<value> = Functions with varying return types: call
Instructions: callcall ( <filename> )
<value> = Functions with varying return types: call
Instructions: callcall ( <filename>, <value> [,…] )
Functions with varying return types: call
Instructions: callCall another vip Example Scripts: CGI Scripts
Example Scripts: Scriptsscript like a Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure with parameters Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Flow control: returnreturn a result.
Calling another vip Example Scripts: CGI Scripts
Example Scripts: Scriptsscript is very similar to executing a Modes of Operation: Shell Scriptsshell script except that Flow control: if … then
Flow control: try … thenthe Example Scripts: CGI Scripts
Example Scripts: Scriptsscript can be passed Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Shell Scripts: Return values
Appendix: Return valuesreturn values of any type. Flow control: if … then
Flow control: try … thenThe called Example Scripts: CGI Scripts
Example Scripts: Scriptsscript shares Flow control: if … then
Flow control: try … thenthe Interactive Shell: Preferencespreferences of Flow control: if … then
Flow control: try … thenthe current context but cannot access it's Glossary: Variable, var_refvariables Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedures.
Flow control: if … then
Flow control: try … thenThe called Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Flow control: end
Shell Immediate Commands: exit, quit, endends when it executes an Flow control: end
Shell Immediate Commands: exit, quit, endend Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction, Flow control: returnreturn on ground level (Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not inside a Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure) Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or program execution reaches Flow control: if … then
Flow control: try … thenthe Flow control: end
Shell Immediate Commands: exit, quit, endend of Flow control: if … then
Flow control: try … thenthe Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Text functions: file
Instructions: filefile. It also Flow control: end
Shell Immediate Commands: exit, quit, endends when it encounters an uncatched error, which generates an error in Flow control: if … then
Flow control: try … thenthe calling Example Scripts: CGI Scripts
Example Scripts: Scriptsscript which subsequently will terminate Flow control: if … then
Flow control: try … thenthe calling Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Flow control: if … thenif it Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not catch Flow control: if … then
Flow control: try … thenthe error.
Flow control: if … then
Flow control: try … thenThe called Example Scripts: CGI Scripts
Example Scripts: Scriptsscript is expected to Flow control: returnreturn a Glossary: Valuevalue with Flow control: end
Shell Immediate Commands: exit, quit, endend Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or Flow control: returnreturn. Flow control: if … thenIf it Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not Flow control: returnreturn a Glossary: Valuevalue, Flow control: if … then
Flow control: try … thenthen a result Glossary: Valuevalue of 0.0 is assumed.
There is also an Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Functions with varying return types: call
Instructions: callcall which Flow control: do … loopdoes pretty Flow control: if … then
Flow control: try … thenthe same thing but Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not expect a Shell Scripts: Return values
Appendix: Return valuesreturn value.
e.g.:
Instructions: var
How does VScript::Value() work?: Var*&var rslt = Functions with varying return types: call
Instructions: callcall ( "utils/add2db.vs", user_id, Glossary: number, num_valnumber, Glossary: Valuevalue )
<value> = Functions with varying return types: eval
Instructions: evaleval <text>
<value> = Functions with varying return types: eval
Instructions: evaleval ( <text> )
Execute <text> as a vip Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Flow control: returnreturn it's result Glossary: Valuevalue.
Flow control: if … then
Flow control: try … thenThe Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext is parsed just like a Example Scripts: CGI Scripts
Example Scripts: Scriptsscript, so almost every Vipsi command syntax: Expressions
Glossary: Expressionexpression is possible here, including execution of own Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedures.
Flow control: if … then
Flow control: try … thenThe evaluated Vipsi command syntax: Expressions
Glossary: Expressionexpression Flow control: end
Shell Immediate Commands: exit, quit, endends when it executes an Flow control: end
Shell Immediate Commands: exit, quit, endend Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction, Flow control: returnreturn on ground level (Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not inside a Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure) Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or execution reaches Flow control: if … then
Flow control: try … thenthe Flow control: end
Shell Immediate Commands: exit, quit, endend of Flow control: if … then
Flow control: try … thenthe Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext. It also Flow control: end
Shell Immediate Commands: exit, quit, endends when it encounters an uncatched error, which generates an error in Flow control: if … then
Flow control: try … thenthe calling Example Scripts: CGI Scripts
Example Scripts: Scriptsscript which subsequently will terminate Flow control: if … then
Flow control: try … thenthe calling Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Flow control: if … thenif it Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not catch Flow control: if … then
Flow control: try … thenthe error.
Flow control: if … then
Flow control: if … thenIf the Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not Flow control: returnreturn a Glossary: Valuevalue, Flow control: if … then
Flow control: try … thenthen List functions: thisthis will probably generate an error when Flow control: if … then
Flow control: try … thenthe result is used as Vipsi command syntax: Arguments
Glossary: Argumentsargument to an Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or Vipsi command syntax: Operators
Operators
Glossary: Operatoroperator =.
There is also an Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Functions with varying return types: eval
Instructions: evaleval which expects no result Glossary: Valuevalue.
vipsi> // stupid example
vipsi> Instructions: putput Functions with varying return types: eval
Instructions: evaleval «"hello!"» hello!
Instructions: var
How does VScript::Value() work?: Var*&var Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext = ""
Flow control: do … loopdo
Instructions: putput Constants: nlnl, "eval> "
Instructions: getget Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext
Flow control: whilewhile Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext!=""
Instructions: putput " = "
Flow control: try … thentry
Instructions: putput Functions with varying return types: eval
Instructions: evaleval Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext
Flow control: if … then
Flow control: try … thenelse
Instructions: putput #stderr, "bummer!"
