some more work on the cli

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@24 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/tokenizer.c

@@ -0,0 +1,64 @@
+#include <string.h>
+#include <assert.h>
+#include <stdlib.h>
+
+#include "tokenizer.h"
+#include "dynarray.h"
+
+struct tokenizer {
+    struct dynarray *dynarray;
+};
+
+static void token_free(void *p, void *userdata) {
+    free(p);
+}
+
+static void parse(struct dynarray*a, const char *s, unsigned args) {
+    int infty = 0;
+    const char delimiter[] = " \t\n\r";
+    const char *p;
+    assert(a && s);
+
+    if (args == 0)
+        infty = 1;
+
+    p = s+strspn(s, delimiter);
+    while (*p && (infty || args >= 2)) {
+        size_t l = strcspn(p, delimiter);
+        char *n = strndup(p, l);
+        assert(n);
+        dynarray_append(a, n);
+        p += l;
+        p += strspn(p, delimiter);
+        args--;
+    }
+
+    if (args && *p) {
+        char *n = strdup(p);
+        assert(n);
+        dynarray_append(a, n);
+    }
+}
+
+struct tokenizer* tokenizer_new(const char *s, unsigned args) {
+    struct tokenizer *t;
+    
+    t = malloc(sizeof(struct tokenizer));
+    assert(t);
+    t->dynarray = dynarray_new();
+    assert(t->dynarray);
+
+    parse(t->dynarray, s, args);
+    return t;
+}
+
+void tokenizer_free(struct tokenizer *t) {
+    assert(t);
+    dynarray_free(t->dynarray, token_free, NULL);
+    free(t);
+}
+
+const char *tokenizer_get(struct tokenizer *t, unsigned i) {
+    assert(t);
+    return dynarray_get(t->dynarray, i);
+}