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diff --git a/Build/source/libs/zziplib/zziplib-0.13.58/docs/zzipfseeko.html b/Build/source/libs/zziplib/zziplib-0.13.58/docs/zzipfseeko.html new file mode 100644 index 00000000000..b9a9c93a4a9 --- /dev/null +++ b/Build/source/libs/zziplib/zziplib-0.13.58/docs/zzipfseeko.html @@ -0,0 +1,176 @@ +<html><head><title>zziplib Library Functions</title> +</head><body> +<h2>zziplib Library Functions</h2><p>Version 0.13.58</p><p><big><b><code>#include <zzip/fseeko.h></code></b></big></p><table width="100%"><tr><td valign="top"><code><b><code><a href="#zzip_entry_fopen">zzip_entry_fopen</a></code></b>(ZZIP_ENTRY * entry, int takeover) + : zzip__new__ ZZIP_ENTRY_FILE * +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_ffile">zzip_entry_ffile</a></code></b>(FILE * disk, char *filename) + : zzip__new__ ZZIP_ENTRY_FILE * +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_fread">zzip_entry_fread</a></code></b>(void *ptr, zzip_size_t sized, zzip_size_t nmemb, + ZZIP_ENTRY_FILE * file) + : zzip_size_t +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_fclose">zzip_entry_fclose</a></code></b>(ZZIP_ENTRY_FILE * file) + : int +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_feof">zzip_entry_feof</a></code></b>(ZZIP_ENTRY_FILE * file) + : int +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_data_offset">zzip_entry_data_offset</a></code></b>(ZZIP_ENTRY * entry) + : zzip_off_t +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_fread_file_header">zzip_entry_fread_file_header</a></code></b>(ZZIP_ENTRY * entry, + struct zzip_file_header *file_header) + : static zzip_off_t +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_strdup_name">zzip_entry_strdup_name</a></code></b>(ZZIP_ENTRY * entry) + : zzip__new__ char * +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_findfile">zzip_entry_findfile</a></code></b>(FILE * disk, char *filename, + ZZIP_ENTRY * _zzip_restrict entry, zzip_strcmp_fn_t compare) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_findfirst">zzip_entry_findfirst</a></code></b>(FILE * disk) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_findnext">zzip_entry_findnext</a></code></b>(ZZIP_ENTRY * _zzip_restrict entry) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_free">zzip_entry_free</a></code></b>(ZZIP_ENTRY * entry) + : int +</code></td></tr><tr><td valign="top"><code><b><code><a href="#zzip_entry_findmatch">zzip_entry_findmatch</a></code></b>(FILE * disk, char *filespec, + ZZIP_ENTRY * _zzip_restrict entry, + zzip_fnmatch_fn_t compare, int flags) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr></table><h3>Documentation</h3><dl><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"><tr><td valign="top"><code><b><a name="zzip_entry_fopen">zzip_entry_fopen</a></b>(ZZIP_ENTRY * entry, int takeover) + : zzip__new__ ZZIP_ENTRY_FILE * +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_ffile">zzip_entry_ffile</a></b>(FILE * disk, char *filename) + : zzip__new__ ZZIP_ENTRY_FILE * +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_fread">zzip_entry_fread</a></b>(void *ptr, zzip_size_t sized, zzip_size_t nmemb, + ZZIP_ENTRY_FILE * file) + : zzip_size_t +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_fclose">zzip_entry_fclose</a></b>(ZZIP_ENTRY_FILE * file) + : int +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_feof">zzip_entry_feof</a></b>(ZZIP_ENTRY_FILE * file) + : int +</code></td></tr></table></dt><dd><table width="100%"><tr><td valign="top"><table border="0" width="100%" cellpadding="0" cellspacing="0"><td> <em> open a file within a zip disk for reading</em> </td><td align="right"> <em><small>/vol/8/src/cvs/workspace/zzip-0/zzip/fseeko.c</small></em></td></table><p> + The <code>zzip_entry_fopen</code> function does take an "entry" argument and copies it (or just takes + it over as owner) to a new ZZIP_ENTRY_FILE handle structure. That + structure contains also a zlib buffer for decoding. The <code>zzip_entry_fopen</code> function does + seek to the file_header of the given "entry" and validates it for the + data buffer following it. We do also prefetch some data from the data + buffer thereby trying to match the disk pagesize for faster access later. + The <code><a href="#zzip_entry_fread">zzip_entry_fread</a></code> will then