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chsize(fileno(p->fp),JSVAL_TO_INT(*vp));
break;
case FILE_PROP_ATTRIBUTES:
CHMOD(p->name,JSVAL_TO_INT(*vp));
break;
case FILE_PROP_ETX:
p->etx = (uchar)JSVAL_TO_INT(*vp);
break;
}
return(JS_TRUE);
}
static JSBool js_file_get(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
BYTE* buf;
long l;
long len;
long offset;
ulong sum;
BYTE digest[MD5_DIGEST_SIZE];
JSString* js_str=NULL;
if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL) {
JS_ReportError(cx,getprivate_failure,WHERE);
tiny = JSVAL_TO_INT(id);
#if 0 /* just too much */
dbprintf(FALSE, sock, "getting property %d",tiny);
#endif
switch(tiny) {
case FILE_PROP_NAME:
if((js_str=JS_NewStringCopyZ(cx, p->name))==NULL)
return(JS_FALSE);
*vp = STRING_TO_JSVAL(js_str);
break;
case FILE_PROP_MODE:
if((js_str=JS_NewStringCopyZ(cx, p->mode))==NULL)
return(JS_FALSE);
*vp = STRING_TO_JSVAL(js_str);
break;
case FILE_PROP_EXISTS:
if(p->fp) /* open? */
*vp = JSVAL_TRUE;
else
*vp = BOOLEAN_TO_JSVAL(fexist(p->name));
break;
case FILE_PROP_DATE:
JS_NewNumberValue(cx,fdate(p->name),vp);
break;
case FILE_PROP_IS_OPEN:
*vp = BOOLEAN_TO_JSVAL(p->fp!=NULL);
break;
case FILE_PROP_EOF:
if(p->fp)
*vp = BOOLEAN_TO_JSVAL(feof(p->fp)!=0);
else
*vp = JSVAL_TRUE;
break;
case FILE_PROP_ERROR:
if(p->fp)
*vp = INT_TO_JSVAL(ferror(p->fp));
else
*vp = INT_TO_JSVAL(errno);
break;
case FILE_PROP_POSITION:
if(p->fp)
JS_NewNumberValue(cx,ftell(p->fp),vp);
else
*vp = INT_TO_JSVAL(-1);
break;
case FILE_PROP_LENGTH:
if(p->fp) /* open? */
JS_NewNumberValue(cx,filelength(fileno(p->fp)),vp);
JS_NewNumberValue(cx,flength(p->name),vp);
break;
case FILE_PROP_ATTRIBUTES:
JS_NewNumberValue(cx,getfattr(p->name),vp);
break;
case FILE_PROP_DEBUG:
*vp = BOOLEAN_TO_JSVAL(p->debug);
break;
case FILE_PROP_UUENCODED:
*vp = BOOLEAN_TO_JSVAL(p->uuencoded);
case FILE_PROP_B64ENCODED:
*vp = BOOLEAN_TO_JSVAL(p->b64encoded);
break;
case FILE_PROP_ROT13:
*vp = BOOLEAN_TO_JSVAL(p->rot13);
break;
case FILE_PROP_NETWORK_ORDER:
*vp = BOOLEAN_TO_JSVAL(p->network_byte_order);
break;
case FILE_PROP_DESCRIPTOR:
if(p->fp)
*vp = INT_TO_JSVAL(fileno(p->fp));
else
*vp = INT_TO_JSVAL(-1);
case FILE_PROP_ETX:
*vp = INT_TO_JSVAL(p->etx);
break;
case FILE_PROP_CHKSUM:
case FILE_PROP_CRC16:
case FILE_PROP_CRC32:
*vp = JSVAL_ZERO;
if(p->fp==NULL)
break;
/* fall-through */
case FILE_PROP_MD5_HEX:
case FILE_PROP_MD5_B64:
*vp = JSVAL_VOID;
if(p->fp==NULL)
break;
offset=ftell(p->fp); /* save current file position */
fseek(p->fp,0,SEEK_SET);
len=filelength(fileno(p->fp));
if(len<1)
break;
if((buf=malloc(len*2))==NULL)
break;
len=fread(buf,sizeof(BYTE),len,p->fp);
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if(len>0)
switch(tiny) {
case FILE_PROP_CHKSUM:
for(sum=l=0;l<len;l++)
sum+=buf[l];
JS_NewNumberValue(cx,sum,vp);
break;
case FILE_PROP_CRC16:
JS_NewNumberValue(cx,crc16(buf,len),vp);
break;
case FILE_PROP_CRC32:
