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24 #ifndef GMQCC_PLATFORM_HDR
25 #define GMQCC_PLATFORM_HDR
27 #ifndef GMQCC_PLATFORM_HEADER
28 # error "This header shouldn't be included!"
31 #undef GMQCC_PLATFORM_HEADER
37 # ifndef STDERR_FILENO
38 # define STDERR_FILENO 2
40 # ifndef STDOUT_FILENO
41 # define STDOUT_FILENO 1
44 # define _WIN32_LEAN_AND_MEAN
51 unsigned short d_reclen;
52 unsigned short d_namlen;
53 char d_name[FILENAME_MAX];
57 struct _finddata_t dd_dta;
65 # endif /*!__MINGW32__*/
68 # define S_ISDIR(X) ((X)&_S_IFDIR)
71 # include <sys/types.h>
72 # include <sys/stat.h>
78 * Function: platform_vsnprintf
79 * Write formatted output using a pointer to a lis of arguments.
82 * buffer - Storage location for output.
83 * bytes - Maximum number of characters to write.
84 * format - Format specification.
85 * arg - Variable argument list.
88 * The number of characters written if the number of characters to write
89 * is less than or equal to `bytes`; if the number of characters to write
90 * is greater than `bytes`, this function returns -1 indicating that the
91 * output has been truncated. The return value does not include the
92 * terminating null, if one is written.
95 * Function takes pointer to an argument list, then formats the data,
96 * and writes up to `bytes` characters to the memory pointed to by
97 * `buffer`. If there is room at the end (that is, if the number of
98 * character to write is less than `bytes`), the buffer will be null-terminated.
100 int platform_vsnprintf(char *buffer, size_t bytes, const char *format, va_list arg);
103 * Function: platform_vsscanf
104 * Reads formatted data from a string.
107 * buffer - Stored data to read.
108 * format - Format specification.
109 * arg - Variable argument list.
112 * The number of fields that are successfully converted and assigned;
113 * the return value does not include fields that were read but not
114 * assigned. A return vlaue of 0 indicated that no fields were assigned.
115 * The return value if EOF for error or if the end of the string is
116 * reached before the first conversion.
119 * Reads data from `buffer` into the locations that are given by each
120 * argument in the `arg` argument list. Every argument in the list must
121 * be a pointer to a variable that has a type that corresponds to a
122 * type specifier in `format`. The `format` argument controls th
123 * interpretation of the input fields and has the same form and function
124 * as the `format` argument for the *scanf* function. If copying takes
125 * place between strings that overlap, the behaviour is undefined.
127 int platform_vsscanf(const char *buffer, const char *format, va_list arg);
130 * Function: platform_localtime
131 * Convert a time value and correct for the local time zone.
134 * timer - Pointer to stored time.
137 * A pointer to a structure result, or NULL if the date passed to
138 * the function is before midnight, January 1, 1970.
140 const struct tm *platform_localtime(const time_t *timer);
143 * Function: platform_ctime
144 * Convert a time value to a string and adjust for local time zone
148 * timer - Pointer to stored time.
151 * Pointer to the character string result. NULL will be returned if time
152 * represents a date before midnight, January 1, 1970, UTC.
155 * Converts a time value stored as a `time_t` value into a chracter string.
156 * The `timer` value is usually obtained from a call to *time*, which returns
157 * the number of seconds since midnight, January 1, 1970 UTC. The return
158 * value of the string contains exactly 26 characters. A 24-hour clock is used.
159 * All fields have constant width. The newline chracter and the null character
160 * occupy the last two positions of the string. The converted character string
161 * is also adjusted according to the local time zone settings.
163 const char *platform_ctime(const time_t *timer);
166 * Function: platform_strncat
167 * Append characters of a string.
170 * dest - Null terminated destination string
171 * src - Source string
172 * num - Number of characters to append
175 * Pointer to the destination string. No return value is used to indicate
179 * Function appends, at mode, the first `num` characters of `src` to
180 * `dest`. The initial character of `src` overwrites the terminating
181 * null chracter of `dest`. If a null character appears in `src` before
182 * `num` chracters are appended, `platform_strncat` appends all chracters
183 * from `src`, up to the null chracter. If `num` is greater than the
184 * length of `src`, the length of `src` is used in place of `num`.