read in chunks of pagesizes which is + the size of the internal readahead buffer. If an error occurs then null + is returned. +</p> +</td></tr><tr><td valign="top"><p> + The <code>zzip_entry_ffile</code> function opens a file found by name, so it does a search into + the zip central directory with <code><a href="#zzip_entry_findfile">zzip_entry_findfile</a></code> and whatever + is found first is given to <code><a href="#zzip_entry_fopen">zzip_entry_fopen</a></code> +</p> +</td></tr><tr><td valign="top"><p> + The <code>zzip_entry_fread</code> function reads more bytes into the output buffer specified as + arguments. The return value is null on eof or error, the stdio-like + interface can not distinguish between these so you need to check + with <code><a href="#zzip_entry_feof">zzip_entry_feof</a></code> for the difference. +</p> +</td></tr><tr><td valign="top"><p> The <code>zzip_entry_fclose</code> function releases any zlib decoder info needed for decompression + and dumps the ZZIP_ENTRY_FILE struct then. +</p> +</td></tr><tr><td valign="top"><p> + The <code>zzip_entry_feof</code> function allows to distinguish an error from an eof condition. + Actually, if we found an error but we did already reach eof then we + just keep on saying that it was an eof, so the app can just continue. +</p> +</td></tr></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"><tr><td valign="top"><code><b><a name="zzip_entry_data_offset">zzip_entry_data_offset</a></b>(ZZIP_ENTRY * entry) + : zzip_off_t +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_fread_file_header">zzip_entry_fread_file_header</a></b>(ZZIP_ENTRY * entry, + struct zzip_file_header *file_header) + : static zzip_off_t +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_strdup_name">zzip_entry_strdup_name</a></b>(ZZIP_ENTRY * entry) + : zzip__new__ char * +</code></td></tr></table></dt><dd><table width="100%"><tr><td valign="top"><table border="0" width="100%" cellpadding="0" cellspacing="0"><td> <em> helper functions for (fseeko) zip access api</em> </td><td align="right"> <em><small>/vol/8/src/cvs/workspace/zzip-0/zzip/fseeko.c</small></em></td></table><p> + The <code>zzip_entry_data_offset</code> functions returns the seekval offset of the data portion of the + file referenced by the given zzip_entry. It requires an intermediate + check of the file_header structure (i.e. it reads it from disk). After + this call, the contained diskfile readposition is already set to the + data_offset returned here. On error -1 is returned. +</p> +</td></tr><tr><td valign="top"><p> The <code>zzip_entry_fread_file_header</code> functions read the correspoding struct zzip_file_header from + the zip disk of the given "entry". The returned off_t points to the + end of the file_header where the current fseek pointer has stopped. + This is used to immediatly parse out any filename/extras block following + the file_header. The return value is null on error. +</p> +</td></tr><tr><td valign="top"><p> The <code>zzip_entry_strdup_name</code> function is a big helper despite its little name: in a zip file the + encoded filenames are usually NOT zero-terminated but for common usage + with libc we need it that way. Secondly, the filename SHOULD be present + in the zip central directory but if not then we fallback to the filename + given in the file_header of each compressed data portion. +</p> +</td></tr></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"><tr><td valign="top"><code><b><a name="zzip_entry_findfile">zzip_entry_findfile</a></b>(FILE * disk, char *filename, + ZZIP_ENTRY * _zzip_restrict entry, zzip_strcmp_fn_t compare) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_findfirst">zzip_entry_findfirst</a></b>(FILE * disk) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_findnext">zzip_entry_findnext</a></b>(ZZIP_ENTRY * _zzip_restrict entry) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_free">zzip_entry_free</a></b>(ZZIP_ENTRY * entry) + : int +</code></td></tr><tr><td valign="top"><code><b><a name="zzip_entry_findmatch">zzip_entry_findmatch</a></b>(FILE * disk, char *filespec, + ZZIP_ENTRY * _zzip_restrict entry, + zzip_fnmatch_fn_t compare, int flags) + : zzip__new__ ZZIP_ENTRY * +</code></td></tr></table></dt><dd><table width="100%"><tr><td valign="top"><table