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, int 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(FILE *fp, char *file, char *mode)
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34 EXPORT FILE *freopen(FILE *fp, char *file, char *mode)
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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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85 fp->FD = reopen(fp->FD, file, openFlags);
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91 if(mode[0] == 'a') {
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92 seek(fp->FD, 0, SEEK_END); //SEEK_END
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98 \fn FILE *fopen(char *file, char *mode)
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99 \brief Opens a file and returns the pointer
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100 \param file String - Filename to open
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101 \param mode Mode to open in
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103 EXPORT FILE *fopen(char *file, char *mode)
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107 // Sanity Check Arguments
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108 if(!file || !mode) return NULL;
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110 // Create Return Structure
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111 retFile = get_file_struct();
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113 return freopen(retFile, file, mode);
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116 EXPORT void fclose(FILE *fp)
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122 EXPORT void fflush(FILE *fp)
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128 * \fn EXPORT int vfprintf(FILE *fp, const char *format, va_list args)
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129 * \brief Print to a file from a variable argument list
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131 EXPORT int vfprintf(FILE *fp, const char *format, va_list args)
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133 va_list tmpList = args;
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137 if(!fp || !format) return -1;
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139 size = vsprintf(NULL, (char*)format, tmpList);
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141 buf = (char*)malloc(size+1);
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145 vsprintf(buf, (char*)format, args);
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148 write(fp->FD, size+1, buf);
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153 // Return written byte count
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158 * \fn int fprintf(FILE *fp, const char *format, ...)
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159 * \brief Print a formatted string to a stream
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161 EXPORT int fprintf(FILE *fp, const char *format, ...)
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167 va_start(args, format);
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168 ret = vfprintf(fp, (char*)format, args);
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176 EXPORT size_t fwrite(void *ptr, size_t size, size_t num, FILE *fp)
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179 if(!fp || !fp->FD) return -1;
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181 ret = write(fp->FD, size*num, ptr);
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187 * \fn EXPORT int fputc(int c, FILE *fp)
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188 * \brief Write a single character to the stream
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190 EXPORT int fputc(int c, FILE *fp)
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192 if(!fp || !fp->FD) return -1;
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193 return write(fp->FD, 1, &c);
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197 * \fn EXPORT int fgetc(FILE *fp)
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198 * \brief Read a character from the stream
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200 EXPORT int fgetc(FILE *fp)
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204 if(read(fp->FD, 1, &ret) == -1) return -1;
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208 // --- INTERNAL ---
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210 * \fn FILE *get_file_struct()
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211 * \brief Returns a file descriptor structure
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213 FILE *get_file_struct()
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216 for(i=0;i<STDIO_MAX_STREAMS;i++)
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218 if(_iob[i].Flags == 0) return &_iob[i];
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223 EXPORT int putchar(int ch)
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225 return write(_stdout, 1, (char*)&ch);
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228 EXPORT int puts(const char *str)
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235 len = write(_stdout, len, (char*)str);
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236 write(_stdout, 1, "\n");
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242 \fn EXPORT void vsprintf(char *buf, const char *format, va_list args)
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243 \brief Prints a formatted string to a buffer
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244 \param buf Pointer - Destination Buffer
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245 \param format String - Format String
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246 \param args VarArgs List - Arguments
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248 EXPORT int vsprintf(char *buf, const char *format, va_list args)
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260 while((c = *format++) != 0)
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262 // Non-control character
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264 if(buf) buf[pos] = c;
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269 // Control Character
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271 if(c == '%') { // Literal %
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272 if(buf) buf[pos] = '%';
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284 if('1' <= c && c <= '9')
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286 while('0' <= c && c <= '9')
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289 minSize += c - '0';
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294 // Check for long long
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310 case 'd': case 'i':
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312 if(bLongLong) arg = va_arg(args, int64_t);
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313 else arg = va_arg(args, int32_t);
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314 itoa(tmp, arg, 10, minSize, pad, 1);
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317 // Unsigned Integer
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320 if(bLongLong) arg = va_arg(args, uint64_t);
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321 else arg = va_arg(args, uint32_t);
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322 itoa(tmp, arg, 10, minSize, pad, 0);
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333 // Fall through to hex
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334 // Unsigned Hexadecimal
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336 if(bLongLong) arg = va_arg(args, uint64_t);
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337 else arg = va_arg(args, uint32_t);
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338 itoa(tmp, arg, 16, minSize, pad, 0);
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343 if(bLongLong) arg = va_arg(args, uint64_t);
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344 else arg = va_arg(args, uint32_t);
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345 itoa(tmp, arg, 8, minSize, pad, 0);
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350 if(bLongLong) arg = va_arg(args, uint64_t);
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351 else arg = va_arg(args, uint32_t);
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352 itoa(tmp, arg, 2, minSize, pad, 0);
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357 arg = va_arg(args, uint32_t);
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358 p = (void*)(intptr_t)arg;
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360 if(!p) p = "(null)";
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373 // Unknown, just treat it as a character
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375 arg = va_arg(args, uint32_t);
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376 if(buf) buf[pos] = arg;
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381 if(buf) buf[pos] = '\0';
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386 const char cUCDIGITS[] = "0123456789ABCDEF";
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388 * \fn static void itoa(char *buf, uint64_t num, int base, int minLength, char pad, int bSigned)
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389 * \brief Convert an integer into a character string
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391 EXPORT void itoa(char *buf, uint64_t num, int base, int minLength, char pad, int bSigned)
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402 if(bSigned && (int64_t)num < 0)
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409 while(num > base-1) {
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410 tmpBuf[pos] = cUCDIGITS[ num % base ];
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411 num = (long) num / base; // Shift {number} right 1 digit
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415 tmpBuf[pos++] = cUCDIGITS[ num % base ]; // Last digit of {number}
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416 if(bSigned) tmpBuf[pos++] = '-'; // Append sign symbol if needed
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419 while(minLength-- > 0) buf[i++] = pad;
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420 while(pos-- > 0) buf[i++] = tmpBuf[pos]; // Reverse the order of characters
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425 * \fn EXPORT int printf(const char *format, ...)
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426 * \brief Print a string to stdout
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428 EXPORT int printf(const char *format, ...)
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436 va_start(args, format);
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437 size = vsprintf(NULL, (char*)format, args);
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441 buf = (char*)malloc(size+1);
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445 va_start(args, format);
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446 vsprintf(buf, (char*)format, args);
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450 write(_stdout, size+1, buf);
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461 va_start(args, format);
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462 ret = fprintfv(stdout, (char*)format, args);
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469 * \fn EXPORT int sprintf(const char *buf, char *format, ...)
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470 * \brief Print a formatted string to a buffer
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472 EXPORT int sprintf(char *buf, const char *format, ...)
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476 va_start(args, format);
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477 ret = vsprintf((char*)buf, (char*)format, args);
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