author | peter1138 |
Sun, 29 Jan 2006 09:52:54 +0000 | |
changeset 2910 | 4fc113a45e76 |
parent 2736 | 1ea068235989 |
child 2952 | 6a26eeda9679 |
permissions | -rw-r--r-- |
2186 | 1 |
/* $Id$ */ |
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#include "stdafx.h" |
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#include "openttd.h" |
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#include "fileio.h" |
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#include "functions.h" |
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#include "macros.h" |
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#include "variables.h" |
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#if defined(UNIX) || defined(__OS2__) |
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#include <ctype.h> // required for tolower() |
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#endif |
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/*************************************************/ |
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/* FILE IO ROUTINES ******************************/ |
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/*************************************************/ |
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#define FIO_BUFFER_SIZE 512 |
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typedef struct { |
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byte *buffer, *buffer_end; |
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uint32 pos; |
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FILE *cur_fh; |
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FILE *handles[32]; |
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byte buffer_start[512]; |
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} Fio; |
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static Fio _fio; |
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// Get current position in file |
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uint32 FioGetPos(void) |
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{ |
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return _fio.pos + (_fio.buffer - _fio.buffer_start) - FIO_BUFFER_SIZE; |
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} |
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void FioSeekTo(uint32 pos, int mode) |
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{ |
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if (mode == SEEK_CUR) pos += FioGetPos(); |
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_fio.buffer = _fio.buffer_end = _fio.buffer_start + FIO_BUFFER_SIZE; |
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fseek(_fio.cur_fh, (_fio.pos=pos), SEEK_SET); |
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} |
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// Seek to a file and a position |
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void FioSeekToFile(uint32 pos) |
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44 |
{ |
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FILE *f = _fio.handles[pos >> 24]; |
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assert(f != NULL); |
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_fio.cur_fh = f; |
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FioSeekTo(pos & 0xFFFFFF, SEEK_SET); |
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} |
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byte FioReadByte(void) |
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{ |
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if (_fio.buffer == _fio.buffer_end) { |
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_fio.pos += FIO_BUFFER_SIZE; |
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fread(_fio.buffer = _fio.buffer_start, 1, FIO_BUFFER_SIZE, _fio.cur_fh); |
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} |
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return *_fio.buffer++; |
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} |
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void FioSkipBytes(int n) |
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{ |
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for(;;) { |
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int m = min(_fio.buffer_end - _fio.buffer, n); |
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_fio.buffer += m; |
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n -= m; |
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if (n == 0) break; |
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FioReadByte(); |
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n--; |
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} |
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} |
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uint16 FioReadWord(void) |
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{ |
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byte b = FioReadByte(); |
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return (FioReadByte() << 8) | b; |
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} |
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uint32 FioReadDword(void) |
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{ |
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uint b = FioReadWord(); |
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return (FioReadWord() << 16) | b; |
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} |
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void FioReadBlock(void *ptr, uint size) |
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86 |
{ |
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FioSeekTo(FioGetPos(), SEEK_SET); |
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_fio.pos += size; |
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fread(ptr, 1, size, _fio.cur_fh); |
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} |
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static inline void FioCloseFile(int slot) |
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{ |
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if (_fio.handles[slot] != NULL) { |
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fclose(_fio.handles[slot]); |
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_fio.handles[slot] = NULL; |
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} |
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} |
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|
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void FioCloseAll(void) |
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{ |
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int i; |
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for (i = 0; i != lengthof(_fio.handles); i++) |
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FioCloseFile(i); |
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} |
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bool FiosCheckFileExists(const char *filename) |
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{ |
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FILE *f; |
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char buf[MAX_PATH]; |
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sprintf(buf, "%s%s", _path.data_dir, filename); |
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f = fopen(buf, "rb"); |
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#if !defined(WIN32) |
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if (f == NULL) { |
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char *s; |
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// Make lower case and try again |
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for(s=buf + strlen(_path.data_dir) - 1; *s != 0; s++) |
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*s = tolower(*s); |
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f = fopen(buf, "rb"); |
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#if defined SECOND_DATA_DIR |
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// tries in the 2nd data directory |
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if (f == NULL) { |
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sprintf(buf, "%s%s", _path.second_data_dir, filename); |
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for(s=buf + strlen(_path.second_data_dir) - 1; *s != 0; s++) |
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*s = tolower(*s); |
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f = fopen(buf, "rb"); |
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} |
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#endif |
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} |
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#endif |
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|
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if (f == NULL) |
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return false; |
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else { |
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fclose(f); |
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return true; |
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} |
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} |
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FILE *FioFOpenFile(const char *filename) |
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{ |
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FILE *f; |
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char buf[MAX_PATH]; |
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sprintf(buf, "%s%s", _path.data_dir, filename); |
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f = fopen(buf, "rb"); |
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#if !defined(WIN32) |
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if (f == NULL) { |
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char *s; |
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// Make lower case and try again |
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for(s=buf + strlen(_path.data_dir) - 1; *s != 0; s++) |
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*s = tolower(*s); |
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f = fopen(buf, "rb"); |
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#if defined SECOND_DATA_DIR |
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// tries in the 2nd data directory |
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if (f == NULL) { |
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sprintf(buf, "%s%s", _path.second_data_dir, filename); |
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for(s=buf + strlen(_path.second_data_dir) - 1; *s != 0; s++) |
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*s = tolower(*s); |
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f = fopen(buf, "rb"); |
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} |
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#endif |
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} |
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#endif |
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return f; |
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} |
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|
0 | 175 |
void FioOpenFile(int slot, const char *filename) |
176 |
{ |
|
177 |
FILE *f; |
|
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char buf[MAX_PATH]; |
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sprintf(buf, "%s%s", _path.data_dir, filename); |
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f = fopen(buf, "rb"); |
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#if !defined(WIN32) |
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if (f == NULL) { |
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char *s; |
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// Make lower case and try again |
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for(s=buf + strlen(_path.data_dir) - 1; *s != 0; s++) |
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*s = tolower(*s); |
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f = fopen(buf, "rb"); |
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915 | 190 |
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#if defined SECOND_DATA_DIR |
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// tries in the 2nd data directory |
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if (f == NULL) { |
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sprintf(buf, "%s%s", _path.second_data_dir, filename); |
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for(s=buf + strlen(_path.second_data_dir) - 1; *s != 0; s++) |
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*s = tolower(*s); |
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f = fopen(buf, "rb"); |
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} |
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|
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if (f == NULL) |
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sprintf(buf, "%s%s", _path.data_dir, filename); //makes it print the primary datadir path instead of the secundary one |
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202 |
|
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#endif |
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} |
205 |
#endif |
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if (f == NULL) |
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208 |
error("Cannot open file '%s'", buf); |
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diff
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|
209 |
|
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210 |
FioCloseFile(slot); // if file was opened before, close it |
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_fio.handles[slot] = f; |
212 |
FioSeekToFile(slot << 24); |
|
213 |
} |