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-rw-r--r--Build/source/libs/zziplib/zziplib-0.13.58/zzip/dir.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/Build/source/libs/zziplib/zziplib-0.13.58/zzip/dir.c b/Build/source/libs/zziplib/zziplib-0.13.58/zzip/dir.c
new file mode 100644
index 00000000000..a84a130486a
--- /dev/null
+++ b/Build/source/libs/zziplib/zziplib-0.13.58/zzip/dir.c
@@ -0,0 +1,296 @@
+/*
+ * Author:
+ * Guido Draheim <guidod@gmx.de>
+ *
+ * Copyright (c) 1999,2000,2001,2002,2003 Guido Draheim
+ * All rights reserved,
+ * use under the restrictions of the
+ * Lesser GNU General Public License
+ * or alternatively the restrictions
+ * of the Mozilla Public License 1.1
+ */
+
+#include <zzip/lib.h> /* exported... */
+#include <zzip/file.h>
+#include <stddef.h> /*offsetof*/
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#ifdef ZZIP_HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#else
+#include <stdio.h>
+#endif
+
+#include <zzip/__dirent.h>
+
+#ifndef offsetof
+#pragma warning had to DEFINE offsetof as it was not in stddef.h
+#define offsetof(T,M) ((unsigned)(& ((T*)0)->M))
+#endif
+
+#ifdef ZZIP_HAVE_SYS_STAT_H
+/* MSVC does have IFbitmask but not the corresponding IStests */
+# if !defined S_ISDIR && defined S_IFDIR
+# define S_ISDIR(_X_) ((_X_) & S_IFDIR)
+# endif
+# if !defined S_ISREG && defined S_IFREG
+# define S_ISREG(_X_) ((_X_) & S_IFREG)
+# endif
+#endif
+
+/**
+ * This function is the equivalent of a => rewinddir(2) for a realdir or
+ * the zipfile in place of a directory. The ZZIP_DIR handle returned from
+ * => zzip_opendir has a flag saying realdir or zipfile. As for a zipfile,
+ * the filenames will include the filesubpath, so take care.
+ */
+void
+zzip_rewinddir(ZZIP_DIR * dir)
+{
+ if (! dir) return;
+
+ if (USE_DIRENT && dir->realdir)
+ {
+ _zzip_rewinddir(dir->realdir);
+ return;
+ }
+
+ if (dir->hdr0)
+ dir->hdr = dir->hdr0;
+ else
+ dir->hdr = 0;
+}
+
+#if ! USE_DIRENT
+#define real_readdir(_X_) 1
+#else
+static int
+real_readdir(ZZIP_DIR* dir)
+{
+ struct stat st = { 0 };
+ char filename[PATH_MAX];
+ struct dirent* dirent = _zzip_readdir(dir->realdir);
+ if (! dirent) return 0;
+
+ dir->dirent.d_name = dirent->d_name;
+ strcpy(filename, dir->realname);
+ strcat(filename, "/");
+ strcat(filename, dirent->d_name);
+
+ if (stat(filename, &st) == -1)
+ return -1;
+
+ dir->dirent.d_csize = dir->dirent.st_size = st.st_size;
+
+ if (st.st_mode)
+ {
+ if (! S_ISREG(st.st_mode))
+ {
+ dir->dirent.d_compr = st.st_mode;
+ dir->dirent.d_compr |= 0x80000000;
+ /* makes it effectively negative,
+ * but can still be fed to S_ISXXX(x) */
+ }else
+ {
+ dir->dirent.d_compr = 0; /* stored */
+ }
+ }else
+ {
+ dir->dirent.d_compr = 0; /* stored */
+ }
+
+ return 1;
+}
+#endif
+
+/**
+ * This function is the equivalent of a => readdir(2) for a realdir
+ * or a zipfile referenced by the ZZIP_DIR returned from => zzip_opendir.
+ *
+ * The ZZIP_DIR handle (as returned by => zzip_opendir) contains a few more
+ * entries than being copied into the ZZIP_DIRENT. The only valid fields in
+ * a ZZIP_DIRENT are d_name (the file name), d_compr (compression), d_csize
+ * (compressed size), st_size (uncompressed size).
+ */
+ZZIP_DIRENT*
+zzip_readdir(ZZIP_DIR * dir)
+{
+ if (! dir) { errno=EBADF; return 0; }
+
+ if (USE_DIRENT && dir->realdir)
+ {
+ if (! real_readdir(dir))
+ return 0;
+ }else
+ {
+ if (! dir->hdr) return 0;
+
+ dir->dirent.d_name = dir->hdr->d_name;
+ dir->dirent.d_compr = dir->hdr->d_compr;
+
+ dir->dirent.d_csize = dir->hdr->d_csize;
+ dir->dirent.st_size = dir->hdr->d_usize;
+
+ if (! dir->hdr->d_reclen) dir->hdr = 0;
+ else dir->hdr = (struct zzip_dir_hdr *)
+ ((char *)dir->hdr + dir->hdr->d_reclen);
+ }
+ return &dir->dirent;
+}
+
+/** => zzip_rewinddir
+ * This function is the equivalent of => telldir(2) for a realdir or zipfile.