JS_NewNumberValue(cx,crc32(buf,len),vp);
break;
case FILE_PROP_MD5_HEX:
MD5_calc(digest,buf,len);
MD5_hex(buf,digest);
js_str=JS_NewStringCopyZ(cx, buf);
break;
case FILE_PROP_MD5_B64:
MD5_calc(digest,buf,len);
b64_encode(buf,len*2,digest,sizeof(digest));
js_str=JS_NewStringCopyZ(cx, buf);
break;
}
free(buf);
fseek(p->fp,offset,SEEK_SET); /* restore saved file position */
if(js_str!=NULL)
*vp = STRING_TO_JSVAL(js_str);
break;
}
#define FILE_PROP_FLAGS JSPROP_ENUMERATE|JSPROP_READONLY
static struct JSPropertySpec js_file_properties[] = {
/* name ,tinyid ,flags, getter, setter */
{ "name" ,FILE_PROP_NAME ,FILE_PROP_FLAGS, NULL,NULL},
{ "mode" ,FILE_PROP_MODE ,FILE_PROP_FLAGS, NULL,NULL},
{ "exists" ,FILE_PROP_EXISTS ,FILE_PROP_FLAGS, NULL,NULL},
{ "date" ,FILE_PROP_DATE ,FILE_PROP_FLAGS, NULL,NULL},
{ "is_open" ,FILE_PROP_IS_OPEN ,FILE_PROP_FLAGS, NULL,NULL},
{ "eof" ,FILE_PROP_EOF ,FILE_PROP_FLAGS, NULL,NULL},
{ "error" ,FILE_PROP_ERROR ,FILE_PROP_FLAGS, NULL,NULL},
{ "descriptor" ,FILE_PROP_DESCRIPTOR ,FILE_PROP_FLAGS, NULL,NULL},
/* writeable */
{ "etx" ,FILE_PROP_ETX ,JSPROP_ENUMERATE, NULL,NULL},
{ "debug" ,FILE_PROP_DEBUG ,JSPROP_ENUMERATE, NULL,NULL},
{ "position" ,FILE_PROP_POSITION ,JSPROP_ENUMERATE, NULL,NULL},
{ "length" ,FILE_PROP_LENGTH ,JSPROP_ENUMERATE, NULL,NULL},
{ "attributes" ,FILE_PROP_ATTRIBUTES ,JSPROP_ENUMERATE, NULL,NULL},
{ "network_byte_order",FILE_PROP_NETWORK_ORDER,JSPROP_ENUMERATE, NULL,NULL},
{ "rot13" ,FILE_PROP_ROT13 ,JSPROP_ENUMERATE, NULL,NULL},
{ "uue" ,FILE_PROP_UUENCODED ,JSPROP_ENUMERATE, NULL,NULL},
{ "base64" ,FILE_PROP_B64ENCODED ,JSPROP_ENUMERATE, NULL,NULL},
/* dynamically calculated */
{ "crc16" ,FILE_PROP_CRC16 ,FILE_PROP_FLAGS, NULL,NULL},
{ "crc32" ,FILE_PROP_CRC32 ,FILE_PROP_FLAGS, NULL,NULL},
{ "chksum" ,FILE_PROP_CHKSUM ,FILE_PROP_FLAGS, NULL,NULL},
{ "md5_hex" ,FILE_PROP_MD5_HEX ,FILE_PROP_FLAGS, NULL,NULL},
{ "md5_base64" ,FILE_PROP_MD5_B64 ,FILE_PROP_FLAGS, NULL,NULL},
#ifdef _DEBUG
static char* file_prop_desc[] = {
"filename specified in constructor - <small>READ ONLY</small>"
,"mode string specified in <i>open</i> call - <small>READ ONLY</small>"
,"<i>true</i> if the file exists - <small>READ ONLY</small>"
,"last modified date/time (time_t format) - <small>READ ONLY</small>"
,"<i>true</i> if the file has been opened successfully - <small>READ ONLY</small>"
,"<i>true</i> if the current file position is at the <i>end of file</i> - <small>READ ONLY</small>"
,"the last occurred error value (use clear_error to clear) - <small>READ ONLY</small>"
,"the open file descriptor (advanced use only) - <small>READ ONLY</small>"
,"end-of-text character (advanced use only), if non-zero used by <i>read</i>, <i>readln</i>, and <i>write</i>"
,"the current file position (offset in bytes), change value to seek within file"
,"the current length of the file (in bytes)"
,"file mode/attributes"
,"set to <i>true</i> if binary data is to be written and read in Network Byte Order (big end first)"
