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#!/usr/bin/env python
import sys, re, os, errno
input_file = sys.argv[1]
output_file = sys.argv[2]
def mkdir_p(path):
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else: raise
shader_name, shader_type, extension = os.path.basename(input_file).split('.')
with open(input_file, "r") as f:
data = f.read()
content = """// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.
#ifndef MBGL_SHADER_{NAME}_{TYPE}
#define MBGL_SHADER_{NAME}_{TYPE}
#include <mbgl/gl/gl.hpp>
namespace mbgl {{
namespace shaders {{
namespace {name} {{
#ifdef GL_ES_VERSION_2_0
constexpr const char* {type} = R"MBGL_SHADER(precision highp float;\n{data})MBGL_SHADER";
#else
constexpr const char* {type} = R"MBGL_SHADER(#version 120\n{data})MBGL_SHADER";
#endif
}} // namespace {name}
}} // namespace shaders
}} // namespace mbgl
#endif
""".format(
name = shader_name,
NAME = shader_name.upper(),
type = shader_type,
TYPE = shader_type.upper(),
data = data,
)
mkdir_p(os.path.dirname(output_file))
with open(output_file, 'w') as f: f.write(content)
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