--- /dev/null
+/* zutil.c -- target dependent utility functions for the compression library\r
+ * Copyright (C) 1995-2005 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#include "zutil.h"\r
+\r
+#ifndef NO_DUMMY_DECL\r
+struct internal_state {int dummy;}; /* for buggy compilers */\r
+#endif\r
+\r
+const char * const z_errmsg[10] = {\r
+"need dictionary", /* Z_NEED_DICT 2 */\r
+"stream end", /* Z_STREAM_END 1 */\r
+"", /* Z_OK 0 */\r
+"file error", /* Z_ERRNO (-1) */\r
+"stream error", /* Z_STREAM_ERROR (-2) */\r
+"data error", /* Z_DATA_ERROR (-3) */\r
+"insufficient memory", /* Z_MEM_ERROR (-4) */\r
+"buffer error", /* Z_BUF_ERROR (-5) */\r
+"incompatible version",/* Z_VERSION_ERROR (-6) */\r
+""};\r
+\r
+\r
+const char * ZEXPORT zlibVersion()\r
+{\r
+ return ZLIB_VERSION;\r
+}\r
+\r
+uLong ZEXPORT zlibCompileFlags()\r
+{\r
+ uLong flags;\r
+\r
+ flags = 0;\r
+ switch (sizeof(uInt)) {\r
+ case 2: break;\r
+ case 4: flags += 1; break;\r
+ case 8: flags += 2; break;\r
+ default: flags += 3;\r
+ }\r
+ switch (sizeof(uLong)) {\r
+ case 2: break;\r
+ case 4: flags += 1 << 2; break;\r
+ case 8: flags += 2 << 2; break;\r
+ default: flags += 3 << 2;\r
+ }\r
+ switch (sizeof(voidpf)) {\r
+ case 2: break;\r
+ case 4: flags += 1 << 4; break;\r
+ case 8: flags += 2 << 4; break;\r
+ default: flags += 3 << 4;\r
+ }\r
+ switch (sizeof(z_off_t)) {\r
+ case 2: break;\r
+ case 4: flags += 1 << 6; break;\r
+ case 8: flags += 2 << 6; break;\r
+ default: flags += 3 << 6;\r
+ }\r
+#ifdef DEBUG\r
+ flags += 1 << 8;\r
+#endif\r
+#if defined(ASMV) || defined(ASMINF)\r
+ flags += 1 << 9;\r
+#endif\r
+#ifdef ZLIB_WINAPI\r
+ flags += 1 << 10;\r
+#endif\r
+#ifdef BUILDFIXED\r
+ flags += 1 << 12;\r
+#endif\r
+#ifdef DYNAMIC_CRC_TABLE\r
+ flags += 1 << 13;\r
+#endif\r
+#ifdef NO_GZCOMPRESS\r
+ flags += 1L << 16;\r
+#endif\r
+#ifdef NO_GZIP\r
+ flags += 1L << 17;\r
+#endif\r
+#ifdef PKZIP_BUG_WORKAROUND\r
+ flags += 1L << 20;\r
+#endif\r
+#ifdef FASTEST\r
+ flags += 1L << 21;\r
+#endif\r
+#ifdef STDC\r
+# ifdef NO_vsnprintf\r
+ flags += 1L << 25;\r
+# ifdef HAS_vsprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# else\r
+# ifdef HAS_vsnprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# endif\r
+#else\r
+ flags += 1L << 24;\r
+# ifdef NO_snprintf\r
+ flags += 1L << 25;\r
+# ifdef HAS_sprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# else\r
+# ifdef HAS_snprintf_void\r
+ flags += 1L << 26;\r
+# endif\r
+# endif\r
+#endif\r
+ return flags;\r
+}\r
+\r
+#ifdef DEBUG\r
+\r
+# ifndef verbose\r
+# define verbose 0\r
+# endif\r
+int z_verbose = verbose;\r
+\r
+void z_error (m)\r
+ char *m;\r
+{\r
+ fprintf(stderr, "%s\n", m);\r
+ exit(1);\r
+}\r
+#endif\r
+\r
+/* exported to allow conversion of error code to string for compress() and\r
+ * uncompress()\r
+ */\r
+const char * ZEXPORT zError(err)\r
+ int err;\r
+{\r
+ return ERR_MSG(err);\r
+}\r
+\r
+#if defined(_WIN32_WCE)\r
+ /* The Microsoft C Run-Time Library for Windows CE doesn't have\r
+ * errno. We define it as a global variable to simplify porting.\r
+ * Its value is always 0 and should not be used.\r
+ */\r
+ int errno = 0;\r
+#endif\r
+\r
+#ifndef HAVE_MEMCPY\r
+\r
+void zmemcpy(dest, source, len)\r
+ Bytef* dest;\r
+ const Bytef* source;\r
+ uInt len;\r
+{\r
+ if (len == 0) return;\r
+ do {\r
+ *dest++ = *source++; /* ??? to be unrolled */\r
+ } while (--len != 0);\r
+}\r
+\r
+int zmemcmp(s1, s2, len)\r
+ const Bytef* s1;\r
+ const Bytef* s2;\r
+ uInt len;\r
+{\r
+ uInt j;\r
+\r
+ for (j = 0; j < len; j++) {\r
+ if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;\r
+ }\r
+ return 0;\r
+}\r
+\r
+void zmemzero(dest, len)\r
+ Bytef* dest;\r
