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04277e02 | 1 | /* Copyright (C) 1993-2019 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
96aa2d94 | 3 | |
41bdb6e2 AJ |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
96aa2d94 | 8 | |
41bdb6e2 AJ |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
40a55d20 | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 12 | Lesser General Public License for more details. |
96aa2d94 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. | |
96aa2d94 | 17 | |
41bdb6e2 AJ |
18 | As a special exception, if you link the code in this file with |
19 | files compiled with a GNU compiler to produce an executable, | |
20 | that does not cause the resulting executable to be covered by | |
21 | the GNU Lesser General Public License. This exception does not | |
22 | however invalidate any other reasons why the executable file | |
23 | might be covered by the GNU Lesser General Public License. | |
24 | This exception applies to code released by its copyright holders | |
25 | in files containing the exception. */ | |
96aa2d94 RM |
26 | |
27 | #include "libioP.h" | |
28 | ||
29 | #define PADSIZE 16 | |
30 | static char const blanks[PADSIZE] = | |
31 | {' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; | |
32 | static char const zeroes[PADSIZE] = | |
33 | {'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; | |
34 | ||
9964a145 ZW |
35 | ssize_t |
36 | _IO_padn (FILE *fp, int pad, ssize_t count) | |
96aa2d94 RM |
37 | { |
38 | char padbuf[PADSIZE]; | |
39 | const char *padptr; | |
40a55d20 | 40 | int i; |
9964a145 ZW |
41 | size_t written = 0; |
42 | size_t w; | |
68dbb3a6 | 43 | |
96aa2d94 RM |
44 | if (pad == ' ') |
45 | padptr = blanks; | |
46 | else if (pad == '0') | |
47 | padptr = zeroes; | |
48 | else | |
49 | { | |
40a55d20 UD |
50 | for (i = PADSIZE; --i >= 0; ) |
51 | padbuf[i] = pad; | |
96aa2d94 RM |
52 | padptr = padbuf; |
53 | } | |
54 | for (i = count; i >= PADSIZE; i -= PADSIZE) | |
55 | { | |
40a55d20 | 56 | w = _IO_sputn (fp, padptr, PADSIZE); |
96aa2d94 RM |
57 | written += w; |
58 | if (w != PADSIZE) | |
3d110c7c | 59 | return written; |
96aa2d94 | 60 | } |
68dbb3a6 | 61 | |
96aa2d94 RM |
62 | if (i > 0) |
63 | { | |
40a55d20 | 64 | w = _IO_sputn (fp, padptr, i); |
96aa2d94 RM |
65 | written += w; |
66 | } | |
67 | return written; | |
68 | } | |
d18ea0c5 | 69 | libc_hidden_def (_IO_padn) |