diff options
Diffstat (limited to 'polyp/tokenizer.c')
-rw-r--r-- | polyp/tokenizer.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/polyp/tokenizer.c b/polyp/tokenizer.c new file mode 100644 index 00000000..c7f18d26 --- /dev/null +++ b/polyp/tokenizer.c @@ -0,0 +1,89 @@ +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + polypaudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with polypaudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <string.h> +#include <assert.h> +#include <stdlib.h> + +#include "tokenizer.h" +#include "dynarray.h" + +struct pa_tokenizer { + struct pa_dynarray *dynarray; +}; + +static void token_free(void *p, void *userdata) { + free(p); +} + +static void parse(struct pa_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); + pa_dynarray_append(a, n); + p += l; + p += strspn(p, delimiter); + args--; + } + + if (args && *p) { + char *n = strdup(p); + assert(n); + pa_dynarray_append(a, n); + } +} + +struct pa_tokenizer* pa_tokenizer_new(const char *s, unsigned args) { + struct pa_tokenizer *t; + + t = malloc(sizeof(struct pa_tokenizer)); + assert(t); + t->dynarray = pa_dynarray_new(); + assert(t->dynarray); + + parse(t->dynarray, s, args); + return t; +} + +void pa_tokenizer_free(struct pa_tokenizer *t) { + assert(t); + pa_dynarray_free(t->dynarray, token_free, NULL); + free(t); +} + +const char *pa_tokenizer_get(struct pa_tokenizer *t, unsigned i) { + assert(t); + return pa_dynarray_get(t->dynarray, i); +} |