universe@39: /*
universe@39:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@39:  *
universe@39:  * Copyright 2015 Olaf Wintermann. All rights reserved.
universe@39:  *
universe@39:  * Redistribution and use in source and binary forms, with or without
universe@39:  * modification, are permitted provided that the following conditions are met:
universe@39:  *
universe@39:  *   1. Redistributions of source code must retain the above copyright
universe@39:  *      notice, this list of conditions and the following disclaimer.
universe@39:  *
universe@39:  *   2. Redistributions in binary form must reproduce the above copyright
universe@39:  *      notice, this list of conditions and the following disclaimer in the
universe@39:  *      documentation and/or other materials provided with the distribution.
universe@39:  *
universe@39:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@39:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@39:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@39:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@39:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@39:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@39:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@39:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@39:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@39:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@39:  * POSSIBILITY OF SUCH DAMAGE.
universe@39:  */
universe@39: 
universe@39: #include "utils.h"
universe@39: #include <math.h>
universe@39: #include <stdio.h>
universe@39: #include <limits.h>
universe@39: #include <errno.h>
universe@39: 
universe@39: /* COPY FUCNTIONS */
universe@39: void* ucx_strcpy(void* s, void* data) {
universe@39:     char *str = (char*) s;
universe@39:     size_t n = 1+strlen(str);
universe@39:     char *cpy = (char*) malloc(n);
universe@39:     memcpy(cpy, str, n);
universe@39:     return cpy;
universe@39: }
universe@39: 
universe@39: void* ucx_memcpy(void* m, void* n) {
universe@39:     size_t k = *((size_t*)n);
universe@39:     void *cpy = malloc(k);
universe@39:     memcpy(cpy, m, k);
universe@39:     return cpy;
universe@39: }
universe@39: 
universe@39: size_t ucx_stream_copy(void *src, void *dest, read_func readfnc,
universe@39:         write_func writefnc, char* buf, size_t bufsize, size_t n) {
universe@39:     if(n == 0 || bufsize == 0) {
universe@39:         return 0;
universe@39:     }
universe@39:     
universe@39:     char *lbuf;    
universe@39:     size_t ncp = 0;
universe@39:     
universe@39:     if(buf) {
universe@39:         lbuf = buf;
universe@39:     } else {
universe@39:         lbuf = (char*)malloc(bufsize);
universe@39:         if(lbuf == NULL) {
universe@39:             return 0;
universe@39:         }
universe@39:     }
universe@39:     
universe@39:     size_t r;
universe@39:     size_t rn = bufsize > n ? n : bufsize;
universe@39:     while((r = readfnc(lbuf, 1, rn, src)) != 0) {
universe@39:         r = writefnc(lbuf, 1, r, dest);
universe@39:         ncp += r;
universe@39:         n -= r;
universe@39:         rn = bufsize > n ? n : bufsize;
universe@39:         if(r == 0 || n == 0) {
universe@39:             break;
universe@39:         }
universe@39:     }
universe@39:     
universe@39:     if (lbuf != buf) {
universe@39:         free(lbuf);
universe@39:     }
universe@39:     
universe@39:     return ncp;
universe@39: }
universe@39: 
universe@39: /* COMPARE FUNCTIONS */
universe@39: 
universe@39: int ucx_strcmp(void *s1, void *s2, void *data) {
universe@39:     return strcmp((char*)s1, (char*)s2);
universe@39: }
universe@39: 
universe@39: int ucx_strncmp(void *s1, void *s2, void *n) {
universe@39:     return strncmp((char*)s1, (char*)s2, *((size_t*) n));
universe@39: }
universe@39: 
universe@39: int ucx_intcmp(void *i1, void *i2, void *data) {
universe@39:    int a = *((int*) i1);
universe@39:    int b = *((int*) i2);
universe@39:    if (a == b) {
universe@39:        return 0;
universe@39:    } else {
universe@39:        return a < b ? -1 : 1;
universe@39:    }
universe@39: }
universe@39: 
universe@39: int ucx_floatcmp(void *f1, void *f2, void *epsilon) {
universe@39:    float a = *((float*) f1);
universe@39:    float b = *((float*) f2);
universe@39:    float e = !epsilon ? 1e-6f : *((float*)epsilon);
universe@39:    if (fabsf(a - b) < e) {
universe@39:        return 0;
universe@39:    } else {
universe@39:        return a < b ? -1 : 1;
universe@39:    }
universe@39: }
universe@39: 
universe@39: int ucx_doublecmp(void *d1, void *d2, void *epsilon) {
universe@39:    double a = *((float*) d1);
universe@39:    double b = *((float*) d2);
universe@39:    double e = !epsilon ? 1e-14 : *((double*)epsilon);
universe@39:    if (fabs(a - b) < e) {
universe@39:        return 0;
universe@39:    } else {
universe@39:        return a < b ? -1 : 1;
universe@39:    }
universe@39: }
universe@39: 
