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504 | decky | 1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #include <libc.h> |
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30 | #include <unistd.h> |
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31 | #include <stdio.h> |
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974 | cejka | 32 | #include <io/io.h> |
504 | decky | 33 | |
713 | decky | 34 | static char nl = '\n'; |
35 | |||
504 | decky | 36 | int puts(const char * str) |
37 | { |
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38 | size_t count; |
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39 | |||
1173 | cejka | 40 | if (str == NULL) { |
41 | return putnchars("(NULL)",6 ); |
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42 | } |
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43 | |||
504 | decky | 44 | for (count = 0; str[count] != 0; count++); |
713 | decky | 45 | if (write(1, (void * ) str, count) == count) { |
46 | if (write(1, &nl, 1) == 1) |
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47 | return 0; |
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48 | } |
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49 | |||
50 | return EOF; |
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504 | decky | 51 | } |
52 | |||
974 | cejka | 53 | /** Put count chars from buffer to stdout without adding newline |
1173 | cejka | 54 | * @param buf Buffer with size at least count bytes - NULL pointer NOT allowed! |
974 | cejka | 55 | * @param count |
56 | * @return 0 on succes, EOF on fail |
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57 | */ |
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58 | int putnchars(const char * buf, size_t count) |
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59 | { |
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60 | if (write(1, (void * ) buf, count) == count) { |
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61 | return 0; |
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62 | } |
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63 | |||
64 | return EOF; |
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65 | } |
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66 | |||
67 | /** Same as puts, but does not print newline at end |
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68 | * |
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69 | */ |
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70 | int putstr(const char * str) |
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71 | { |
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72 | size_t count; |
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73 | |||
1010 | cejka | 74 | if (str == NULL) { |
75 | return putnchars("(NULL)",6 ); |
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76 | } |
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77 | |||
974 | cejka | 78 | for (count = 0; str[count] != 0; count++); |
79 | if (write(1, (void * ) str, count) == count) { |
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80 | return 0; |
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81 | } |
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82 | |||
83 | return EOF; |
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84 | } |
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85 | |||
1173 | cejka | 86 | int putchar(int c) |
87 | { |
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88 | unsigned char ch = c; |
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89 | if (write(1, (void *)&ch , 1) == 1) { |
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90 | return c; |
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91 | } |
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92 | |||
93 | return EOF; |
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94 | } |
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1465 | cejka | 95 | |
96 | int getchar(void) |
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97 | { |
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98 | unsigned char c; |
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99 | if (read(0, (void *)&c , 1) == 1) { |
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100 | return c; |
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101 | } |
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102 | |||
103 | return EOF; |
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104 | } |
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105 | |||
106 |