lib/memzip: Factor out memzip from teensy/ into lib/memzip.

1 files changed, 83 insertions, 0 deletions

diff --git a/lib/memzip/memzip.h b/lib/memzip/memzip.h
new file mode 100644
index 0000000000..667e2df7e1
--- /dev/null
+++ b/lib/memzip/memzip.h
@@ -0,0 +1,83 @@
+#pragma pack(push, 1)
+
+#define MEMZIP_FILE_HEADER_SIGNATURE 0x04034b50
+typedef struct
+{
+    uint32_t    signature;
+    uint16_t    version;
+    uint16_t    flags;
+    uint16_t    compression_method;
+    uint16_t    last_mod_time;
+    uint16_t    last_mod_date;
+    uint32_t    crc32;
+    uint32_t    compressed_size;
+    uint32_t    uncompressed_size;
+    uint16_t    filename_len;
+    uint16_t    extra_len;
+
+    /* char     filename[filename_len]  */
+    /* uint8_t  extra[extra_len]        */
+
+} MEMZIP_FILE_HDR;
+
+#define MEMZIP_CENTRAL_DIRECTORY_SIGNATURE 0x02014b50
+typedef struct
+{
+    uint32_t    signature;
+    uint16_t    version_made_by;
+    uint16_t    version_read_with;
+    uint16_t    flags;
+    uint16_t    compression_method;
+    uint16_t    last_mod_time;
+    uint16_t    last_mod_date;
+    uint32_t    crc32;
+    uint32_t    compressed_size;
+    uint32_t    uncompressed_size;
+    uint16_t    filename_len;
+    uint16_t    extra_len;
+    uint16_t    disk_num;
+    uint16_t    internal_file_attributes;
+    uint32_t    external_file_attributes;
+    uint32_t    file_header_offset;
+
+    /* char     filename[filename_len]  */
+    /* uint8_t  extra[extra_len]        */
+
+} MEMZIP_CENTRAL_DIRECTORY_HDR;
+
+#define MEMZIP_END_OF_CENTRAL_DIRECTORY_SIGNATURE 0x06054b50
+typedef struct
+{
+    uint32_t    signature;
+    uint16_t    disk_num;
+    uint16_t    central_directory_disk;
+    uint16_t    num_central_directories_this_disk;
+    uint16_t    total_central_directories;
+    uint32_t    central_directory_size;
+    uint32_t    central_directory_offset;
+    uint16_t    comment_len;
+
+    /* char     comment[comment_len]    */
+
+} MEMZIP_END_OF_CENTRAL_DIRECTORY;
+
+#pragma pack(pop)
+
+typedef enum {
+    MZ_OK = 0,          /* (0) Succeeded */
+    MZ_NO_FILE,         /* (1) Could not find the file. */
+    MZ_FILE_COMPRESSED, /* (2) File is compressed (expecting uncompressed) */
+
+} MEMZIP_RESULT;
+
+typedef struct {
+    uint32_t    file_size;
+    uint16_t    last_mod_date;
+    uint16_t    last_mod_time;
+    uint8_t     is_dir;
+
+} MEMZIP_FILE_INFO;
+
+MEMZIP_RESULT memzip_locate(const char *filename, void **data, size_t *len);
+
+MEMZIP_RESULT memzip_stat(const char *path, MEMZIP_FILE_INFO *info);