--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dmlib.c	Fri Sep 28 01:54:23 2012 +0300
@@ -0,0 +1,199 @@
+#include "dmlib.h"
+#include <errno.h>
+
+
+int      dmVerbosity = 0;
+char     *dmProgName = NULL,
+         *dmProgDesc = NULL,
+         *dmProgVersion = NULL,
+         *dmProgAuthor = NULL,
+         *dmProgLicense = NULL;
+
+
+void dmInitProg(char *name, char *desc, char *version, char *author, char *license)
+{
+    dmProgName     = name;
+    dmProgDesc     = desc;
+    dmProgVersion  = version;
+
+    if (author)
+        dmProgAuthor = author;
+    else
+        dmProgAuthor = DM_PROG_AUTHOR;
+
+    if (license)
+        dmProgLicense = license;
+    else
+        dmProgLicense = DM_PROG_LICENSE;
+
+}
+
+
+void dmPrintBanner(FILE *outFile, const char *name, const char *usage)
+{
+    fprintf(outFile,
+            "\n%s v%s (%s)\n"
+            "%s\n"
+            "%s\n"
+            "Usage: %s %s\n",
+            dmProgName, dmProgVersion, dmProgDesc,
+            dmProgAuthor, dmProgLicense, name, usage);
+}
+
+
+void dmMsgVA(int level, const char *fmt, va_list ap)
+{
+    if (dmVerbosity >= level)
+    {
+        fprintf(stderr, "%s: ", dmProgName);
+        vfprintf(stderr, fmt, ap);
+    }
+}
+
+
+void dmPrintVA(int level, const char *fmt, va_list ap)
+{
+    if (dmVerbosity >= level)
+    {
+        vfprintf(stderr, fmt, ap);
+    }
+}
+
+
+void dmErrorVA(const char *fmt, va_list ap)
+{
+    fprintf(stderr, "%s: ", dmProgName);
+    vfprintf(stderr, fmt, ap);
+}
+
+
+void dmError(const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    dmErrorVA(fmt, ap);
+    va_end(ap);
+}
+
+
+void dmMsg(int level, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    dmMsgVA(level, fmt, ap);
+    va_end(ap);
+}
+
+
+void dmPrint(int level, const char *fmt, ...)
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    dmPrintVA(level, fmt, ap);
+    va_end(ap);
+}
+
+
+/* Memory handling routines
+ */
+void *dmMalloc(size_t l)
+{
+    return malloc(l);
+}
+
+
+void *dmMalloc0(size_t l)
+{
+    return calloc(1, l);
+}
+
+
+void *dmCalloc(size_t n, size_t l)
+{
+    return calloc(n, l);
+}
+
+
+void *dmRealloc(void *p, size_t l)
+{
+    return realloc(p, l);
+}
+
+
+void dmFree(void *p)
+{
+    /* Check for NULL pointers for portability due to some libc
+     * implementations not handling free(NULL) too well.
+     */
+    if (p) free(p);
+}
+
+
+BOOL dmGetIntVal(const char *s, int *i)
+{
+    if (s[0] == '$')
+    {
+        if (sscanf(&s[1], "%x", i) < 1)
+            return FALSE;
+    }
+    else if (s[0] == '0' && s[1] == 'x')
+    {
+        if (sscanf(&s[2], "%x", i) < 1)
+            return FALSE;
+    }
+    else
+    {
+        if (sscanf(s, "%u", i) < 1)
+            return FALSE;
+    }
+    return TRUE;
+}
+
+
+/* Error handling
+ */
+#define DM_SYSTEM_ERRORS 100000
+
+int dmGetErrno()
+{
+    return DM_SYSTEM_ERRORS + errno;
+}
+
+
+const char *dmErrorStr(int error)
+{
+    if (error >= DM_SYSTEM_ERRORS)
+        return strerror(error - DM_SYSTEM_ERRORS);
+    
+    switch (error)
+    {
+        case DMERR_OK:             return "No error";
+        case DMERR_FOPEN:          return "File open error";
+        case DMERR_FREAD:          return "Read error";
+        case DMERR_FWRITE:         return "Write error";
+        case DMERR_FSEEK:          return "Seek error";
+        case DMERR_NOT_FOUND:      return "Resource not found";
+
+        case DMERR_INVALID_DATA:   return "Invalid data";
+        case DMERR_MALLOC:         return "Memory allocation failure";
+        case DMERR_ALREADY_INIT:   return "Already initialized";
+        case DMERR_INIT_FAIL:      return "Initialization failed";
+        case DMERR_INVALID_ARGS:   return "Invalid arguments";
+
+        case DMERR_NULLPTR:        return "NULL pointer";
+        case DMERR_NOT_SUPPORTED:  return "Operation not supported";
+        case DMERR_OUT_OF_DATA:    return "Out of data";
+        case DMERR_EXTRA_DATA:     return "Extra data";
+        case DMERR_BOUNDS:         return "Bounds check failed";
+
+        case DMERR_NOTPACK:        return "File is not a PACK";
+        case DMERR_VERSION:        return "Unsupported PACK version";
+        case DMERR_INVALID:        return "Invalid data, corrupted file";
+        case DMERR_COMPRESSION:    return "Error in compression";
+
+        default:                   return "Unknown error";
+    }
+}