38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "memzip.h"
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extern uint8_t _staticfs[];
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MEMZIP_RESULT memzip_locate(const char *filename, void **data, size_t *len)
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{
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const MEMZIP_FILE_HDR *file_hdr = (const MEMZIP_FILE_HDR *)_staticfs;
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uint8_t *mem_data;
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/* Zip file filenames don't have a leading /, so we strip it off */
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if (*filename == '/') {
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filename++;
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}
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while (file_hdr->signature == MEMZIP_FILE_HEADER_SIGNATURE) {
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const char *file_hdr_filename = (const char *)&file_hdr[1];
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mem_data = (uint8_t *)file_hdr_filename;
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mem_data += file_hdr->filename_len;
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mem_data += file_hdr->extra_len;
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if (!strncmp(file_hdr_filename, filename, file_hdr->filename_len)) {
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/* We found a match */
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if (file_hdr->compression_method != 0) {
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return MZ_FILE_COMPRESSED;
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}
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*data = mem_data;
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*len = file_hdr->uncompressed_size;
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return MZ_OK;
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}
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mem_data += file_hdr->uncompressed_size;
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file_hdr = (const MEMZIP_FILE_HDR *)mem_data;
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}
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return MZ_NO_FILE;
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}
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