2 * AcessOS Basic C Library
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6 #include <acess/sys.h>
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11 #include "stdio_int.h"
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13 #define WRITE_STR(_fd, _str) write(_fd, _str, sizeof(_str))
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15 #define DEBUG_BUILD 0
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17 // === CONSTANTS ===
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21 // === PROTOTYPES ===
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22 EXPORT void itoa(char *buf, uint64_t num, size_t base, int minLength, char pad, int bSigned);
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23 struct sFILE *get_file_struct();
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26 struct sFILE _iob[STDIO_MAX_STREAMS]; // IO Buffer
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27 struct sFILE *stdin; // Standard Input
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28 struct sFILE *stdout; // Standard Output
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29 struct sFILE *stderr; // Standard Error
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30 ///\note Initialised in SoMain
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34 * \fn FILE *freopen(char *file, char *mode, FILE *fp)
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36 EXPORT FILE *freopen(const char *file, const char *mode, FILE *fp)
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41 // Sanity Check Arguments
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42 if(!fp || !file || !mode) return NULL;
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52 case 'r': fp->Flags = FILE_FLAG_MODE_READ; break;
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53 case 'w': fp->Flags = FILE_FLAG_MODE_WRITE; break;
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54 case 'a': fp->Flags = FILE_FLAG_MODE_APPEND; break;
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55 case 'x': fp->Flags = FILE_FLAG_MODE_EXEC; break;
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60 for(i=1;mode[i];i++)
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64 case '+': fp->Flags |= FILE_FLAG_M_EXT;
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72 case 'r': openFlags = OPENFLAG_READ;
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73 if(fp->Flags & FILE_FLAG_M_EXT)
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74 openFlags |= OPENFLAG_WRITE;
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77 case 'w': openFlags = OPENFLAG_WRITE;
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78 if(fp->Flags & FILE_FLAG_M_EXT)
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79 openFlags |= OPENFLAG_READ;
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82 case 'x': openFlags = OPENFLAG_EXEC;
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88 fp->FD = reopen(fp->FD, file, openFlags);
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90 fp->FD = open(file, openFlags);
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96 if(mode[0] == 'a') {
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97 seek(fp->FD, 0, SEEK_END); //SEEK_END
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103 \fn FILE *fopen(const char *file, const char *mode)
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104 \brief Opens a file and returns the pointer
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105 \param file String - Filename to open
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106 \param mode Mode to open in
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108 EXPORT FILE *fopen(const char *file, const char *mode)
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112 // Sanity Check Arguments
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113 if(!file || !mode) return NULL;
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115 // Create Return Structure
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116 retFile = get_file_struct();
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118 return freopen(file, mode, retFile);
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121 EXPORT int fclose(FILE *fp)
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129 EXPORT void fflush(FILE *fp)
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134 EXPORT void clearerr(FILE *stream)
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136 /// \todo Impliment
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139 EXPORT int feof(FILE *stream)
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141 return 0; //stream->; // ?
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144 EXPORT int ferror(FILE *stream)
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148 EXPORT int fileno(FILE *stream)
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153 EXPORT off_t ftell(FILE *fp)
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155 if(!fp || !fp->FD) return -1;
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157 return tell(fp->FD);
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160 EXPORT int fseek(FILE *fp, long int amt, int whence)
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162 if(!fp || !fp->FD) return -1;
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164 return seek(fp->FD, amt, whence);
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169 * \fn EXPORT int vfprintf(FILE *fp, const char *format, va_list args)
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170 * \brief Print to a file from a variable argument list
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172 EXPORT int vfprintf(FILE *fp, const char *format, va_list args)
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177 if(!fp || !format) return -1;
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179 va_copy(tmpList, args);
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181 size = vsnprintf(NULL, 0, (char*)format, tmpList);
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183 vsnprintf(buf, size+1, (char*)format, args);
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186 write(fp->FD, buf, size);
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191 // Return written byte count
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196 * \fn int fprintf(FILE *fp, const char *format, ...)
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197 * \brief Print a formatted string to a stream
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199 EXPORT int fprintf(FILE *fp, const char *format, ...)
