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grafX2/src/io.c
Thomas Bernard 3d74c5201f
fix Calculate_relative_path()
2020-02-26 00:36:11 +01:00

1283 lines
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C
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/* vim:expandtab:ts=2 sw=2:
*/
/* Grafx2 - The Ultimate 256-color bitmap paint program
Copyright 2018 Thomas Bernard
Copyright 2011 Pawel Góralski
Copyright 2008 Yves Rizoud
Copyright 2007 Adrien Destugues
Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
Grafx2 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2
of the License.
Grafx2 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Grafx2; if not, see <http://www.gnu.org/licenses/>
*/
// Fonctions de lecture/ecriture file, gèrent les systèmes big-endian et
// little-endian.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#ifndef _MSC_VER
#include <unistd.h>
#else
#define strdup _strdup
#if _MSC_VER < 1900
#define snprintf _snprintf
#endif
#endif
#if defined(__amigaos4__) || defined(__AROS__) || defined(__MORPHOS__) || defined(__amigaos__)
#include <proto/dos.h>
#include <sys/types.h>
#include <dirent.h>
#elif defined(WIN32)
#ifdef _MSC_VER
#include <direct.h>
#else
#include <dirent.h>
#endif
#include <windows.h>
//#include <commdlg.h>
#elif defined(__MINT__)
#include <mint/osbind.h>
#include <mint/sysbind.h>
#include <dirent.h>
#else
#include <dirent.h>
#endif
#if defined(USE_SDL) || defined(USE_SDL2)
#include <SDL_endian.h>
#endif
#include "struct.h"
#include "io.h"
#include "realpath.h"
#include "unicode.h"
#include "global.h"
#include "gfx2log.h"
#include "gfx2mem.h"
// for the network browse
#include "fileseltools.h"
// Lit un octet
// Renvoie -1 si OK, 0 en cas d'erreur
int Read_byte(FILE *file, byte *dest)
{
return fread(dest, 1, 1, file) == 1;
}
// Ecrit un octet
// Renvoie -1 si OK, 0 en cas d'erreur
int Write_byte(FILE *file, byte b)
{
return fwrite(&b, 1, 1, file) == 1;
}
// Lit des octets
// Renvoie -1 si OK, 0 en cas d'erreur
int Read_bytes(FILE *file, void *dest, size_t size)
{
return fread(dest, 1, size, file) == size;
}
// Read a line
// returns -1 if OK, 0 in case of error
int Read_byte_line(FILE *file, char *line, size_t size)
{
return fgets(line, size, file) != NULL;
}
// Ecrit des octets
// Renvoie -1 si OK, 0 en cas d'erreur
int Write_bytes(FILE *file, const void *src, size_t size)
{
return fwrite(src, 1, size, file) == size;
}
// Lit un word (little-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Read_word_le(FILE *file, word *dest)
{
#if defined(USE_SDL) || defined(USE_SDL2)
if (fread(dest, 1, sizeof(word), file) != sizeof(word))
return 0;
#if SDL_BYTEORDER != SDL_LIL_ENDIAN
*dest = SDL_Swap16(*dest);
#endif
return -1;
#else
byte buffer[2];
if (fread(buffer, 1, 2, file) != 2)
return 0;
*dest = (word)buffer[0] | (word)buffer[1] << 8;
return -1;
#endif
}
// Ecrit un word (little-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Write_word_le(FILE *file, word w)
{
#if defined(USE_SDL) || defined(USE_SDL2)
#if SDL_BYTEORDER != SDL_LIL_ENDIAN
w = SDL_Swap16(w);
#endif
return fwrite(&w, 1, sizeof(word), file) == sizeof(word);
#else
if (fputc((w >> 0) & 0xff, file) == EOF)
return 0;
if (fputc((w >> 8) & 0xff, file) == EOF)
return 0;
return -1;
#endif
}
// Lit un word (big-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Read_word_be(FILE *file, word *dest)
{
#if defined(USE_SDL) || defined(USE_SDL2)
if (fread(dest, 1, sizeof(word), file) != sizeof(word))
return 0;
#if SDL_BYTEORDER != SDL_BIG_ENDIAN
*dest = SDL_Swap16(*dest);
#endif
return -1;
#else
byte buffer[2];
if (fread(buffer, 1, 2, file) != 2)
return 0;
*dest = (word)buffer[0] << 8 | (word)buffer[1];
return -1;
#endif
}
// Ecrit un word (big-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Write_word_be(FILE *file, word w)
{
#if defined(USE_SDL) || defined(USE_SDL2)
#if SDL_BYTEORDER != SDL_BIG_ENDIAN
w = SDL_Swap16(w);
#endif
return fwrite(&w, 1, sizeof(word), file) == sizeof(word);
#else
if (fputc((w >> 8) & 0xff, file) == EOF)
return 0;
