How to replace single quotation marks with "\"? - javascript

I'm building and inventory system and I'm trying to insert some data into MySql and noticed that I get errors when trying to insert things such as 1" Monitor Cable, or anything with quotation marks for that matter. Things such as part description and the part name could all potentially contain quotation marks or apostrophes.
I know that I can just put a "\" before the quotation marks or apostrophe's by using javascript's replace method, but I'm not sure what that would look like. If anyone could help me out, that would be great!

I assume that you process some sql in node.js and its parts are not directly copied from user input (this will be danger/unsafe) but first you filter input to prevent sql injection - if yes then try
let str = '1" Monitor Cable'
console.log( str.replace(/"/g,'\\"') );

Related

How to pass a JSON in Query Function and escape single Quotes [duplicate]

I am trying to insert some text data into a table in SQL Server 9.
The text includes a single quote '.
How do I escape that?
I tried using two single quotes, but it threw me some errors.
eg. insert into my_table values('hi, my name''s tim.');
Single quotes are escaped by doubling them up, just as you've shown us in your example. The following SQL illustrates this functionality. I tested it on SQL Server 2008:
DECLARE #my_table TABLE (
[value] VARCHAR(200)
)
INSERT INTO #my_table VALUES ('hi, my name''s tim.')
SELECT * FROM #my_table
Results
value
==================
hi, my name's tim.
If escaping your single quote with another single quote isn't working for you (like it didn't for one of my recent REPLACE() queries), you can use SET QUOTED_IDENTIFIER OFF before your query, then SET QUOTED_IDENTIFIER ON after your query.
For example
SET QUOTED_IDENTIFIER OFF;
UPDATE TABLE SET NAME = REPLACE(NAME, "'S", "S");
SET QUOTED_IDENTIFIER ON;
-- set OFF then ON again
How about:
insert into my_table values('hi, my name' + char(39) + 's tim.')
Many of us know that the Popular Method of Escaping Single Quotes is by Doubling them up easily like below.
PRINT 'It''s me, Arul.';
we are going to look on some other alternate ways of escaping the single quotes.
1. UNICODE Characters
39 is the UNICODE character of Single Quote. So we can use it like below.
PRINT 'Hi,it'+CHAR(39)+'s Arul.';
PRINT 'Helo,it'+NCHAR(39)+'s Arul.';
2. QUOTED_IDENTIFIER
Another simple and best alternate solution is to use QUOTED_IDENTIFIER.
When QUOTED_IDENTIFIER is set to OFF, the strings can be enclosed in double quotes.
In this scenario, we don’t need to escape single quotes.
So,this way would be very helpful while using lot of string values with single quotes.
It will be very much helpful while using so many lines of INSERT/UPDATE scripts where column values having single quotes.
SET QUOTED_IDENTIFIER OFF;
PRINT "It's Arul."
SET QUOTED_IDENTIFIER ON;
CONCLUSION
The above mentioned methods are applicable to both AZURE and On Premises .
2 ways to work around this:
for ' you can simply double it in the string, e.g.
select 'I''m happpy' -- will get: I'm happy
For any charactor you are not sure of: in sql server you can get any char's unicode by select unicode(':') (you keep the number)
So this case you can also select 'I'+nchar(39)+'m happpy'
The doubling up of the quote should have worked, so it's peculiar that it didn't work for you; however, an alternative is using double quote characters, instead of single ones, around the string. I.e.,
insert into my_table values("hi, my name's tim.");
Also another thing to be careful of is whether or not it is really stored as a classic ASCII ' (ASCII 27) or Unicode 2019 (which looks similar, but not the same). This isn't a big deal on inserts, but it can mean the world on selects and updates. If it's the unicode value then escaping the ' in a WHERE clause (e.g where blah = 'Workers''s Comp') will return like the value you are searching for isn't there if the ' in "Worker's Comp" is actually the unicode value.If your client application supports free-key, as well as copy and paste based input, it could be Unicode in some rows, and ASCII in others!
A simple way to confirm this is by doing some kind of open ended query that will bring back the value you are searching for, and then copy and paste that into notepad++ or some other unicode supporting editor. The differing appearance between the ascii value and the unicode one should be obvious to the eyes, but if you lean towards the anal, it will show up as 27 (ascii) or 92 (unicode) in a hex editor.
The following syntax will escape you ONLY ONE quotation mark:
SELECT ''''
The result will be a single quote. Might be very helpful for creating dynamic SQL :).
Double quotes option helped me
SET QUOTED_IDENTIFIER OFF;
insert into my_table values("hi, my name's tim.");
SET QUOTED_IDENTIFIER ON;
This should work
DECLARE #singleQuote CHAR
SET #singleQuote = CHAR(39)
insert into my_table values('hi, my name'+ #singleQuote +'s tim.')
Just insert a ' before anything to be inserted. It will be like a escape character in sqlServer
Example:
When you have a field as, I'm fine.
you can do:
UPDATE my_table SET row ='I''m fine.';
I had the same problem, but mine was not based of static data in the SQL code itself, but from values in the data.
This code lists all the columns names and data types in my database:
SELECT DISTINCT QUOTENAME(COLUMN_NAME),DATA_TYPE FROM INFORMATION_SCHEMA.COLUMNS
But some column names actually have a single-quote embedded in the name of the column!, such as ...
[MyTable].[LEOS'DATACOLUMN]
To process these, I had to use the REPLACE function along with the suggested QUOTED_IDENTIFIER setting. Otherwise it would be a syntax error, when the column is used in a dynamic SQL.
SET QUOTED_IDENTIFIER OFF;
SET #sql = 'SELECT DISTINCT ''' + #TableName + ''',''' + REPLACE(#ColumnName,"'","''") + ...etc
SET QUOTED_IDENTIFIER ON;
The STRING_ESCAPE funtion can be used on newer versions of SQL Server
This should work: use a back slash and put a double quote
"UPDATE my_table SET row =\"hi, my name's tim.\";

