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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef TEXT_H
#define TEXT_H
#include <string.h>
typedef struct
{
goffset offset;
gsize frame_len;
gsize len;
gchar *body;
} Text;
inline Text*
string_new(const gchar *src)
{
if (!src)
return NULL;
gsize len = strlen(src);
Text *out = (Text*)g_malloc(sizeof(Text) + len + 1);
gchar *body = (gchar*)out + sizeof(Text);
out->offset = 0;
out->frame_len = len;
out->len = len;
out->body = body;
memcpy(body, src, len + 1);
GST_DEBUG("[%p] len=%ld", out, len);
return out;
}
inline void
string_chunk(Text *src, Text *dst, gsize len)
{
memcpy(dst, src, sizeof(Text));
gsize dst_len = MIN(len, src->frame_len);
gchar *dst_last = dst->body + dst->offset + dst_len;
gchar *i;
if (dst_len < src->frame_len)
for (i = dst_last; dst_len; --dst_len, --i)
if (g_ascii_isspace(*i))
break;
if (dst_len)
dst->frame_len = dst_len;
else
{
dst_last = g_utf8_prev_char(dst_last + 1);
dst->frame_len = dst_last - (dst->body + dst->offset);
}
src->offset += dst->frame_len;
src->frame_len -= dst->frame_len;
GST_DEBUG("[%p] len=%ld dst_len=%ld dst_last=%ld", src, len, dst_len,
dst_last-dst->body);
}
inline gboolean
string_nil(Text *str)
{
return str->frame_len == 0;
}
inline void
string_unref(Text *str)
{
if (string_nil(str))
return;
gpointer data = NULL;
if (str->offset + str->frame_len >= str->len)
data = str->body - sizeof(Text);
memset(str, 0, sizeof(Text));
GST_DEBUG("[%p]", data);
g_free(data);
}
#endif
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