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3756 svoboda 1
/*
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 * Copyright (c) 2008 Jiri Svoboda
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "../tester.h"
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#define BUF_SIZE  32
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static char buf[BUF_SIZE + 1];
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char *test_stdio1(void)
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{
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    FILE *file;
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    char *file_name = "/readme";
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    TPRINTF("Open file \"%s\"...", file_name);
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    errno = 0;
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    file = fopen(file_name, "rt");
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    if (file == NULL) {
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        TPRINTF("errno = %d\n", errno);
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        return "Failed opening file";
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    } else
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        TPRINTF("OK\n");
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    TPRINTF("Read file...");
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    size_t cnt = fread(buf, 1, BUF_SIZE, file);
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    if (ferror(file)) {
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        TPRINTF("errno = %d\n", errno);
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        fclose(file);
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        return "Failed reading file";
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    } else
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        TPRINTF("OK\n");
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    buf[cnt] = '\0';
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    TPRINTF("Read %u bytes, string \"%s\"\n", cnt, buf);
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    TPRINTF("Seek to beginning...");
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    if (fseek(file, 0, SEEK_SET) != 0) {
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        TPRINTF("errno = %d\n", errno);
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        fclose(file);
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        return "Failed seeking in file";
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    } else
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        TPRINTF("OK\n");
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    TPRINTF("Read using fgetc()...");
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    while (true) {
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        int c = fgetc(file);
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        if (c == EOF)
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            break;
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        TPRINTF(".");
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    }
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    TPRINTF("[EOF]\n");
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    TPRINTF("Close...");
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    if (fclose(file) != 0) {
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        TPRINTF("errno = %d\n", errno);
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        return "Failed closing file";
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    } else
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        TPRINTF("OK\n");
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    return NULL;
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}