universe@39: int ucx_ptrcmp(void *ptr1, void *ptr2, void *data) {
universe@39:     intptr_t p1 = (intptr_t) ptr1;
universe@39:     intptr_t p2 = (intptr_t) ptr2;
universe@39:     if (p1 == p2) {
universe@39:         return 0;
universe@39:     } else {
universe@39:         return p1  < p2 ? -1 : 1;
universe@39:     }
universe@39: }
universe@39: 
universe@39: int ucx_memcmp(void *ptr1, void *ptr2, void *n) {
universe@39:     return memcmp(ptr1, ptr2, *((size_t*)n));
universe@39: }
universe@39: 
universe@39: /* PRINTF FUNCTIONS */
universe@39: 
universe@39: #ifdef va_copy
universe@39: #define UCX_PRINTF_BUFSIZE 256
universe@39: #else
universe@39: #pragma message("WARNING: C99 va_copy macro not supported by this platform" \
universe@39:                 " - limiting ucx_*printf to 2 KiB")
universe@39: #define UCX_PRINTF_BUFSIZE 0x800
universe@39: #endif
universe@39: 
universe@39: int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) {
universe@39:     int ret;
universe@39:     va_list ap;
universe@39:     va_start(ap, fmt);
universe@39:     ret = ucx_vfprintf(stream, wfc, fmt, ap);
universe@39:     va_end(ap);
universe@39:     return ret;
universe@39: }
universe@39: 
universe@39: int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) {
universe@39:     char buf[UCX_PRINTF_BUFSIZE];
universe@39: #ifdef va_copy
universe@39:     va_list ap2;
universe@39:     va_copy(ap2, ap);
universe@39:     int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
universe@39:     if (ret < 0) {
universe@39:         return ret;
universe@39:     } else if (ret < UCX_PRINTF_BUFSIZE) {
universe@39:         return (int)wfc(buf, 1, ret, stream);
universe@39:     } else {
universe@39:         if (ret == INT_MAX) {
universe@39:             errno = ENOMEM;
universe@39:             return -1;
universe@39:         }
universe@39:         
universe@39:         int len = ret + 1;
universe@39:         char *newbuf = (char*)malloc(len);
universe@39:         if (!newbuf) {
universe@39:             return -1;
universe@39:         }
universe@39:         
universe@39:         ret = vsnprintf(newbuf, len, fmt, ap2);
universe@39:         if (ret > 0) {
universe@39:             ret = (int)wfc(newbuf, 1, ret, stream);
universe@39:         }
universe@39:         free(newbuf);
universe@39:     }
universe@39:     return ret;
universe@39: #else
universe@39:     int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
universe@39:     if (ret < 0) {
universe@39:         return ret;
universe@39:     } else if (ret < UCX_PRINTF_BUFSIZE) {
universe@39:         return (int)wfc(buf, 1, ret, stream);
universe@39:     } else {
universe@39:         errno = ENOMEM;
universe@39:         return -1;
universe@39:     }
universe@39: #endif
universe@39: }
universe@39: 
universe@39: sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) {
universe@39:     va_list ap;
universe@39:     sstr_t ret;
universe@39:     va_start(ap, fmt);
universe@39:     ret = ucx_vasprintf(allocator, fmt, ap);
universe@39:     va_end(ap);
universe@39:     return ret;
universe@39: }
universe@39: 
universe@39: sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) {
universe@39:     sstr_t s;
universe@39:     s.ptr = NULL;
universe@39:     s.length = 0;
universe@39:     char buf[UCX_PRINTF_BUFSIZE];
universe@39: #ifdef va_copy
universe@39:     va_list ap2;
universe@39:     va_copy(ap2, ap);
universe@39:     int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
universe@39:     if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
universe@39:         s.ptr = (char*)almalloc(a, ret + 1);
universe@39:         if (s.ptr) {
universe@39:             s.length = (size_t)ret;
universe@39:             memcpy(s.ptr, buf, ret);
universe@39:             s.ptr[s.length] = '\0';
universe@39:         }
universe@39:     } else if (ret == INT_MAX) {
universe@39:         errno = ENOMEM;
universe@39:     } else  {
universe@39:         int len = ret + 1;
universe@39:         s.ptr = (char*)almalloc(a, len);
universe@39:         if (s.ptr) {
universe@39:             ret = vsnprintf(s.ptr, len, fmt, ap2);
universe@39:             if (ret < 0) {
universe@39:                 free(s.ptr);
universe@39:                 s.ptr = NULL;
universe@39:             } else {
universe@39:                 s.length = (size_t)ret;
universe@39:             }
universe@39:         }
universe@39:     }
universe@39: #else
universe@39:     int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
universe@39:     if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
universe@39:         s.ptr = (char*)almalloc(a, ret + 1);
universe@39:         if (s.ptr) {
universe@39:             s.length = (size_t)ret;
universe@39:             memcpy(s.ptr, buf, ret);
universe@39:             s.ptr[s.length] = '\0';
universe@39:         }
universe@39:     } else {
universe@39:         errno = ENOMEM;
universe@39:     }
universe@39: #endif
universe@39:     return s;
universe@39: }