--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ucx/utils.c Sat Dec 07 12:14:59 2013 +0100
@@ -0,0 +1,244 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 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_copy(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;
+ }
+
+ size_t ncp = 0;
+ if (!buf) {
+ buf = (char*)malloc(bufsize);
+ if(buf == NULL) {
+ return 0;
+ }
+ }
+
+ size_t r;
+ size_t rn = bufsize > n ? n : bufsize;
+ while((r = readfnc(buf, 1, rn, src)) != 0) {
+ r = writefnc(buf, 1, r, dest);
+ ncp += r;
+ n -= r;
+ rn = bufsize > n ? n : bufsize;
+ if(r == 0 || n == 0) {
+ break;
+ }
+ }
+
+ free(buf);
+ 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) {
+ if (ptr1 == ptr2) {
+ return 0;
+ } else {
+ return ptr1 < ptr2 ? -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*)a->malloc(a->pool, ret + 1);
+ 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*)a->malloc(a->pool, len);
+ 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*)a->malloc(a->pool, ret + 1);
+ s.length = (size_t)ret;
+ memcpy(s.ptr, buf, ret);
+ s.ptr[s.length] = '\0';
+ } else {
+ errno = ENOMEM;
+ }
+#endif
+ return s;
+}