LCOV - code coverage report
Current view: top level - libs/mem/src - mem_concat_buffer.c (source / functions) Coverage Total Hit
Test: coverage.info Lines: 0.0 % 37 0
Test Date: 2026-03-01 04:31:48 Functions: 0.0 % 1 0
Branches: 0.0 % 30 0

             Branch data     Line data    Source code
       1                 :             : #include "mem.h"
       2                 :             : 
       3                 :             : /**
       4                 :             :  * @brief Concatenate a raw byte buffer to a descriptor.
       5                 :             :  *
       6                 :             :  * Interprets @p source_buffer_size as the exact number of bytes to append.
       7                 :             :  * The destination is resized by `source_buffer_size / element_size` elements
       8                 :             :  * and receives a byte-for-byte payload copy.
       9                 :             :  *
      10                 :             :  * This helper performs binary concatenation only. It does not scan for
      11                 :             :  * `'\0'`, does not enforce string termination, and preserves embedded zero
      12                 :             :  * bytes exactly as provided.
      13                 :             :  */
      14                 :           0 : Return memory_concat_buffer(
      15                 :             :         memory     *destination,
      16                 :             :         const void *source_buffer,
      17                 :             :         size_t     source_buffer_size)
      18                 :             : {
      19                 :             :         /* Status returned by this function through provide()
      20                 :             :            Default value assumes successful completion */
      21                 :           0 :         Return status = SUCCESS;
      22                 :             : 
      23         [ #  # ]:           0 :         if(destination == NULL)
      24                 :             :         {
      25                 :           0 :                 report("Memory management; concat_buffer destination must be non-NULL");
      26                 :           0 :                 provide(FAILURE);
      27                 :             :         }
      28                 :             : 
      29         [ #  # ]:           0 :         if(destination->element_size == 0)
      30                 :             :         {
      31                 :           0 :                 report("Memory management; Destination element size is zero (uninitialized)");
      32                 :           0 :                 provide(FAILURE);
      33                 :             :         }
      34                 :             : 
      35         [ #  # ]:           0 :         if(source_buffer == NULL)
      36                 :             :         {
      37         [ #  # ]:           0 :                 if(source_buffer_size == 0)
      38                 :             :                 {
      39                 :           0 :                         provide(status);
      40                 :             :                 }
      41                 :             : 
      42                 :           0 :                 report("Memory management; concat_buffer source is NULL while size is %zu",source_buffer_size);
      43                 :           0 :                 provide(FAILURE);
      44                 :             :         }
      45                 :             : 
      46         [ #  # ]:           0 :         if((source_buffer_size % destination->element_size) != 0)
      47                 :             :         {
      48                 :           0 :                 report("Memory management; concat_buffer size %zu is not divisible by element size %zu",source_buffer_size,destination->element_size);
      49                 :           0 :                 provide(FAILURE);
      50                 :             :         }
      51                 :             : 
      52                 :           0 :         size_t append_elements = 0;
      53                 :             : 
      54         [ #  # ]:           0 :         if(TRIUMPH & status)
      55                 :             :         {
      56                 :           0 :                 append_elements = source_buffer_size / destination->element_size;
      57                 :             :         }
      58                 :             : 
      59         [ #  # ]:           0 :         if(append_elements == 0)
      60                 :             :         {
      61                 :           0 :                 provide(status);
      62                 :             :         }
      63                 :             : 
      64         [ #  # ]:           0 :         if(append_elements > SIZE_MAX - destination->length)
      65                 :             :         {
      66                 :           0 :                 report("Memory management; concat_buffer would overflow element count");
      67                 :           0 :                 provide(FAILURE);
      68                 :             :         }
      69                 :             : 
      70                 :           0 :         size_t offset_bytes = 0;
      71                 :             : 
      72   [ #  #  #  # ]:           0 :         run(memory_guarded_size(destination->element_size,destination->length,&offset_bytes));
      73                 :             : 
      74         [ #  # ]:           0 :         if(CRITICAL & status)
      75                 :             :         {
      76                 :           0 :                 report("Memory management; Overflow computing concat_buffer destination offset");
      77                 :           0 :                 provide(status);
      78                 :             :         }
      79                 :             : 
      80   [ #  #  #  # ]:           0 :         run(resize(destination,destination->length + append_elements));
      81                 :             : 
      82         [ #  # ]:           0 :         if(TRIUMPH & status)
      83                 :             :         {
      84                 :           0 :                 unsigned char *destination_bytes = (unsigned char *)destination->data;
      85                 :             : 
      86         [ #  # ]:           0 :                 if(destination_bytes == NULL)
      87                 :             :                 {
      88                 :           0 :                         report("Memory management; Destination data pointer is NULL during concat_buffer");
      89                 :           0 :                         status = FAILURE;
      90                 :             :                 } else {
      91                 :           0 :                         memcpy(destination_bytes + offset_bytes,source_buffer,source_buffer_size);
      92                 :             :                 }
      93                 :             :         }
      94                 :             : 
      95                 :           0 :         provide(status);
      96                 :             : }
        

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