+ uInt len;\r
+{\r
+ if (len == 0) return;\r
+ do {\r
+ *dest++ = 0; /* ??? to be unrolled */\r
+ } while (--len != 0);\r
+}\r
+#endif\r
+\r
+\r
+#ifdef SYS16BIT\r
+\r
+#ifdef __TURBOC__\r
+/* Turbo C in 16-bit mode */\r
+\r
+# define MY_ZCALLOC\r
+\r
+/* Turbo C malloc() does not allow dynamic allocation of 64K bytes\r
+ * and farmalloc(64K) returns a pointer with an offset of 8, so we\r
+ * must fix the pointer. Warning: the pointer must be put back to its\r
+ * original form in order to free it, use zcfree().\r
+ */\r
+\r
+#define MAX_PTR 10\r
+/* 10*64K = 640K */\r
+\r
+local int next_ptr = 0;\r
+\r
+typedef struct ptr_table_s {\r
+ voidpf org_ptr;\r
+ voidpf new_ptr;\r
+} ptr_table;\r
+\r
+local ptr_table table[MAX_PTR];\r
+/* This table is used to remember the original form of pointers\r
+ * to large buffers (64K). Such pointers are normalized with a zero offset.\r
+ * Since MSDOS is not a preemptive multitasking OS, this table is not\r
+ * protected from concurrent access. This hack doesn't work anyway on\r
+ * a protected system like OS/2. Use Microsoft C instead.\r
+ */\r
+\r
+voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)\r
+{\r
+ voidpf buf = opaque; /* just to make some compilers happy */\r
+ ulg bsize = (ulg)items*size;\r
+\r
+ /* If we allocate less than 65520 bytes, we assume that farmalloc\r
+ * will return a usable pointer which doesn't have to be normalized.\r
+ */\r
+ if (bsize < 65520L) {\r
+ buf = farmalloc(bsize);\r
+ if (*(ush*)&buf != 0) return buf;\r
+ } else {\r
+ buf = farmalloc(bsize + 16L);\r
+ }\r
+ if (buf == NULL || next_ptr >= MAX_PTR) return NULL;\r
+ table[next_ptr].org_ptr = buf;\r
+\r
+ /* Normalize the pointer to seg:0 */\r
+ *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;\r
+ *(ush*)&buf = 0;\r
+ table[next_ptr++].new_ptr = buf;\r
+ return buf;\r
+}\r
+\r
+void zcfree (voidpf opaque, voidpf ptr)\r
+{\r
+ int n;\r
+ if (*(ush*)&ptr != 0) { /* object < 64K */\r
+ farfree(ptr);\r
+ return;\r
+ }\r
+ /* Find the original pointer */\r
+ for (n = 0; n < next_ptr; n++) {\r
+ if (ptr != table[n].new_ptr) continue;\r
+\r
+ farfree(table[n].org_ptr);\r
+ while (++n < next_ptr) {\r
+ table[n-1] = table[n];\r
+ }\r
+ next_ptr--;\r
+ return;\r
+ }\r
+ ptr = opaque; /* just to make some compilers happy */\r
+ Assert(0, "zcfree: ptr not found");\r
+}\r
+\r
+#endif /* __TURBOC__ */\r
+\r
+\r
+#ifdef M_I86\r
+/* Microsoft C in 16-bit mode */\r
+\r
+# define MY_ZCALLOC\r
+\r
+#if (!defined(_MSC_VER) || (_MSC_VER <= 600))\r
+# define _halloc halloc\r
+# define _hfree hfree\r
+#endif\r
+\r
+voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)\r
+{\r
+ if (opaque) opaque = 0; /* to make compiler happy */\r
+ return _halloc((long)items, size);\r
+}\r
+\r
+void zcfree (voidpf opaque, voidpf ptr)\r
+{\r
+ if (opaque) opaque = 0; /* to make compiler happy */\r
+ _hfree(ptr);\r
+}\r
+\r
+#endif /* M_I86 */\r
+\r
+#endif /* SYS16BIT */\r
+\r
+\r
+#ifndef MY_ZCALLOC /* Any system without a special alloc function */\r
+\r
+#ifndef STDC\r
+extern voidp malloc OF((uInt size));\r
+extern voidp calloc OF((uInt items, uInt size));\r
+extern void free OF((voidpf ptr));\r
+#endif\r
+\r
+voidpf zcalloc (opaque, items, size)\r
+ voidpf opaque;\r
+ unsigned items;\r
+ unsigned size;\r
+{\r
+ if (opaque) items += size - size; /* make compiler happy */\r
+ return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :\r
+ (voidpf)calloc(items, size);\r
+}\r
+\r
+void zcfree (opaque, ptr)\r
+ voidpf opaque;\r
+ voidpf ptr;\r
+{\r
+ free(ptr);\r
+ if (opaque) return; /* make compiler happy */\r
+}\r
+\r
+#endif /* MY_ZCALLOC */\r
projects / shibboleth / cpp-opensaml.git / blobdiff