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| 1 | /* GATE PROJECT LICENSE: | ||
| 2 | +----------------------------------------------------------------------------+ | ||
| 3 | | Copyright(c) 2018-2025, Stefan Meislinger <sm@opengate.at> | | ||
| 4 | | All rights reserved. | | ||
| 5 | | | | ||
| 6 | | Redistribution and use in source and binary forms, with or without | | ||
| 7 | | modification, are permitted provided that the following conditions are met:| | ||
| 8 | | | | ||
| 9 | | 1. Redistributions of source code must retain the above copyright notice, | | ||
| 10 | | this list of conditions and the following disclaimer. | | ||
| 11 | | 2. Redistributions in binary form must reproduce the above copyright | | ||
| 12 | | notice, this list of conditions and the following disclaimer in the | | ||
| 13 | | documentation and/or other materials provided with the distribution. | | ||
| 14 | | | | ||
| 15 | | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"| | ||
| 16 | | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | | ||
| 17 | | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | | ||
| 18 | | ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | | ||
| 19 | | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | | ||
| 20 | | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | | ||
| 21 | | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | | ||
| 22 | | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | | ||
| 23 | | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | | ||
| 24 | | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | | ||
| 25 | | THE POSSIBILITY OF SUCH DAMAGE. | | ||
| 26 | +----------------------------------------------------------------------------+ | ||
| 27 | */ | ||
| 28 | |||
| 29 | #include "gate/files.h" | ||
| 30 | #include "gate/results.h" | ||
| 31 | |||
| 32 | |||
| 33 | #define GATE_INTERFACE_NAME_FILESTREAM GATE_INTERFACE_NAME_CONTROLSTREAM | ||
| 34 | |||
| 35 | typedef struct gate_filestream_impl | ||
| 36 | { | ||
| 37 | GATE_INTERFACE_VTBL(gate_controlstream)* vbl; | ||
| 38 | gate_atomic_int_t ref_counter; | ||
| 39 | gate_file_t file_handle; | ||
| 40 | gate_bool_t can_read; | ||
| 41 | gate_bool_t can_write; | ||
| 42 | } gate_filestream_impl_t; | ||
| 43 | |||
| 44 | |||
| 45 | 23 | static void gate_filestream_release(void* thisptr) | |
| 46 | { | ||
| 47 | 23 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 48 |
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23 | if (gate_atomic_int_dec(&ptr->ref_counter) == 0) |
| 49 | { | ||
| 50 | 21 | gate_file_close(ptr->file_handle); | |
| 51 | 21 | gate_mem_dealloc(ptr); | |
| 52 | } | ||
| 53 | 23 | } | |
| 54 | 2 | static int gate_filestream_retain(void* thisptr) | |
| 55 | { | ||
| 56 | 2 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 57 | 2 | return (int)gate_atomic_int_inc(&ptr->ref_counter); | |
| 58 | } | ||
| 59 | ✗ | static char const* gate_filestream_get_interface_name(void* thisptr) | |
| 60 | { | ||
| 61 | (void)thisptr; | ||
| 62 | ✗ | return GATE_INTERFACE_NAME_CONTROLSTREAM; | |
| 63 | } | ||
| 64 | 1531 | static gate_result_t gate_filestream_read(void* thisptr, char* buffer, gate_size_t bufferlength, gate_size_t* returned) | |