if (fputc((w >> 0) & 0xff, file) == EOF)
return 0;
return -1;
#endif
}
// Lit un dword (little-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Read_dword_le(FILE *file, dword *dest)
{
#if defined(USE_SDL) || defined(USE_SDL2)
if (fread(dest, 1, sizeof(dword), file) != sizeof(dword))
return 0;
#if SDL_BYTEORDER != SDL_LIL_ENDIAN
*dest = SDL_Swap32(*dest);
#endif
return -1;
#else
byte buffer[4];
if (fread(buffer, 1, 4, file) != 4)
return 0;
*dest = (dword)buffer[0] | (dword)buffer[1] << 8 | (dword)buffer[2] << 16 | (dword)buffer[3] << 24;
return -1;
#endif
}
// Ecrit un dword (little-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Write_dword_le(FILE *file, dword dw)
{
#if defined(USE_SDL) || defined(USE_SDL2)
#if SDL_BYTEORDER != SDL_LIL_ENDIAN
dw = SDL_Swap32(dw);
#endif
return fwrite(&dw, 1, sizeof(dword), file) == sizeof(dword);
#else
if (fputc((dw >> 0) & 0xff, file) == EOF)
return 0;
if (fputc((dw >> 8) & 0xff, file) == EOF)
return 0;
if (fputc((dw >> 16) & 0xff, file) == EOF)
return 0;
if (fputc((dw >> 24) & 0xff, file) == EOF)
return 0;
return -1;
#endif
}
// Lit un dword (big-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Read_dword_be(FILE *file, dword *dest)
{
#if defined(USE_SDL) || defined(USE_SDL2)
if (fread(dest, 1, sizeof(dword), file) != sizeof(dword))
return 0;
#if SDL_BYTEORDER != SDL_BIG_ENDIAN
*dest = SDL_Swap32(*dest);
#endif
return -1;
#else
byte buffer[4];
if (fread(buffer, 1, 4, file) != 4)
return 0;
*dest = (dword)buffer[0] << 24 | (dword)buffer[1] << 16 | (dword)buffer[2] << 8 | (dword)buffer[3];
return -1;
#endif
}
// Ecrit un dword (big-endian)
// Renvoie -1 si OK, 0 en cas d'erreur
int Write_dword_be(FILE *file, dword dw)
{
#if defined(USE_SDL) || defined(USE_SDL2)
#if SDL_BYTEORDER != SDL_BIG_ENDIAN
dw = SDL_Swap32(dw);
#endif
return fwrite(&dw, 1, sizeof(dword), file) == sizeof(dword);
#else
if (fputc((dw >> 24) & 0xff, file) == EOF)
return 0;
if (fputc((dw >> 16) & 0xff, file) == EOF)
return 0;
if (fputc((dw >> 8) & 0xff, file) == EOF)
return 0;
if (fputc((dw >> 0) & 0xff, file) == EOF)
return 0;
return -1;
#endif
}
// Détermine la position du dernier '/' ou '\\' dans une chaine,
// typiquement pour séparer le nom de file d'un chemin.
// Attention, sous Windows, il faut s'attendre aux deux car
// par exemple un programme lancé sous GDB aura comme argv[0]:
// d:\Data\C\GFX2\grafx2/grafx2.exe
char * Find_last_separator(const char * str)
{
const char * position = NULL;
if (str == NULL)
return NULL;
for (; *str != '\0'; str++)
if (*str == PATH_SEPARATOR[0]
#if defined(__WIN32__) || defined(WIN32)
|| *str == '/'
#elif __AROS__
|| *str == ':'
#endif
)
position = str;
return (char *)position;
}
word * Find_last_separator_unicode(const word * str)
{
const word * position = NULL;
for (; *str != 0; str++)
if (*str == (byte)PATH_SEPARATOR[0]
#if defined(__WIN32__) || defined(WIN32)
|| *str == '/'
#elif __AROS__
|| *str == ':'
#endif
)
position = str;
return (word *)position;
}
char * Filepath_append_to_dir(const char * dir, const char * filename)
{
char * path;
size_t len = dir == NULL ? 0 : strlen(dir);
if (len == 0) // no directory
return strdup(filename);
if (dir[len-1] == PATH_SEPARATOR[0]
#if defined(__WIN32__) || defined(WIN32)
|| dir[len-1] == '/'
#elif __AROS__
|| dir[len-1] == ':'
#endif
)
{
len += strlen(filename) + 1;
path = GFX2_malloc(len);
if (path == NULL)
return NULL;
snprintf(path, len, "%s%s", dir, filename);
}
else
{
// need to add a path separator
len += strlen(PATH_SEPARATOR) + strlen(filename) + 1;
path = GFX2_malloc(len);
if (path == NULL)
return NULL;
snprintf(path, len, "%s%s%s", dir, PATH_SEPARATOR, filename);
}
return path;
}
// Récupère la partie "nom de file seul" d'un chemin
char * Extract_filename(char *dest, const char *source)
{
const char * position = Find_last_separator(source);
if (dest != NULL)
{
if (position)
strcpy(dest,position+1);
else
strcpy(dest,source);
return dest;
}
else
{
if (position)
return strdup(position + 1);
else
return strdup(source);
}
}
// Récupère la partie "répertoire+/" d'un chemin.
