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synced 2025-11-05 13:29:57 -05:00
Reorganised the source tree. We now have src/ with a couple of subdirs:
* daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f
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parent
5b881e6228
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246 changed files with 724 additions and 689 deletions
166
polyp/strbuf.c
166
polyp/strbuf.c
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/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <sys/types.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <xmalloc.h>
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#include "strbuf.h"
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/* A chunk of the linked list that makes up the string */
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struct chunk {
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struct chunk *next;
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size_t length;
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};
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#define CHUNK_TO_TEXT(c) ((char*) (c) + sizeof(struct chunk))
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struct pa_strbuf {
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size_t length;
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struct chunk *head, *tail;
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};
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pa_strbuf *pa_strbuf_new(void) {
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pa_strbuf *sb = pa_xmalloc(sizeof(pa_strbuf));
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sb->length = 0;
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sb->head = sb->tail = NULL;
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return sb;
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}
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void pa_strbuf_free(pa_strbuf *sb) {
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assert(sb);
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while (sb->head) {
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struct chunk *c = sb->head;
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sb->head = sb->head->next;
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pa_xfree(c);
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}
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pa_xfree(sb);
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}
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/* Make a C string from the string buffer. The caller has to free
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* string with pa_xfree(). */
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char *pa_strbuf_tostring(pa_strbuf *sb) {
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char *t, *e;
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struct chunk *c;
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assert(sb);
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e = t = pa_xmalloc(sb->length+1);
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for (c = sb->head; c; c = c->next) {
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assert((size_t) (e-t) <= sb->length);
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memcpy(e, CHUNK_TO_TEXT(c), c->length);
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e += c->length;
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}
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/* Trailing NUL */
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*e = 0;
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assert(e == t+sb->length);
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return t;
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}
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/* Combination of pa_strbuf_free() and pa_strbuf_tostring() */
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char *pa_strbuf_tostring_free(pa_strbuf *sb) {
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char *t;
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assert(sb);
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t = pa_strbuf_tostring(sb);
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pa_strbuf_free(sb);
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return t;
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}
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/* Append a string to the string buffer */
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void pa_strbuf_puts(pa_strbuf *sb, const char *t) {
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assert(sb && t);
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pa_strbuf_putsn(sb, t, strlen(t));
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}
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/* Append a new chunk to the linked list */
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static void append(pa_strbuf *sb, struct chunk *c) {
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assert(sb && c);
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if (sb->tail) {
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assert(sb->head);
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sb->tail->next = c;
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} else {
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assert(!sb->head);
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sb->head = c;
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}
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sb->tail = c;
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sb->length += c->length;
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c->next = NULL;
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}
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/* Append up to l bytes of a string to the string buffer */
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void pa_strbuf_putsn(pa_strbuf *sb, const char *t, size_t l) {
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struct chunk *c;
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assert(sb && t);
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if (!l)
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return;
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c = pa_xmalloc(sizeof(struct chunk)+l);
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c->length = l;
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memcpy(CHUNK_TO_TEXT(c), t, l);
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append(sb, c);
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}
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/* Append a printf() style formatted string to the string buffer. */
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/* The following is based on an example from the GNU libc documentation */
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int pa_strbuf_printf(pa_strbuf *sb, const char *format, ...) {
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int size = 100;
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struct chunk *c = NULL;
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assert(sb);
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for(;;) {
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va_list ap;
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int r;
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c = pa_xrealloc(c, sizeof(struct chunk)+size);
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va_start(ap, format);
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r = vsnprintf(CHUNK_TO_TEXT(c), size, format, ap);
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va_end(ap);
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if (r > -1 && r < size) {
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c->length = r;
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append(sb, c);
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return r;
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}
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if (r > -1) /* glibc 2.1 */
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size = r+1;
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else /* glibc 2.0 */
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size *= 2;
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}
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}
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