+ */
+zzip_off_t
+zzip_telldir(ZZIP_DIR* dir)
+{
+ if (! dir) { errno=EBADF; return -1; }
+
+ if (USE_DIRENT && dir->realdir)
+ {
+ return _zzip_telldir(dir->realdir);
+ }else
+ {
+ return ((zzip_off_t) ((char*) dir->hdr - (char*) dir->hdr0));
+ }
+}
+
+/** => zzip_rewinddir
+ * This function is the equivalent of => seekdir(2) for a realdir or zipfile.
+ */
+void
+zzip_seekdir(ZZIP_DIR* dir, zzip_off_t offset)
+{
+ if (! dir) return;
+
+ if (USE_DIRENT && dir->realdir)
+ {
+ _zzip_seekdir(dir->realdir, offset);
+ }else
+ {
+ dir->hdr = (struct zzip_dir_hdr*)
+ (dir->hdr0 ? (char*) dir->hdr0 + (size_t) offset : 0);
+ }
+}
+
+#if defined ZZIP_LARGEFILE_RENAME && defined EOVERFLOW && defined PIC
+#undef zzip_seekdir /* zzip_seekdir64 */
+#undef zzip_telldir /* zzip_telldir64 */
+
+long zzip_telldir(ZZIP_DIR* dir);
+void zzip_seekdir(ZZIP_DIR* dir, long offset);
+
+/* DLL compatibility layer - so that 32bit code can link with this lib too */
+
+long zzip_telldir(ZZIP_DIR* dir)
+{
+ off_t off = zzip_telldir64 (dir);
+ long offs = off;
+ if (offs != off) { errno = EOVERFLOW; return -1; }
+ return offs;
+}
+
+void zzip_seekdir(ZZIP_DIR* dir, long offset)
+{
+ zzip_seekdir64 (dir, offset);
+}
+#endif
+
+/**
+ * This function is the equivalent of => opendir(3) for a realdir or zipfile.
+ *
+ * This function has some magic - if the given argument-path
+ * is a directory, it will wrap a real => opendir(3) into the ZZIP_DIR
+ * structure. Otherwise it will divert to => zzip_dir_open which
+ * can also attach a ".zip" extension if needed to find the archive.
+ *
+ * the error-code is mapped to => errno(3).
+ */
+ZZIP_DIR*
+zzip_opendir(zzip_char_t* filename)
+{
+ return zzip_opendir_ext_io (filename, 0, 0, 0);
+}
+
+/** => zzip_opendir
+ * This function uses explicit ext and io instead of the internal
+ * defaults, setting them to zero is equivalent to => zzip_opendir
+ */
+ZZIP_DIR*
+zzip_opendir_ext_io(zzip_char_t* filename, int o_modes,
+ zzip_strings_t* ext, zzip_plugin_io_t io)
+{
+ zzip_error_t e;
+ ZZIP_DIR* dir;
+
+# ifdef ZZIP_HAVE_SYS_STAT_H
+ struct stat st;
+# endif
+
+ if (o_modes & (ZZIP_PREFERZIP|ZZIP_ONLYZIP)) goto try_zzip;
+ try_real:
+
+# ifdef ZZIP_HAVE_SYS_STAT_H
+ if (stat(filename, &st) >= 0 && S_ISDIR(st.st_mode)
+ ){
+ if (USE_DIRENT)
+ {
+ _zzip_DIR* realdir = _zzip_opendir(filename);
+ if (realdir)
+ {
+ if (! (dir = (ZZIP_DIR *)calloc(1, sizeof (*dir))))
+ {
+ _zzip_closedir(realdir);
+ return 0;
+ }else
+ {
+ dir->realdir = realdir;
+ dir->realname = strdup(filename);
+ return dir;
+ }
+ }
+ }
+ return 0;
+ }
+# endif /* HAVE_SYS_STAT_H */
+
+ try_zzip:
+ dir = zzip_dir_open_ext_io (filename, &e, ext, io);
+ if (! dir && (o_modes & ZZIP_PREFERZIP)) goto try_real;
+ if (e) errno = zzip_errno(e);
+ return dir;
+}
+
+/**
+ * This function is the equivalent of => closedir(3) for a realdir or zipfile.
+ *
+ * This function is magic - if the given arg-ZZIP_DIR
+ * is a real directory, it will call the real => closedir(3) and then
+ * free the wrapping ZZIP_DIR structure. Otherwise it will divert
+ * to => zzip_dir_close which will free the ZZIP_DIR structure.
+ */
+int
+zzip_closedir(ZZIP_DIR* dir)
+{
+ if (! dir) { errno = EBADF; return -1; }
+
+ if (USE_DIRENT && dir->realdir)
+ {
+ _zzip_closedir(dir->realdir);
+ free(dir->realname);
+ free(dir);
+ return 0;
+ }else
+ {
+ zzip_dir_close(dir);
+ return 0;
+ }
+}
+
+/*
+ * Local variables:
+ * c-file-style: "stroustrup"
+ * End:
+ */
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