char * Extract_path(char *dest, const char *source)
{
char * position;
char * path;
path = Realpath(source, dest);
if (path == NULL)
{
GFX2_Log(GFX2_ERROR, "Realpath(\"%s\", %p) failed !\n", source, dest);
return NULL;
}
position = Find_last_separator(path);
if (position)
position[1] = '\0';
else
{
size_t len = strlen(path);
if (dest != NULL)
strcpy(path + len, PATH_SEPARATOR);
else
{
char * tmp = realloc(path, len + strlen(PATH_SEPARATOR) + 1);
if (tmp != NULL)
{
path = tmp;
strcpy(path + len, PATH_SEPARATOR);
}
else
{
GFX2_Log(GFX2_ERROR, "Extract_path(): Failed to realloc %lu bytes\n",
(unsigned long)(len + strlen(PATH_SEPARATOR) + 1));
}
}
}
return path;
}
///
/// Appends a file or directory name to an existing directory name.
/// As a special case, when the new item is equal to PARENT_DIR, this
/// will remove the rightmost directory name.
/// reverse_path is optional, if it's non-null, the function will
/// write there :
/// - if filename is ".." : The name of eliminated directory/file
/// - else: ".."
void Append_path(char *path, const char *filename, char *reverse_path)
{
// Parent
if (!strcmp(filename, PARENT_DIR))
{
// Going up one directory
long len;
char * separator_pos;
// Remove trailing slash
len=strlen(path);
if (len && (!strcmp(path+len-1,PATH_SEPARATOR)
#ifdef __WIN32__
|| path[len-1]=='/'
#endif
))
path[len-1]='\0';
separator_pos=Find_last_separator(path);
if (separator_pos)
{
if (reverse_path)
strcpy(reverse_path, separator_pos+1);
#if defined(__AROS__)
// Don't strip away the colon
if (*separator_pos == ':') *(separator_pos+1)='\0';
else *separator_pos='\0';
#else
*separator_pos='\0';
#endif
}
else
{
if (reverse_path)
strcpy(reverse_path, path);
path[0]='\0';
}
#if defined(__WIN32__)
// Roots of drives need a pending antislash
if (path[0]!='\0' && path[1]==':' && path[2]=='\0')
{
strcat(path, PATH_SEPARATOR);
}
#endif
}
else
// Sub-directory
{
long len;
// Add trailing slash if needed
len=strlen(path);
if (len && (strcmp(path+len-1,PATH_SEPARATOR)
#ifdef __WIN32__
&& path[len-1]!='/'
#elif __AROS__
&& path[len-1]!=':' // To avoid paths like volume:/dir
#endif
))
{
strcpy(path+len, PATH_SEPARATOR);
len+=strlen(PATH_SEPARATOR);
}
strcat(path, filename);
if (reverse_path)
strcpy(reverse_path, PARENT_DIR);
}
}
int Position_last_dot(const char * fname)
{
int pos_last_dot = -1;
int c = 0;
for (c = 0; fname[c] != '\0'; c++)
if (fname[c] == '.')
pos_last_dot = c;
return pos_last_dot;
}
int Position_last_dot_unicode(const word * fname)
{
int pos_last_dot = -1;
int c = 0;
for (c = 0; fname[c] != '\0'; c++)
if (fname[c] == '.')
pos_last_dot = c;
return pos_last_dot;
}
int File_exists(const char * fname)
// Détermine si un file passé en paramètre existe ou non dans le
// répertoire courant.
{
#if defined(WIN32)
return (INVALID_FILE_ATTRIBUTES == GetFileAttributesA(fname)) ? 0 : 1;
#else
struct stat buf;
int result;
result=stat(fname,&buf);
if (result!=0)
return(errno!=ENOENT);
else
return 1;
#endif
}
int Directory_exists(const char * directory)
// Détermine si un répertoire passé en paramètre existe ou non dans le
// répertoire courant.
