+++ /dev/null
-/* $Id$ */
-
-/***
- This file is part of polypaudio.
-
- polypaudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser 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 Lesser 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 <sys/types.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <string.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <xmalloc.h>
-
-#include "strbuf.h"
-
-/* A chunk of the linked list that makes up the string */
-struct chunk {
- struct chunk *next;
- size_t length;
-};
-
-#define CHUNK_TO_TEXT(c) ((char*) (c) + sizeof(struct chunk))
-
-struct pa_strbuf {
- size_t length;
- struct chunk *head, *tail;
-};
-
-pa_strbuf *pa_strbuf_new(void) {
- pa_strbuf *sb = pa_xmalloc(sizeof(pa_strbuf));
- sb->length = 0;
- sb->head = sb->tail = NULL;
- return sb;
-}
-
-void pa_strbuf_free(pa_strbuf *sb) {
- assert(sb);
- while (sb->head) {
- struct chunk *c = sb->head;
- sb->head = sb->head->next;
- pa_xfree(c);
- }
-
- pa_xfree(sb);
-}
-
-/* Make a C string from the string buffer. The caller has to free
- * string with pa_xfree(). */
-char *pa_strbuf_tostring(pa_strbuf *sb) {
- char *t, *e;
- struct chunk *c;
- assert(sb);
-
- e = t = pa_xmalloc(sb->length+1);
-
- for (c = sb->head; c; c = c->next) {
- assert((size_t) (e-t) <= sb->length);
- memcpy(e, CHUNK_TO_TEXT(c), c->length);
- e += c->length;
- }
-
- /* Trailing NUL */
- *e = 0;
-
- assert(e == t+sb->length);
-
- return t;
-}
-
-/* Combination of pa_strbuf_free() and pa_strbuf_tostring() */
-char *pa_strbuf_tostring_free(pa_strbuf *sb) {
- char *t;
- assert(sb);
- t = pa_strbuf_tostring(sb);
- pa_strbuf_free(sb);
- return t;
-}
-
-/* Append a string to the string buffer */
-void pa_strbuf_puts(pa_strbuf *sb, const char *t) {
- assert(sb && t);
- pa_strbuf_putsn(sb, t, strlen(t));
-}
-
-/* Append a new chunk to the linked list */
-static void append(pa_strbuf *sb, struct chunk *c) {
- assert(sb && c);
-
- if (sb->tail) {
- assert(sb->head);
- sb->tail->next = c;
- } else {
- assert(!sb->head);
- sb->head = c;
- }
-
- sb->tail = c;
- sb->length += c->length;
- c->next = NULL;
-}
-
-/* Append up to l bytes of a string to the string buffer */
-void pa_strbuf_putsn(pa_strbuf *sb, const char *t, size_t l) {
- struct chunk *c;
- assert(sb && t);
-
- if (!l)
- return;
-
- c = pa_xmalloc(sizeof(struct chunk)+l);
- c->length = l;
- memcpy(CHUNK_TO_TEXT(c), t, l);
-
- append(sb, c);
-}
-
-/* Append a printf() style formatted string to the string buffer. */
-/* The following is based on an example from the GNU libc documentation */
-int pa_strbuf_printf(pa_strbuf *sb, const char *format, ...) {
- int size = 100;
- struct chunk *c = NULL;
-
- assert(sb);
-
- for(;;) {
- va_list ap;
- int r;
-
- c = pa_xrealloc(c, sizeof(struct chunk)+size);
-
- va_start(ap, format);
- r = vsnprintf(CHUNK_TO_TEXT(c), size, format, ap);
- va_end(ap);
-
- if (r > -1 && r < size) {
- c->length = r;
- append(sb, c);
- return r;
- }
-
- if (r > -1) /* glibc 2.1 */
- size = r+1;
- else /* glibc 2.0 */
- size *= 2;
- }
-}