Version 5.10.0

[yaz-moved-to-github.git] / src / wrbuf.c

diff --git a/src/wrbuf.c b/src/wrbuf.c
index 871028d..6d9b145 100644 (file)
--- a/src/wrbuf.c
+++ b/src/wrbuf.c
@@ -1,5 +1,5 @@
 /* This file is part of the YAZ toolkit.
- * Copyright (C) 1995-2013 Index Data
+ * Copyright (C) Index Data
  * See the file LICENSE for details.
  */
 
@@ -16,6 +16,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
+#include <assert.h>
 
 #include <yaz/wrbuf.h>
 #include <yaz/snprintf.h>
@@ -30,6 +31,7 @@ WRBUF wrbuf_alloc(void)
     n->buf = 0;
     n->size = 0;
     n->pos = 0;
+    wrbuf_grow(n, 1);
     return n;
 }
 
@@ -57,9 +59,8 @@ int wrbuf_grow(WRBUF b, size_t minsize)
         togrow = b->size;
     if (togrow < minsize)
         togrow = minsize;
-    if (b->size && !(b->buf =(char *)xrealloc(b->buf, b->size += togrow)))
-        abort();
-    else if (!b->size && !(b->buf = (char *)xmalloc(b->size = togrow)))
+    b->buf = (char *) xrealloc(b->buf, 1 + (b->size += togrow));
+    if (!b->buf)
         abort();
     return 0;
 }
@@ -169,8 +170,9 @@ void wrbuf_printf(WRBUF b, const char *fmt, ...)
     va_end(ap);
 }
 
-int wrbuf_iconv_write_x(WRBUF b, yaz_iconv_t cd, const char *buf,
-                        size_t size, int cdata)
+int wrbuf_iconv_write2(WRBUF b, yaz_iconv_t cd, const char *buf,
+                       size_t size,
+                       void (*wfunc)(WRBUF, const char *, size_t))
 {
     int ret = 0;
     if (cd)
@@ -193,40 +195,24 @@ int wrbuf_iconv_write_x(WRBUF b, yaz_iconv_t cd, const char *buf,
                     break;
                 }
             }
-            switch (cdata)
-            {
-            case 0:
-                wrbuf_write(b, outbuf, outp - outbuf);
-                break;
-            case 1:
-                wrbuf_xmlputs_n(b, outbuf, outp - outbuf);
-                break;
-            case 2:
-                wrbuf_json_write(b, outbuf, outp - outbuf);
-                break;
-            }
+            (*wfunc)(b, outbuf, outp - outbuf);
         }
     }
     else
-    {
-        switch (cdata)
-        {
-        case 0:
-            wrbuf_write(b, buf, size);
-            break;
-        case 1:
-            wrbuf_xmlputs_n(b, buf, size);
-            break;
-        case 2:
-            wrbuf_json_write(b, buf, size);
-        }
-    }
+        (*wfunc)(b, buf, size);
     return ret;
 }
 
+int wrbuf_iconv_write_x(WRBUF b, yaz_iconv_t cd, const char *buf,
+                        size_t size, int cdata)
+{
+    return wrbuf_iconv_write2(b, cd, buf, size,
+                              cdata ? wrbuf_xmlputs_n : wrbuf_write);
+}
+
 void wrbuf_iconv_write(WRBUF b, yaz_iconv_t cd, const char *buf, size_t size)
 {
-    wrbuf_iconv_write_x(b, cd, buf, size, 0);
+    wrbuf_iconv_write2(b, cd, buf, size, wrbuf_write);
 }
 
 void wrbuf_iconv_puts(WRBUF b, yaz_iconv_t cd, const char *strz)
@@ -243,23 +229,23 @@ void wrbuf_iconv_putchar(WRBUF b, yaz_iconv_t cd, int ch)
 
 void wrbuf_iconv_write_cdata(WRBUF b, yaz_iconv_t cd, const char *buf, size_t size)
 {
-    wrbuf_iconv_write_x(b, cd, buf, size, 1);
+    wrbuf_iconv_write2(b, cd, buf, size, wrbuf_xmlputs_n);
 }
 
 void wrbuf_iconv_puts_cdata(WRBUF b, yaz_iconv_t cd, const char *strz)
 {
-    wrbuf_iconv_write_x(b, cd, strz, strlen(strz), 1);
+    wrbuf_iconv_write2(b, cd, strz, strlen(strz), wrbuf_xmlputs_n);
 }
 
 void wrbuf_iconv_json_write(WRBUF b, yaz_iconv_t cd,
                             const char *buf, size_t size)
 {
-    wrbuf_iconv_write_x(b, cd, buf, size, 2);
+    wrbuf_iconv_write2(b, cd, buf, size, wrbuf_json_write);
 }
 
 void wrbuf_iconv_json_puts(WRBUF b, yaz_iconv_t cd, const char *strz)
 {
-    wrbuf_iconv_write_x(b, cd, strz, strlen(strz), 2);
+    wrbuf_iconv_write2(b, cd, strz, strlen(strz), wrbuf_json_write);
 }
 
 void wrbuf_iconv_reset(WRBUF b, yaz_iconv_t cd)
@@ -277,8 +263,17 @@ void wrbuf_iconv_reset(WRBUF b, yaz_iconv_t cd)
 
 const char *wrbuf_cstr(WRBUF b)
 {
-    wrbuf_putc(b, '\0');   /* add '\0' */
-    (b->pos)--;           /* don't include '\0' in count */
+    assert(b && b->pos <= b->size);
+    b->buf[b->pos] = '\0';
+    return b->buf;
+}
+
+const char *wrbuf_cstr_null(WRBUF b)
+{
+    if (!b || b->pos == 0)
+        return 0;
+    assert(b->pos <= b->size);
+    b->buf[b->pos] = '\0';
     return b->buf;
 }