186 char *platform_strncat(char *dest, const char *src, size_t num);
189 * Function: platform_getenv
190 * Get a value from the current enviroment.
193 * var - Enviroment variable name
196 * A pointer to the enviroment table entry containing `var. It's not
197 * safe to modify the value of the enviroment variable using the returned
198 * pointer. The return value is *NULL* if `var` is not found in the
201 const char *platform_getenv(const char *var);
204 * Function: platform_vasprintf
205 * Print to allocated string
208 * dat - Pointer to pointer to store allocated data.
209 * fmt - Format specification.
210 * args - Variable argument list.
213 * Number of character written, -1 is used to indicate an error.
216 * Allocate a string large enough to hold the output including
217 * the terminating null character than write formatted output
218 * to it using format specification.
220 int platform_vasprintf(char **dat, const char *fmt, va_list args);
223 * Function: platform_vfprintf
224 * Write formatted output using a pointer to a list of arguments.
227 * stream - Pointer to stream.
228 * format - Format specification.
229 * atrg - Variable argument list.
232 * Number of characters written, not including the terminating null
233 * character, or a negitive value if an output error occurs. -1 is
234 * also used to indicate an error.
237 * Takes a pointer to an argument list, then formats and writes the
238 * given data to `stream`.
240 int platform_vfprintf(FILE *stream, const char *format, va_list arg);
243 * Function: platform_strcat
244 * Append characters of a string.
247 * dest - Null terminated destination string
248 * src - Source string
251 * Pointer to the destination string. No return value is used to indicate
255 * Appens `src` to `dest` and terminates with resulting null character.
256 * The initial character of `src` overwrites the terminating null
257 * character of `dest`. The behaviour of platform_strcat is undefined
258 * if the source and destination string overlap.
260 char *platform_strcat(char *dest, const char *src);
263 * Function: platform_strncpy
264 * Copys characters of one string to another.
267 * dest - Destination string.
268 * src - Source string.
269 * num - Number of characters to be copied.
272 * `dest`. No return value is reserved to indicate an error.
275 * Copies the initial characters of `src` to `dest` and returns `dest`.
276 * If `num` is less than or equal to the length of `src1 a null character
277 * is not appended automatically to the copied string. If `num` is greater
278 * than the length of `src`, the destination string is padded with null
279 * characters up to length `num`. The behaviour of this function is undefined
280 * if the source and destination strings overlap.
282 char *platform_strncpy(char *dest, const char *src, size_t num);
285 * Function: platform_strerror
286 * Get a system error message
289 * err - Error number.
292 * A pointer to the error message
294 const char *platform_strerror(int err);
297 * Function: platform_fopen
301 * filename - File name.
302 * mode - Kind of access that's enabled.
305 * A pointer to the open file. A null pointer value indicates an error.
307 FILE *platform_fopen(const char *filename, const char *mode);
310 * Function: platform_fread
311 * Reads data from a stream
314 * ptr - Storage location for data.
315 * size - Item size in bytes.
316 * count - Maximum number of items to be read.
317 * stream - Pointer to stream
320 * The number of full items actually read, which may be less than `count`
321 * if an error occurs or if the end of the file is encountered before
322 * reaching `count`. If `size` or `count` is 0, `platform_fread`
323 * returns 0 and the buffer contents are unchanged.
325 size_t platform_fread(void *ptr, size_t size, size_t count, FILE *stream);
328 * Function: platform_fwrite
329 * Writes data to a stream
332 * ptr - Pointer to data to be written.
333 * size - Item size in bytes.
334 * count - Maximum number of items to be read.
335 * stream - Pointer to stream
338 * The number of full items actually written, which may be less than
339 * `count` if an error occurs. Also, if an error occurs, the
340 * file-position indicator cannot be determined.
343 * Writes up to `count` items, of `size` length each, from `ptr` to the
344 * output stream. The file pointer associated with stream (if there is one)
345 * is incremented by the number of bytes actually written.
347 size_t platform_fwrite(const void *ptr, size_t size, size_t count, FILE *stream);
350 * Function: platform_fflush
354 * stream - Pointer to stream
357 * 0 value if the buffer was succesffuly flushed. The value 0 is also
358 * returned in cases in which the specified stream has no buffer or is
359 * open for reading only. A return value of *EOF* indicates an error.