{
#if defined(WIN32)
DWORD attr = GetFileAttributesA(directory);
if (attr == INVALID_FILE_ATTRIBUTES)
return 0;
return (attr & FILE_ATTRIBUTE_DIRECTORY) ? 1 : 0;
#else
DIR* entry; // Structure de lecture des éléments
if (strcmp(directory,PARENT_DIR)==0)
return 1;
else
{
// On va chercher si le répertoire existe à l'aide d'un Opendir. S'il
// renvoie NULL c'est que le répertoire n'est pas accessible...
entry=opendir(directory);
if (entry==NULL)
return 0;
else
{
closedir(entry);
return 1;
}
}
#endif
}
/// Check if a file or directory is hidden.
int File_is_hidden(const char *fname, const char *full_name)
{
#if defined(__amigaos4__) || defined(__AROS__) || defined(__MORPHOS__) || defined(__amigaos__) || defined(__MINT__)|| defined(__SWITCH__)
// False (unable to determine, or irrelevent for platform)
(void)fname;//unused
(void)full_name;//unused
return 0;
#elif defined(__WIN32__)
unsigned long att;
if (full_name!=NULL)
att = GetFileAttributesA(full_name);
else
att = GetFileAttributesA(fname);
if (att==INVALID_FILE_ATTRIBUTES)
return 0;
return (att&FILE_ATTRIBUTE_HIDDEN)?1:0;
#else
(void)full_name;//unused
// On linux/unix (default), files are considered hidden if their name
// begins with a .
// As a special case, we'll consider 'parent directory' (..) never hidden.
return fname[0]=='.' && strcmp(fname, PARENT_DIR);
#endif
}
// File size in bytes
unsigned long File_length(const char * fname)
{
#if defined(WIN32)
WIN32_FILE_ATTRIBUTE_DATA infos;
if (GetFileAttributesExA(fname, GetFileExInfoStandard, &infos))
{
return (unsigned long)(((DWORD64)infos.nFileSizeHigh << 32) + (DWORD64)infos.nFileSizeLow);
}
else
return 0;
#else
struct stat infos_fichier;
if (stat(fname,&infos_fichier))
return 0;
return infos_fichier.st_size;
#endif
}
unsigned long File_length_file(FILE * file)
{
#if defined(WIN32)
// revert to old school way of finding file size
long offset_backup;
long file_length;
offset_backup = ftell(file);
if (offset_backup < 0)
return 0;
if (fseek(file, 0, SEEK_END) < 0)
return 0;
file_length = ftell(file);
if (file_length < 0)
file_length = 0;
fseek(file, offset_backup, SEEK_SET);
return (unsigned long)file_length;
#else
struct stat infos_fichier;
if (fstat(fileno(file),&infos_fichier))
return 0;
return infos_fichier.st_size;
#endif
}
void For_each_file(const char * directory_name, void Callback(const char *, const char *))
{
#if defined(WIN32)
WIN32_FIND_DATAA fd;
char * full_filename;
char * search_string;
HANDLE h;
full_filename = Realpath(directory_name, NULL);
search_string = Filepath_append_to_dir((full_filename != NULL) ? full_filename : directory_name, "*");
free(full_filename);
h = FindFirstFileA(search_string, &fd);
free(search_string);
if (h != INVALID_HANDLE_VALUE)
{
do
{
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
continue;
full_filename = Filepath_append_to_dir(directory_name, fd.cFileName);
Callback(full_filename, fd.cFileName);
free(full_filename);
}
while (FindNextFileA(h, &fd));
FindClose(h);
}
#else
// directory traversal
DIR* current_directory;
struct dirent* entry; // directory entry
current_directory = opendir(directory_name);
if(current_directory == NULL)
return; // Invalid directory
while ((entry = readdir(current_directory)) != NULL)
{
char * full_filename;
struct stat st;
full_filename = Filepath_append_to_dir(directory_name, entry->d_name);
// d_name is the only field you can count on in all POSIX systems.