| 65 | { | ||
| 66 | 1531 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 67 | 1531 | return gate_file_read(ptr->file_handle, buffer, bufferlength, returned); | |
| 68 | } | ||
| 69 | 1 | static gate_result_t gate_filestream_peek(void* thisptr, char* buffer, gate_size_t bufferlength, gate_size_t* returned) | |
| 70 | { | ||
| 71 | gate_result_t ret; | ||
| 72 | 1 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 73 | 1 | gate_int64_t position = 0; | |
| 74 | do | ||
| 75 | { | ||
| 76 | 1 | ret = gate_file_pos(ptr->file_handle, &position); | |
| 77 |
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1 | if (GATE_FAILED(ret)) |
| 78 | { | ||
| 79 | ✗ | break; | |
| 80 | } | ||
| 81 | 1 | ret = gate_file_read(ptr->file_handle, buffer, bufferlength, returned); | |
| 82 |
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1 | if (GATE_FAILED(ret)) |
| 83 | { | ||
| 84 | ✗ | break; | |
| 85 | } | ||
| 86 | 1 | ret = gate_file_seek(ptr->file_handle, position, GATE_FILE_SEEK_ORIGIN_BEGIN, NULL); | |
| 87 | } while (0); | ||
| 88 | 1 | return ret; | |
| 89 | } | ||
| 90 | 102 | static gate_result_t gate_filestream_write(void* thisptr, char const* buffer, gate_size_t bufferlength, gate_size_t* written) | |
| 91 | { | ||
| 92 | 102 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 93 | 102 | return gate_file_write(ptr->file_handle, buffer, bufferlength, written); | |
| 94 | } | ||
| 95 | 1 | static gate_result_t gate_filestream_flush(void* thisptr) | |
| 96 | { | ||
| 97 | 1 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 98 | 1 | return gate_file_flush(ptr->file_handle); | |
| 99 | } | ||
| 100 | ✗ | static gate_result_t gate_filestream_get_resource(void* thisptr, gate_enumint_t resource_type, gate_uintptr_t* resource) | |
| 101 | { | ||
| 102 | ✗ | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 103 | ✗ | gate_result_t ret = GATE_RESULT_NOTSUPPORTED; | |
| 104 | do | ||
| 105 | { | ||
| 106 | ✗ | if (resource == NULL) | |
| 107 | { | ||
| 108 | ✗ | ret = GATE_RESULT_INVALIDARG; | |
| 109 | ✗ | break; | |
| 110 | } | ||
| 111 | ✗ | switch (resource_type) | |
| 112 | { | ||
| 113 | ✗ | case GATE_STREAM_RESOURCE_DEFAULT: | |
| 114 | case GATE_STREAM_RESOURCE_INPUT: | ||
| 115 | case GATE_STREAM_RESOURCE_OUTPUT: | ||
| 116 | { | ||
| 117 | ✗ | *resource = (gate_uintptr_t)ptr->file_handle; | |
| 118 | ✗ | ret = GATE_RESULT_OK; | |
| 119 | ✗ | break; | |
| 120 | } | ||
| 121 | } | ||
| 122 | ✗ | } while (0); | |
| 123 | ✗ | return ret; | |
| 124 | } | ||
| 125 | ✗ | static gate_result_t gate_filestream_can_read(void* thisptr, gate_bool_t* return_value) | |
| 126 | { | ||
| 127 | ✗ | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 128 | ✗ | gate_result_t ret = GATE_RESULT_OK; | |
| 129 | ✗ | *return_value = ptr->can_read; | |
| 130 | ✗ | return ret; | |
| 131 | } | ||
| 132 | ✗ | static gate_result_t gate_filestream_can_write(void* thisptr, gate_bool_t* return_value) | |
| 133 | { | ||
| 134 | ✗ | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 135 | ✗ | gate_result_t ret = GATE_RESULT_OK; | |
| 136 | ✗ | *return_value = ptr->can_write; | |
| 137 | ✗ | return ret; | |
| 138 | } | ||
