I'm trying to extract column names from a SQLite result set from sqlite_master's sql column. I get hosed up in the regular expressions in the match() and split() functions.
t1.executeSql('SELECT name, sql FROM sqlite_master WHERE type="table" and name!="__WebKitDatabaseInfoTable__";', [],
function(t1, result) {
for(i = 0;i < result.rows.length; i++){
var tbl = result.rows.item(i).name;
var dbSchema = result.rows.item(i).sql;
// errors out on next line
var columns = dbSchema.match(/.*CREATE\s+TABLE\s+(\S+)\s+\((.*)\).*/)[2].split(/\s+[^,]+,?\s*/);
}
},
function(){console.log('err1');}
);
I want to parse SQL statements like these...
CREATE TABLE sqlite_sequence(name,seq);
CREATE TABLE tblConfig (Key TEXT NOT NULL,Value TEXT NOT NULL);
CREAT开发者_运维百科E TABLE tblIcon (IconID INTEGER NOT NULL PRIMARY KEY,png TEXT NOT NULL,img32 TEXT NOT NULL,img64 TEXT NOT NULL,Version TEXT NOT NULL)
into a strings like theses...
name,seq
Key,Value
IconID,png,img32,img64,Version
Any help with a RegEx would be greatly appreciated.
Main problem is \s+ in your match regex. Should be /.*CREATE\s+TABLE\s+(\S+)\s*\((.*)\).*/)
Second problem is the split. I'm not quite sure what you tried to do in that regex, but here's a bit more straightforward way of doing it that does work on all of your examples:
var columns= dbSchema.match(/.*CREATE\s+TABLE\s+(\S+)\s*\((.*)\).*/)[2].split(/,/);
for(i = 0;i < columns.length; i++) {
columns[i] = columns[i].replace(/\s.*/g, '');
}
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