,"set to <i>true</i> to enable automatic ROT13 translatation of text"
,"set to <i>true</i> to enable automatic unix-to-unix encode and decode on <tt>read</tt> and <tt>write</tt> calls"
,"set to <i>true</i> to enable automatic base64 encode and decode on <tt>read</tt> and <tt>write</tt> calls"
,"calculated 16-bit CRC of file contents - <small>READ ONLY</small>"
,"calculated 32-bit CRC of file contents - <small>READ ONLY</small>"
,"calculated 32-bit checksum of file contents - <small>READ ONLY</small>"
,"calculated 128-bit MD5 digest of file contents as hexadecimal string - <small>READ ONLY</small>"
,"calculated 128-bit MD5 digest of file contents as base64-encoded string - <small>READ ONLY</small>"
static jsMethodSpec js_file_functions[] = {
{"open", js_open, 1, JSTYPE_BOOLEAN, JSDOCSTR("[string mode, boolean shareable, number buflen]")
,JSDOCSTR("open file, <i>shareable</i> defaults to <i>false</i>, <i>buflen</i> defaults to 2048 bytes, "
"mode (default: <tt>w+</tt>) specifies the type of access requested for the file, as follows:<br>"
"<tt>r </tt> open for reading; if the file does not exist or cannot be found, the open call fails<br>"
"<tt>w </tt> open an empty file for writing; if the given file exists, its contents are destroyed<br>"
"<tt>a </tt> open for writing at the end of the file (appending); creates the file first if it doesnt exist<br>"
"<tt>r+</tt> open for both reading and writing (the file must exist)<br>"
"<tt>w+</tt> open an empty file for both reading and writing; if the given file exists, its contents are destroyed<br>"
"<tt>a+</tt> open for reading and appending<br>"
"<tt>b </tt> open in binary (untranslated) mode; translations involving carriage-return and linefeed characters are suppressed (e.g. <tt>r+b</tt>)<br>"
},
{"close", js_close, 0, JSTYPE_VOID, ""
,JSDOCSTR("close file")
{"remove", js_delete, 0, JSTYPE_BOOLEAN, ""
,JSDOCSTR("remove the file from the disk")
{"clearError", js_clear_error, 0, JSTYPE_ALIAS },
{"clear_error", js_clear_error, 0, JSTYPE_BOOLEAN, ""
,JSDOCSTR("clears the current error value (AKA clearError)")
},
{"flush", js_flush, 0, JSTYPE_BOOLEAN, ""
{"lock", js_lock, 2, JSTYPE_BOOLEAN, JSDOCSTR("[offset, length]")
,JSDOCSTR("lock file record for exclusive access (file must be opened <i>shareable</i>)")
{"unlock", js_unlock, 2, JSTYPE_BOOLEAN, JSDOCSTR("[offset, length]")
,JSDOCSTR("unlock file record for exclusive access")
{"read", js_read, 0, JSTYPE_STRING, JSDOCSTR("[maxlen]")
,JSDOCSTR("read a string from file (optionally unix-to-unix or base64 decoding in the process), "
"<i>maxlen</i> defaults to the current length of the file minus the current file position")
{"readln", js_readln, 0, JSTYPE_STRING, JSDOCSTR("[maxlen]")
,JSDOCSTR("read a line-feed terminated string, <i>maxlen</i> defaults to 512 characters")
{"readBin", js_readbin, 0, JSTYPE_NUMBER, JSDOCSTR("[bytes]")