362 * Flushes a stream. If the file associated with stream is open for output,
363 * platform_fflush writes to that file the contents of the buffer
364 * associated with the stream. If the stream is open for input,
365 * platform_fflush clears the contents of the buffer. platform_fflush
366 * negates the effect of any prior call to ungetc against stream. Also,
367 * platform_fflush(NULL) flushes all streams opened for output.
368 * The stream remains open after the call. platform_fflush has no effect
369 * on an unbuffered stream.
371 int platform_fflush(FILE *stream);
374 * Function: platform_fclose
378 * stream - Pointer to stream.
381 * 0 value. *EOF* is used to indicate an error.
386 int platform_fclose(FILE *stream);
389 * Function: platform_ferror
390 * Tests for an error on a stream.
393 * stream - Pointer to stream.
396 * If not error has occured on `stream`, 0 value is returned, otherwise
397 * it returns a nonzero value.
400 * Tests for a reading or writing error on the file associated with `stream`.
401 * If an error has occured, the error indicator for the stream remains set
402 * until the stream is closed or rewound.
404 int platform_ferror(FILE *stream);
407 * Function: platform_fgetc
408 * Read a character from a stream.
411 * stream - Pointer to a stream.
414 * The chracter read as an int or EOF to indicate an error or end-of-file.
417 * Reads a single chracter from the current position of the file associated
418 * with `stream`. Than increments that position. If the steam is at the end
419 * of the file, the end-of-file indicator for the stream is set.
421 int platform_fgetc(FILE *stream);
424 * Function: platform_fputs
425 * Write a string to a stream
428 * str - Output string.
429 * stream - Pointer to stream.
432 * Non-negative value if successful. EOF is used to indicate an error.
435 * Copies `str` to the output stream at the current position.
437 int platform_fputs(const char *str, FILE *stream);
440 * Function: platform_fseek
441 * Moves the file pointer to a specified location.
444 * stream - Pointer to stream.
445 * offset - Number of bytes from origin to offset.
446 * origin - Initital position.
449 * 0 value, nonzero values are used to indicate an error.
452 * Moves the file pointer (if any) associated with stream to a new
453 * location that is offset bytes from origin.
454 * The next operation on the stream takes place at the new location.
455 * On a stream open for update, the next operation can be either a
458 int platform_fseek(FILE *stream, long offset, int origin);
461 * Function: platform_ftell
462 * Gets the current position of a file pointer
465 * stream - Pointer to stream
468 * Current file position. May not reflect physical byte offset, e.g
469 * systems where read-mode does carriage return-linefeed translation.
470 * -1 value is used to indivate an error.
472 long platform_ftell(FILE *stream);
475 * Function: platform_mkdir
479 * path - Path to create
480 * mode - The mode of the directory (implementation defined)
483 * 0 value. -1 value is used to indicate an error. On error no
484 * directory shall be created.
487 * Shall create a new empty directory with with the name path specified
490 int platform_mkdir(const char *path, int mode);
493 * Function: platform_opendir
497 * path - Path to the directory to open
500 * Pointer to an object of type *DIR*. A null pointer value indicates
504 * Shall open a directory stream corresponding to the directory named by
505 * the `path` argument. The directory stream is positioned at the first entry.
507 DIR *platform_opendir(const char *path);
510 * Function: platform_closedir
511 * Close a directory stream
514 * dir - Pointer to directory stream
517 * 0 value. A -1 value indicated an error.
520 * Shall close the directory stream referred to by the argument
521 * `dir`. Upon return, the value of `dir` may no longer point to
522 * an accessible object of the type *DIR*.
524 int platform_closedir(DIR *dir);
527 * Function: platform_readdir
531 * dir - Pointer to directory stream
534 * Pointer to an object of type `struct dirent`. A null pointer value
535 * indicates an error.
538 * When the end of the directory is encountered, a null pointer is
541 struct dirent *platform_readdir(DIR *dir);
544 * Function: platform_isatty
545 * Determines whether a file descriptor is associated with a character
549 * A nonzero value if the descriptor is associated with a character
550 * device. Otherwise `platform_isatty` returns 0.
552 int platform_isatty(int fd);