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/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* a 4 byte aligned and zero padded string allows faster string operations. */
#pragma once
#include "Hash.h"
#include <stdio.h>
#include <limits.h>
void str4cpy(int32* dst, const char* src);
void mem4cpy(int32* dst, const char* src, int charlen);
// returns the number of pad bytes to add to a string of a given length
inline int str4padbytes(int charlen) { return 4 - (charlen & 3); }
// converts length in bytes to length in words
inline int str4len(int charlen) { return (charlen + 4) >> 2; }
// returns length in words of a char *
inline int str4len(const char* src) {
const char* src0 = src;
while (*src) {
src++;
}
return str4len(src - src0);
}
// returns length in words of a int32 *
inline int str4len(const int32* src) {
const int32* src0 = src;
while (*src++ & kLASTCHAR) {
}
int wordlen = src - src0;
return wordlen;
}
// returns length in words of a int32 *
inline bool str4eq(const int32* a, const int32* b) {
while (true) {
if (*a != *b)
return false;
if ((*a & kLASTCHAR) == 0)
return true;
a++;
b++;
}
}
// copy an int32 *
inline void str4cpy(int32* dst, const int32* src) {
int32 c;
do {
*dst++ = c = *src++;
} while (c & kLASTCHAR);
}
inline int sc_atoi(const char* string) {
int value = 0;
if (*string == 0)
return -1;
uint32 c;
while ((c = *string++ - '0') <= 9) {
value = value * 10 + c;
}
return value;
}
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