Regex in Google Apps Script practical issue. Forms doesn't read regex as it should

I hope its just something i'm not doing right.
I've been using a simple script to create a form out of a spreadsheet. The script seems to be working fine. The output form is going to get some inputs from third parties so i can analyze them in my consulting activity.
Creating the form was not a big deal, the structure is good to go. However, after having the form creator script working, i've started working on its validations, and that's where i'm stuck at.
For text validations, i will need to use specific Regexes. Many of the inputs my clients need to give me are going to be places' and/or people's names, therefore, i should only allow them usign A-Z, single spaces, apostrophes and dashes.
My resulting regexes are:
//Regex allowing a **single name** with the first letter capitalized and the occasional use of "apostrophes" or "dashes".
const reg1stName = /^[A-Z]([a-z\'\-])+/
//Should allow (a single name/surname) like Paul, D'urso, Mac'arthur, Saint-Germaine ecc.
//Regex allowing **composite names and places names** with the first letter capitalized and the occasional use of "apostrophes" or "dashes". It must avoid double spaces, however.
const regNamesPlaces = /^[^\s]([A-Z]|[a-z]|\b[\'\- ])+[^\s]$/
//This should allow (names/surnames/places' names) like Giulius Ceasar, Joanne D'arc, Cosimo de'Medici, Cosimo de Medici, Jean-jacques Rousseau, Firenze, Friuli Venezia-giulia, L'aquila ecc.
Further in the script, these Regexes are called as validation pattern for the forms text items, in accordance with each each case.
//Validation for single names
var val1stName = FormApp.createTextValidation()
.setHelpText("Only the person First Name Here! Use only (A-Z), a single apostrophe (') or a single dash (-).")
.requireTextMatchesPattern(reg1stName)
.build();
//Validation for composite names and places names
var valNamesPlaces = FormApp.createTextValidation()
.setHelpText(("Careful with double spaces, ok? Use only (A-Z), a single apostrophe (') or a single dash (-)."))
.requireTextMatchesPattern(regNamesPlaces)
.build();
Further yet, i have a "for" loop that creates the form based on the spreadsheets fields. Up to this point, things are working just fine.
for(var i=0;i<numberRows;i++){
var questionType = data[i][0];
if (questionType==''){
continue;
}
else if(questionType=='TEXTNamesPlaces'){
form.addTextItem()
.setTitle(data[i][1])
.setHelpText(data[i][2])
.setValidation(valNamesPlaces)
.setRequired(false);
}
else if(questionType=='TEXT1stName'){
form.addTextItem()
.setTitle(data[i][1])
.setHelpText(data[i][2])
.setValidation(val1stName)
.setRequired(false);
}
The problem is when i run the script and test the resulting form.
Both validations types get imported just fine (as can be seen in the form's edit mode), but when testing it in preview mode i get an error, as if the Regex wasn't matching (sry the error message is in portuguese, i forgot to translate them as i did with the code up there):
A screenshot of the form in edit mode
A screeshot of the form in preview mode
However, if i manually remove the bars out of this regex "//" it starts working!
A screenshot of the form in edit mode, Regex without bars
A screenshot of the form in preview mode, Regex without bars
What am i doing wrong? I'm no professional dev but in my understanding, it makes no sense to write a Regex without bars.