,JSDOCSTR("read a binary integer from the file, default number of <i>bytes</i> is 4 (32-bits)")
},
{"readAll", js_readall, 0, JSTYPE_ARRAY, ""
,JSDOCSTR("read all lines into an array of strings")
{"write", js_write, 1, JSTYPE_BOOLEAN, JSDOCSTR("string text [,len]")
,JSDOCSTR("write a string to the file (optionally unix-to-unix or base64 decoding in the process)")
{"writeln", js_writeln, 0, JSTYPE_BOOLEAN, JSDOCSTR("[string text]")
,JSDOCSTR("write a line-feed terminated string to the file")
{"writeBin", js_writebin, 1, JSTYPE_BOOLEAN, JSDOCSTR("value [,bytes]")
,JSDOCSTR("write a binary integer to the file, default number of <i>bytes</i> is 4 (32-bits)")
{"writeAll", js_writeall, 0, JSTYPE_BOOLEAN, JSDOCSTR("array lines")
,JSDOCSTR("write an array of strings to file")
{"printf", js_fprintf, 0, JSTYPE_NUMBER, JSDOCSTR("string format [,args]")
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,JSDOCSTR("write a formatted string to the file (ala fprintf) - "
"<small>CAUTION: for experienced C programmers ONLY</small>")
},
{"iniGetSections", js_iniGetSections, 0, JSTYPE_ARRAY, ""
,JSDOCSTR("parse all section names from a <tt>.ini</tt> file (format = '<tt>[section]</tt>') "
"and return the section names as an <i>array of strings</i>")
},
{"iniGetKeys", js_iniGetKeys, 0, JSTYPE_ARRAY, JSDOCSTR("section")
,JSDOCSTR("parse all key names from the specified <i>section</i> in a <tt>.ini</tt> file "
"and return the key names as an <i>array of strings</i>")
},
{"iniGetValue", js_iniGetValue, 3, JSTYPE_STRING, JSDOCSTR("section, key, default")
,JSDOCSTR("parse a key from a <tt>.ini</tt> file and return its value (format = '<tt>key = value</tt>'). "
"returns the specified <i>default</i> value if the key or value is missing or invalid. "
"will return a <i>bool</i>, <i>number</i>, <i>string</i>, or an <i>array of strings</i> "
"determined by the type of <i>default</i> value specified")
},
{"iniGetObject", js_iniGetObject, 1, JSTYPE_OBJECT, JSDOCSTR("section")
,JSDOCSTR("parse an entire section from a .ini file "
"and return all of its keys and values as properties of an object")
},
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/* File Destructor */
static void js_finalize_file(JSContext *cx, JSObject *obj)
{
private_t* p;
if((p=(private_t*)JS_GetPrivate(cx,obj))==NULL)
return;
if(p->external==JS_FALSE && p->fp!=NULL)
fclose(p->fp);
dbprintf(FALSE, p, "closed: %s",p->name);
free(p);
JS_SetPrivate(cx, obj, NULL);
}
static JSClass js_file_class = {
"File" /* name */
,JSCLASS_HAS_PRIVATE /* flags */
,JS_PropertyStub /* addProperty */
,JS_PropertyStub /* delProperty */
,js_file_get /* getProperty */
,js_file_set /* setProperty */
,JS_EnumerateStub /* enumerate */
,JS_ResolveStub /* resolve */
,JS_ConvertStub /* convert */
,js_finalize_file /* finalize */
};
/* File Constructor (creates file descriptor) */
static JSBool
js_file_constructor(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