// Also we need to call stat() in order to follow symbolic links
if (stat(full_filename, &st) < 0)
GFX2_Log(GFX2_WARNING, "stat(\"%s\") failed\n", full_filename);
else
{
if (S_ISREG(st.st_mode))
Callback(full_filename, entry->d_name);
}
free(full_filename);
}
closedir(current_directory);
#endif
}
/// Scans a directory, calls Callback for each file or directory in it,
void For_each_directory_entry(const char * directory_name, void * pdata, T_File_dir_cb Callback)
{
#if defined(WIN32)
WIN32_FIND_DATAW fd;
size_t len;
word * search_string;
HANDLE h;
len = strlen(directory_name) + 3;
search_string = (word *)GFX2_malloc(sizeof(word) * len);
if (search_string == NULL)
return;
Unicode_char_strlcpy(search_string, directory_name, len);
Unicode_char_strlcat(search_string, "\\*", len);
h = FindFirstFileW((WCHAR *)search_string, &fd);
free(search_string);
if (h != INVALID_HANDLE_VALUE)
{
do
{
int i;
char short_filename[16];
if (fd.cAlternateFileName[0] != 0)
for (i = 0; fd.cAlternateFileName[i] != 0 && i < (int)sizeof(short_filename) - 1; i++)
short_filename[i] = (char)fd.cAlternateFileName[i];
else // normal name is short !
for (i = 0; fd.cFileName[i] != 0 && i < (int)sizeof(short_filename) - 1; i++)
short_filename[i] = (char)fd.cFileName[i];
short_filename[i] = '\0';
Callback(
pdata,
short_filename,
(const word *)fd.cFileName,
(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? 0 : 1,
(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? 1 : 0,
(fd.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) ? 1 : 0
);
}
while (FindNextFileW(h, &fd));
FindClose(h);
}
#else
DIR* current_directory; // current directory
struct dirent* entry; // directory entry struct
current_directory = opendir(directory_name);
if(current_directory == NULL)
return; // Invalid directory
while ((entry = readdir(current_directory)) != NULL)
{
word * unicode_filename = NULL;
char * full_filename;
struct stat st;
#ifdef ENABLE_FILENAMES_ICONV
if (cd_utf16 != (iconv_t)-1)
{
char * input = entry->d_name;
size_t inbytesleft = strlen(entry->d_name);
char * output;
size_t outbytesleft;
size_t r;
unicode_filename = GFX2_malloc(sizeof(word) * (inbytesleft + 1));
if (unicode_filename != NULL)
{
output = (char *)unicode_filename;
outbytesleft = sizeof(word) * inbytesleft;
r = iconv(cd_utf16, &input, &inbytesleft, &output, &outbytesleft);
if (r != (size_t)-1)
{
output[0] = '\0';
output[1] = '\0';
}
else
{
free(unicode_filename);
unicode_filename = NULL;
}
}
}
#endif
full_filename = Filepath_append_to_dir(directory_name, entry->d_name);
if (stat(full_filename, &st) < 0)
GFX2_Log(GFX2_WARNING, "stat(\"%s\") failed\n", full_filename);
else
{
Callback(
pdata,
entry->d_name,
unicode_filename,
S_ISREG(st.st_mode),
S_ISDIR(st.st_mode),
File_is_hidden(entry->d_name, full_filename));
}
free(full_filename);
free(unicode_filename);
}
closedir(current_directory);
#endif
}
/**
* Convert a file name to unicode characters
*
* If the parametter is null, the buffer is malloc'ed
*
* @param filename_unicode the output buffer of MAX_PATH_CHARACTERS wide characters
* @param filename the input file name
* @param directory the input file directory
* @return NULL if no conversion has taken place.
* @return filename_unicode if the unicode filename has been retrieved
*/
word * Get_Unicode_Filename(word * filename_unicode, const char * filename, const char * directory)
{
#if defined(WIN32)
int i = 0;
DWORD len;
WCHAR * shortPath;
WCHAR * longPath;
WCHAR * sep;
shortPath = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * (strlen(filename) + strlen(directory) + 2));
if (shortPath == NULL)
return NULL;
// copy the full path to a wide character buffer :
while (directory[0] != '\0')
shortPath[i++] = *directory++;
if (i > 0 && shortPath[i-1] != '\\') // add path separator only if it is missing
shortPath[i++] = '\\';
while (filename[0] != '\0')
shortPath[i++] = *filename++;
shortPath[i++] = 0;
len = GetLongPathNameW(shortPath, NULL, 0);
if (len == 0)
{
free(shortPath);
return NULL;
}
longPath = (WCHAR *)GFX2_malloc(len * sizeof(WCHAR));
if (longPath == NULL || GetLongPathNameW(shortPath, longPath, len) == 0)
{
free(shortPath);
return NULL;
}
