2 AcessOS Basic C Library
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5 #include <acess/sys.h>
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10 #include "stdio_int.h"
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12 #define DEBUG_BUILD 0
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14 // === CONSTANTS ===
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18 // === PROTOTYPES ===
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19 EXPORT void itoa(char *buf, unsigned long num, int base, int minLength, char pad);
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20 struct sFILE *get_file_struct();
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23 struct sFILE _iob[STDIO_MAX_STREAMS]; // IO Buffer
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24 struct sFILE *stdin; // Standard Input
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25 struct sFILE *stdout; // Standard Output
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26 struct sFILE *stderr; // Standard Error
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27 ///\note Initialised in SoMain
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31 * \fn FILE *freopen(FILE *fp, char *file, char *mode)
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33 EXPORT FILE *freopen(FILE *fp, char *file, char *mode)
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38 // Sanity Check Arguments
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39 if(!fp || !file || !mode) return NULL;
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49 case 'r': fp->Flags = FILE_FLAG_MODE_READ; break;
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50 case 'w': fp->Flags = FILE_FLAG_MODE_WRITE; break;
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51 case 'a': fp->Flags = FILE_FLAG_MODE_APPEND; break;
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52 case 'x': fp->Flags = FILE_FLAG_MODE_EXEC; break;
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57 for(i=1;mode[i];i++)
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61 case '+': fp->Flags |= FILE_FLAG_M_EXT;
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69 case 'r': openFlags = OPENFLAG_READ;
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70 if(fp->Flags & FILE_FLAG_M_EXT)
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71 openFlags |= OPENFLAG_WRITE;
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74 case 'w': openFlags = OPENFLAG_WRITE;
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75 if(fp->Flags & FILE_FLAG_M_EXT)
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76 openFlags |= OPENFLAG_READ;
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79 case 'x': openFlags = OPENFLAG_EXEC;
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84 fp->FD = reopen(fp->FD, file, openFlags);
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90 if(mode[0] == 'a') {
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91 seek(fp->FD, 0, SEEK_END); //SEEK_END
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97 \fn FILE *fopen(char *file, char *mode)
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98 \brief Opens a file and returns the pointer
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99 \param file String - Filename to open
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100 \param mode Mode to open in
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102 EXPORT FILE *fopen(char *file, char *mode)
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106 // Sanity Check Arguments
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107 if(!file || !mode) return NULL;
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109 // Create Return Structure
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110 retFile = get_file_struct();
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112 return freopen(retFile, file, mode);
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115 EXPORT void fclose(FILE *fp)
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121 EXPORT void fflush(FILE *fp)
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127 * \fn int fprintfv(FILE *fp, const char *format, va_list args)
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128 * \brief Print to a file from a variable argument list
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130 EXPORT int fprintfv(FILE *fp, const char *format, va_list args)
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132 va_list tmpList = args;
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136 if(!fp || !format) return -1;
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138 size = ssprintfv((char*)format, tmpList);
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140 buf = (char*)malloc(size+1);
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144 sprintfv(buf, (char*)format, args);
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147 write(fp->FD, size+1, buf);
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152 // Return written byte count
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157 * \fn int fprintf(FILE *fp, const char *format, ...)
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158 * \brief Print a formatted string to a stream
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160 EXPORT int fprintf(FILE *fp, const char *format, ...)
