2 * Copyright (c) 1995-2004, Index Data.
3 * See the file LICENSE for details.
5 * $Id: wrbuf.c,v 1.3 2004-03-15 21:39:06 adam Exp $
9 * Growing buffer for writing various stuff.
21 #include <yaz/wrbuf.h>
22 #include <yaz/yaz-iconv.h>
24 WRBUF wrbuf_alloc(void)
28 if (!(n = (WRBUF)xmalloc(sizeof(*n))))
36 void wrbuf_free(WRBUF b, int free_buf)
38 if (free_buf && b->buf)
43 void wrbuf_rewind(WRBUF b)
48 int wrbuf_grow(WRBUF b, int minsize)
58 if (b->size && !(b->buf =(char *)xrealloc(b->buf, b->size += togrow)))
60 else if (!b->size && !(b->buf = (char *)xmalloc(b->size = togrow)))
65 int wrbuf_write(WRBUF b, const char *buf, int size)
69 if (b->pos + size >= b->size)
71 memcpy(b->buf + b->pos, buf, size);
76 int wrbuf_puts(WRBUF b, const char *buf)
78 wrbuf_write(b, buf, strlen(buf)+1); /* '\0'-terminate as well */
79 (b->pos)--; /* don't include '\0' in count */
83 int wrbuf_xmlputs(WRBUF b, const char *cp)
85 return wrbuf_write_cdata(b, cp, strlen(cp));
88 int wrbuf_write_cdata(WRBUF b, const char *cp, int size)
95 wrbuf_puts(b, "<");
98 wrbuf_puts(b, ">");
101 wrbuf_puts(b, "&");
104 wrbuf_puts(b, """);
107 wrbuf_puts(b, "'");
119 void wrbuf_printf(WRBUF b, const char *fmt, ...)
126 _vsnprintf(buf, sizeof(buf)-1, fmt, ap);
130 vsnprintf(buf, sizeof(buf)-1, fmt, ap);
132 vsprintf(buf, fmt, ap);
140 static int wrbuf_iconv_write_x(WRBUF b, yaz_iconv_t cd, const char *buf,
146 size_t inbytesleft = size;
147 const char *inp = buf;
150 size_t outbytesleft = sizeof(outbuf);
152 size_t r = yaz_iconv(cd, (char**) &inp, &inbytesleft,
153 &outp, &outbytesleft);
154 if (r == (size_t) (-1))
156 int e = yaz_iconv_error(cd);
157 if (e != YAZ_ICONV_E2BIG)
161 wrbuf_write_cdata(b, outbuf, outp - outbuf);
163 wrbuf_write(b, outbuf, outp - outbuf);
169 wrbuf_write_cdata(b, buf, size);
171 wrbuf_write(b, buf, size);
176 int wrbuf_iconv_write(WRBUF b, yaz_iconv_t cd, const char *buf, int size)
178 return wrbuf_iconv_write_x(b, cd, buf, size, 0);
181 int wrbuf_iconv_write_cdata(WRBUF b, yaz_iconv_t cd, const char *buf, int size)
183 return wrbuf_iconv_write_x(b, cd, buf, size, 1);