Import files from zlib 1.2.5.

Modules/zlib/minigzip.c

@@ -1,5 +1,5 @@
 /* minigzip.c -- simulate gzip using the zlib compression library
- * Copyright (C) 1995-2005 Jean-loup Gailly.
+ * Copyright (C) 1995-2006, 2010 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -15,8 +15,8 @@
 
 /* @(#) $Id$ */
 
-#include <stdio.h>
 #include "zlib.h"
+#include <stdio.h>
 
 #ifdef STDC
 #  include <string.h>
@@ -32,6 +32,9 @@
 #if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
 #  include <fcntl.h>
 #  include <io.h>
+#  ifdef UNDER_CE
+#    include <stdlib.h>
+#  endif
 #  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
 #else
 #  define SET_BINARY_MODE(file)
@@ -41,13 +44,84 @@
 #  define unlink delete
 #  define GZ_SUFFIX "-gz"
 #endif
+#ifdef RISCOS
+#  define unlink remove
+#  define GZ_SUFFIX "-gz"
+#  define fileno(file) file->__file
+#endif
 #if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 #  include <unix.h> /* for fileno */
 #endif
 
+#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE)
 #ifndef WIN32 /* unlink already in stdio.h for WIN32 */
   extern int unlink OF((const char *));
 #endif
+#endif
+
+#if defined(UNDER_CE)
+#  include <windows.h>
+#  define perror(s) pwinerror(s)
+
+/* Map the Windows error number in ERROR to a locale-dependent error
+   message string and return a pointer to it.  Typically, the values
+   for ERROR come from GetLastError.
+
+   The string pointed to shall not be modified by the application,
+   but may be overwritten by a subsequent call to strwinerror
+
+   The strwinerror function does not change the current setting
+   of GetLastError.  */
+
+static char *strwinerror (error)
+     DWORD error;
+{
+    static char buf[1024];
+
+    wchar_t *msgbuf;
+    DWORD lasterr = GetLastError();
+    DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
+        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
+        NULL,
+        error,
+        0, /* Default language */
+        (LPVOID)&msgbuf,
+        0,
+        NULL);
+    if (chars != 0) {
+        /* If there is an \r\n appended, zap it.  */
+        if (chars >= 2
+            && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
+            chars -= 2;
+            msgbuf[chars] = 0;
+        }
+
+        if (chars > sizeof (buf) - 1) {
+            chars = sizeof (buf) - 1;
+            msgbuf[chars] = 0;
+        }
+
+        wcstombs(buf, msgbuf, chars + 1);
+        LocalFree(msgbuf);
+    }
+    else {
+        sprintf(buf, "unknown win32 error (%ld)", error);
+    }
+
+    SetLastError(lasterr);
+    return buf;
+}
+
+static void pwinerror (s)
+    const char *s;
+{
+    if (s && *s)
+        fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ()));
+    else
+        fprintf(stderr, "%s\n", strwinerror(GetLastError ()));
+}
+
+#endif /* UNDER_CE */
 
 #ifndef GZ_SUFFIX
 #  define GZ_SUFFIX ".gz"
@@ -193,6 +267,11 @@ void file_compress(file, mode)
     FILE  *in;
     gzFile out;
 
+    if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) {
+        fprintf(stderr, "%s: filename too long\n", prog);
+        exit(1);
+    }
+
     strcpy(outfile, file);
     strcat(outfile, GZ_SUFFIX);
 
@@ -222,7 +301,12 @@ void file_uncompress(file)
     char *infile, *outfile;
     FILE  *out;
     gzFile in;
-    uInt len = (uInt)strlen(file);
+    size_t len = strlen(file);
+
+    if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) {
+        fprintf(stderr, "%s: filename too long\n", prog);
+        exit(1);
+    }
 
     strcpy(buf, file);
 
@@ -253,7 +337,8 @@ void file_uncompress(file)
 
 
 /* ===========================================================================
- * Usage:  minigzip [-d] [-f] [-h] [-r] [-1 to -9] [files...]
+ * Usage:  minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...]
+ *   -c : write to standard output
  *   -d : decompress
  *   -f : compress with Z_FILTERED
  *   -h : compress with Z_HUFFMAN_ONLY
@@ -265,17 +350,30 @@ int main(argc, argv)
     int argc;
     char *argv[];
 {
+    int copyout = 0;
     int uncompr = 0;
     gzFile file;
-    char outmode[20];
+    char *bname, outmode[20];
 
     strcpy(outmode, "wb6 ");
 
     prog = argv[0];
+    bname = strrchr(argv[0], '/');
+    if (bname)
+      bname++;
+    else
+      bname = argv[0];
     argc--, argv++;
 
+    if (!strcmp(bname, "gunzip"))
+      uncompr = 1;
+    else if (!strcmp(bname, "zcat"))
+      copyout = uncompr = 1;
+
     while (argc > 0) {
-      if (strcmp(*argv, "-d") == 0)
+      if (strcmp(*argv, "-c") == 0)
+        copyout = 1;
+      else if (strcmp(*argv, "-d") == 0)
         uncompr = 1;
       else if (strcmp(*argv, "-f") == 0)
         outmode[3] = 'f';
@@ -305,11 +403,36 @@ int main(argc, argv)
             gz_compress(stdin, file);
         }
     } else {
+        if (copyout) {
+            SET_BINARY_MODE(stdout);
+        }
         do {
             if (uncompr) {
-                file_uncompress(*argv);
+                if (copyout) {
+                    file = gzopen(*argv, "rb");
+                    if (file == NULL)
+                        fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv);
+                    else
+                        gz_uncompress(file, stdout);
+                } else {
+                    file_uncompress(*argv);
+                }
             } else {
-                file_compress(*argv, outmode);
+                if (copyout) {
+                    FILE * in = fopen(*argv, "rb");
+
+                    if (in == NULL) {
+                        perror(*argv);
+                    } else {
+                        file = gzdopen(fileno(stdout), outmode);
+                        if (file == NULL) error("can't gzdopen stdout");
+
+                        gz_compress(in, file);
+                    }
+
+                } else {
+                    file_compress(*argv, outmode);
+                }
             }
         } while (argv++, --argc);
     }