X-Git-Url: https://code.delx.au/pulseaudio/blobdiff_plain/f44ba092651aa75055e109e04b4164ea92ae7fdc..ecf09f2cd6bf2f46b0d2402c700ab618c090bd4c:/src/pulsecore/strbuf.c

diff --git a/src/pulsecore/strbuf.c b/src/pulsecore/strbuf.c
index ef8160dc..f131d5cd 100644
--- a/src/pulsecore/strbuf.c
+++ b/src/pulsecore/strbuf.c
@@ -1,18 +1,18 @@
-/* $Id$ */
-
 /***
   This file is part of PulseAudio.
- 
+
+  Copyright 2004-2006 Lennart Poettering
+
   PulseAudio 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,
+  by the Free Software Foundation; either version 2.1 of the License,
   or (at your option) any later version.
- 
+
   PulseAudio 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 PulseAudio; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
@@ -25,12 +25,12 @@
 
 #include <sys/types.h>
 #include <stdlib.h>
-#include <assert.h>
 #include <string.h>
 #include <stdarg.h>
 #include <stdio.h>
 
 #include <pulse/xmalloc.h>
+#include <pulsecore/macro.h>
 
 #include "strbuf.h"
 
@@ -40,7 +40,7 @@ struct chunk {
     size_t length;
 };
 
-#define CHUNK_TO_TEXT(c) ((char*) (c) + sizeof(struct chunk))
+#define CHUNK_TO_TEXT(c) ((char*) (c) + PA_ALIGN(sizeof(struct chunk)))
 
 struct pa_strbuf {
     size_t length;
@@ -48,14 +48,18 @@ struct pa_strbuf {
 };
 
 pa_strbuf *pa_strbuf_new(void) {
-    pa_strbuf *sb = pa_xmalloc(sizeof(pa_strbuf));
+    pa_strbuf *sb;
+
+    sb = pa_xnew(pa_strbuf, 1);
     sb->length = 0;
     sb->head = sb->tail = NULL;
+
     return sb;
 }
 
 void pa_strbuf_free(pa_strbuf *sb) {
-    assert(sb);
+    pa_assert(sb);
+
     while (sb->head) {
         struct chunk *c = sb->head;
         sb->head = sb->head->next;
@@ -70,12 +74,13 @@ void pa_strbuf_free(pa_strbuf *sb) {
 char *pa_strbuf_tostring(pa_strbuf *sb) {
     char *t, *e;
     struct chunk *c;
-    assert(sb);
+
+    pa_assert(sb);
 
     e = t = pa_xmalloc(sb->length+1);
 
     for (c = sb->head; c; c = c->next) {
-        assert((size_t) (e-t) <= sb->length);
+        pa_assert((size_t) (e-t) <= sb->length);
         memcpy(e, CHUNK_TO_TEXT(c), c->length);
         e += c->length;
     }
@@ -83,35 +88,48 @@ char *pa_strbuf_tostring(pa_strbuf *sb) {
     /* Trailing NUL */
     *e = 0;
 
-    assert(e == t+sb->length);
-    
+    pa_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);
+
+    pa_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_assert(sb);
+    pa_assert(t);
+
     pa_strbuf_putsn(sb, t, strlen(t));
 }
 
+/* Append a character to the string buffer */
+void pa_strbuf_putc(pa_strbuf *sb, char c) {
+    pa_assert(sb);
+
+    pa_strbuf_putsn(sb, &c, 1);
+}
+
 /* Append a new chunk to the linked list */
 static void append(pa_strbuf *sb, struct chunk *c) {
-    assert(sb && c);
+    pa_assert(sb);
+    pa_assert(c);
 
     if (sb->tail) {
-        assert(sb->head);
+        pa_assert(sb->head);
         sb->tail->next = c;
     } else {
-        assert(!sb->head);
+        pa_assert(!sb->head);
         sb->head = c;
     }
 
@@ -123,12 +141,14 @@ static void append(pa_strbuf *sb, struct chunk *c) {
 /* 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);
-    
+
+    pa_assert(sb);
+    pa_assert(t);
+
     if (!l)
-       return;
-   
-    c = pa_xmalloc(sizeof(struct chunk)+l);
+        return;
+
+    c = pa_xmalloc(PA_ALIGN(sizeof(struct chunk)) + l);
     c->length = l;
     memcpy(CHUNK_TO_TEXT(c), t, l);
 
@@ -137,31 +157,39 @@ void pa_strbuf_putsn(pa_strbuf *sb, const char *t, size_t l) {
 
 /* 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;
+size_t pa_strbuf_printf(pa_strbuf *sb, const char *format, ...) {
+    size_t size = 100;
     struct chunk *c = NULL;
 
-    assert(sb);
-    
+    pa_assert(sb);
+    pa_assert(format);
+
     for(;;) {
         va_list ap;
         int r;
 
-        c = pa_xrealloc(c, sizeof(struct chunk)+size);
+        c = pa_xrealloc(c, PA_ALIGN(sizeof(struct chunk)) + size);
 
         va_start(ap, format);
         r = vsnprintf(CHUNK_TO_TEXT(c), size, format, ap);
+        CHUNK_TO_TEXT(c)[size-1] = 0;
         va_end(ap);
-        
-        if (r > -1 && r < size) {
-            c->length = r;
+
+        if (r > -1 && (size_t) r < size) {
+            c->length = (size_t) r;
             append(sb, c);
-            return r;
+            return (size_t) r;
         }
 
         if (r > -1)    /* glibc 2.1 */
-            size = r+1; 
+            size = (size_t) r+1;
         else           /* glibc 2.0 */
             size *= 2;
     }
 }
+
+pa_bool_t pa_strbuf_isempty(pa_strbuf *sb) {
+    pa_assert(sb);
+
+    return sb->length <= 0;
+}