43 lines
829 B
C
43 lines
829 B
C
#include "frame.h"
|
|
#include "lexer_input.h"
|
|
|
|
int lexer_input(lexerinput_t* input, char* buf, size_t max_size, int nullvalue)
|
|
{
|
|
switch (input->type)
|
|
{
|
|
case LEXINPUT_PHYSFS:
|
|
if (PHYSFS_eof(input->input.physfsfile))
|
|
{
|
|
buf[0] = EOF;
|
|
return nullvalue;
|
|
}
|
|
else
|
|
{
|
|
int result = PHYSFS_read(input->input.physfsfile, buf, 1, max_size);
|
|
if (result == -1)
|
|
{
|
|
buf[0] = EOF;
|
|
return nullvalue;
|
|
}
|
|
return result;
|
|
}
|
|
break;
|
|
|
|
case LEXINPUT_BUFFER:
|
|
if (input->input.buffer.begin != input->input.buffer.end)
|
|
{
|
|
buf[0] = *input->input.buffer.begin++;
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
buf[0] = EOF;
|
|
return nullvalue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
ASSERT(!"Invalid input type!", "Invalid input type used for lexer (numeric value: %u)", (unsigned int)input->type);
|
|
return nullvalue;
|
|
}
|