JSString* str;
private_t* p;
if((str = JS_ValueToString(cx, argv[0]))==NULL) {
JS_ReportError(cx,"No filename specified");
return(JS_FALSE);
}
*rval = JSVAL_VOID;
if((p=(private_t*)calloc(1,sizeof(private_t)))==NULL) {
JS_ReportError(cx,"calloc failed");
return(JS_FALSE);
}
SAFECOPY(p->name,JS_GetStringBytes(str));
if(!JS_SetPrivate(cx, obj, p)) {
dbprintf(TRUE, p, "JS_SetPrivate failed");
return(JS_FALSE);
}
if(!js_DefineMethods(cx, obj, js_file_functions, FALSE)) {
dbprintf(TRUE, p, "js_DefineMethods failed");
return(JS_FALSE);
}
#ifdef _DEBUG
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js_DescribeObject(cx,obj,"Class used for opening, creating, reading, or writing files on the local file system<p>"
"Special features include:</h2><ol type=disc>"
"<li>Exclusive-access files (default) or shared files<ol type=circle>"
"<li>optional record-locking"
"<li>buffered or non-buffered I/O"
"</ol>"
"<li>Support for binary files<ol type=circle>"
"<li>native or network byte order (endian)"
"<li>automatic Unix-to-Unix (<i>uue</i>) or Base64 encoding/decoding"
"</ol>"
"<li>Support for ASCII text files<ol type=circle>"
"<li>supports line-based I/O<ol type=square>"
"<li>entire file may be read or written as an array of strings"
"<li>individual lines may be read or written one line at a time"
"</ol>"
"<li>supports fixed-length records<ol type=square>"
"<li>optional end-of-text (<i>etx</i>) character for automatic record padding/termination"
"<li>Synchronet <tt>.dat</tt> files use an <i>etx</i> value of 3 (Ctrl-C)"
"</ol>"
"<li>supports <tt>.ini</tt> formated configuration files"
"<li>optional ROT13 encoding/translation"
"</ol>"
"<li>Dynamically-calculated industry standard checksums (e.g. CRC-16, CRC-32, MD5)"
"</ol>"
);
js_DescribeConstructor(cx,obj,"To create a new File object: <tt>var f = new File(filename)</tt>");
js_CreateArrayOfStrings(cx, obj, "_property_desc_list", file_prop_desc, JSPROP_READONLY);
#endif
dbprintf(FALSE, p, "object constructed");
return(JS_TRUE);
}
JSObject* DLLCALL js_CreateFileClass(JSContext* cx, JSObject* parent)
{
JSObject* sockobj;
sockobj = JS_InitClass(cx, parent, NULL
,&js_file_class
,js_file_constructor
,1 /* number of constructor args */
,NULL /* funcs, set in constructor */
,NULL,NULL);
return(sockobj);
}
JSObject* DLLCALL js_CreateFileObject(JSContext* cx, JSObject* parent, char *name, FILE* fp)
{
JSObject* obj;
private_t* p;
obj = JS_DefineObject(cx, parent, name, &js_file_class, NULL
,JSPROP_ENUMERATE|JSPROP_READONLY);
if(obj==NULL)
return(NULL);
if(!JS_DefineProperties(cx, obj, js_file_properties))
return(NULL);
if (!js_DefineMethods(cx, obj, js_file_functions, FALSE))
return(NULL);
if((p=(private_t*)calloc(1,sizeof(private_t)))==NULL)
return(NULL);
p->fp=fp;
p->debug=JS_FALSE;
p->external=JS_TRUE;
if(!JS_SetPrivate(cx, obj, p)) {
dbprintf(TRUE, p, "JS_SetPrivate failed");
return(NULL);
}
dbprintf(FALSE, p, "object created");
return(obj);
}