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/*
* Copyright (C) 2002 Marco Pesenti Gritti
*
* 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, 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.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ephy-string.h"
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <glib.h>
#define ELLIPSIS "\xe2\x80\xa6"
/**
* ephy_string_shorten: returns a newly allocated shortened version of str.
* The input must be valid utf-8.
* @str: the string to shorten
* @target_length: the length of the shortened string (in characters)
*
* FIXME: this function is a big mess. While it is utf-8 safe now,
* it can still split a sequence of combining characters
*/
char *
ephy_string_shorten (const char *str, int target_length)
{
char *new_str;
glong actual_length;
gulong bytes;
if (!str) return NULL;
actual_length = g_utf8_strlen (str, -1);
/* if the string is already short enough, or if it's too short for
* us to shorten it, return a new copy */
if (actual_length <= target_length) return g_strdup (str);
/* create string */
bytes = GPOINTER_TO_UINT (g_utf8_offset_to_pointer (str, target_length - 1) - str);
new_str = g_new0 (gchar, bytes + strlen(ELLIPSIS) + 1);
strncpy (new_str, str, bytes);
strncpy (new_str + bytes, ELLIPSIS, strlen (ELLIPSIS));
return new_str;
}
gboolean
ephy_string_to_int (const char *string, gulong *integer)
{
gulong result;
char *parse_end;
/* Check for the case of an empty string. */
if (string == NULL || *string == '\0')
{
return FALSE;
}
/* Call the standard library routine to do the conversion. */
errno = 0;
result = strtol (string, &parse_end, 0);
/* Check that the result is in range. */
if ((result == G_MINLONG || result == G_MAXLONG) && errno == ERANGE)
{
return FALSE;
}
/* Check that all the trailing characters are spaces. */
while (*parse_end != '\0')
{
if (!g_ascii_isspace (*parse_end++))
{
return FALSE;
}
}
/* Return the result. */
*integer = result;
return TRUE;
}
char *
ephy_string_blank_chr (char *source)
{
char *p;
if (source == NULL)
{
return NULL;
}
p = source;
while (*p != '\0')
{
if ((guchar) *p < 0x20)
{
*p = ' ';
}
p++;
}
return source;
}
/* copied from egg-toolbar-editor.c */
char *
ephy_string_elide_underscores (const char *original)
{
char *q, *result;
const char *p;
gboolean last_underscore;
q = result = g_malloc (strlen (original) + 1);
last_underscore = FALSE;
for (p = original; *p; p++)
{
if (!last_underscore && *p == '_')
{
last_underscore = TRUE;
}
else
{
last_underscore = FALSE;
*q++ = *p;
}
}
*q = '\0';
return result;
}
char *
ephy_string_double_underscores (const char *string)
{
int underscores;
const char *p;
char *q;
char *escaped;
if (string == NULL)
{
return NULL;
}
underscores = 0;
for (p = string; *p != '\0'; p++)
{
underscores += (*p == '_');
}
if (underscores == 0)
{
return g_strdup (string);
}
escaped = g_new (char, strlen (string) + underscores + 1);
for (p = string, q = escaped; *p != '\0'; p++, q++)
{
/* Add an extra underscore. */
if (*p == '_') {
*q++ = '_';
}
*q = *p;
}
*q = '\0';
return escaped;
}
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