If this is some Gforms pattern of reading regexes, i still need all of this to be read by the Apps script that creates this form after all. If i even try to pass the regex without the bars there, the script will not be able to read it.
const reg1stName = ^[A-Z]([a-z\'])+
const regNamesPlaces = ^[^\s]([A-Z]|[a-z]|\b[\'\- ])+[^\s]$
//Can't even be saved. Returns: SyntaxError: Unexpected token '^' (line 29, file "Code.gs")
Passing manually all the validations is not an option. Can anybody help me?
Thanks so much
This
/^[A-Z]([a-z\'\-])+/
will not work because the parser is trying to match your / as a string literal.
This
^[A-Z]([a-z\'\-])+
also will not work, because if the name is hyphenated, you will only match up to the hyphen. This will match the 'Some-' in 'Some-Name', for example. Also, perhaps you want a name like 'Saint John' to pass also?
I recommend the following :)
^[A-Z][a-z]*[-\.' ]?[A-Z]?[a-z]*
^ anchors to the start of the string
[A-Z] matches exactly 1 capital letter
[a-z]* matches zero or more lowercase letters (this enables you to match a name like D'Urso)
[-\.' ]? matches zero or 1 instances of - (hyphen), . (period), ' (apostrophe) or a single space (the . (period) needs to be escaped with a backslash because . is special to regex)
[A-Z]? matches zero or 1 capital letter (in case there's a second capital in the name, like D'Urso, St John, Saint-Germaine)

How to make new line from a xml response string

I get my data from an API, which return XML, I already convert it to json because I use angularjs, the field that I need, store Songs Lyrics and it used this symbol ↵ when ever it should go to new line.
for example :
You shout it loud↵But I can’t hear a word you say↵I’m talking loud, not saying much↵↵I’m criticized but all your bullets ricochet↵You shoot me down, but I get up
example above, is something that I get when I use console.log() but when I show this field to my HTML page, its just string with no ↵ in it. I don't know why it not show in HTML, and if its something to make new line, it's not happening.
I was thinking to replace ↵ with <br /> is it possible? I will be appreciate it if you guys can help me with that.
UPDATE :
I use angularjs and fill the model with lyric and show it with {{lyric}} in my html
but as you can see in picture, when I use console.log($scope.lyric) string is formated well, but when I show the same model in HTML, its like this
Simple regexr string replace should take care of it:
var str = 'You shout it loud↵But I can’t hear a word you say↵I’m talking loud, not saying much↵↵I’m criticized but all your bullets ricochet↵You shoot me down, but I get up';
var formatted = str.replace(/↵/ig, "<br/>\n");
console.log(formatted);
document.write(formatted);
The regexr finds everything that matches the character between the / signs and replaces them with a standard newline \n and a HTML breakline tag <br/>.
The i and g flags mean Case Insensitive and Search Global respectively.
Case Insensitive catches the characters even if they are in a different case. Search Global means that if you input a multi line string, then it will replace on all lines and not just on the first.
I just figure it out, I let you know how it works in case of anyone else face with same problem :
when I show lyric like this :
<p>{{lyric}}</p>
it ignored my new lines. but when I use this :
<pre>{{lyrics}}</pre>
it works!