Flow control: if … then
Flow control: try … thenthen
Flow control: do … looploop
Instructions: putput Constants: nlnl, "bye bye!",Constants: nlnl
<value> = ( <expression> )
<var_ref> = ( <expression> )
Enclose an Vipsi command syntax: Expressions
Glossary: Expressionexpression.
Shell Scripts: Return values
Appendix: Return valuesReturn value is that of Flow control: if … then
Flow control: try … thenthe Vipsi command syntax: Expressions
Glossary: Expressionexpression.
Separators: Round brackets "( … )"
Functions with varying return types: bracket expression "()"Parenthesis are most frequently used to enclose Operators: Subtract "-"sub Vipsi command syntax: Expressions
Glossary: Expressionexpressions to override Operators: Operator precedenceoperator precedence.
e.g.:
vipsi> 1 * 2 + 3 = 5
vipsi> 1 * (2+3) = 6
vipsi>
Separators: Round brackets "( … )"
Functions with varying return types: bracket expression "()"Parenthesis are also used Operators: Make Identifier "@"at Flow control: if … then
Flow control: try … thenthe place of an Vipsi command syntax: Operators
Operators
Glossary: Operatoroperator to Functions with varying return types: call
Instructions: callcall a Vipsi command syntax: Functions
Functions
Glossary: Functionfunction Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and in Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Instructions: procproc Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Literals: Procedure literals
Procedures: Procedure literalsprocedure literal Instructions: procproc in a way similar to Flow control: if … then
Flow control: try … thenthe Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure Functions with varying return types: call
Instructions: callcall Vipsi command syntax: Operators
Operators
Glossary: Operatoroperator.
<value> = Functions with varying return types: include
Instructions: includeinclude <filename>
Load Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and execute named Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Text functions: file
Instructions: filefile just as Flow control: if … thenif it's contents were part of Flow control: if … then
Flow control: try … thenthe current source. Flow control: if … then
Flow control: try … thenThe <filename> must be a Glossary: text, text_valtext value.
Operators: Bitwise Not "~"
Operators: Boolean Negation "!"Note: Flow control: if … then
Flow control: try … thenthe Text functions: file
Instructions: filefile is included Operators: Make Identifier "@"at Flow control: if … then
Flow control: try … thenthe time when List functions: thisthis Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction is executed, that means: maybe never, maybe repeatedly, Flow control: if … thenif it occurs in a Flow control: do … looploop. It is Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not included Operators: Make Identifier "@"at pre-compile time Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or in some kind of pre-processor as in C.
Flow control: if … then
Flow control: try … thenThe included Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Flow control: end
Shell Immediate Commands: exit, quit, endends when it executes an Flow control: end
Shell Immediate Commands: exit, quit, endend Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction, Flow control: returnreturn on ground level (Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not inside a Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure) Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or program execution reaches Flow control: if … then
Flow control: try … thenthe Flow control: end
Shell Immediate Commands: exit, quit, endend of Flow control: if … then
Flow control: try … thenthe Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Text functions: file
Instructions: filefile. It also Flow control: end
Shell Immediate Commands: exit, quit, endends when it encounters an uncatched error, which generates an error in Flow control: if … then
Flow control: try … thenthe calling Example Scripts: CGI Scripts
Example Scripts: Scriptsscript which subsequently will terminate Flow control: if … then
Flow control: try … thenthe calling Example Scripts: CGI Scripts
Example Scripts: Scriptsscript Flow control: if … thenif it Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not catch Flow control: if … then
Flow control: try … thenthe error.
Flow control: if … then
Flow control: try … thenThe included Example Scripts: CGI Scripts
Example Scripts: Scriptsscript is expected to Flow control: returnreturn a Glossary: Valuevalue with Flow control: end
Shell Immediate Commands: exit, quit, endend Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or Flow control: returnreturn. Flow control: if … thenIf it Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not Flow control: returnreturn a Glossary: Valuevalue, Flow control: if … then
Flow control: try … thenthen a result Glossary: Valuevalue of 0.0 is assumed.
There is also an Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Functions with varying return types: include
Instructions: includeinclude which Flow control: do … loopdoes pretty Flow control: if … then
Flow control: try … thenthe same thing but Flow control: do … loopdoes Operators: Bitwise Not "~"
Operators: Boolean Negation "!"not expect a Shell Scripts: Return values
Appendix: Return valuesreturn value.
<value> = Functions with varying return types: ioctl
Instructions: ioctlioctl <name>
<value> = Functions with varying return types: ioctl
Instructions: ioctlioctl #<number>, <identifier>
Querry stream state
••• still under development •••
There is also an Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Functions with varying return types: ioctl
Instructions: ioctlioctl which sets stream settings.
Functions with varying return types: ioctl
Instructions: ioctlioctl flush|flushin|flushout
Functions with varying return types: ioctl
Instructions: ioctlioctl timeout = 0 (off) Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or Glossary: number, num_valnumber (seconds)
Functions with varying return types: ioctl
Instructions: ioctlioctl Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext = "utf-8" Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or "mac-roman"
Functions with varying return types: ioctl
Instructions: ioctlioctl pos = Glossary: number, num_valnumber (Text functions: file
Instructions: filefile: read-write-pointer)
{row,col} (tty: cursor location)
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = type ("tty", "Text functions: file
Instructions: filefile", etc.)
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = inavail (bytes readable w/o blocking)
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = outfree (bytes writable w/o blocking)
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = error (0=ok, 1=eof, 2=timeout, ...)
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = size (Text functions: file
Instructions: filefile: Glossary: number, num_valnumber, tty: {rows,cols})
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiername (filename)
Functions with varying return types: ioctl
Instructions: ioctlioctl Instructions: var
How does VScript::Value() work?: Var*&var = isopen/isopenin/isopenout
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