+++ /dev/null
-/*
- * Acess2
- * Common Library Functions
- */
-#include <common.h>
-
-// === CONSTANTS ===
-#define RANDOM_SEED 0xACE55052
-#define RANDOM_A 0x00731ADE
-#define RANDOM_C 12345
-#define RANDOM_SPRUCE 0xf12b02b
-// Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
-const short DAYS_BEFORE[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
-#define UNIX_TO_2K ((30*365*3600*24) + (7*3600*24)) //Normal years + leap years
-
-// === PROTOTYPES ===
- int ReadUTF8(Uint8 *str, Uint32 *Val);
-
-// === GLOBALS ===
-static Uint giRandomState = RANDOM_SEED;
-
-// === CODE ===
-static const char cUCDIGITS[] = "0123456789ABCDEF";
-/**
- * \fn static void itoa(char *buf, Uint num, int base, int minLength, char pad)
- * \brief Convert an integer into a character string
- */
-void itoa(char *buf, Uint num, int base, int minLength, char pad)
-{
- char tmpBuf[BITS];
- int pos=0, i;
-
- // Sanity check
- if(!buf) return;
-
- // Sanity Check
- if(base > 16 || base < 2) {
- buf[0] = 0;
- return;
- }
-
- // Convert
- while(num > base-1) {
- tmpBuf[pos] = cUCDIGITS[ num % base ];
- num /= (Uint)base; // Shift `num` right 1 digit
- pos++;
- }
- tmpBuf[pos++] = cUCDIGITS[ num % base ]; // Last digit of `num`
-
- // Put in reverse
- i = 0;
- minLength -= pos;
- while(minLength-- > 0) buf[i++] = pad;
- while(pos-- > 0) buf[i++] = tmpBuf[pos]; // Reverse the order of characters
- buf[i] = 0;
-}
-
-/**
- * \fn int tolower(int c)
- * \brief Converts a character to lower case
- */
-int tolower(int c)
-{
- if('A' <= c && c <= 'Z')
- return c - 'A' + 'a';
- return c;
-}
-
-/**
- * \fn int strucmp(char *Str1, char *Str2)
- * \brief Compare \a Str1 and \a Str2 case-insensitively
- */
-int strucmp(const char *Str1, const char *Str2)
-{
- while(*Str1 && tolower(*Str1) == tolower(*Str2))
- Str1++, Str2++;
- return tolower(*Str1) - tolower(*Str2);
-}
-
-/**
- * \fn int strpos(const char *Str, char Ch)
- * \brief Search a string for an ascii character
- */
-int strpos(const char *Str, char Ch)
-{
- int pos;
- for(pos=0;Str[pos];pos++)
- {
- if(Str[pos] == Ch) return pos;
- }
- return -1;
-}
-
-/**
- * \fn int ByteSum(void *Ptr, int Size)
- * \brief Adds the bytes in a memory region and returns the sum
- */
-int ByteSum(void *Ptr, int Size)
-{
- int sum = 0;
- while(Size--) sum += *(Uint8*)Ptr++;
- return sum;
-}
-
-/**
- * \fn Uint strlen(const char *__str)
- * \brief Get the length of string
- */
-Uint strlen(const char *__str)
-{
- Uint ret = 0;
- while(*__str++) ret++;
- return ret;
-}
-
-/**
- * \fn char *strcpy(const char *__str1, const char *__str2)
- * \brief Copy a string to a new location
- */
-char *strcpy(char *__str1, const char *__str2)
-{
- while(*__str2)
- *__str1++ = *__str2++;
- *__str1 = '\0'; // Terminate String
- return __str1;
-}
-
-/**
- * \fn int strcmp(const char *str1, const char *str2)
- * \brief Compare two strings return the difference between
- * the first non-matching characters.
