2 * Copyright (C) 1995-2007, Index Data ApS
3 * See the file LICENSE for details.
5 * $Id: wrbuf.c,v 1.21 2007-10-15 12:00:31 adam Exp $
10 * \brief Implements WRBUF (growing buffer)
22 #include <yaz/wrbuf.h>
23 #include <yaz/snprintf.h>
24 #include <yaz/yaz-iconv.h>
26 WRBUF wrbuf_alloc(void)
30 if (!(n = (WRBUF)xmalloc(sizeof(*n))))
38 void wrbuf_destroy(WRBUF b)
44 void wrbuf_rewind(WRBUF b)
49 int wrbuf_grow(WRBUF b, int minsize)
59 if (b->size && !(b->buf =(char *)xrealloc(b->buf, b->size += togrow)))
61 else if (!b->size && !(b->buf = (char *)xmalloc(b->size = togrow)))
66 int wrbuf_write(WRBUF b, const char *buf, int size)
70 if (b->pos + size >= b->size)
72 memcpy(b->buf + b->pos, buf, size);
77 int wrbuf_puts(WRBUF b, const char *buf)
79 wrbuf_write(b, buf, strlen(buf));
83 int wrbuf_puts_replace_char(WRBUF b, const char *buf,
84 const char from, const char to)
97 void wrbuf_chop_right(WRBUF b)
99 while (b->pos && b->buf[b->pos-1] == ' ')
105 int wrbuf_xmlputs(WRBUF b, const char *cp)
107 return wrbuf_xmlputs_n(b, cp, strlen(cp));
110 int wrbuf_xmlputs_n(WRBUF b, const char *cp, int size)
114 /* only TAB,CR,LF of ASCII CTRL are allowed in XML 1.0! */
115 if (*cp >= 0 && *cp <= 31)
116 if (*cp != 9 && *cp != 10 && *cp != 13)
118 cp++; /* we silently ignore (delete) these.. */
124 wrbuf_puts(b, "<");
127 wrbuf_puts(b, ">");
130 wrbuf_puts(b, "&");
133 wrbuf_puts(b, """);
136 wrbuf_puts(b, "'");
146 void wrbuf_printf(WRBUF b, const char *fmt, ...)
152 yaz_vsnprintf(buf, sizeof(buf)-1, fmt, ap);
158 static int wrbuf_iconv_write_x(WRBUF b, yaz_iconv_t cd, const char *buf,
164 size_t inbytesleft = size;
165 const char *inp = buf;
168 size_t outbytesleft = sizeof(outbuf);
170 size_t r = yaz_iconv(cd, (char**) &inp, &inbytesleft,
171 &outp, &outbytesleft);
172 if (r == (size_t) (-1))
174 int e = yaz_iconv_error(cd);
175 if (e != YAZ_ICONV_E2BIG)
179 wrbuf_xmlputs_n(b, outbuf, outp - outbuf);
181 wrbuf_write(b, outbuf, outp - outbuf);
187 wrbuf_xmlputs_n(b, buf, size);
189 wrbuf_write(b, buf, size);
194 int wrbuf_iconv_write(WRBUF b, yaz_iconv_t cd, const char *buf, int size)
196 return wrbuf_iconv_write_x(b, cd, buf, size, 0);
199 int wrbuf_iconv_puts(WRBUF b, yaz_iconv_t cd, const char *strz)
201 return wrbuf_iconv_write(b, cd, strz, strlen(strz));
204 int wrbuf_iconv_putchar(WRBUF b, yaz_iconv_t cd, int ch)
208 return wrbuf_iconv_write(b, cd, buf, 1);
211 int wrbuf_iconv_write_cdata(WRBUF b, yaz_iconv_t cd, const char *buf, int size)
213 return wrbuf_iconv_write_x(b, cd, buf, size, 1);
216 void wrbuf_iconv_reset(WRBUF b, yaz_iconv_t cd)
221 size_t outbytesleft = sizeof(outbuf);
223 size_t r = yaz_iconv(cd, 0, 0, &outp, &outbytesleft);
224 if (r != (size_t) (-1))
225 wrbuf_write(b, outbuf, outp - outbuf);
229 const char *wrbuf_cstr(WRBUF b)
231 wrbuf_putc(b, '\0'); /* add '\0' */
232 (b->pos)--; /* don't include '\0' in count */
236 void wrbuf_cut_right(WRBUF b, size_t no_to_remove)
238 if (no_to_remove > b->pos)
239 no_to_remove = b->pos;
240 b->pos = b->pos - no_to_remove;
243 void wrbuf_verbose_str(WRBUF b, const char *str, size_t len)
246 for (i = 0; i < len; i++)
247 if (str[i] < ' ' || str[i] > 126)
248 wrbuf_printf(b, "\\x%02X", str[i] & 0xff);
250 wrbuf_putc(b, str[i]);
256 * indent-tabs-mode: nil
258 * vim: shiftwidth=4 tabstop=8 expandtab