free(shortPath);
sep = wcsrchr(longPath, '\\');
if (sep == NULL)
{
if (filename_unicode == NULL)
return (word *)longPath;
memcpy(filename_unicode, longPath, sizeof(word) * len);
}
else
{
sep++;
len = wcslen(sep) + 1;
if (filename_unicode == NULL)
filename_unicode = (word *)GFX2_malloc(sizeof(word) * len);
if (filename_unicode != NULL)
memcpy(filename_unicode, sep, sizeof(word) * len);
}
free(longPath);
return filename_unicode;
#elif defined(ENABLE_FILENAMES_ICONV)
int allocated_memory = 0;
char * input = (char *)filename;
size_t inbytesleft = strlen(filename);
char * output;
size_t outbytesleft;
size_t r;
(void)directory; // unused
if (cd_utf16 == (iconv_t)-1)
return NULL;
if (filename_unicode == NULL)
{
filename_unicode = GFX2_malloc(sizeof(word) * (inbytesleft + 1));
if (filename_unicode == NULL)
return NULL;
allocated_memory = 1;
outbytesleft = inbytesleft * 2;
}
else
outbytesleft = (MAX_PATH_CHARACTERS - 1) * 2;
output = (char *)filename_unicode;
r = iconv(cd_utf16, &input, &inbytesleft, &output, &outbytesleft);
if (r != (size_t)-1)
{
output[0] = '\0';
output[1] = '\0';
return filename_unicode;
}
if (allocated_memory)
free(filename_unicode);
return NULL;
#else
(void)filename_unicode;
(void)filename;
(void)directory;
// not implemented
return NULL;
#endif
}
/// Lock file used to prevent several instances of grafx2 from harming each others' backups
#ifdef WIN32
HANDLE Lock_file_handle = INVALID_HANDLE_VALUE;
#else
int Lock_file_handle = -1;
#endif
#define GFX2_LOCK_FILENAME "gfx2.lck"
byte Create_lock_file(const char *file_directory)
{
#if defined (__amigaos__)||(__AROS__)||(__ANDROID__)
#warning "Missing code for your platform, please check and correct!"
#elif defined(__SWITCH__)
// The switch can only run one application at a time, so we don't do anything special here
#else
char * lock_filename;
#ifdef GCWZERO
lock_filename = Filepath_append_to_dir("/media/home/.grafx2/", GFX2_LOCK_FILENAME);
#else
lock_filename = Filepath_append_to_dir(file_directory, GFX2_LOCK_FILENAME);
#endif
#ifdef WIN32
// Windowzy method for creating a lock file
Lock_file_handle = CreateFileA(
lock_filename,
GENERIC_WRITE,
0, // No sharing
NULL,
OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL);
free(lock_filename);
if (Lock_file_handle == INVALID_HANDLE_VALUE)
{
return -1;
}
#else
// Unixy method for lock file
Lock_file_handle = open(lock_filename,O_WRONLY|O_CREAT,S_IRUSR|S_IWUSR);
free(lock_filename);
if (Lock_file_handle == -1)
{
// Usually write-protected media
return -1;
}
if (lockf(Lock_file_handle, F_TLOCK, 0)==-1)
{
close(Lock_file_handle);
// Usually write-protected media
return -1;
}
#endif
#endif // __amigaos__ or __AROS__
return 0;
}
void Release_lock_file(const char *file_directory)
{
char * lock_filename;
#ifdef WIN32
if (Lock_file_handle != INVALID_HANDLE_VALUE)
{
CloseHandle(Lock_file_handle);
}
#else
if (Lock_file_handle != -1)
{
close(Lock_file_handle);
Lock_file_handle = -1;
}
#endif
// Actual deletion
#ifdef GCWZERO
lock_filename = Filepath_append_to_dir("/media/home/.grafx2/", GFX2_LOCK_FILENAME);
#else
lock_filename = Filepath_append_to_dir(file_directory, GFX2_LOCK_FILENAME);
#endif
Remove_path(lock_filename);
free(lock_filename);
}
char * Get_current_directory(char * buf, word * * unicode, size_t size)
{
#if defined(__MINT__)
if (buf == NULL)
{
buf = GFX2_malloc(MAX_PATH_CHARACTERS);
if (buf == NULL)
return NULL;
}
buf[0] = 'A'+Dgetdrv();
buf[1] = ':';
buf[2] = '\\';
Dgetpath(buf+3,0);
strcat(buf,PATH_SEPARATOR);
if (unicode != NULL)
*unicode = NULL; // no unicode support
return buf;
#elif defined(WIN32)
WCHAR * cur_dir, * short_dir;
size_t size_cur, size_short;
size_t i;
// first get the current directory in unicode
size_cur = (size_t)GetCurrentDirectoryW(0, NULL);
if (size_cur == 0)
{
GFX2_Log(GFX2_ERROR, "GetCurrentDirectoryW(0, NULL) failed !\n");
return NULL;
}
cur_dir = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * size_cur);
if (cur_dir == NULL)
return NULL;
if (GetCurrentDirectoryW(size_cur, cur_dir) == 0)
{
GFX2_Log(GFX2_ERROR, "GetCurrentDirectoryW(%u, %p) failed !\n", (unsigned)size_cur, cur_dir);
return NULL;
}
// convert to "short" path (ie C:\PROGRA~1\...)
