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 DEBUG_BUILD 0
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15 // === CONSTANTS ===
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19 // === PROTOTYPES ===
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20 EXPORT void itoa(char *buf, uint64_t num, uint base, int minLength, char pad, int bSigned);
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21 struct sFILE *get_file_struct();
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24 struct sFILE _iob[STDIO_MAX_STREAMS]; // IO Buffer
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25 struct sFILE *stdin; // Standard Input
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26 struct sFILE *stdout; // Standard Output
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27 struct sFILE *stderr; // Standard Error
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28 ///\note Initialised in SoMain
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32 * \fn FILE *freopen(char *file, char *mode, FILE *fp)
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34 EXPORT FILE *freopen(const char *file, const char *mode, FILE *fp)
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39 // Sanity Check Arguments
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40 if(!fp || !file || !mode) return NULL;
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50 case 'r': fp->Flags = FILE_FLAG_MODE_READ; break;
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51 case 'w': fp->Flags = FILE_FLAG_MODE_WRITE; break;
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52 case 'a': fp->Flags = FILE_FLAG_MODE_APPEND; break;
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53 case 'x': fp->Flags = FILE_FLAG_MODE_EXEC; break;
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58 for(i=1;mode[i];i++)
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62 case '+': fp->Flags |= FILE_FLAG_M_EXT;
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70 case 'r': openFlags = OPENFLAG_READ;
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71 if(fp->Flags & FILE_FLAG_M_EXT)
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72 openFlags |= OPENFLAG_WRITE;
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75 case 'w': openFlags = OPENFLAG_WRITE;
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76 if(fp->Flags & FILE_FLAG_M_EXT)
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77 openFlags |= OPENFLAG_READ;
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80 case 'x': openFlags = OPENFLAG_EXEC;
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86 fp->FD = reopen(fp->FD, file, openFlags);
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88 fp->FD = open(file, openFlags);
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94 if(mode[0] == 'a') {
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95 seek(fp->FD, 0, SEEK_END); //SEEK_END
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101 \fn FILE *fopen(const char *file, const char *mode)
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102 \brief Opens a file and returns the pointer
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103 \param file String - Filename to open
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104 \param mode Mode to open in
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106 EXPORT FILE *fopen(const char *file, const char *mode)
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110 // Sanity Check Arguments
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111 if(!file || !mode) return NULL;
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113 // Create Return Structure
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114 retFile = get_file_struct();
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116 return freopen(file, mode, retFile);
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119 EXPORT void fclose(FILE *fp)
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125 EXPORT void fflush(FILE *fp)
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130 EXPORT long int ftell(FILE *fp)
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132 if(!fp || !fp->FD) return -1;
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134 return tell(fp->FD);
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137 EXPORT int fseek(FILE *fp, long int amt, int whence)
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139 if(!fp || !fp->FD) return -1;
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141 return seek(fp->FD, amt, whence);
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146 * \fn EXPORT int vfprintf(FILE *fp, const char *format, va_list args)
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147 * \brief Print to a file from a variable argument list
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149 EXPORT int vfprintf(FILE *fp, const char *format, va_list args)
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158 if(!fp || !format) return -1;
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160 va_copy(tmpList, args);
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162 size = vsnprintf(sbuf, 1024, (char*)format, tmpList);
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166 buf = (char*)malloc(size+1);
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168 write(_stdout, 31, "vfprintf ERROR: malloc() failed");
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174 vsnprintf(buf, size+1, (char*)format, args);
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178 write(fp->FD, size, buf);
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183 // Return written byte count
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188 * \fn int fprintf(FILE *fp, const char *format, ...)
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189 * \brief Print a formatted string to a stream
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191 EXPORT int fprintf(FILE *fp, const char *format, ...)
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197 va_start(args, format);
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198 ret = vfprintf(fp, (char*)format, args);
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205 * \fn EXPORT size_t fwrite(void *ptr, size_t size, size_t num, FILE *fp)
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206 * \brief Write to a stream
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208 EXPORT size_t fwrite(void *ptr, size_t size, size_t num, FILE *fp)
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211 if(!fp || !fp->FD) return -1;
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213 ret = write(fp->FD, size*num, ptr);
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219 * \fn EXPORT size_t fread(void *ptr, size_t size, size_t num, FILE *fp)
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220 * \brief Read from a stream
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222 EXPORT size_t fread(void *ptr, size_t size, size_t num, FILE *fp)
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225 if(!fp || !fp->FD) return -1;
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227 ret = read(fp->FD, size*num, ptr);
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233 * \fn EXPORT int fputc(int c, FILE *fp)
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234 * \brief Write a single character to the stream
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236 EXPORT int fputc(int c, FILE *fp)
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238 if(!fp || !fp->FD) return -1;
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239 return write(fp->FD, 1, &c);
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243 * \fn EXPORT int fgetc(FILE *fp)
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244 * \brief Read a character from the stream
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246 EXPORT int fgetc(FILE *fp)
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250 if(read(fp->FD, 1, &ret) == -1) return -1;
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254 // --- INTERNAL ---
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256 * \fn FILE *get_file_struct()
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257 * \brief Returns a file descriptor structure
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259 FILE *get_file_struct()
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262 for(i=0;i<STDIO_MAX_STREAMS;i++)
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264 if(_iob[i].Flags == 0) return &_iob[i];
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269 EXPORT int putchar(int ch)
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271 return write(_stdout, 1, (char*)&ch);
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274 EXPORT int puts(const char *str)
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281 len = write(_stdout, len, (char*)str);
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282 write(_stdout, 1, "\n");
