mirror of https://github.com/electron/electron
113 lines
2.9 KiB
Python
Executable File
113 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python3
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from collections import OrderedDict
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import json
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import os
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import sys
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dir_path = os.path.dirname(os.path.realpath(__file__))
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SENTINEL = "dL7pKGdnNz796PbbjQWNKmHXBZaB9tsX"
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TEMPLATE_H = """
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#ifndef ELECTRON_FUSES_H_
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#define ELECTRON_FUSES_H_
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#if defined(WIN32)
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#define FUSE_EXPORT __declspec(dllexport)
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#else
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#define FUSE_EXPORT __attribute__((visibility("default")))
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#endif
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namespace electron::fuses {
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extern const volatile char kFuseWire[];
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{getters}
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} // namespace electron::fuses
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#endif // ELECTRON_FUSES_H_
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"""
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TEMPLATE_CC = """
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#include "electron/fuses.h"
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#include "base/dcheck_is_on.h"
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#if DCHECK_IS_ON()
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#include "base/command_line.h"
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#include "base/strings/string_util.h"
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#include <string>
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#endif
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namespace electron::fuses {
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const volatile char kFuseWire[] = { /* sentinel */ {sentinel}, /* fuse_version */ {fuse_version}, /* fuse_wire_length */ {fuse_wire_length}, /* fuse_wire */ {initial_config}};
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{getters}
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} // namespace electron:fuses
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"""
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with open(os.path.join(dir_path, "fuses.json5"), 'r') as f:
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fuse_defaults = json.loads(''.join(line for line in f.readlines() if not line.strip()[0] == "/"), object_pairs_hook=OrderedDict)
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fuse_version = fuse_defaults['_version']
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del fuse_defaults['_version']
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del fuse_defaults['_schema']
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del fuse_defaults['_comment']
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if fuse_version >= pow(2, 8):
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raise Exception("Fuse version can not exceed one byte in size")
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fuses = fuse_defaults.keys()
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initial_config = ""
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getters_h = ""
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getters_cc = ""
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index = len(SENTINEL) + 1
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for fuse in fuses:
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index += 1
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initial_config += fuse_defaults[fuse]
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name = ''.join(word.title() for word in fuse.split('_'))
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getters_h += "FUSE_EXPORT bool Is{name}Enabled();\n".replace("{name}", name)
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getters_cc += """
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bool Is{name}Enabled() {
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#if DCHECK_IS_ON()
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// RunAsNode is checked so early that base::CommandLine isn't yet
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// initialized, so guard here to avoid a CHECK.
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if (base::CommandLine::InitializedForCurrentProcess()) {
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base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
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if (command_line->HasSwitch("{switch_name}")) {
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std::string switch_value = command_line->GetSwitchValueASCII("{switch_name}");
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return switch_value == "1";
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}
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}
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#endif
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return kFuseWire[{index}] == '1';
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}
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""".replace("{name}", name).replace("{switch_name}", f"set-fuse-{fuse.lower()}").replace("{index}", str(index))
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def c_hex(n):
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s = hex(n)[2:]
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return "0x" + s.rjust(2, '0')
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def hex_arr(s):
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arr = []
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for char in s:
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arr.append(c_hex(ord(char)))
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return ",".join(arr)
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header = TEMPLATE_H.replace("{getters}", getters_h.strip())
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impl = TEMPLATE_CC.replace("{sentinel}", hex_arr(SENTINEL))
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impl = impl.replace("{fuse_version}", c_hex(fuse_version))
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impl = impl.replace("{fuse_wire_length}", c_hex(len(fuses)))
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impl = impl.replace("{initial_config}", hex_arr(initial_config))
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impl = impl.replace("{getters}", getters_cc.strip())
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with open(sys.argv[1], 'w') as f:
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f.write(header)
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with open(sys.argv[2], 'w') as f:
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f.write(impl)
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