GCC Code Coverage Report

Line	Branch	Exec	Source
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/platforms.h"
30			#include "gate/streams.h"
31			#include "gate/results.h"
32			#include "gate/debugging.h"
33			#include "gate/strings.h"
34			#include "gate/synchronization.h"
35			#include "gate/times.h"
36
37
38
39			/*****************************
40			* generic implementations *
41			*****************************/
42
43		✗	gate_result_t gate_platform_stream_buffer_init(gate_platform_stream_buffer_t* strmbuf, gate_platform_stream_t strm,
44			gate_int64_t total_size, gate_int64_t position, gate_size_t blocksize)
45			{
46		✗	gate_result_t ret = GATE_RESULT_INVALIDARG;
47		✗	if (strmbuf != NULL)
48			{
49		✗	gate_mem_clear(strmbuf, sizeof(gate_platform_stream_buffer_t));
50		✗	strmbuf->stream = strm;
51		✗	strmbuf->total_size = total_size;
52		✗	strmbuf->position = position;
53		✗	strmbuf->block_size = blocksize;
54		✗	strmbuf->block_buffer_used = 0;
55		✗	ret = GATE_RESULT_OK;
56			}
57		✗	return ret;
58			}
59		✗	gate_result_t gate_platform_stream_buffer_read(gate_platform_stream_buffer_t* strmbuf, char* buffer, gate_size_t bufferlength, gate_size_t* returned)
60			{
61		✗	gate_result_t ret = GATE_RESULT_FAILED;
62		✗	void* read_buffer = buffer;
63		✗	gate_size_t read_buffer_length = bufferlength;
64		✗	gate_size_t tmp_received = 0;
65		✗	gate_size_t* ptr_read_buffer_returned = ((returned == NULL) ? &tmp_received : returned);
66
67			do
68			{
69		✗	if ((strmbuf == NULL) || (bufferlength == 0) || (buffer == NULL))
70			{
71		✗	ret = GATE_RESULT_INVALIDARG;
72		✗	break;
73			}
74		✗	if (!gate_platform_stream_valid(strmbuf->stream))
75			{
76		✗	ret = GATE_RESULT_INVALIDSTATE;
77		✗	break;
78			}
79
80		✗	if (returned != NULL)
81			{
82		✗	*returned = 0;
83			}
84
85		✗	if (strmbuf->block_buffer_used == 0)
86			{
87			/* nothing in buffer -> try to read from stream */
88
89		✗	if (strmbuf->position >= 0)
90			{
91		✗	if (strmbuf->total_size >= 0)
92			{
93		✗	if (strmbuf->position >= strmbuf->total_size)
94			{
95			/* end of stream reached, stop further reading */
96		✗	if (returned != NULL)
97			{
98		✗	*returned = 0;
99		✗	ret = GATE_RESULT_OK;
100		✗	break;
101			}
102			}
103			}
104
105		✗	ret = gate_platform_stream_seek(strmbuf->stream, strmbuf->position, GATE_PLATFORM_STREAM_ORIGIN_BEGIN, NULL);
106		✗	if (GATE_FAILED(ret))
107			{
108		✗	GATE_DEBUG_TRACE_PLATFORM_ERROR("gate_platform_stream_seek() failed");
109			/* failing to change the file pointer is unwanted,
110			but assuming we are in a valid state, the file pointer
111			is already at the correct position*/
112			}
113			}
114
115		✗	if (strmbuf->block_size != 0)
116			{
117		✗	if (bufferlength < strmbuf->block_size)
118			{
119			/* read into local buffer*/
120		✗	read_buffer = &strmbuf->block_buffer[0];
121		✗	read_buffer_length = strmbuf->block_size;
122		✗	ptr_read_buffer_returned = &strmbuf->block_buffer_used;
123			}
124			else
125			{
126			/* align buffer to block-size */
127		✗	bufferlength -= (bufferlength % strmbuf->block_size);
128			}
129			}
130
131		✗	ret = gate_platform_stream_read(strmbuf->stream, read_buffer, read_buffer_length, ptr_read_buffer_returned);
132		✗	if (GATE_FAILED(ret))
133			{
134		✗	GATE_DEBUG_TRACE_PLATFORM_ERROR("gate_platform_stream_read() failed");
135		✗	break;
136			}
137
138			/* success case: update stream position if available */
139		✗	if (strmbuf->position >= 0)
140			{
