ucx: ucx/utils.c@0c1b7676e74c (annotated)

ucx/utils.c@0c1b7676e74c (annotated)

ucx/utils.c

Sun, 17 May 2015 18:32:41 +0200

author: Mike Becker <universe@uap-core.de>
date: Sun, 17 May 2015 18:32:41 +0200
changeset 194: 0c1b7676e74c
parent 192: 1e51558b9d09
child 222: e0f850709a5c
permissions: -rw-r--r--

finalized AVL tree interface + added implementation skeleton + fixed ucx_ptrcmp()

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2015 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;
     }
     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;
 }

Mercurial > hg > ucx / annotate

ucx/utils.c@0c1b7676e74c (annotated)

ucx/utils.c