55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
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#include "../src/hammer.h"
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const HParser* document = NULL;
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void init_parser(void)
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{
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// CORE
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const HParser *digit = h_ch_range(0x30, 0x39);
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const HParser *alpha = h_choice(h_ch_range(0x41, 0x5a), h_ch_range(0x61, 0x7a), NULL);
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// AUX.
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const HParser *plus = h_ch('+');
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const HParser *slash = h_ch('/');
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const HParser *equals = h_ch('=');
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const HParser *bsfdig = h_choice(alpha, digit, plus, slash, NULL);
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const HParser *bsfdig_4bit = h_choice(
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h_ch('A'), h_ch('E'), h_ch('I'), h_ch('M'), h_ch('Q'), h_ch('U'),
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h_ch('Y'), h_ch('c'), h_ch('g'), h_ch('k'), h_ch('o'), h_ch('s'),
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h_ch('w'), h_ch('0'), h_ch('4'), h_ch('8'), NULL);
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const HParser *bsfdig_2bit = h_choice(h_ch('A'), h_ch('Q'), h_ch('g'), h_ch('w'), NULL);
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const HParser *base64_2 = h_sequence(bsfdig, bsfdig, bsfdig_4bit, equals, NULL);
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const HParser *base64_1 = h_sequence(bsfdig, bsfdig_2bit, equals, equals, NULL);
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const HParser *base64 = h_choice(base64_2, base64_1, NULL);
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// why does this parse "A=="?!
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// why does this parse "aaA=" but not "aA=="?!
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document = base64;
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}
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#include <stdio.h>
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int main(int argc, char **argv)
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{
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uint8_t input[102400];
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size_t inputsize;
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const HParseResult *result;
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init_parser();
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inputsize = fread(input, 1, sizeof(input), stdin);
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fprintf(stderr, "inputsize=%lu\ninput=", inputsize);
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fwrite(input, 1, inputsize, stderr);
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result = h_parse(document, input, inputsize);
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if(result) {
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fprintf(stderr, "parsed=%lld bytes\n", result->bit_length/8);
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h_pprint(stdout, result->ast, 0, 0);
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return 0;
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} else {
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return 1;
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}
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}
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