| 139 | ✗ | static gate_result_t gate_filestream_get_size(void* thisptr, gate_int64_t* return_value) | |
| 140 | { | ||
| 141 | ✗ | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 142 | ✗ | return gate_file_size(ptr->file_handle, return_value); | |
| 143 | } | ||
| 144 | ✗ | static gate_result_t gate_filestream_get_available(void* thisptr, gate_int64_t* return_value) | |
| 145 | { | ||
| 146 | ✗ | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 147 | ✗ | gate_int64_t filesize = 0; | |
| 148 | ✗ | gate_int64_t filepos = 0; | |
| 149 | gate_result_t ret; | ||
| 150 | do | ||
| 151 | { | ||
| 152 | ✗ | ret = gate_file_size(ptr->file_handle, &filesize); | |
| 153 | ✗ | GATE_BREAK_IF_FAILED(ret); | |
| 154 | ✗ | ret = gate_file_pos(ptr->file_handle, &filepos); | |
| 155 | ✗ | GATE_BREAK_IF_FAILED(ret); | |
| 156 | ✗ | if (return_value != NULL) | |
| 157 | { | ||
| 158 | ✗ | *return_value = filesize - filepos; | |
| 159 | } | ||
| 160 | } while (0); | ||
| 161 | ✗ | return ret; | |
| 162 | } | ||
| 163 | 9 | static gate_result_t gate_filestream_seek(void* thisptr, gate_int64_t position, gate_enumint_t origin, gate_int64_t* new_position) | |
| 164 | { | ||
| 165 | 9 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 166 | 9 | unsigned native_origin = GATE_FILE_SEEK_ORIGIN_BEGIN; | |
| 167 | 9 | gate_result_t ret = GATE_RESULT_NOTSUPPORTED; | |
| 168 | do | ||
| 169 | { | ||
| 170 |
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9 | if (origin == GATE_STREAM_SEEK_CURRENT) |
| 171 | { | ||
| 172 | ✗ | native_origin = GATE_FILE_SEEK_ORIGIN_CURPOS; | |
| 173 | } | ||
| 174 |
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9 | else if (origin == GATE_STREAM_SEEK_BEGIN) |
| 175 | { | ||
| 176 | 9 | native_origin = GATE_FILE_SEEK_ORIGIN_BEGIN; | |
| 177 | } | ||
| 178 | ✗ | else if (origin == GATE_STREAM_SEEK_END) | |
| 179 | { | ||
| 180 | ✗ | native_origin = GATE_FILE_SEEK_ORIGIN_END; | |
| 181 | } | ||
| 182 | else | ||
| 183 | { | ||
| 184 | ✗ | ret = GATE_RESULT_INVALIDARG; | |
| 185 | ✗ | break; | |
| 186 | } | ||
| 187 | |||
| 188 | 9 | ret = gate_file_seek(ptr->file_handle, position, native_origin, new_position); | |
| 189 | } while (0); | ||
| 190 | 9 | return ret; | |
| 191 | } | ||
| 192 | 8 | static gate_result_t gate_filestream_reset(void* thisptr) | |
| 193 | { | ||
| 194 | 8 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 195 | 8 | gate_int64_t dummy = 0; | |
| 196 | 8 | gate_result_t ret = gate_filestream_seek(ptr, 0, GATE_STREAM_SEEK_BEGIN, &dummy); | |
| 197 |
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8 | if (GATE_SUCCEEDED(ret)) |
| 198 | { | ||
| 199 |
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8 | if (ptr->can_write) |
| 200 | { | ||
| 201 | 8 | ret = gate_file_truncate(ptr->file_handle); | |
| 202 | } | ||
| 203 | } | ||
| 204 | 8 | return ret; | |
| 205 | } | ||
| 206 | 2 | static gate_result_t gate_filestream_close(void* thisptr, gate_enumint_t close_type) | |
| 207 | { | ||
| 208 | 2 | gate_filestream_impl_t* ptr = (gate_filestream_impl_t*)thisptr; | |
| 209 | 2 | gate_result_t ret = gate_file_close(ptr->file_handle); | |
| 210 | (void)close_type; | ||
| 211 |
