mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-05-04 22:35:46 +00:00
Code Activity

io: refactor string and file work into new unit

Browse source
This commit is contained in:
Emil J. Tywoniak 2024-12-11 15:35:43 +01:00
parent 0c689091e2
commit 4f3fdc8457
17 changed files with 595 additions and 523 deletions
Download patch file Download diff file Expand all files Collapse all files

91
kernel/register.cc
View file

@ -26,65 +26,6 @@
#include <stdio.h>
#include <errno.h>
#ifdef YOSYS_ENABLE_ZLIB
#include <zlib.h>
PRIVATE_NAMESPACE_BEGIN
#define GZ_BUFFER_SIZE 8192
void decompress_gzip(const std::string &filename, std::stringstream &out)
{
char buffer[GZ_BUFFER_SIZE];
int bytes_read;
gzFile gzf = gzopen(filename.c_str(), "rb");
while(!gzeof(gzf)) {
bytes_read = gzread(gzf, reinterpret_cast<void *>(buffer), GZ_BUFFER_SIZE);
out.write(buffer, bytes_read);
}
gzclose(gzf);
}
/*
An output stream that uses a stringbuf to buffer data internally,
using zlib to write gzip-compressed data every time the stream is flushed.
*/
class gzip_ostream : public std::ostream {
public:
gzip_ostream() : std::ostream(nullptr)
{
rdbuf(&outbuf);
}
bool open(const std::string &filename)
{
return outbuf.open(filename);
}
private:
class gzip_streambuf : public std::stringbuf {
public:
gzip_streambuf() { };
bool open(const std::string &filename)
{
gzf = gzopen(filename.c_str(), "wb");
return gzf != nullptr;
}
virtual int sync() override
{
gzwrite(gzf, reinterpret_cast<const void *>(str().c_str()), unsigned(str().size()));
str("");
return 0;
}
virtual ~gzip_streambuf()
{
sync();
gzclose(gzf);
}
private:
gzFile gzf = nullptr;
} outbuf;
};
PRIVATE_NAMESPACE_END
#endif
YOSYS_NAMESPACE_BEGIN
#define MAX_REG_COUNT 1000
@ -534,37 +475,7 @@ void Frontend::extra_args(std::istream *&f, std::string &filename, std::vector<s
delete ff;
ff = nullptr;
}
f = ff;
if (f != NULL) {
// Check for gzip magic
unsigned char magic[3];
int n = 0;
while (n < 3)
{
int c = ff->get();
if (c != EOF) {
magic[n] = (unsigned char) c;
}
n++;
}
if (n == 3 && magic[0] == 0x1f && magic[1] == 0x8b) {
#ifdef YOSYS_ENABLE_ZLIB
log("Found gzip magic in file `%s', decompressing using zlib.\n", filename.c_str());
if (magic[2] != 8)
log_cmd_error("gzip file `%s' uses unsupported compression type %02x\n",
filename.c_str(), unsigned(magic[2]));
delete ff;
std::stringstream *df = new std::stringstream();
decompress_gzip(filename, *df);
f = df;
#else
log_cmd_error("File `%s' is a gzip file, but Yosys is compiled without zlib.\n", filename.c_str());
#endif
} else {
ff->clear();
ff->seekg(0, std::ios::beg);
}
}
f = uncompressed(ff, filename);
}
if (f == NULL)
log_cmd_error("Can't open input file `%s' for reading: %s\n", filename.c_str(), strerror(errno));