size_short = (size_t)GetShortPathNameW(cur_dir, NULL, 0);
if (size_short == 0)
{
GFX2_Log(GFX2_ERROR, "GetShortPathNameW(%p, NULL, 0) failed !\n", cur_dir);
free(cur_dir);
return NULL;
}
short_dir = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * size_short);
if (short_dir == NULL)
{
free(cur_dir);
return NULL;
}
if (GetShortPathNameW(cur_dir, short_dir, size_short) == 0)
{
GFX2_Log(GFX2_ERROR, "GetShortPathNameW(%p, %p, %u) failed !\n", cur_dir, short_dir, (unsigned)size_short);
free(cur_dir);
free(short_dir);
return NULL;
}
// now copy / return the path
if (buf == NULL)
{
size = size_short;
buf = (char *)GFX2_malloc(size);
if (buf == NULL)
{
free(cur_dir);
free(short_dir);
return NULL;
}
}
for (i = 0; i < (size - 1) && short_dir[i]; i++)
buf[i] = (char)short_dir[i];
buf[i] = '\0';
free(short_dir);
if (unicode != NULL)
{
WCHAR * long_dir;
size_t size_long;
*unicode = NULL;
// convert to "long" path for display
size_long = (size_t)GetLongPathNameW(cur_dir, NULL, 0);
if (size_long == 0)
GFX2_Log(GFX2_ERROR, "GetLongPathNameW(%p, NULL, 0) failed !\n", cur_dir);
else
{
long_dir = (WCHAR *)GFX2_malloc(sizeof(WCHAR) * size_long);
if (long_dir != NULL)
{
if (GetLongPathNameW(cur_dir, long_dir, size_long) == 0)
{
GFX2_Log(GFX2_ERROR, "GetLongPathNameW(%p, %p, %u) failed !\n", cur_dir, long_dir, (unsigned)size_long);
free(long_dir);
}
else
*unicode = (word *)long_dir;
}
}
}
free(cur_dir);
return buf;
#else
char * ret = getcwd(buf, size);
if (ret == NULL)
GFX2_Log(GFX2_ERROR, "getcwd(%p, %lu) failed !\n", buf, (unsigned long)size);
#ifdef ENABLE_FILENAMES_ICONV
if (ret != NULL && unicode != NULL)
{
char * input = ret;
size_t inbytesleft = strlen(ret);
word * buf_unicode = GFX2_malloc((inbytesleft + 1) * 2);
char * output = (char *)buf_unicode;
size_t outbytesleft = 2 * inbytesleft;
if (cd_utf16 != (iconv_t)-1 && buf_unicode != NULL)
{
size_t r = iconv(cd_utf16, &input, &inbytesleft, &output, &outbytesleft);
if (r != (size_t)-1)
{
output[0] = '\0';
output[1] = '\0';
*unicode = buf_unicode;
}
else
free(buf_unicode);
}
}
#else
if (unicode != NULL)
*unicode = NULL; // no unicode support
#endif
return ret;
#endif
}
int Change_directory(const char * path)
{
GFX2_Log(GFX2_DEBUG, "Change_directory(\"%s\")\n", path);
#if defined(__WIN32__) || defined(WIN32)
return (SetCurrentDirectoryA(path) ? 0 : -1);
#else
return chdir(path);
#endif
}
int Remove_path(const char * path)
{
#if defined(WIN32)
return (DeleteFileA(path) ? 0 : -1);
#elif defined(__linux__)
return unlink(path);
#else
return remove(path);
#endif
}
///
/// Remove the directory
int Remove_directory(const char * path)
{
#if defined(WIN32)
return RemoveDirectoryA(path) ? 0 : -1;
#else
return rmdir(path);
#endif
}
///
/// Calculate relative path
char * Calculate_relative_path(const char * ref_path, const char * path)
{
char * real_ref_path;
char * rel_path = NULL;
int last_separator = -1;
int i;
int separator_count = 0;
size_t len;
if (ref_path == NULL || path == NULL)
return NULL;
real_ref_path = Realpath(ref_path, NULL);
if (real_ref_path == NULL)
real_ref_path = strdup(ref_path);
#if defined(WIN32) || defined(__MINT__)
if (real_ref_path[1] == ':' && path[1] == ':')
{
// use same case for drive letter
real_ref_path[0] = (real_ref_path[0] & ~32) | (path[0] & 32);
if (real_ref_path[0] != path[0])
{
free(real_ref_path);
return NULL; // path on different volumes, not possible
}
}
#endif
// look for common path parts
for (i = 0; real_ref_path[i] == path[i] && path[i] != '\0'; i++)
{
if (path[i] == PATH_SEPARATOR[0])
last_separator = i;
#if defined(WIN32)
else if(path[i] == '/')
last_separator = i;
#endif
}
// at this point, all chars from index 0 to i-1 are identical in
// real_ref_path and path.