141		✗	strmbuf->position += *ptr_read_buffer_returned;
142			}
143			}
144
145		✗	if (strmbuf->block_buffer_used != 0)
146			{
147			/* if there are bytes in the internal buffer -> return them */
148
149		✗	if (bufferlength >= strmbuf->block_buffer_used)
150			{
151		✗	gate_mem_copy(buffer, &strmbuf->block_buffer[0], strmbuf->block_buffer_used);
152		✗	if (returned != NULL)
153			{
154		✗	*returned = strmbuf->block_buffer_used;
155			}
156		✗	strmbuf->block_buffer_used = 0;
157		✗	ret = GATE_RESULT_OK;
158			}
159			else
160			{
161		✗	gate_mem_copy(buffer, &strmbuf->block_buffer[0], bufferlength);
162		✗	if (returned != NULL)
163			{
164		✗	*returned = bufferlength;
165			}
166		✗	gate_mem_move(&strmbuf->block_buffer[0], &strmbuf->block_buffer[bufferlength], strmbuf->block_buffer_used - bufferlength);
167		✗	strmbuf->block_buffer_used -= bufferlength;
168		✗	ret = GATE_RESULT_OK;
169			}
170			}
171			} while (0);
172
173		✗	return ret;
174			}
175		✗	gate_result_t gate_platform_stream_buffer_write(gate_platform_stream_buffer_t* strmbuf, char const* buffer, gate_size_t bufferlength, gate_size_t* written)
176			{
177		✗	gate_result_t ret = GATE_RESULT_FAILED;
178
179			gate_size_t block_buffer_avail;
180		✗	gate_size_t written_internal = 0;
181
182			do
183			{
184		✗	if ((strmbuf == NULL) || (bufferlength == 0) || (buffer == NULL))
185			{
186		✗	ret = GATE_RESULT_INVALIDARG;
187		✗	break;
188			}
189		✗	if (!gate_platform_stream_valid(strmbuf->stream))
190			{
191		✗	ret = GATE_RESULT_INVALIDSTATE;
192		✗	break;
193			}
194
195		✗	if (strmbuf->position >= 0)
196			{
197			/* set native stream position */
198		✗	ret = gate_platform_stream_seek(strmbuf->stream, strmbuf->position, GATE_PLATFORM_STREAM_ORIGIN_BEGIN, NULL);
199		✗	if (GATE_FAILED(ret))
200			{
201		✗	GATE_DEBUG_TRACE_PLATFORM_ERROR("gate_platform_stream_seek() failed");
202			/* ignore error and assume that stream is at correct position */
203			}
204			}
205
206		✗	if (strmbuf->block_size == 0)
207			{
208			/* no block sizes -> no troubles */
209		✗	written_internal = 0;
210		✗	ret = gate_platform_stream_write(strmbuf->stream, buffer, bufferlength, &written_internal);
211		✗	if (GATE_SUCCEEDED(ret) && (strmbuf->position >= 0))
212			{
213			/* success case: update stream position if available */
214		✗	strmbuf->position += (gate_int64_t)written_internal;
215			}
216		✗	if (written)
217			{
218		✗	*written = written_internal;
219			}
220		✗	break;
221			}
222
223
224			/* work with block sizes */
225
226		✗	if (strmbuf->block_buffer_used == 0)
227			{
228			/* block buffer is empty */
229		✗	if (bufferlength >= strmbuf->block_size)
230			{
231			/* data block is big enough to directly write it to stream */
232
233		✗	bufferlength -= bufferlength % strmbuf->block_size;
234		✗	written_internal = 0;
235		✗	ret = gate_platform_stream_write(strmbuf->stream, buffer, bufferlength, &written_internal);
236
237		✗	if (GATE_SUCCEEDED(ret) && (strmbuf->position >= 0))
238			{
239			/* success case: update stream position if available */
240		✗	strmbuf->position += (gate_int64_t)written_internal;
241			}
242		✗	if (written)
243			{
244		✗	*written = written_internal;
245			}
246		✗	break;
247			}
248			}
249
250			/* work with block buffer: */
251		✗	block_buffer_avail = strmbuf->block_size - strmbuf->block_buffer_used;
252
253		✗	if (bufferlength > block_buffer_avail)
254			{
255		✗	bufferlength = block_buffer_avail;
256			}
257
258		✗	gate_mem_copy(&strmbuf->block_buffer[strmbuf->block_buffer_used], buffer, bufferlength);
