+ while (*p && !isspace(*p))
+ p++;
+ strvec_push_nodup(array, xstrndup(to_split, p - to_split));
+
+ while (isspace(*p))
+ p++;
+ to_split = p;
+ }
+}
+
+void strvec_clear(struct strvec *array)
+{
+ if (array->v != empty_strvec) {
+ int i;
+ for (i = 0; i < array->nr; i++)
+ free((char *)array->v[i]);
+ free(array->v);
+ }
+ strvec_init(array);
+}
+
+const char **strvec_detach(struct strvec *array)
+{
+ if (array->v == empty_strvec)
+ return xcalloc(1, sizeof(const char *));
+ else {
+ const char **ret = array->v;
+ strvec_init(array);
+ return ret;
+ }
+}