85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
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/**
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* `b64.h' - b64
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*
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* copyright (c) 2014 joseph werle
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*/
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#ifndef B64_H
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#define B64_H 1
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typedef struct b64_buffer {
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char * ptr;
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int bufc;
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} b64_buffer_t;
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/**
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* Memory allocation functions to use. You can define b64_malloc and
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* b64_realloc to custom functions if you want.
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*/
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#ifndef b64_malloc
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# define b64_malloc(ptr) malloc(ptr)
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#endif
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#ifndef b64_realloc
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# define b64_realloc(ptr, size) realloc(ptr, size)
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#endif
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// How much memory to allocate per buffer
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#define B64_BUFFER_SIZE (1024 * 64) // 64K
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// Start buffered memory
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int b64_buf_malloc(b64_buffer_t * buffer);
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// Update memory size. Returns the same pointer if we
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// have enough space in the buffer. Otherwise, we add
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// additional buffers.
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int b64_buf_realloc(b64_buffer_t * buffer, size_t size);
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/**
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* Base64 index table.
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*/
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static const char b64_table[] = {
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
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'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
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'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
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'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
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'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
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'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
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'w', 'x', 'y', 'z', '0', '1', '2', '3',
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'4', '5', '6', '7', '8', '9', '+', '/'
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Encode `unsigned char *' source with `size_t' size.
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* Returns a `char *' base64 encoded string.
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*/
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char *
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b64_encode (const unsigned char *, size_t);
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/**
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* Decode `char *' source with `size_t' size.
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* Returns a `unsigned char *' base64 decoded string.
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*/
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unsigned char *
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b64_decode (const char *, size_t);
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/**
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* Decode `char *' source with `size_t' size.
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* Returns a `unsigned char *' base64 decoded string + size of decoded string.
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*/
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unsigned char *
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b64_decode_ex (const char *, size_t, size_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif
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