52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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#include <stdio.h>
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#include <errno.h>
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// Writes a public constant value to the desired file.
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void write_constant(FILE* file, const char* name,
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const char* type, const int val)
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{
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fprintf(file, "pub const %s: %s = %d;\n", name, type, val);
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}
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// Writes the header of the errno file.
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void write_file_header(FILE* file)
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{
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fprintf(file, "// This was generated by a build script to obtain\n");
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fprintf(file, "// the correct values of C preprocessor values to\n");
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fprintf(file, "// be used as errno constant values.\n");
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}
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int main(int argc, char *argv[])
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{
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char* filename;
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FILE* output_file;
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// This requires a filename to be given for writing to.
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if (argc == 2)
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{
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filename = argv[1];
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}
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else if (argc > 2 || argc < 2)
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{
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printf("\nThis program requires a filename be given.\n\n");
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return 1;
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}
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// Open a file for writing.
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output_file = fopen(filename, "w");
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// Write the errno file header.
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write_file_header(output_file);
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// Write the errno constants we are trying to capture.
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write_constant(output_file, "EDOM", "CInt", EDOM);
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write_constant(output_file, "ERANGE", "CInt", ERANGE);
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write_constant(output_file, "EILSEQ", "CInt", EILSEQ);
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// Close the file.
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fclose(output_file);
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return 0;
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}
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