- */
-int strcmp(const char *str1, const char *str2)
-{
- while(*str1 && *str1 == *str2)
- str1++, str2++;
- return *str1 - *str2;
-}
-
-/**
- * \fn int strncmp(const char *Str1, const char *Str2, size_t num)
- * \brief Compare strings \a Str1 and \a Str2 to a maximum of \a num characters
- */
-int strncmp(const char *Str1, const char *Str2, size_t num)
-{
- if(num == 0) return 0; // TODO: Check what should officially happen here
- while(--num && *Str1 && *Str1 == *Str2)
- Str1++, Str2++;
- return *Str1-*Str2;
-}
-
-/**
- * \fn char *strdup(const char *Str)
- * \brief Duplicates a string
- */
-char *strdup(const char *Str)
-{
- char *ret;
- ret = malloc(strlen(Str)+1);
- strcpy(ret, Str);
- return ret;
-}
-
-/**
- * \fn int DivUp(int num, int dem)
- * \brief Divide two numbers, rounding up
- * \param num Numerator
- * \param dem Denominator
- */
-int DivUp(int num, int dem)
-{
- return (num+dem-1)/dem;
-}
-
-/**
- * \fn int strpos8(const char *str, Uint32 search)
- * \brief Search a string for a UTF-8 character
- */
-int strpos8(const char *str, Uint32 Search)
-{
- int pos;
- Uint32 val = 0;
- for(pos=0;str[pos];pos++)
- {
- // ASCII Range
- if(Search < 128) {
- if(str[pos] == Search) return pos;
- continue;
- }
- if(*(Uint8*)(str+pos) < 128) continue;
-
- pos += ReadUTF8( (Uint8*)&str[pos], &val );
- if(val == Search) return pos;
- }
- return -1;
-}
-
-/**
- * \fn int ReadUTF8(Uint8 *str, Uint32 *Val)
- * \brief Read a UTF-8 character from a string
- */
-int ReadUTF8(Uint8 *str, Uint32 *Val)
-{
- *Val = 0xFFFD; // Assume invalid character
-
- // ASCII
- if( !(*str & 0x80) ) {
- *Val = *str;
- return 1;
- }
-
- // Middle of a sequence
- if( (*str & 0xC0) == 0x80 ) {
- return 1;
- }
-
- // Two Byte
- if( (*str & 0xE0) == 0xC0 ) {
- *Val = (*str & 0x1F) << 6; // Upper 6 Bits
- str ++;
- if( (*str & 0xC0) != 0x80) return -1; // Validity check
- *Val |= (*str & 0x3F); // Lower 6 Bits
- return 2;
- }
-
- // Three Byte
- if( (*str & 0xF0) == 0xE0 ) {
- *Val = (*str & 0x0F) << 12; // Upper 4 Bits
- str ++;
- if( (*str & 0xC0) != 0x80) return -1; // Validity check
- *Val |= (*str & 0x3F) << 6; // Middle 6 Bits
- str ++;
- if( (*str & 0xC0) != 0x80) return -1; // Validity check
- *Val |= (*str & 0x3F); // Lower 6 Bits
- return 3;
- }
-
- // Four Byte
- if( (*str & 0xF1) == 0xF0 ) {
- *Val = (*str & 0x07) << 18; // Upper 3 Bits
- str ++;
- if( (*str & 0xC0) != 0x80) return -1; // Validity check
- *Val |= (*str & 0x3F) << 12; // Middle-upper 6 Bits
- str ++;
- if( (*str & 0xC0) != 0x80) return -1; // Validity check
- *Val |= (*str & 0x3F) << 6; // Middle-lower 6 Bits
- str ++;
- if( (*str & 0xC0) != 0x80) return -1; // Validity check
- *Val |= (*str & 0x3F); // Lower 6 Bits
- return 4;
- }
-
- // UTF-8 Doesn't support more than four bytes
- return 4;
-}
-
-/**
- * \fn int WriteUTF8(Uint8 *str, Uint32 Val)
- * \brief Write a UTF-8 character sequence to a string
- */
-int WriteUTF8(Uint8 *str, Uint32 Val)
-{
- // ASCII
- if( Val < 128 ) {
- *str = Val;
- return 1;
- }
-
- // Two Byte
- if( Val < 0x8000 ) {
- *str = 0xC0 | (Val >> 6);
- str ++;
- *str = 0x80 | (Val & 0x3F);
- return 2;
- }
-
- // Three Byte
- if( Val < 0x10000 ) {