// real_ref_path[i] and path[i] are either different, or both '\0'
if (real_ref_path[i] == PATH_SEPARATOR[0] && real_ref_path[i + 1] == '\0' && path[i] == '\0')
{
free(real_ref_path);
return strdup("."); // path are identical (real_ref_path has additional trailing separator)
}
if (real_ref_path[i] == '\0')
{
if (path[i] == '\0')
{
free(real_ref_path);
return strdup("."); // path are identical
}
// path is under ref_path
if (path[i] == PATH_SEPARATOR[0])
{
free(real_ref_path);
len = strlen(path + i) + 1;
rel_path = GFX2_malloc(len + 1);
if (rel_path != NULL)
snprintf(rel_path, len + 1, ".%s", path + i);
return rel_path;
}
else if (i > 0 && real_ref_path[i - 1] == PATH_SEPARATOR[0])
{
free(real_ref_path);
len = strlen(path + i - 1) + 1;
rel_path = GFX2_malloc(len + 1);
if (rel_path != NULL)
snprintf(rel_path, len + 1, ".%s", path + i - 1);
return rel_path;
}
}
if (last_separator <= 0)
{
free(real_ref_path);
return strdup(path); // no common part found return absolute path
}
// count the number of path separators in the reference path
for (i = last_separator; real_ref_path[i] != '\0'; i++)
{
if (real_ref_path[i] == PATH_SEPARATOR[0] && real_ref_path[i + 1] != '\0') // do not count the trailing separator
separator_count++;
}
free(real_ref_path);
i = 0;
// construct the relative path
len = separator_count * (2 + strlen(PATH_SEPARATOR)) + strlen(path + last_separator + 1) + 1;
rel_path = GFX2_malloc(len + 1);
if (rel_path != NULL)
{
while(separator_count-- > 0)
i += snprintf(rel_path + i, len + 1 - i, "..%s", PATH_SEPARATOR);
strncpy(rel_path + i, path + last_separator + 1, len + 1 - i);
rel_path[len] = '\0';
}
return rel_path;
}
#if defined(WIN32)
static void Enumerate_Network_R(T_Fileselector *list, LPNETRESOURCEA lpnr)
{
// Mpr.lib
HANDLE hEnum;
DWORD r;
r = WNetOpenEnumA (RESOURCE_GLOBALNET, RESOURCETYPE_DISK, 0, lpnr, &hEnum);
if (r == NO_ERROR)
{
DWORD buffer_size = 16*1024;
DWORD count = -1;
LPNETRESOURCEA lpnrLocal = (LPNETRESOURCEA) GlobalAlloc(GPTR, buffer_size);
do
{
ZeroMemory(lpnrLocal, buffer_size);
r = WNetEnumResourceA(hEnum, &count, lpnrLocal, &buffer_size);
if (r == NO_ERROR)
{
DWORD i;
for (i = 0 ; i < count; i++)
{
GFX2_Log(GFX2_DEBUG, "%08x %08x %08x %s %s %s %s\n",
lpnrLocal[i].dwType, lpnrLocal[i].dwDisplayType,
lpnrLocal[i].dwUsage,
lpnrLocal[i].lpProvider, lpnrLocal[i].lpLocalName,
lpnrLocal[i].lpRemoteName, lpnrLocal[i].lpComment);
if (lpnrLocal[i].dwUsage & RESOURCEUSAGE_CONTAINER)
{
Enumerate_Network_R(list, &lpnrLocal[i]);
}
if (lpnrLocal[i].dwType == RESOURCETYPE_DISK &&
lpnrLocal[i].dwDisplayType == RESOURCEDISPLAYTYPE_SHARE)
{
Add_element_to_list(list, lpnrLocal[i].lpRemoteName,
Format_filename(lpnrLocal[i].lpRemoteName, 19-1, FSOBJECT_DRIVE),
FSOBJECT_DRIVE, ICON_NETWORK);
list->Nb_directories++;
}
}
}
else
{
}
}
while (0);
GlobalFree((HGLOBAL) lpnrLocal);
WNetCloseEnum(hEnum);
}
}
void Enumerate_Network(T_Fileselector *list)
{
Enumerate_Network_R(list, NULL);
}
#endif
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