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205 va_start(args, format);
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206 ret = vfprintf(fp, (char*)format, args);
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213 * \fn EXPORT size_t fwrite(void *ptr, size_t size, size_t num, FILE *fp)
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214 * \brief Write to a stream
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216 EXPORT size_t fwrite(void *ptr, size_t size, size_t num, FILE *fp)
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219 if(!fp || !fp->FD) return -1;
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221 ret = write(fp->FD, ptr, size*num);
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227 * \fn EXPORT size_t fread(void *ptr, size_t size, size_t num, FILE *fp)
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228 * \brief Read from a stream
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230 EXPORT size_t fread(void *ptr, size_t size, size_t num, FILE *fp)
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233 if(!fp || !fp->FD) return -1;
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235 // TODO: Fit the spec better with the return value
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236 ret = read(fp->FD, ptr, size*num);
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242 * \fn EXPORT int fputc(int c, FILE *fp)
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243 * \brief Write a single character to the stream
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245 EXPORT int fputc(int c, FILE *fp)
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247 if(!fp || !fp->FD) return -1;
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248 return write(fp->FD, &c, 1);
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251 EXPORT int putchar(int c)
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254 return write(_stdout, &c, 1);
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258 * \fn EXPORT int fgetc(FILE *fp)
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259 * \brief Read a character from the stream
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261 EXPORT int fgetc(FILE *fp)
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265 if(read(fp->FD, &ret, 1) == -1) return -1;
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269 EXPORT int getchar(void)
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272 if(read(_stdin, &ret, 1) != 1) return -1;
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276 // --- INTERNAL ---
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278 * \fn FILE *get_file_struct()
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279 * \brief Returns a file descriptor structure
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281 FILE *get_file_struct()
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284 for(i=0;i<STDIO_MAX_STREAMS;i++)
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286 if(_iob[i].Flags == 0) return &_iob[i];
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291 EXPORT int puts(const char *str)
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298 len = write(_stdout, str, len);
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299 write(_stdout, "\n", 1);
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303 EXPORT int vsprintf(char * __s, const char *__format, va_list __args)
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305 return vsnprintf(__s, 0x7FFFFFFF, __format, __args);
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310 * \fn EXPORT void vsnprintf(char *buf, const char *format, va_list args)
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311 * \brief Prints a formatted string to a buffer
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312 * \param buf Pointer - Destination Buffer
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313 * \param format String - Format String
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314 * \param args VarArgs List - Arguments
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316 EXPORT int vsnprintf(char *buf, size_t __maxlen, const char *format, va_list args)
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319 int c, minSize, precision, len;
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324 int bLongLong, bPadLeft;
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326 void _addchar(char ch)
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328 if(buf && pos < __maxlen) buf[pos] = ch;
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334 while((c = *format++) != 0)
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336 // Non-control character
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342 // Control Character
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344 if(c == '%') { // Literal %
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355 // Padding Character
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363 minSize = va_arg(args, size_t);
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367 if('1' <= c && c <= '9')
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370 while('0' <= c && c <= '9')
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373 minSize += c - '0';
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383 precision = va_arg(args, size_t);
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386 else if('1' <= c && c <= '9')
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389 while('0' <= c && c <= '9')
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392 precision += c - '0';
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398 // Check for long long
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408 // Just help things along later
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415 case 'd': case 'i':
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417 if(bLongLong) arg = va_arg(args, int64_t);
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418 else arg = va_arg(args, int32_t);
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419 itoa(tmp, arg, 10, minSize, pad, 1);
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423 // Unsigned Integer
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426 if(bLongLong) arg = va_arg(args, uint64_t);
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427 else arg = va_arg(args, uint32_t);
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428 itoa(tmp, arg, 10, minSize, pad, 0);
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437 arg = va_arg(args, intptr_t);
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438 itoa(tmp, arg, 16, minSize, pad, 0);
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441 // Unsigned Hexadecimal
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443 if(bLongLong) arg = va_arg(args, uint64_t);
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444 else arg = va_arg(args, uint32_t);
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445 itoa(tmp, arg, 16, minSize, pad, 0);
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451 if(bLongLong) arg = va_arg(args, uint64_t);
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452 else arg = va_arg(args, uint32_t);
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453 itoa(tmp, arg, 8, minSize, pad, 0);
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459 if(bLongLong) arg = va_arg(args, uint64_t);
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460 else arg = va_arg(args, uint32_t);
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461 itoa(tmp, arg, 2, minSize, pad, 0);
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467 p = va_arg(args, char*);
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469 if(!p) p = "(null)";
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470 //_SysDebug("vsnprintf: p = '%s'", p);
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472 len = strnlen(p, precision);
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475 if(bPadLeft) while(minSize > len++) _addchar(pad);
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477 if(precision >= 0 && precision -- == 0)
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481 if(!bPadLeft) while(minSize > len++) _addchar(pad);
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484 // Unknown, just treat it as a character
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486 arg = va_arg(args, uint32_t);
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494 //_SysDebug("vsnprintf: buf = '%s'", buf);
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499 const char cUCDIGITS[] = "0123456789ABCDEF";
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501 * \fn static void itoa(char *buf, uint64_t num, int base, int minLength, char pad, int bSigned)
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502 * \brief Convert an integer into a character string
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503 * \param buf Destination Buffer
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504 * \param num Number to convert
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505 * \param base Base-n number output
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506 * \param minLength Minimum length of output
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507 * \param pad Padding used to ensure minLength
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508 * \param bSigned Signed number output?
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510 EXPORT void itoa(char *buf, uint64_t num, size_t base, int minLength, char pad, int bSigned)
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516 if(base > 16 || base < 2) {
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521 if(bSigned && (int64_t)num < 0)
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528 // Encode into reversed string
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529 while(num > base-1) {
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530 tmpBuf[pos++] = cUCDIGITS[ num % base ];
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531 num = (uint64_t) num / (uint64_t)base; // Shift {number} right 1 digit
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534 tmpBuf[pos++] = cUCDIGITS[ num % base ]; // Last digit of {number}
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535 if(bSigned) tmpBuf[pos++] = '-'; // Append sign symbol if needed
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539 while(minLength-- > 0) buf[i++] = pad;
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540 while(pos-- > 0) buf[i++] = tmpBuf[pos]; // Reverse the order of characters
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545 * \fn EXPORT int printf(const char *format, ...)
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546 * \brief Print a string to stdout
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548 EXPORT int printf(const char *format, ...)
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555 va_start(args, format);
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556 size = vsnprintf(NULL, 0, (char*)format, args);
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560 va_start(args, format);
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561 vsnprintf(buf, size+1, (char*)format, args);
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565 write(_stdout, buf, size+1);
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576 va_start(args, format);
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577 ret = fprintfv(stdout, (char*)format, args);
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584 * \fn EXPORT int sprintf(const char *buf, char *format, ...)
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585 * \brief Print a formatted string to a buffer
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587 EXPORT int sprintf(char *buf, const char *format, ...)
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591 va_start(args, format);
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592 ret = vsprintf((char*)buf, (char*)format, args);
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598 * \fn EXPORT int snprintf(const char *buf, size_t maxlen, char *format, ...)
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599 * \brief Print a formatted string to a buffer
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601 EXPORT int snprintf(char *buf, size_t maxlen, const char *format, ...)
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605 va_start(args, format);
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606 ret = vsnprintf((char*)buf, maxlen, (char*)format, args);
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