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/*
* @file util.h Utility Functions
* @ingroup core
*
* Gaim is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "platform.h"
#include "util.h"
#include "gnunet_util.h"
/* Returns a NULL-terminated string after unescaping an entity
* (eg. &, < & etc.) starting at s. Returns NULL on failure.*/
static char *
detect_entity (const char *text, int *length)
{
const char *pln;
int len;
int pound;
char b[7];
char *buf;
if (!text || *text != '&')
return NULL;
#define IS_ENTITY(s) (!strncasecmp(text, s, (len = sizeof(s) - 1)))
if (IS_ENTITY ("&"))
pln = "&";
else if (IS_ENTITY ("<"))
pln = "<";
else if (IS_ENTITY (">"))
pln = ">";
else if (IS_ENTITY (" "))
pln = " ";
else if (IS_ENTITY ("©"))
pln = "\302\251"; /* or use g_unichar_to_utf8(0xa9); */
else if (IS_ENTITY ("""))
pln = "\"";
else if (IS_ENTITY ("®"))
pln = "\302\256"; /* or use g_unichar_to_utf8(0xae); */
else if (IS_ENTITY ("'"))
pln = "\'";
else if (*(text + 1) == '#' && (sscanf (text, "&#%u;", £) == 1) &&
pound != 0 && *(text + 3 + (int) log10 (pound)) == ';')
{
buf = GNUNET_convert_string_to_utf8 (NULL,
(const char *) £,
2, "UNICODE");
if (strlen (buf) > 6)
buf[6] = '\0';
strcpy (b, buf);
pln = b;
GNUNET_free (buf);
len = 2;
while (isdigit ((int) text[len]))
len++;
if (text[len] == ';')
len++;
}
else
return NULL;
if (length)
*length = len;
return GNUNET_strdup (pln);
}
char *
g_strdup_printf (const char *fmt, ...)
{
size_t size;
char *buf;
va_list va;
va_start (va, fmt);
size = VSNPRINTF (NULL, 0, fmt, va) + 1;
va_end (va);
buf = GNUNET_malloc (size);
va_start (va, fmt);
VSNPRINTF (buf, size, fmt, va);
va_end (va);
return buf;
}
char *
gaim_unescape_html (const char *html)
{
if (html != NULL)
{
const char *c = html;
char *ret = GNUNET_strdup ("");
char *app;
while (*c)
{
int len;
char *ent;
if ((ent = detect_entity (c, &len)) != NULL)
{
app = g_strdup_printf ("%s%s", ret, ent);
GNUNET_free (ret);
ret = app;
c += len;
GNUNET_free (ent);
}
else if (!strncmp (c, "<br>", 4))
{
app = g_strdup_printf ("%s%s", ret, "\n");
GNUNET_free (ret);
ret = app;
c += 4;
}
else
{
app = g_strdup_printf ("%s%c", ret, *c);
GNUNET_free (ret);
ret = app;
c++;
}
}
return ret;
}
return NULL;
}
int
gaim_str_has_prefix (const char *s, const char *p)
{
if ((s == NULL) || (p == NULL))
return 0;
return !strncmp (s, p, strlen (p));
}
/* end of util.c */
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