krak/zstd
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Code Issues Releases 1 Activity

Merge pull request #10 from yhoogstrate/seekable_header_skip

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seekable_format no header when compressing empty string to stream
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daniellerozenblit 2022-12-12 17:58:58 -05:00 committed by GitHub
commit 6ad71a3f0b
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2 changed files with 31 additions and 1 deletions
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30
contrib/seekable_format/tests/seekable_tests.c
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@ -186,6 +186,36 @@ int main(int argc, const char** argv)
}
printf("Success!\n");
printf("Test %u - check ZSTD magic in compressing empty string: ", testNb++);
{ // compressing empty string should return a zstd header
char *data_in = (char *) malloc(255 * sizeof(char));
assert(data_in != NULL);
data_in = "\0";
char *data_out = (char *) malloc(255 * 255 * sizeof(char));
assert(data_out != NULL);
ZSTD_seekable_CStream *s = ZSTD_seekable_createCStream();
ZSTD_seekable_initCStream(s, 1, 1, 1024 * 1024);
ZSTD_inBuffer input = { data_in, 0, 0 };
ZSTD_outBuffer output = { data_out, 255*255, 0 };
ZSTD_seekable_compressStream(s, &output, &input);
ZSTD_seekable_endStream(s, &output);
if((((char*)output.dst)[0] != '\x28') | (((char*)output.dst)[1] != '\xb5') | (((char*)output.dst)[2] != '\x2f') | (((char*)output.dst)[3] != '\xfd')) {
printf("%#02x %#02x %#02x %#02x\n", ((char*)output.dst)[0], ((char*)output.dst)[1] , ((char*)output.dst)[2] , ((char*)output.dst)[3] );
ZSTD_seekable_freeCStream(s);
goto _test_error;
}
ZSTD_seekable_freeCStream(s);
}
printf("Success!\n");
/* TODO: Add more tests */
printf("Finished tests\n");
return 0;

2
contrib/seekable_format/zstdseek_compress.c
View File

@ -350,7 +350,7 @@ size_t ZSTD_seekable_writeSeekTable(ZSTD_frameLog* fl, ZSTD_outBuffer* output)
size_t ZSTD_seekable_endStream(ZSTD_seekable_CStream* zcs, ZSTD_outBuffer* output)
{
if (!zcs->writingSeekTable && zcs->frameDSize) {
if (!zcs->writingSeekTable) {
const size_t endFrame = ZSTD_seekable_endFrame(zcs, output);
if (ZSTD_isError(endFrame)) return endFrame;
/* return an accurate size hint */