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// Copyright (C) 2003 Mooffie <mooffie@typo.co.il>
//
// 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, USA.
#include <config.h>
#ifdef HAVE_VASPRINTF
# ifndef _GNU_SOURCE
# define _GNU_SOURCE
# endif
#endif
#include <string.h> // strlen
#include <stdio.h> // vsnprintf, vasprintf
#include <algorithm> // find
#include "types.h"
#include "converters.h" // guess_encoding
#include "utf8.h"
void unistring::init_from_utf8(const char *s, int len)
{
if (!s) {
clear();
} else {
resize(len);
int count = utf8_to_unicode(begin(), s, len);
resize(count);
}
}
void unistring::init_from_utf8(const char *s)
{
if (!s)
clear();
else
init_from_utf8(s, strlen(s));
}
void unistring::init_from_latin1(const char *s)
{
clear();
if (s)
while (*s)
push_back((unsigned char)*s++);
}
// init_from_filename() - filenames are supposed to be encoded in
// UTF-8 nowadays, but this is not guaranteed. This method first
// checks if it looks like UTF-8; if not, it assumes it's a
// latin1 (ISO-8859-1) encoding.
void unistring::init_from_filename(const char *filename)
{
const char *guess = guess_encoding(filename, strlen(filename));
if (guess && STREQ(guess, "UTF-8"))
init_from_utf8(filename);
else
init_from_latin1(filename);
}
int unistring::index(unichar ch) const
{
int idx = std::find(begin(), end(), ch) - begin();
if (idx == len())
idx = -1;
return idx;
}
bool unistring::has_char(unichar ch) const
{
return index(ch) != -1;
}
int unistring::index(const unistring &sub, int from) const
{
if (from >= len())
return -1;
const unichar *pos = std::search(begin() + from, end(),
sub.begin(), sub.end());
if (pos != end())
return pos - begin();
else
return -1;
}
// locale-independent toupper()
unistring unistring::toupper_ascii() const
{
unistring ret = *this;
for (size_type i = 0; i < size(); i++) {
if (ret[i] >= 'a' && ret[i] <= 'z')
ret[i] += 'A' - 'a';
}
return ret;
}
void u8string::init_from_unichars(const unichar *src, int len)
{
char *buf = new char[len * 6 + 1]; // max utf-8 sequence is 6 bytes.
buf[ unicode_to_utf8(buf, src, len) ] = 0;
*this = buf;
delete buf;
}
void u8string::init_from_unichars(const unistring &str)
{
init_from_unichars(str.begin(), str.size());
}
int u8string::index(const char *s, int from) const
{
if (from >= len())
return -1;
const char *pos = std::search(&*(begin() + from), &*end(),
s, s + strlen(s));
if (pos != &*end())
return pos - &*begin();
else
return -1;
}
inline bool is_ascii_ws(char ch)
{
return ch == ' ' || ch == '\t' || ch == '\n';
}
void u8string::inplace_trim()
{
while (size() && is_ascii_ws((*this)[0]))
erase(begin(), begin()+1);
while (size() && is_ascii_ws((*this)[this->size()-1]))
erase(end()-1, end());
}
u8string u8string::trim() const
{
u8string ret = *this;
ret.inplace_trim();
return ret;
}
// locale-independent toupper()
u8string u8string::toupper_ascii() const
{
u8string ret = *this;
for (size_type i = 0; i < size(); i++) {
if (ret[i] >= 'a' && ret[i] <= 'z')
ret[i] += 'A' - 'a';
}
return ret;
}
u8string u8string::erase_char(char xch) const
{
u8string ret;
for (size_type i = 0; i < size(); i++) {
if ((*this)[i] != xch)
ret += (*this)[i];
}
return ret;
}
void u8string::cformat(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vcformat(fmt, ap);
va_end(ap);
}
void u8string::vcformat(const char *fmt, va_list ap)
{
#ifdef HAVE_VASPRINTF
char *buf;
int result = vasprintf(&buf, fmt, ap);
if (result != -1 && buf) {
*this = buf;
free(buf);
} else {
clear();
}
#else
# define MAX_MSG_LEN 4096
char buf[MAX_MSG_LEN+1];
buf[MAX_MSG_LEN] = 0;
# ifdef HAVE_VSNPRINTF
vsnprintf(buf, MAX_MSG_LEN, fmt, ap);
# else
vsprintf(buf, fmt, ap);
# endif
*this = buf;
# undef MAX_MSG_LEN
#endif
}
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