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make-c-array [2017/12/06 11:18] (current)
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| | ====== make-c-array ====== |
| | This script prints binary data as an C array. This is useful for inserting binary blobs into source code. The script takes binary data in via stdin, and prints it out via stdout, so that it can work in a pipe. |
| | <code> |
| | #!/bin/bash |
| |
| | FILE=$1 |
| | NAME=$2 |
| | |
| | echo "const unsigned char $NAME[] = {" |
| | od -v -w8 -tx1 $FILE | cut -c8- | \ |
| | sed \ |
| | -e"s/ / 0x/g" \ |
| | -e"s/ 0x/, 0x/g" \ |
| | -e"s/^, \(.*\)/ \1/" \ |
| | -e"$ d" | |
| | sed -e"$ !s/.*/&,/" |
| | echo "};" |
| | </code> |
| | ===Usage=== |
| | ==File Input== |
| | To print a file: |
| | <code> |
| | $ make-c-array in.bin Test > out.c |
| | </code> |
| | Where in.bin is the binary input file, Test is the name of the array, and out is the name of the C file to output to: |
| | <code c> |
| | const unsigned char Test[] = { |
| | 0xff, 0xd8, 0xff, 0xe0, 0x00, 0x10, 0x4a, 0x46, |
| | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| | 0x00, 0x00, 0x00, 0x03, 0xff, 0xc4, 0x00, 0x14, |
| | 0x00, 0x00, 0xff, 0xda, 0x00, 0x08, 0x01, 0x01, |
| | 0x00, 0x00, 0x3f, 0x00, 0x37, 0xff, 0xd9 |
| | }; |
| | </code> |
| | ==Pipe Input== |
| | make-c-array can also take an input from stdin: |
| | <code> |
| | $ echo "Binary Test Data" | make-c-array - Hello > out.c |
| | </code> |
| | Result: |
| | <code c> |
| | const unsigned char Test[] = { |
| | 0x42, 0x69, 0x6e, 0x61, 0x72, 0x79, 0x20, 0x54, |
| | 0x65, 0x73, 0x74, 0x20, 0x44, 0x61, 0x74, 0x61, |
| | 0x0a |
| | }; |
| | </code> |