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286 EXPORT int vsprintf(char * __s, const char *__format, va_list __args)
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288 return vsnprintf(__s, 0x7FFFFFFF, __format, __args);
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293 * \fn EXPORT void vsnprintf(char *buf, const char *format, va_list args)
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294 * \brief Prints a formatted string to a buffer
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295 * \param buf Pointer - Destination Buffer
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296 * \param format String - Format String
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297 * \param args VarArgs List - Arguments
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299 EXPORT int vsnprintf(char *buf, size_t __maxlen, const char *format, va_list args)
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311 while((c = *format++) != 0)
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313 // Non-control character
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315 if(buf && pos < __maxlen) buf[pos] = c;
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320 // Control Character
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322 if(c == '%') { // Literal %
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323 if(buf && pos < __maxlen) buf[pos] = '%';
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335 if('1' <= c && c <= '9')
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337 while('0' <= c && c <= '9')
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340 minSize += c - '0';
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345 // Check for long long
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361 case 'd': case 'i':
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363 if(bLongLong) arg = va_arg(args, int64_t);
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364 else arg = va_arg(args, int32_t);
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365 itoa(tmp, arg, 10, minSize, pad, 1);
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368 // Unsigned Integer
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371 if(bLongLong) arg = va_arg(args, uint64_t);
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372 else arg = va_arg(args, uint32_t);
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373 itoa(tmp, arg, 10, minSize, pad, 0);
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378 if(buf && pos+2 < __maxlen) {
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384 arg = va_arg(args, uint32_t);
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385 itoa(tmp, arg, 16, minSize, pad, 0);
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387 // Fall through to hex
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388 // Unsigned Hexadecimal
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390 if(bLongLong) arg = va_arg(args, uint64_t);
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391 else arg = va_arg(args, uint32_t);
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392 itoa(tmp, arg, 16, minSize, pad, 0);
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397 if(bLongLong) arg = va_arg(args, uint64_t);
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398 else arg = va_arg(args, uint32_t);
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399 itoa(tmp, arg, 8, minSize, pad, 0);
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404 if(bLongLong) arg = va_arg(args, uint64_t);
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405 else arg = va_arg(args, uint32_t);
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406 itoa(tmp, arg, 2, minSize, pad, 0);
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411 arg = va_arg(args, uint32_t);
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412 p = (void*)(intptr_t)arg;
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414 if(!p) p = "(null)";
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415 //_SysDebug("vsnprintf: p = '%s'", p);
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418 if(pos < __maxlen) buf[pos] = *p;
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429 // Unknown, just treat it as a character
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431 arg = va_arg(args, uint32_t);
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432 if(buf && pos < __maxlen) buf[pos] = arg;
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437 if(buf && pos < __maxlen) buf[pos] = '\0';
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439 //_SysDebug("vsnprintf: buf = '%s'", buf);
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444 const char cUCDIGITS[] = "0123456789ABCDEF";
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446 * \fn static void itoa(char *buf, uint64_t num, int base, int minLength, char pad, int bSigned)
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447 * \brief Convert an integer into a character string
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448 * \param buf Destination Buffer
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449 * \param num Number to convert
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450 * \param base Base-n number output
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451 * \param minLength Minimum length of output
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452 * \param pad Padding used to ensure minLength
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453 * \param bSigned Signed number output?
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455 EXPORT void itoa(char *buf, uint64_t num, size_t base, int minLength, char pad, int bSigned)
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461 if(base > 16 || base < 2) {
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466 if(bSigned && (int64_t)num < 0)
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473 // Encode into reversed string
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474 while(num > base-1) {
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475 tmpBuf[pos++] = cUCDIGITS[ num % base ];
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476 num = (uint64_t) num / (uint64_t)base; // Shift {number} right 1 digit
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479 tmpBuf[pos++] = cUCDIGITS[ num % base ]; // Last digit of {number}
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480 if(bSigned) tmpBuf[pos++] = '-'; // Append sign symbol if needed
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484 while(minLength-- > 0) buf[i++] = pad;
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485 while(pos-- > 0) buf[i++] = tmpBuf[pos]; // Reverse the order of characters
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490 * \fn EXPORT int printf(const char *format, ...)
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491 * \brief Print a string to stdout
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493 EXPORT int printf(const char *format, ...)
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502 va_start(args, format);
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503 size = vsnprintf(sbuf, 1024, (char*)format, args);
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506 if( size >= 1024 ) {
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508 buf = (char*)malloc(size+1);
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510 write(_stdout, 29, "PRINTF ERROR: malloc() failed");
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516 va_start(args, format);
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517 vsnprintf(buf, size+1, (char*)format, args);
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522 write(_stdout, size+1, buf);
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533 va_start(args, format);
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534 ret = fprintfv(stdout, (char*)format, args);
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541 * \fn EXPORT int sprintf(const char *buf, char *format, ...)
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542 * \brief Print a formatted string to a buffer
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544 EXPORT int sprintf(char *buf, const char *format, ...)
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548 va_start(args, format);
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549 ret = vsprintf((char*)buf, (char*)format, args);
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555 * \fn EXPORT int snprintf(const char *buf, size_t maxlen, char *format, ...)
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556 * \brief Print a formatted string to a buffer
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558 EXPORT int snprintf(char *buf, size_t maxlen, const char *format, ...)
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562 va_start(args, format);
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563 ret = vsnprintf((char*)buf, maxlen, (char*)format, args);
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