Sun, 21 May 2023 16:22:09 +0200
fix const-ness of non-mutating iterator creation for maps
universe@483 | 1 | /* |
universe@483 | 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
universe@483 | 3 | * |
universe@483 | 4 | * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. |
universe@483 | 5 | * |
universe@483 | 6 | * Redistribution and use in source and binary forms, with or without |
universe@483 | 7 | * modification, are permitted provided that the following conditions are met: |
universe@483 | 8 | * |
universe@483 | 9 | * 1. Redistributions of source code must retain the above copyright |
universe@483 | 10 | * notice, this list of conditions and the following disclaimer. |
universe@483 | 11 | * |
universe@483 | 12 | * 2. Redistributions in binary form must reproduce the above copyright |
universe@483 | 13 | * notice, this list of conditions and the following disclaimer in the |
universe@483 | 14 | * documentation and/or other materials provided with the distribution. |
universe@483 | 15 | * |
universe@483 | 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
universe@483 | 17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
universe@483 | 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
universe@483 | 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
universe@483 | 20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
universe@483 | 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
universe@483 | 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
universe@483 | 23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
universe@483 | 24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
universe@483 | 25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
universe@483 | 26 | * POSSIBILITY OF SUCH DAMAGE. |
universe@483 | 27 | */ |
universe@483 | 28 | |
universe@483 | 29 | #include "cx/utils.h" |
universe@483 | 30 | |
universe@674 | 31 | #define CX_STREAM_BCOPY_BUF_SIZE 8192 |
universe@674 | 32 | #define CX_STREAM_COPY_BUF_SIZE 1024 |
universe@674 | 33 | |
universe@674 | 34 | size_t cx_stream_bncopy( |
universe@674 | 35 | void *src, |
universe@674 | 36 | void *dest, |
universe@674 | 37 | cx_read_func rfnc, |
universe@674 | 38 | cx_write_func wfnc, |
universe@674 | 39 | char *buf, |
universe@674 | 40 | size_t bufsize, |
universe@674 | 41 | size_t n |
universe@674 | 42 | ) { |
universe@674 | 43 | if (n == 0) { |
universe@483 | 44 | return 0; |
universe@483 | 45 | } |
universe@674 | 46 | |
universe@674 | 47 | char *lbuf; |
universe@674 | 48 | size_t ncp = 0; |
universe@674 | 49 | |
universe@674 | 50 | if (buf) { |
universe@674 | 51 | if (bufsize == 0) return 0; |
universe@674 | 52 | lbuf = buf; |
universe@674 | 53 | } else { |
universe@674 | 54 | if (bufsize == 0) bufsize = CX_STREAM_BCOPY_BUF_SIZE; |
universe@674 | 55 | lbuf = malloc(bufsize); |
universe@674 | 56 | if (lbuf == NULL) { |
universe@674 | 57 | return 0; |
universe@674 | 58 | } |
universe@674 | 59 | } |
universe@674 | 60 | |
universe@674 | 61 | size_t r; |
universe@674 | 62 | size_t rn = bufsize > n ? n : bufsize; |
universe@674 | 63 | while ((r = rfnc(lbuf, 1, rn, src)) != 0) { |
universe@674 | 64 | r = wfnc(lbuf, 1, r, dest); |
universe@674 | 65 | ncp += r; |
universe@674 | 66 | n -= r; |
universe@674 | 67 | rn = bufsize > n ? n : bufsize; |
universe@674 | 68 | if (r == 0 || n == 0) { |
universe@674 | 69 | break; |
universe@674 | 70 | } |
universe@674 | 71 | } |
universe@674 | 72 | |
universe@674 | 73 | if (lbuf != buf) { |
universe@674 | 74 | free(lbuf); |
universe@674 | 75 | } |
universe@674 | 76 | |
universe@674 | 77 | return ncp; |
universe@674 | 78 | } |
universe@674 | 79 | |
universe@674 | 80 | size_t cx_stream_ncopy( |
universe@674 | 81 | void *src, |
universe@674 | 82 | void *dest, |
universe@674 | 83 | cx_read_func rfnc, |
universe@674 | 84 | cx_write_func wfnc, |
universe@674 | 85 | size_t n |
universe@674 | 86 | ) { |
universe@675 | 87 | char buf[CX_STREAM_COPY_BUF_SIZE]; |
universe@675 | 88 | return cx_stream_bncopy(src, dest, rfnc, wfnc, |
universe@675 | 89 | buf, CX_STREAM_COPY_BUF_SIZE, n); |
universe@483 | 90 | } |
universe@674 | 91 | |
universe@674 | 92 | #ifndef CX_SZMUL_BUILTIN |
universe@674 | 93 | #include "szmul.c" |
universe@483 | 94 | #endif |