diff -r 000000000000 -r 1f419bd32da1 ucx/utils.c --- /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 +#include +#include +#include + +/* 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; +}