How to assign large string to a variable without ILLEGAL Token error?

I need to assign a long string (4 pages worth of text) to a variable, so far I've been doing it like this
var myText = "[SOME] Text goes \
.. here ? and 'there' \
is more ( to \
come etc. !)";
slashes at the end need to be added to all of the text, and I can't imagine how long this will take to do manually. Also, I get ILLEGAL error for some reason I don't understand for the first line.
Therefore I wanted to find out the best way to handle this situation. I was looking into solutions of passing in a .txt file, but would rather do it as a really long string (this is not a production app). Also string shown in example is random, showing that there can be a lot of various characters in it that need to be accounted for.
You have to concatenate the string:
var t = ""
+"text line 1"
...
+"text line n"
But I would put the text in a text file and read it using xhr (on client) or io (on server).
You cannot have a multiline string definition in javascript but you have several options :
save your text in a file and read this file from your program
use the multiline npm module which propose a hack to use function comments as multiline string definitions
use ES6 multi-line template strings notation, which have multi-line support - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/template_strings#Multi-line_strings
saving the text in a file would seem to me as the preferred option in your case since the text seem to be very long an potentially coming from an untrusted source. You do not want the pasted text to close the string and start doing innapropriate function calls.

Regexp for single quote replacement in SQL statment

I have googled this ane are really surprised not to find a ready made solution to this as I believe that it is a problem that is faced by anyone who is updating databases from forms.
Problem is the single quote that is used in text fields as an apostrophe and other instances.
So I need to find are replace all occurrences of single quotes within an SQL statement in Javascript / Nodejs before sending it to the database, this of course is not a hard-coded statement and it will be different every time, but the following includes carriage returns in the sql statement as well as spaces before and after an equal sign as well as no spaces to try and catch all occurrences.
The key thing really is the "=" followed by a single speech mark, the text to grab and the closing single speech mark followed by a space, a comma, or the word "WHERE".
I am no expert with regex, but have come up with this, which only correctly extracts a couple of the strings:
/\= *'(.*)' *[, *]/g
Would appreciate help from any of the regex experts out there :-)
update XXX set status = 'Pending's' where xx = 'xxx'
UPDATE XX_XXX
SET
SUBJECT='Test of system's', SERIAL_NUMBER='SN'1'23', SPEC='Verify order's package is complete',
DESCRIPTION='13.3/8'' Buttress Pin's ' WHERE ID='1002-15'
This should be the result:
update XXX set status = 'Pending''s' where xx = 'xxx'
UPDATE XX_XXX
SET
SUBJECT='Test of system''s', SERIAL_NUMBER='SN''1''23', SPEC='Verify order''s package is complete',
DESCRIPTION='13.3/8''' Buttress Pin''s ' WHERE ID='1002-15'
And these are the strings that need to be selected:
Pending's
Test of system's
SN'1'23
Verify order's package is complete
13.3/8'
1002-15
It is very common issue, do not need regex. Just simply replace a single quote in a string to double single quote.
This is example. Just see the comment
--This is double quote I used, because ally's wonderland not work at here.
DECLARE #StringValueWithSingleQuote varchar( 50) = 'Ally''s wonderland'
-- just see the magid, replace double single quote to single quote while displaing
select #StringValueWithSingleQuote
--This is actual you have to do
select REPLACE( #StringValueWithSingleQuote , char(39) , Char(39)+Char(39) )

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