[2060] | 1 | //vio_string.c: |
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| 2 | |
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| 3 | /* |
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[3811] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009-2010 |
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[2060] | 5 | * |
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| 6 | * This file is part of libroar a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroar is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[2060] | 23 | * |
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| 24 | * NOTE for everyone want's to change something and send patches: |
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| 25 | * read README and HACKING! There a addition information on |
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| 26 | * the license of this document you need to read before you send |
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| 27 | * any patches. |
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| 28 | * |
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| 29 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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| 30 | * or libpulse*: |
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| 31 | * The libs libroaresd, libroararts and libroarpulse link this lib |
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| 32 | * and are therefore GPL. Because of this it may be illigal to use |
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| 33 | * them with any software that uses libesd, libartsc or libpulse*. |
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| 34 | */ |
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| 35 | |
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| 36 | #include "libroar.h" |
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| 37 | |
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| 38 | int roar_vio_putc (struct roar_vio_calls * vio, char c) { |
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| 39 | return roar_vio_write(vio, &c, 1); |
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| 40 | } |
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| 41 | |
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| 42 | int roar_vio_getc (struct roar_vio_calls * vio) { |
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| 43 | unsigned char c; |
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| 44 | |
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| 45 | if ( roar_vio_read(vio, &c, 1) != 1 ) |
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| 46 | return EOF; |
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| 47 | |
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| 48 | return c; |
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| 49 | } |
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| 50 | |
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| 51 | int roar_vio_printf(struct roar_vio_calls * vio, const char *format, ...) { |
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| 52 | va_list ap; |
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| 53 | int ret; |
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| 54 | char buf[8192]; |
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| 55 | |
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| 56 | va_start(ap, format); |
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| 57 | ret = vsnprintf(buf, 8192, format, ap); |
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| 58 | va_end(ap); |
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| 59 | |
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| 60 | return roar_vio_write(vio, buf, ret); |
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| 61 | } |
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| 62 | |
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[3030] | 63 | char * roar_vio_fgets (struct roar_vio_calls * vio, char * s, size_t size) { |
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[3033] | 64 | size_t have = 0; |
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| 65 | size_t need = size; |
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| 66 | ssize_t ret; |
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| 67 | char cur; |
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| 68 | char buf[1024]; |
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| 69 | off_t offs; |
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| 70 | char * eol; |
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[3030] | 71 | |
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| 72 | if ( size == 0 ) |
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| 73 | return s; |
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| 74 | |
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| 75 | if ( vio == NULL || s == NULL ) |
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| 76 | return NULL; |
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| 77 | |
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| 78 | // space for the \0 |
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| 79 | size -= 1; |
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| 80 | |
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[3033] | 81 | if ( (offs = roar_vio_lseek(vio, 0, SEEK_CUR)) == (off_t)-1 ) { |
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[3030] | 82 | // need to use the one byte at a time methode |
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| 83 | while ( have < size ) { |
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| 84 | if ( roar_vio_read(vio, &cur, 1) != 1 ) |
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| 85 | break; |
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| 86 | |
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| 87 | s[have] = cur; |
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| 88 | have++; |
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| 89 | |
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| 90 | if ( cur == '\n' ) |
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| 91 | break; |
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| 92 | } |
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| 93 | } else { |
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| 94 | // can use the optimized version |
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[3033] | 95 | eol = NULL; |
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| 96 | |
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| 97 | memset(s, '+', size); |
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| 98 | |
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| 99 | while ( have < size && eol == NULL ) { |
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| 100 | ret = roar_vio_read(vio, buf, need > 1023 ? 1023 : need); |
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| 101 | |
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| 102 | if ( ret == -1 || ret == 0 ) |
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| 103 | break; |
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| 104 | |
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| 105 | ROAR_DBG("roar_vio_fgets(*): have=%u", (unsigned int) have); |
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| 106 | |
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| 107 | buf[1023] = 0; |
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| 108 | if ( (eol = strstr(buf, "\n")) == NULL ) { |
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| 109 | memcpy(s, buf, ret); |
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| 110 | s += ret; |
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| 111 | have += ret; |
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| 112 | need -= ret; |
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| 113 | } else { |
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| 114 | offs = eol - buf - ret + 1; |
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| 115 | if ( roar_vio_lseek(vio, offs, SEEK_CUR) == -1 ) |
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| 116 | return NULL; |
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| 117 | |
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| 118 | ROAR_DBG("roar_vio_fgets(*): have=%u", (unsigned int) have); |
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| 119 | ROAR_DBG("roar_vio_fgets(*): eol - buf=%lli", (long long) (eol - buf)); |
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| 120 | |
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| 121 | ret = (size_t)(eol - buf); |
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| 122 | ret++; |
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| 123 | ROAR_DBG("roar_vio_fgets(*): ret=%lli", (long long) ret); |
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| 124 | |
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| 125 | memcpy(s, buf, ret); |
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| 126 | have += ret; |
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| 127 | |
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| 128 | ROAR_DBG("roar_vio_fgets(*): have=%u", (unsigned int) have); |
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| 129 | |
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| 130 | break; |
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| 131 | } |
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| 132 | ROAR_DBG("roar_vio_fgets(*): have=%u", (unsigned int) have); |
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| 133 | } |
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| 134 | |
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[3030] | 135 | } |
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[3033] | 136 | |
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| 137 | ROAR_DBG("roar_vio_fgets(*): have=%u", (unsigned int) have); |
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[3030] | 138 | |
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[3031] | 139 | if ( !have ) |
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| 140 | return NULL; |
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| 141 | |
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| 142 | s[have] = 0; |
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[3030] | 143 | |
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| 144 | return s; |
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| 145 | } |
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[2060] | 146 | |
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| 147 | //ll |
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