/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2016 Olaf Wintermann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "utils.h"
#include <math.h>
#include <stdio.h>
#include <limits.h>
#include <errno.h>
/* COPY FUCNTIONS */
void* ucx_strcpy(void* s, void* data) {
char *str = (char*) s;
size_t n = 1+strlen(str);
char *cpy = (char*) malloc(n);
memcpy(cpy, str, n);
return cpy;
}
void* ucx_memcpy(void* m, void* n) {
size_t k = *((size_t*)n);
void *cpy = malloc(k);
memcpy(cpy, m, k);
return cpy;
}
size_t ucx_stream_bncopy(void *src, void *dest, read_func readfnc,
write_func writefnc, char* buf, size_t bufsize, size_t n) {
if(n == 0 || bufsize == 0) {
return 0;
}
char *lbuf;
size_t ncp = 0;
if(buf) {
lbuf = buf;
} else {
lbuf = (char*)malloc(bufsize);
if(lbuf == NULL) {
return 0;
}
}
size_t r;
size_t rn = bufsize > n ? n : bufsize;
while((r = readfnc(lbuf, 1, rn, src)) != 0) {
r = writefnc(lbuf, 1, r, dest);
ncp += r;
n -= r;
rn = bufsize > n ? n : bufsize;
if(r == 0 || n == 0) {
break;
}
}
if (lbuf != buf) {
free(lbuf);
}
return ncp;
}
/* COMPARE FUNCTIONS */
int ucx_strcmp(void *s1, void *s2, void *data) {
return strcmp((char*)s1, (char*)s2);
}
int ucx_strncmp(void *s1, void *s2, void *n) {
return strncmp((char*)s1, (char*)s2, *((size_t*) n));
}
int ucx_intcmp(void *i1, void *i2, void *data) {
int a = *((int*) i1);
int b = *((int*) i2);
if (a == b) {
return 0;
} else {
return a < b ? -1 : 1;
}
}
int ucx_floatcmp(void *f1, void *f2, void *epsilon) {
float a = *((float*) f1);
float b = *((float*) f2);
float e = !epsilon ? 1e-6f : *((float*)epsilon);
if (fabsf(a - b) < e) {
return 0;
} else {
return a < b ? -1 : 1;
}
}
int ucx_doublecmp(void *d1, void *d2, void *epsilon) {
double a = *((float*) d1);
double b = *((float*) d2);
double e = !epsilon ? 1e-14 : *((double*)epsilon);
if (fabs(a - b) < e) {
return 0;
} else {
return a < b ? -1 : 1;
}
}
int ucx_ptrcmp(void *ptr1, void *ptr2, void *data) {
intptr_t p1 = (intptr_t) ptr1;
intptr_t p2 = (intptr_t) ptr2;
if (p1 == p2) {
return 0;
} else {
return p1 < p2 ? -1 : 1;
}
}
int ucx_memcmp(void *ptr1, void *ptr2, void *n) {
return memcmp(ptr1, ptr2, *((size_t*)n));
}
/* PRINTF FUNCTIONS */
#ifdef va_copy
#define UCX_PRINTF_BUFSIZE 256
#else
#pragma message("WARNING: C99 va_copy macro not supported by this platform" \
" - limiting ucx_*printf to 2 KiB")
#define UCX_PRINTF_BUFSIZE 0x800
#endif
int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) {
int ret;
va_list ap;
va_start(ap, fmt);
ret = ucx_vfprintf(stream, wfc, fmt, ap);
va_end(ap);
return ret;
}
int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) {
char buf[UCX_PRINTF_BUFSIZE];
#ifdef va_copy
va_list ap2;
va_copy(ap2, ap);
int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
if (ret < 0) {
return ret;
} else if (ret < UCX_PRINTF_BUFSIZE) {
return (int)wfc(buf, 1, ret, stream);
} else {
if (ret == INT_MAX) {
errno = ENOMEM;
return -1;
}
int len = ret + 1;
char *newbuf = (char*)malloc(len);
if (!newbuf) {
return -1;
}
ret = vsnprintf(newbuf, len, fmt, ap2);
if (ret > 0) {
ret = (int)wfc(newbuf, 1, ret, stream);
}
free(newbuf);
}
return ret;
#else
int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
if (ret < 0) {
return ret;
} else if (ret < UCX_PRINTF_BUFSIZE) {
return (int)wfc(buf, 1, ret, stream);
} else {
errno = ENOMEM;
return -1;
}
#endif
}
sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) {
va_list ap;
sstr_t ret;
va_start(ap, fmt);
ret = ucx_vasprintf(allocator, fmt, ap);
va_end(ap);
return ret;
}
sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) {
sstr_t s;
s.ptr = NULL;
s.length = 0;
char buf[UCX_PRINTF_BUFSIZE];
#ifdef va_copy
va_list ap2;
va_copy(ap2, ap);
int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
s.ptr = (char*)almalloc(a, ret + 1);
if (s.ptr) {
s.length = (size_t)ret;
memcpy(s.ptr, buf, ret);
s.ptr[s.length] = '\0';
}
} else if (ret == INT_MAX) {
errno = ENOMEM;
} else {
int len = ret + 1;
s.ptr = (char*)almalloc(a, len);
if (s.ptr) {
ret = vsnprintf(s.ptr, len, fmt, ap2);
if (ret < 0) {
free(s.ptr);
s.ptr = NULL;
} else {
s.length = (size_t)ret;
}
}
}
#else
int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
s.ptr = (char*)almalloc(a, ret + 1);
if (s.ptr) {
s.length = (size_t)ret;
memcpy(s.ptr, buf, ret);
s.ptr[s.length] = '\0';
}
} else {
errno = ENOMEM;
}
#endif
return s;
}