border="0" width="100%" cellpadding="0" cellspacing="0"><td> <em> search for files in the (fseeko) zip central directory</em> </td><td align="right"> <em><small>/vol/8/src/cvs/workspace/zzip-0/zzip/fseeko.c</small></em></td></table><p> + The <code>zzip_entry_findfile</code> function is given a filename as an additional argument, to find the + disk_entry matching a given filename. The compare-function is usually + strcmp or strcasecmp or perhaps strcoll, if null then strcmp is used. + - use null as argument for "old"-entry when searching the first + matching entry, otherwise the last returned value if you look for other + entries with a special "compare" function (if null then a doubled search + is rather useless with this variant of _findfile). If no further entry is + found then null is returned and any "old"-entry gets already free()d. +</p> +</td></tr><tr><td valign="top"><p> + The <code>zzip_entry_findfirst</code> function is the first call of all the zip access functions here. + It contains the code to find the first entry of the zip central directory. + Here we require the stdio handle to represent a real zip file where the + disk_trailer is _last_ in the file area, so that its position would be at + a fixed offset from the end of the file area if not for the comment field + allowed to be of variable length (which needs us to do a little search + for the disk_tailer). However, in this simple implementation we disregard + any disk_trailer info telling about multidisk archives, so we just return + a pointer to the first entry in the zip central directory of that file. +</p><p> + For an actual means, we are going to search backwards from the end + of the mmaped block looking for the PK-magic signature of a + disk_trailer. If we see one then we check the rootseek value to + find the first disk_entry of the root central directory. If we find + the correct PK-magic signature of a disk_entry over there then we + assume we are done and we are going to return a pointer to that label. +</p><p> + The return value is a pointer to the first zzip_disk_entry being checked + to be within the bounds of the file area specified by the arguments. If + no disk_trailer was found then null is returned, and likewise we only + accept a disk_trailer with a seekvalue that points to a disk_entry and + both parts have valid PK-magic parts. Beyond some sanity check we try to + catch a common brokeness with zip archives that still allows us to find + the start of the zip central directory. +</p> +</td></tr><tr><td valign="top"><p> + The <code>zzip_entry_findnext</code> function takes an existing "entry" in the central root directory + (e.g. from zzip_entry_findfirst) and moves it to point to the next entry. + On error it returns 0, otherwise the old entry. If no further match is + found then null is returned and the entry already free()d. If you want + to stop searching for matches before that case then please call + <code><a href="#zzip_entry_free">zzip_entry_free</a></code> on the cursor struct ZZIP_ENTRY. +</p> +</td></tr><tr><td valign="top"><p> the <code>zzip_entry_free</code> function releases the malloc()ed areas needed for zzip_entry, the + pointer is invalid afterwards. The <code>zzip_entry_free</code> function has #define synonyms of + zzip_entry_findlast(), zzip_entry_findlastfile(), zzip_entry_findlastmatch() +</p> +</td></tr><tr><td valign="top"><p> + The <code>zzip_entry_findmatch</code> function uses a compare-function with an additional argument + and it is called just like fnmatch(3) from POSIX.2 AD:1993), i.e. + the argument filespec first and the ziplocal filename second with + the integer-flags put in as third to the indirect call. If the + platform has fnmatch available then null-compare will use that one + and otherwise we fall back to mere strcmp, so if you need fnmatch + searching then please provide an implementation somewhere else. + - use null as argument for "after"-entry when searching the first + matching entry, or the last disk_entry return-value to find the + next entry matching the given filespec. If no further entry is + found then null is returned and any "old"-entry gets already free()d. +</p> +</td></tr></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd><dt><table width="100%"></table></dt><dd><table width="100%"></table></dd></dl> +</body></html> |