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166 va_start(args, format);
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167 ret = fprintfv(fp, (char*)format, args);
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175 EXPORT size_t fwrite(void *ptr, size_t size, size_t num, FILE *fp)
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178 if(!fp || !fp->FD) return -1;
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180 ret = write(fp->FD, size*num, ptr);
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186 * \fn EXPORT int fputc(int c, FILE *fp)
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187 * \brief Write a single character to the stream
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189 EXPORT int fputc(int c, FILE *fp)
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191 if(!fp || !fp->FD) return -1;
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192 return write(fp->FD, 1, &c);
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196 * \fn EXPORT int fgetc(FILE *fp)
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197 * \brief Read a character from the stream
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199 EXPORT int fgetc(FILE *fp)
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203 if(read(fp->FD, 1, &ret) == -1) return -1;
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207 // --- INTERNAL ---
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209 * \fn FILE *get_file_struct()
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210 * \brief Returns a file descriptor structure
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212 FILE *get_file_struct()
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215 for(i=0;i<STDIO_MAX_STREAMS;i++)
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217 if(_iob[i].Flags == 0) return &_iob[i];
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222 EXPORT int putchar(int ch)
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224 return write(_stdout, 1, (char*)&ch);
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227 EXPORT int puts(const char *str)
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234 len = write(_stdout, len, (char*)str);
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235 write(_stdout, 1, "\n");
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241 \fn EXPORT void sprintfv(char *buf, const char *format, va_list args)
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242 \brief Prints a formatted string to a buffer
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243 \param buf Pointer - Destination Buffer
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244 \param format String - Format String
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245 \param args VarArgs List - Arguments
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247 EXPORT void sprintfv(char *buf, const char *format, va_list args)
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250 int c, arg, minSize;
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257 while((c = *format++) != 0)
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259 //SysDebug("c = '%c'\n", c);
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278 if('1' <= c && c <= '9')
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280 while('0' <= c && c <= '9')
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283 minSize += c - '0';
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291 arg = va_arg(args, int);
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300 itoa(tmp, arg, 10, minSize, pad);
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304 itoa(tmp, arg, 10, minSize, pad);
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307 case 'p': // Pointer
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312 itoa(tmp, arg, 16, minSize, pad);
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316 itoa(tmp, arg, 8, minSize, pad);
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320 itoa(tmp, arg, 2, minSize, pad);
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327 if(!p) p = "(null)";
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328 while(*p) buf[pos++] = *p++;
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340 - Size, Stream, Print Formated, Variable Argument List
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343 \fn EXPORT int ssprintfv(char *format, va_list args)
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344 \brief Gets the total character count from a formatted string
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345 \param format String - Format String
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346 \param args VarArgs - Argument List
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348 EXPORT int ssprintfv(char *format, va_list args)
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351 int c, arg, minSize;
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358 while((c = *format++) != 0)
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380 if('1' <= c && c <= '9')
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382 while('0' <= c && c <= '9')
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385 minSize += c - '0';
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391 arg = va_arg(args, int);
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399 itoa(tmp, arg, 10, minSize, pad);
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402 itoa(tmp, arg, 10, minSize, pad);
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404 case 'p': // Pointer
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407 itoa(tmp, arg, 16, minSize, pad);
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410 itoa(tmp, arg, 8, minSize, pad);
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414 itoa(tmp, arg, 2, minSize, pad);
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420 if(!p) p = "(null)";
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421 while(*p) len++, p++;
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432 const char cUCDIGITS[] = "0123456789ABCDEF";
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434 * \fn static void itoa(char *buf, unsigned long num, int base, int minLength, char pad)
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435 * \brief Convert an integer into a character string
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437 EXPORT void itoa(char *buf, unsigned long num, int base, int minLength, char pad)
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448 while(num > base-1) {
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449 tmpBuf[pos] = cUCDIGITS[ num % base ];
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450 num = (long) num / base; //Shift {number} right 1 digit
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454 tmpBuf[pos++] = cUCDIGITS[ num % base ]; //Last digit of {number}
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457 while(minLength-- > 0) buf[i++] = pad;
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458 while(pos-- > 0) buf[i++] = tmpBuf[pos]; //Reverse the order of characters
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463 * \fn EXPORT int printf(const char *format, ...)
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464 * \brief Print a string to stdout
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466 EXPORT int printf(const char *format, ...)
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473 va_start(args, format);
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474 size = ssprintfv((char*)format, args);
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477 buf = (char*)malloc(size+1);
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480 va_start(args, format);
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481 sprintfv(buf, (char*)format, args);
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485 write(_stdout, size+1, buf);
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494 va_start(args, format);
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495 ret = fprintfv(stdout, (char*)format, args);
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502 * \fn EXPORT int sprintf(const char *buf, char *format, ...)
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503 * \brief Print a formatted string to a buffer
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505 EXPORT int sprintf(char *buf, const char *format, ...)
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508 va_start(args, format);
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509 sprintfv((char*)buf, (char*)format, args);
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