259		✗	if (written != NULL)
260			{
261		✗	*written = bufferlength;
262			}
263		✗	strmbuf->block_buffer_used += bufferlength;
264
265		✗	if (strmbuf->block_buffer_used >= strmbuf->block_size)
266			{
267		✗	ret = gate_platform_stream_write(strmbuf->stream, &strmbuf->block_buffer[0], strmbuf->block_size, &written_internal);
268		✗	if (GATE_SUCCEEDED(ret))
269			{
270		✗	if (strmbuf->position >= 0)
271			{
272			/* success case: update stream position if available */
273		✗	strmbuf->position += (gate_int64_t)written_internal;
274			}
275
276		✗	if (written_internal < strmbuf->block_size)
277			{
278			/* no all was written to stream */
279		✗	gate_mem_move(&strmbuf->block_buffer[0], &strmbuf->block_buffer[written_internal], strmbuf->block_size - written_internal);
280		✗	strmbuf->block_buffer_used -= written_internal;
281			}
282			else
283			{
284		✗	strmbuf->block_buffer_used = 0;
285			}
286			}
287			else
288			{
289			/* remove what was added to block buffer */
290		✗	strmbuf->block_buffer_used -= bufferlength;
291			}
292			}
293			else
294			{
295			/* block buffer is not full, cannot do anything now */
296		✗	ret = GATE_RESULT_OK;
297			}
298		✗	break;
299
300			} while (0);
301
302		✗	return ret;
303
304			}
305		✗	gate_result_t gate_platform_stream_buffer_seek(gate_platform_stream_buffer_t* strmbuf, gate_int64_t position, int origin, gate_int64_t* final_position)
306			{
307		✗	gate_result_t ret = GATE_RESULT_NOTSUPPORTED;
308		✗	gate_int64_t new_pos = 0;
309
310		✗	if (final_position == NULL)
311			{
312		✗	final_position = &new_pos;
313			}
314
315			do
316			{
317		✗	if (origin == GATE_PLATFORM_STREAM_ORIGIN_BEGIN)
318			{
319		✗	if ((position < 0) || ((strmbuf->total_size >= 0) && (position > strmbuf->total_size)))
320			{
321		✗	ret = GATE_RESULT_OUTOFBOUNDS;
322		✗	break;
323			}
324			}
325		✗	else if (origin == GATE_PLATFORM_STREAM_ORIGIN_CURRENT)
326			{
327		✗	if (strmbuf->position >= 0)
328			{
329		✗	if (strmbuf->position + position < 0)
330			{
331		✗	ret = GATE_RESULT_OUTOFBOUNDS;
332		✗	break;
333			}
334		✗	if ((strmbuf->total_size >= 0) && (strmbuf->position + position > strmbuf->total_size))
335			{
336		✗	ret = GATE_RESULT_OUTOFBOUNDS;
337		✗	break;
338			}
339			/* convert to absolute position: */
340		✗	position = strmbuf->position + position;
341		✗	origin = GATE_PLATFORM_STREAM_ORIGIN_BEGIN;
342			}
343			}
344		✗	else if (origin == GATE_PLATFORM_STREAM_ORIGIN_END)
345			{
346		✗	if (strmbuf->total_size >= 0)
347			{
348		✗	if ((position > 0) || (strmbuf->total_size + position < 0))
349			{
350		✗	ret = GATE_RESULT_OUTOFBOUNDS;
351		✗	break;
352			}
353
354			/* convert to absolute position: */
355		✗	position = strmbuf->total_size + position;
356		✗	origin = GATE_PLATFORM_STREAM_ORIGIN_BEGIN;
357			}
358			}
359			else
360			{
361		✗	ret = GATE_RESULT_INVALIDARG;
362		✗	break;
363			}
364
365		✗	ret = gate_platform_stream_seek(strmbuf->stream, position, GATE_PLATFORM_STREAM_ORIGIN_BEGIN, final_position);
366		✗	if (GATE_SUCCEEDED(ret))
367			{
368		✗	if (strmbuf->position >= 0)
369			{
370		✗	strmbuf->position = *final_position;
371			}
372			}
373			} while (0);
374
375		✗	return ret;
376			}
377
378		3	gate_result_t gate_platform_print_last_error(char* buffer, gate_size_t buffer_len)
379			{
380		3	gate_int32_t last_error = gate_platform_get_last_error();
381		3	return gate_platform_print_error(last_error, buffer, buffer_len);
382			}
383