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platform_win32.c
276 lines (223 loc) · 6.81 KB
/
platform_win32.c
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/**
* MojoPatch; a tool for updating data in the field.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#include <windows.h>
#include <io.h>
#include <direct.h>
#include "platform.h"
int file_exists(const char *fname)
{
return(GetFileAttributes(fname) != 0xffffffff);
} /* file_exists */
int file_is_directory(const char *fname)
{
return((GetFileAttributes(fname) & FILE_ATTRIBUTE_DIRECTORY) != 0);
} /* file_is_directory */
int file_is_symlink(const char *fname)
{
return(0);
} /* file_is_symlink */
static const char *win32strerror(void)
{
static TCHAR msgbuf[255];
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), /* Default language */
msgbuf,
sizeof (msgbuf) / sizeof (TCHAR),
NULL
);
return((const char *) msgbuf);
} /* win32strerror */
/* enumerate contents of (base) directory. */
file_list *make_filelist(const char *base)
{
file_list *retval = NULL;
file_list *l = NULL;
file_list *prev = NULL;
HANDLE dir;
WIN32_FIND_DATA ent;
char wildcard[MAX_PATH];
snprintf(wildcard, sizeof (wildcard), "%s\\*", base);
dir = FindFirstFile(wildcard, &ent);
if (dir == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "Error: Can't list files in %s: %s.\n", base, win32strerror());
return(NULL);
} /* if */
while (FindNextFile(dir, &ent) != 0)
{
if (strcmp(ent.cFileName, ".") == 0)
continue;
if (strcmp(ent.cFileName, "..") == 0)
continue;
l = (file_list *) malloc(sizeof (file_list));
if (l == NULL)
{
fprintf(stderr, "Error: out of memory.\n");
break;
} /* if */
l->fname = (char *) malloc(strlen(ent.cFileName) + 1);
if (l->fname == NULL)
{
fprintf(stderr, "Error: out of memory.\n");
free(l);
break;
} /* if */
strcpy(l->fname, ent.cFileName);
if (retval == NULL)
retval = l;
else
prev->next = l;
prev = l;
l->next = NULL;
} /* while */
FindClose(dir);
return(retval);
} /* make_filelist */
int get_file_size(const char *fname, unsigned int *fsize)
{
DWORD FileSz;
DWORD FileSzHigh;
HANDLE hFil;
assert(fsize != NULL);
hFil = CreateFile(fname, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
if (hFil == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "Error: Couldn't get size of [%s]: %s.\n", fname, win32strerror());
return(0);
} /* if */
FileSz = GetFileSize(hFil, &FileSzHigh);
assert(FileSzHigh == 0);
CloseHandle(hFil);
*fsize = FileSz;
return(1);
} /* get_file_size */
char *get_current_dir(char *buf, size_t bufsize);
{
DWORD buflen = GetCurrentDirectory(bufsize, buf);
if (buflen <= bufsize)
{
*buf = '\0';
return(NULL);
} /* if */
if (buf[buflen - 2] != '\\')
strcat(buf, "\\");
return(buf);
} /* get_current_dir */
char *get_realpath(const char *path)
{
char *retval = NULL;
char *p = NULL;
retval = (char *) malloc(MAX_PATH);
if (retval == NULL)
{
fprintf(stderr, "Error: out of memory.\n");
return(NULL);
} /* if */
/*
* If in \\server\path format, it's already an absolute path.
* We'll need to check for "." and ".." dirs, though, just in case.
*/
if ((path[0] == '\\') && (path[1] == '\\'))
strcpy(retval, path);
else
{
char *currentDir = get_current_dir();
if (currentDir == NULL)
{
free(retval);
fprintf(stderr, "Error: out of memory.\n");
return(NULL);
} /* if */
if (path[1] == ':') /* drive letter specified? */
{
/*
* Apparently, "D:mypath" is the same as "D:\\mypath" if
* D: is not the current drive. However, if D: is the
* current drive, then "D:mypath" is a relative path. Ugh.
*/
if (path[2] == '\\') /* maybe an absolute path? */
strcpy(retval, path);
else /* definitely an absolute path. */
{
if (path[0] == currentDir[0]) /* current drive; relative. */
{
strcpy(retval, currentDir);
strcat(retval, path + 2);
} /* if */
else /* not current drive; absolute. */
{
retval[0] = path[0];
retval[1] = ':';
retval[2] = '\\';
strcpy(retval + 3, path + 2);
} /* else */
} /* else */
} /* if */
else /* no drive letter specified. */
{
if (path[0] == '\\') /* absolute path. */
{
retval[0] = currentDir[0];
retval[1] = ':';
strcpy(retval + 2, path);
} /* if */
else
{
strcpy(retval, currentDir);
strcat(retval, path);
} /* else */
} /* else */
free(currentDir);
} /* else */
/* (whew.) Ok, now take out "." and ".." path entries... */
p = retval;
while ( (p = strstr(p, "\\.")) != NULL)
{
/* it's a "." entry that doesn't end the string. */
if (p[2] == '\\')
memmove(p + 1, p + 3, strlen(p + 3) + 1);
/* it's a "." entry that ends the string. */
else if (p[2] == '\0')
p[0] = '\0';
/* it's a ".." entry. */
else if (p[2] == '.')
{
char *prevEntry = p - 1;
while ((prevEntry != retval) && (*prevEntry != '\\'))
prevEntry--;
if (prevEntry == retval) /* make it look like a "." entry. */
memmove(p + 1, p + 2, strlen(p + 2) + 1);
else
{
if (p[3] != '\0') /* doesn't end string. */
*prevEntry = '\0';
else /* ends string. */
memmove(prevEntry + 1, p + 4, strlen(p + 4) + 1);
p = prevEntry;
} /* else */
} /* else if */
else
{
p++; /* look past current char. */
} /* else */
} /* while */
/* shrink the retval's memory block if possible... */
p = (char *) realloc(retval, strlen(retval) + 1);
if (p != NULL)
retval = p;
return(retval);
} /* get_realpath */
int main(int argc, char **argv) /* !!! FIXME: WinMain, in the future? */
{
return(mojopatch_main(argc, argv));
} /* main */
/* end of platform_win32.c ... */