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Merge pull request #1226 from YosysHQ/dave/gzip

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Add support for gzip'd input files
This commit is contained in:
David Shah 2019-07-27 07:40:38 +01:00 • committed by GitHub
commit 6538671c84
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8 changed files with 70 additions and 13 deletions
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40
kernel/register.cc
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@ -25,6 +25,26 @@
#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);
}
PRIVATE_NAMESPACE_END
#endif
YOSYS_NAMESPACE_BEGIN
#define MAX_REG_COUNT 1000
@ -436,6 +456,26 @@ void Frontend::extra_args(std::istream *&f, std::string &filename, std::vector<s
delete ff;
else
f = ff;
// Check for gzip magic
unsigned char magic[3];
int n = readsome(*ff, reinterpret_cast<char*>(magic), 3);
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);
}
}
if (f == NULL)
log_cmd_error("Can't open input file `%s' for reading: %s\n", filename.c_str(), strerror(errno));

21
kernel/yosys.cc
View file

@ -894,23 +894,26 @@ void run_frontend(std::string filename, std::string command, std::string *backen
design = yosys_design;
if (command == "auto") {
if (filename.size() > 2 && filename.substr(filename.size()-2) == ".v")
std::string filename_trim = filename;
if (filename_trim.size() > 3 && filename_trim.substr(filename_trim.size()-3) == ".gz")
filename_trim.erase(filename_trim.size()-3);
if (filename_trim.size() > 2 && filename_trim.substr(filename_trim.size()-2) == ".v")
command = "verilog";
else if (filename.size() > 2 && filename.substr(filename.size()-3) == ".sv")
else if (filename_trim.size() > 2 && filename_trim.substr(filename_trim.size()-3) == ".sv")
command = "verilog -sv";
else if (filename.size() > 3 && filename.substr(filename.size()-4) == ".vhd")
else if (filename_trim.size() > 3 && filename_trim.substr(filename_trim.size()-4) == ".vhd")
command = "vhdl";
else if (filename.size() > 4 && filename.substr(filename.size()-5) == ".blif")
else if (filename_trim.size() > 4 && filename_trim.substr(filename_trim.size()-5) == ".blif")
command = "blif";
else if (filename.size() > 5 && filename.substr(filename.size()-6) == ".eblif")
else if (filename_trim.size() > 5 && filename_trim.substr(filename_trim.size()-6) == ".eblif")
command = "blif";
else if (filename.size() > 4 && filename.substr(filename.size()-5) == ".json")
else if (filename_trim.size() > 4 && filename_trim.substr(filename_trim.size()-5) == ".json")
command = "json";
else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".il")
else if (filename_trim.size() > 3 && filename_trim.substr(filename_trim.size()-3) == ".il")
command = "ilang";
else if (filename.size() > 3 && filename.substr(filename.size()-3) == ".ys")
else if (filename_trim.size() > 3 && filename_trim.substr(filename_trim.size()-3) == ".ys")
command = "script";
else if (filename.size() > 3 && filename.substr(filename.size()-4) == ".tcl")
else if (filename_trim.size() > 3 && filename_trim.substr(filename_trim.size()-4) == ".tcl")
command = "tcl";
else if (filename == "-")
command = "script";