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i64 file_mtime(const char *zFilename){
struct stat buf;
if( stat(zFilename, &buf)!=0 ){
return -1;
}
return buf.st_mtime;
}
/*
** Copy the content of a file from one place to another.
*/
void file_copy(const char *zFrom, const char *zTo){
FILE *in, *out;
int got;
char zBuf[8192];
in = fopen(zFrom, "rb");
if( in==0 ) fossil_fatal("cannot open \"%s\" for reading", zFrom);
out = fopen(zTo, "wb");
if( out==0 ) fossil_fatal("cannot open \"%s\" for writing", zTo);
while( (got=fread(zBuf, 1, sizeof(zBuf), in))>0 ){
fwrite(zBuf, 1, got, out);
}
fclose(in);
fclose(out);
}
/*
** Return TRUE if the named file is an ordinary file. Return false
** for directories, devices, fifos, symlinks, etc.
*/
int file_isfile(const char *zFilename){
struct stat buf;
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