mirror of
https://github.com/zerotier/ZeroTierOne.git
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58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/**
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Converts input from stdin into an array of binary data for use in C.
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License: Public Domain
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Usage: app VariableName < input > output.c
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*/
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#include <stdint.h> /* uintXX_t */
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#include <inttypes.h> /* PRIuXX macros */
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#include <stdio.h>
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static char const * appName = 0;
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static void usage()
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{
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printf("Usage: %s OBJECT_NAME < input > output.c\n\n", appName );
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}
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int main( int argc, char const ** argv )
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{
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appName = argv[0];
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if( (argc != 2) || (argv[1][0] == '-') )
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{
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usage();
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return 1;
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}
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char const * varname = argv[1];
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enum { bufSize = 1024 * 8 };
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unsigned char buf[bufSize];
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size_t rd = 0;
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size_t i = 0;
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size_t flip = 0;
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printf( "static unsigned char %s[] = {\n\t", varname);
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uint32_t size = 0;
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while( 0 != (rd = fread( buf, 1, bufSize, stdin ) ) )
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{
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size += rd;
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for(i = 0; i < rd; ++i )
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{
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printf( "0x%02x", buf[i] );
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if( !( (rd < bufSize) && (i == rd-1)) ) putchar(',');
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if( 16 == ++flip )
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{
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flip = 0;
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printf("\n\t");
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}
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else putchar(' ');
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}
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}
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printf("\n};\n");
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printf("#define %s_LEN %llu\n",varname,(unsigned long long)size);
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//printf( "enum { %s_length = %"PRIu32"%s }; ", varname, size,"UL");
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//printf("enum { %s_length = sizeof(%s) };\n", varname, varname );
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return 0;
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}
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