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2 | if (GATE_SUCCEEDED(ret)) |
| 212 | { | ||
| 213 | 2 | ptr->file_handle = GATE_FILE_INVALID; | |
| 214 | } | ||
| 215 | 2 | return ret; | |
| 216 | } | ||
| 217 | |||
| 218 | |||
| 219 | static GATE_INTERFACE_VTBL(gate_controlstream) gate_filestream_vtbl; | ||
| 220 | 21 | static void gate_init_filestream_vtbl() | |
| 221 | { | ||
| 222 |
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21 | if (!gate_filestream_vtbl.get_interface_name) |
| 223 | { | ||
| 224 | GATE_INTERFACE_VTBL(gate_controlstream) const local_vtbl = | ||
| 225 | { | ||
| 226 | &gate_filestream_get_interface_name, | ||
| 227 | &gate_filestream_release, | ||
| 228 | &gate_filestream_retain, | ||
| 229 | &gate_filestream_read, | ||
| 230 | &gate_filestream_peek, | ||
| 231 | &gate_filestream_write, | ||
| 232 | &gate_filestream_flush, | ||
| 233 | &gate_filestream_get_resource, | ||
| 234 | &gate_filestream_can_read, | ||
| 235 | &gate_filestream_can_write, | ||
| 236 | &gate_filestream_get_size, | ||
| 237 | &gate_filestream_get_available, | ||
| 238 | &gate_filestream_seek, | ||
| 239 | &gate_filestream_reset, | ||
| 240 | &gate_filestream_close | ||
| 241 | }; | ||
| 242 | 3 | gate_filestream_vtbl = local_vtbl; | |
| 243 | } | ||
| 244 | 21 | } | |
| 245 | |||
| 246 | |||
| 247 | 21 | gate_result_t gate_file_openstream(gate_string_t const* filepath, gate_enumint_t flags, gate_filestream_t** ptrtostreamptr) | |
| 248 | { | ||
| 249 | gate_result_t result; | ||
| 250 | gate_filestream_impl_t* ret; | ||
| 251 | |||
| 252 | do | ||
| 253 | { | ||
| 254 | 21 | ret = (gate_filestream_impl_t*)gate_mem_alloc(sizeof(gate_filestream_impl_t)); | |
| 255 |
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21 | if (ret == NULL) |
| 256 | { | ||
| 257 | ✗ | result = GATE_RESULT_OUTOFMEMORY; | |
| 258 | ✗ | break; | |
| 259 | } | ||
| 260 | 21 | gate_init_filestream_vtbl(); | |
| 261 | 21 | ret->vbl = &gate_filestream_vtbl; | |
| 262 | 21 | ret->can_read = false; | |
| 263 | 21 | ret->can_write = false; | |
| 264 | 21 | gate_atomic_int_init(&ret->ref_counter, 1); | |
| 265 | |||
| 266 | 21 | result = gate_file_open(filepath, flags, &ret->file_handle); | |
| 267 |
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21 | if (GATE_FAILED(result)) |
| 268 | { | ||
| 269 | ✗ | break; | |
| 270 | } | ||
| 271 | |||
| 272 |
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21 | if (GATE_FLAG_ENABLED(flags, GATE_STREAM_OPEN_READ)) |
| 273 | { | ||
| 274 | 17 | ret->can_read = true; | |
| 275 | } | ||
| 276 |
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21 | if (GATE_FLAG_ENABLED(flags, GATE_STREAM_OPEN_WRITE)) |
| 277 | { | ||
| 278 | 12 | ret->can_write = true; | |
| 279 | } | ||
| 280 | |||
| 281 |
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21 | if (ptrtostreamptr) |
| 282 | { | ||
| 283 | 21 | *ptrtostreamptr = (gate_filestream_t*)ret; | |
| 284 | 21 | ret = NULL; | |
| 285 | } | ||
| 286 | 21 | result = GATE_RESULT_OK; | |
| 287 | } while (0); | ||
| 288 |
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21 | if (ret != NULL) |
| 289 | { | ||
| 290 | ✗ | gate_mem_dealloc(ret); | |
| 291 | } | ||
| 292 | 21 | return result; | |
| 293 | } | ||
| 294 |