- *str = 0xE0 | (Val >> 12);
- str ++;
- *str = 0x80 | ((Val >> 6) & 0x3F);
- str ++;
- *str = 0x80 | (Val & 0x3F);
- return 3;
- }
-
- // Four Byte
- if( Val < 0x110000 ) {
- *str = 0xF0 | (Val >> 18);
- str ++;
- *str = 0x80 | ((Val >> 12) & 0x3F);
- str ++;
- *str = 0x80 | ((Val >> 6) & 0x3F);
- str ++;
- *str = 0x80 | (Val & 0x3F);
- return 4;
- }
-
- // UTF-8 Doesn't support more than four bytes
- return 0;
-}
-
-/**
- * \fn Uint64 timestamp(int sec, int mins, int hrs, int day, int month, int year)
- * \brief Converts a date into an Acess Timestamp
- */
-Sint64 timestamp(int sec, int mins, int hrs, int day, int month, int year)
-{
- Sint64 stamp;
- stamp = sec;
- stamp += mins*60;
- stamp += hrs*3600;
-
- stamp += day*3600*24;
- stamp += month*DAYS_BEFORE[month]*3600*24;
- if( (
- ((year&3) == 0 || year%100 != 0)
- || (year%100 == 0 && ((year/100)&3) == 0)
- ) && month > 1) // Leap year and after feb
- stamp += 3600*24;
-
- stamp += ((365*4+1) * ((year-2000)&~3)) * 3600*24; // Foour Year Segments
- stamp += ((year-2000)&3) * 365*3600*24; // Inside four year segment
- stamp += UNIX_TO_2K;
-
- return stamp * 1000;
-}
-
-/**
- * \fn Uint rand()
- * \brief Pseudo random number generator
- * \note Unknown effectiveness (made up on the spot)
- */
-Uint rand()
-{
- Uint old = giRandomState;
- // Get the next state value
- giRandomState = (RANDOM_A*giRandomState + RANDOM_C) & 0xFFFFFFFF;
- // Check if it has changed, and if it hasn't, change it
- if(giRandomState == old) giRandomState += RANDOM_SPRUCE;
- return giRandomState;
-}
-
-/// \name Memory Validation
-/// \{
-/**
- * \brief Checks if a string resides fully in valid memory
- */
-int CheckString(char *String)
-{
- // Check 1st page
- if( MM_IsUser( (tVAddr)String ) )
- {
- // Traverse String
- while( *String )
- {
- if( !MM_IsUser( (tVAddr)String ) )
- return 0;
- // Increment string pointer
- String ++;
- }
- return 1;
- }
- else if( MM_GetPhysAddr( (tVAddr)String ) )
- {
- // Traverse String
- while( *String )
- {
- if( !MM_GetPhysAddr( (tVAddr)String ) )
- return 0;
- // Increment string pointer
- String ++;
- }
- return 1;
- }
- return 0;
-}
-
-/**
- * \brief Check if a sized memory region is valid memory
- */
-int CheckMem(void *Mem, int NumBytes)
-{
- tVAddr addr = (tVAddr)Mem;
-
- if( MM_IsUser( addr ) )
- {
- while( NumBytes-- )
- {
- if( !MM_IsUser( addr ) )
- return 0;
- addr ++;
- }
- return 1;
- }
- else if( MM_GetPhysAddr( addr ) )
- {
- while( NumBytes-- )
- {
- if( !MM_GetPhysAddr( addr ) )
- return 0;
- addr ++;
- }
- return 1;
- }
- return 0;
-}
-/// \}
-
-/**
- * \brief Search a string array for \a Needle
- * \note Helper function for eTplDrv_IOCtl::DRV_IOCTL_LOOKUP
- */
-int LookupString(char **Array, char *Needle)
-{
- int i;
- for( i = 0; Array[i]; i++ )
- {
- if(strcmp(Array[i], Needle) == 0) return i;
- }
- return -1;
-}
-
-EXPORT(strlen);
-EXPORT(strdup);
-EXPORT(strcmp);
-EXPORT(strncmp);
-EXPORT(strcpy);
-//EXPORT(strncpy);
-
-EXPORT(timestamp);
-EXPORT(ReadUTF8);
-EXPORT(CheckMem);
-EXPORT(CheckString);
-EXPORT(LookupString);
git.ucc.asn.au / tpg / acess2.git / blobdiff
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